[0001]This application claims the August 14, 2015 filed Chinese Patent Application No. 201510501585.X, entitled "Apparatus and method for a wireless communication system," the priority of Chinese Patent Application, the entire content of which is incorporated by reference in this application.
FIELD
[0002]
The present disclosure relates to wireless communication technology, and more particularly, to a plurality of times to solve the interference signal transmission in a wireless communication system, a multi-user combined transmission (Multi-User Superposition Transmission, MUST) in order to effectively improve the successful reception rate of data apparatus and method, and multi-stream combined transmission throughput in a wireless communication system.
Background technique
[0003]
In the existing wireless communication system employing multi-user transmission in superposition, the superposition of different base station user data stream at different transmit power after allocating channels according to a user, for example, the user equipment terminal using a serial interference cancellation mechanism eliminates the user equipment from other interference, their target data stream extracted from the data stream received in superposed. If the extracted target data stream fails, the user equipment informs the base station, the base station will simply retransmit the data stream. If a retransmission is still superimposed transmission, there will still be interference from other users in the retransmitted data stream. Thus, a simple superposition strengthened at the user equipment side if the previously received again the data stream received data stream, although the received signal power is enhanced, but the interference signal power is also likely to be enhanced, leading by retransmitting extraction the possibility that the target data stream is reduced.
[0004]
SUMMARY
[0005]
It gives a brief summary of the present disclosure hereinafter, in order to provide a basic understanding of some aspects of the present disclosure. However, it should be understood that this summary is not an exhaustive overview of the disclosure. It is not intended to be used or the critical portion of the present disclosure determines an important part of, nor is it intended to limit the scope of the present disclosure. Its sole purpose is to present some concepts in a simplified form on the present disclosure, as a prelude to the more detailed description that is presented later.
[0006]
In view of the above problems, an object of the present disclosure is to provide an apparatus and method overcomes the disadvantages of the prior art radio communication system, which can reduce interference from other users by a predetermined retransmission signal processing to improve successfully received transmission rate and throughput of multi-stream data is superimposed.
[0007]
According to an aspect of the present disclosure, there is provided an apparatus in a wireless communication system, the apparatus comprising: a transmitting unit configured to transmit synthesized using superposition coding to at least a plurality of user devices comprises a first user equipment and second user equipment a first signal distribution, the first assignment signal comprises at least for a portion of a first power signal for a first user device and a second power signal portion of the second user device; a receiving unit configured to receive a first user device and second retransmission request of at least one user feedback device; and a processing unit configured to respond to a retransmission request, to process a predetermined coefficient processing on a first signal portion and a second power signal portion to obtain a second power distribution signal, wherein the transmitting unit is further configured to transmit a second signal assigned to the first user and the second user equipment device, merging the first and the second distributed signal by the first user device assignment signal and the second user equipment, respectively obtaining data of the first user device and the data for the second user for the device.
[0008]
According to embodiments of the present disclosure preferred embodiment, the first distributed signal and the second combined signal distribution, the first portion and the second power signal power signal portions is reduced or canceled.
[0009]
According to another embodiment of the present disclosure preferably, the processing unit is further configured to transmit a power of at least a first portion and a second power signal power signal portion is adjusted to obtain a second signal distribution.
[0010]
According to another preferred embodiment of the present disclosure, the transmission unit is further configured to respectively indicate how to perform the merge operation to merge the first user device and the second user equipment sends an indication to the user equipment in accordance with the merger of the first and second user equipment indication of the first and second distribution signal assignment signal are combined.
[0011]
According to another embodiment of the present disclosure preferably combined instruction included in the higher layer signaling or physical layer signaling.
[0012]
According to another preferred embodiment of the present disclosure, combined to perform a merge operation indicating higher power signal portion to enhance the power of the first signal portion and a second portion of the power signal.
[0013]
According to another embodiment, the present disclosure is preferably combined indicating a merge operation is performed, in order to enhance the power signal portions are respectively for the first user and the second user equipment device a first portion and a second power signal power signal portion.
[0014]
According to another embodiment of the present disclosure preferably, based on the predetermined Hadamard matrix processing coefficients are determined.
[0015]
According to another aspect of the present disclosure also provides an apparatus for a wireless communication system, the apparatus comprising: a receiving unit configured to receive a first signal from a base station assigned, wherein the first allocation signal is synthesized using superposition coding and including at least a first portion of the first power signal for a user device and a portion of the second power signal for the second user device; a processing unit configured to data for the first user device according to a first assignment signal obtained; and transmitting unit, the processing unit is configured to assign the first signal is not obtained for the case of the data in accordance with a first user device, transmits a retransmission request to the base station, wherein the receiving unit is further configured to receive a second assignment signal from the base station, the second is a base station assignment signal in response to the retransmission request of the first user equipment and second user equipment in at least one feedback coefficient to a predetermined processing power to process the first signal portion and a second portion of the power signal is obtained, and wherein the processing unit is further configured to assign a first signal and a second distribution channel They are combined to obtain the data for the first user device.
[0016]
According to another aspect of the present disclosure also provides an apparatus for a wireless communication system, the apparatus comprising: a receiving unit configured to receive the first signal distribution, the first assignment signal comprises at least a first user and the second user equipment a first signal portion and the power portion of the second power device signal transmitted on the same first radio transmission resource; processing unit data are arranged from the first user device and the second user equipment in accordance with a first assignment signal obtained; and a transmission unit configured to, send to the first user equipment and second user equipment in the processing unit where the data of the first user device and the second user equipment from at least one of a first assignment signal is not successfully obtained according to the retransmission request, wherein the receiving unit is further configured to receive a second assignment signal, a second signal distribution device comprises at least a first user and a second user equipment in response to the retransmission request is transmitted on the same radio transmission resources in the second three power signal power signal portion and a fourth portion, the third portion and the fourth power signal power signal portion Processing coefficients based on the predetermined signal portion of a first power and a second power signal obtained by processing section, and wherein the processing unit is further configured to allocate the first signal and the second signal are combined to obtain a distribution, respectively, from the first user data and the second user equipment device.
[0017]
According to another aspect of the present disclosure also provides an apparatus for a wireless communication system, the apparatus comprising: a transmission unit configured to transmit power wirelessly in a first and a second user equipment transmits the second power signal portion a first radio resources on the same transmission power resource to the base station a first signal portion; a receiving unit, configured to receive a retransmission request from a base station; and a processing unit configured to respond to a retransmission request for processing coefficients in a predetermined a first power signal is processed to obtain a third portion of the power signal portion, wherein the transmitting unit is further configured to transmit a third transmission power in the radio resource of the second user equipment transmits a fourth power portion of the signal of the second radio transmission same a third power transmission resource signal to the base part, the fourth part of the power signal in response to a second user device to request retransmission of the predetermined processing coefficient for processing the second power signal portion obtained.
[0018]
According to another aspect of the present disclosure also provides a method for a wireless communication system, the method comprising: a transmission step for transmitting to a plurality of user devices comprising at least a first user equipment and second user equipment using superposition coding a first synthesized signal distribution, the first assignment signal comprises at least a first power signal for a portion of the first user device and the second power signal portion for the second user device; receiving step for receiving from the first user device and second user equipment requests retransmission of at least one feedback; and a processing step of, in response to a retransmission request, to process a predetermined coefficient processing on a first signal portion and the power of the second power signal portion to obtain a second signal distribution, wherein, in the transmitting step further transmits a second signal assigned to the first user and the second user equipment device, merging the first and the second assigned assignment signal by a first signal and the second user equipment to user equipment for respectively data of the first user device and the data for the second user equipment.
[0019]
According to another aspect of the present disclosure also provides a method for a wireless communication system, the method comprising: a receiving step of receiving a first signal from a base station assigned, wherein the first allocation signal is synthesized using superposition coding and a first power signal comprises at least for a portion of the first user device and a portion of the second power signal for the second user device; a processing step of the data for the first user device according to a first assignment signal obtained; and a transmitting step, in a case where the first signal for the user data of the device, the base station transmits a first retransmission request signal has not been assigned, wherein, further receive a second assignment signal from the base station in the receiving step, the second base station is allocated in response to the retransmission request of the first user equipment and second user equipment in at least one feedback coefficient to a predetermined processing power to process the first signal portion and a second power signal portion obtained, and wherein, in the processing step allocating the first signal and the further second assignment signal are combined to obtain for the first user equipment It is.
[0020]
According to another aspect of the present disclosure also provides a method for a wireless communication system, the method comprising: a receiving step of receiving the first signal distribution, the first assignment signal comprises at least a first user equipment and a second user equipment a first signal portion and the power portion of the second power signal transmitted on the same first radio transmission resource; processing step, data for each user from the first user device and the second device according to a first assignment signal obtained; and transmitting step, in the case where the data for a first user device and the second user equipment from at least a first signal distribution obtained according to the not successful, transmits a retransmission request to the first user device and the second user equipment, wherein, also receives a second signal distribution in the receiving step, a second allocation signal comprises at least a first user equipment and the second user device in response to the third power of the retransmission request signal transmitted on the same portion of the second and fourth wireless transmission resource power signal portion, the third portion and the fourth power of the power signal based on the predetermined signal portion of a first power signal processing coefficients Number portion and the second portion is a power signal obtained by processing, and wherein, in the processing step, the first distributed signal and the second signal are combined to obtain the distribution data from the respective first user device and a second user equipment .
[0021]
According to another aspect of the present disclosure further provides a method for a wireless communication system, the method comprising: a transmitting step of transmitting power to the first and second user equipment in the same transmission signal power of a second radio transmission resource portion a first radio transmission resource on the transmission power of a first signal to the base portion; a receiving step of receiving a retransmission request from a base station; and a processing step of, in response to the retransmission request processing coefficients in a predetermined first power signal processed to obtain a third portion of the power signal portion, wherein, further to the base station at a third transmit power on the wireless transmission resource and a second user equipment transmits a fourth power signal portion of the same in a second radio transmission resource transmission step a third power signal portion, the fourth portion is a power signal in response to the second user equipment a retransmission request processing section to the second predetermined power signal processing coefficient obtained.
[0022]
According to another aspect of the present disclosure, an electronic device is also provided, the electronic device may include a transceiver and the one or more processors, the one or more processors may be configured to perform wireless communication in accordance with the above disclosure of the present the method or system function in the respective units.
[0023]
According to other aspects of the present disclosure is also provided for implementing the above-described computer program code recorded thereon a computer program product and method of the present disclosure and the computer on which the computer program code for realizing the above-described method according to the present disclosure readable storage media.
[0024]
According to the present embodiment of the present disclosure, by performing predetermined processing on a retransmission signal is superimposed on the multi-stream transmission to reduce interference to transmissions from other user equipment caused, can improve the success rate of the received data and superimposed multi-stream transmission throughput.
[0025]
In the present specification are given in the following section embodiments disclosed in other aspects of the embodiment, wherein, for a detailed description of preferred embodiments of the present disclosure embodiment fully disclosed embodiments without applied thereto is defined.
BRIEF DESCRIPTION
[0026]
The present disclosure may be better understood by reference to the following detailed description given in conjunction with the accompanying drawings, in which the same or similar reference numerals in the drawings to refer to the same or like parts. The drawings together with the detailed description are included in a part of the present specification and form of the specification, it serves to further illustrate the embodiments and explain the principles and advantages of the present disclosure of the preferred embodiment of the disclosure. among them:
[0027]
FIG. 1 is a block diagram illustrating a functional configuration example of a wireless communication system according to the present embodiment of the disclosed embodiment of the apparatus;
[0028]
FIG 2 is a block diagram of a functional configuration example of a wireless communication system according to another embodiment of the present disclosure of embodiments of the apparatus shown;
[0029]
FIG 3 is a flowchart showing an example of the present disclosure downlink transmission signaling interaction process of the embodiment;
[0030]
FIG 4 is a functional block diagram of a wireless communication system according to an embodiment of the present disclosure in a further configuration example of the apparatus shown;
[0031]
FIG 5 is a block diagram illustrating a functional configuration example of the radio communication system of the present disclosure in another embodiment of the apparatus of the embodiment;
[0032]
FIG 6 is a flowchart illustrating an example of a signaling interaction process for uplink transmission according to an embodiment of the disclosure;
[0033]
FIG 7 is a flowchart illustrating an example of a process of a method of a wireless communication system according to embodiments of the present disclosure;
[0034]
FIG 8 is a flowchart illustrating an example of a process of a method of wireless communication system according to another embodiment of the present disclosure in embodiments;
[0035]
FIG 9 is a flow chart illustrating a method for a wireless communication system according to an embodiment of the present disclosure is an example of still another;
[0036]
FIG 10 is a flowchart showing an example of a process of a method of a wireless communication system in another embodiment of the present disclosure in the embodiment;
[0037]
FIG 11 is a block diagram illustrating a configuration of a personal computer as the information processing apparatus of the present disclosure may be employed in the embodiment of the embodiment;
[0038]
FIG 12 is a block diagram illustrating a first example of the present disclosure may be applied techniques evolved base station (eNB) of a schematic configuration of;
[0039]
FIG 13 is a block diagram illustrating a second example of a schematic configuration of eNB may be applied in the art of the present disclosure; and
[0040]
FIG 14 is a block diagram schematically illustrating an example application of techniques of the present disclosure can be a smart phone configuration.
detailed description
[0041]
The exemplary embodiments of the present disclosure will be described below in conjunction with the accompanying drawings. For clarity and conciseness, in the specification are not all features of an actual implementation. However, it should be understood that many decisions must be made to the specific embodiments of the development of any such actual embodiment of the process in order to achieve the developer's specific goals, such as compliance with those restrictions related systems and services, and these restrictions may be subject to change with different embodiments. In addition, it should be understood that, although the development work can be very complex and time-consuming, but the benefit of this disclosure to those skilled in the, this development is only a routine task.
[0042]
Here, also be noted that, in order to avoid unnecessarily obscure the details of the present disclosure, the drawings only shows a program according to the present disclosure closely related device structures, and / or processing steps, omitted additional details of this little public relations.
[0043]
Next, FIG. 14 to FIG. 1 specifically described embodiments of the present disclosure will be described.
[0044]
Before describing embodiments of the present disclosure will be briefly described in relation to superposition coding (Superposition Coding) is.
[0045]
As a means by superposition coding, the transmitter can use the same transmission resource to communicate with a plurality of receivers. For example, current downlink transmission can support multiple users overlay base stations simultaneously transmit multiple data streams to more than one user equipment, without the use of a different time, frequency or multi-antenna technology to distinguish. As an example, consider a first radio transmitter Tx physical communication link L1 and the first receiver Rx1 and the radio communication transmitter Tx via a second communication link with the receiver Rx2 L2 via communication. Suppose radio conditions for the first receiver / link (e.g. a position farther from the transmitting end) for weaker and for the second receiver / link (e.g. from a position close to the transmitter) is stronger (this case may it is temporary, because changing radio conditions, especially for the mobile station is). In other words, for a fixed radio transmission power, the signal to interference and noise of the first receiver and interference ratio SINR carrier C / I ratio is less than a respective second emitter SINR and C / I ratio (or lower than that obtained many). The transmitter receivers known two opposing radio conditions between the two Tx receiver may be assigned in proportion to their power budget for a particular carrier frequency and a particular time slot, such that the second receiver Rx2 and intended for (more the receiver under strong radio conditions) as compared to the second data block, with higher power transmissions intended for the first receiver Rx1 (the receiver under weak radio conditions) a first data block. For example, radio conditions first receiver Rx1 and the second case due to the additional interference due to the second receiver Rx2 transmits the second data block, the transmitter Tx can be used for the intended sufficient power for a given current a data block to allow the first receiver Rx1 decoding this block. Transmitter Tx less power may then be used for the intended second receiver Rx2 of the second data block, but still enough to use the second receiver Rx2 to eliminate or reduce the transmission of the first data block caused by interfering cancellation to decode the second data block. Transmitter Tx and then transmit the two data blocks at the same time on the same carrier frequency. Thus, these two blocks may be considered the "collision." Because with higher power allocation transmission of the second data block to the first data block, the second block of data is only presented as noise or interference increases toward the first receiver Rx1. If the power offset between the transmission of two data blocks is sufficiently high, then the SINR Rx1 at the first receiver may be degraded or even smaller and insignificant. Thus, if the transmission rate with respect to the first data block, the current radio conditions and additional interference caused by the transmission of the second data block in a sufficient number of the first power transfer Data block, the first receiver Rx1 should be able to decode the first data block. Second receiver Rx2 should be able to decode the first data block as the second receiver Rx2 is superior to the first receiver Rx1 of the first data block received SINR, which is due to the strong radio conditions of the second receiver Rx2 cause. Once the second receiver Rx2 decoded first data block, the second receiver Rx2 can be treated as interference, and interference cancellation techniques known to use the overall signal reception during the two periods of data blocks received from eliminate the interference. A second data block represents a residual signal derived from the combined noise and interference from other sources. If the radio condition of the transmission rate with respect to the second block and the second receiver Rx2 of sufficient power (but a lower power than the first data block) transmission of a second data block, then the second receiver should be able to decode the first Rx2 two data blocks.
[0046]
Note that this method may be extended to three or more receivers. For example, the maximum power may be allocated for transmission to a receiver at the weakest radio conditions, minimum power allocation may be used for transmission to the receiver is the strongest radio conditions, and may be an intermediate power distribution the receiver is a radio for intermediate conditions. The receiver is the strongest radio conditions may then decode the data block is intended for the radio receiver is weakest conditions, eliminating the decoding block from the received signal, a receiver may be decoded in the intermediate radio conditions data block, eliminating a second decoding block, and intended for its own last decoded data block (this decoding / Successive interference cancellation process may be referred elimination). A radio receiver in an intermediate condition may also be intended for decoding data blocks in a radio receiver is weakest conditions will eliminate from the received signal, and then decodes the data intended for its own block. A radio receiver is in the weakest conditions may be able to directly decode the data block intended for it, since the data block with the highest transmission power level. It should be understood that those skilled in the art should be able to expand progressively interference cancellation techniques to four or more receivers without requiring additional testing or further creative work. The receiver may be a mobile station, user equipment, for example, and the transmitter may be a base transceiver station, for example the eNB, for example, a packet data block, transport block (Transport Block).
[0047]
With the development of superposition coding techniques, the inventors of the present disclosure is considered to be applied to the practical need to involve a communication system such as hybrid automatic retransmission problem retransmission request (HARQ) in isochronous. If any of the above-described process in a receiver does not decode the corresponding data block, the receiver may send a corresponding retransmission request to the transmitter. However, if only as the above-described superposition coding as a data block (initial transmission can not be a data block decoded) after simply retransmits superimposed, since the retransmission process by the data block transmission with respect to the other receivers is also enhanced due to interference, even if the transmitter were retransmitted signal, the receiver (even before the initial transmission and the data block, for example, Chase Combining) may still be unable to decode the corresponding data block. Embodiments of the present disclosure in accordance with the techniques of this disclosure is to solve a retransmission signal superposition coding transmission been made, will be described below.
[0048]
Should be understood that the above transmission lines as an example the following describes briefly the superposition coding techniques, but in the case of uplink transmission, i.e., when a plurality of transmitters simultaneously transmit to a single receiver on the same frequency, at the receiver may be a single perform similar to the above procedure. In this case, the receiver may be a base transceiver station, for example the eNB, and the plurality of emitters may be mobile stations such as user equipment.
[0049]
FIG. 1 is a block diagram illustrating a functional configuration example of a wireless communication system according to the present embodiment of the disclosed embodiment of the apparatus. The apparatus may comprise, for example, may be located in a base station or a base station side.
[0050]
1, the apparatus according to the present embodiment includes a transmission unit 100 may be 102, receiving unit 104 and processing unit 106. The functions of the respective units are described in detail below configuration example.
[0051]
The transmitting unit 102 may be configured to send a plurality of user devices comprises at least a first user equipment and the second user device using the first allocation signal superposition coding synthesized, at least the first signal may include a first allocation for the first user equipment a power signal portion and a second portion of the power signal for the second user equipment.
[0052]
Should be noted that, for convenience of explanation, here the base station transmits to the first user equipment and second user equipment UE uses two superposition coding signal synthesis as an example, it should be understood that the base station can simultaneously three or more user equipment synthesized using superposition coding signal transmission, and the techniques of this disclosure are equally applicable to this case. A first power signal portion herein refers to, for example, based on a first signal portion carrying power transmission to the first user equipment device a first target user data block, the second power signal portion are defined by a second power to the second example, signal portion of the second user equipment of the target data block sent by the UE bearer. It is seen from the above-described superposition coding technique, according to the radio condition of the first user equipment and second user equipment, the first power may be greater than the second power or the power may be less than a second.
[0053]
The receiving unit 104 may be configured to receive a retransmission request feedback from the at least first and second user equipment in user equipment. At least one of the at least one retransmission request is transmitted in a first user device and the second user equipment in the case of the first signal is not assigned a respective decoded data of the first user device and the second user device to the base station to request a retransmission signal.
[0054]
The processing unit 106 may be configured to respond to a retransmission request, the processing power of a first signal portion and a second portion of a power signal to a predetermined coefficient to obtain a second processing signal distribution.
[0055]
Then, the transmitting unit 102 may be further configured to transmit a second signal assigned to the first user and the second user equipment device to perform a first allocation of the combined signal and the second signal is assigned by the first user device and the second user equipment obtain data and the first data for a user equipment for a second user equipment.
[0056]
It should be understood that, although the described base simultaneously to both the first user device and the second user equipment transmits the retransmission in the retransmission signal, but the present invention is also intended to be given only to the base station a retransmission request from the user equipment re examples of its transmission signal. However, for convenience of description herein, to the base station after receiving the retransmission request retransmission of the signal are sent to all of the devices described as an example, the user equipment and the base station to only issue a retransmission request signal transmits its visual retransmission signal for the power signal portion of the retransmission request is not transmitted to the user equipment a special case of the case of 0, which is not described separately one by one.
[0057]
In fact, since there is a correlation between the user data in multi-user decoding superposition transmission, the initial transmission if a user equipment has not successfully decoded, the user equipment is likely also other decoding failure and issue a retransmission request, as compared to using different transmission resources for a first user device and the second user equipment retransmission are general practice, a specific example of the present invention when the retransmission processing using superposition coding but still using the same transmission resource at the same time the first and second second user equipment retransmission, greatly improving the efficiency of resource use, and to a certain extent, to ensure the success rate of retransmissions, this performance gain in case of more user participation superimposed transmission equipment will become more apparent.
[0058]
Preferably, in order to reduce interference with respect to the transmission of other user equipment resulting in a first assignment signal and the second combined signal distribution, the first portion and the second power signal power signal portions is reduced or canceled.
[0059]
In order that the corresponding interference signals are combined in the reduced or eliminated, the device 100 performing superposition coding before retransmission, adjusted for the signal portions for the first user equipment and second user equipment portion of the signal on the same transmission resource interaction between, for example, if a transmission in the signal portions for a first user equipment and a second signal portions for a user equipment in an additive relationship transmitted on the same transmission resource, in this retransmission, means and 100 after subtraction transmitted on the same signal for a retransmission resource portion of the second signal portions for a user equipment of a first user equipment, the user equipment receives this end, the two transmissions received signals are combined i.e., it may be implemented as a weakened portion of the interference signal for the other user equipment. In other words, one of the first power signal and a power signal portion of the second part in the retransmission process by multiplying a negative coefficient of 1, and the other is unchanged or that the process is multiplied by the coefficient 1. Preferably, the predetermined coefficients may be determined based on the processing Hadamard matrix. Specifically, as an example, the predetermined processing coefficients hereinafter be referred to as "time code matrix layer", the horizontal dimension of the matrix represents the maximum number of retransmissions, and the vertical dimension represents a number of data streams (corresponding to the user equipment), which code matrix layer may be, for example, represented as follows:
[0060]
[0061]
In the example described, assuming a base station needs to transmit two data blocks b to the first user device and the second user equipment, respectively, F and b N , corresponding to the modulated symbol sequence D are F and D N . Assuming that the first user equipment is located weaker wireless channel (e.g., remote location), a second user equipment in which the strong radio channel (e.g. position closer). When the base station uses code matrix layer is 2 × (R + 1) (wherein, R + 1 represents the maximum number of transmissions) Hadamard matrix A, can be obtained by repeating a 2 × 2 Walsh matrix.
[0062]
[Number 0001]

[0063]
Wherein the first row of the matrix comprises a first predetermined coefficient for each user device in the retransmission number, the second row of the matrix comprises a predetermined coefficient times the second user equipment each retransmission. Assuming the initial transmission, the downlink channel between the base station and the first and second user devices are H F., 0 and H N, 0 . The base station according H F., 0 and H N, 0 attenuation for the power of the data block transfer two user equipments are assigned to P F., 0 and P N, 0 , P F., 0 > P N, 0 . For initial transmission, retransmission count is 0, the base station are using the coefficients A (0,0) = 1 and A (1,0) = 0 when the code matrix layer of one pair of column D F. And D N weighting and the results are weighted superposition string to be transmitted baseband signal X 0 (i.e., the first assignment signal), wherein
[0064]
( I.e., a first portion of a power signal, i.e., the second power signal portion).
[0065]
A first user device initially received signal may be characterized as:
[0066]
[Number 0002]

[0067]
Wherein, n- F., 0 plus noise at the time of receiving the first user device first.
[0068]
Second user equipment initially received signal may be characterized as:
[0069]
[Number 0003]

[0070]
Where n- N, 0 is the additive noise at the time of receiving the first user device first.
[0071]
Receiving a first user device X 0 after the second power signal portion considered part of the noise, according to H F., 0 and P F. To Y F., 0 demodulates the self-test (e.g., by a cyclic redundancy check CRC). The second user device receiving the X 0 after the first according to H N, 0 and P F. To Y N, 0 demodulates the obtained self-test B F. , Then according to B F. Restored interference signal obtained then Y N, 0 removal of an interference signal using according to H N, 0 and P N, 0 demodulate and self-test.
[0072]
If the first user device and a second self-test data blocks received correctly, the base station transmits the notification data blocks each corresponding to the next, such as the first and second user devices are transmitted 1-bit acknowledgment (ACK to the base station through a respective uplink channel )information. The base station waits for the user profile data block transmissions in the device after sending the sub-block, and the next block of data transfer upon receipt of confirmation.
[0073]
However, an error if the first user device and the second user data block in one of the self-test device receiving both occur, the base station may be notified retransmission of data blocks, such as first and / or second user equipment via a respective uplink channel 1 bit is transmitted to the base station without acknowledgment (NACK) information as a retransmission request. The base station after receiving the retransmission request, alternatively, h according to the downlink channel F, 1 to H N,. 1 attenuation for the two user equipments a transmission data block are re-allocated power P F, 1 and P N 1 (in order to reduce overhead or simplify computational complexity, the base station can reuse the previous power allocated for transmission, i.e., P F., 1 = P F., 0 , P N, 1 = P N, 0 ), in a predetermined processing coefficients (i.e., coefficients of a (0,1) = 1 and a (1,1) = 1 column of the code matrix in a layer of 1 -) of the retransmitted D F. and D N weighting and weighting results superposition baseband signal string to be transmitted X . 1 (i.e., the second assignment signal), wherein
[0074]
[Number 0004]

[0075]
It should be understood, in the above example, apparatus 100 may generate in advance a layer complete code matrix, each row corresponding to the data stream to each user equipment, with each column corresponding to each retransmission number, the corresponding lower number of retransmissions , removed from the column contains the corresponding predetermined coefficient to each data stream is conveniently processed user equipment. In an alternative example, the apparatus 100 can also be generated on the fly for the current coefficients corresponding to only the number of retransmissions and retransmission relates to a user equipment for processing.
[0076]
A first user device for the first retransmission (second transmission) the received signal may be characterized as:
[0077]
[Number 0005]

[0078]
Wherein, H F.,. 1 is a first channel when the user equipment first retransmission, n- F.,. 1 is additive noise first user equipment first retransmission.
[0079]
Receiving a second user device to the first retransmission signal may be characterized as:
[0080]
[Number 0006]

[0081]
Wherein, H N,. 1 for the second channel when the user equipment first retransmission, n- N,. 1 is the additive noise at the second user device for the first time retransmission.
[0082]
In an illustrative simplified example, the retransmission with the previous transmission time interval is very small, the base station can be ignored to a first channel and a second user equipment changes, the two transmissions transmit power is also used unchanged (i.e., H F.,. 1 = H F., 0 , H N,. 1 = H N, 0 , P F.,. 1 = P F., 0 , P N,. 1 = P N, 0 ), a first user device based on two views, respectively downlink data transmission received Y F., 0 and Y F.,. 1 is forward combined signal is combined forward:
[0083]
The F = the F, 0 + y F, 1
[0084]
Wherein the portion of the second signal on the user equipment is eliminated, and the user equipment on a first signal portion is enhanced, and thus the first user device which is capable of decoding a target block of data.
[0085]
On the other hand, the second user equipment receives the downlink data transmission based on the two Y N, 0 and Y N,. 1 negatively to the combined, the combined signal is negative is:
[0086]
The N = the N, 0 -the N, 1
[0087]
Wherein the user equipment on a first portion of the signal is eliminated, and the user equipment on a second signal portion is enhanced, whereby the second user device is able to decode its target data block.
[0088]
As an alternative embodiment, in a case where two transmissions transmit power as well as the channel changes significantly, the first user equipment to receive downlink data transmission based on the two Y F., 0 and Y F.,. 1 following forward the merger, the merger is a positive signal:
[0089]
[Number 0007]

[0090]
From Y F seen, Y F, 0 and Y F,. 1 are multiplied by certain parameters before being combined forward, these parameters contribute to the specific use of mathematical means of enhancing d in the case of channel power variation and F and weaken d N . It will be appreciated that those skilled in the art can also be designed according to the idea of the present invention other specific parameters in advance y before treatment combined F, 0 and y F.,. 1 to achieve the same purpose, for example, a formula in which the section on the power removed, the present this invention does not enumerate. Then, the first user equipment demodulates yF with self-test, obtaining the target data stream bF.
[0091]
On the other hand, similarly, based on the second user device to Y N, 0 and Y N,. 1 negatively to the combined, the combined signal is negative is
[0092]
[Number 0008]

[0093]
From Y ' N can be seen, D N is enhanced, D F. Interference power is weakened. The second user equipment Y ' N demodulate the self-test, attempts to obtain the target data stream B N .
[0094]
If the second user equipment can not obtain the object data stream B N , also based on the Y N, 0 and Y N,. 1 is forward combined signal is combined forward
[0095]
[Number 0009]

[0096]
From Y " N visible, d F. Has been enhanced, d N interference power weakened second user equipment Y" N demodulate the self-test to give B F. , Then removed in the interference signal in y'N and d N demodulate the self-test, to give B N . Alternatively, the second user device can also be combined to give do first positive Y " N and b obtained in the above method for decoding N , can not be successfully decoded in the case where the re-do combined to give a negative Y ' N which decrypts b N .
[0097]
As another embodiment, the base station notifies only the first user equipment D F. Allocated power, and notifies the user equipment of the second signal part D N allocated power. A first user device based on Y F, 0 and Y F,. 1 aimed at eliminating d N d-interference F enhanced combined,
[0098]
[Number 0010]

[0099]
From Y F. Can be seen, D F. Has been enhanced, D N of the interference is eliminated. Then the first user equipment to Y F. Demodulates the self-test, obtaining the target data stream B F. .
[0100]
Similarly, the second user device based on the first Y N, 0 and Y N,. 1 aimed at eliminating D F. Interference enhanced D N to the combined negative:
[0101]
[Number 0011]

[0102]
From Y ' N can be seen, D N is enhanced, D F. Interference power elimination. The second user equipment Y ' N demodulate the self-test, attempts to obtain the target data stream B N .
[0103]
If the second user equipment can not obtain the object data stream B N , based on Y N, 0 and Y N,. 1 aimed at eliminating D N interference enhanced D F. Forward the combined signal as the combined forward:
[0104]
[Number 0012]

[0105]
From Y " N visible, D F. Has been enhanced, D N of the interference is eliminated. And then a second user device based on Y N, 0 and Y N,. 1 negatively to the combined, the combined signal is negative is
[0106]
[Number 0013]

[0107]
And then the second user equipment Y " N demodulate the self-test to give B F. , Then Y" ' N of the interference signal is removed and D N demodulate the self-test.
[0108]
When the data signal is demodulated, in one example, the first and second user equipment known transmission power P F. And P N , for example, by the base station to control signaling indicating the first and second user equipment transmission power P F. and P N , the user equipment according to, for example, a cell-specific reference signals (CRS), a channel state indication - reference signal (CSI-RS) to the estimated channel H F. and H N , thereby solving the corresponding data B F. or B N .
[0109]
On the other hand, after the first transmission, if the user equipment receives the first error and the second user equipment receives correctly, as one embodiment, a predetermined coefficient by the base station may transmit only one data block for the first user device (for example, P N, 1 is set to 0), the first user equipment may attempt to retransmit the failed separate demodulates case, according to a layer corresponding to its own code [a (0,0), a ( 0,1)] for twice before and after the received combined signal is positive, since the combined signal, the signal portion of the first user equipment is enhanced, so that the possibility of the first user device decodes the data greatly improved. Of course, in this case, the base station can simultaneously transmit the same manner as described above for the first user data block and the second user equipment device, and to eliminate the interference signal portion through said merger.
[0110]
On the other hand, after the first transmission, reception error if the second user device, a first user equipment receives correctly, as one embodiment, a predetermined coefficient by the base station may transmit only one data block for the second user equipment, a second user device may attempt to separate demodulates the retransmission failure, according to a layer corresponding to its own code [a (1,0), a (1,1)] before and after the two received signals are combined negative Since the combined signal, the signal portion of the second user equipment is enhanced, so that the second user device data obtained by decoding the possibility of their greatly increased. Of course, in this case, the base station can simultaneously transmit the same manner as described above for the first user data block and the second user equipment device, and to eliminate the interference signal portion through said merger. That is the case, the first user device and the second user equipment only a reception error, the base station may also simultaneously transmit the same manner as described above for the first user data block and the second user equipment device, and the above-described manner were combined to eliminate the interference signal portion.
[0111]
It should be noted, in the case of the data block retransmission separate demodulates the retransmission of the user equipment failure, in addition to the above example, the user equipment may have a variety of decoding schemes merge. For example the second user equipment in the preceding paragraph may be received before and after the two signals are combined so as to eliminate the forward D N , and previously decoded D F. To push down the objective data obtained after D N , or a combination thereof in a particular order perform a stepwise decoding scheme, here for brevity not individually exemplified.
[0112]
The above process may be repeated retransmission of user data to the maximum retransmission limit, if still demodulation fails, the announced transmission fails, abandon the transmission. Data retransmission limit number of times, for example, the base station may be performed by higher layer configuration, and indicated to the user equipment through each of the signaling, the invention is applicable, for example, the maximum number of retransmissions maxHARQ-Tx configured by radio resource control (RRC, Radio Resource Control).
[0113]
It should be noted that although in the example described above, matrix elements based on a layer of a Hadamard matrix code matrix determined is 1 or -1, but there may be elements of other elements in addition to 1 or -1, It can be achieved as long as the combined signal, the first power signal portion and a second power signal portions is reduced or canceled to.
[0114]
It should also be noted that in the example described above, the first user device and a second user device respectively perform the addition and subtraction of the positive or negative merge operation, but may be two user equipment perform the addition or subtraction of positive or negative merge operation, thereby to decode the first or second power signal corresponding to the data portion of a power signal, a power signal and deduce the other portion of the corresponding data.
[0115]
That is, the exemplary calculation procedure described above is merely exemplary and not limiting, and those skilled in the art may be adjusted according to the above calculation process of the principles of the present disclosure, that such adjustments are within the scope of the present disclosure.
[0116]
Further, it should be understood that in addition to the processing power of a first portion and a second power signal to a predetermined signal processing section processes the factor or substituted with a first portion and a second power signal to a predetermined portion of a power signal processing coefficients, in response to retransmission request processing unit 106 may further be configured to transmit a power of at least a first portion and a second power signal power signal portion is adjusted to obtain a second signal distribution.
[0117]
Specifically, assuming the transmission power is greater than the first power signal portion transmission power of the second power signal portion, when at least one signal at the first user device and the second user equipment failed to be received, the processing unit 106 may weight the transmit power is further increased when the first signal portion transmission power, and correspondingly reduce the transmission power of the second power signal portion such that the first user and the second user equipment device may be a signal based on the first signal and the second dispensing distribution the combined signal, first decoding a first signal portion corresponding to the power of the data, and then introduced to a second power signal portion corresponding to data eliminated by the nonlinear disturbance such as a serial interference cancellation.
[0118]
Preferably, in order that the first and the second user equipment to the user equipment are allocated to the first signal and the second signal distribution corresponding to perform a merge operation (e.g., the addition operation or subtraction operation) to eliminate interference and to maximize reduce the computational load, the transmitting unit 102 may be further configured to separately indicate how to perform the merge operation to merge the first user device and the second user equipment sends an indication to the first user equipment and second user equipment in accordance with a first indication of combined allocation signal and the second signal are combined allocation. Preferably, with respect to the combined instruction transmitting unit 102 included in the higher layer signaling may indicate (eg, RRC signaling, the MAC layer signaling, etc.) to instruct the user equipment through the merging, the indication may comprise the above combined layer codebook matrix and / or the respective user equipment corresponding to the row number. In the instant exemplary base station side to generate predetermined processing coefficients, it is also possible through physical layer signaling (e.g., downlink control information, DCI) and other predetermined processing coefficients to notify the first user equipment and second user equipment for the current transmitting base station employed, addition or subtraction of the combined operation. In the case where the combined indication includes physical layer signaling, the signaling may be transmitted through a physical downlink control channel (the PDCCH), and having a good time-varying in this case.
[0119]
Superposition coded multi-user regarding the most likely scenario is only an application of both a user device and a remote user device closer to the common transmission resources, therefore, in an alternative example, the base station and the user equipment-side side for example, pre-knowledge of the code matrix when the total layer, when the code matrix of the fixing layer corresponds to the first row is a retransmission processing coefficient remote user device, the second row corresponds to a fixed retransmission of the user equipment near processing coefficients, in this example, the memory of the user equipment when the prestored code matrix layer, and the user equipment may be determined, for example, it is closer or farther, respectively, according to two user equipments a transmission power of the base station indicated by the user equipment (remote power, power close to small), and further when the corresponding predetermined coefficient code reading layer matrix for the merge operation.
[0120]
Preferably, the merged indication may perform a merge operation to enhance the power of the higher power signal portion of the first signal portion and a second portion of the power signal. That is, as described above, a power signal to said first portion and a second portion of a power signal if the first signal power is greater than the second power portion signal portion, then the indication may be combined in a first user device and the second user device to the first an allocation signal and the second signal distribution were performed by adding merge operations, to enhance the power of a first signal portion so that a first user device and the second user device can be a power signal to a first portion of decoded data corresponding to, and Release of power to the second signal portion corresponding to data such as a serial interference cancellation. Conversely, if the power of the first signal portion is smaller than the second power signal portion, then the indication may be combined in a first user device and the second user device to the first distributed signal and the second signal distribution are combined performing a subtraction operation, in order to enhance a second power signal portion so that a first user device and the second user device can be first decoded signal portion corresponding to the second power of the data, and then introduced to a first power signal portion corresponding to the serial data, for example, by eliminating the interference.
[0121]
Further, preferably, the merged indication may perform a merge operation, in order to enhance the power signal portions are respectively for the first user and the second user equipment device a first portion and a second power signal power signal portion. That is, the base station may indicate a first user device and the second user equipment performs a corresponding merge operation to enhance the power of the respective signal portion corresponding to the target data blocks.
[0122]
It should be understood that the combined indication may be optional. That is, the base station may not send an indication to the combined user device, user equipment according to general self default merge operation is performed (e.g., adding merge operation), if not based on the decoded data corresponding default merge operation may be performed again with Save merge operation. In other words, the user equipment can decide how to merge operations. In this way, you can reduce signaling overhead.
[0123]
It will be appreciated, the first initial transmission power signal portion signal and the retransmission signal while the above given of the retransmission signal is processed such that the combined power signal or the second portion is reduced or canceled exemplary process, these It is only an example, and not limitation, and those skilled in the art may modify the above-described process according to the principles of the present disclosure.
[0124]
Function described above with reference to the base station side apparatus configuration example in FIG. 1, next will be described with reference to FIG. 2 functional configuration example of a user equipment apparatus-side wireless communication system of the present disclosure in another embodiment. FIG 2 is a block diagram of a functional configuration example of a wireless user equipment side communication system according to another embodiment of the present disclosure of embodiments of the apparatus shown. The apparatus may be located in a user device or may be located on the user equipment side.
[0125]
2, the apparatus 200 according to this embodiment may include a receiving unit 202, a processing unit 204 and transmission unit 206. The functions of the respective units are described in detail below configuration example.
[0126]
The receiving unit 202 may be configured to receive a first signal from a base station assigned, wherein the first allocation signal is synthesized using superposition coding and includes at least a first portion of the first power signal and the second user equipment for the user equipment for a second second power signal portion.
[0127]
The processing unit 204 may be configured to data for the first user device according to a first assignment signal obtained. Specifically, for example, by the processing unit 204 may receive interference suppression, a demodulation and self-test, to obtain the data for the first user device from a first assignment signal.
[0128]
Due to the presence of interference, the processing unit 204 may not be correctly decoded in accordance with a first assignment signal corresponding data. In this case, the transmission unit 206 may be configured in the processing unit 204 according to the first signal has not been allocated for the user equipment if the first data, send a retransmission request to the base so that the base station may send to the first user equipment a second assignment signal.
[0129]
The receiving unit 202 may further be configured to receive a second assignment signal from the base station, the second is a base station assignment signal in response to a retransmission request for a first user equipment and second user equipment in at least one feedback coefficient to a predetermined process a first portion and a second power signal power signal processing section obtained. The specific process to obtain the second signal is allocated can be found in corresponding positions above description is not repeated.
[0130]
Next, the processing unit 204 may further be configured to assign the first signal and the second signal are combined distribution, to attenuate or eliminate one of the first power signal portion of the combined signal power and a second signal portion, thereby obtaining data for the first user equipment.
[0131]
Specifically, as described above, the processing unit 204 may perform a merge operation to reduce or eliminate the power of the second signal portion to decode a first power signal directly corresponding to the data portion, or may first be decoded by performing a merge operation in which higher power signal portion (e.g., the second power signal portion), according to the combined result, nonlinear disturbance such as a serial interference cancellation indirectly to the first power signal portion corresponding to data eliminated.
[0132]
Preferably, the processing unit 204 may further be configured to assign the first signal and the second signal are combined distribution, higher power signal portion to enhance the power of the first signal portion and a second portion of the power signal, compared to the first decoded after the high power signal portion corresponding to the data, then, for example, by non-linear interference cancellation interference introduced to the lower power signal portion corresponding to data eliminated.
[0133]
Alternatively, as a preferred example, the processing unit 204 may further be configured to assign the first signal and the second signal are combined distribution, in order to enhance the power of the first signal portion for the first user device. Similarly, a second user-side device may also perform similar processing. That is, the processing unit of the user device 204 may decide how to merge operation, a power signal to enhance the portion of their target data block corresponding to the user equipment, can be directly obtained the desired object data.
[0134]
Preferably, for each user equipment that are capable of performing the merge operation corresponding to the respective decoded data, the receiving unit 206 may also receive an indication from the base station combined to the processing unit 204 may be further combined according to the indication of the first and second assignment signals performing a respective second distributed signals merge operation (e.g., the addition or combined phases were combined subtraction). The combined indication may be included in, for example, higher layer signaling (eg, RRC signaling, MAC layer signaling, etc.) or physical layer signaling (e.g., DCI) in. Preferably, as described above, it may not necessarily be indicative of combined separately for each different user devices, but may also be combined indicating perform a merge operation to enhance the power of a first signal portion and a second portion of the signal power higher power a power signal or a signal component enhancement portion of each target data block corresponding to the user equipment.
[0135]
When the decoded data signal in a case where the user equipment known transmission power, the processing unit 204 may further be configured to estimate channel state (above H0) according CRS or CSI-RS from a base station, according to transmit power and channel status Solutions to the corresponding data.
[0136]
It should be noted here with reference to the device user equipment terminal depicted in Figure 2 is corresponding to the above apparatus base end illustrated in Figure 1 with reference to the place here not described in detail described at the corresponding positions see above may be, are not repeated here. Next, the combining means and a user equipment terminal station side described above, according to the present disclosure will be described signaling interaction flow for a downlink transmission embodiment.
[0137]
FIG 3 is a flowchart illustrating a signaling interaction process in accordance with an example embodiment of a downlink transmission for the embodiment of the present disclosure.
[0138]
As shown in FIG 3, in step S31, the base station and the first number of data streams in accordance with the maximum number of retransmissions beforehand defined time code matrix layer. Then, in step S32, the base station indicating a data stream number corresponding to the user equipment. Next, in step S33, the base station determines the code layer parameters used for the transmission of data block from the retransmission sequence number and the data stream number, and use this parameter to the modulated data block weighting. For the initial transmission, retransmission sequence number may be defined as 0. Then, in step S34, the base station calculates the transmission power of each data block, and data blocks do weighted power adjustment, and in step S35, the data blocks superimposed power adjustment. Then, in step S36, the base station sends a signal to the user equipment superimposed. The user equipment after receiving the superimposed signal, in step S37, the received data block abutting and to demodulate the interference sorting, demodulated serial interference cancellation, self-test and CRC demodulated data in step S38 . In step S39, when there is one or more times retransmissions for a data block is not correctly demodulated, when a user equipment in accordance with its corresponding level code, based on the combined principle of linear superposition of the forward reception power, and POST crosstalk interference cancellation and demodulation, and transmits to the base station in the self-test results at step S310. Finally, in step S311, the base station determines if the data block needs to be retransmitted, the base station retransmits the corresponding sequence number is incremented, repeat steps S33 to S310, the retransmitted data block; otherwise, the base station resets a retransmission sequence number 0, repeatedly performed steps S33 to S310, and transmits a new data block.
[0139]
It should be noted, the above-described signaling interaction process is merely exemplary and not limitation, the description above with reference to FIGS. 1 and 2, above may be modified signaling interaction process. For example, the processing in step S34 to the data block transmission power adjustment is optional, this step can be omitted. Further, the step of the base station may increase the user equipment transmits the merged indication that the user equipment is not always as performing a forward merge operation in step S39 and the same signal is demodulated to eliminate the interference by non-linear, but may direct the merged performs a corresponding positive or negative merge operation, to eliminate or attenuate the interference signal portion, in order to demodulate the respective data signal. As another example, although the form of a code matrix where a layer of pre-defined coefficients, but the base station may not be defined in advance when the end of the code matrix layer, but the retransmission signal processed according to the actual reception conditions. Of course, those skilled in the art in accordance with the principles of the present disclosure may also be other conceivable ways to modify a signaling interaction process described above, and all such modifications should fall within the scope of the present disclosure.
[0140]
Above with reference to FIGS. 1 to 3 described the case of downlink transmission, the techniques of the present disclosure is equally applicable to the case where uplink transmission. The following will describe the case of uplink transmission 4 to 6 with reference to FIG.
[0141]
FIG 4 is a functional block diagram of a wireless communication system according to an embodiment of the present disclosure in a further configuration example of the apparatus shown. The device may be located within a base station or a base station side.
[0142]
4, the apparatus 400 according to this embodiment may include a receiving unit 402, processing unit 404 and transmission unit 406. The functions of the respective units are described in detail below configuration example.
[0143]
The receiving unit 402 may be configured to receive the first signal distribution, the first assignment signal comprises at least a first portion and a second power signal power of the first signal and the second user equipment in user equipment transmitted on the same first radio transmission resource section. The base station transmits a respective signal to the particular resource, the first user equipment and second user equipment frequency in the same time, the base station so that a first end of the received assignment signal is a signal corresponding to the user equipment from the two superimposed .
[0144]
The processing unit 404 may be configured separately from the first data device and user data from the second user device according to a first assignment signal obtained.
[0145]
Due to the interference, the processing unit 404 may be unable to extract the data from the first user device and the second user equipment only in accordance with a first assignment signal correctly. Accordingly, the transmission unit 406 may be configured in a first assignment signal processing unit 404 is not successfully obtained according to the situation data of the first user device and the second user equipment from at least one of the first user and the second user equipment apparatus transmits a retransmission request.
[0146]
It should be understood, the base station has successfully demodulate data which the user equipment, the base station to the user equipment may send a retransmission request, so that part of the power of the signal from the user equipment is 0 in the retransmission. Moreover, generally, if not successfully demodulate data wherein a user equipment, the possibility of successfully demodulated data from another user device is small, it is often necessary to simultaneously transmit two user equipment retransmission request, but it does not exclude the retransmission request is transmitted only to one user equipment. However, for convenience of description herein, to the base station to the user equipment are two retransmission request is transmitted will be described as an example, but not equivalent to the power of the retransmission from the user apparatus to the case wherein a user equipment transmits a retransmission request 0 is a special case of the signal portion, which is not described separately one by one.
[0147]
Accordingly, the receiving unit 402 may further receive a second assignment signal, the second signal may comprise at least a third dispensing a power signal from the first user equipment and second user equipment in response transmitted on the same transmission resource to a second radio retransmission request power signal portion and a fourth portion, the third portion and the fourth power of the power signal is a predetermined signal processing section of the first power coefficient signal portion and a second portion for processing a power signal obtained. In the case where, for example, the base station transmits a retransmission request to only one of the first user and the second user equipment device, the third power of the corresponding signal portion or the fourth portion may be a power signal to zero.
[0148]
Then, the processing unit 404 may be combined to assign a first signal and the second signal distribution to obtain data from each of the first user and the second user equipment device. Preferably, the first distribution signal and the second combined signal distribution, the first signal portion and the power of the third power signal portion cancel each other out or reduced, the second power or signal portion and the fourth power signal portion or cancel each other attenuated . Specifically the first portion and the second power signal power signal portions are processed to obtain a third and a fourth power signal portion and the power portion relative to each other to eliminate interference signal processing portion to above with respect to the demodulated data through the merge operation substantially the same as the case of downlink transmission, are not repeated here.
[0149]
Preferably, as described above, the processing unit 404 may further perform non-linear interference cancellation in accordance with the result of the merger. Specifically, in the case described above, extract the data from the first user device and a second one of the user equipment by the merge operation, the data may be introduced from another device by a user such as a serial interference cancellation.
[0150]
Preferably, the base station by the processing unit 404 respectively determines the current radio conditions first power signal portion, the second power signal portion, the third portion and the fourth power of the power signal each signal portion transmission power, and sends to the unit 406 a first user device and the second user equipment transmit power indication, to inform the determined transmission power to the first user device and the second user equipment, so that the first user device and the second user device may transmit the power transmission using a corresponding first a power signal portion, the second power signal portion, the third portion and the fourth power signal power signal portion. It should be understood, the transmitting power may be pre-determined without the need to determine the base station side, so that the user equipment can use the predetermined transmission power to transmit its data to the base station.
[0151]
Further, preferably, the processing unit 404 may be further configured to determine a first radio transmission resource and the second radio transmission resource, and the transmitting unit 406 may be further configured to indicate to the first user device and the second user equipment resources to a first radio transmission resource and the second radio transmission resource. Alternatively, the first user device and the second user equipment may also transmit respective predetermined data on a good radio transmission resources without the base station side to determine.
[0152]
Further, the processing unit 404 may further be configured to determine the predetermined processing coefficient, and transmission unit 406 may transmit the predetermined process on the determined coefficients to the first user device and the second user equipment, the user equipment so that the first and second user equipment use processing a first predetermined power coefficient of the signal portion and a second portion of the power signal processed to obtain a third portion and a fourth power signal power signal portion. Of course, the predetermined processing coefficients may be pre-determined, without requiring the base station side determination.
[0153]
Preferably, the power instruction, a resource indication and predetermined processing coefficients may comprise an uplink grant signaling (UL grant) is transmitted through the PDCCH in the base station.
[0154]
Next, FIG 5 depicts a functional configuration example of a wireless communication system according to an embodiment of the present disclosure further embodiment of the apparatus will be described. FIG 5 is a block diagram illustrating a functional configuration example of the radio communication system of the present disclosure in another embodiment of the apparatus of the embodiment. The apparatus may be located in user equipment or at the user equipment side.
[0155]
5, the apparatus 500 according to this embodiment may include a transmitting unit 502, receiving unit 504 and processing unit 506. The functions of the respective units are described in detail below configuration example.
[0156]
The transmitting unit 502 may be configured to transmit a first transmit power to a first power signal to the base station on the same portion of the second user equipment transmit power of a second radio transmission resource signal portion a first radio transmission resource, wherein the second user device for example, may be transmitted to the second power of a second signal portion transmission power. Thus, the base station ends the received signal, the synthesized signal corresponding to a power of a first signal portion and a second portion superimposed on the power signal.
[0157]
The receiving unit 504 may be configured to receive a retransmission request from the base station. Without success to get the data from the first user device and the second user equipment at a base station at least one end of the synthesis signal superimposed above, the base station may request the first user equipment and second user equipment retransmission.
[0158]
The processing unit 506 may be configured to respond to a retransmission request for a first power signal processing section to process the predetermined coefficient to obtain a power of the third signal portion. Similarly, the second user equipment may be in response to the retransmission request processing section of the second power signals by a predetermined coefficient to obtain a fourth processed power signal portion.
[0159]
The transmitting unit 504 may be further configured to transmit power to a third power of the third signal transmission section to the base station on a second radio transmission resource signal power of user equipment transmits a fourth portion of the second radio transmission resource of the same, whereby the base station may signals transmitted by the two operations are combined to eliminate interference signals from other portions of the user equipment. That is, the base station side, after merging, the first portion and the third power signal power reduced or canceled each signal portion, or the second power and the fourth power signal portion or partially attenuated signal cancel each other out.
[0160]
As described above, the user equipment by the base station to determine the power for transmitting data signals, radio transmission resources for transmitting data signals and a predetermined retransmission processing coefficients for processing a signal, and said first and third transmission power Beaming power may include a power instruction from the base station in the first radio transmission resource and the second radio transmission resource may include a resource indication from the base station, and the power instruction, a resource indication and predetermined processing coefficients can be included in the base station by PDCCH transmission the uplink grant signaling.
[0161]
It should be understood, in addition to the contents described above, herein refers to the function at the base station and the user equipment end of the device in FIG. 4 and FIG. 5 uplink transmission case described configuration example above with reference to FIG downlink transmissions described and 2 where FIG base station a functional configuration example end and means the user equipment terminal is in many ways similar to, for example, and therefore the corresponding position can be found above not described detailed description of how retransmission signal is processed, and to eliminate the interference by merging operation , not discussed here.
[0162]
Next, the combining means and a user equipment terminal station side described above, the signaling interaction process will be described for uplink transmission. FIG 6 is a flowchart illustrating an example of a signaling interaction process for uplink transmission according to an embodiment of the disclosure.
[0163]
6, in step S61, the base station predefined code matrix layer. Then, in step S62, the base station apparatus to the user data stream number indicating its corresponding. In step S63, the base station calculates the transmission power of each user equipment transmits its data block, and indicates transmission power corresponding to the user equipment in step S64. In step S65, the user equipment determines layer code parameters used to send the data block from the retransmission sequence number and the data stream number, and using a code parameter of the layer to the modulated data block weighting. For the first transmission, the retransmission sequence number may be zero. Then, in step S66, the user equipment transmission power from the base station an indication of data blocks weighted power adjustment, and the transmission data block to the base station in step S67. In step S68, the base station received the data block is demodulated and to interfere with sorting, serial interference cancellation demodulation, and self-test of the demodulated data in step S69. In step S610, when there is more than one retransmission for data blocks not correctly demodulated, the base station may sequentially according to the level code when its corresponding parameters, based on the linear combination of the principle of superposition the received power of the forward, and serial interference cancellation demodulation. Finally, in step S611, the base station determines if the data block needs to be retransmitted, the base station retransmits the corresponding sequence number is incremented, steps S63 to S610 are repeatedly performed, the user equipment retransmission data block; otherwise, the base station a retransmission number is reset to 0, repeat steps S63 to S610, the user equipment transmits new data block.
[0164]
It should be understood, as described above, with the condition similar to downlink transmission, signaling interaction process described above is merely exemplary and not limiting, and those skilled in the art can modify the signaling interaction process in accordance with the principles of the present disclosure. For example, the processing in step S63 is optional, the user equipment transmission power for transmitting the data block may also be pre-determined. Further, for example, need not always as shown in step S610 as a signal is transmitted a plurality of times forward merge operation, but may be positive or negative to perform a merge operation according to actual needs, in order to reduce the computational load. Of course, those skilled in the art is of course also conceivable in accordance with the principles of the present disclosure other modifications aforementioned signaling interaction process, not enumerated herein, and such modifications shall be deemed to fall within the scope of the present disclosure.
[0165]
It should be understood that while the above describes an exemplary interaction between the functions of the radio communication system disclosed embodiments of the apparatus and the corresponding configuration example of a communication device, it should be understood that this is merely an example, and not limitation, and the present art the skilled person may implement the principles of the present disclosure of the above modified embodiment, for example, can be added to various embodiments, the functional modules, deletion and / or a combination, and that such modifications fall within the scope of the present disclosure.
[0166]
Example corresponds to the above-described embodiment of the apparatus, the present embodiment also provides a method for a wireless communication system is disclosed. The following are examples of the process according to the method disclosed in the radio communication system of the present embodiment 7 to be described in detail with reference to FIG. 10 to FIG.
[0167]
FIG 7 is a flowchart illustrating an example of a process of a method of a wireless communication system according to embodiments of the present disclosure. The method may be performed at the base station side.
[0168]
As shown in FIG 7, the method according to this embodiment may include a transmission step S702, step S704 and the receiving process step S706. Processing in each step will be described in detail below, respectively.
[0169]
First, at step S702, the transmission may be transmitted to a plurality of user devices comprises at least a first user equipment and the second user device using the first allocation signal superposition coding synthesis, the first assignment signal comprises at least for the first user equipment a first portion and a second power signal for the power signal portion of the second user equipment. The superposition coding principle known, based on the radio condition of the first user equipment and second user equipment, transmission power of the first power signal portion may be greater or less than the transmit power of the second power signal portion.
[0170]
The first user device and the second user equipment in each case at least one of data, a first user equipment and at least a second user equipment sends a retransmission request to the base station a first signal distribution obtained according to the not successful, in request signal again. In the receiving step S704, the retransmission request may be received from a first user equipment and second user equipment in at least one feedback.
[0171]
Then, the processing in step S706, the response to the retransmission request, the processing power of a first signal portion and a second portion of a power signal to a predetermined coefficient to obtain a second processing signal distribution. Preferably, the predetermined processing coefficient may be determined based on the Hadamard matrix, i.e., the processing coefficients may be above the predetermined "time code matrix layer."
[0172]
After the allocation processing to obtain a second signal processing step S706, the transmission may be transmitted further step S702 a second assignment signal to the first user device and the second user equipment, so that the first and the second user device to user device may the received signal and a first distribution to a second distribution signals respectively respective data.
[0173]
According to the above process, the first distributed signal and the second combined signal distribution, the first portion and the second power signal power signal portions is reduced or eliminated, thus greatly reducing the time for data from another demodulates one interfering user equipment, so that the possibility to successfully demodulate the respective data is greatly improved.
[0174]
It is noted that the methods described herein are embodiments of a wireless communication system as described above with reference to FIG. 1 device corresponding to the respective position and therefore not described above refer to the detailed description is not repeated.
[0175]
FIG 8 is a flowchart illustrating a process of a method of a wireless communication system to another embodiment of the present disclosure in the embodiment shown. The method may be performed at the user equipment side.
[0176]
8, the method according to this embodiment may include a receiving step S802, the processing in step S804 and transmits to step S806. Processing in each step will be described in detail below, respectively.
[0177]
In the receiving step S802, the first allocation signal may be received from a base station, the first allocation signal is synthesized using superposition coding and includes at least a first power signal for a first portion and a second user equipment for a second user equipment power signal components.
[0178]
Then, the processing in step S804, the data available for the first user device according to the first allocation signal.
[0179]
Subsequently, in the transmission step S806, the case may be in accordance with a first allocation signal for the first data have not been user equipment, the base station transmits a retransmission request.
[0180]
After the base station receives the retransmission request may be sent only to a user equipment a retransmission request to resend the data for the user equipment, or may be simultaneously re-transmits the synthesized signal superposition coding to two user equipments. In the receiving step S802, but also receive a second assignment signal from the base station, the second is a base station assignment signal in response to the retransmission request of the first user and the second user equipment in at least one feedback device to the first predetermined processing coefficients a power signal portion and a second portion for processing a power signal obtained. It should be understood, in a case where the user equipment to the base station only issue a retransmission request to resend the data, the data signal portion associated with the another user equipment in the second assignment signal can be regarded as 0.
[0181]
After receiving the second allocation signal, in the processing step S804, may be combined to assign a first signal and a second signal distribution, to obtain data for the first user device. Likewise, in the side of the second user equipment may perform similar processing to obtain the data for the second user equipment.
[0182]
It should be noted that the methods described herein embodiments described above with reference to FIG 2 a radio communication system corresponding to the device, and therefore can be found in the corresponding position not described herein above detailed description is not repeated.
[0183]
The method described in FIGS. 7 and 8 above with reference to in the case of downlink transmission, respectively, in the process of the base station side and the user equipment performs side, following a method performed separately in the base station side and the user equipment-side in a case where uplink transmission is described.
[0184]
FIG 9 is a flow chart illustrating a method for a wireless communication system according to an embodiment of the present disclosure in a further example of. The method may be performed at the base station side.
[0185]
9, the method according to this embodiment may include a receiving step S902, the transmission processing of step S904 and step S906. Processing in each step will be described in detail below, respectively.
[0186]
In the receiving step S902, the assignment may receive a first signal, the first assignment signal comprises at least a first portion and a second power signal power of the first signal and the second user equipment in user equipment transmitted on the same first radio transmission resource section. Since the base station transmits the respective data to a first user device and the second user device frequency resource in the same time, and therefore the base station side signal corresponding to the received data from both the user equipment is performed after the superposition coding data.
[0187]
Next, in the process step S904, data may be obtained respectively from the first user and the second user equipment device according to the first allocation signal.
[0188]
Then, at step S906 the transmission, in the case where data of the first user device and the second user equipment from at least one of a first assignment signal is not successfully obtained according to the first user device and the second user equipment retransmits request. Here, the base station is assumed to have two user equipment transmits a retransmission request, the base station transmits a retransmission request to not only the demodulated data which the user equipment can be considered as retransmission data from the device is 0 the case special case.
[0189]
In response to the retransmission request from the base station, resource re-transmit its data to the base a first user equipment and second user equipment will be in the same time-frequency. In the receiving step S902, the distribution also receives a second signal, the second signal distribution device comprises at least a first user and the second user device in response to the third power of the retransmission request signal transmitted on the same part of a second radio transmission resource and the fourth power signal portion, the third portion and the fourth power of the power signal is a predetermined signal processing section of the first power coefficient signal portion and a second portion for processing a power signal obtained. The predetermined process may be a pre-determined factor, and may be notified to the user equipment after the base station side determination. After receiving the second allocation signal, in the processing step S904, may be combined to assign a first signal and a second distribution signals, respectively, to obtain data from the first user device and the second user equipment.
[0190]
It should be noted that the methods described herein embodiments described above with reference to FIG. 4 of a wireless communication system corresponding to an apparatus, and therefore can be found in the corresponding position not described herein above detailed description is not repeated.
[0191]
FIG 10 is a flowchart showing an example of a process according to the present method of wireless communication system according to another embodiment disclosed in the embodiment. The method may be performed at the user equipment side.
[0192]
10, according to this embodiment the method may include transmitting step S1002, the receiving and processing step S1004 to step S1006. Processing in each step will be described in detail below, respectively.
[0193]
In the transmitting step S1002, the first power may be transmitted to a base station a first signal portion transmit power on the second user device transmits a radio signal transmission power resource of the second portion of the same first radio transmission resource. That is, the first user device and the second user device a respective transmission frequency resource data to the base station at the same time.
[0194]
Then, in the receiving step S1004, the retransmission request may be received from a base station.
[0195]
Next, in the processing in step S1006, in response to the retransmission request processing section to the first predetermined power signal processing coefficient to obtain a third power signal portion. Similarly, the second user device side, in response to the retransmission request processing section of the second power signals by a predetermined coefficient to obtain a fourth processed power signal portion.
[0196]
Then, in step S1002, the transmission may be transmitted to the third power signal portion of the third base station transmit power on the wireless transmission resource and a second user equipment transmits a fourth portion of the same signal power of the second radio transmission resource. That is, the first user device and the second user device frequency resource in the same time again, so that the base station may be combined by a plurality of times to the signals transmitted to the base station transmit power signal portion of each of the third and the fourth power signal portion to eliminate or reduce interference from other user devices to successfully demodulate the respective user data.
[0197]
It should be understood, each user equipment transmit power for a transmission signal, the wireless transmission resources used and a predetermined processing coefficients used may be determined at the base station side, and is notified to the user equipment by the base station through an uplink grant signaling, for example.
[0198]
It should be noted that the methods described herein embodiments described above with reference to FIG. 5 and a wireless communication system, an apparatus corresponding to the contents thus not described in detail herein in the corresponding position can be found in the above description, will not be repeated.
[0199]
It should be understood that while the above describes example methods according to the process of the radio communication system according to embodiments of the disclosed embodiment, but this is only an example, and not limitation, and those skilled in the art according to the foregoing embodiment may be modified principles of the present disclosure , for example, may be made to various embodiments, the step of adding, deleting, or a combination, and that such modifications fall within the scope of the present disclosure.
[0200]
Furthermore, it should be noted that although in the drawings and foregoing description the order of the flowchart describes the process according to the present exemplary wireless communication system in the disclosed embodiment of the method, but not according to the execution order of the method of the present disclosure limited thereto, but these processes may also be performed in parallel or performed as desired.
[0201]
According to an embodiment of the apparatus and method of the wireless communication system described above, the retransmission signal is superimposed by transmission treated to reduce or eliminate interference with respect to other user equipment transmissions caused, so that it is possible to successfully demodulate the possibility for a corresponding data is greatly improved, and also possible to improve the throughput of the superimposed transmission.
[0202]
Further, according to embodiments of the present disclosure, there is also provided an electronic apparatus, the electronic apparatus may include a transceiver and the one or more processors, the one or more processors may be configured to perform according to the above-described embodiments of the present disclosure the method of function of the wireless communication system or respective units.
[0203]
It should be understood, by order of the storage medium, and program product disclosed embodiments machine executable may also be configured to perform the method embodiment corresponding to the above-described embodiment of the apparatus, and therefore not described in detail herein content can refer to the previous corresponding describing the location, descriptions are not repeated here.
[0204]
Accordingly, for bearing the machine-executable instructions comprising a storage medium comprising program product is also disclosed in the present invention. The storage media include, but are not limited to, floppy diskettes, optical disks, magneto-optical disk, memory card, memory stick and the like.
[0205]
Further, it should be noted that the above-described series of processes and apparatus may also be implemented by software and / or firmware. In the case of implementing by software and / or firmware, or a network from a storage medium to a computer having a dedicated hardware configuration, for example, general-purpose personal computer shown in FIG. 111,100 program constituting the software is installed, various programs, which is installed in the computer when, to perform various functions, and so on. FIG 11 is a block diagram illustrating an example of configuration of a personal computer as the information processing apparatus of the present embodiment may be employed in the embodiment of the disclosure.
[0206]
In Figure 11, a central processing unit (CPU) 1101 or a program loaded in accordance with a read only memory (ROM) 1102 stored in the program from the storage section 1108 to a random access memory (RAM) 1103 performs various processes. In the RAM 1103, it is also necessary when storing data necessary for various processes performed when the CPU 1101 and the like.
[0207]
CPU 1101, ROM 1102 and RAM 1103 are connected to one another via a bus 1104. Input / output interface 1105 is also connected to the bus 1104.
[0208]
The following components are connected to the input / output interface 1105: an input section 1106 including a keyboard, mouse and the like; an output section 1107 including a display such as a cathode ray tube (CRT), liquid crystal display (LCD) and the like, a speaker, and the like; the storage section 1108 including a hard disk and the like; and a communication section 1109 including a network interface card such as a LAN card, a modem and the like. Via the network communication section 1109 performs a communication process such as the Internet.
[0209]
A drive 1110 is also connected to the input / output interface 1105. A removable medium 1111 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory and the like is mounted on the drive 1110, so that a computer program read therefrom is installed into the storage section 1108 as required.
[0210]
In the case where the foregoing series of processes by software, such as the Internet or a storage medium such as the removable medium 1111 configured to install the software program from the network.
[0211]
Those skilled in the art will appreciate, this storage medium is not limited as shown in FIG. 11 where a program is stored, distributed separately from the device to the removable medium 1111 providing program to the user. Examples of the removable medium 1111 include a magnetic disk (including a floppy disk (registered trademark)), CD (compact disc read-only memory that contains (CD-ROM) and digital versatile disc (DVD)), magneto-optical disk (including a Mini Disk (MD) (registered trademark )) and a semiconductor memory. Alternatively, the storage medium may be a ROM 1102, a storage section 1108 comprising a hard disk, etc., which the program is recorded and which is distributed to a user equipment together.
[0212]
Next, an application example according to the present disclosure will be described with reference to FIGS. 12 to 14.
[0213]
[Application Example on the eNB]
[0214]
(First Application Example)
[0215]
FIG 12 is a block diagram of a first example of a schematic configuration of the eNB art shows the present disclosure may be applied. eNB 1200 includes one or more antennas 1210 and base station apparatus 1220. Each base station apparatus 1220 and antenna 1210 may be connected to each other via a RF cable.
[0216]
Antenna 1210 each include a single or a plurality of antenna elements (such as including a multiple input multiple output (MIMO) antennas in a plurality of antenna elements), and base station apparatus 1220 to transmit and receive wireless signals. As shown in FIG. 12, eNB 1200 can comprise a plurality of antennas 1210. For example, multiple antennas 1210 may be compatible with a plurality of frequency bands used by eNB 1200. Although FIG. 12 shows an example in which the eNB 1200 comprises a plurality of antennas 1210, but the eNB 1200 may also include a single antenna 1210.
[0217]
The base station apparatus 1220 includes a controller 1221, a memory 1222, a network interface 1223 and a wireless communication interface 1225.
[0218]
The controller 1221 may, for example, CPU or DSP, and operation of the various higher layer of the base station apparatus 1220. For example, the controller 1221 generates packet data according to the data signal by the wireless communication interface processing in 1225, and to transmit the generated packet via the network interface 1223. The controller 1221 may be tied to the data from the baseband processor to generate a plurality of packet bundle, bundling and transmitting the generated packet. The controller 1221 may have a function to execute control logic: the control such as a radio resource control, radio bearer control, mobility management, admission control and scheduling. This control may be incorporated close to the core network node or the eNB performed. The memory 1222 includes a RAM and a ROM, and various types of control programs and data (such as terminal list, the transmission power data and schedule data) executed by the controller 1221.
[0219]
The network interface 1223 for the base station apparatus 1220 is connected to a core network communications interface 1224. The controller 1221 may communicate with the core network node or another eNB via the network interface 1223. In this case, eNB 1200 or other core network node eNB may be connected to each other through the logical interface (such as the S1 interface and the X2 interface). The network interface 1223 may also be a wired communication interface or a wireless communication interface for the wireless backhaul. If the network interface is a wireless communication interface 1223, compared with the band used by the wireless communication interface 1225, network interface 1223 can use a higher frequency band for radio communication.
[0220]
A wireless communication interface 1225 to support any cellular communication protocol (such as Long Term Evolution (LTE) and LTE- Advanced), and via the antenna 1210 is supplied to a terminal located in the cell eNB 1200 wireless connection. Wireless communication interface 1225 may generally include a processor 1226 and an RF circuit, for example, a baseband (BB) 1227. BB processor 1226 may perform, for example, encoding / decoding, modulation / demodulation, and a multiplexing / demultiplexing, and performs layer (e.g. L1, medium access control (the MAC), Radio Link Control (RLC) and packet data convergence protocol ( the PDCP)) in various types of signal processing. Instead of the controller 1221, BB processor 1226 may have the above-described part or all of the logic functions. BB processor 1226 may be a memory storing a communication control program, or is configured to execute a program comprising a processor module and associated circuitry. Update to the BB processor 1226 functional changes. The module may be inserted into the slot of the base station apparatus 1220 or card insert. Alternatively, the module may be a chip on a card or blade is mounted. Meanwhile, RF circuitry 1227 may include, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 1210.
[0221]
As shown, the wireless communication interfaces 122 512 may include a plurality of processors 1226 BB. For example, a plurality of BB processor 1226 may be compatible with a plurality of frequency bands used by eNB 1200. As shown, the wireless communication interfaces 122 512 may include a plurality of RF circuits 1227. For example, a plurality of RF circuitry 1227 may be compatible with a plurality of antenna elements. Although FIG. 12 shows a state where a wireless communication interface 1225 comprises a plurality of processors BB plurality of RF circuits 1227 and 1226 of the example, the wireless communication interface 1225 may also include a single processor BB 1226 or 1227 single RF circuit.
[0222]
(Second Application Example)
[0223]
FIG 13 is a block diagram of the second example of a schematic configuration of the eNB art shows the present disclosure may be applied. eNB 1330 includes one or more antennas 1340, 1350 and the base station apparatus RRH 1360. Each RRH 1360 and the antenna 1340 may be connected to each other via an RF cable. RRH 1360 and base station apparatus 1350 may be connected to each other via high-speed line such as a fiber optic cable.
[0224]
Each antenna 1340 includes a single or a plurality of antenna elements (such as including a plurality of antennas in MIMO antenna elements) and for RRH 1360 transmit and receive wireless signals. As shown in FIG. 13, eNB 1330 can comprise a plurality of antennas 1340. For example, a plurality of frequency bands a plurality of antennas 1340 is compatible with the eNB 1330 may be used. Although FIG. 13 shows an example in which the eNB 1330 comprises a plurality of antennas 1340, but the eNB 1330 may also include a single antenna 1340.
[0225]
The base station apparatus 1350 includes a controller 1351, a memory 1352, a network interface 1353, interfaces 1355, and a wireless communication connection interface 1357. The controller 1351, a memory 1352 and a network interface 1353 described with reference to FIG. 12 described controller 1221, a memory 1222 and a network interface 1223 the same.
[0226]
A wireless communication interface 1355 to support any cellular communications scheme (such as LTE and LTE- Advanced), and provided to the wireless communication terminal and the RRH 1360 is located corresponding to the sector antenna via RRH 1360 and 1340. Wireless communication interface 1355 may generally comprise, for example, a processor 1356 BB. In addition to the BB processor 1356 is connected to the RRH RF circuitry 13641360 1357 via the connection interface, the processor described in the same BB BB processor 1356 121 226 with reference to FIG. As shown, the wireless communication interfaces 135 513 may include a plurality of processors 1356 BB. For example, a plurality of BB processor 1356 may be compatible with a plurality of frequency bands used by eNB 1330. Although FIG. 13 shows a state where a wireless communication interface 1355 comprises a plurality of sample processors BB 1356, the wireless communications interface 1355 may include a single processor 1356 BB.
[0227]
An interface 1357 for connecting the base station apparatus 1350 interface (wireless communication interface 1355) is connected to the RRH1360. Interface 1357 may also be connected to the base station apparatus 1350 (a wireless communication interface 1355) is connected to the high-speed line RRH 1360 in the communication module.
[0228]
RRH 1360 includes a connection interface 1361 and a wireless communication interface 1363.
[0229]
Connection interface 1361 for the RRH 1360 (1363 wireless communication interface) connected to the interface of the base station apparatus 1350. Interface 1361 may also be connected to the high-speed lines in the communication module.
[0230]
A wireless communication interface 1363 to transmit and receive wireless signals via the antenna 1340. Wireless communication interface 1363 may generally comprise, for example, RF circuit 1364. RF circuit 1364 may include, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 1340. 13, wireless communication interface 1363 may include a plurality of RF circuits 1364. For example, RF circuit 1364 may support a plurality of a plurality of antenna elements. Although FIG. 13 shows a state where a wireless communication interface 1363 comprises a plurality of RF circuits 1364 example, the wireless communication interface 1363 may also comprise a single RF circuit 1364.
[0231]
eNB 1200 and eNB 1330 shown in FIGS. 12 and 13, and a transmitting unit and receiving unit 4 described in FIG wireless communication interface may be implemented by a wireless communication interface 1225, and 1355, and / or by using a wireless communication interface 1363 in FIG. At least a portion 1351 may be implemented by the controller 1221 and the base station controller functionality means the end of a wireless communication system in the processing unit.
[0232]
[Application Example of the user equipment]
[0233]
FIG 14 is a schematic block diagram of an arrangement 1400 shown in the present disclosure may be applied to smart phone technology. A smart phone 1400 includes a processor 1401, memory 1402, storage device 1403, an external connection interface 1404, the image pickup device 1406, a sensor 1407, a microphone 1408, an input device 1409, a display device 1410, a speaker 1411, a wireless communication interface 1412, one or more antenna switch 1415, one or more antennas 1416, bus 1417, a battery 1418 and an auxiliary controller 1419.
[0234]
The processor 1401 may, for example, a CPU or system on a chip (SoC), a smart phone and controls the application layer and the additional layer 1400 function. The memory 1402 includes a RAM and a ROM, and stores data and programs executed by the processor 1401. Memory device 1403 may include a storage medium, such as a semiconductor memory and a hard disk. External connection interface 1404 for connecting to an external device (such as a memory card, and a universal serial bus (USB) device) 1400 to the smart phone interfaces.
[0235]
Image pickup apparatus 1406 includes an image sensor (such as a charge coupled device (CCD) and complementary metal oxide semiconductor (CMOS)), and generates a captured image. Sensor 1407 may include a set of sensors, such as a measuring sensor, a gyro sensor, a geomagnetic sensor and an acceleration sensor. Microphone input to the smart phone 1408 1400 sound into an audio signal. The input device 1409 comprises, for example, configured to detect a touch on the screen of the touch sensor device 1410, a keypad, a keyboard, buttons or switches displayed, and receives operation input from a user or information. The display device 1410 includes a screen (such as a liquid crystal display (LCD) and organic light emitting diode (OLED) display), and displays the output image 1400 is a smart phone. 1400 intelligent audio signal output from the speaker 1411 phone is sound.
[0236]
A wireless communication interface 1412 to support any cellular communications scheme (such as LTE and LTE- Advanced), and performs wireless communication. Wireless communication interface 1412 may generally comprise, for example, a processor 1413 and an RF circuit BB 1414. BB processor 1413 may perform, for example, encoding / decoding, modulation / demodulation, and a multiplexing / demultiplexing, and performs various types of signal processing for wireless communication. Meanwhile, RF circuitry 1414 may include, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 1416. For wireless communication interface 1412 may be integrated with the BB processor 1413 and an RF circuit chip 1414 of a module. 14, wireless communication interface 1412 may include a plurality of processors BB plurality of RF circuits 1413 and 1414. Although FIG. 14 shows a state where a wireless communication interface 1412 comprises a plurality of sample processors BB plurality of RF circuits 1413 and 1414, the wireless communications interface 1412 may include a single processor BB 1413 or 1414 single RF circuit.
[0237]
Further, in addition to a cellular communication scheme, a wireless communication interface 1412 may support additional types of wireless communication scheme, such as a short-distance wireless communication scheme, a near field communication scheme and wireless local area network (LAN) scheme. In this case, a wireless communication interface 1412 may include a processor 1413 BB and each wireless communication scheme 1414 for RF circuits.
[0238]
Each of the circuits comprises a plurality (e.g. a circuit for different wireless communication schemes) in a wireless communication interface 1412 and switch between antenna connection destination of the antenna switch 1416 1415.
[0239]
Each antenna 1416 includes a single or a plurality of antenna elements (such as including a plurality of antenna elements in MIMO antenna), a wireless communication interface 1412 and for transmitting and receiving wireless signals. As shown in FIG. 14, a smart phone 1400 may include a plurality of antennas 1416. Although FIG. 14 shows an example in which a plurality of smart phone 1400 includes an antenna 1416, but also a smart phone 1400 may include a single antenna 1416.
[0240]
In addition, the smart phone 1400 may include an antenna for each wireless communication scheme 1416. In this case, the antenna switch 1415 may be omitted from the configuration of the smartphone 1400.
[0241]
1417 bus processor 1401, memory 1402, storage device 1403, an external connection interface 1404, the image pickup device 1406, a sensor 1407, a microphone 1408, an input device 1409, a display device 1410, a speaker 1411, a wireless communication interface 1412 and an auxiliary controller 1419 each other connection. Smartphone respective blocks 1400 through 1418 illustrated in FIG. 14 feeder batteries provide power to the feeder in the drawing is partially shown as a dashed line. Auxiliary controller 1419, for example, a smart phone operating functions 1400 minimum necessary in the sleep mode.
[0242]
Smart phone 1400 shown in FIG. 14, the transmitting and receiving units by using FIGS. 2 and 5 described may be implemented by a wireless communication interface 1412. The user equipment terminal apparatus function described above in at least part of the processing unit 1419 may be implemented by the processor 1401 or the secondary controller.
[0243]
Described above with reference to the accompanying drawings preferred embodiments of the present disclosure, the present disclosure is of course not limited to the above examples. Those skilled in the art that various changes and modifications may be obtained within the scope of the appended claims, and it should be understood that such changes and modifications naturally fall within the technical scope of the present disclosure.
[0244]
For example, in the embodiment comprises a plurality of functions in a single unit in the above embodiments may be implemented by separate devices. Alternatively, a plurality of functions implemented by a plurality of units, respectively, the above embodiments may be implemented by separate devices. Further, more than one of the plurality of functional units may be realized. Needless to say, such a configuration included in the technical scope of the present disclosure.
[0245]
In this specification, the steps described in the flowchart include not only the processing to be performed in time series order, but also in parallel or individually and not necessarily in time series processing performed. Further, even at the step of processing in a time series, needless to say, it may be appropriately changed in this order.

Claims

[Claim 1]Apparatus in a wireless communication system, the apparatus comprising: a transmitting unit configured to transmit to a plurality of user devices comprising at least a first user equipment and the second user device using the first allocation signal superposition coding synthesis, the allocation signal comprises at least a first power signal for a first portion of the first user device and the second power signal portion for the second user device; a receiving unit configured to receive from the first user device and the said second retransmission request of at least one user feedback device; and a processing unit configured to respond to the retransmission request, to process a predetermined power coefficient of the first signal portion and the second power signal portion processed to obtain a second assignment signal, wherein the transmitting unit is further configured to assign a second signal to the first user device and transmitting said second user equipment by the first user device and the said second user device to the first distributed signal and the second signal are combined to dispensing apparatus respectively for the first user And according to data for the second user equipment.
[Claim 2]
The apparatus according to claim 1, wherein, in said first combined signal and the second distribution signal distribution, the first portion and the second power signal power or signal portions is reduced offset.
[Claim 3]
The apparatus according to claim 2, wherein the processing unit is further configured to signal the first power transmitting portion and at least one of said second power signal portion of the power is adjusted to obtain the second allocation signal.
[Claim 4]
The device as claimed in any one of claims 1 to 3, wherein the transmitting unit is further configured to send an indication, respectively, to the first user device and the second user device indicating how to perform the merge operation merge, in merging the first distributed signal and the second signal is assigned by the first user device and the second user equipment according to the combined indication.
[Claim 5]
The apparatus according to claim 4, wherein the combining indication is included in the higher layer signaling or physical layer signaling.
[Claim 6]
The apparatus according to claim 4, wherein the combining indication to perform a merge operation to enhance the high power signal portion of the first portion and the second power signal power signal portion.
[Claim 7]
The apparatus according to claim 4, wherein the combining indication to perform a merge operation, respectively, to enhance the power of the first signal portion and the second portion of the signal power, respectively, for the first user device and the said power signal portion of the second user equipment.
[Claim 8]
The apparatus according to claim 1, wherein said predetermined process is based on the Hadamard matrix coefficients determined.
[Claim 9]
A wireless communication system apparatus, comprising: a receiving unit configured to receive the first allocation signal from a base station, wherein said assignment signal is a first synthesized using superposition coding and comprising at least a first user for the first device a power signal portion and a portion of the second power signal for the second user device; a processing unit, configured to obtain the data for a first assignment signal to the user equipment according to the first; and a transmission unit that is configured to said processing unit for a case where the first user equipment data, send a retransmission request to the base station of the first signal has not been assigned, wherein the receiving unit is further configured to receive from the base station dispensing a second signal, the second signal is assigned to the base station in response to a retransmission request of the first user and the second user device in at least one feedback device to a predetermined processing of the first power coefficient said second signal portion and the power portion signal obtained by processing, and wherein the processing unit is further configured Allocating the first signal and the second combined signal distribution to obtain the data for the first user device.
[Claim 10]
The apparatus according to claim 9, wherein, in said first combined signal and the second distribution signal distribution, the first portion and the second power signal power or signal portions is reduced offset.
[Claim 11]
The apparatus of claim 9 or claim 10, wherein the receiving unit further receives an instruction from the base station indicates how merging the merge operation, and the processing unit is further configured to operate according to the indication of the combined dispensing a first signal and the second signal are combined allocation.
[Claim 12]
The apparatus of claim 11, wherein the combining indication is included in the higher layer signaling or physical layer signaling.
[Claim 13]
The apparatus of claim 9 or claim 10, wherein the processing unit is further configured to assign said first signal and said second signal distribution are combined to enhance the power of the first signal and the second portion high power signal portion of the power signal portion.
[Claim 14]
The apparatus of claim 9 or claim 10, wherein the processing unit is further configured to assign said first signal and said second signal distribution are combined to enhance the first user for the first device power signal components.
[Claim 15]
The apparatus according to claim 9, wherein the processing unit is further configured to indicate a cell from the base station in accordance with specific reference signals (CRS) or a channel state - CSI-RS reference signal to estimate the channel state, so as to obtain for the a first device data of the user.
[Claim 16]
The apparatus according to claim 9, wherein the processing unit is further configured to perform linear interference cancellation based on the result of the merger.
[Claim 17]
Apparatus in a wireless communication system, the apparatus comprising: a receiving unit configured to receive the first signal distribution, the first assignment signal comprises at least a first user equipment and second user equipment in the same first radio transmission a first portion of the transmission power signal and the power signal portion of the second resource; processing unit data are arranged from the first user device and the second user device according to the first allocation signal is obtained; and transmitting unit is configured in the processing unit of the first signal is not successfully been allocated according to the situation from the first user device and the second user device in at least one of the data, to the first user apparatus and the second user device transmits a retransmission request, wherein the receiving unit is further configured to receive a second assignment signal, said second signal comprising at least a dispensing device of the first user and the second user device in response to the retransmission request signal power of the third portion and the fourth power of the signal transmitted on the same portion of a second radio transmission resource, the The third power and the fourth power signal portion signal processing coefficients in a predetermined portion of the first portion and the second power signal power signal portion obtained by processing, and wherein the processing unit is further configured dispensing the first pair and the second signal are combined to obtain a signal distribution data respectively from the first user device and the second user device.
[Claim 18]
The apparatus according to claim 17, wherein, in said first combined signal and the second distribution signal distribution, the first signal portion and the power of the third power signal portion cancel each other out or reduced, power signal or the second portion and the fourth power signal portion cancel each other out or reduced.
[Claim 19]
The apparatus according to claim 17, wherein the processing unit is further configured to determine the power of a first signal portion, the second power signal portion, the third portion and the fourth power signal power signal respective transmit power portion, and wherein the transmitting unit is further configured to the first user device and the second user device indicating transmission power, the transmission power is indicative of the determined.
[Claim 20]
The apparatus according to claim 19, wherein the processing unit is further configured to determine the first wireless transmission resource and the second radio transmission resource, and the sending unit is further configured to the first the user equipment and the second user device transmits a resource indication to indicate that the first radio transmission resource and the second radio transmission resource.
[Claim 21]
The apparatus according to claim 20, wherein the processing unit is further configured to determine the predetermined processing coefficient, and the sending unit is further configured to send the predetermined coefficient processing device to the first user and the second user device.
[Claim 22]
The apparatus according to claim 21, wherein said power indication, indicating the resource coefficients and the predetermined processing comprises uplink grant signaling.
[Claim 23]
The apparatus according to claim 17, wherein the processing unit is further configured to perform linear interference cancellation based on the result of the merger.
[Claim 24]
Apparatus in a wireless communication system, the apparatus comprising: a transmission unit configured to transmit power to a first and second user equipment in the transmission power of a second radio transmission resource signal portion of the same first radio transmission resource a first signal portion transmission power of the base station; receiving unit, configured to receive the retransmission request from the base station; and a processing unit configured to respond to the retransmission request processing coefficients in a predetermined signal to the first power partially processed to obtain a third power portion of the signal, wherein the transmitting unit is further configured to transmit a third transmission power resource in the radio transmission device of the second user portion of the fourth power of the same signal a second radio transmission to the base station transmit power signal portion of the third resource and the fourth power of the second signal portion is a user device in response to the retransmission request processing section to the second power signal to a predetermined processing coefficient obtained.
[Claim 25]
The apparatus according to claim 24, wherein said first and said third transmit power the transmit power includes a power indication received from the base station.
[Claim 26]
The apparatus according to claim 25, wherein the first radio transmission resource and the second wireless resource included in the resource transmission indication received from the base station.
[Claim 27]
The apparatus according to claim 26, wherein said power indication, indicating the resource coefficients and the predetermined processing comprises uplink grant signaling.
[Claim 28]
A method in a wireless communication system, the method comprising: a transmitting step of dispensing a first plurality of signals comprising at least a first user equipment and second user equipment transmits a user equipment using superposition coding to the synthesis, the first an allocation signal comprises at least a second power signal for a first portion of a power signal portion of the first user equipment and apparatus for the second user; receiving step for receiving from the first user device and the second second user equipment requests retransmission of at least one feedback; and a processing step of, in response to the retransmission request, the processing power of the first signal portion and the second portion to a predetermined signal processing power coefficients obtain a second signal distribution, wherein, in said transmitting step, the further first user device and the second user device to transmit the second assignment signal, by the first user device and the second the user equipment of said first distribution and said second signal distribution signal are combined to obtain data for the first user device and for the second Data user devices.
[Claim 29]
A method in a wireless communication system, the method comprising: receiving step of receiving a first signal from a base station assignment, wherein the assignment signal is first synthesized using superposition coding and includes at least a first user equipment for a first power signal portion and a second power signal for a portion of the second user device; a processing step of the first assignment signal to obtain data for the first user device according to; and a transmission step, according to the a case where the first signal has not been allocated data for the first user equipment transmits a retransmission request to the base station, which also receives the signal from the second base station is allocated in said receiving step, the second signal is assigned to the base station in response to a retransmission request of the first user and the second user device in at least one feedback device to the predetermined processing coefficients and said first power signal portion second power signal portion obtained by processing, and wherein, in said processing step further allocation of said first signal and said second sub- It is combined with the signal to obtain the data for the first user device.
[Claim 30]
A method in a wireless communication system, the method comprising: receiving step of receiving the first signal distribution, the first assignment signal comprises at least a first wireless transmission resource of the same first user equipment and second user equipment a first portion and a second power signal on the power transmission signal portion; processing step, data for the first user equipment and the second user device, respectively from the first signal distribution obtained in accordance with; and a transmitting step, in the case according to the first allocation signal is not successfully obtained from at least one of the first user equipment and the second user device data, to the first user and the second user device retransmission request transmitting device, wherein further a second assignment signal received in said receiving step, said second allocation signal comprises at least a first user equipment and the second user device in response to the retransmission request the third portion and the fourth power of the signal power of the signal transmitted on the same portion of a second radio transmission resource, and the third power and the fourth power signal portion Processing coefficients based in part on a predetermined number of said first portion and said second power signal power signal is obtained by processing section, and wherein, in said processing step further allocation of the first signal and the second assignment signals, respectively are combined to obtain data from the first user device and the second user device.
[Claim 31]
A method in a wireless communication system, the method comprising: a transmitting step for transmitting power to a first base station on a wireless transmission resource of the second user equipment transmits a second portion of the same signal power of a first radio transmission resource a first transmit power signal portion; receiving step of receiving a request for retransmission from the base station; and a processing step of, in response to the retransmission request processing section of the first power signal to a predetermined processing coefficient to obtain a power signal on the third section, wherein, in said transmission step, the radio transmit power to a third transmission resource with the second user equipment is the same as the fourth power signal portion of the second radio transmission resource the base station transmits the power of the third signal portion, said fourth portion of said power signal in response to the second user device to a predetermined retransmission request processing coefficient for processing of the second power signal portion obtained .