0001]This application claims the March 17, 2017 filed Chinese Patent Application No. 201710161135.X, entitled priority "electronic device and a method for wireless communications," a Chinese patent application, incorporated by reference in its entirety in the present application.
FIELD
[0002]Embodiment relates generally to the field of wireless communications of the present invention, particularly relates to managing wireless communications in a beam, and more particularly, to an electronic device and a method for wireless communication beam to provide an optimized management program.
Background technique
[0003]
In order to meet the requirements of future mobile communication, large-scale antenna to improve spectral efficiency and enhance the capacity of one of the key technologies of communication. In addition, since the millimeter wave (mmWave) spectrum band has plenty of resources available, therefore, mmWave cellular systems become an important research direction for future communications. In mmWave frequency band, in order to combat a significant attenuation and greater support mobility, the base station system require a substantial increase in the density of antenna elements and user terminals. However, considering the high cost of an analog circuit, and pure digital processing complexity factors too, digital - analog hybrid beamforming antenna structure will become the key technology of the future communications system.
[0004]
Therefore, efficient and robust beam management strategy is one of the important issues to be addressed in the future of communications.
[0005]
SUMMARY
[0006]
A brief overview of the present invention hereinafter in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical part of the invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form, as a prelude to the more detailed description that is discussed later.
[0007]
According to one aspect of the present disclosure, there is provided an electronic device for wireless communications, comprising: a processing circuit configured to: based on the received signal transmitted from the first remote radio communication device, from a predetermined set of beams selecting one or more candidate beams; and obtaining an optimal beam based on the one or more candidate beams pairs, so that optimum beam pair is the largest channel gain beam pair.
[0008]
According to another aspect of the present disclosure, there is provided an electronic device for wireless communications, comprising: a processing circuit configured to: generate a first signal to be transmitted to a remote wireless communication device; and a remote wireless communications device based on the use of according to a second signal beams each candidate one or more candidate beams of the first signal in the selected transmission, selecting one or more candidate beams from a second predetermined group of beams, to determine that the largest channel gain optimal beam for the optimal beams including one of a second one of the candidate beam candidate beams.
[0009]
According to one aspect of the present disclosure, a method is provided for wireless communication, comprising: receiving a first signal based on transmitted from the remote wireless communication device, selecting one or more candidate beams from a predetermined group of beams; and obtaining optimal beam based on one or more candidate beams pairs, so that optimum beam pair is the largest channel gain beam pair.
[0010]
According to another aspect of the present disclosure, there is provided an electronic device for wireless communications, comprising: generating a first signal to be transmitted to a remote wireless communication device; and based on using a remote wireless communication device according to a first selection signal or each beam of the second candidate signal transmitted in the plurality of candidate beams, the one or more selected second candidate beam from a predetermined group of beams, so that the channel to determine an optimal beam of maximum gain, including optimal beam a second one of the candidate beam and one of the candidate beam.
[0011]
Other aspects according to the present invention there is also provided a computer program product and computer program code for a method for an electronic device and having recorded thereon a computer program code for implementing the methods readable storage medium.
[0012]
The electronic device and method of an embodiment of the present application by selecting the candidate beam to narrow beam scanning range, can be efficiently, quickly and accurately determine the optimal beam pair.
[0013]
Detailed description of the preferred embodiments of the present invention in conjunction with the following drawings, the above and other advantages of the present invention will become more apparent.
BRIEF DESCRIPTION
[0014]
To further illustrate the above and other advantages and features of the present invention, the following drawings of specific embodiments of the present invention will be further described in detail in conjunction. The drawings together with the detailed description are included in the present specification and a part of this specification is formed. Elements having the same function and structure are denoted with the same reference numerals. It should be understood that a typical example of the present invention that these drawings depict only, and should not be considered as limiting the scope of the present invention. In the drawings:
[0015]
Figure 1 shows a digital - forming an exemplary structure of a hybrid antenna beam simulation;
[0016]
Figure 2 shows a prior art beam scanning scheme for a downlink;
[0017]
FIG 3 shows a prior art beam scanning scheme for uplink
[0018]
FIG 4 is a functional block diagram for an electronic device for wireless communications of the present application in accordance with one embodiment;
[0019]
FIG 5 schematically illustrates the omnidirectional transmission of signals between the wireless communication device;
[0020]
Figure 6 shows a schematic example of selecting two candidate beams;
[0021]
Figure 7 shows a schematic diagram of a second signal transmitted by the selected candidate beam;
[0022]
Figure 8 shows a schematic view of a remote wireless communication device selecting a second candidate beam is performed;
[0023]
Figure 9 shows a remote wireless communication device performs time-division for the candidate beam measured to determine a schematic view of an optimal beam pair;
[0024]
FIG 10 is a functional block diagram for an electronic device for wireless communications of the present application in accordance with one embodiment;
[0025]
FIG 11 shows a schematic elevation and azimuth angles;
[0026]
FIG 12 is a functional block diagram for an electronic device for wireless communications of the present application in accordance with one embodiment;
[0027]
FIG 13 is a functional block diagram illustrating an electronic device for wireless communication with another embodiment of the present application in accordance with;
[0028]
FIG 14 is a functional block diagram illustrating an electronic device for wireless communication according to another embodiment of the present application, according to embodiments;
[0029]
FIG 15 is a functional block diagram illustrating an electronic device for wireless communication with another embodiment of the present application in accordance with;
[0030]
FIG 16 shows a schematic view of a beam according to the information management program flow of an embodiment of the present disclosure;
[0031]
FIG 17 is a flowchart illustrating a method for wireless communication according to an embodiment of the present application;
[0032]
FIG 18 is a flowchart illustrating a method for wireless communication according to an embodiment of the present application;
[0033]
FIG 19 is a block diagram of a first example of a schematic configuration of the eNB art shows the present disclosure may be applied;
[0034]
FIG 20 is a block diagram of the second example of a schematic configuration of the eNB art shows the present disclosure may be applied;
[0035]
FIG 21 is a block diagram illustrating an example of a schematic configuration of a smart phone art shows the present disclosure may be applied;
[0036]
FIG 22 is a schematic block diagram illustrating the configuration of the car navigation apparatus shown art may be applied to the present disclosure; and
[0037]
FIG 23 is a block diagram of an exemplary configuration of a personal computer according to the general method of Example of the present invention and / or devices and / or systems may be implemented.
Detailed ways
[0038]
The exemplary embodiment of the present invention 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.
[0039]
Here, also be noted that, in order to avoid unnecessarily obscuring the details of the present invention, the drawings only shows a solution according to the present invention closely related to the device structure and / or processing steps, omitted Further details of the present invention has little relationship.
[0040]

[0041]
As described above, in the millimeter wave communication may use digital - analog antenna beamforming mixed structure. Of course, also possible to use a simple analog beamforming digital beam-forming or simple. Wherein the digital beam-forming may be implemented by digital pre-encoder, the encoded data via the parallel configuration of the K RF (Radio Frequency, RF) link connected to the antenna to achieve a specific direction of the beam propagation. Analog beamforming, also referred to as beam-steering antenna steering capability, i.e., the ability to transmit a beam in a specific direction. For example, the radio link connection and a plurality of phase shifters to the antenna using at least one radio frequency link is formed having directivity beam to analog beamforming scheme.
[0042]
Digital - analog hybrid beamforming arrangement, in conjunction with analog and digital beamforming beamforming. Figure 1 shows a digital - an example of analog hybrid beamforming antenna structure. Wherein, using an M × N Rectangular antenna array (Uniform Rectangular Array, URA), K is less than the number of RF chains antenna array of size M × N.
[0043]
Due to the presence of the analog angle inflexible beamforming, it is often employed to determine an initial access technique based on multi-beam scanning beam optimum beam pair. Figure 2 shows a prior art beam scanning scheme for a downlink. When the base station transmits downlink signals to determine the optimum transmit beam direction, in a time slot unit, the base station time-domain simulation beam traverses different codebook single narrow beam signal is transmitted to the user; Next, beam measurements and reporting a beam information to determine the optimal beam direction. Also, as shown, the uplink optimum beam 3 is determined by using time division strategy beam scanning beam traversing all be implemented, each user must separately through all the respective beams to obtain an optimal beam.
[0044]
As can be seen, more than the use of time-optimal strategy beam scanning beam, the time required to pay a high price. Further, when the link is down or blocking the beam, the above-described method requires again traverse beam by beam scanning, beam and measurement beam to obtain information reporting suboptimal beam, time cost greatly. For example, assume the base station side there are eight horizontal beams, three vertical beam may constitute 24 analog domain beamforming, the user has five horizontal beam, two vertical beams, can constitute 10 to the analog domain beams 240 when the total required gap transceiver to complete scanning beam.
[0045]
In view of this, it is desirable to provide a rapid technique to determine the optimum beam pairs. It should be understood that, although the above millimeter wave communication is described as an application context, however, an application of the present technology is not limited thereto, may be applied to other bands such as a microwave band or a millimeter wave is shorter than the wavelength band, more generally , the techniques of this application may be made suitably applied to any desired scene to determine the optimal beam wireless communication. Further, the techniques of this disclosure can be suitably applied to various antenna structure has beamforming capabilities.
[0046]
FIG 4 shows a functional block diagram of an electronic device of the present application for wireless communication 100 according to the embodiment shown in Figure 4, the electronic device 100 comprises: a selection unit 101, configured to, based on the wireless communication from the distal end receiving a first signal transmitted by the device, the beam selected from a predetermined group of one or more candidate beams; and a pickup unit 102, configured to obtain an optimal beam based on the one or more candidate beam pairs, optimal beam pair is such that the largest channel gain beam pair.
[0047]
Wherein the selection unit 101 and obtaining unit 102 may be implemented, for example, by one or more processing circuits, for example, the processing circuit may be implemented as a chip.
[0048]
In the present application, the wireless communication device broadly refers to apparatus for wireless communication function may be implemented, for example, both a transceiver for wireless communication, for example, the distal end of the wireless communication device is a wireless communication device with a local wireless communication device. For example, the wireless communication device may be a network control terminal, or a network node. Wherein the network control terminal refers to a communication system for communication settings active, control, resource allocation of physical communication functions, such as a cellular communication system a base station, C-RAN (Cloud-RAN / Centralized-RAN) the baseband devices at the cloud structure (cell concept may not be present), and the like, for example, any one BBU BBU pool communicating with each other at high speed C-RAN architecture. It refers to a network node in a communication system entity using communication resources to achieve its purpose of communication, such as various user devices (such as mobile terminals, intelligent vehicles, and other wearable devices having smart cellular communication capabilities) or the network infrastructure such as small cell base station Wait.
[0049]
Wherein, as the sender and receiver wireless communication devices may each have beamforming capability. It will be appreciated, in the case of a directional beam, need to match the direction of the antenna beam direction and the reception of the sender to obtain the maximum channel gain, wherein the antenna reception side corresponding to the direction of the beam, also known as beam to the recipient, and the sender selects the best beam and the beam receiver (actually antenna reception side) is referred optimum beam pair. Compared with other beams of the beam to be optimum to achieve the highest channel gain, so use of the beam to an optimal communication quality of communication can be improved.
[0050]
In the present embodiment, and a conventional manner using different beam scanning, the beam is first selection candidate by the selection unit 101 to narrow down the beam for optimal, thereby improving the efficiency of determining the optimum beam pair. Specifically, the selection unit 101 based on the selection of the first signal is received from the remote wireless communication device to the candidate beam. The first signal may be a signal omni signal, i.e. the signal energy is distributed uniformly in all directions, it may be a directional signal, i.e. the signal energy is concentrated in a certain direction signal. By receiving the first signal, you can generally determine which direction the distal end of the beam in the wireless communication device may communicate using a higher channel gain is obtained, and the beam in these directions as a candidate beams. Wherein the predetermined set of beams respectively corresponding to the predetermined beam direction of the antenna groups, for example, may be an analog or a portion of a beam codebook.
[0051]
Subsequently, the selected candidate beam is further for determining optimal beam pair. Since the number of candidates is smaller than the number of all possible beams of the beam, the beam thus only be determined based on the candidate for the optimal beam can accelerate and increase the speed determined by the accuracy of determination. Wherein the determination of the optimum beam may be performed by a local wireless communication device is located in the electronic device 100, may be performed by a remote wireless communications device, depending on the actual application and the manner of determining the optimum beam.
[0052]
The case where the determined optimum beam at the distal end of the wireless communication device, acquisition unit 102 acquires information on the optimum beam from the remote wireless communications device. In one example, the acquisition of the second signal is configured to utilize each candidate transmitted to the distal end of the beam forming unit of the wireless communication device 102, so that the remote radio communication devices to determine optimum beam based on the second signal. For example, the distal end of the wireless communication device are determined strongest beam energy corresponding to the second signal for each of a second signal, respectively, and by measuring the direction of this beam and a second beam close to the code of the strongest signal energy of these beams each candidate beam channel gain corresponding to the candidate beam composition, wherein the selecting a candidate channel gain the maximum beam of the beam as the optimal pair.
[0053]
For example, the selection unit 101 may select a candidate beam follows: a first signal based on the estimated DOA (Direction Of Arrival, DOA), to obtain a plurality of beams; and selecting the most highest energy beam in a direction from a predetermined group of beams close one or more beams as candidate beams.
[0054]
The first signal may be an omni-directional signal transmission between the wireless communication device to a full signal, schematically illustrated in FIG. 5, wherein the remote wireless communication device, for example, may be a base station, a local wireless communication devices such as user equipment (UE ). After performing DOA estimation selection unit 101, a plurality of beam direction can be obtained, and the energy of each beam, wherein the beam with the highest energy indicates the direction corresponding to the initial estimate of the transceiver antenna side matching. However, since the direction of the beam does not necessarily comprise, for example, it can be analog beamforming codebook selected in a direction close to the direction P of the beam as the candidate beam from a predetermined set of beams in a predetermined group of beams. P may be 1 or more, e.g., may be P 2. Figure 6 shows a schematic example of selecting two candidate beams, wherein the beam representative of the black beam with maximum energy, two gray representative of the selected candidate beams beam. Figure 7 shows a schematic diagram of a second signal transmitted by the selected candidate beam, to be noted that, while at the same time shows where two candidate beams, but the beam in the case where a plurality of candidates, the candidates are sequentially transmitted beam and not sent at the same time.
[0055]
P is larger, the higher the optimum beam for determining the time cost. This is because, the distal end of the wireless communication device after receiving the second signal, a candidate beam side remote radio communication apparatus based on the second signal (referred to as a second candidate beam, for example beam corresponding to each candidate second Q candidate beam) is selected, and the composition of the second beam signal candidate corresponding to the candidate beam and the selected second candidate beams, beams of all candidate measurements to obtain a time-division channel gain, the channel gain the highest candidate beam as for optimal beam right. In the case of each candidate corresponding to Q pieces of second beam candidate beams, the number of candidate beam is a P × Q, therefore, the larger the number of candidate beams and / or the second candidate beams, the more the number of candidate beam pairs large, the more time it takes.
[0056]
Figure 8 shows a schematic view of a remote wireless communication device selecting a second candidate beam is performed, wherein, similarly, the black represents a beam maximum energy beam, the beam will be mapped to the candidate codebook obtained beam, beam representative gray the second candidate selection beam. For example, remote wireless communications device can similarly be obtained a plurality of beam direction corresponding to the second local wireless signal transmitted by the communication device DOA estimation to obtain the maximum energy beam DOA estimation and selects the beam direction from the codebook beam direction corresponding to the closest candidate as the second beam.
[0057]
Figure 9 shows a remote wireless communication device performs time-division for the candidate beam measured to determine a schematic view of the optimum beam. Specifically, the local wireless communication device sharing a transmission candidate for each beam, a second candidate antenna remote wireless communications device with the corresponding beams respectively receive beam and to give to the candidate channel gain based on the measurement. After completion of all measurements, select the highest channel gain candidates as an optimum beam of a beam pair.
[0058]
Further, as shown in FIG. 10, the electronic device 100 may further comprise: a memory 103 configured to store more than DOA estimation result, for example, a beam direction of each energy in descending order by storing the obtained or the direction of the respective beams stored in association with the beam energy. In addition, the memory 103 may also store the measurement results for all candidate pairs of beams, for example, in descending order according to the channel gain for each of the candidate beam or beams of the respective candidate with a corresponding channel stored in association with the gain. Reference is beam switching These results may be used, for example, a beam quality of subsequent communications occur even decreased beam link interruption or blockage problems.
[0059]
In one example, the selection unit 101 can obtain a three-dimensional DOA estimates to the beam direction. DOA estimation in three-dimensional, for example, determine the azimuth and elevation beam to determine the direction of the beam. FIG 11 shows a schematic elevation and azimuth angles. The present embodiment also provides a way effective three-dimensional DOA estimation, this method is applicable to the digital - analog hybrid antenna structure.
[0060]
Specifically, the selection unit 101 is configured to: a plurality of antenna elements continuous in one dimension antenna array connected to the selected RF link to an antenna structure disposed on a first signal received by the applied antenna structure DOA estimation algorithm to obtain azimuth beam; and a plurality of discrete antenna elements on another dimension of the antenna array is connected to the selected RF link to an antenna structure disposed on a first signal received by the application of the antenna structure of arrival estimation algorithm the pitch angle of the beam is obtained.
[0061]
For example, the antenna structure comprising the antenna array of M × N as shown in FIG. 1 as an example, one row of a first time slot, the selection unit 101 selects an antenna array in K consecutive antennas ULA (Uniform Linear Array , ULA), connect the ULA into K RF link, an azimuth angle θ using the estimated DOA algorithm; in the second time slot, obtaining any one of the K consecutive antenna unit 102 selects M × N array of antenna configuration ULA, the ULA RF link connected to the K, using the estimated DOA algorithm pitch angle φ. Which may be used as at least one DOA DOA estimation algorithms to: MUSIC method, ESPRIT algorithm and Capon algorithm. Most accurate DOA estimation algorithm according to the present embodiment, a three-dimensional DOA estimation accuracy of the algorithm can be achieved prior ULA, and flexible and easy azimuth and elevation angle estimates. However, it should be understood that the determination unit 102 may be using an algorithm or other three-dimensional DOA estimation using two-dimensional DOA estimation algorithm, this is not limitative.
[0062]
In general, the local wireless communication device to communicate using an optimal beam, however, if the optimum beam occurs on the communication quality is degraded, the link is interrupted or blocked, the communication quality is degraded both may be discarded on a beam, and beam switching.
[0063]
12, the electronic device 100 may further comprises: a switching unit 104, when configured to drop to below a predetermined level of communication quality of the communication is switched to suboptimal beam pair. Further, although not shown in FIG. 12, FIG. 12 but may also include a storage unit 103.
[0064]
Wherein the sub-optimal candidate may be based on the beam of the second beam signal is determined on the distal end of the communication device in addition to the optimal beam External beam largest channel gain pair. In this case, the switching can very quickly, and no additional measured or calculated.
[0065]
In another example, the selection unit 101 selects from a predetermined set of beams with high energy beam of the second closest in the direction of one or more beams as beams suboptimal candidates, and the candidate by using the suboptimal second beamforming signal, so that the remote wireless communication device determines suboptimal beam pair. In other words, the candidate selection signal and transmitting a second beam of the second beam for a large energy, and the distal end of the communication device repeats the processing of the optimal beam selection for the second signal, but then the determined optimum beam for both sides, in fact, to send and receive suboptimal beam pairs.
[0066]
For example, the selection unit 101 can refer to the information stored in the storage unit 103 to select the beam, or information related to the corresponding energy of the beam can also be obtained from a remote wireless communications device.
[0067]
Furthermore, although not shown, the electronic device 100 according to the present disclosure may further comprise: a communication unit configured to communicate with a remote wireless communication device for exchanging various kinds of information. Here communication unit may include the antenna structure and associated hardware circuitry and / or software programs. For example, a communication unit to execute at least one of: receiving a first signal, transmitting, receiving, candidate beam receiver DOA estimation result of the measurement results of the second signal, and the like.
[0068]
In summary, to narrow the range of beam scanning beam 100 according to the present application selection candidate electronic apparatus by the embodiment, can efficiently, quickly and accurately determine the optimal beam pair and beam quality can be lowered in the event of link achieve rapid beam switching interruption or obstruction, in order to achieve fast, accurate, robust and flexible beam-management solutions.
[0069]

[0070]
In the present embodiment, the predetermined set of beams, for example, a portion of a beam codebook. Wherein beam codebooks may be a local wireless communication device and wireless communication device according to a distal end group, based on the packets carrying the selection candidate selection unit 101 to perform beam.
[0071]
For example, the selection unit 101 may select a candidate based on the beam reference signal received power of the first received signal (Reference Signal Receiving Power, RSRP), and the acquisition unit 102 based on RSRP to determine optimal beam.
[0072]
Specifically, the distal end of the wireless communication device to a local wireless communication device transmits a first signal, wherein a first set of beam signals transmitted using each of the remote radio communication device S in a beam set, i.e., the transmission times S, and a beam receiving each set of local radio communication apparatus selects a local wireless communication device L beams group, i.e. for each transmission beam received L times, therefore, the beams constituting the S × L number of beam pairs, a total of occupied S × L slots.
[0073]
The selection unit 101 from the group from each L beams L beams group consisting of, based on RSRP selecting possible candidate beams, the candidate beam refers to the antenna when the local wireless communication device receives a corresponding beam, such as selection beam as the candidate beam that obtained with the first signal transmission direction corresponding to the largest RSRP largest RSRP antenna beam signals received in a first configuration corresponding to the candidate beam pairs. RSRP acquisition unit 102 based on a result of the candidate beam pairs is determined whether their communication needs, if satisfied, then the candidate beam pairs is determined as an optimal beam pair. Otherwise, further division of the beam set and beam set local wireless communication device remote wireless communication device corresponding to each of the candidate beam to repeatedly find the optimal beam capable of communications needs in the sub-group division obtained.
[0074]
That is, the selection unit 102 selects the largest RSRP as a candidate of the beam to beam, beam to the candidate comprises a first signal beam corresponding to the candidate beam, and the acquisition unit 102 in the candidate beam pairs is determined that the communication needs of its optimum beam pairs.
[0075]
As an example, a first signal beam corresponding to the selected remote wireless communication device side of each beam set is classified in advance in an intermediate position of the beam, the beam selected candidate wireless communication apparatus according to the present divided beam is previously set at the intermediate position beam.
[0076]
For ease of understanding, the following base station and a UE application scenario is given as a specific example. Wherein the base station is assumed that there are 24 beams analog domain, the analog domain the user has 10 beams, the first beam by the beam information of the base station is divided into 4 groups (Z1, Z2, Z3, Z4), the angle is set close to the beam, the same , the user's beam divided into two groups (U1, U2). Then, select the base station each transmit beam in a reference signal to the user more intermediate values, it requires four time slots, each user receives a beam closest to the two intermediate values, requires 2 slots to constitute 4 × two beam pair need to occupy 4 × 2 slots. Next, the optimal pair (e.g., (Z2, U1)) as a candidate of the beam according to RSRP sorting information, and record measurements. At this time, the operation determines RSRP results for the candidate beam is able to meet the communication needs, and if so, aborts the candidate beam and used to communicate as an optimum beam pair, otherwise, continue as follows.
[0077]
Z2 group of base stations in six beams, the beam will be uniformly divided into two subgroups (Z21, Z22), were selected from among the most beam transmits a reference signal to the user, the user U1 of the same group is divided into two beams group (U11, U12), by using the two most middle beam reception, constituting group 2 × 2 beam pair, need to occupy 2 × 2 slots. Then, similarly using the obtained sort information RSRP beam pair candidate, and determines whether the communication needs, until it finds an optimal beam meets the condition of communication so far.
[0078]
In this example, the optimal beam local wireless communication device (e.g., UE) by using the obtained communication to the electronic device 100 may further include a switching unit 104, is configured as the communication quality falls below a predetermined level to switch communication suboptimal beam on which sub-optimal beam to beam for a candidate, in addition to optimal beam Foreign RSRP largest candidate beam pairs. For example, electronic device 100 may further include a memory 103 configured to store information RSRP candidate and the corresponding pair of beams.
[0079]
Thus, the beam quality is degraded when the communication link is interrupted or blocked, the information beam can quickly search the record information and the corresponding RSRP achieve fast switching. Further, although the above RSRP each search of the maximum beam of the beam as a candidate, but is not limited to this, and for example, RSRP exceeds a certain level as a candidate of the beam on the beam, and the acquisition unit 102 according to the candidate beam pairs the RSRP meets the communication needs and to determine the optimal beam pairs. In this case, the memory 103 may store more information on the candidate beam is conducive to more accurate switching.
[0080]
Packet in the example shown above is merely one example, can be flexibly set according to practical needs. Determining optimal beam mode of this embodiment as compared with the conventional beam scanning, can significantly reduce the time cost.
[0081]
Accordingly, the present embodiment further provides an electronic device for wireless communications, comprising: generating unit configured to generate a first signal is grouped according to a predetermined beam, a first signal is used by the remote wireless communication device based on which is the reference signal received power to determine the optimum beam. Wherein the generating means may be implemented, for example, by one or more processing circuits, for example, the processing circuit may be implemented as a chip.
[0082]
As described above, predetermined beams can be flexibly set according to the required packet.
[0083]
In summary, an electronic apparatus according to the present embodiment by a beam codebook grouped in advance, based on RSRP to determine an optimal beam, can effectively reduce the cost of time, quick, accurate, robust and flexible beam-management solutions.
[0084]

[0085]
FIG 13 shows a functional block diagram 200 according to an electronic apparatus for wireless communication according to another embodiment of the present application, as shown, the electronic device 13 includes a 200: generation unit 201, is configured to generate a wireless distally a first signal transmitted by the communication device; and a determination unit 202, configured to signal based on a second remote wireless communication device using the transmission beam in accordance with each candidate signal a first selected one or more candidate beams from predetermined beamforming or a group selected second candidate beams, beam pair to determine the optimum, the optimal beam comprises one pair of beams and a second one of the candidate candidate beams.
[0086]
Wherein the generating unit 201 and the determination unit 202 may be implemented, for example, by one or more processing circuits, for example, the processing circuit may be implemented as a chip.
[0087]
For example, the first signal may be a whole, the distal end of the wireless communication device to obtain one or more candidate beams based on the received signal to the first signal, wherein the candidate beam energy substantially at the distal end of the wireless communication device receives the strongest beam nearby. Then, using a remote wireless communication device, respectively, each candidate transmit a second signal beam. Determination unit 202 after receiving the second signal, similarly obtained the maximum energy beam direction, and select the beam direction approaching the second beam as the beam from the predetermined beam candidate set. In the above process with reference to the first embodiment has been FIGS. 5 to 8 has been described, the details thereof will not be repeated.
[0088]
In one example, the determination unit 202 is configured to: based on the second signal respectively DOA estimates to obtain the maximum energy beam, and selects the closest one maximum energy beam in a direction from a predetermined group of one or more beams beam as the second candidate beam; and respectively by each of the candidate beam configuration of each candidate corresponding to the candidate beam and a second beam candidate candidate maximum beam of the beam for beam measurement channel gains and selecting the measured as for optimal beam right.
[0089]
Wherein the determination unit 202 may be a three-dimensional DOA estimation. Specifically, the determination unit 202 is configured to: a plurality of antenna elements continuous in one dimension antenna array connected to the selected RF link antenna structure configured for receiving the second signal applied to the antenna structure by the arrival angle estimation algorithm to obtain azimuth beam; and a plurality of discrete antenna elements on another dimension of the antenna array is connected to the selected RF link antenna structure configured for receiving the second signal applied to the antenna structure by the arrival angle estimation algorithm the pitch angle of the beam is obtained.
[0090]
For example, at least one of the following arrival angle estimation algorithm: MUSIC method, ESPRIT algorithm and Capon algorithm.
[0091]
For detailed information about the three-dimensional DOA estimation algorithm can be found described in the first embodiment, it will not be repeated. It should be appreciated, the determination unit 202 may be using an algorithm or other three-dimensional DOA estimation using two-dimensional DOA estimation algorithm, this is not limitative.
[0092]
It will be illustrated by a specific example. In this particular example, wireless communication device 200 where the electronic apparatus is a base station, a user equipment UE device for remote wireless base station. The base station after sending a first signal, the UE obtaining a three-dimensional DOA estimation candidate beam P, and then transmits a second signal using time-sharing each of the candidate beam and beam information reports. DOA estimation at the base station receiving the second signal, if the closest Q are selected for each of the strongest beam of the second beam signal from the second candidate, the candidate P × Q constituting the combined beam. The following table gives an example in which, the UE has P = 2 candidate beams, p1 and p2 respectively, the base station has two candidates for the beams p1 (q11, q12), the base station 1 for candidate p2 beam Q21, the There are three candidate beam pairs, as shown in table G1 ~ G3.
[0093]
[Table 0001]
Candidate for beam The second candidate base station side beam 1 Second candidate base station side beam 2
UE-side candidate beam p1 G1 (p1, q11) G2(p1,q12)
UE-side candidate beam p2 G3 (p2, q21) no

[0094]
For example, in a first time slot, the UE transmits with a candidate p1 beam and a second signal beam angle reported information, the base station receiving q11 (q11 corresponding to the antenna pattern), to give the base station a first set of candidate channel beam according to the beam measuring G1 gain A.
[0095]
In the second slot, the UE is still transmitting a second signal beam with a candidate p1 beam angle and report information, the base station to switch to q12 (q12 corresponding antenna) received, the base station to obtain a second set of candidate channel beam according to the beam measuring G2 gain B.
[0096]
In the third slot, the UE transmits a second switch candidate p2 beam signal beam angle and report information, the base station to switch to q21 (q21 corresponding antenna) received, the base station to obtain a third set of candidate channel beam according to the beam measuring G3 C. gain
[0097]
Determination unit 102 compares the channel gain A, B and C of size, if B> A> C, G2 description of the beam to achieve maximum channel gain, select G2 (p1, q12) as the optimal beam pair.
[0098]
Further, as shown, the electronic device 200 may further include 14: memory 203, configured to store the result of the measurement beam. For example, the memory may store the candidate beam pairs with the corresponding channel gains. In the above example, the following information may be stored: (G1, A), (G2, B), (G3, C). This information can be used for beam switching is performed when the beam quality is degraded, the communication link interruption or blockage occurs.
[0099]
15, the electronic device 200 may further include a switching unit 204, typically, at the time of initial access, the wireless communication apparatus performs communication using the optimum beam switching unit 204 is configured as the communication quality is degraded to a predetermined level or less the communication handover to suboptimal beam pair.
[0100]
For example, the beam of suboptimal candidate beam pairs, in addition to an optimal beam External beam largest channel gain pair. In the above example, it may be suboptimal for beam G1.
[0101]
Furthermore, suboptimal beam pair can also be determined as follows: determination unit 202 based on the wireless communication device using a distal end of each of the third sub-optimal candidate signal transmitted beam suboptimal candidates beam according to one or more first selection signal, from predetermined beam selected from a group of one or more third candidate beams, beam pair to determine suboptimal, the beam including suboptimal candidates and one of the third beam, one beam suboptimal candidates.
[0102]
In other words, beam switching is to be performed, the wireless communication device from the distal end of the second largest energy beam selected from a plurality of first beam signals obtained, and selects the best beam and the second high energy beams from a predetermined group close one or more beams as beams suboptimal candidates, each candidate sub-optimal beam sequentially transmits a third signal to the local wireless communication device, the third communication device local wireless signal received DOA estimation is performed to obtain the strongest energy beam selecting a predetermined beam direction from the group closest to the strongest energy beam as a third candidate or a plurality of beams beam, beams and suboptimal candidates corresponding third beam constitute candidate candidate beam pairs. Local wireless communication device for each measuring beam to a candidate channel gain, the channel gain for the maximum beam as a candidate for suboptimal beam, and switching to the suboptimal beam pair.
[0103]
As described above, during initial access, candidate beams at P and Q have a second candidate beams for each candidate beams, the present disclosure optimum beam mode for determining the cost of 1 + P times DOA estimation and measurement beam P × Q times, much less than the cost of using the conventional beam scanning method. And, the cost of performing handover when the smaller, for example, need only look-up table or only P-1 times and DOA estimation (P-1) × Q times the measurement beam. Therefore, to achieve a fast, accurate, robust and flexible beam-management solutions.
[0104]
Furthermore, although not shown, the electronic device 200 may further include a communication unit configured to communicate with a remote wireless communication device for exchanging various kinds of information. Here communication unit may include the antenna structure and associated hardware circuitry and / or software programs. At least one of the communication unit in, for example, perform the following: transmitting a first signal receiving, the DOA estimation result received, transmitting a second candidate signal beam on the measurement results, and the like.
[0105]
For ease of understanding, FIG. 16 shows a schematic view of a beam information flow management program according to the present application. In FIG. 16, to the base station and the user equipment illustrated by way of example, it should be understood that information exchange body is not limited thereto but may be applicable to any wireless communication transceiver side has beamforming capabilities.
[0106]
This information flow is described below briefly with reference to FIG. 16. First, the base station sends a signal to the user equipment UE whole, UE receives the signal and performs DOA estimates to obtain a plurality of three-dimensional beams, for example, using the aforementioned methods or any other embodiments of methods of DOA estimation can be a three-dimensional embodiment, then, UE the results obtained and the most energetic beam, for example, DOA estimation and the corresponding relationship between the beam energy is stored in the memory. The UE beam codebook closest to the strongest beam energy beam as a candidate beam P, and the candidate division transmits a beam having a direction P of the second signal to the base station. The base station after receiving the second signal, and obtains a three-dimensional DOA estimation strongest energy beam, the energy in the beam closest to the selected codebook strongest beam beam beam Q as a candidate, which candidate beam P and Q constituting the candidate beam candidate beam pairs. Then, to the selected candidate of the beam to be measured. Specifically, UE sharing a candidate transmitted signal beam direction P of the beam and report information. The base station receives signals using time division candidate beam Q. Each of the candidate beam was measured, and the maximum channel gain for the beam as a candidate for the optimal beam of P × Q. In addition, the beam may also be a candidate for the result of the measurement is stored.
[0107]
Subsequently, the base station and the user equipment to communicate using the optimum beam. If the beam quality is degraded, a link interruption or blockage occurs during communication, the beam switching may be employed in one of two ways, are shown as (1) and (2). In (1), the DOA estimation result obtained UE refers to the stored second strongest beam, and determining a candidate beam P, and selection of an optimal beam Q candidate beam was repeated, this time at the determined optimum beam of substantially suboptimal beam pair. In (2), the base station of the measurement result is selected by referring to the stored beam suboptimal candidates for communication beam.
[0108]
It should be understood that this information is merely an exemplary process, wherein the respective steps can be suitably modified, omitted or added.
[0109]

[0110]
Process describes an electronic device in the embodiments in the above, it is clear also disclosed some processes or methods. Hereinafter, a summary of these methods is given in the case of some details will not be repeated has been discussed above, it should be noted that although these methods are disclosed in the procedure described for the electronic device, but these methods are not necessarily employed as described It is not necessarily performed by those components or those components. For example, the embodiment of the electronic device may be partially or fully implemented using hardware and / or firmware, and the methods discussed below may be implemented entirely by a computer-executable program, although these hardware electronic devices may also be employed and / or firmware.
[0111]
FIG 17 shows a flowchart of a method for wireless communication according to an embodiment of the application, comprising: receiving a first signal based on transmitted from the remote wireless communication device, selecting from a predetermined group of beams or a plurality of candidate beams (S11); and based on one or more candidate beams to obtain an optimal beam, which beam pair is optimal so that the channel gain for the maximum beam (S12).
[0112]
In one example, in step S11: based on a first signal arrival angle estimation, to obtain a plurality of beams; and selecting from a predetermined set of beams as a beam with maximum energy in the direction of the closest one or more beams candidate beams. Furthermore, although not shown, the above method may further comprise the step of arrival angle estimation result of storage.
[0113]
In step S12, each candidate using a signal beam to generate a second remote radio communication devices to transmit, to a wireless communication device such that the distal end of the optimum beam is determined based on the second signal.
[0114]
For example, in step S11 arrival angle estimation can be performed: a plurality of discrete antenna elements on a selected dimension of the antenna array is connected to a radio frequency link to configure the antenna structure, the first signal by applying the received reaches the antenna structure estimation algorithm to obtain the azimuth angle of the beam; and a plurality of discrete antenna elements on another dimension of the antenna array is connected to the selected RF link to an antenna structure disposed on a first signal received by the applied antenna structure DOA estimation algorithm to obtain the pitch angle of the beam. Which may be used in at least one of the following arrival angle estimation algorithm: MUSIC method, ESPRIT algorithm and Capon algorithm.
[0115]
Further, as shown in phantom in FIG. 17, the method further comprises the step of: using said optimal beam performs communication (S13); and switching the communication when the communication quality is degraded to a predetermined level of the beam to the suboptimal (S14).
[0116]
For example, the beam of suboptimal remote wireless communication device to a second signal based on the determined candidate beam, in addition to an optimal beam External beam largest channel gain pair.
[0117]
Furthermore, suboptimal beam pair can also be determined as follows: selecting the second high energy beam in a direction closest to the one or more beams from a predetermined set of beams as suboptimal candidates beams and suboptimal use of the candidate beamforming a second signal, such that the distal end of the wireless communication device determines suboptimal beam pair.
[0118]
In another example, the steps S11 and S12, respectively, to select a candidate of the optimum beam and the beam is determined based on the reference signal received power of the received first signal.
[0119]
For example, the maximum power of the received reference signal is selected as a candidate of the beam on the beam, wherein the beam candidates including the candidate signal corresponding to a first beam and a beam. In this case, when the communication quality falls below a predetermined level to switch communication to suboptimal beam, wherein the beam of suboptimal candidate optimal beam in addition to the beam reference signal received power outside the largest candidate beam pairs.
[0120]
Illustratively, a first signal beam corresponding to selected remote wireless communication device side of each beam set is classified in advance in an intermediate position of the beam, the beam is selected from the candidate beam set of the present wireless communication device is previously divided in the intermediate position beam.
[0121]
FIG 18 shows a flowchart of a method for wireless communication according to another embodiment of the present application, comprising: generating a first signal (S21) transmitted to the remote wireless communication device; and a remote wireless communications device based on the use of according to a second signal beams each candidate one or more candidate beams of the first signal in the selected transmission, selecting one or more candidate beams from a second predetermined group of beams, to determine that the largest channel gain optimal beam on (S22), the optimum beam comprises one pair of beams and a second one of the candidate candidate beams.
[0122]
For example, at step S22: arrival angle estimation performed in order to obtain the maximum beam energy, and beam selected from a predetermined group as a beam with maximum energy in the direction of the closest one or more of the second beam based on the second signal respectively candidate beam; and respectively by each of the candidate beam configuration of each candidate corresponding to the candidate beam and a second beam to beam candidate channel gain for beam measurements, and selecting the maximum measured as the optimal candidate beam pairs beam pairs. Furthermore, although not shown, the method may further comprise the step of storing the result of the measurement beam.
[0123]
Further, as shown in phantom in FIG. 18, the above-described method may further comprise: using the optimal beam performs communication (S23); and when the communication quality falls below a predetermined level to switch communication suboptimal beam pair (S24) .
[0124]
For example, the beam of suboptimal candidate beam pairs, in addition to an optimal beam External beam largest channel gain pair.
[0125]
Furthermore, suboptimal beam pair can also be determined as follows: each time the third signal using the optimal transmission beam candidates suboptimal candidates beam according to one of the first signal based on the selected one or more remote wireless communications device, from the predetermined selecting a set of beam of a third candidate or more beams to identify suboptimal beam pair, comprising a pair of beams and suboptimal one third candidate beam one beam suboptimal candidates.
[0126]
In step S22 arrival angle estimation can be performed as follows: a plurality of discrete antenna elements on a selected dimension of the antenna array is connected to a radio frequency link to configure the antenna structure, the signal applied to the second received via the antenna structure of arrival estimation algorithm to obtain the azimuth beam; and a plurality of discrete antenna elements on another dimension of the antenna array is connected to the selected RF link antenna structure configured for receiving the second signal applied to the antenna structure by the arrival angle estimation algorithm to obtain the pitch angle of the beam. Which may be used in at least one of the following arrival angle estimation algorithm: MUSIC method, ESPRIT algorithm and Capon algorithm.
[0127]
Note that, each of the above methods may be used singly or in combination, the details of the first to third embodiments have been described in detail and will not be repeated.
[0128]

[0129]
The techniques of this disclosure can be applied to various products. The base station mentioned above may be implemented as any type of evolved Node B (eNB), such as a macro eNB, and a small eNB. Small eNB may cover less than a macro cell eNB cell, such as a pico eNB, the eNB and the micro family (femto) eNB. Alternatively, the base station may be implemented as any other type of base station, such as base transceiver stations and NodeB (BTS). The base station may include: a body configured to control wireless communication (also referred to as base station apparatus); and one or more remote radio heads disposed at different places of the main body (RRH). Further, various types of user equipment will be described below can be by temporarily or semi-persistent perform work station functions as a base station.
[0130]
[Application Example of the base station on]
[0131]
(First Application Example)
[0132]
FIG 19 is a block diagram of a first example of a schematic configuration of the eNB art shows the present disclosure may be applied. eNB 800 includes one or more antennas 810 and a base station apparatus 820. The base station apparatus 820, and each antenna 810 may be connected to each other via a RF cable.
[0133]
Each antenna 810 includes 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 for the base station apparatus 820 transmit and receive wireless signals. As shown in FIG. 19, eNB 800 may comprise a plurality of antennas 810. For example, a plurality of the plurality of antennas 810 may be used in a frequency band compatible with the eNB 800. Although FIG. 19 shows an example in which the eNB 800 includes a plurality of antennas 810, the eNB 800 may also comprise a single antenna 810.
[0134]
The base station apparatus 820 includes a controller 821, a memory 822, a network interface 823 and a wireless communication interface 825.
[0135]
The controller 821 may, for example, CPU or DSP, and operation of the various higher layer 820 of the base station apparatus. For example, the controller 821 generates a data packet according to the data signal by the wireless communication interface 825 in the process, and to transmit the generated packet via the network interface 823. The controller 821 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 821 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. Memory 822 includes RAM and ROM, and various types of control programs and data (such as terminal list, the transmission power data and schedule data) executed by the controller 821.
[0136]
The network interface 823 for base station apparatus 820 is connected to a core network communications interface 824. The controller 821 may communicate with the core network node or another eNB via the network interface 823. In this case, eNB 800 and eNB or other core network node may be connected to each other through the logical interface (such as the S1 interface and the X2 interface). The network interface 823 may also be a wired communication interface or a wireless communication interface for the wireless backhaul. If the network interface 823 is a wireless communication interface, compared with the frequency band used by the wireless communication interface 825, network interface 823 can use a higher frequency band for radio communication.
[0137]
The wireless communication interface 825 supports any cellular communication scheme (such as Long Term Evolution (LTE) and LTE- Advanced), via the antenna 810 and provided to a terminal located in the cell eNB 800 of the wireless connection. The wireless communication interface 825 may generally include a processor 826 and an RF circuit such as a baseband (BB) 827. BB processor 826 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 821, BB processor 826 may have a part or all of the logic functions. BB processor 826 may be a memory storing a communication control program, or a module configured to execute a program comprising a processor and associated circuitry. Update to the functional changes in BB processor 826. The module may be inserted into the slot of the base station apparatus 820 or card insert. Alternatively, the module may be a chip on a card or blade is mounted. Meanwhile, RF circuitry 827 may comprise, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 810.
[0138]
19, a wireless communication interface 825 may include a plurality of processors 826 BB. For example, the BB processor 826 may be compatible with a plurality of the eNB 800 uses a plurality of frequency bands. 19, a wireless communication interface 825 may include a plurality of RF circuits 827. For example, a plurality of RF circuitry 827 may be compatible with a plurality of antenna elements. Although FIG. 19 shows an example in which a plurality of wireless communication interface 825 includes a plurality of BB processor 826 and RF circuits 827 example, the wireless communication interface 825 may also include a single BB processor 826 or a single RF circuit 827.
[0139]
eNB 800, the communication unit shown in FIG. 19 may be implemented by a wireless communication interface 825. At least part of the function may be implemented by the controller 821. Generating means e.g., controller 821 in FIG. 13 may be performed by 201, the determining function unit 202 performs optimum beam and generating a first signal pair is determined, and a switching unit 204 by performing the functions shown in FIG. 15 performing beam switching.
[0140]
(Second Application Example)
[0141]
FIG 20 is a block diagram of the second example of a schematic configuration of the eNB art shows the present disclosure may be applied. eNB 830 includes one or more antennas 840, 850 and the base station apparatus RRH 860. Each RRH 860 and antenna 840 may be connected to each other via an RF cable. RRH 860 and base station apparatus 850 may be connected to each other via high-speed line such as a fiber optic cable.
[0142]
Each antenna 840 includes a single or a plurality of antenna elements (such as including a plurality of antennas in MIMO antenna elements) and for RRH 860 transmit and receive wireless signals. As illustrated, eNB 20 830 840 may comprise a plurality of antennas. For example, a plurality of antennas 840 may be compatible with a plurality of frequency bands used by eNB 830. Although FIG. 20 shows eNB 830 comprises a plurality of antennas 840 examples, the eNB 830 may also comprise a single antenna 840.
[0143]
The base station apparatus 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855 and the connection interface 857. Controller 851, the controller 821 is described a network interface 852 and memory 853 described with reference to FIG. 20, the same memory 822 and a network interface 823.
[0144]
The wireless communication interface 855 supports any cellular communication scheme (such as LTE and LTE- Advanced), and provided to the wireless communication terminal and the RRH 860 positioned corresponding to the sector via the RRH 860 and the antenna 840. The wireless communication interface 855 may generally include a processor 856, for example, BB. In addition to the BB processor 856 is connected to the RRH RF circuitry 864,860 is connected via an interface 857, the same processor BB BB processor 856 described with reference to Fig 20,826. 20, the wireless communication interface 855 may include a plurality of processors 856 BB. For example, the processor 856 may be compatible with a plurality of BB eNB 830 using a plurality of frequency bands. Although FIG. 20 shows an example of a wireless communication interface 855 includes a plurality of BB processor 856, the wireless communication interface 855 may include a single processor 856 BB.
[0145]
Interface 857 is an interface for connecting the base station apparatus 850 (wireless communication interface 855) connected to the RRH 860. Interface 857 may also be connected to the base station apparatus 850 (wireless communication interface 855) connected to the high-speed line RRH 860 in the communication module.
[0146]
RRH 860 comprises a connection interface 861 and a wireless communication interface 863.
[0147]
An interface 861 for connecting the RRH 860 (wireless communication interface 863) connected to the base station apparatus 850 interface. Interface 861 may also be connected to the high-speed lines in the communication module.
[0148]
The wireless communication interface 863 to transmit and receive wireless signals via the antenna 840. The wireless communication interface 863 may generally comprise, for example, RF circuit 864. RF circuit 864 may comprise, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 840. 20, the wireless communication interface 863 may include a plurality of RF circuits 864. For example, a plurality of RF circuitry 864 may support a plurality of antenna elements. Although FIG. 20 shows an example of a wireless communication interface 863 includes a plurality of RF circuits 864, the wireless communication interface 863 may comprise a single RF circuit 864.
[0149]
In the eNB 830 illustrated in FIG. 20, the communication unit may be implemented by a wireless communication interface 855 and / or wireless communication interface 863. At least part of functions may also be realized the controller 851. Generating means e.g., controller 851 in FIG. 13 may be performed by 201, the determining function unit 202 performs optimum beam and generating a first signal pair is determined, and a switching unit 204 by performing the functions shown in FIG. 15 performing beam switching.
[0150]
[Application Example of the user equipment]
[0151]
(First Application Example)
[0152]
FIG 21 is a block diagram illustrating an example of techniques of this disclosure may be applied smartphone schematic configuration 900. A smart phone 900 includes a processor 901, memory 902, storage device 903, an external connection interface 904, the image pickup device 906, a sensor 907, a microphone 908, an input device 909, display device 910, a speaker 911, a wireless communication interface 912, one or more antenna switch 915, one or more antennas 916, bus 917, battery 918 and the auxiliary controller 919.
[0153]
The processor 901 may, for example, (SoC), or on-chip CPU, and controls the smartphone application layer 900 and additional layer features. Memory 902 includes RAM and ROM, and stores data and programs executed by the processor 901. Memory device 903 may include a storage medium, such as a semiconductor memory and a hard disk. Interface 904 for external connection to an external device (such as a memory card, and a universal serial bus (USB) devices) connected to the interface 900 of the smart phone.
[0154]
The imaging apparatus 906 includes an image sensor (such as a charge coupled device (CCD) and complementary metal oxide semiconductor (CMOS)), and generates a captured image. Sensor 907 may include a set of sensors, such as a measuring sensor, a gyro sensor, a geomagnetic sensor and an acceleration sensor. 908 microphone input to the smart phone 900 converts the sound into an audio signal. The input device 909 includes, for example, it is configured to detect a touch on the screen of the touch sensor device 910, a keypad, a keyboard, buttons or switches displayed, and receives operation input from a user or information. The display device 910 includes a screen (such as a liquid crystal display (LCD) and organic light emitting diode (OLED) display), and displays the output image 900 is a smart phone. 911 converts the audio signal from the output of the 900 smart phone speaker sound.
[0155]
The wireless communication interface 912 supports any cellular communication scheme (such as LTE and LTE- Advanced), and performs wireless communication. The wireless communication interface 912 may comprise, for example, generally BB processor 913 and an RF circuit 914. BB processor 913 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 914 may comprise, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 916. The wireless communication interface 912 can be integrated for the BB processor 913 and an RF circuit module 914 of one chip. As shown, the wireless communication interface 912 may include a plurality of BB processor 913 and a plurality of RF circuits 91421. Although FIG. 21 shows an example in which a plurality of wireless communication interface 912 includes a plurality of BB processor 913 and RF circuit 914 example, the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914.
[0156]
Further, in addition to a cellular communication scheme, a wireless communication interface 912 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, the wireless communication interface 912 may include a BB processor 913 for each wireless communication scheme and the RF circuit 914.
[0157]
Each of the circuits comprises a plurality (e.g. a circuit for different wireless communication schemes) in a wireless communication interface 912 switches the connection destination of the antenna 916 between the antenna switch 915.
[0158]
Each antenna 916 includes a single or a plurality of antenna elements (such as including a plurality of antenna elements in MIMO antenna), and a wireless communication interface 912 for transmitting and receiving wireless signals. As shown, the smart phone 90 021 916 may include multiple antennas. Although FIG. 21 shows an example in which a smart phone 900 includes a plurality of antennas 916, the smartphone 900 may also include a single antenna 916.
[0159]
In addition, the smart phone 900 may include an antenna for each wireless communication scheme 916. In this case, the antenna switch 915 may be omitted from the configuration of the smart phone 900.
[0160]
917 processor bus 901, memory 902, storage device 903, an external connection interface 904, the image pickup device 906, a sensor 907, a microphone 908, an input device 909, display device 910, a speaker 911, a wireless communication interface 912 and the auxiliary controller 919 to each other connection. Smartphone battery blocks 900 each shown in FIG. 21 918 over line to provide power, in FIG feeders are partially shown as a dashed line. Auxiliary controller 919 operates the smartphone 900 is the minimum necessary functions in the sleep mode.
[0161]
In the smart phone 900 shown in FIG. 21, the communication unit may be implemented by a wireless communication interface 912. At least part of the function may be implemented by the processor 919 or secondary controller 901. For example, processor 901 or 101 and the auxiliary controller 919 may acquisition function unit 102 via the selection unit shown in FIG. 4 is performed to achieve an optimal candidate beam selection and acquisition beam pair, and a switch 12 as shown by performing function unit 104 to achieve the handover beam.
[0162]
(Second Application Example)
[0163]
FIG 22 is a schematic block diagram of an exemplary configuration 920 of the car navigation device art shows the present disclosure may be applied. Car navigation device 920 includes a processor 921, a memory 922, a global positioning system (GPS) module 924, a sensor 925, a data interface 926, content player 927, a storage medium interface 928, an input device 929, display device 930, a speaker 931, a wireless a communication interface 933, an antenna switch 936 or more, one or more antennas 937 and a battery 938.
[0164]
The processor 921 may, for example, a CPU or SoC, and controls the car navigation device 920 and additional navigation functions. Memory 922 includes RAM and ROM, and stores data and programs executed by the processor 921.
[0165]
GPS module 924 using a GPS signal received from a GPS satellite to measure the position (such as latitude, longitude, and altitude) of the car navigation device 920. Sensor 925 may include a set of sensors such as a gyro sensor, a geomagnetic sensor and an air pressure sensor. Via a data interface 926 is connected to a terminal (not shown), for example, in-vehicle network 941, and acquires the data (such as vehicle speed data) generated by the vehicle.
[0166]
Content player 927 to reproduce the content (such as CD and DVD) are stored in the storage medium, the storage medium is inserted into the storage medium interface 928. The input device 929 includes, for example, it is configured to detect a touch on the screen of the touch sensor device 930, display button or switch, and receives operation input from a user or information. The display device 930 includes a screen such as an LCD or OLED display, and displays a content image or reproducing the navigation function. Speaker 931 output sound navigation or reproduction of content.
[0167]
The wireless communication interface 933 supports any cellular communication scheme (such as LTE and LTE- Advanced), and performs wireless communication. The wireless communication interface 933 may comprise, for example, generally BB processor 934 and an RF circuit 935. BB processor 934 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 935 may comprise, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 937. The wireless communication interface 933 may also be integrated for the BB processor 934 and an RF circuit module 935 of one chip. As shown in FIG 22, a wireless communication interface 933 may include a plurality of processors 934 BB 935 and a plurality of RF circuits. Although FIG. 22 shows a state where a wireless communication interface 933 includes a plurality of BB exemplary processors 934 and 935 of the plurality of RF circuits, the wireless communication interface 933 may include a single BB processor 934 or a single RF circuit 935.
[0168]
Further, in addition to a cellular communication scheme, a wireless communication interface 933 may support additional types of wireless communication scheme, such as a short-distance wireless communication scheme, a near field communication scheme and the wireless LAN scheme. In this case, for each wireless communication scheme, a wireless communication interface 933 may include a processor 934 and an RF circuit BB 935.
[0169]
Each of the plurality of circuits comprises a wireless communication interface 933 (such as a different circuit for a wireless communication scheme) switches the connection destination of the antenna 937 between the antenna switch 936.
[0170]
Each of the antenna 937 includes a single or a plurality of antenna elements (such as including a plurality of antenna elements in MIMO antenna), and a wireless communication interface 933 for transmitting and receiving wireless signals. 22, car navigation device 920 may include multiple antennas 937. Although FIG. 22 shows a state where the car navigation apparatus 920 includes a plurality of exemplary antenna 937, car navigation device 920, but may also comprise a single antenna 937.
[0171]
Further, the car navigation device 920 may include an antenna for each radio communication scheme 937. In this case, the antenna switch 936 may be omitted from the configuration of the car navigation device 920.
[0172]
Each of the battery blocks 938 in the car navigation apparatus shown in FIG. 22 via the feed line 920 to provide power feeder in the drawing is partially shown as a dashed line. Cumulative power from the battery 938 provided by the vehicle.
[0173]
In the car navigation apparatus 920 shown in FIG. 22, the communication unit may be implemented by a wireless communication interface 933. At least part of the function may be implemented by the processor 921. For example, processor 101 and 921 may acquisition function unit 102 via the selection unit shown in FIG performed to achieve an optimal candidate beam selection and acquisition beam pair, and a function performed by the switching unit 104 shown in FIG. 12 to FIG. achieve beam switching.
[0174]
The techniques of this disclosure may also be implemented as a car navigation device 920 includes a vehicle network module 941 and a vehicle 942 in the vehicle system or a plurality of blocks (or vehicle) 940. Vehicle module 942 to generate vehicle data (such as vehicle speed, engine speed, and failure information), and outputs the generated data to the vehicle network 941.
[0175]
Above with reference to specific embodiments describe the basic principles of the invention, however, to be noted that, to those skilled in the art can understand that all or any of the steps or components of the method and apparatus of the present invention may be any computing device ( includes a processor, a storage medium etc.) or a network computing device, hardware, firmware, software, or a combination thereof to achieve, as one skilled in the art using the basic circuit design in the case of reading the description of the present invention basic programming skills or knowledge will be able to achieve.
[0176]
Further, the present invention further provides a storing instruction codes are machine readable program product. When the instruction code read and executed by a machine, perform the method according to embodiments of the present invention as described above.
[0177]
Accordingly, program product, for bearing the instruction codes are stored in a machine-readable storage medium is also included in the present invention is disclosed. The storage medium includes, but not limited to, floppy diskettes, optical disks, magneto-optical disk, memory card, memory stick and the like.
[0178]
In the case where the present invention is implemented by firmware or software, a program constituting the software is installed to a computer (e.g. a general purpose computer as shown in FIG. 23 2300) having a dedicated hardware configuration or a network from a storage medium, various programs, which is installed in the computer when you can perform a variety of functions.
[0179]
In Figure 23, a central processing unit (CPU) 2301 executes various processing in accordance with a program read only memory (ROM) 2302 or a program stored in the storage section 2303 to a random access memory 2308 is loaded from the (RAM). In the RAM 2303, it is also necessary when the CPU 2301 stores data required for performing various processes. CPU 2301, ROM 2302 and RAM 2303 are connected to one another via a bus 2304. Input / output interface 2305 is also connected to the bus 2304.
[0180]
The following components are connected to the input / output interface 2305: an input section 2306 (including a keyboard, a mouse, etc.), an output portion 2307 (including a display, such as a cathode ray tube (CRT), liquid crystal display (LCD) and the like, and a speaker, etc.), storage section 2308 (including a hard disk), a communication section 2309 (including a network interface card such as a LAN card, modem, etc.). Via the network communication section 2309 performs a communication process such as the Internet. A drive 2310 is also connected to the input / output interface 2305. A removable magnetic disk 2311 for example, an optical disk, a magneto-optical disk, a semiconductor memory media, etc., is mounted on the drive 2310, so that a computer program read therefrom is installed into the storage section 2308 as required.
[0181]
In the case where the foregoing series of processes by software, such as the Internet or a storage medium such as the removable medium 2311 from a network installation program constituting the software.
[0182]
Those skilled in the art will appreciate, this storage medium is not limited as shown in FIG. 23 where the program is stored, distributed separately from the device to provide a program to the user removable medium 2311. Examples of the removable medium 2311 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 2302, a storage section 2308 comprising a hard disk, etc., which the program is recorded and which is distributed to a user equipment together.
[0183]
Also be noted that, in the devices, methods and systems of the present invention, the respective components or steps can be decomposed and / or recombined. These decomposition and / or recombination of the present invention should be considered equivalents. Further, the above-described series of processing steps can naturally be performed chronologically in order of description but need not necessarily be performed chronologically. Some steps may be performed in parallel or independently of one another.
[0184]
Finally, it should be noted that the terms "comprises", "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, article, or apparatus not include only those elements but also includes other elements not explicitly listed, or further includes elements of the process, method, article or device inherent. Further, without more constraints, by the wording "include a ......" defined does not exclude the existence of additional identical elements in the element comprising a process, method, article, or apparatus.
[0185]
While the above embodiments are described in detail in conjunction with the accompanying drawings embodiments of the present invention, it should be understood that the embodiments described above are merely illustrative of the invention, but not limit the present invention. Those skilled in the art, various modifications and changes may be made to the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention is defined only by the claims and the equivalents of the appended.

Claims

[Claim 1]An electronic device for wireless communications, comprising: a processing circuit configured to: receive a first signal based on transmitted from the remote wireless communication device, selecting one or more candidate beam from the predetermined beam group; and to obtain the optimal beam based on the one or more candidate beams, the beam to be such that the optimal channel gain maximum beam pair.
[Claim 2]
The electronic apparatus according to claim 1, wherein the processing circuitry is configured to use the second signal to generate each of the candidate beam is transmitted to the remote wireless communication device, such that the remote wireless communication device based on the said second signal to determine an optimal beam pair.
[Claim 3]
The electronic apparatus according to claim 1, wherein the processing circuitry is configured to select a candidate for the received beam reference signal based on the received power of the first signal and the determination of the optimum beam.
[Claim 4]
The electronic apparatus according to claim 2, wherein the processing circuitry is configured to: for arrival angle estimation based on the first signal to obtain a plurality of beams; and selecting said predetermined set of beams of energy from the maximum beam in the direction of the nearest one or more beams as the candidate beam.
[Claim 5]
The electronic apparatus according to claim 4, wherein the processing circuitry is configured to: a plurality of antenna elements continuous in one dimension antenna array connected to the selected RF link to configure the antenna structure, the antenna structure by receiving a first signal applied to DOA estimation algorithm to obtain the azimuth beam; and a plurality of discrete antenna elements on another dimension of the antenna array is connected to the selected RF link to configure the antenna structure, the antenna structure by receiving a first signal applied to DOA estimation algorithm to obtain the pitch angle of the beam.
[Claim 6]
The electronic apparatus according to claim 2, wherein the electronic apparatus is located using the wireless communication device for communicating an optimal beam, the processing circuit is further configured to communicate when communication quality is degraded to a predetermined level or less switch to suboptimal beam pair.
[Claim 7]
The electronic apparatus according to claim 6, wherein said beam to said distal end of sub-optimal wireless communication device based on the candidate of the second signal beam the determined optimum beam outside the maximum channel gain in addition to the beam pairs Correct.
[Claim 8]
The electronic apparatus according to claim 6, wherein the processing circuitry is configured to select the second high energy beam in a direction closest to the one or more beams from said predetermined set of beams as suboptimal candidates beams and suboptimal use of the candidate signal to generate a second beam, such that the distal end of the wireless communication device is determined to suboptimal beam.
[Claim 9]
The electronic apparatus according to claim 3, wherein the processing circuitry is configured to select the reference signal received power as a candidate for the maximum beam of the beam, wherein the beam of the candidate beam and said first candidate comprising corresponding to the signal beam.
[Claim 10]
The electronic apparatus according to claim 9, wherein the wireless communication device and the electronic device is located remote wireless communication device using the optimal beam for communication, and the processing circuit is further configured to communicate when the quality falls below a predetermined level to switch communication to suboptimal beam, wherein the beam of suboptimal candidate beam pairs other than said optimum beam in the external reference signal received power of the largest candidate beam pairs.
[Claim 11]
The electronic apparatus according to claim 3, wherein said first signal beam corresponding to said selected remote wireless communication device a predetermined side of the divided beams each beam set at the intermediate position, the selected candidate beam beam is located in this intermediate position the wireless communication device is previously divided beam group.
[Claim 12]
An electronic device for wireless communications, comprising: a processing circuit configured to: generate a first signal to be transmitted to a remote wireless communication device; and based on the use of remote wireless communication device according to the first selection signal one or more candidate beams each of a second signal beam transmitted by the candidate, second candidate selecting one or more beams from a predetermined group of beams, such that the channel gain to determine the optimal maximum beam pair, the optimum one of the candidates for the beam comprises one beam and the second beam candidate.
[Claim 13]
The electronic apparatus according to claim 12, wherein the processing circuitry is configured to: based on the second signal respectively, the angle of arrival estimates to obtain the maximum beam energy, and the energy is selected from the group consisting of said predetermined beam the maximum beam in a direction closest to the one or more candidate beam as the second beam; and a candidate beam are constituted by each of each candidate corresponding to the candidate beam and a second beam of candidate beam performing beam measurements, and selecting the measured channel gain to the maximum beam as a candidate of the optimal beam pair.
[Claim 14]
The electronic apparatus according to claim 13, wherein said wireless communication device and the electronic device is located remote wireless communication device using the optimal beam for communication, the processing circuit is configured to decrease the communication quality when the predetermined degree will be switched to the communication sub-optimal beam pair.
[Claim 15]
The electronic apparatus according to claim 14, wherein the beam of said sub-optimal candidate beam pairs other than said optimum beam in the external channel gain maximum beam pair.
[Claim 16]
The electronic apparatus according to claim 14, wherein the processing circuitry is configured for each candidate suboptimal suboptimal beam based on the use of remote wireless communication device according to one or more first selection signal the third beam transmitted signal candidate, the third candidate selecting one or more beams from a predetermined group of said beams in order to determine the suboptimal beam, the beam including suboptimal one of said beams and suboptimal candidate one of the three candidate beams.
[Claim 17]
The electronic apparatus according to claim 13, wherein the processing circuitry is configured to: a plurality of antenna elements continuous in one dimension antenna array connected to the selected RF link to configure the antenna structure, the antenna structure by the received signal is applied to a second arrival angle estimation algorithm to obtain the azimuth beam; and a plurality of discrete antenna elements on another dimension of the antenna array is connected to the selected RF link to configure the antenna structure, by the the structure of the receiving antenna signal applied to the second DOA estimation algorithm to obtain the pitch angle of the beam.
[Claim 18]
A method for wireless communication, comprising: receiving a first signal based on transmitted from the remote wireless communication device, selecting one or more candidate beam from the predetermined beam group; and based on the one or more candidate optimal beam acquisition beam pair, which pair is optimal beam such that the largest channel gain beam pair.
[Claim 19]
A method for wireless communication, comprising: generating a first signal to be transmitted to a remote wireless communication device; and based on the use of remote wireless communication device in accordance with one or more candidate beams of the first signal in the selected a second signal beam transmitted by each candidate, second candidate selecting one or more beams from a predetermined group of beams, so that the channel to determine an optimal beam of maximum gain, the optimal beam comprises one pair of beams and the candidate one second candidate beams.