FIELD
[0001]
The present invention relates to a method and apparatus for suppressing interference in a dynamic spectrum access system, and more particularly, to an interference suppression device can distinguish between secondary dynamic spectrum access priority system, method and apparatus.
Background technique
[0002]
With the rapid development of information technology and multi-service wireless networks, the demand for wireless broadband services continues to increase, the spectrum of this valuable non-renewable resources are increasingly in short supply. However, the existing fixed spectrum allocation policy has led to a number of spectrum assigned to authorized users in certain period of time but in an idle state, the lower spectrum efficiency, there is a large spectrum of waste. Emergence of cognitive radio (CR) technology to improve the spectrum efficiency, ease the shortage of spectrum resources, and thus become the research focus in the field of wireless communications.
[0003]
Premise equipment using cognitive radio technology (will be referred to herein as "second apparatus") does not affect the authorized user equipment (referred to herein as "master") of the normal communication, the user equipment access authorization opportunistic legitimate band, dynamic spectrum access (DSA), resulting in improved spectrum utilization.
[0004]
Although the introduction of cognitive radio technology can improve the tense spectrum resources, but because of different modulation transmit signals on the same frequency band, the signal sent from the device once it is possible for the same band interference generated by the master, requiring the use of sophisticated algorithms to control operating frequency of the transmission power of the slave device to the master device to guarantee the communication quality. Further, between the secondary devices occupy the same frequency band will interfere with each other, and therefore need to consider the interference between the secondary device.
[0005]
For minor with different priorities (or QoS assurance level) of the DSA system, taking into account the need to design a next highest priority device, interference suppression method for the QoS guarantee times of different devices with different priorities, and has now proposed interference suppression method not considered a priority once the equipment.
[0006]
SUMMARY
[0007]
To solve the above problems, the present invention proposes a new DSA system suitable for interference suppression method and apparatus.
[0008]
According to one aspect of the present invention, there is provided a spectrum management apparatus, comprising one or more processors, the one or more processors are configured to: determine the system comprises a plurality of times and each time the device device location information; and according to the location information, determining the weights for a particular minor weighting factors, wherein said weighting factor for adjusting the power of the specific sub-device to another minor leak estimation.
[0009]
According to another aspect of the present invention, there is provided a secondary device in the secondary system, comprising one or more processors, the one or more processors are configured to: position information of the secondary device determines, for the frequency spectrum the management device determines weights for the secondary weighting factor device according to the location information.
[0010]
According to another aspect of the present invention, there is provided a communication system in the interference suppression method, the communication system comprises a spectrum management apparatus including a main system including a plurality of master devices, and a secondary system comprising a plurality of secondary devices, the method comprising: transmitting position information of each of the secondary device to the spectrum management apparatus; the spectrum management apparatus based on the position information received, determining weights for particular times of the weighting factor device; the second stage precoding power estimate to adjust the specific sub-device to another minor leakage of the weighting factors used in the second stage precoding.
[0011]
According to the present invention, the transmit pre-coding in consideration of the minor secondary device priority, the priority can be different views of different quality of service protection device (QoS). Further, to ensure the minor interference to the primary device is below a certain threshold premise, as compared to the conventional power control method, according to the techniques of the present invention makes minor restrictions on the maximum transmit power has been relaxed. The present invention is applicable to distinguish between minor priority DSA system, primary and secondary devices to achieve the QoS target joint optimization.
BRIEF DESCRIPTION
[0012]
Brief description given to a better understanding of the present invention can be incorporated by reference to the following, in which the same or similar reference numerals in the drawings to refer to the same or like parts. Drawings, together with the following detailed description of the present specification comprises a part of this specification and forming, and serve to further illustrate and explain the principles of the embodiments and advantages of the present invention is preferably present invention. In the drawings:
[0013]
FIG 1 is a schematic diagram showing a system architecture DSA;
[0014]
FIG 2 is a schematic flow determining interference leakage weighting factors;
[0015]
FIG 3 is a diagram for determining the transmit power of the secondary flow device;
[0016]
FIG 4A is a diagram for determining the process time to the master apparatus of a first example of the interference channel information;
[0017]
FIG 4B is a diagram for determining process to the master device times a second example of the interference channel information;
[0018]
4C is a flow chart of a third example of the interference channel information to the master device determines views of a schematic
[0019]
5A is a schematic view of the device for determining the specific sub-process to a first example of the interference channel information other secondary devices;
[0020]
5B is a schematic diagram of apparatus for determining the specific sub-process to the second example of the interference channel information other secondary devices;
[0021]
5C is a schematic view of the device for determining the specific sub-process to the third example the interference channel information other secondary devices;
[0022]
FIG 6 is a flow communication between the secondary device and the receiving side apparatus transmitting side schematic views;
[0023]
FIG 7 is a flowchart illustrating a transmit precoding algorithm and the demodulation two times apparatus;
[0024]
FIG 8 is a block diagram views apparatus according to the present invention;
[0025]
FIG 9 is a block diagram according to the present invention, the spectrum coordinator; and
[0026]
FIG 10 is a block diagram showing an example of configuration of computer hardware.
detailed description
[0027]
FIG 1 is a schematic diagram illustrating a multi-antenna system architecture DSA. Upper dashed box in FIG. 1 represents the main system, the host system comprises a plurality of primary base station N T-P and the legal use of the band will be allocated a plurality of communication with the master device PU 1 -PU m . Each master multi-antenna configuration, G J represents a channel matrix of the master system, n- P1 -n PM were added to each main communications channel device Gaussian white noise.
[0028]
The lower portion of FIG. 1 represented by a dotted secondary system, the secondary system includes a plurality of base stations time N T-S and a plurality of secondary devices SU using cognitive radio technology 1 -SU K . As described above, to ensure the communication quality of the premise of the master device, the slave device the SU . 1 -SU K one or more of the access band may be opportunistic legitimate master device, dynamic spectrum access, in order to improve the spectrum efficiency. Each secondary device having multiple antenna configuration, H RI denotes a channel matrix of the secondary system, n- S1 -n SK are respective views of a communication channel devices additive white gaussian noise.
[0029]
P between the upper and lower dashed boxes ji represents the channel matrix between the j-th master device transmitting side and the i-th minor receiving end, characterized by the interference of the master device to the slave device. Q ij of showing interference channel matrix between an i-th secondary devices transmitting end device and the j-th main receiving end, characterized by the secondary device to the master device.
[0030]
As mentioned above, different times have different priorities devices that have different QoS assurance level. The present invention proposes a leak interference weighting factor times in consideration of the case where the priority device. Interference leakage weighting factor for the minor leak for a specific time to the power of the other device (i.e. interference) weighting, enabling to guarantee different QoS depending on the priority of the slave device.
[0031]
Specifically, the higher the priority for a secondary device, the value of the interference leakage weighting factor is set to be smaller, and vice versa, the greater. Interference with a smaller leak weighting factor is multiplied by the particular minor leak to other minor power resulting value is also smaller, indicating that the leak may be estimated lower secondary device to power other minor, that is, you can underestimate the minor interference to other secondary devices. Therefore, the higher the priority for the secondary device, it can estimate the lowland interference from other times of the device. Such that during the launch precoding times higher priority than the lower priority device once the device may be considered less interference to other equipment caused times, it is possible to provide more than a low priority to high priority sub-device minor better QoS guarantee.
[0032]
FIG 2 shows a weighting factor determining interference leakage flow schematic. 2, the secondary device 100 in step S210, the position information of its spectrum to a coordinator (SC). Optionally, SC do not know the circumstances under priority device 100 times, 100 times the device will own priority also reported to the SC. Then SC in step S220 is determined based on the information received to the value of the interference leakage right views apparatus 100 weight factor α, α is in the active state (operation state) 100 according to a predetermined range of times the device with the frequency device having priority number and density as well as the number of stages in each of the sub-priority distribution device dynamic configuration, which can effectively prevent waste of system resources. Step 220 will be described in detail below. Then, SC sent to the secondary device 100 in step S230 the determined α.
[0033]
Further alternatively, the secondary apparatus 100 may also report the user payment information S210 to the step SC. In the case where the user pays a fee, SC leakage less interference may be determined weighting factor α 100 is the secondary device.
[0034]
Step S220 executed by the SC will be described in detail.
[0035]
When determining the interference leakage right views apparatus 100 a weighting factor [alpha], firstly, SC, for example, to determine the scope of the secondary device 100 according to the location information of the second device 100, the operating frequency and transmission power information (i.e., may be interfered views apparatus 100 range), then the number of all prioritized same frequency device in the active state within this range. Incidentally, for example, the working-frequency devices may be known in advance of the SC, and transmit power may be determined by the SC to the secondary device. For example, assume a secondary system having four priority levels (Level 1- Level 4) of the secondary device, but there are only the same frequency devices are three priority levels of activity (assumed that no level 2 within the scope of the minor 100 minor). In this case, the priority of the frequency with the number of all active devices within the scope of the device 100 may be determined as 3 times. Then, the priority of re-division of the same frequency equipment for all activities within the scope of the new Level 1- Level 3. For example, since there is no secondary device 2 to the original level, the level of the original can be divided into 3 sub-apparatus for the new level 2, and so on. Then, the average value α 3 are provided in the range [0, 1], for example, 0, 0.5 and 1, which correspond to the three values ​​of three new priority. In this example, assume the original secondary device 100 is a priority level 3, the re-division of the priority level becomes 2, then its interference leakage to determine the initial weight the weight factor α is 0.5.
[0036]
After the above preliminary determination, and then according to sub-device 100 having the same priority (level 2) activity number and density of the same frequency device distribution of α value "0.5" is adjusted, thereby determining the final interference leakage weight factor α. Specifically, if the number of the same frequency devices or distribution activities and more concentrated, in order to suppress the mutual interference between the same priority secondary device to protect various times QoS devices, each device needs more time to consider their own cause interference, thus increasing the need to determine the initial value α "0.5."
[0037]
Those skilled in the art can readily devise various adjustment programs depending on design requirements or actual application. For example, the division level number of the same priority range secondary devices provided corresponding to the adjustment amount for each level range, the amount of adjustment is not limited to the amount of increase, the amount may also be reduced. When the number of the same priority active secondary devices and the secondary device 100 falls within a certain level range may be adjusted according to the determined initial value α predetermined adjustment amount.
[0038]
FIG. 3 shows a schematic flow for determining transmit power of the secondary device 100. 3, the secondary device 100 in step S310, indicating whether own subspace report mapping information (SP) to the precoding spectrum coordinator SC. SP precoding based on subspace projection theory matrix, can transmit a signal projection views device to its zero spatial interference channel of the master apparatus, can be effectively suppressed spectrum dimensionless apparatus occupied by the master device causing the master device interference.
[0039]
Then at step S320 SC according to the received indication information, determining transmission power of the secondary device 100. Specifically, if the information indicating that the secondary device 100 can be precoded SP, the SC determines its transmit power according to the conventional power control method. If the information indicating that the secondary device 100 can perform precoding SP, it indicates that the secondary device 100 can suppress the interference of the master device to some extent. In this case, you can be relaxed restrictions on transmit power of the secondary device 100. SC can thus transmit power is appropriate to improve time apparatus 100 (as compared to the conventional power control), preferably the maximum increase 26dB. SC is then determined at step S330 to transmit power to the secondary device 100 notifies.
[0040]
Figures 4A-4C show three exemplary flow interfering channel information for determining the master device to the slave device.
[0041]
, The secondary device 100 in step S411 and the own location information reported to the SC device descriptor shown in FIG 4A. According to this device descriptor, SC can be obtained once the physical configuration of the device 100, for example 100 times the maximum transmission power of the device.
[0042]
Then, SC at step S412 to determine the scope (i.e., affected by interference range of the secondary device 100) in accordance with information such as position of the secondary device 100, the operating frequency, transmit power, etc., and then detected within a range of one or more of the position and the operating frequency of the master device, to determine the most vulnerable to the interference of the slave device 100 the master device (hereinafter referred to as "interference master"), and then using advanced geographic location engine (advanced Geolocation engine, AGE) database to determine the times device 100 to the interference by the interference channel information to the master device.
[0043]
Then, SC is determined in step S413 to the secondary device 100 interfering channel interference information to the master device 100 views the device.
[0044]
FIG 4B shows another example of the interference channel information to the master device determined times. In this example, we assume that the spectrum coordinator SC its device capability information of each host system master device, for example, may voluntarily report by way of the master device, the master device or by the SC to the interrogation mode.
[0045]
Device capability information may include, for example:
[0046]
Type of antenna array, e.g., a linear array, a planar array, a circular array and the like;
[0047]
Antenna boresight azimuth (Antenna borsight azimuth angle), starting from the northernmost coordinate represents longitudinal direction, clockwise angle to a straight line, is a real number in the range;
[0048]
Boresight elevation angle of the antenna (Antenna borsight elevation angle), an antenna from a direction parallel to the ground is lifted up to the vertical angle between the direction of the sky, in the range of real numbers.
[0049]
4B, the secondary device 100 in step S421, and the own location information reported to the device descriptor SC. As described above, the apparatus can include a secondary device descriptor maximum transmission power information 100.
[0050]
Then at step S422 SC to determine the scope of the position of the secondary device 100 according to the example, the operating frequency, transmit power information, and then detects the position of the operating frequency of the one or more host devices within this range to determine the most vulnerable to minor interference interfering master device 100.
[0051]
Then at step S423 the SC position information receiving interference parameters of the master device or other characterization of the relative position (hereinafter referred to as "location information"), and transmits device capability information to the device 100. Incidentally, if the SC position information interfered master does not know, the position information of the reference point may be adopted as the position information of interference master device, wherein the reference point is the coverage area from the time the apparatus main system 100 of the latest the position of the point.
[0052]
In step S424 the secondary device 100 to calculate its own interference between the interference channel information by the master device based on the position information and device capability information received by the interference to the master device.
[0053]
Figure 4C shows yet another example of the interference channel information between the device and the master device determines times.
[0054]
, The secondary device 100 in step S431 and the own location information reported to the SC device descriptor shown in FIG 4C. As described above, SC times the maximum transmit power may be learned apparatus 100 according to the device descriptor.
[0055]
Then at step S432 SC to determine the scope of the position of the secondary device 100 according to the example, the operating frequency, transmit power, and then detects the position of the operating frequency of the one or more master devices within this range to determine the most vulnerable sub-device 100 by interfering master device. Then sends the location information of the master device SC of interference at step S433 to the determined device 100.
[0056]
Secondary device 100 in step S434 the position information of interference master apparatus to the received information interaction and the actual channel measuring the interference master device, thereby obtaining 100 and interfering channel information between the interfering master views apparatus of this subject. For example, in order to perform channel measurement device 100 and the secondary device requires its own capability information to inform the other master devices interfered. Switching device capability information may be performed under the control of SC, may also be disturbed and the master device 100 itself is completed by wired or wireless link by the secondary device.
[0057]
FIGS. 5A-5C show a device for determining the specific sub-interfering channel information to the other secondary devices of three exemplary process.
[0058]
, The secondary device 100 in step S511 and the own location information reported to the SC device descriptor shown in FIG 5A. According to this device descriptor, SC can be obtained once the physical configuration of the device 100, for example 100 times the maximum transmission power of the device.
[0059]
Then, SC at step S512 to determine the scope (i.e., affected by interference range of the secondary device 100) in accordance with the position of 100 for example, the operating frequency, transmit power of a secondary device, and detect one or more times within the range of other position and the operating frequency of the device, to determine times by other minor interference device 100, and then using the database to determine AGE secondary device 100 to the interference devices other secondary channel information.
[0060]
Then, at step S513 the interference SC secondary device 100 to determine the other secondary devices transmitting channel information to the secondary device 100.
[0061]
FIG 5B shows another example of the interference channel information to determine the times between devices. In this example, sub-systems of the various sub-device reports its device capability information to the spectrum coordinator SC regularly.
[0062]
5B, the secondary device 100 in step S521, and the own location information reported to the device descriptor SC. As described above, the apparatus can include a secondary device descriptor maximum transmission power information 100.
[0063]
Then in step S522, for example, SC position of the secondary device 100, the operating frequency, transmit power, to determine the scope, and then detects the position of the operating frequency of one or more other devices within the sub-range to be determined according to the device 100 times other minor disturbances.
[0064]
SC S523 and then transmits (or other parameter characterizing the relative position information) of the position information of the other views of the device of the determined interference and device capability information to the device in step 100.
[0065]
In step S524 the secondary device 100 to calculate its own interference with the interference channel information between the secondary device and the position information receiving device capability information received by the interference to a secondary device.
[0066]
5C shows a further example of the interference channel information to determine the times between devices.
[0067]
, The secondary device 100 in step S531, and the own location information reported to the SC device descriptor shown in FIG 5C.
[0068]
Then, SC, for example, at step S532 the position of the secondary device 100, the operating frequency, transmit power, to determine the scope and with the other frequency determining apparatus 100 by the interference of the secondary devices within range. FIG.
[0069]
SC S533 then sends the location information of the other devices disturbed times determined in step 100 to the device.
[0070]
In step S534 the secondary device 100 according to the position information of the minor interference received, minor interference with the information interaction and the actual measurement channel, thereby obtaining channel information 100 interfering interference between the secondary device and receiving device views. For example, in order to perform channel measurement device 100 and the secondary device requires its own capability information to inform the other minor interference. Switching device capability information may be performed under the control of SC, it may also be disturbed and the secondary device 100 is completed by wired or wireless link itself by the secondary device.
[0071]
FIG 6 shows a flowchart for communication between the secondary device, the process includes two precoding transmitting end and demodulation processing of receiving end.
[0072]
6, the secondary device 600 in step S610 the transmitting end a first stage pre-coding, i.e. precoding SP, 600 so as to suppress the interference on the same frequency sub master apparatus. In a first stage of the pre-encoding, the apparatus described above using 600 times interfered channel interference to the master information.
[0073]
Subsequently, the secondary device 600 in the second stage precoding step S620, the secondary device 600 so as to suppress interference to other views of the device of the same frequency. In the second stage pre-coding will be used to interfere with other secondary devices 600 of the channel information of the second apparatus described above.
[0074]
The second stage of the present invention is a pre-coding noise ratio improvement (SLNR) the conventional algorithm for signal leakage. Improved focus into account the different views devices having different priorities, and therefore introduces interference leakage priority weight associated weighting factor α. Higher times higher priority QoS protection apparatus according to a second stage of the present invention can be pre-coding is. A second stage pre-coding will be described in detail later.
[0075]
Then, the transmitting end sub-device 600 weighting factor α in the precoding using the interference leakage right step S630, the transmission and the interference channel information by the interference channel information of interfering master device, as well as other minor disturbed to a receiving end sub device 700. Alternatively, for example, in the example shown in FIG. 4A, 5A, the SC may be composed, rather than secondary transmitter device 600, transmits the information directly to a receiving end device 700 times.
[0076]
Further, the transmitter 600 S640 secondary device transmits data to the receiving terminal device 700 in time step. Note that, although FIG 6 shows the step of transmitting two information and data, but the present invention is not limited thereto. For example, in a different order or may be used to transmit the information and data in the same step.
[0077]
Then, the receiving device 700 side views step S650 to demodulate the received interference channel information and interference leakage weighting factors, using minimum mean square error (MMSE) criterion based on the received data.
[0078]
FIG. 6 shows only schematically a general communication process, may be various modifications of the above process according to the actual situation.
[0079]
For example, when the master work, step S610 is omitted precoding SP does not exist in the primary system, the second stage pre-coding end of the secondary device 600 in step S620 is performed only emission. Accordingly, as shown in Figures 4A-4C the device for acquiring and processing times by the interference between the interference channel information of the master device may be omitted.
[0080]
Also for example, when applied to the present invention does not distinguish between minor priority DSA system, it is not necessary to consider the priority of each of the slave device in the second stage so precoding, may be determined for each minor interference leakage equal weighting factor [alpha], for example, the value of [alpha] are set to 1. In this case, the second stage will be the same precoding SLNR conventional algorithms.
[0081]
FIG 7 is a flowchart illustrating a secondary transmitter pre-coding device and the receiver demodulation algorithm.
[0082]
As shown in FIG 7, at step S710, the transmitter as for the i-th secondary device, the master device determines its most vulnerable to interference, and to determine the i-th secondary device to the master device by interfering channel information. Then, (1) obtaining a first stage pre-coding matrix based on the determined interference channel information by the following equation to perform a first pre-coding stage.
[0083]
[0084]
Wherein, it represents a normalized secondary device to the i-th spatial interference by zero channel matrix interference master device.
[0085]
Particularly, in the case where the master work does not exist, a first stage may be pre-coding matrix to matrix.
[0086]
In step S720, the transmitter as for the i-th secondary device, determines the second level pre-coding matrix for a second pre-coding stage.
[0087]
As described above, the second stage pre-coding according to the present invention is an improvement over the traditional SLNR algorithm. The present invention proposes PSLNR, i.e. priority-based noise ratio of the signal leakage. PSLNR defined as follows:
[0088]
[Number 0001]

[0089]
Where H II represents the i-th secondary device to its channel matrix receiving end views device in communication, F. I denotes a precoding matrix the i-th secondary device, and X i represents the data of the i-th secondary device sends, [alpha] i denotes an interference leakage weight of the i th minor weighting factors, H IR denotes the i-th secondary device to the r th channel matrices other secondary devices, n- Si denotes against additive noise of the i th sub-device, the i N represents power for the i-th minor noise.
[0090]
Power, the first term of the denominator represents the i-th minor above equation (2) represents the i-th molecular moiety minor leakage of the useful signal to the other (k-1) th power sum of the slave device, i.e., the i-th minor interference to other secondary devices, the second term in the denominator portion indicates the noise power.
[0091]
In this case, to solve the i-th stage second minor precoding matrix F. I (2) optimization problem can be expressed as follows:
[0092]
[Number 0002]

[0093]
Wherein, P i is the transmit power of the i-th secondary device. The above equation (3) described, can be solved by making the maximum value PSLNR precoding matrix to obtain a second stage pre-coding matrix of the second stage pre-coding matrix solver obtained can be expressed as follows:
[0094]
[0095]
Wherein, Φ [A, B] represents the feature vector A, the maximum eigenvalue of a matrix B consisting of the beam corresponds.
[0096]
According to the above equation (4) can be seen, the introduction of interference leakage weighting factor α is calculated precoding matrix in a second stage, and α is the next highest priority device based on determined. Thus, according to the present invention the second-stage pre-coding in consideration of the secondary devices of different priorities, different priorities may be implemented as a secondary protection device different QoS purposes.
[0097]
Next, at step S730, as a receiver for the i-th secondary device, using an MMSE criterion to determine the weighting matrix W demodulation Si , as the following equation (5):
[0098]
[0099]
among them,
[0100]
8 illustrates a block diagram of apparatus according to the present invention are secondary. As shown, the apparatus 800 includes a determination sub-unit 810, a first pre-encoding unit 820, second pre-encoding unit 830, a demodulation unit 840, generating unit 850, an interference channel information determination unit 860 and a communication unit 8708. Incidentally, the interference channel information determination unit 860 may be optional, for example, in the embodiment shown in FIG. 4A and 5A, the secondary device 800 may not have the interference channel information determination unit 860.
[0101]
Determination unit 810 for determining the location of the device 800 times, priority, billing information, device capability information and the like, one or more, in order to report information to the SC. A first pre-encoding unit 820 using device 800 times interfering channel interference information to the master device performing a first pre-coding stage SP described above. The second pre-encoding unit 830 of the second stage 800 for performing precoding other interference interference channel information and an interference device leakage views weighting factor using the secondary device. Demodulation unit 840 of the device 800 times using the master device and the interference to other weight factor interfered interference channel information and an interference device right views leakage, demodulation is performed based on the MMSE criterion. Generating unit 850 for generating a time indicating device 800 can be a first stage SP precoding information, to report to the SC. In 4B-4C, the embodiment of FIGS. 5B-5C, the interfering channel information determination unit 800 secondary apparatus 860 may be used to determine an interference master device or other interference between the interference channel information by the receiving device and the views. Further, the communication unit 870 for secondary device 800 transmits a signal between the device and other secondary or SC / reception.
[0102]
FIG 9 illustrates a block diagram according to the present invention, the spectrum coordinator (SC) of. 9, SC 900 including interference leakage weighting factor determination unit 910, transmit power determination unit 920, a storage unit 930, an interference channel information determination unit 940, and a communication unit 950. Incidentally, the interference channel information determination unit 940 may be optional, for example, in the 4B-4C embodiment shown in FIGS. 5B-5C, SC 900 may not have the interference channel information determination unit 940.
[0103]
Interference leakage weighting factor determination unit 910 for determining the right time for interference leakage according to a weighting factor device location information of the second device, the operating frequency, transmit power, priorities, billing information, and the like or a plurality. A transmission power determination unit 920 for determining transmit power used for the secondary device can perform precoding according to SP. A storage unit 930 for storing position information of the slave device, the operating frequency, transmit power, priorities, billing information, device capability information and the like, and may also store location information of the master device in the main system, operating frequency, device capability information, etc. . In the embodiment of FIGS. 4A and 5A, the interfering channel information determination unit 940 may be used to determine the times using AGE database device and the master device or other interference by the interference between the interference channel information by the secondary device. The communication unit 950 for SC 900 and the secondary device or the master device a signal transmission / reception.
[0104]
The main system discussed in this article, for example, may be a television broadcast system or proposed by the US Federal Communications Commission (FCC) US radar system (3550-3650MHZ). Further, for example, may be used in the LTE-U 5GHZ band system in accordance with the techniques of the present invention.
[0105]
Above figures described specific embodiments of the invention in conjunction with the following technical effects can be achieved in accordance with the techniques of this disclosure:
[0106]
Transmitter uses two pre-coding, respectively, for the same frequency of the master device to suppress interference and co-channel interference with respect to other secondary devices.
[0107]
QoS guarantee under the premise of the master device, able to have different priorities of different levels of QoS equipment protection times higher priority minor can obtain a higher QoS lower priority than that of the secondary device.
[0108]
As a result of pre-coding SP to suppress interference of the secondary device the master device, so compared to the conventional power control method, the SP for minor precoding constraints relaxation of maximum transmit power, the maximum transmit power can be increased 26dB.
[0109]
The present invention can be applied not only to distinguish between minor priority DSA system, may be applied to the secondary device does not distinguish between priority DSA system. When applied to the latter, simply for interfering with the minor leak weight of each weighting factor is set to the same value.
[0110]
Mobile cellular network based on the current situation in a macro cell, small cell, a pico cell, a home base station, the D2D other networks coexist, delamination / 5G hierarchical cellular mobile communication networks become cognitive radio applications where, the present invention incorporates future trends, has a very broad application prospects.
[0111]
Incidentally, various devices or components described herein is merely a logical sense, and not strictly correspond to a physical device or component. For example, the function of each component described herein may be implemented by a plurality of physical entities, or a plurality of functional components described herein may be implemented by a single physical entity.
[0112]
In the above embodiment, a series of processes executed by each device or component may be implemented by software, hardware or a combination of software and hardware. Included in the software program may be stored in advance in a storage medium inside or outside each device or set of components. As one example, during the execution of these programs are written into a random access memory (RAM) and executed by a processor (e.g. CPU).
[0113]
FIG 10 is a block diagram illustrating an exemplary configuration of computer hardware performing the above-described series of processes according to a program.
[0114]
In the computer 1000, a central processing unit (CPU) 1001, a read only memory (ROM) 1002 and random access memory (RAM) 1003 are connected to each other by a bus 1004.
[0115]
Input / output interface 1005 is further connected to the bus 1004. Input / output interface 1005 is connected to the following components: an input unit to a keyboard, a mouse, a microphone, or the like 1006; an output to a display unit, a speaker, etc. 1007 formed; a storage unit to a hard disk, a nonvolatile memory or the like 1008; in a network interface card (such as a local area network (LAN) card, modem, etc.) 1009 formed by the communication unit; and a removable media drive 1011 drive 1010, the removable medium 1011 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.
[0116]
In the computer having the above-described structure, CPU 1001 loads the program stored in the storage unit 1008 via the input / output interface 1005 and bus 1004 to the RAM 1003, and executes the program, so as to perform the above-described series of processes.
[0117]
Programs to be executed may be recorded by the computer (CPU 1001) 1011 on the removable medium as a package medium, the package medium such as magnetic disk (including a flexible disk), optical disc (including compact disk - read only memory (CD-ROM)), digital versatile disc (DVD), etc.), a magneto-optical disk, or a semiconductor memory formed. Moreover, programs to be executed may be via a local area network, such as a computer (CPU 1001), the Internet, digital satellite broadcasting or wired or wireless transmission medium provided.
[0118]
When the removable medium 1011 is mounted in the drive 1010, the input / output interface 1005 installed in the storage unit 1008 via a program. Further, the program may be received by the communication unit 1009, and installed in the storage unit 1008 via a wired or wireless transmission medium. Alternatively, the program can be installed in the ROM 1002 or the storage unit 1008.
[0119]
To the computer executes may be a program to execute the processing according to the sequence described in this specification, or may be performed in parallel or when necessary processing (such as when invoked) to execute a process.
[0120]
Has been described in detail in conjunction with the above embodiments and technical effects of the invention are shown, but the scope of the present invention is not limited thereto. One of ordinary skill will appreciate that, depending on design requirements and other factors without departing from the principles and spirit of the present invention, various modifications or variations may be made to the embodiments discussed herein. Scope of the invention defined by the appended claims or the equivalents thereof.
[0121]
Further, the present invention may also be configured as follows.
[0122]
One kind of spectrum management apparatus, comprising one or more processors, the one or more processors are configured to: determine a plurality of secondary system comprises a location information of the slave device in each secondary device; and according to the position information, specific sub-device determines weights for weighting factors, wherein said weighting factor for adjusting the power estimation of the specific sub-device to another device once the leak.
[0123]
The one or more processors are further configured to: determine a priority of each secondary device; priority number with all active frequency device within the specific sub-determining device having a predetermined range, and based on the priority the number of stages of the preliminary determination value of the weighting factor; and a value initially determined to be adjusted according to the number or the distribution density of the same frequency device having the same priority activity of the particular slave device, to determine the weighting factor .
[0124]
In the case of a higher priority of the specific sub-device, the determined right small weight factor.
[0125]
The one or more processors are further configured to: according to the number of priority with all active frequency apparatus having a preliminarily determined value of the weighting factor is uniformly in the range of 0-1.
[0126]
The one or more processors are further configured to: in a case where the number or frequency distribution of the same device with the same priority to the specific activity minor density exceeds a predetermined threshold value, increasing the value of the initially identified .
[0127]
The one or more processors are further configured to: payment information device determines the specific times, and payment information according to the determined times for the particular weighting factor device.
[0128]
The one or more processors are further configured to: determine whether the specific sub-apparatus for pre-coding a first stage; and according to the determination result, to the specific sub-device determines the transmission power, wherein, in the the case where the secondary device is capable of a first specific precoding stage, higher transmit power is determined as the particular slave device.
[0129]
The one or more processors are further configured to: position information and a transmission power, the channel information database using the specific sub-device, a first interference determining apparatus of the specific sub-primary system specific master device channel information, and the specific sub-channel second interference device other minor details.
[0130]
The one or more processors are further configured to: based on the position information of the specific sub-device transmission power and determining the position of a specific main device main system-related information and / or device capability information, and other secondary devices location related information and / or device capability information.
[0131]
One minor minor device system, comprising one or more processors, the one or more processors are configured to: the secondary device determines location information for spectrum management device determines according to the location information with the secondary device to the right weighting factors.
[0132]
The one or more processors are further configured to perform a second stage pre-coding, used to adjust the weights determined by the spectral weighting factors management device in the second stage in the pre-coding sub-device to another device once estimated leakage power.
[0133]
The one or more processors are further configured to determine the priority of the secondary device, so that the spectrum management apparatus to determine the weighing factor according to the priority, wherein the priority than the secondary device in is high, the less weight the determined weight factor.
[0134]
The number of priority by the weighting coefficient having the spectrum management apparatus in accordance with the frequency of all active devices within a predetermined range of the secondary device, the number or the density distribution in each of the priority of the slave device determined.
[0135]
The one or more processors are further configured to: prior to performing the second stage of the pre-coding, a first pre-coding stage.
[0136]
The one or more processors are further configured to: generate a device for indicating whether the secondary information for a first stage pre-encoded so that the spectrum management apparatus based on the information for determining the secondary device transmit power, wherein, in a case where the information indicates that the secondary device is capable of performing a first stage of pre-coding, the spectrum management apparatus determines the secondary device is a higher transmit power.
[0137]
The one or more processors are further configured to: use the secondary equipment device a first specific main interference in the primary channel system information, the first stage pre-coding; and the secondary use of the apparatus said second interference channel information sub-system other secondary devices, the second stage for pre-coding.
[0138]
The first interference channel information and the second interference channel information by the spectrum management apparatus is determined according to the position information and the transmission power of the secondary device and using the channel information database.
[0139]
The one or more processors are further configured to: The position of the specific master device determined by the spectral information management device and / or device capability information, determining the first interference channel information; and The the position determined by the spectrum management apparatus other minor related information and / or device capability information, determining the second interference channel information.
[0140]
The one or more processors are further configured to: using the specific master device determined by the spectral location related information management device, the device capability information specific to the master device for channel measurement, to determine the said first interference channel information; and using the spectrum determined by the sub-device management device other location-related information, the device capability information of other secondary devices for channel measurement, thereby determining the second interference channel information.
[0141]
The device capability information includes the type of antenna array, the antenna boresight azimuth and elevation angle of the antenna boresight.
[0142]
The master device specific location information is location information related to the reference point, the reference point is the coverage area of ​​the main system from a position closest to the secondary device.
[0143]
The one or more processors are further configured to: using the weighting factor, the first interference channel information and the second interference channel information to demodulate the received signal.
[0144]
A communication method for suppressing interference in the system, the communication system comprises a spectrum management apparatus including a main system including a plurality of master devices, and a secondary system comprising a plurality of secondary devices, the method comprising: a spectrum management to each device sends the location information to the secondary device; the spectrum management apparatus based on the position information received, determining weights for weighting factor specific sub-device; and performing a second pre-encoding stage, in the second stage precoding using the weighting factors to adjust the estimate of the power of the specific sub-device to another device once the leak.
[0145]
The weighting factor having a range of values ​​from 0 to 1.
[0146]
The method further comprising: transmitting a priority of each of said secondary device to the spectrum management apparatus; and the spectrum management apparatus according to the received priority determining weights for said particular sub weighting factor device, wherein, in the case of a higher priority of the specific sub device, the determined weights small weight factor.
[0147]
The method further comprising: determining a number of the same frequency priority device of all activities within the specific sub-device having a predetermined range, and the initial values ​​of the weighting factors is determined based on the number of priority classes; and according to the the number or distribution density of said device with frequency specific sub-device having the same priority activities, to determine the initial value is adjusted, thereby determining the weighting factors.
[0148]
The method further comprising: prior to performing the second stage of the pre-coding, a first stage for pre-coding.
[0149]
The method further comprising: transmitting to the spectrum management apparatus for indicating the specific sub-device can perform a first stage pre-coding information; and the spectral emission of the specific sub management device information determination device according to the power, wherein, in a case where the information indicates that the device is capable of specific sub-coding a first stage of pre-determined higher transmit power for said particular slave device.
[0150]
The method further comprising: the spectrum management apparatus and transmit the position information of the specific sub power device, using the channel information database, the first interference determining the specific sub-apparatus of the host system in a particular master device channel information and the channel information of the specific sub-device interference from other views for the second device, and transmitting the first interference channel information and the second interference channel information to the particular slave device.
[0151]
The method further comprising: the spectrum management apparatus and transmit power based on the position information of the specific sub-device, the master device determines the particular position of the main system-related information and / or device capability information, and other times devices related information and / or device capability information, and sends the specific sub-device; and the apparatus according to the specific sub-location of the master device specific information and / or device capability information, to determine which of the particular master device an interference channel information, and according to the position of the other sub information apparatus and / or device capability information, determining a second interference channel information to the other secondary devices.
[0152]
The method further comprising: the spectrum management apparatus and transmit the position information of the specific sub power device, the specific position of the master device in the host system, and other relevant information of the slave device determining information, and sends the specific sub-device; and the specific sub-location of the apparatus according to the master device specific information, the device capability information specific to the master device for channel measurement, thereby determining a first interference channel information, and in accordance with the location related information other secondary devices, the device capability information of other secondary devices for channel measurement, thereby determining a second interference channel information.
[0153]
The method further comprising: using the apparatus of the specific sub weighting factors, the first interference channel information and the second interference channel information to demodulate the received signal.

Claims
[Claim 1]
One kind of spectrum management apparatus, comprising one or more processors, the one or more processors are configured to: determine a plurality of secondary system comprises a location information of the slave device in each secondary device; and according to the position information, specific sub-device determines weights for weighting factors, wherein said weighting factor for adjusting the power estimation of the specific sub-device to another device once the leak.
[Claim 2]
The spectrum management apparatus according to claim 1, the one or more processors are further configured to: determine a priority of each secondary device; same frequency of all active devices in the specific sub-device determines a predetermined range having the number of priorities, and according to the priority to determine the number of initial values ​​of the weighting factors; and the same number or frequency distribution density of devices, initially identified with the same priority according to the specific activity minor value is adjusted, thereby determining the weighting factors.
[Claim 3]
The spectrum management apparatus according to claim 2, wherein, in the specific sub-device having the higher priority, the less weight the determined weighting factor.
[Claim 4]
The spectrum management apparatus according to claim 2, wherein the one or more processors are further configured to: according to the number of priority with all active frequency device has preliminarily determined uniformly over the range of 0-1 said weighting factor values.
[Claim 5]
The spectrum management apparatus according to claim 2, the one or more processors are further configured to: the number of the same frequency device having the same priority to the specific activity or a secondary device distribution density exceeds a predetermined threshold value case, increasing the value of the initially identified.
[Claim 6]
The spectrum management apparatus according to claim 1, wherein the one or more processors is further configured to: payment information device determines the specific times, and payment information according to the determined times for the particular device weighting factor.
[Claim 7]
The spectrum management apparatus according to claim 1, wherein the one or more processors is further configured to: determine whether the specific sub-apparatus for pre-coding a first stage; and according to the determination result as the specific secondary device determines a transmission power, wherein, in a case where the specific sub-device to a first stage of pre-coded, higher transmit power is determined as the particular slave device.
[Claim 8]
Spectrum management apparatus according to claim 7, the one or more processors are further configured to: based on the position information of the specific sub-device and a transmit power, using the channel information database to determine the specific sub-device of a first interference channel information, device-specific and the specific sub-system master main channel second interference information other secondary devices.
[Claim 9]
Spectrum management apparatus according to claim 7, the one or more processors are further configured to: based on the position information of the specific sub-device transmission power and determining the position of a specific main device host system infos and / or device capability information, and a location other minor related information and / or device capability information.
[Claim 10]
One minor minor device system, comprising one or more processors, the one or more processors are configured to: the secondary device determines location information for spectrum management device determines according to the location information with the secondary device to the right weighting factors.
[Claim 11]
The secondary device of claim 10, wherein the one or more processors are further configured to perform a second stage pre-coding, determined by the right to use the spectrum management apparatus in the second stage precoding weight factor adjusting the estimate of the secondary device to other minor leakage power.
[Claim 12]
The secondary apparatus according to claim 10, said one or more processors are further configured to determine the priority of the secondary device, the spectrum management apparatus to determine the weight according to the priority weighting factor, wherein in the case of a higher priority of the secondary device, the determined weights smaller weighting factors.
[Claim 13]
The number of times the priority of the apparatus claimed in claim 12, wherein the weighting factor is the spectrum management apparatus having the same frequency according to all active equipment within a predetermined range of the views of the apparatus, the priority level of views the number or density of the distribution device determined.
[Claim 14]
The secondary apparatus according to claim 10, said one or more processors are further configured to: prior to the second stage pre-coding is performed, a first pre-coding stage.
[Claim 15]
The apparatus according to claim 14 times, the one or more processors are further configured to: generate a device for indicating whether the secondary information precoded first stage, so that the spectrum management apparatus according to the determining said information for a case where the secondary power transmitting apparatus, wherein the information indicating that the secondary device is capable of performing a first stage of pre-coding, the spectrum management apparatus to the secondary high transmit determining apparatus power.
[Claim 16]
The apparatus according to claim 15 times, the one or more processors are further configured to: use the secondary device of the first interference channel information specific main device in the host system, perform the first pre-stage coding; and using the secondary second device to the secondary system interference to other channel information of the slave device performs the second pre-coding stage.
[Claim 17]
Ci apparatus according to claim 16, wherein the first interference channel information and the second interference channel information by the spectrum management apparatus and the position information transmitting apparatus and the secondary power using the channel information database It determined.
[Claim 18]
The apparatus according to claim 16 times, the one or more processors are further configured to: The position of the specific master device determined by the spectral information management device and / or device capability information is determined the first interference channel information; and according to the position determined by the spectrum management apparatus other minor related information and / or device capability information, channel information for determining the second interference.
[Claim 19]
The apparatus according to claim 16 times, the one or more processors are further configured to: use the information relevant to the specific location of the master device determined by the spectrum management apparatus, the apparatus determines a particular master device capability information for channel measurement, thereby determining the first interference channel information; and using the spectrum determined by the sub-device management device other location-related information, the device capability information to the other sub-channel device measured, thereby determining the second interference channel information.
[Claim 20]
The secondary device of claim 18 or claim 19, wherein the device capability information includes the type of antenna array, the antenna boresight azimuth and elevation angle of the antenna boresight.
[Claim 21]
The secondary device of claim 18 or claim 19, wherein said master device specific location information is location information related to the reference point, the reference point is the coverage area of ​​the main system from a position closest to the secondary device .
[Claim 22]
The apparatus according to claim 16 times, the one or more processors are further configured to: using the weighting factor, the first interference channel information and the second interference channel information to demodulate the received signal.
[Claim 23]
A communication method for suppressing interference in the system, the communication system comprises a spectrum management apparatus including a main system including a plurality of master devices, and a secondary system comprising a plurality of secondary devices, the method comprising: a spectrum management to each device sends the location information to the secondary device; the spectrum management apparatus based on the position information received, determining weights for weighting factor specific sub-device; and performing a second pre-encoding stage, in the second stage precoding using the weighting factors to adjust the estimate of the power of the specific sub-device to another device once the leak.
[Claim 24]
The method according to claim 23, wherein the weighting factor having a value ranging from 0 to 1.
[Claim 25]
The method according to claim 23, further comprising: transmitting a priority of each of said secondary device to the spectrum management apparatus; and the apparatus for spectrum management according to the received priority, to determine the specific right views weighting factor device, wherein, in the case of a higher priority of the specific sub device, the determined weights smaller weighting factors.
[Claim 26]
The method according to claim 25, further comprising: determining a number of the same frequency priority device of all activities within the specific sub-device having a predetermined range, and to preliminarily determine the weighing factor according to the priority number of value; and, determine the initial value is adjusted according to the number or frequency distribution density of the same device with the same priority to the specific activity secondary device, to determine the weighting factor.
[Claim 27]
The method according to claim 23, further comprising: prior to performing the second stage of the pre-coding, a first stage for pre-coding.
[Claim 28]
The method according to claim 27, further comprising: a spectrum management apparatus to the transmitting apparatus for indicating whether the specific sub-stage for a first pre-coding information; and the spectrum management apparatus based on the information determining transmitting said specific sub power device, wherein, in a case where the information indicates that the device is capable of specific sub-coding a first stage of pre-determined higher transmit power for said particular slave device.
[Claim 29]
The method according to claim 28, further comprising: a spectrum management apparatus and transmit the position information of the specific sub power device, using the channel information database to determine the specific sub-device specified in the host system a first master device and the interfering channel information of the specific sub-channel information to the second device from interfering with other secondary devices, and transmitting the first interference channel information and the second interference channel information to the particular slave device.
[Claim 30]
The method according to claim 28, further comprising: a spectrum management apparatus and transmit power based on the position information of the specific sub-device, the master device determines the particular location of the main system-related information and / or device capability information and a location other minor related information and / or device capability information, and sends the specific sub-device; and the apparatus according to the specific sub-location of the master device specific information and / or device capability information, which is determined by said first interference channel information for a particular master device, and the other based on the position information of the slave device and / or device capability information, determining a second interference with the other minor channel information.
[Claim 31]
The method according to claim 28, further comprising: a spectrum management apparatus and transmit power based on the position information of the specific sub-device, the master device determines the particular position of the main system-related information, and other secondary devices information, and sends the specific sub-device; and the specific sub-location of the apparatus according to the master device specific information, device capability information to determine the particular master device for channel measurement, thereby determining a first interference channel information, and the other based on the position information of the slave device, the device capability information of other secondary devices for channel measurement, thereby determining a second interference channel information.
[Claim 32]
A method according to any one of claims 29-31, further comprising: using the apparatus of the specific sub weighting factors, the first interference channel information and the second interference channel information to demodulate the received signal of.