WO2016180150A1 - 动态频谱接入系统中抑制干扰的方法和设备 - Google Patents
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- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
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Definitions
- a secondary device in a secondary system comprising one or more processors, the one or more processors configured to: determine location information of the secondary device for spectrum The management device determines a weighting factor for the secondary device based on the location information.
- the SC In determining the interference leakage weighting factor ⁇ for the secondary device 100, first, the SC, for example, Determining the range of influence of the secondary device 100 (ie, the range of interference that may be affected by the secondary device 100) according to the information of the location information, the operating frequency, and the transmission power of the secondary device 100, and then determining the priority of all the same-frequency devices in the active state within the range. The number of levels. It should be noted that, for example, the operating frequency of the secondary device may be known in advance by the SC, and the transmit power may be determined by the SC for the secondary device.
- the number of secondary devices of the same priority may be divided into a range of levels, and a corresponding adjustment amount is set for each level range, and the adjustment amount is not limited to the amount of increase, and may be a decrease amount.
- the initially determined alpha value may be adjusted according to a preset adjustment amount.
- Antenna array types such as linear arrays, planar arrays, circular arrays, etc.
- FIG. 5B shows another example of determining interference channel information between secondary devices.
- each secondary device in the secondary system periodically reports its own device capability information to the spectrum coordinator SC.
- the secondary device 100 reports its own location information and device descriptor to the SC in step S531.
- the transmitting end device 600 transmits the interference leakage weighting factor ⁇ used in the precoding, the interference channel information of the interfered master device, and the interference channel information of the interfered other secondary device to the receiving end in step S630.
- Device 700 may also be directly transmitted to the receiving end device 700 by the SC instead of the transmitting terminal device 600.
- an equal interference leakage weighting factor can be determined for each secondary device.
- ⁇ for example, the value of ⁇ can be set to 1.
- the second level precoding will be the same as the traditional SLNR algorithm.
- the second level precoding of the present invention is an improvement over the conventional SLNR algorithm.
- the present invention proposes a PSLNR, a priority based signal leakage noise ratio.
- PSLNR is defined as follows:
- the numerator portion of the above equation (2) represents the power of the useful signal of the ith secondary device
- the first term of the denominator portion represents the sum of the powers of the ith secondary device leaked to other (k-1) secondary devices, ie The interference of the i-th secondary device to other secondary devices
- the second term of the denominator portion represents the noise power
- ⁇ [A, B] represents the eigenvector corresponding to the maximum eigenvalue of the matrix bundle formed by A and B.
- the transmitter adopts two-stage precoding to suppress interference to the same-frequency master device and interference to other devices in the same frequency.
- the hierarchical/hierarchical cellular network becomes a cognitive radio application in 5G mobile communication, so the present invention combines The future development trend has a very broad application prospect.
- a secondary device in a secondary system comprising one or more processors, the one or more processors configured to: determine location information of the secondary device, such that the spectrum management device determines the location information based on the location information The weighting factor of the secondary device.
- the one or more processors are further configured to: perform the second level precoding Before, the first level of precoding is performed.
- the first interference channel information and the second interference channel information are determined by the spectrum management device according to location information and transmission power of the secondary device and using a channel information database.
- the one or more processors are further configured to demodulate the received signal using the weighting factor, the first interfering channel information, and the second interfering channel information.
- the weighting factor has a value ranging from 0 to 1.
- the method further includes: transmitting a priority of each of the secondary devices to the spectrum management device; and the spectrum management device determining a weighting factor for the particular secondary device based on the received priority, Wherein, in the case that the priority of the specific secondary device is high, the determined weighting factor is small.
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Abstract
Description
Claims (32)
- 一种频谱管理设备,包括一个或多个处理器,所述一个或多个处理器被配置为:确定包括多个次设备的次系统中的每个次设备的位置信息;以及根据所述位置信息,确定用于特定次设备的权重因子,其中,所述权重因子用于调节对所述特定次设备向其它次设备泄露的功率的估计。
- 根据权利要求1所述的频谱管理设备,所述一个或多个处理器进一步被配置为:确定每个次设备的优先级;确定所述特定次设备预定范围内的所有活动的同频次设备具有的优先级的数目,并根据所述优先级的数目初步确定所述权重因子的值;以及根据与所述特定次设备具有相同优先级的活动的同频次设备的数目或分布密度,对初步确定的值进行调整,从而确定所述权重因子。
- 根据权利要求2所述的频谱管理设备,其中,在所述特定次设备具有较高优先级的情况下,所确定的权重因子较小。
- 根据权利要求2所述的频谱管理设备,所述一个或多个处理器进一步被配置为:根据所有活动的同频次设备具有的优先级的数目,在0-1的范围上均匀地初步确定所述权重因子的值。
- 根据权利要求2所述的频谱管理设备,所述一个或多个处理器进一步被配置为:在与所述特定次设备具有相同优先级的活动的同频次设备的数目或分布密度超过预定阈值的情况下,增大所述初步确定的值。
- 根据权利要求1所述的频谱管理设备,所述一个或多个处理器进一步被配置为:确定所述特定次设备的付费信息,并且根据所述付费信息来确定用于所述特定次设备的权重因子。
- 根据权利要求1所述的频谱管理设备,所述一个或多个处理器进一步被配置为:确定所述特定次设备能否进行第一级预编码;以及根据所述确定结果,为所述特定次设备确定发射功率,其中,在所述特定次设备能够进行第一级预编码的情况下,为所述特定次设备确定较高的发射功率。
- 根据权利要求7所述的频谱管理设备,所述一个或多个处理器进一步被配置为:根据所述特定次设备的位置信息以及发射功率,使用信道信息数据库,来确定所述特定次设备对主系统中的特定主设备的第一干扰信道信息,以及所述特定次设备对其它次设备的第二干扰信道信息。
- 根据权利要求7所述的频谱管理设备,所述一个或多个处理器进一步被配置为:根据所述特定次设备的位置信息以及发射功率,确定主系统中的特定主设备的位置相关信息和/或设备能力信息,以及其它次设备的位置相关信息和/或设备能力信息。
- 一种次系统中的次设备,包括一个或多个处理器,所述一个或多个处理器被配置为:确定所述次设备的位置信息,以便频谱管理设备根据所述位置信息来确定用于所述次设备的权重因子。
- 根据权利要求10所述的次设备,所述一个或多个处理器进一步被配置为进行第二级预编码,在所述第二级预编码中使用由所述频谱管理设备确定的权重因子来调节对所述次设备向其它次设备泄露的功率的估计。
- 根据权利要求10所述的次设备,所述一个或多个处理器进一步被配置为确定所述次设备的优先级,以便所述频谱管理设备根据所述优先级来确定所述权重因子,其中,在所述次设备的优先级较高的情况下,所确定的权重因子较小。
- 根据权利要求12所述的次设备,其中,所述加权系数是由所述频谱管理设备根据所述次设备预定范围内的所有活动的同频次设备具有的优先级的数目、各优先级中次设备的数目或分布密度而确定的。
- 根据权利要求10所述的次设备,所述一个或多个处理器进一步被配置为:在进行所述第二级预编码之前,进行第一级预编码。
- 根据权利要求14所述的次设备,所述一个或多个处理器进一步被配置为:生成用于指示所述次设备能否进行第一级预编码的信息,以便所述频 谱管理设备根据所述信息确定用于所述次设备的发射功率,其中,在所述信息指示所述次设备能够进行第一级预编码的情况下,所述频谱管理设备为所述次设备确定较高的发射功率。
- 根据权利要求15所述的次设备,所述一个或多个处理器进一步被配置为:使用所述次设备对主系统中的特定主设备的第一干扰信道信息,进行所述第一级预编码;以及使用所述次设备对所述次系统中的其它次设备的第二干扰信道信息,进行所述第二级预编码。
- 根据权利要求16所述的次设备,其中,所述第一干扰信道信息和所述第二干扰信道信息是由所述频谱管理设备根据所述次设备的位置信息和发射功率并且利用信道信息数据库而确定的。
- 根据权利要求16所述的次设备,所述一个或多个处理器进一步被配置为:根据由所述频谱管理设备确定的所述特定主设备的位置相关信息和/或设备能力信息,来确定所述第一干扰信道信息;以及根据由所述频谱管理设备确定的所述其它次设备的位置相关信息和/或设备能力信息,来确定所述第二干扰信道信息。
- 根据权利要求16所述的次设备,所述一个或多个处理器进一步被配置为:使用由所述频谱管理设备确定的所述特定主设备的位置相关信息,确定所述特定主设备的设备能力信息以进行信道测量,从而确定所述第一干扰信道信息;以及使用由所述频谱管理设备确定的所述其它次设备的位置相关信息,确定所述其它次设备的设备能力信息以进行信道测量,从而确定所述第二干扰信道信息。
- 根据权利要求18或19所述的次设备,其中,所述设备能力信息包括天线阵列类型、天线视轴方位角以及天线视轴仰角。
- 根据权利要求18或19所述的次设备,其中,所述特定主设备的位置相关信息是参考点的位置信息,所述参考点是所述主系统的覆盖区域 距离所述次设备最近的位置。
- 根据权利要求16所述的次设备,所述一个或多个处理器进一步被配置为:使用所述权重因子、所述第一干扰信道信息以及所述第二干扰信道信息来解调接收到的信号。
- 一种通信系统中的干扰抑制方法,所述通信系统包括频谱管理设备、包括有多个主设备的主系统、以及包括有多个次设备的次系统,所述方法包括:向所述频谱管理设备发送每个所述次设备的位置信息;所述频谱管理设备根据接收到的所述位置信息,确定用于特定次设备的权重因子;以及进行第二级预编码,在所述第二级预编码中使用所述权重因子来调节对所述特定次设备向其它次设备泄露的功率的估计。
- 根据权利要求23所述的方法,其中,所述权重因子具有范围从0到1的值。
- 根据权利要求23所述的方法,进一步包括:向所述频谱管理设备发送每个所述次设备的优先级;以及所述频谱管理设备根据接收到的所述优先级,确定用于所述特定次设备的权重因子,其中,在所述特定次设备的优先级较高的情况下,所确定的权重因子较小。
- 根据权利要求25所述的方法,进一步包括:确定所述特定次设备预定范围内的所有活动的同频次设备具有的优先级的数目,并根据所述优先级的数目初步确定所述权重因子的值;以及根据与所述特定次设备具有相同优先级的活动的同频次设备的数目或分布密度,对初步确定的值进行调整,从而确定所述权重因子。
- 根据权利要求23所述的方法,进一步包括:在进行所述第二级预编码之前,进行第一级预编码。
- 根据权利要求27所述的方法,进一步包括:向所述频谱管理设备发送用于指示所述特定次设备能否进行第一级 预编码的信息;以及所述频谱管理设备根据所述信息确定所述特定次设备的发射功率,其中,在所述信息指示所述特定次设备能够进行第一级预编码的情况下,为所述特定次设备确定较高的发射功率。
- 根据权利要求28所述的方法,进一步包括:所述频谱管理设备根据所述特定次设备的位置信息和发射功率,使用信道信息数据库,来确定所述特定次设备对所述主系统中的特定主设备的第一干扰信道信息以及所述特定次设备对其它次设备的第二干扰信道信息,并且将所述第一干扰信道信息和所述第二干扰信道信息发送给所述特定次设备。
- 根据权利要求28所述的方法,进一步包括:所述频谱管理设备根据所述特定次设备的位置信息和发射功率,确定所述主系统中的特定主设备的位置相关信息和/或设备能力信息以及其它次设备的位置相关信息和/或设备能力信息,并发送给所述特定次设备;所述特定次设备根据所述特定主设备的位置相关信息和/或设备能力信息,确定其与所述特定主设备的第一干扰信道信息,并且根据所述其它次设备的位置相关信息和/或设备能力信息,确定其与所述其它次设备的第二干扰信道信息。
- 根据权利要求28所述的方法,进一步包括:所述频谱管理设备根据所述特定次设备的位置信息和发射功率,确定所述主系统中的特定主设备的位置相关信息以及其它次设备的位置相关信息,并发送给所述特定次设备;以及所述特定次设备根据所述特定主设备的位置相关信息,确定所述特定主设备的设备能力信息以进行信道测量,从而确定第一干扰信道信息,并且根据所述其它次设备的位置相关信息,确定所述其它次设备的设备能力信息以进行信道测量,从而确定第二干扰信道信息。
- 根据权利要求29-31中任一项所述的方法,进一步包括:所述特定次设备使用所述权重因子、所述第一干扰信道信息以及所述第二干扰信道信息,来解调接收到的信号。
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