基于基站协作的5G与NGSO星座系统间干扰规避方法研究

针对Q/V频段5G基站与非静止轨道(NGSO)卫星星座系统地球站之间的同频干扰问题,提出了一种基于5G基站协作的干扰规避方法。由多个5G基站组成基站簇,通过簇内基站间协作设置空间隔离来减缓5G基站对地球站的有害干扰。以OneWeb星座系统作为受扰系统,验证了所提方法的干扰减缓效果。结果表明,当干噪比门限值为-12.2 dB时,所提方法能够将OneWeb地球站的干扰发生概率减小30%。

Research on InterFerence Avoidance Between 5G and NGSO Constellation Systems Based on Base Station Cooperation

Aiming at the problem of co-frequency interference between base stations of 5G systems and earth stations of non-geostationary orbit(NGSO)constellation systems both deployed in Q/V frequency band,an interference avoidance method is proposed based on base station cooperation for the downlink scenario.In this method,the base station cluster is composed of multiple 5G base stations.Utilizing the cooperative access strategy between base stations,the space isolation angle is established to eliminate the harmful interference to earth stations.Taking OneWeb system as the example,the effectiveness of the proposed method is verified.The results show that when the threshold of interference to noise ratio is-12.2dB,the probability of interference occurrence of the earth station can be reduced by 30%.