5G室内外同频组网条件下提升室内小区流量承载比的方法  

Methods to Enhance Indoor Cell Traffic Load Ratio under 5G Indoor-Outdoor Co-frequency Networking Conditions

作　　者：杨涌 宋磊 郑志刚 YANG Yong;SONG Lei;ZHENG Zhigang(China Mobile Communications Group Zhejiang Co.,Ltd.,Hangzhou 310012,China;Zhejiang Branch of China Mobile Communications Group Design Institute Co.,Ltd.,Hangzhou 310012,China)

机构地区：[1]中国移动通信集团浙江有限公司,浙江杭州310012 [2]中国移动通信集团设计院有限公司浙江分公司,浙江杭州310012

出　　处：《移动通信》2024年第11期143-148,共6页Mobile Communications

基　　金：国家自然科学基金“全频谱认知与智能利用理论与技术”(61941102)。

摘　　要：为获得更高的频率使用效率,5G网络规划时采用室内外同频组网方式。在这种条件下,位于建筑楼宇边缘的5G终端如果驻留在室外小区,由于同频干扰问题,网络性能将严重受损。为使建筑楼宇内的5G终端尽量驻留在室内小区,采用全局信道号对5G SSB频点进行灵活设置,在保持5G载波频段不变的情况下,将5G室内外小区SSB频点差异化设置,变同频段同频点组网为同频段异频点组网,同步优化异频组网切换门限设置、配置5G室内小区重选优先级最高及相关基于优先级的重选门限,最终达到室内5G终端尽量驻留室内小区的目的。实地现网验证表明,室内外小区SSB频点及相关切换、重选参数调整后,室内小区流量承载比提升约30%,间接证明了更多的室内5G终端驻留在室内小区。因此同频段异频点组网能够在室内外同频的条件下有效提升室内小区流量承载比,为确保5G室内覆盖工程实施效果提供参考。To achieve higher frequency utilization efficiency,5G network planning adopts indoor-outdoor co-frequency networking.Under these conditions,5G UEs located at the edges of buildings,if residing in outdoor cells,can severely impair network performance due to co-frequency interference.To encourage building-located 5G UEs to reside predominantly in indoor cells,a flexible adjustment of the 5G SSB(Synchronization Signal Block)frequency points is employed using a global channel number.By maintaining the same 5G carrier frequency band,this approach differentiates the SSB frequency points of indoor and outdoor cells,transforming the network from co-frequency and co-channel to cofrequency but different channels.Concurrently,the optimization of handover thresholds for different channel networking,setting the highest reselection priority for 5G indoor cells,and adjusting related priority-based reselection thresholds are undertaken.The ultimate goal is to maximize the residence of indoor 5G UEs in indoor cells.Field verifications in live networks demonstrate that after adjusting the SSB frequency points for indoor and outdoor cells and related handover and reselection parameters,the traffic load ratio of indoor cells improved by approximately 30%.This indirectly confirms that more indoor 5G UEs reside in indoor cells.Thus,different channel networking within the same frequency band effectively enhances the indoor cell traffic load ratio under indoor-outdoor co-frequency conditions,offering a reference for ensuring the effectiveness of 5G indoor coverage projects.

关 键 词：同频组网 流量承载比 重选 切换 

分 类 号：TN929.5[电子电信—通信与信息系统]