NBR承载提升小区边缘用户速率

NBR Bearer Improves Cell Edge User Rate

随着数据不限量套餐发展,使用4G网络的用户越来越多,单UE大流量用户也增多,小区承载的负荷越来越高,城区DT发现信号质量较好路段调度不满,下载速率达不到12 Mb/s,也经常接到用户投诉,反馈家里信号弱、上网体验差,尤其是用户密集区域的边缘用户感知会更差。通过开通NBR承载(Nominal bitrate for non-GBR bearers),并限制单用户最大PRB数,通过修改调度算法,将尝试满足所有UE的NBR要求,为小区边缘UE分配额外的资源。这在一定程度上提升该类用户速率,缺点是牺牲了在更好的无线电条件下可用于UE的资源量,特别是大流量用户,降低整体小区吞吐量和频谱效率。

With the development of data unlimited package,more and more users are using 4G network,more and more users are using single UE and largetraffic,and the load of the community is higher and higher. DT in urban area finds that the scheduling of sections with better signal quality is not satisfied,and the download rate is less than 12 mbps. It also often receives complaints from users,who report that the home signal is weak and the online experience is poor,especially the marginal users in user intensive areas Perception will be worse. By opening the NBR bearer(nominal bit for non GBR bearers)and limiting the maximum PRB number of a single user, by modifying the scheduling algorithm,we will try to meet the NBR requirements of all ues,allocate additional resources for cell edge ues,and to some extent improve the rate of such users. The disadvantage is that we sacrifice the amount of resources that can be used for UE under better radio conditions,especially for large traffic users,reduce the overall cell throughput and spectral efficiency.