李丽琴, 林亮, 李阳德, et al. Research of LTE inter-frequency handover basesd on VoLTE speech quality[J]. 2018, 31(2): 14-17. DOI: 10.13992/j.cnki.tetas.2018.02.005.
Research of LTE inter-frequency handover basesd on VoLTE speech quality
摘要
中国移动用于室外广覆盖的TD-LTE网络主要有F频段和D频段
两个频段之间的切换主要是基于覆盖的异频切换
切换前用户的RSRP和SINR会比较差
切换后会获得明显提升。前期TD-LTE网络主要承载数据业务
目前VoLTE语音业务发展迅猛
原有基于RSRP的异频切换方式已不适应语音异频切换。为了提升4G客户VoLTE语音业务感知
本文提出了一种基于VoLTE语音质量的异频切换方法。
Abstract
To China Mobile
there are two mainly bands
named as F band and D band
for TD-LTE outdoor wide area coverage. The inter-frequency handover between F band and D band is based on coverage quality
RSRP and SINR become better after handover. TD-LTE network is for data service before
but now VoLTE service grows rapidly. As a result
the inter-frequency handover based on RSRP is not applicable for inter-frequency voice handover. In order to improve the experience of 4 G VoLTE customers
this paper points out a method of inter-frequency handover based on VoLTE voice quality.