5G语音时延优化研究

Research on 5G Voice Delay Optimization

5G网络部署初期采用EPS Fallback方案回落到4G,然后利用VoLTE提供语音服务。EPS Fallback涉及IMS、5GC、EPS等领域,流程长、时延大。主要研究如何通过网络优化来缩短5G语音呼叫建立时延。通过对“E2E呼叫建立时延”指标分析优化中所用的到主要方法进行提炼和总结,从信令流程和参数着手,借助信令跟踪信息进行全面优化来缩短呼叫建立时延,为后续5G语音时延优化提供指导意见。

At the initial stage,5G network adopts EPS Fallback scheme to fall back to 4G,and then VoLTE is used to provide voice services.EPS Fallback involves IMS,5GC,EPS and other fields,which has long process,long delay.It mainly studies how to shorten the 5G voice call establishment delay through network optimization.By refining and summarizing the main methods used in the analysis and optimization of the"E2E call establishment delay"index,starting from the signaling process and parameters,the overall optimization is carried out with the help of signaling tracking information to shorten the call establishment delay,which provides guidance for the subsequent 5G voice delay optimization.