基于负载均衡的MEH静态切换机制

doi:10.11959/j.issn.1000-0801.2018183

Abstract

Abstract:

Based on the MEH (mobile edge host) handover scheme proposed by ETSI (European Telecommunications Standards Institute),an improved and supplementary static handover scheme was put forward.By transferring the former C-MEH (controlling MEH) to a neighbor server with lighter load,the scheme decreased the average waiting time of a signal message at the former C-MEH site.The negative effect of bottle-neck at the former C-MEH could also be lightened.Analysis and simulation results show that the scheme can provide effective and positive supplementary to the ETSI specification in balancing network load and improving user’s satisfaction.

Key words: 5G, mobile edge computing, handover, load balancing

Haipeng LIU. A static MEH handover scheme based on load balancing[J]. Telecommunications Science, 2018, 34(7): 118-127.

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References 13

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变量名称	变量含义
m	UE所在小区本地MEH服务器下属UE数目随机变量
k	采用切换机制后从原C-MEH迁移出的UE数目随机变量
n	采用切换机制后新C-MEH所在小区本地下属UE数目随机变量
λ	采用切换机制前C-MEH处信令分组平均到达率
λ	采用切换机制后原C-MEH处信令分组平均到达率
μ	任意一个MEH服务器服务率
ρ	采用切换机制前C-MEH处平均服务强度
ρ	采用切换机制后原C-MEH处平均服务强度
d_UE	采用切换机制前信令分组在C-MEH处平均停留时延
d_UE	采用切换机制后信令分组在原C-MEH处平均停留时延
τ_i	每个UE在整个会话过程中发出的信令消息总数随机变量，且满足i∈(0,m-1)
Q	切换前在整个MEC会话中C-MEH到达信令分组总数随机变量
Q	切换后在整个MEC会话中原C-MEH到达信令分组总数随机变量
T	单个MEC会话总时长随机变量

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A static MEH handover scheme based on load balancing

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