计算机工程Issue(3)：88-91,96,5.DOI:10.3969/j.issn.1000-3428.2015.03.016
机器类型通信中随机接入信道的拥塞控制策略
Congestion Control Strategy of Random Access Channel in Machine Type Communication
摘要
Abstract
This paper proposes an improved congestion control strategy to alleviate the congestion of random access channel in radio access network of Machine Type Communication(MTC) based on 3GPP-Long Term Evolution(LTE). In order to reach the base-station’ s load balancing in the time interval and allocate the channel resources rationally,it schedules the access time of MTC devices through the base-station’ s broadcasted information,and thereby avoids access collisions caused by massive number of MTC devices access the base-station simultaneously. It also proofs that uniform distribution of the access time is the optimal choice by maximum entropy principle. Simulation experimental results show that the strategy can alleviate the channel congestion significantly and increase the random access success rate of MTC devices,reduce the delay,and thus improve the network’ s performance and guarantee the network’ s Quality of Service ( QoS) compared with Access Class Barring( ACB) strategy.关键词
机器类型通信/随机接入信道/拥塞控制/均匀分布/网络服务质量/最大熵原理Key words
Machine Type Communication( MTC)/random access channel/congestion control/uniform distribution/network Quality of Service( QoS)/maximum entropy principle分类
信息技术与安全科学引用本文复制引用
周伟,谭小彬,季海波..机器类型通信中随机接入信道的拥塞控制策略[J].计算机工程,2015,(3):88-91,96,5.基金项目
国家自然科学基金资助项目(61273090)。 （61273090）
