Overload control of massive random access for machine-type communications

作者：

Highlights：

• We show that random access retransmissions can lead to performance degradation.

• A Markov model is proposed to evaluate the performance of LTE random access.

• There is an optimal number of retransmissions for massive random access.

• Random access resources are separated into two subsets for MTC overload control.

• Conventional and proposed schemes can be used adaptively depending on traffic load.

摘要

•We show that random access retransmissions can lead to performance degradation.•A Markov model is proposed to evaluate the performance of LTE random access.•There is an optimal number of retransmissions for massive random access.•Random access resources are separated into two subsets for MTC overload control.•Conventional and proposed schemes can be used adaptively depending on traffic load.

论文关键词：Machine-type communications (MTC),LTE random access,Overload control,Markov chain

论文评审过程：Received 21 February 2017, Revised 22 May 2017, Accepted 11 June 2017, Available online 23 June 2017, Version of Record 12 July 2017.

论文官网地址：https://doi.org/10.1016/j.eswa.2017.06.018