Access optimization for machine-type communication with bursty uplink random access in cellular networks
Received date: 2015-11-26
Revised date: 2015-12-29
Online published: 2016-09-15
薛滔 , 邱玲 . 蜂窝网络中机器类设备突发上行随机接入的优化[J]. 中国科学院大学学报, 2016 , 33(5) : 669 -673 . DOI: 10.7523/j.issn.2095-6134.2016.05.014
Machine-to-machine (M2M) communication is one of the major drivers in the cellular network evolution towards 5G system. A major problem is the access congestion since massive machine type communication devices (MTCDs) initiate random access simultaneously. To increase the access success probability we divide the preamble source and distinguish new MTCDs from backlog MTCDs to reduce the estimation error.We use ACB (access class barring) strategy to optimize the number of access attempt MTCDs. Simulation results show that the proposed optimization scheme increases the access success probability while decreases the access delay.
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