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Dynamic RACH Partition for Massive Access of Differentiated M2M Services
Du, Qinghe Li, Wanyu Liu, Lingjia Ren, Pinyi Wang, Yichen Sun, Li
Du, Qinghe
Li, Wanyu
Liu, Lingjia
Ren, Pinyi
Wang, Yichen
Sun, Li
Citations
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Abstract
In machine-to-machine (M2M) networks, a key challenge is to overcome the overload problem caused by random access requests from massive machine-type communication (MTC) devices. When differentiated services coexist, such as delay-sensitive and delay-tolerant services, the problem becomes more complicated and challenging. This is because delay-sensitive services often use more aggressive policies, and thus, delay-tolerant services get much fewer chances to access the network. To conquer the problem, we propose an efficient mechanism for massive access control over differentiated M2M services, including delay-sensitive and delay-tolerant services. Specifically, based on the traffic loads of the two types of services, the proposed scheme dynamically partitions and allocates the random access channel (RACH) resource to each type of services. The RACH partition strategy is thoroughly optimized to increase the access performances of M2M networks. Analyses and
simulation demonstrate the effectiveness of our design. The proposed scheme can outperform the baseline access class barring (ACB) scheme, which ignores service types in access control, in terms of access success probability and the average access delay.
Description
Date
2016-03-30
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Publisher
Multidisciplinary Digital Publishing Institute
Research Projects
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Keywords
M2M communications, Overload control, Preamble partition, Access success probability, Average access delay
Citation
Du, Q.; Li, W.; Liu, L.; Ren, P.; Wang, Y.; Sun, L. Dynamic RACH Partition for Massive Access of Differentiated M2M Services. Sensors 2016, 16, 455.