Sharing It My Way: Efficient M2M Access in LTE/LTE-A Networks
Sharing It My Way: Efficient M2M Access in LTE/LTE-A Networks
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DOI：
10.1109/tvt.2016.2547910
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发表时间：
2017-01-01
影响因子：
6.8
通讯作者：
Khan, Nargis
中科院分区：
文献类型：
--
作者：
Misic, Jelena;Misic, Vojislav B.;Khan, Nargis
当大量的机器对机器（M2M）终端尝试使用物理随机接入信道（PRACH）接入长期演进（LTE）/高级LTE（LTE-A）蜂窝网络时，可能导致拥塞和过载，这可能导致M2M和人对人（H2 H）终端的性能严重下降。其主要原因是用于随机接入的四次握手的固有复杂性，其非常适合于H2 H终端接入，但不适合于大规模M2M接入。在本文中，我们描述了一种用于PRACH上的并发M2M和H2 H接入的有效方案，该方案在前导码级别分离用于M2M和H2 H接入的资源，并且通过使用指定的前导码实现具有冲突避免的载波侦听多路访问（CSMA/CA）覆盖网络来避免对M2M终端使用四步握手。我们分析了H2 H和M2M流量的方案的性能，并显示了最重要的设计参数的值，使该方案能够支持并发访问的H2 H和M2M终端的性能下降很少。
When a large number ofmachine-to-machine (M2M) terminals attempt to access the Long-Term Evolution (LTE)/LTE Advanced (LTE-A) cellular network using the physical random access channel (PRACH), congestion and overload may result, which can lead to serious degradation of performance for both M2M and human-to-human (H2H) terminals. The main cause for this is the inherent complexity of the four-way handshake used for random access, which is well suited for H2H terminal access but unsuitable for massive M2M access. In this paper, we describe an efficient scheme for concurrent M2M and H2H access on the PRACH, which separates the resources for M2M and H2H access at the level of preamble codes and avoids the use of the four-step handshake for M2M terminals by implementing a carrier sense multiple access with collision avoidance (CSMA/CA) overlay network using the designated preamble codes. We analyze the performance of the scheme for both H2H and M2M traffic and show the values of the most important design parameters that enable this scheme to support concurrent access by H2H and M2M terminals with little performance degradation.