Dynamic Resource Allocation and Access Class Barring Scheme for Delay-Sensitive Devices in Machine to Machine (M2M) Communications.
Dynamic Resource Allocation and Access Class Barring Scheme for Delay-Sensitive Devices in Machine to Machine (M2M) Communications.
复制标题
机器对机器 (M2M) 通信中延迟敏感设备的动态资源分配和访问类别限制方案
DOI：
10.3390/s17061407
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发表时间：
2017-06-15
期刊：
影响因子：
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通讯作者：
Wang C
中科院分区：
文献类型：
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作者：
Li N;Cao C;Wang C
支持机器类型设备的同时访问是机器对机器（M2M）通信中的关键挑战。在本文中，我们提出了一个最佳方案，动态调整接入类限制（ACB）的因素和随机接入信道（RACH）资源的数量集群机器对机器（M2M）通信，其中延迟敏感（DS）设备与延迟容忍（DT）的共存。在M2M通信中，由于延迟敏感设备与延迟容忍设备共享随机接入资源，因此减少延迟敏感设备消耗的资源意味着将有更多的资源可用于延迟容忍设备。我们的目标是优化随机接入方案，使其既能满足延迟敏感设备的要求，又能兼顾延迟容忍设备的通信质量。我们讨论了这个问题，从延迟敏感的服务的角度来看，通过动态调整这些设备的资源分配和ACB计划。仿真结果表明，我们提出的方案实现了良好的性能，在满足延迟敏感的服务，以及增加分配给他们的随机接入资源的利用率。
Supporting simultaneous access of machine-type devices is a critical challenge in machine-to-machine (M2M) communications. In this paper, we propose an optimal scheme to dynamically adjust the Access Class Barring (ACB) factor and the number of random access channel (RACH) resources for clustered machine-to-machine (M2M) communications, in which Delay-Sensitive (DS) devices coexist with Delay-Tolerant (DT) ones. In M2M communications, since delay-sensitive devices share random access resources with delay-tolerant devices, reducing the resources consumed by delay-sensitive devices means that there will be more resources available to delay-tolerant ones. Our goal is to optimize the random access scheme, which can not only satisfy the requirements of delay-sensitive devices, but also take the communication quality of delay-tolerant ones into consideration. We discuss this problem from the perspective of delay-sensitive services by adjusting the resource allocation and ACB scheme for these devices dynamically. Simulation results show that our proposed scheme realizes good performance in satisfying the delay-sensitive services as well as increasing the utilization rate of the random access resources allocated to them.