Performance Analysis of Group Paging for Machine-Type Communications in LTE Networks
Performance Analysis of Group Paging for Machine-Type Communications in LTE Networks
复制标题
DOI：
10.1109/tvt.2013.2251832
复制
发表时间：
2013-09-01
影响因子：
6.8
通讯作者：
Tsao, Shiao-Li
中科院分区：
文献类型：
--
作者：
Wei, Chia-Hung;Cheng, Ray-Guang;Tsao, Shiao-Li
机器类型通信(MTC)是下一代蜂窝网络的关键业务。MTC设备大量接入网络可能会导致无线接入网络(RAN)过载，并降低人与人之间通信的服务质量。组寻呼是为缓解RUN过载问题而提出的机制之一。基于文献中提出的递归竞争用户估计(RCE)方法，提出了一种分析模型，用于推导在寻呼接入间隔中具有不同群组大小和预留无线资源组合的群组寻呼的冲突概率、接入成功概率、平均接入时延、前导传输统计、接入时延统计以及随机接入机会(RAO)利用率等性能指标。随后，基于给定的目标接入成功概率来导出最优组大小和所需的RAO。数值结果表明，该模型能够准确地估计群组寻呼的性能。
Machine-type communication (MTC) is a crucial service for next-generation cellular networks. Mass access to the network byMTC devices may result in the overload of radio access networks (RANs) and degrade the service quality of human-to-human communication. Group paging is one of the mechanisms proposed to alleviate the RAN-overload problem. This paper presents an analytical model based on a recursive contending-users estimation (RCE) method proposed in the literature to derive the performance metrics of collision probability, access success probability, average access delay, statistics of preamble transmissions, statistics of access delay, and utilization of random-access opportunities (RAOs) for group paging with various combinations of group sizes and reserved radio resources in a paging access interval. The optimal group size and required RAOs are subsequently derived based on the given target access success probability. Numerical results demonstrate that the proposed model can accurately estimate the performance of group paging.