LTE中适用于MBSFN的自适应资源分配机制

doi:10.3969/j.issn.1001-2400.2012.05.022

J4 ›› 2012, Vol. 39 ›› Issue (5): 126-131+191.doi: 10.3969/j.issn.1001-2400.2012.05.022

LTE中适用于MBSFN的自适应资源分配机制

张天魁^1,2;蒋傲雪³;冯春燕^1,2

(1. 北京邮电大学信息与通信工程学院，北京 100876；
2. 网络体系构建与融合北京市重点实验室，北京 100876;
3. 信元公众信息发展有限责任公司，北京 100101)

收稿日期:2011-07-14 出版日期:2012-10-20 发布日期:2012-12-13
作者简介:张天魁(1980-)，男，讲师，博士，E-mail: zhangtiankui@bupt.edu.cn．
基金资助:
国家科技重大专项资助项目(2010ZX03003-001-01);中央高校基本科研业务费专项资金资助项目

Adaptive resource allocation scheme for MBSFN transmission in LTE

ZHANG Tiankui^1,2;JIANG Aoxue³;FENG Chunyan^1,2

(1. School of Information and Communication Engineering, Beijing Univ. of Posts and Telecoms, Beijing 100876， China;
2. Beijing Key Lab. of Network System Architecture and Convergence, Beijing 100876， China;
3. China Telecom Information Development Co., LTD., Beijing 100101， China)

Received:2011-07-14 Online:2012-10-20 Published:2012-12-13

摘要/Abstract

摘要：

提出了一种适用于长期演进(LTE)系统多播广播单频网传输方式的自适应资源分配机制，考虑多播业务的资源需求和信道情况决定每个子帧上传输的业务类型．在每个资源分配周期内，通过估计系统内多播业务所需的子帧比例，选定相应的信干噪比门限;通过门限判决并考虑多播业务所需资源分配情况，自适应地实现多播业务和单播业务间的子帧分配．仿真结果表明，所提机制在保证多播业务速率的同时，可以提高单播业务吞吐量，优化了系统无线资源的利用率．

关键词: 长期演进系统, 多播广播单频网, 多播业务, 资源分配

Abstract:

In the LTE systems, the multicast and broadcast single frequency network (MBSFN) transmission mode is defined for multimedia services. An adaptive resource allocation scheme for LTE systems with MBSFN transmission mode is proposed, in which the sub-frame is allocated according to the required radio resource of multicast traffic and the channel condition. In each resource allocation interval, the sub-frame ratio required by the multicast traffic is estimated and then a single plus interference and noise ratio threshold is given based on the estimated sub-frame ratio; the sub-frame is allocated adaptively to the multicast traffic or the unicast traffic based on the threshold decision and the allocated resource of the multicast traffic as well. Simulation results show that the proposed scheme can guarantee the data rate of the multicast traffic and improve the throughput of the unicast traffic, so the radio resource utility of the system is optimised.

Key words: LTE, multicast and broadcast single frequency network, multicast traffic, resource allocation

张天魁;蒋傲雪;冯春燕. LTE中适用于MBSFN的自适应资源分配机制[J]. J4, 2012, 39(5): 126-131+191.

ZHANG Tiankui;JIANG Aoxue;FENG Chunyan. Adaptive resource allocation scheme for MBSFN transmission in LTE[J]. J4, 2012, 39(5): 126-131+191.

参考文献

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LTE中适用于MBSFN的自适应资源分配机制

Adaptive resource allocation scheme for MBSFN transmission in LTE

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