摘要
协作中继网络可以以较低成本实现较大范围网络覆盖,因此在提升网络容量方面是一项非常有前景的技术。研究了如何在协作中继网络中通过有效的流量控制和资源分配提高系统吞吐量的问题。在基于协作中继的上行链路通信问题中,如何在移动用户之间合理地分配中继资源是保证用户服务需求以及提高网络性能的关键。利用李雅普诺夫优化理论和虚拟队列技术设计了基于放大转发(AF)中继的功率控制与流量控制相结合的控制算法,实现了最大化系统吞吐量,同时满足每个用户时均的时延限制。理论分析以及实验同时表明了上述算法的最优性和稳定性。
Cooperative relay in cellular networks is a promising and economic option to increase the network capacity and coverage at low cost.How to control flow and allocate resource efficiently to improve system throughput in cooperative relay networks is studied in this paper.In uplink communication based on cooperative relay technology,reasonable resource allocation is critical to ensure the users＇ service request and enhance network performance.In this paper,Lyapunov optimization theory and virtual queue technique are adopted to design a control algorithm based on the combination of the relay power control with amplify-and-forward strategy （AF） and flow control.The algorithm achieves maximized system throughput and meets the time-averaged delay restriction of each user at the same time.Theoretical analysis and experiment result demonstrate both the optimality and stability of the proposed algorithm.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2014年第4期880-888,共9页
Chinese Journal of Scientific Instrument
关键词
协作中继网络
资源分配
流量控制
cooperative relay network
resource allocation
flow control
作者简介
吕红芳,2006年于上海理工大学获得硕士学位,现为同济大学博士生,主要研究方向为无线通信、无线传感器网络与信息融合.E-mail：regina326@163.com｜张浩,1990于上海交通大学博士学位,现为同济大学博士生导师,主要研究方向为智能制造系统、自动控制等.E-mail：hzhangk@163.com
