C-RAN架构网络中基于分组调度的直接通信机制

针对现有技术应用到集中式/协作式/云计算无线接入网(centralized,cooperative,cloud radio accessnet work,C-RAN)中不能充分利用其集中式管理特性,从而造成无线资源利用率较为低下的问题,研究了C-RAN架构下的直接通信(devicetodevice,D2D),提出了一种基于分组调度的直接通信机制,该机制利用C-RAN架构网络中基带资源处理池共享移动终端信息的特性,通过移动终端的位置信息直接计算用户之间的距离,并与设定的门限值比较,以确定是否建立直接通信并根据判断结果建立通信链路?仿真结果表明,C-RAN架构网络采用直接通信方式,系统吞吐量增加了7.2%,用户连接数提高了6.4%?

Packet scheduling based on the mechanism for direct communication in C-RAN wireless networ

Direct communication(device to device,D2D) can solve the problem of low utilization ratio of wireless resource in C-RAN wireless network as the existing technology cannot make full use of the characteristic of centralized management for C-RAN(centralized,cooperative,cloud radio access network,C-RAN) in C-RAN wireless network.This paper proposes a mechanism based packet scheduling for direct communication,the mechanism takes advantage of mobile terminal in formation shared in baseband resource pool in C-RAN wireless network,through the position information of mobile terminal directly calculates the distance between users and compares with the setting threshold to determine whether to establish direct communication,then establishes a communication link according to the results of the judgment.The simulation results show that the throughput can increase by 7.2% and the number of users that wireless network can connect at the same time can increase by 6.4% in C-RAN wireless network with direct communication.