Network Coding Aware Cooperative MAC Protocol for Wireless Ad Hoc Networks
Network Coding Aware Cooperative MAC Protocol for Wireless Ad Hoc Networks
复制标题
无线自组织网络的网络编码感知协作 MAC 协议
DOI：
10.1109/fcs.2014.6859885
复制
发表时间：
2014-01-01
影响因子：
5.3
通讯作者：
Tang, Feilong
中科院分区：
文献类型：
--
作者：
Wang, Xiaoyan;Li, Jie;Tang, Feilong
本文介绍了一种安装在1.2mx1.2m光学台上的铯原子喷泉钟光学系统。利用这个系统，我们将约10(8)个铯原子囚禁在磁光陷阱(MOT)中，并通过扫描询问腔的微波频率得到喷泉的拉姆齐条纹。协作通信利用相邻节点转发监听信息，是克服信道衰落、改善网络性能的一种有效技术。网络编码将多个分组组合在一起进行传输，有助于减少网络中的冗余，提高整体吞吐量。将网络编码引入到协作重传过程中，使得中继节点能够在为自己的业务提供服务的同时帮助其他节点。为了充分利用两者带来的好处，需要一种高效的媒体访问控制(MAC)协议。本文提出了一种新的网络编码感知的无线自组织网络协作MAC协议--NCAC-MAC。NCAC-MAC的设计目标是提高吞吐量和降低时延。仿真结果表明，与两种基准相比，NCAC-MAC在一般情况下能够提高网络性能。
This paper present an optical system for Cs atomic fountain clock that is located on a 1.2 mx1.2 m optical table. Taking advantage of this system, we trap about 10(8) cesium atoms in the magneto-optic trap (MOT) and get the Ramsey fringe of the fountain by scanning the microwave frequency of the interrogation cavity. The full-width at half-maximum of the central fringe (FWHM) is 1.4 HzCooperative communication, which utilizes neighboring nodes to relay the overhearing information, has been employed as an effective technique to deal with the channel fading and to improve the network performances. Network coding, which combines several packets together for transmission, is very helpful to reduce the redundancy at the network and to increase the overall throughput. Introducing network coding into the cooperative retransmission process enables the relay node to assist other nodes while serving its own traffic simultaneously. To leverage the benefits brought by both of them, an efficient Medium Access Control (MAC) protocol is needed. In this paper, we propose a novel network coding aware cooperative MAC protocol, namely NCAC-MAC, for wireless ad hoc networks. The design objective of NCAC-MAC is to increase the throughput and reduce the delay. Simulation results reveal that NCAC-MAC can improve the network performance under general circumstances comparing with two benchmarks.