基于多包接收机制的IEEE802.15.4协议性能分析

摘要IEEE 802.15.4作为无线个域网与传感器网络的协议标准为用户提供信道接入机制，其数据包的收发采用基于冲突信道模型的单包接收机制（SPR）。近年来，随着物理层信号处理技术的发展和新网络设计思路的出现，使得多包接收（MPR）成为可能,节点能够同时正确接收由多个用户发送的包而成为多包接收节点，即同时传输的数据包在特定条件下有可能被同时成功接收。多包接收机制可以减少冲突，并提高网络性能，尤其是其中的冲突分辨以及多包接收技术给解决网络中用户之间的分组冲突，带来了一条新思路。本文主要研究内容为学习IEEE 802.15.4协议及多包接收机制，学习使用NS2仿真工具实现基于MPR的IEEE 802.15.4协议，并通过仿真模型分析MPR对IEEE 802.15.4的性能影响。28664
关键词 IEEE 802.15.4 多包接收机制 NS2仿真性能分析
毕业论文设计说明书外文摘要
Title     A simulation study on IEEE 802.15.4 CSMA/CA under multi-packet reception
Abstract
As a standard protocol for wireless personal area network and sensor network, IEEE 802.15.4 provides channel access mechanism for users. It sends and receives their packets based on conflict channel model of single packet reception mechanism (SPR). In recent years, with the development of the physical layer signal processing technology and the emergence of new network design ideas, it makes multi-packet reception (MPR) as possible. Node can correctly receive packets sent by a plurality of users simultaneously to become multi-packet reception node, i.e. simultaneous transmission of data packets may be simultaneously received successfully under certain conditions. Multi-packet reception mechanisms can reduce conflict and improve network performance, in particular the conflict resolution and multi-packet reception packet technology bringing a new way to solve the conflict between network users. The main contents of this article is to learn IEEE 802.15.4 protocol and multi-packet reception mechanisms, learning to use simulation tool NS2 to achieve a simulation of IEEE 802.15.4 protocol Based on the MPR and analyze MPR performance impact on the IEEE 802.15.4 through the simulation model.
Keywords IEEE 802.15.4 Multi-Packet Reception mechanism NS2 simulation Performance analysis
目   次
1 绪论    1
1.1    无线个域网    1
1.1.1 无线个域网概述    1
1.1.2 无线个域网分类    1
1.1.3 无线个域网的关键技术    2
1.2    ZigBee技术    2
1.2.1 ZigBee标准体系    3
1.2.2 ZigBee协议栈架构    3
1.3 多包接收机制    4
1.3.1 物理层实现内容    4
1.3.2 多包接收容量    5
1.4 研究意义和研究现状    5
1.4.1 研究意义    5
1.4.2 研究现状    6
1.5 本文主要内容    6
2 IEEE 802.15.4标准    8
2.1 IEEE 802.15.4协议概述    8
2.1.1 IEEE 802.15.4网络拓扑结构    8
2.1.2 IEEE 802.15.4协议架构    9
2.2 IEEE 802.15.4 的物理层（PHY）    9
2.2.1 物理层概述    9
2.2.2 物理层频带参数    10
2.2.3 物理帧格式    11
2.3 IEEE 802.15.4 的介质访问控制层（MAC）    11
2.3.1    MAC层帧结构    11
2.3.2 超帧结构    12 基于多包接收机制的IEEE802.15.4协议性能分析:http://www.751com.cn/tongxin/lunwen_23598.html