IEEE802.16和WiMax的组网技术  

Networking Technologies Based on IEEE 802.16 and WiMAX

作　　者：王彬[1] 吕登芳[1] 马凤国[1] 

机构地区：[1]中兴通讯股份有限公司中心研究院西安研究所,陕西西安710065

出　　处：《中兴通讯技术》2006年第2期21-26,共6页ZTE Technology Journal

摘　　要：如何提高网络资源利用率和网络传输效率是无线通信领域面临的难题。作为宽带无线接入系统的标准,IEEE802.16在物理层采用正交频分复用技术和灵活的编码调制方式来提高传输速度和性能;在MAC层采用预约与竞争相结合的调度机制,以连接、服务流等与服务质量(QoS)相关的概念为基础,在入网与初始化、帧结构设计上优化设计,提高网络吞吐量,降低网络时延,使网络配置更加灵活。WiMAX基于IEEE802.16技术标准,采用点对多点(PMP)方式实现灵活组网,是宽带无线接入系统的典型应用技术。It is a difficult problem to improve the network performance and resource utilization efficiency in wireless communications. As a standard of broadband wireless access systems, IEEE 802.16 adopts Orthogonal Frequency Division Multiplexing （OFDM） and multi-modulation/coding techniques in the physical layer, combines contend and pre-contract mechanisms in the Medium Access Control （MAC） layer. Based on the QoS-related concepts such as connection and service flow, IEEE 802.16 optimizes network entry and initialization, and frame format in order to improve network throughput, reduce network delay, and increase the flexibility of network configuration. Based on IEEE 802.16, WiMAX adopts Point-to-Multipoint （PMP） network topology to realize flexible networking. It is a typical application technology for broadband wireless access systems.

关 键 词：接入控制 组网技术 点对多点 

分 类 号：TN925[电子电信—通信与信息系统]