基于网络协议栈模块化的802.16跨层交互管理

针对跨层设计的软件实现架构尚未成熟的问题,提出一种考虑网络协议栈模块化现象的跨层交互管理算法CLIM.该方法使用DSA机制和消息队列机制,令跨层交互的实现更加灵活,并维持了网络协议栈的良好架构.仿真表明,在CLIM中运行跨层交互的时间开销较小,且CLIM算法可与IEEE 802.16信令机制相结合,使得在802.16设备中使用多种跨层设计算法成为可能.

802.16 Cross-Layer Interaction Management Based on Modularization of Network Protocol Stack

Cross-layer interaction is an indispensable part of cross-layer design, which has been proved to greatly improve the performance of 802.16 networks. In this paper, a scheme for cross-layer interaction management (CLIM) considering the modularity of protocol stack is proposed. It has the following distinct advantages. Firstly, in CLIM, implementing cross-layer interaction is more flexible than before, because the way to access a layer's inner variable can be chosen freely, and will no longer be restricted to specific method like data sharing or signaling. Secondly, CLIM maintains the good architecture of the wireless protocol stack by using DSA and message queue mechanism to manage the cross-layer interactions. CLIM can be amalgamated with 802.16 signalling system so as to make possible the use of multiple cross-layer designs in a 802.16 terminal.