Research on Real-Time Performance of Bandwidth Allocation for LTPB Network
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摘要: 研究LTPB(线性令牌传递总线)在通信网络中保证消息实时传输的带宽分配问题.LTPB网络带宽的分配是以保证网络消息的实时传输为目标的,网络中关键参数(一定时间内发送消息的最小量)的准确与否将关系到网络带宽分配的合理性和有效性.通过对带宽分配方法实时特性的分析,发现了当前分析方法中的不足,提出了"最差情形"的概念,并以此建立了合理的推导模型,得出了有关LTPB网络实时性分析的关键性结果,并为下一步寻求更优的带宽分配方法提供了可靠的分析基础.Abstract: The problem of guaranteeing real-time message transmission in LTPB network, linear token passing bus, has been studied. Bandwidth allocation for LTPB aims at real-time message transmission, and the key parameter, the minimum amount of time used for real-time message transmission in unit time, is an important factor to the property and validity of the bandwidth allocation. Having found out a defect in current real-time performance analysis method, we propose a concept of "the worst case situation", develop a reasonable model, get an important result in real-time performance analysis for LTPB network, and establish the analytic foundation to seek the better bandwidth allocation scheme.
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