硬实时系统的通信协议  

COMMUNICATION PROTOCOLS FOR HARD REAL TIME SYSTEMS

作　　者：庞丽萍 田亚敏[1] 李胜利[1] 韩宗芬[1] 

机构地区：[1]华中理工大学计算机科学与技术学院,武汉430074

出　　处：《小型微型计算机系统》2000年第4期393-396,共4页Journal of Chinese Computer Systems

基　　金：国防预研项目资助

摘　　要：硬实时网络通信研究的重点在于对每个报文的时间限制的保证 .实时通信协议所采用的报文保证策略分为两类 :有保证 (guarantee)策略和尽力保证 (best- effort)策略 .前者保证报文的期限能够得到满足 ,而后者尽量使报文在期限到达前得到传送 .根据具体应用环境的不同 ,这些策略有很多变体 .In the hard real time communication domain, concern focuses on satisfying the time constraints of individual messages. The strategies adopted by these protocols fall into two classes: the guarantee strategy and the best effort strategy. In the former, messages are guaranteed to meet their deadlines. In the best effort strategy, the network will attempt to send messages before their deadlines, but no guarantees are given. Within these strategies, there are many variations due to the application environments.

关 键 词：硬实时系统 MAC协议 局域网 通信协议 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]