自适应动态分组预约多址协议  

AN ADAPTIVE TRANSMISSION BASED DYNAMIC PACKET RESERVATION MULTIPLE ACCESS PROTOCOL

作　　者：李夏[1] 李建东[1] 

机构地区：[1]西安电子科技大学ISN国家重点实验室信息科学研究所,西安710071

出　　处：《电子与信息学报》2002年第12期1737-1742,共6页Journal of Electronics & Information Technology

基　　金：863计划(863-317-03-03-99);国家自然科学基金(No.69872028)

摘　　要：该文提出一种基于自适应传输的动态分组预约多址协议。用来在业务量和信道都时变的环境下,灵活、高效地支持需要各种不同质量需求的无线多媒体通信。在这个方案中根据特点不同将空闲时隙分为“自由”、“长可用”或“短可用”三种。以“自由”时隙数目作为系统实时业务量的判决标准,根据系统实时业务量分别采用不同的多址接入策略,将长数据和短数据安排在语音传输的空隙传输。同时采用了自适应传输体制来进一步提高系统性能。仿真实验表明,通过合理选择系统参数,可以有效地增加系统总容量。This paper proposes an adaptive transmission based dynamic packet reservation multiple access protocol for flexible and efficient support of multimedia services with different quality of services under dynamically changing traffic and channel condition. In this scheme, all idle slots are classified as Free, Long Available and Short Available. Long and short messages can be transmitted in idle period of voice traffic. At the same time, protocol can adjust dynamically according to the number of Free slot the criterion of instantaneous traffic and adaptive transmission scheme is used to increase system efficiency further. Computer simulation confirms that the proposed system with perfectly selected parameters is effective in achieving larger capacity of multimedia communication systems.

关 键 词：自适应 动态 分组预约多址协议 自适应传输 无线多媒体通信 

分 类 号：TN919.85[电子电信—通信与信息系统]