支持高速城域无线IP接入的双脉冲预约协议  

Double-pulse reservation protocol for high-speed metropolitan wireless IP access

作　　者：姜红旗[1] 林孝康[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2006年第4期508-511,共4页Journal of Tsinghua University(Science and Technology)

摘　　要：在IEEE 802．16无线城域网中，基于带宽请求消息的预约协议在高IP业务负载时易导致预约冲突。为此，该文提出了一种新的无竞争预约协议：用户站先通过每帧固定发送一个双脉冲信号来反映IP到达分组的个数和类型，并在随后的业务传输中捎带发送准确的带宽请求。仿真结果表明：该协议可将系统的最大吞吐量提高4％～20％，同时改善分组传输的延迟和延迟抖动性能。Reservation protocols based on bandwidth request messages are prone to collisions during beavy IP traffic load in IEEE 802. 16 wireless metropolitan area networks. A new contention-less reservation protocol was developed in which each subscriber station first uses a double-pulse signal to indicate the number and type of arrived packets in each frame and then utilizes a piggyback signal to send a more explicit bandwidth request. Simulations show that this protocol increases maximum throughput by 4% - 20% and gives better performance in packet transmission delays and delay jitter.

关 键 词：无线城域网 多址接入控制 预约协议 

分 类 号：TN915.6[电子电信—通信与信息系统]