一种基于PRMA的数话综合多址协议及其性能分析

A novel protocol for the integration of voice/data based on PRMA

无线分组交换正将成为未来移动通信的重要技术之一。事实上 ,分组话音充分利用话音的启毕 (on- off)特性能有效地提高带宽利用率。这一特性的应用最早体现在分组预约多址 (PRMA)协议中。本文提出了一种改进的基于 PRMA的数话综合 ,同样适用于无线 ATM环境的多址协议。数值结果显示 CR- PRMA具有比 PRMA及其变种更好的性能。值得指出的是 ,CR- PRMA的数据预约机制可移植到 PRMA的各变种中来提高系统整体性能。

Wireless packet switched communications will be one of the important technologies for future mobile data networks. In fact, packet voice can efficiently exploit voice on off activity to improve bandwidth utilization. Such an approach has been suggested firstly in the packet reservation multiple access (PRMA) technique. In this paper, we present a novel protocol (Collision Reduction PRMA, CR PRMA) for the integration of voice and data over PRMA, which is also suitable for wireless ATM environment. And at last, the numerical result shows that CR PRMA has a better performance than original PRMA and its variations. It is worth to mention that the reservation mechanism of CR PRMA can also be introduced into any variations of original PRMA to improve the system overall performance further.