CDMA无线分组网中新MAC协议的研究

该文在语音与数据混合的CDMA无线网络中提出了一种新的媒质访问控制（MAC）协议MSADQ（Minislot signaling Access based on double Queue)。该协议基于分布队列及冲突解决算法，通过对PN码字的有序管理，从而大大减少随机竞争的冲突，降低多址接入干扰，节省PN码码资源。提出了码字分配算法和队列管理算法，对语音和数据业务进行QoS保证。对协议的性能进行了仿真，并与其他两种预约协议进行了比较，结果表明，MSADQ／CDMA协议使用较少的PN码字却仍然有很好的性能。

The study of a new medium addess control protocol in cdma wireless packet networks

In this paper, a new packet medium access control protocol, namely, Minislot Signaling Access based on Distributed Queues protocol is proposed in voice and data integration CDMA network (MSADQ/CDMA). Through proper manage of the PN codes, the number of random competition collisions reduces greatly, the Multiple Access Interference (MAI) decreases, and the code resources are saved. Computer simulations are carried out in voice and data integration networks, and comparisons with other two reservation protocols are developed, which show that MSADQ/CDMA protocol occupies less PN codes, but still has very good performance.