| 1. | Firstly , inttoduce and analysis the reservation random access protocol ( rra ) , which is fit to the data services . then the packet reservation multiple access ( prma ) protocol is introduced , which is fit to the integrated voice / data services 首先介绍和分析了针对数据业务的预约随机接入( rra ) ,然后介绍了支持话音和数据综合业务的多址接入方法prma 。 |