基于窄带电台的无线AAL2传输及组网技术

摘要

提出了一种基于窄带电台的无线AAL2传输及组网方案，在双向带宽19200bps的信道下，实现了压缩语音和数据的同时组网传输。针对窄带信道的特性，提出采用AAL2适配来满足语音的实时性，提出增长信元技术和带宽自适应技术来提高数话同传时的带宽利用率，较好地解决了语音数字业务跨电台传输组网的QoS问题。给出了窄带电台无线ATM组网方案和数话同传的带宽自适应程序流程。%The paper proposes an AAL2 wireless transmission and networking scheme based on narrowband radios. In a 19200bps two-way channel, compressed voice and data can be transferred in ATM network simultaneously. To transmit voice in real time, AAL2 is adopted by narrowband radios. Besides, extended cell and bandwidth adaptive technologies are proposed to obtain better bandwidth utilization. The QoS problem in data and voice transmission between radios can be solved better when the proposed scheme is applied. The ATM networking scheme based on narrowband radio as well as the program flow of transmitting voice and data with adaptive bandwidth are presented.