一种改善TD-SCDMA/CDMA2000 1x双模视频传输效果的方法

针对双模视频传输时延差异带来的异步接收发生解帧错误现象和双模网络带宽不一致引起的调度问题,提出了一种有效改善TD-SCDMA和CDMA2000 1x双模无线视频传输效果的方法.该方法包括在发送端加定帧标识进行封包预处理,在接收端同步组合,同时设计了无线通信信道的协同工作和视频数据传输的调度管理.实验结果证明采用本方法后,双模视频传输系统效果已经能接近理想水平.该方法可以有效提高收端解帧的正确性和网络的可利用性,减少数据拥塞和系统时延.

A method to improve effect of TD-SCDMA and CDMA2000 1x dual-mode wireless video transmission

For solving the problem of the solution framing error phenomenon caused by asynchronous receiver of time delay differences when dual-mode wireless video are transmitted and the scheduling problems caused by the inconsistence of dual-mode network bandwidth, this paper presents an effective method to improve dual-mode wireless video transmission of TD-SCDMA and CDMA2000 1x. The method includes signing flag on initial terminal for pack preconditioning and combining synchronously on receiving end. At the same tine, team working of wireless communication channels and dispatching management of video data transmission was designed. Experimental result shows that the effect of dual-mode wireless video transmission has been improved as expectation after using the proposed method. This method can enhance the correctness of solution framing on receiving end and the exploitability of network, and reduce data congestion and system delay.