基于GPRS网络的无线IP语音通信系统  

Wireless IP Voice Communication System Based on GPRS Network

作　　者：程伟[1] 龙昭华[1] 蒋贵全[1] 

机构地区：[1]重庆邮电大学移动通信技术重点实验室,重庆400065

出　　处：《计算机工程》2011年第14期82-84,87,共4页Computer Engineering

基　　金：国家质检总局公益性行业科研专项经费基金资助项目(10-226);重庆市科技攻关计划基金资助项目(CSTC;2007AC2053)

摘　　要：提出并实现一种基于通用分组无线业务网络的无线IP语音通信系统。该系统结合S3C2410处理器的低成本、高性能与嵌入式Linux软件系统高可靠性等优点,采用独特的双缓冲四线程语音数据处理方法和延迟可控技术,使实时语音播放更加平滑,并将总体时延控制在可接受范围内。性能分析结果表明,模块化的系统设计方法使该系统只需更换通信模块即可接入3G网络。This paper presents and realizes an IP voice system, which combines the S3C2410 processor＇s low-cost, high performance features with embedded Linux software system＇s high reliability advantages. It uses a unique way called four-threaded double-buffered voice data processing and delay-control playback technology to make real-time voice playback smoother, and time delay is controlled within an acceptable range. Performance analysis shows that the modular system design makes the system easier to access 3G networks by only replacing the communication module.

关 键 词：IP语音 G.729A算法 双缓冲 实时传输 通用分组无线业务 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]