In sorne special fields such as military、emergency rescue、disaster relief、anti-terrorism ,voice communications without infrastructure are really needed. This paper combines technologies of Ad Hoc network、 embedded system and multimedia development to complete a set of voice communication system, which includes control center and Ad Hoc embedded terminals. By means of selecting the route based on stable link and RTP real time transporting, the latency and jitter were effectively decreased to guarantee the QoS (quality of service) of the voice communication system. Field tests show that this system is easy to build and strongly adaptive to mobility. The performance of the system is stable, and voice communication is generally fluent. All of these meet the design requirements.%军事、治安、抢险等特殊领域在无通信基础设施情况下对语音通信有着迫切需求.通过结合Ad Hoc网络、嵌入式系统、多媒体开发技术完成了一套具有控制中心和Ad Hoc嵌入式终端的语音通信系统.通过将基于稳定链路的路由选择与RTP实时传输相结合,有效控制了系统的时延和抖动,保证了语音通信系统的语音传输质量.实地测试实验表明,该系统易于构建、移动适应性强,语音通信话音基本流畅,性能稳定,满足设计需求.
展开▼
