Research And Realization Of ZigBee Routing Protocols In Voice Communication

ZigBee is a new kind of low-cost, low-power, short-range wireless communication technology, which designed for the Low-Rate Wireless Personal Area Networks (LR-WPAN). In order to solve the problem of voice communication in some special fields, where other kinds of wireless communication technology can not meet, and according to the features ofZigBee technology, which other kinds of wireless communication technology don't have, such as low-cost, high-reliability and easy-deployment of communication facilities, in this paper, a solution of voice communication will be proposed by ZigBee technology. Firstly, this paper describes the basic features of ZigBee technology, elaborates on the stack structure and key technologies of the stack structure's core network layer, such as ZigBee network topology, address assignment in the network layer, etc. In order to elaborate the features of AODVjr protocol and the advantages, disadvantages, situations of two basic routing protocols clearer, this paper simulate the performance-related of AODV protocol and AODVjr protocol, Cluster-Tree protocol and AODVjr protocol separately. Secondly, in order to make up for the shortage of network routing protocols when using ZigBee technology for voice communication, this paper improves the network access and transmission path of Cluster-Tree protocol, proposes CTNT (Cluster-Tree with the Neighbor Table) protocol, and this paper improves the RREQ packets'transmission range and forward direction of AODVjr protocol, proposes LRO-AODVjr (Low Routing Overhead-AODVjr) protocol, and indicates the feasibility and effectiveness of improvement programs by giving the network simulation results. Finally, this paper gives a solution of voice communication by ZigBee technology, designs an auxiliary acquisition board, which is used for audio signal acquisition and digital-analog conversion, matches the existing ZigBee core development board, this paper builds a simple end to end ZigBee voice communication system, which provides a design idea of the application of ZigBee technology in voice communication field.