一种点对多点红外通信协议设计与实现

介绍一种基于转发机制的点对多点红外线通信协议设计方法。该方法采用采用轮询方式实现一个主控节点和多个从节点无线通信，当主控节点与某个从节点不能直接通信时，主控节点会选择一个能与之双方直接通信的第三方节点，通过第三方节点转发数据实现二者通信。数据传输时，节点与节点之间采用发送确认帧和超时重发策略。实验并在智能家居系统中验证了该协议能实现半径30m范围无线传感器节点数据可靠传输。

A point-to-multipoint design and implement of infrared communication protocol

This paper presents a point-to-multipoint which based on forwarding mechanism design method of infrared communication protocol. The polling mode was adopted to achieve a master node and multiple slave nodes wireless communication. When the master node and a slave node can not communicate directly, then the master node will select a third party node which can directly communicate with those two nodes. Communication between the two nodes by the selected node forward data. Confirm frame transmission and overtime retransmission are adopted to ensure reliable data transmission between nodes. Through the experiments and in the practice of the intelligent home system show that this protocol can be achieved wireless sensor nodes within the radius of 30m data transmission.