A Cooperative Broadcasting Method for a Sensor Network
Sensor networks and ad-hoc networks, which do not require a base station such as an access point, have a hidden node problem because nodes communicating at the same time cannot know each other's communication status. On other hand, in a wireless infrastructure network the access point manages the communication with the node using RTS (Request To Send) and CTS (Clear To Send). However, the authors cannot use the RTS/CTS method in broadcasting because the number of target nodes is not one but more than two. In this paper, they propose a broadcasting method based on RTS/CTS to avoid this problem. In this method the sender node selects the target node, and they communicate with each other.