Topology Variable Routing Algorithm for WWSN in Disaster Rescue

In recent years, the Wearable Wireless Sensor Network (WWSN) has become one of the most popular disaster relief networks. On-Body network is a key part of WWSN, which is responsible for the communication between wearable wireless sensor nodes and the coordinator in WWSN. The routing algorithm for On-body network is related to the energy consumption of wearable wireless sensor nodes and even the lifetime of the network. Therefore, this paper proposes a topology variable routing algorithm (TVRA) in On-Body networks. Firstly, the algorithm designs multi-hop routing to prolong the network lifetime on the premise of energy balance under the normal state of the network. When the network is abnormal, a single hop routing is adopted to ensure that the abnormal data can be sent with the lowest delay. The simulation results show that the proposed TVRA algorithm has better performance in terms of lifetime and time delay.