关键词: 汇聚节点, 接收信号强度指示, 网络瓶颈, 拓扑结构

Abstract: Aimed at the weak point of the cluster head node of hierarchical wireless sensor network is easy to become a network bottleneck and restricted the network performance, this paper proposes an energy-efficient routing protocol. This paper constructs network by using multiple sink nodes and the RSSI （Received Signal Strength Indicator） to get the distance between the normal nodes and sink nodes, then divides the scope for each sink node by this distance, and uses the method of the sensor node and its sink node one-way communication to reduce the burden of cluster head node. The simulation results show the proposed routing protocol can effectively overcome the network bottleneck in cluster head, so as to reduce the energy consumption and improve the network lifetime, and this protocol has important value to that wireless sensor network applying large-scale data acquisition networks.

Key words: sink node, received signal strength indicator, network bottleneck, topology