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服务发现能力是有效应用无线传感器网络的基本要求.提出基于团体的无线传感器网络服务发现协议GSDP,根据传感器节点的运动特性将网络划分为多个团体,每个团体由一个团体头节点和多个成员节点组成.团体头节点构成一个分布式服务目录,负责处理服务注册信息和服务请求信息,避免在网络范围内产生大量的广播信息.仿真实验表明,在具有团体移动特性的传感器网络中,GSDP在保证服务发现性能的同时,能够有效地减少服务发现过程的消息开销.
Service discovery capability is the basic requirement of effective application of WSNs.A group-based WSDP is proposed, which divides the network into several groups according to the movement characteristics of sensor nodes, each group consists of a group head node and multiple Member nodes.Group head nodes form a distributed service directory, which is responsible for processing service registration information and service request information, to avoid generating a large number of broadcast information in the network.Experimental results show that in the sensor network with group mobility, GSDP While ensuring service discovery performance, it can effectively reduce the message overhead of service discovery process.