A Novel Mechanism to Support Mobility of Users in Wireless Sensor Networks Based on Multiple Static Sinks
Euisin Lee, Younghwan Choi, Soochang Park, Donghun Lee, Sangsik Kim, Sang‐Ha Kim · 2007
Wireless sensor networks traditionally consist of sensors perceiving data and sinks gathering the data. In addition, users receive required information from the sinks via infrastructure networks. The users, however, should receive the information from the sinks through multi hop communications of disseminated sensor nodes if such users move into the sensor networks without infrastructure networks. Unlikely, the previous works only considered mobility of sinks, which function users. Nevertheless, it is difficult for such approaches to mobility to exploit the existing data-centric routing algorithms and also for the mobile sinks to function as gateways to connect with infrastructure. To improve the shortcomings, we suggest a novel viewpoint of mobility for wireless sensor networks and propose a solution to support the mobility with multiple static sinks in this paper. The multiple static sinks, which are connected with each other via infrastructure, provide high throughput and low latency. Furthermore, they improve hotspot problems and prolong network lifetime. The proposed mechanism finally is evaluated by simulation results about throughput, latency, and network lifetime.