A Data Delivery Mechanism to Support Mobile Users in Wireless Sensor Networks

Wireless sensor networks traditionally consists of sensors perceiving data and sinks gathering the data. In addition, users received 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. Unlike the previous works that only considered the mobility of the sinks. Nevertheless, it is difficult for such approaches about the mobility to exploit the existing data-centric routing algorithms and also for the mobile sinks to function as gateways to connect with the infrastructure. To improve the shortcomings, we suggest a novel viewpoint of mobility for wireless sensor networks and propose a novel architecture and mechanism 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.