Region Based Data Dissemination Scheme for Mobile Sink Groups in Wireless Sensor Networks

Abstract

In many applications of Wireless Sensor Networks (WSNs), the sensing data are disseminated from a source to multiple mobile sinks. Since WSNs consists of a number of sensor nodes with limited capabilities, previous studies mainly discuss on how to send the data efficiently and do not consider the group mobility of mobile sinks that move together staying closely and randomly move within a geographically restricted region. Although the existing multicasting protocols could be applied, they suffer from high congestion and control overhead due to location updates by individual mobile sinks. Geocasting protocols are effective for data delivery to a sink group within a restricted region, but do not guarantee since they only focus on transmitting data to all nodes within a stationary region. Therefore, we propose Region Based Data Dissemination (RBDD) scheme to address these problems. RBDD provides efficient data dissemination scheme for mobile sink groups, so it guarantees data transmission not only when a sink group does move as a whole, but also its member sinks move inside of the region or outside of it. Simulation results show that RBDD guarantees data delivery to a mobile sink group.

X-geocasting: Data dissemination to mobile sink groups in wireless sensor networks

“…In this section, we compare performances of X-Geocasting with that of two other schemes to support a mobile sink group: 1) M-Geocasting [1] that takes into account not only flooding for data dissemination to the group but also exception motion support of some member sinks going outside the flooding and 2) RBDD [2] that supports collective movement of the group by prediction of next positions of the group and floods data into the position to deliver data toward the group.…”

“…Recently, research in terms of the group mobility support of mobile sinks has been starting and several mechanisms have already been proposed such as [1], [2]. Those mechanisms commonly follow a communication strategy that simply adopts flooding.…”

“…The mobile sinks could be classified as two classes: 1) individual mobile sinks and 2) groups of mobile sinks [1], [2]. Traditionally, a large number of mechanisms for mobility support of the individual mobile sinks such as scouts and snipers have been proposed [3].…”

Reliable and energy-efficient routing protocol for mobile sink groups in wireless sensor networks

“…M-Geocasting [8], [9] has been proposed for avoiding the location information delivery from each sink to a source when it supports a mobile sink group. In M-Geocasting, if a leader sink only registers the region location information of the mobile sink group to a source, the source floods its data within the mobile sink group region.…”

“…Recently, M-Geocasting [8], [9] has been proposed for supporting both macro and micro mobility of a mobile sink group by using single entity nature. In M-Geocasting, a leader sink periodically calculates the group region location information and registers it to a source, and the source delivers its data to group sinks within the registered group region by flooding such as geocasting [4].…”