Sink-oriented Dynamic Location Service Protocol for Mobile Sinks with an Energy Efficient Grid-Based Approach

Abstract

Sensor nodes transmit the sensed information to the sink through wireless sensor networks (WSNs). They have limited power, computational capacities and memory. Portable wireless devices are increasing in popularity. Mechanisms that allow information to be efficiently obtained through mobile WSNs are of significant interest. However, a mobile sink introduces many challenges to data dissemination in large WSNs. For example, it is important to efficiently identify the locations of mobile sinks and disseminate information from multi-source nodes to the multi-mobile sinks. In particular, a stationary dissemination path may no longer be effective in mobile sink applications, due to sink mobility. In this paper, we propose a Sink-oriented Dynamic Location Service (SDLS) approach to handle sink mobility. In SDLS, we propose an Eight-Direction Anchor (EDA) system that acts as a location service server. EDA prevents intensive energy consumption at the border sensor nodes and thus provides energy balancing to all the sensor nodes. Then we propose a Location-based Shortest Relay (LSR) that efficiently forwards (or relays) data from a source node to a sink with minimal delay path. Our results demonstrate that SDLS not only provides an efficient and scalable location service, but also reduces the average data communication overhead in scenarios with multiple and moving sinks and sources.

Images compression techniques for wireless sensor network applications

“…Due to the limited transmission range of sensor nodes, the adopted protocol appears infeasible in large scale sensor networks. To solve this problem, a multi-hop communication model is proposed in Heinzelman et al (1999), Jeon et al (2009). In this model, sensor protocols for information via negotiation (SPIN) efficiently disseminates information in a multi-hop manner is investigated.…”

Energy-efficient location services for mobile ad hoc networks

“…Yet, the location update cost in terms of hop count is still the full diameter of the network and the query cost could be nearly as high if the query enters the query column far from the intersection of this column with the update row. This method is then extended by sending query and update in non-vertical directions [6] and in multi-directions [7].…”

Impact of Broadcasting Directions in SDLS for Wireless Sensor Networks

“…In Section II, Jeon's proposed SDLS scheme would be introduced [13]. In Section III, SDLS with different number and angle would be discussed.…”

“…However, the sink has a mobility will result data loss when sensor nodes want to transmit data to sink. To efficiently transmit data to the mobile sink, many researches use virtual grid structure to detect the location of the mobile sink to send the data successfully [7][8][9][10][11][12][13]. In [13], Jeon et al proposed SDLS protocol not only to reduce the extra energy consumption in sensor networks but also to solve the problem of hotspots in Anchor Location Service (ALS) [12] protocol.…”