ALIVE-IN-RANGE MEDIUM ACCESS CONTROL PROTOCOL TO MINIMIZE DELAY IN UNDERWATER WIRELESS SENSOR NETWORK COMMUNICATION AT A FREQUENCY OF 2.4 GHz

Abstract

Time synchronization between the sensor nodes to reduce end to end delay for critical and real time data monitoring can be achieved by cautiously monitoring the mobility of the mobile sink node in underwater wireless sensor networks. The proposed Alive-in-Range (AR-MAC) medium access control protocol monitors delay sensitive, critical and real time data. The idea evolves as a reduction in duty cycle, precise time scheduling of active/sleep cycles of the sensors, monitoring the mobility of the sink node along-with the selection of appropriate queues and schedulers can reduce the end to end delay enhancing other performance metrics too. The algorithms effective path determination and optimum throughput path determination are proposed. It is assumed that the sensors are properly anchored to limit their movement due to waves within the permissible limits to follow these algorithms. This paper attempts to utilize electromagnetic waves at resonance frequency of 2.4 GHz for underwater communication. The results verify that the implementation of Alive-in-Range MAC protocol has reduced the average end to end delay significantly making it appropriate for critical and real time data monitoring. This work proves the suitability of electromagnetic waves as an effective alternative for underwater wireless communication. The main objective is to mitigate sink neighbourhood problem, distance constrained mobile sink problem and to reduce the average end to end delay by implementing Alive-in-Range (AR-MAC) medium access control protocol in underwater sensor networks and to draw the attention of researchers in this area.

Keywords

• Underwater wireless sensor network
• Mobile sink
• Queue
• Scheduler
• Alive-in-Range MAC
• Effective path determination
• Optimum throughput path determination