Qos In Wireless Sensor Networks – Survey

Sensor networks are distributed networks made up of small sensing devices equipped with processors, memory, and short-range wireless communication. They differ from traditional computer networks in that they have resource constraints, unbalanced mixture traffic, data redundancy, network dynamics, and energy balance. Work within wireless sensor networks (WSNs) Quality of service (QoS) has been isolated and specific either on certain functional layers or application scenarios. However the area of sensor network quality of service (QoS) remains largely open. In this paper we examine and discuss the requirements, challenges of handling of QoS traffic and open research issues on QoS management in WSN and the various approaches for obtaining the QoS in WSN.