Dynamic data prioritization for quality-of-service differentiation in heterogeneous Wireless Sensor Networks
conference paper
In many applications of Wireless Sensor Networks (WSNs), heterogeneity is a common property in terms of different sensor types and different circumstances like node location, link quality, and local node density. In many applications, there are several different sensor types with entirely different Quality-ofService (QoS) requirements. The requirements may also vary over time according to the application scenario and also due to network dynamics. Different requirements appeal different approaches while forwarding sensed data through a multi-hop communication network. This paper proposes a dynamic priority assignment strategy to be used for data routing in heterogeneous WSNs aiming to fairly propagate information according to its importance and requirements. To cope with heterogeneity and dynamics, nodes in the routing path dynamically compute priorities for individual data items according to the attached QoS requirements. We apply the proposed strategy for a healthcare monitoring application scenario which consists of an ambient network and several mobile clusters of nodes in the form of Wireless Body Area Networks (WBANs). The nodes have very different requirements and WBANs show a high mobility in the network with more stringent demands. The results show a large improvement in the achieved QoS for more demanding information.
Topics
Ambient networksApplication scenarioCommon propertyData itemsData routingDynamic dataDynamic priority assignmentHealthcare monitoringHeterogeneous wireless sensor networksHigh mobilityLink qualityMobile clusterMulti hop communicationNetwork dynamicsNode densityNode locationQoS requirementsRouting pathWireless body area networkDynamicsHealth careMESH networkingNetworks (circuits)Quality of serviceSensor nodesSensorsWireless ad hoc networks
TNO Identifier
954260
ISBN
9781457700
Publisher
IEEE
Article nr.
5984911
Source title
2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2011, 2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2011, 27 June 2011 through 30 June 2011
Pages
296-304
Files
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