Load Shedding In Mobile Systems Using Mobiqual
In location-based mobile continual query (CQ) systems, the two key measures of quality-ofservice (QoS) are freshness and accuracy. To achieve freshness the CQ server must perform frequent query reevaluations. To attain accuracy the CQ server must receive and process frequent position updates from the mobile nodes. However, it is often difficult to obtain fresh and accurate CQ results simultaneously due to limited resources in computing and communication and fast-changing load conditions caused by continuous mobile node movement. Hence, a key challenge for a mobile CQ system is to achieve the highest possible quality of the CQ results in both freshness and accuracy with currently available resources. In this paper we formulate this problem as a load shedding one and develop MobiQual-a QoS-aware approach to ..............>>>>> Read More