摘要
Data generated in wireless multimedia sensor networks （WMSNs） may have different importance and it has been claimed that the network exert more efforts in servicing applications carrying more important information. Nevertheless, importance of packets cannot generally be accurately represented by a static priority value. This article presents a dynamic priority based congestion control （DPCC） approach that makes two major innovations in WMSNs. First, DPCC employs dynamic priority to represent packet importance. Second, it prioritizes the local traffic of motes near the base station when WMSN is highly congested. Simulation results confirm the superior performance of the proposed approach with respect to energy efficiency, loss probability and latency as well.
Data generated in wireless multimedia sensor networks （WMSNs） may have different importance and it has been claimed that the network exert more efforts in servicing applications carrying more important information. Nevertheless, importance of packets cannot generally be accurately represented by a static priority value. This article presents a dynamic priority based congestion control （DPCC） approach that makes two major innovations in WMSNs. First, DPCC employs dynamic priority to represent packet importance. Second, it prioritizes the local traffic of motes near the base station when WMSN is highly congested. Simulation results confirm the superior performance of the proposed approach with respect to energy efficiency, loss probability and latency as well.
基金
supported by the National Natural Science Foundation of China (60973139, 60903181, 60773041 )
Special Fund for Software Technology of Jiangsu Province, the Special Foundation for Development of Modern Service Industry of Jiangsu Province, Postdoctoral Foundation (0801019C, 20090451240,20090451241)
Science&Technology Innovation Fund for higher education institutions of Jiangsu Province (CX09B_153Z, CX10B- 260Z, CX10B-261Z, CX10B-262Z, CX10B-263Z, CX10B-264Z)
the six kinds of Top Talent of Jiangsu Province (2008118)
the key Laboratory Foundation of Information Technology processing of Jiangsu Province (2010)
