Multipath Routing Method for Supporting QoS and Improving Energy Efficiency in WMSNs

摘要

QoS support is essential for differentiated data processing according to types and characteristics of traffics occurred from various applications such as environment monitoring, disaster control and data collection as well as efficient use of energy in order to transmit the multimedia data in Wireless Multimedia Sensor Network (WMSNs). This paper proposes a multipath routing method which may extend the life time of the whole network by supporting QoS of WMSNs and improving the energy efficiency. The proposed multipath routing method sets the path considering the distance to sink node, remaining energy of node and link quality. In addition, setting the path according to characteristics of packet in order to support the differentiation of service for guaranteeing QoS is based on the path cost. The proposed method improve the energy efficiency while securing the reliability by enhancing the packet transmission rate, reducing the packet loss rate and delay time preventing the concentration of energy consumption through the multipath and subsequent reorganization of the path.