%0 Journal Article %A Jae Keun Park and Sung Je Hong and Kyong Hoon Kim and Tae Heum Kang and Wan Yeon Lee %D 2010 %J International Journal of Electronics and Communication Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 41, 2010 %T A Lifetime-Guaranteed Routing Scheme in Wireless Sensor Networks %U https://publications.waset.org/pdf/14461 %V 41 %X In this paper, we propose a routing scheme that guarantees the residual lifetime of wireless sensor networks where each sensor node operates with a limited budget of battery energy. The scheme maximizes the communications QoS while sustaining the residual battery lifetime of the network for a specified duration. Communication paths of wireless nodes are translated into a directed acyclic graph(DAG) and the maximum-flow algorithm is applied to the graph. The found maximum flow are assigned to sender nodes, so as to maximize their communication QoS. Based on assigned flows, the scheme determines the routing path and the transmission rate of data packet so that any sensor node on the path would not exhaust its battery energy before a specified duration. %P 871 - 875