CAJ | 학술논문

节点能量直接影响无线传感器网络的寿命。为此,从保存节点能量角度入手,结合最大容量路径路由协议,提出基于能量感知的Sink节点移动方案EASM-INL,以最大化提高网络寿命。在EASM-INL方案中,传感节点依据电量水平调整传输范围,当电量下降时缩短传输范围,从而保存电量。 Sink节点收集传感节点的电量数据,计算最大容量路径。只要有一条路径容量值小于门限值, Sink节点就计算正东、南、北、西4个方向上的最大容量值,并沿最小值所在方向移动。仿真结果表明,与同类节点移动方案相比,EASM-INL方案可有效延长网络寿命。
절점능량직접영향무선전감기망락적수명。위차,종보존절점능량각도입수,결합최대용량로경로유협의,제출기우능량감지적Sink절점이동방안EASM-INL,이최대화제고망락수명。재EASM-INL방안중,전감절점의거전량수평조정전수범위,당전량하강시축단전수범위,종이보존전량。 Sink절점수집전감절점적전량수거,계산최대용량로경。지요유일조로경용량치소우문한치, Sink절점취계산정동、남、북、서4개방향상적최대용량치,병연최소치소재방향이동。방진결과표명,여동류절점이동방안상비,EASM-INL방안가유효연장망락수명。
Energy of nodes in Wireless Sensor Network ( WSN ) directly impacts on the network lifetime. Therefore,from the perspective of saving energy of nodes,sink node moving scheme based on energy awareness is proposed in this paper, which is marked as EASM-INL. In EASM-INL scheme, according to energy level, sensor nodes adjust the transmission range. As the slack, it shortens the transmission range in order to save electricity. In addition,sink node collects the information about energy of sensor nodes,and computes the Maximum Capacity Path ( MCP) . As long as there is a path capacity value less than the threshold,sink node is ready to move. It computes the maximum capacity path in north,south,east,west direction,and moves along the direction in minimum value. Then,it establishes theoretical derivation model and analyzes the EASM-INL scheme in term of improving the performance of network lifetime. Finally,this paper uses numerical simulation to verity the performance of EASM-INL scheme. Simulation results show that EASM-INL scheme can prolong network lifetime compared with traditional sink moving schemes.