CAJ | 학술논문

针对AOMDV路由协议中，以跳数作为路径选择标准不能提供足够稳定的链路，使得路由的整体开销较大的问题，提出基于链路生存时间的AOMDV协议（LET-AOMDV）。该协议中每个节点通过GPS获取移动的速度和方向，计算链路持续时间，同时根据牛顿插值公式估算出节点剩余能量所能使用的时间，选择路由有效时间最长的路径，从而提高链路的稳定性。NS2仿真结果表明，与AOMDV协议及MP-AOMDV协议相比，采用LET-AOMDV协议能够减少路由请求次数，降低路由开销，减少时延，同时增加网络的吞吐率。
침대AOMDV로유협의중，이도수작위로경선택표준불능제공족구은정적련로，사득로유적정체개소교대적문제，제출기우련로생존시간적AOMDV협의（LET-AOMDV）。해협의중매개절점통과GPS획취이동적속도화방향，계산련로지속시간，동시근거우돈삽치공식고산출절점잉여능량소능사용적시간，선택로유유효시간최장적로경，종이제고련로적은정성。NS2방진결과표명，여AOMDV협의급MP-AOMDV협의상비，채용LET-AOMDV협의능구감소로유청구차수，강저로유개소，감소시연，동시증가망락적탄토솔。
In AOMDV routing protocol,taking the number of hops as the selection criteria of routing path cannot provide the link with sufficient stability,which makes the overall cost of the route increase.To solve this problem,we propose a new AOMDV routing protocol which is based on link expiration time.Each node in the protocol obtains its speed and direction of movement through GPS,calculates the duration of link,and meanwhile estimates the remained time for residual energy of itself with Newton’s interpolation formula,then selects the path with longest effective routing time so as to improve the stability of the link.NS2 simulation results show that compared with AOMDV protocol and MP-AOMDV protocol,to use LET-AOMDV protocol can decrease the number of routing requests,reduce the routing overhead, shorten the latency and increase the network throughput at the same time.