CAJ | 학술논문

移动Ad Hoc网络组播路由协议MAODV中,组播树在节点移动速度较快的情况下会频繁重构,使得路由开销、传输时延显著增大.针对基于邻居节点变化率的稳定路径选择方法,提出一种新的节点邻居变化率的检测机制,不需要周期性地发送Hello消息,并在此基础上设计和仿真实现了基于稳定路径的MAODV协议SP-MAODV,新协议选择的路径稳定性好且跳数小.最后从数据分组传输成功率、路由开销、平均端到端时延和时延抖动四个方面对两个协议进行了仿真比较,结果表明SP-MAODV协议减少了路径中断概率,提高了协议性能.
이동Ad Hoc망락조파로유협의MAODV중,조파수재절점이동속도교쾌적정황하회빈번중구,사득로유개소、전수시연현저증대.침대기우린거절점변화솔적은정로경선택방법,제출일충신적절점린거변화솔적검측궤제,불수요주기성지발송Hello소식,병재차기출상설계화방진실현료기우은정로경적MAODV협의SP-MAODV,신협의선택적로경은정성호차도수소.최후종수거분조전수성공솔、로유개소、평균단도단시연화시연두동사개방면대량개협의진행료방진비교,결과표명SP-MAODV협의감소료로경중단개솔,제고료협의성능.
The multicast tree in MAODV is reconstructed frequently because of the nodes mobility, making the cost of routing and delay of transmission increase significantly. The neighbor change ratio based stable path selection method was proposed to overcome the shortcomings. And a new neighbor change ratio calculation method was put forward, which did not need to send Hello messages timely. Based on this new method, a stable path based MAODV (SP-MAODV) multicast routing protocol was given with a stable path selection and less hops. The simulation results on data packet transmission rate, routing overhead, average end-to-end delay and delay jitter show that the new protocol reduces interruption probability of the path and improves performance of the protocol.