CAJ | 학술논문

对贪婪型周边无状态路由协议加以改进。在报头中加入邻居节点的移动速度和方向信息，当节点转发过程遭遇路由空洞时，据此信息预测邻居节点下一时刻的位置。若预测位置不符合贪婪转发要求，仍继续周边转发模式，否则，进入“等待转发模式”，即经过一个极小的等待时延后，跳转回到贪婪转发模式，以减少周边转发过程存在的大量冗余。借助仿真软件Network Simulator version 2搭建网络环境，对改进协议与原协议在节点速度为10～40 m／s的情况下仿真，比较其端到端时延和平均跳数，结果显示，改进协议在给定环境中能够降低时延5％～17％，减少跳数5％左右。
대탐람형주변무상태로유협의가이개진。재보두중가입린거절점적이동속도화방향신식，당절점전발과정조우로유공동시，거차신식예측린거절점하일시각적위치。약예측위치불부합탐람전발요구，잉계속주변전발모식，부칙，진입“등대전발모식”，즉경과일개겁소적등대시연후，도전회도탐람전발모식，이감소주변전발과정존재적대량용여。차조방진연건Network Simulator version 2탑건망락배경，대개진협의여원협의재절점속도위10～40 m／s적정황하방진，비교기단도단시연화평균도수，결과현시，개진협의재급정배경중능구강저시연5％～17％，감소도수5％좌우。
An improvement to the greedy perimeter stateless routing protocol is proposed by adding the moving speed and direction of adjacent node to the header .According to the added in‐formation ,the next location of an adjacent node can be predicted ,as the forwarded node is suffer‐ing routing empty .If the predicted position does not match with the requirement of a greedy for‐warding ,it goes on with the perimeter forwarding mode ,otherwise ,it goes into a waiting mode , which means ,after a minimal waiting time delay ,it jumps back to the greedy forwarding mode , thus a large amount of redundancy in perimeter forwarding can be reduced .With simulation soft‐ware Network Simulator version 2 ,a network environment is set up ,in which ,the end‐to‐end delay and the average hop count of the improved protocol and the original protocol is compared as the node speed varies in 10 ~ 40 m/s .Results show that ,the improving methods can bring an reduce to the time delay of 5% ~ 17% ,and to the hop of 5% around .