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An improved geographical routing protocol and its OPNET-based simulation in VANETs

机译：改进的地理路由协议及其基于OPET的VANET仿真

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In this paper, based on an in-depth analysis of Geographical Routing Protocol (GRP), especially its next hop selection, we present an improvement for the strategy of next hop selection with a joint consideration of distance factor and hierarchical quadrant. Based on the next hop selection strategy, an Improved Geographic Routing Protocol (IGRP) has also been proposed in this paper, which has a higher chance to deliver packets to the destinations. In order to evaluate the performance of IGRP, a VANET simulation platform is constructed by OPNET and VanetMobiSim simulators, in which VanetMobiSim is responsible for generating traffic data, and OPNET is in charge of simulating GRP and IGRP in different scenarios based on IEEE 802.11p technology. The simulations results show that IGRP can significantly improve the performance with respect to average delivery ratio, average number of hops, total backtracking number and average delay compared with the original GRP algorithm.
机译：本文基于地理路由协议（GRP）的深入分析，特别是其下一跳选择，我们对下一跳选择的策略提高了与距离因子和分层象限的联合考虑的改进。基于下一跳选择策略，本文还提出了一种改进的地理路由协议（IGRP），该方法具有更高的机会向目的地提供数据包。为了评估IGRP的性能，由OPNET和Vanetmobisim模拟器构建VanetMobisim模拟器，其中vanetmobisim负责生成流量数据，并且OPNET基于IEEE 802.11p技术的不同方案中的模拟GRP和IGRP。 。模拟结果表明，与原始GRP算法相比，IGRP可以显着提高相对于平均传递比率，平均跳跃，总回溯数量和平均延迟的性能。

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