Probabilistic resource rescheduling for C-V2X based on delivery rate estimation

IF 2.9 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

Journal of Communications and Networks Pub Date : 2024-04-01 DOI:10.23919/JCN.2024.000006

Doyeon Hyeon;Chaeyeong Lee;Heemin Kim;Sungrae Cho;Jeongyeup Paek;Ramesh Govindan

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引用次数: 0

Abstract

Vehicle-to-everything (V2X) communication is an essential component for fully autonomous vehicles in future intelligent transportation systems, and cellular-V2X (C-V2X) is a standard that allows vehicles to communicate with its surroundings using cellular technology. Among the resource allocation modes of C-V2X, Mode 4 is a distributed scheme in which each vehicle independently selects a radio resource using the sensing-based semi-persistent scheduling (SB-SPS) algorithm. However, it is susceptible to resource conflicts especially with increased vehicle density or mobility, and the conflicts cannot be detected, leading to poor performance due to collisions and interference. To address this problem, this paper proposes a delivery rate estimation based probabilistic resource re-scheduling (EB-PRS) scheme. The delivery ratio is estimated using opportunistic bloom filter-based feedback on which vehicle's messages are received successfully. Based on the estimated delivery rate, EB-PRS carefully reselects resources probabilistically to maximize performance. EB-PRS is evaluated in highway and urban scenarios using WiLabV2Xsim simulator to show that it significantly improves upon the SB-SPS by reducing packet collisions.

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基于交付率估计的 C-V2X 概率资源重新安排

车对物（V2X）通信是未来智能交通系统中完全自动驾驶车辆的重要组成部分，而蜂窝-V2X（C-V2X）是一种允许车辆使用蜂窝技术与周围环境通信的标准。在 C-V2X 的资源分配模式中，模式 4 是一种分布式方案，每辆车使用基于传感的半持久调度（SB-SPS）算法独立选择无线电资源。然而，它容易发生资源冲突，尤其是在车辆密度或移动性增加的情况下，而且冲突无法被检测到，从而导致因碰撞和干扰造成的性能低下。为解决这一问题，本文提出了一种基于交付率估计的概率资源重新调度（EB-PRS）方案。交付率是利用基于机会主义盛放滤波器的反馈来估计哪些车辆的信息被成功接收的。EB-PRS 根据估计的交付率，以概率方式谨慎地重新选择资源，以实现性能最大化。使用 WiLabV2Xsim 模拟器在高速公路和城市场景中对 EB-PRS 进行了评估，结果表明 EB-PRS 通过减少数据包碰撞，显著提高了 SB-SPS 的性能。

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来源期刊

Journal of Communications and Networks 工程技术-电信学

CiteScore

6.60

自引率

5.60%

发文量

审稿时长

14.4 months

期刊介绍： The JOURNAL OF COMMUNICATIONS AND NETWORKS is published six times per year, and is committed to publishing high-quality papers that advance the state-of-the-art and practical applications of communications and information networks. Theoretical research contributions presenting new techniques, concepts, or analyses, applied contributions reporting on experiences and experiments, and tutorial expositions of permanent reference value are welcome. The subjects covered by this journal include all topics in communication theory and techniques, communication systems, and information networks. COMMUNICATION THEORY AND SYSTEMS WIRELESS COMMUNICATIONS NETWORKS AND SERVICES.