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A Data Dissemination System towards Improving Channel Efficiency

A Data Dissemination System towards Improving Channel Efficiency
Translated Title
채널의 효율성 개선을 위한 데이터 보급 시스템
Ko, Byung Jin
DGIST Authors
Ko, Byung Jin; Son, Sang Hyuk; Lee, Haeng Ju; Son, Joon Woo
Son, Sang Hyuk
Lee, Haeng Ju; Son, Joon Woo
Issue Date
Available Date
Degree Date
2016. 2
data disseminationRSU cooperationschedulinghybrid of I2V and V2V communications데이터 보급노변장치간 협업스케줄링차량간 통신과 차량과 노변장치간의 통신의 동시 사용
Recent advancement of wireless communication technology in vehicular ad-hoc networks(VANETs) is expected to make various driving-related applications, which are envisioned by people, come true in near future. Data dissemination plays an important role to enable the emerging applications. Nevertheless, due to the limited bandwidth resource and the dynamic traffic feature, it is challenging to provide efficient data services in VANETs. In this work, we present a data dissemination system based on a hybrid of infrastructure-to-vehicle (I2V) and vehicle-to-vehicle(V2V) communications and a cooperation among multiple roadside units (RSUs) on a two-way roadway. The primary objective is to best explore the channel efficiency for both I2V and V2V communications and offload workloads of RSUs so that the system performance on data service can be maximized. To this end, we propose and integrate three approaches to enhance channel utilization and offload the workloads of RSUs. Specifically, in RSU’s coverage, data items are disseminated via the hybrid of I2V and V2V communications. For the vehicles travelling out of the RSU’s coverage, certain vehicles will be designated by RSUs to provide data services via V2V communication, which are called server-vehicles. Finally, RSUs located at different spots are designed to cooperate with each other for I2V data dissemination and a server-vehicle designation. An extensive performance evaluation demonstrates that the algorithm which combines the above three approaches can achieve higher service ratio, lower service delay, and higher fairness compared with the most competitive solution in the literature. ⓒ 2016 DGIST
Table Of Contents
I. Introduction 1 -- II. Related Work 5 -- III. Data Dissemination System 7-- A) Hybrid of I2V and V2V communications in RSU’s coverage 8-- B) Pure V2V communication out of RSU’s coverage 10-- IV. Proposed Algorithm 13 -- A) Problem transformation 13 -- 1) Graph construction 14 -- 2) Weight assignment and algorithm implementation 18 -- B) Server-vehicle designation 19-- V. Performance Evaluation 22 -- VI. Conclusion and Future work 33 -- APPENDIX 34 -- A) APPENDIX A 34-- B) APPENDIX B 36 -- References 38
Information and Communication Engineering
Related Researcher
  • Author Son, Sang Hyuk RTCPS(Real-Time Cyber-Physical Systems) Lab
  • Research Interests Real-time system; Wireless sensor network; Cyber-physical system; Data and event service; Information security; 실시간 임베디드 시스템
Department of Information and Communication EngineeringThesesMaster

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