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학술대회 Analysis of Periodic Broadcast Message for DSRC Systems under High-density Vehicle Environments
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송유승, 이신경
International Conference on Information and Communication Technology Convergence (ICTC) 2017, pp.1009-1013
17ZS1500, 자율주행자동차의 실시간 제어를 위한 고속 V-Link 통신기술 개발, 오현서
Recently, many applications for co-operative Intelligent Transportation System (C-ITS) using wireless vehicle communication technology such as DSRC have been developed to improve traffic problems and provide user convenience. Above all, broadcast message sets such as CAM and DENM are very useful for vehicle safety. However, V2X systems must design system parameters in highly congested traffic conditions, especially to ensure robust communication channels while avoiding packet collisions. This paper analyzes the proper transmit power control to maintain channel load under maximum channel capacity. From the obtained system parameters, the packet delivery ratio and the mean delay are analyzed as system performance for periodic broadcast messages. In addition, the analysis for the physical transmission mode and the contention window size is performed to satisfy the packet collision rate of 1% in the given number of vehicles and transmission packet size.
KSP 제안 키워드
Broadcast messages, C-ITS, Channel capacity, Channel load, Contention window size, DSRC systems, High-density, Intelligent Transport Systems(ITS), Packet Delivery Ratio, Packet collision, Packet size