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Open AccessFeature PaperArticle

Adaptive Transmit Power Control Algorithm for Sensing-Based Semi-Persistent Scheduling in C-V2X Mode 4 Communication

Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea
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Electronics 2019, 8(8), 846; https://doi.org/10.3390/electronics8080846
Received: 5 June 2019 / Revised: 13 July 2019 / Accepted: 25 July 2019 / Published: 29 July 2019
(This article belongs to the Special Issue New Advances of Vehicular Ad Hoc Networks (VANETs))
For cellular-based vehicle-to-everything (C-V2X) communication, vital information about status and intention is periodically broadcasted by each vehicle using the cooperative awareness message (CAM) service. In C-V2X, the task of resource allocation can either be carried out in a centralized manner by the network, termed Mode 3, or by the vehicles themselves in a distributed manner without any core network support, termed Mode 4. Mode 4 scheduling is accomplished by employing sensing-based semi-persistent scheduling (SB-SPS), where the vehicles sense the medium and identify the best time-frequency resource combination for transmission of the CAM. Focusing on Mode 4 in this paper, we present a comprehensive analysis of the impact of variations in the transmit power of the vehicle on the performance of SB-SPS for C-V2X communications in various traffic scenarios through simulations. An adaptive-transmit power control (A-TPC) algorithm is presented to improve the quality of service for various large-scale traffic scenarios, where each vehicle uses real-time channel-sensing information to adjust the transmit power in order to avoid interference with neighbouring vehicles. The results demonstrate that our proposed algorithm outperforms the conventional TPC schemes. View Full-Text
Keywords: LTE; C-V2X services; C-V2V communication; 5G; SB-SPS; transmit power control LTE; C-V2X services; C-V2V communication; 5G; SB-SPS; transmit power control
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MDPI and ACS Style

Haider, A.; Hwang, S.-H. Adaptive Transmit Power Control Algorithm for Sensing-Based Semi-Persistent Scheduling in C-V2X Mode 4 Communication. Electronics 2019, 8, 846.

AMA Style

Haider A, Hwang S-H. Adaptive Transmit Power Control Algorithm for Sensing-Based Semi-Persistent Scheduling in C-V2X Mode 4 Communication. Electronics. 2019; 8(8):846.

Chicago/Turabian Style

Haider, Amir; Hwang, Seung-Hoon. 2019. "Adaptive Transmit Power Control Algorithm for Sensing-Based Semi-Persistent Scheduling in C-V2X Mode 4 Communication" Electronics 8, no. 8: 846.

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