Power and Packet Rate Control for Vehicular Networks in Multi-Application Scenarios

TL;DR

This paper introduces dynamic power and rate control techniques for vehicular networks to efficiently manage multi-application scenarios, reducing channel load while meeting diverse application requirements.

Contribution

It proposes novel adaptive techniques for transmission rate and power control in vehicular networks handling multiple applications simultaneously.

Findings

Significantly reduces channel load.

Improves satisfaction of application requirements.

Outperforms existing approaches like SAE J2735 Message Handler.

Abstract

Vehicular networks require vehicles to periodically transmit 1-hop broadcast packets in order to detect other vehicles in their local neighborhood. Many vehicular applications depend on the correct reception of these packets that are transmitted on a common control channel. Vehicles will actually be required to simultaneously execute multiple applications. The transmission of the broadcast packets should hence be configured to satisfy the requirements of all applications while controlling the channel load. This can be challenging when vehicles simultaneously run multiple applications, and each application has different requirements that vary with the vehicular context (e.g. speed and density). In this context, this paper proposes and evaluates different techniques to dynamically adapt the rate and power of 1-hop broadcast packets per vehicle in multi-application scenarios. The proposed techniques are designed to satisfy the requirements of multiple simultaneous applications and reduce the channel load. The evaluation shows that the proposed techniques significantly decrease the channel load, and can better satisfy the requirements of multiple applications compared to existing approaches, in particular the Message Handler specified in the SAE J2735 DSRC Message Set Dictionary.