Design and analysis of highway safety communication protocol in 5.9 GHZ dedicated short range communication spectrum

TLDR

The study designs a vehicle‑to‑vehicle location‑based broadcast protocol for highway safety in the 5.9 GHz DSRC spectrum. The protocol’s performance is analytically characterized by expressions for transmission‑failure probability and channel occupancy, and its sensitivity is evaluated across communication and traffic conditions. Optimal parameter relationships are identified, and feasible combinations of communication and traffic settings that satisfy performance requirements are determined.

Abstract

We study the wireless communication among highway vehicles in the newly-assigned 5.9 GHz dedicated short range communication (DSRC) spectrum. A vehicle-vehicle location-based broadcast (LBB) communication protocol is designed to meet highway safety applications' communication requirements. The analytical expressions of the performance of the protocol in terms of probability of transmission failure and channel occupancy are derived with commonly satisfied assumptions. The optimal relation between the performance and design parameters is obtained from the expressions. The sensitivity of the protocol performance is tested for various communication conditions as well as highway traffic conditions. Feasible combinations of the communication and highway traffic parameters are found for certain requirements on protocol performance.