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On Network Deployment for Ultra-Reliable Communications Using Multi-Connectivity

Mission-critical applications in future vehicular networks require highly reliable wireless communications. Multi-connectivity is a potential solution to meet the desired quality-of-services of these applications. In this work, we consider a highway scenario with multi-connectivity where a vehicle can combine packets transmitted by multiple remote-radio-heads. For given inter-site- distances, number of links, and frequency reuse factors, we derive the expression for outage probability considering communication links affected by shadowing. We investigate the effect of network deployment parameters on the achievable outage reliability under different radio parameters. The simulation results show trade-offs between inter-site distance and control parameters (frequency reuse factor and number of links), as well as network and radio channel parameters (number of satisfied users, effect of shadowing, and path loss exponent) on communications reliability.