A Robust Relay Placement Framework for 60GHz mmWave Wireless Personal Area Networks

TL;DR

This paper presents a robust relay placement framework for 60GHz mmWave WPANs, optimizing relay deployment to ensure high QoS for multimedia streaming despite environmental blockages.

Contribution

It introduces new algorithms for robust relay placement that minimize relay count and maximize utility, addressing LOS/NLOS challenges in dynamic environments.

Findings

Algorithms reduce service disruption during mobility.

Optimized relay placement improves network reliability.

Framework effectively handles LOS blockages.

Abstract

Multimedia streaming applications with stringent QoS requirements in 60GHz mmWave wireless personal area networks (WPANs) demand high rate and low latency data transfer as well as low service disruption. In this paper, we consider the problem of robust relay placement in 60GHz WPANs. Relays forward traffic from transmitter devices to receiver devices facilitating i) the primary communication path for non-line-of-sight (NLOS) transceiver pairs, and ii) secondary (backup) communication path for line-of-sight (LOS) transceiver pairs. We formulate the robust minimum relay placement problem and the robust maximum utility relay placement problem with the objective to minimize the number of relays deployed and maximize the network utility, respectively. Efficient algorithms are developed to solve both problems and have been shown to incur less service disruption in presence of moving subjects that may block the LOS paths in the environment.