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QoS-aware Resource Allocation for In-band Relaying in LTE-Advanced

Authors:
Thiago Martins de Moraes
Arturo Antonio Gonzalez
Muhammad Danish Nisar
Eiko Seidel

Keywords: QoS; Relay; LTE; Resource allocation; Scheduler; Backhaul link; VoIP; Video; Delay budget; In-band Relays.

Abstract:
Fulfilling the heterogeneous quality of service (QoS) requirements of individual users is a central theme in future wireless networks. The addition of relay nodes introduces some new challenges towards achieving this target. In this work, we study the problem of resource allocation in advanced-relay scenarios. To this end, we propose the design of an efficient QoS-aware scheduler that strikes a balance between the latency and the bit rate requirements of individual traffic flows. The proposed scheduler is implemented at the donor eNB and the relay node by adapting to the additional challenges introduced by the relay node’s wireless backhaul link. Finally, via system level simulations for the downstream direction emulating traffic with different bit rate and latency requirements, we demonstrate that our algorithm is able to multiplex mixed traffic with small or no violation of the individual QoS requirements, thereby achieving significant gains over baseline approaches.

Pages: 195 to 201

Copyright: Copyright (c) IARIA, 2012

Publication date: June 24, 2012

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-203-5

Location: Venice, Italy

Dates: from June 24, 2012 to June 29, 2012