Relay Selection for Efficient HARQ-IR Protocols in Relay-Assisted Multisource Multicast Networks

Quoc-Tuan Vien Q. V., Nguyen H. X., Shah P., Ever E., Duc To D. T.

IEEE 79th Vehicular Technology Conference (VTC-Spring), Seoul, South Korea, 18 - 21 May 2014 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Seoul
  • Country: South Korea
  • Middle East Technical University Affiliated: Yes

Abstract

This paper investigates relay selection for reliable data transmission in relay-assisted multisource multicast networks (RMMNs) where multiple source nodes distribute information to a set of destination nodes with the assistance of multiple relay nodes. Hybrid automatic repeat request with incremental redundancy (HARQ-IR) is used and supported by either a physical-layer network coding (PNC) or an analog network coding (ANC) technique employed at the relays. By deriving efficiency metrics of the HARQ-IR protocols, we propose relay selection schemes for RMMNs to minimize the transmission delay and energy consumption. Simulation results are provided to analyse each relay selection scheme.