Unified low‐layer power allocation and high‐layer mode control for video delivery in device‐to‐device network with multi‐antenna relays. Issue 10 (1st July 2016)

• Record Type: Journal Article
• Authors: Wang, Qin; Wang, Wei; Jin, Shi; Zhu, Hongbo; Zhang, Nai Tong
• Is Part Of: IET communications. Volume 10:Issue 10(2016)
• Page Start: 1196
• Page End: 1205
• Publication Date: 2016-07-01
• Subjects: relay networks (telecommunication) -- cellular radio -- quality of service -- frequency allocation -- telecommunication power management; relay transmission power -- energy constraint -- perceived QoS -- mode control scheme -- unified power allocation -- transmission rates -- protection levels -- retransmission polices -- received video quality expectation -- overlay mode -- underlay mode -- total energy consumption -- quality of service -- user‐centered mode selection problem -- shared relay -- power control -- multi‐antenna relays -- cellular network -- multimedia transmission -- video coding mode -- D2D links -- device‐to‐device links -- frequency reuse mode; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2015.0889
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : This study proposes a quality‐driven approach that jointly selects the frequency reuse mode of device‐to‐device (D2D) links at lower layers, the video coding mode of frames, and multiple paths at higher layers for multimedia transmission in a cellular network with multi‐antenna relays placed at the intersection of adjacent cells. Based on power control of the shared relay, the user‐centered mode selection problem is formulated by maximising the quality of service (QoS) with total energy consumption constrained. Underlay mode and overlay mode are both considered. For each frame, one coding mode (I, P, or B) and multiple paths (cellular links and/or D2D links with/without relays) are selected to optimise the received video quality expectation. Different retransmission polices are considered to give higher protection levels to paths with higher transmission rates. The authors' evaluation shows that the proposed unified power allocation and mode control scheme could enhance the perceived QoS as changing the energy constraint and the distances of different paths. The underlay mode is optimal in most cases. It provides evidences that it is not always the best to code all frames as I‐frames, to initialise the relay transmission power as the maximum, or to select one single path for video transmission.