Pass It on: Advanced Relaying Concepts and Challenges for Networks Beyond 4G

A key feature of future wireless networks will be relay nodes (RNs). They can increase network capacity, extend coverage, and provide more uniform quality-of-service (QoS) across the cell area in a cost-effective manner. As a result, a significant amount of attention has been attracted from the wireless industry and standards by relaying techniques. The Third-Generation Partnership Project (3GPP) release 10 has considered RNs that act as base stations (BSs), known as type-1 RNs, aiming only for coverage extension. However, several challenges have to be addressed to attain the theoretical gains, as RNs can be employed in different ways. An overview of the relaying concepts related to the 3GPP long-term evolution (LTE) road map, i.e., concepts related to type-1, type-2, and moving RNs, is presented in this article. A number of promising solutions for each RN type are discussed, as the implementation challenges are outlined. This article focuses on the allocation of resources to the backhaul and access links, more specifically regarding type-1 RNs. The focus is on designing distributed hybrid automatic repeat request (HARQ) protocols that involve RNs, regarding type-2 RNs. As an efficient solution to the ever-growing demand for wireless broadband by vehicleborne users, moving RNs are presented. An important role can be played in the future, as well as the user experience significantly improved, by the presented relaying concepts and solutions, overall.

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  • Authors:
    • Papadogiannis, Agisilaos
    • Farber, Michael
    • Saadani, Ahmed
    • Nisar, Muhaad Danish
    • Weitkemper, Petra
    • de Moraes, Thiago Martins
    • Gora, Jacek
    • Cassiau, Nicolas
    • Ktenas, Dimitri
    • Vihriala, Jaakko
    • Khanfouci, Mourad
    • Svensson, Tommy
  • Publication Date: 2014


  • English

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  • Accession Number: 01528460
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 10 2014 4:39PM