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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Relay Performance Analysis of TTR and STR Relay Modes in IEEE 802.16j MMR System

  • Seo, Si-O (Department of Computer and Information Science, Korea University) ;
  • Kim, Se-Jin (Department of Computer and Information Science, Korea University) ;
  • Kim, Seung-Yeon (Department of Electronics and Information Engineering, Korea University) ;
  • Kim, Young-Il (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Lee, Hyong-Woo (Department of Electronics and Information Engineering, Korea University) ;
  • Ryu, Seung-Wan (Department of Information Systems, Chung-Ang University) ;
  • Cho, Choong-Ho (Department of Computer and Information Science, Korea University)
  • Received : 2009.09.15
  • Accepted : 2010.03.03
  • Published : 2010.04.30
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Abstract

The IEEE802.16j standard uses non-transparent relay stations to extend coverage. There are two types of non-transparent relay modes, that is, the time-division transmit and receive (TTR) relay mode which can operate with one of two types of frame structures, a single-frame and multiframe structure, and the simultaneous transmit and receive (STR) relay mode. In this paper, we analyze the relay performance of TTR and STR relay modes in IEEE 802.16j MMR system. We also propose a fair resource allocation scheme for the downlink relay frame. Numerical results show that relay performance of the TTR with a single-frame or a multiframe structure and that of the STR relay modes are almost the same in a two-hop system. However, in a three-hop system, the TTR mode with a single-frame structure outperforms other relay modes.

Keywords

References

  1. IEEE Std. 802.16e-2005, "IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems," Feb. 2006.
  2. WiMAX Forum, http://www.wimaxforum.org.
  3. IEEE802.16j TG, http://grouper.ieee.org/groups/802/16 /relay/.
  4. IEEE802.16j TG, "Guideline Documents: Usage Models," IEEE802.16j-06/015.
  5. IEEE Std. $802.16j^{TM}$-2009, "Part 16: Air Interface for Broadband Wireless Access Systems, Amendment 1: Multihop Relay Specification."
  6. Relay based Wireless Network and Standard (rewind), http://www.rewind-project.eu.
  7. IEEE 802.16j-06/013r3, "Multi-hop Relay System Evaluation Methodology (Channel Model and Performance Metric)," 2007.

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