Weitere Artikel dieser Ausgabe durch Wischen aufrufen
Decentralised interference management for orthogonal frequency division multiple access (OFDMA) operating in time division duplex (TDD) cellular systems is addressed. Interference aware allocation of time-frequency slots is accomplished by letting receivers transmit a busy burst (BB) in a time-multiplexed minislot, upon successful reception of data. Exploiting TDD channel reciprocity, an exclusion region around a victim receiver is established, whose size is determined by a threshold parameter, known at the entire network. By adjusting this threshold parameter, the amount of cochannel interference (CCI) caused to active receivers in neighbouring cells is dynamically controlled. It is demonstrated that by tuning the interference threshold parameter, system throughput can be traded off for improving user throughput at the cell boundary, which in turn enhances fairness. Moreover, a variable BB power is proposed that allows an individual link to signal the maximum CCI it can tolerate whilst satisfying a certain quality-of-service constraint. The variable BB power variant not only alleviates the need to optimise the interference threshold parameter, but also achieves a favourable tradeoff between system throughput and fairness. Finally, link adaptation conveyed by BB signalling is proposed, where the transmission format is matched to the instantaneous channel conditions.
IEEE802.11a-1999 : Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications; High-Speed Physical Layer in the 5 GHz Band. IEEE Standard Institution, Piscataway, NJ, USA, 1999
ETSI EN 300 744 v1.5.1 (2004-06) : Digital Video Broadcasting (DVB); Framing Structure, Channel Coding and Modulation for Digital Terrestrial Television. European Telecommunications Standards Institute (ETSI), June 2004
3rd Generation Partnership Project (3GPP) : Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation (Release 8). Technical Specification Group Radio Access Network, 3GPP TS 36.211 V8.2.0, 3GPP March 2008
Sternad M, Svensson T, Ottosson T, Ahlen A, Svensson A, Brunstrom A: Towards Systems Beyond 3G Based on Adaptive OFDMA Transmission. Proceedings of the IEEE 2007, 95(12):2432-2455. CrossRef
Elayoubi S-E, Ben Haddada O, Fourestie B: Performance evaluation of frequency planning schemes in OFDMA-based networks. IEEE Transactions on Wireless Communications 2008, 7(5, part 1):1623-1633. CrossRef
Necker MC: Local interference coordination in cellular OFDMA networks. Proceedings of the 66th IEEE Vehicular Technology Conference (VTC '07), September-October 2007, Baltimore, Md, USA 1741-1746.
Heikkinen SM, Haas H, Povey GJR: Investigation of adjacent channel interference in UTRA-TDD system. Proceedings of the IEE Colloquium on UMTS Terminals and Software Radio, April 1999, Glasgow, UK 13/1-13/6.
IST-4-027756 WINNER II : D6.13.14 version 1.1 WINNER II System Concept Description. January 2008, http://www.ist-winner.org/WINNER2-Deliverables/D6.13.14v1.1.pdf
Bharucha Z, Haas H: Application of the TDD underlay concept to home nodeB scenario. Proceedings of the 67th IEEE Vehicular Technology Conference (VTC '08), May 2008, Singapore 56-60.
Haas ZJ, Deng J: Dual busy tone multiple access (DBTMA)—a multiple access control scheme for ad hoc networks. IEEE Transactions on Communications 2002, 50(6):975-985. 10.1109/TCOMM.2002.1010617 CrossRef
Zhao R, Walke B, Einhaus M: Constructing efficient multi-hop mesh networks. Proceedings of the 30th Anniversary IEEE Conference on Local Computer Networks (LCN '05), November 2005, Sydney, Australia 166-173. CrossRef
Omiyi PE, Haas H: Improving time-slot allocation in 4th generation OFDM/TDMA TDD radio access networks with innovative channel-sensing. Proceedings of the IEEE International Conference on Communications (ICC '04), June 2004, Paris, France 6: 3133-3137.
Omiyi P, Haas H, Auer G: Analysis of TDD cellular interference mitigation using busy-bursts. IEEE Transactions on Wireless Communications 2007, 6(7):2721-2731. CrossRef
Haas H, Nguyen VD, Omiyi P, Nedev N, Auer G: Interference aware medium access in cellular OFDMA/TDD networks. Proceedings of the IEEE International Conference on Communications (ICC '06), July 2006, Istanbul, Turkey 4: 1778-1783.
Ghimire B, Haas H, Auer G: Busy burst enabled interference avoidance in winner-TDD. Proceedings of the 18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC '07), September 2007, Athens, Greece 1-5.
IST-4-027756 WINNER II : D6.13.7 v1.00, WINNER II Test Scenarios and Calibration Cases Issue 2. December 2006, http://www.ist-winner.org/WINNER2-Deliverables/D6.13.7.pdf
Haas H, McLaughlin S (Eds): Next Generation Mobile Access Technologies: Implementing TDD. Cambridge University Press, Cambridge, UK; 2008.
Rappaport TS: Wireless Communications: Principles and Practice. 2nd edition. Prentice Hall, Upper Saddle River, NJ, USA; 2001. MATH
Wang W, Ottosson T, Sternad M, Ahlén A, Svensson A: Impact of multiuser diversity and channel variability on adaptive OFDM. Proceedings of the 58th IEEE Vehicular Technology Conference (VTC '03), October 2003, Orlando, Fla, USA 1: 547-551.
Bonald T: A score-based opportunistic scheduler for fading radio channels. Proceedings of the European Wireless Conference (EWC '04), February 2004, Barcelona, Spain 283-292.
Jain R, Chiu D, Hawe W: A quantitative measure of fairness and discrimination for resource allocation in shared computer systems. DEC, Maynard, Mass, USA; 1984.
Agyapong P, Haas H, Tyrrell A, Auer G: Interference tolerance signaling using TDD busy tone concept. Proceedings of the 65th IEEE Vehicular Technology Conference (VTC '07), April 2007, Dublin, Ireland 2850-2854.
IST-4-027756 WINNER II : D1.1.2 v1.2 WINNER II Channel Models. November 2007, http://www.ist-winner.org/WINNER2-Deliverables/D1.1.2v1.1.pdf
- Busy Bursts for Trading off Throughput and Fairness in Cellular OFDMA-TDD
- Springer International Publishing
EURASIP Journal on Wireless Communications and Networking
Elektronische ISSN: 1687-1499
Neuer Inhalt/© ITandMEDIA, Best Practices für die Mitarbeiter-Partizipation in der Produktentwicklung/© astrosystem | stock.adobe.com