Skip to main content
EURASIP Journal on Wireless Communications and Networking
Download PDF
  • Research Article
  • Open access
  • Published:

Traffic Agents for Improving QoS in Mixed Infrastructure and Ad Hoc Modes Wireless LAN

EURASIP Journal on Wireless Communications and Networking volume 2006, Article number: 094235 (2006) Cite this article

Abstract

As an important complement to infrastructured wireless networks, mobile ad hoc networks (MANET) are more flexible in providing wireless access services, but more difficult in meeting different quality of service (QoS) requirements for mobile customers. Both infrastructure and ad hoc network structures are supported in wireless local area networks (WLAN), which can offer high data-rate wireless multimedia services to the mobile stations (MSs) in a limited geographical area. For those out-of-coverage MSs, how to effectively connect them to the access point (AP) and provide QoS support is a challenging issue. By mixing the infrastructure and the ad hoc modes in WLAN, we propose in this paper a new coverage improvement scheme that can identify suitable idle MSs in good service zones as traffic agents (TAs) to relay traffic from those out-of-coverage MSs to the AP. The service coverage area of WLAN is then expanded. The QoS requirements (e.g., bandwidth) of those MSs are considered in the selection process of corresponding TAs. Mathematical analysis, verified by computer simulations, shows that the proposed TA scheme can effectively reduce blocking probability when traffic load is light.

[12345678910111213]

References

  1. Perkins DD, Hughes HD: A survey on quality-of-service support for mobile ad hoc networks. Wireless Communications and Mobile Computing 2002,2(5):503-513. 10.1002/wcm.73

    Article  Google Scholar 

  2. IEEE Standards Board : Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications. IEEE Std 802.11-1997, November 1997

    Google Scholar 

  3. Lackpour A: Maximizing Wireless LAN Range by Exploiting Two Types of Antenna Diversity. Oberon Wireless, State College, Pa, USA; 2004.

    Google Scholar 

  4. Chuang H-R, Kuo L-C, Lin C-C, Chen W-T: A 2.4 GHz polarization-diversity planar printed antenna for WLAN and wireless communication systems. Proceedings of IEEE Antennas and Propagation Society International Symposium, June 2002, San Antonio, Tex, USA 4: 76-79.

    Article  Google Scholar 

  5. Hills A, Schlegel J, Jenkins B: Estimating signal strengths in the design of an indoor wireless network. IEEE Transactions on Wireless Communications 2004,3(1):17-19. 10.1109/TWC.2003.821161

    Article  Google Scholar 

  6. Lee Y, Kim K, Choi Y: Optimization of AP placement and channel assignment in wireless LANs. Proceedings of 27th Annual IEEE Conference on Local Computer Networks (LCN '02), November 2002, Tampa, Fla, USA 831-836.

    Google Scholar 

  7. Wu R-H, Lee Y-H, Chen S-A: Planning system for indoor wireless network. IEEE Transactions on Consumer Electronics 2001,47(1):73-79. 10.1109/30.920422

    Article  Google Scholar 

  8. Nagy L, Farkas L: Indoor base station location optimization using genetic algorithms. Proceedings of 11th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC '00), September 2000, London, UK 2: 843-846.

    Google Scholar 

  9. Chen JC, Chan S-HG, He JY, Liew S-C: Mixed-mode WLAN: the integration of ad hoc mode with wireless LAN infrastructure. Proceedings of IEEE Global Telecommunications Conference (GLOBECOM '03), December 2003, San Francisco, Calif, USA 1: 231-235.

    Article  Google Scholar 

  10. Chen JC, He JY, Chan S-HG: Relieving wireless hot-spot congestion through ad hoc connections. Proceedings of the 5th International Conference on Mobile and Wireless Communications Networks (MWCN '03), October 2003, Singapore

    Google Scholar 

  11. Huang K-C, Chen K-C: Interference analysis of nonpersistent CSMA with hidden terminals in multicell wireless data networks. Proceedings of 6th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC '95), September 1995, Toronto, Ontario, Canada 2: 907-911.

    Article  Google Scholar 

  12. Bianchi G: Performance analysis of the IEEE 802.11 distributed coordination function. IEEE Journal on Selected Areas in Communications 2000,18(3):535-547. 10.1109/49.840210

    Article  Google Scholar 

  13. Hadzi-Velkov Z, Spasenovski B: Saturation throughput—delay analysis of IEEE 802.11 DCF in fading channel. Proceedings of IEEE International Conference on Communications (ICC '03), May 2003, Anchorage, Alaska, USA 1: 121-126.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Electronic and Electrical Engineering, University College London, Gower Street, London, WC1E 6BT, United Kingdom

    Yang Yang

  2. School of Engineering and Design, Brunel University, Uxbridge, UB8 3PH, United Kingdom

    Hai-Feng Yuan, Wen-Bing Yao & Yong-Hua Song

  3. Institute of Communications Engineering, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan

    Hsiao-Hwa Chen

Authors
  1. Yang Yang
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Hai-Feng Yuan
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Hsiao-Hwa Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Wen-Bing Yao
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Yong-Hua Song
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yang Yang.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Yang, Y., Yuan, HF., Chen, HH. et al. Traffic Agents for Improving QoS in Mixed Infrastructure and Ad Hoc Modes Wireless LAN. J Wireless Com Network 2006, 094235 (2006). https://doi.org/10.1155/WCN/2006/94235

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1155/WCN/2006/94235

Keywords