Enhanced Multimedia and Real-Time Stream Throughput in Wireless Ad-Hoc LAN Using Distributed Virtual Channel Based MAC

  • Md. Mustafizur Rahman
  • Choong Seon Hong
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4267)


Recent and upcoming CSMA/CA based MAC protocols for wireless LANs offer block-acknowledgement or aggregated frame exchange in order to provide high data rate for multimedia and real-time data, while all of them avoid collisions by exclusive use of wireless medium that block neighboring nodes of both sender and receiver from participating in concurrent transmission; and thus downgrade medium utilization and overall throughput. In this work, we offer to create concurrent virtual channels over same physical channel by synchronizing the transmit/receive switching of senders and receivers and allow parallel data transfer. Each virtual channel is used by a transmitter/receiver pair and all virtual channels within 2-hop network utilize the medium by distributed coordination and avoid inter virtual channel interference. Simulation result shows that proposed scheme removes the obstruction to participate in parallel transmission for some neighboring nodes of sender and receiver and improves the network performance.


Medium Access Control Medium Access Control Protocol Medium Access Control Layer Virtual Channel Data Window 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. 1.
    Ramanathan, S., Steenstrup, M.: A survey of routing techniques for mobile communication networks. Mobile Networks and Applications 1(2), 89–104 (1996)CrossRefGoogle Scholar
  2. 2.
    Gallager, R.: A perspective on multi-access channels. IEEE Trans. Infrom. Theory (Special issue on Random Access Communications) IT-31 (March 1985)Google Scholar
  3. 3.
    Karn, P.: MACA: A new channel access method for packet radio. In: Proceedings of the 9th Computer Networking Conference, pp. 134–140 (1990)Google Scholar
  4. 4.
    Bharghavan, V., Demers, A., Shenker, S., Zhang, L.: MACAW: A media access protocol for wireless LANs. In: Proceedings of the ACM SIGCOMM 1994, London, UK, pp. 212–215 (August 1994)Google Scholar
  5. 5.
    Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications (Part 11), Amendment 8: Medium Access Control (MAC) Quality of Service Enhancements, Std. 802.11e (November 2005)Google Scholar
  6. 6.
    Michael Meehan, J., Nelson, P.A., Engeset, D., Pashiardis, A.: Data Link Frame Aggregation Protocol. Information: An International Interdisciplinary Journal 7(1), 59–68 (2004)Google Scholar
  7. 7.
    Wilson, J.M.: The Next Generation of Wireless LAN Emerges with 802.11n, Intel Magazine (2003),
  8. 8.
    Sigh, K.P., Chou, C.M., Lu, M.Y., Chen, S.M.: A Distributed Spatial Reuse (DSR) MAC Protocol for IEEE 802.11 Ad-Hoc Wireless LANs. In: The Proceedings of the 10th IEEE symposium on Computers and Communications, ISCC 2005, pp. 658–663 (2005)Google Scholar
  9. 9.
    Acharya, A., Misra, A., Bansal, S.: MACA-P: A MAC for concurrent transmissions in multi-hop wireless network. In: Proceedings of the IEEE International Conference on Pervasive Computing and Communications, pp. 505–508 (2003)Google Scholar
  10. 10.
    Acharya, A., Misra, A., Bansal, S.: Design and Analysis of a Cooperative Medium Access Scheme for Wireless Mesh Networks. In: Proceedings of the First International Conference on Broadband Networks (BROADNETS 2004), pp. 321–631 (2004)Google Scholar
  11. 11.
    Rozovsky, R., Kumar, P.R.: SEEDEX: A MAC protocol for ad hoc networks. In: Proceedings of ACM Mobihoc (2001)Google Scholar
  12. 12.
    Chowdhury, R.R., Yang, X., Vaidya, N.H., Ramanathan, R.: Using directional antennas for medium access control in ad hoc networks. In: Proceedings of the ACM international Conference on Mobile Computing and Networking, pp. 59–70 (2002)Google Scholar
  13. 13.
    Wang, Y., Garcia-Luna-Aceves, J.J.: Spatial reuse and collision avoidance in ad hoc networks with directional antennas. In: Proceedings of the IEEE Global Telecommunications Conference, vol. 1, pp. 112–116 (2002)Google Scholar

Copyright information

© IFIP International Federation for Information Processing 2006

Authors and Affiliations

  • Md. Mustafizur Rahman
    • 1
  • Choong Seon Hong
    • 1
  1. 1.Department of Computer EngineeringKyung Hee UniversitySouth Korea

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