Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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An adaptable polling scheme for real time traffic support in IEEE 802.11 networks

  • Pak Jin-suk (Department of Computer Engineering, Kyungpook National University) ;
  • Son Jae-min (Department of Computer Engineering, Kyungpook National University) ;
  • Cho Chi-woo (Department of Computer Engineering, Kyungpook National University) ;
  • Lee Ho-seung (Department of Computer Engineering, Kyungpook National University) ;
  • Han Ki-jun (Department of Computer Engineering, Kyungpook National University)
  • Published : 2004.08.01
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Abstract

This paper presents a new dynamically adaptable polling scheme for efficient support of real-time traffic over an IEEE 802.11 wireless LAN network. The poll scheduling plays an important role in IEEE 802.11 PCF. However, the current version of the polling list management scheme proposed in the IEEE802.11 standard is inefficient when a variable number of mobile stations have variable packets to transmit. If Point Coordinator(PC) has an exact information on the station status, it is possible to efficiently perform polling. In this thesis. we suggest an adaptable polling scheme to meet requirements of the stations. In our scheme, each station transmits packets including a piggyback information to inform that it wants to receive a poll in the next polling duration. Simulation results indicate that our scheme may reduces the packet discard ratio and real-time packet transfer delay.

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