An Adaptive Service Management for Multi-media Real-time Traffic in Wireless LANs

무선랜에서 멀티미디어 실시간 트래픽을 위한 적응적 서비스 관리

  • 김경준 (경북대학교 정보통신학과) ;
  • 이창순 (대구한의대학교 멀티미디어학부)
  • Published : 2005.02.01


Recent advances on wireless technology are enabling the design and deployment of real-time traffic in wireless LAN. Point Coordination Function (PCF) mode of Wireless LAN is defined to provide QoS of real time traffic, such as voice, video in wireless LANs. The service polling scheduling plays an important role in real-time traffic services of wireless LAN. This paper proposes a multicast polling scheme to increase the maximum number of conversations by reducing the amount of empty polls in IEEE 802.11 PCF mode. Our simulation studies show that our scheme may improve performance of the PCF in terms of the average transfer delay and packet discard ratio.