An admission control algorithm for multi-hop 802.11e-based WLANs

Recently, wireless local area network (WLAN) hotspots have been deployed in many areas (e.g., cafes, airports, university campuses). The new IEEE 802.11e standard further provides quality of service (QoS) provisioning by grouping the applications (or traffic) into four different access categories. The coverage area of WLANs can be extended by allowing the neighboring mobile devices to relay data to the access points. This concept is known as multi-hop WLANs. Due to the limited network capacity and the contentionbased channel access mechanism, admission control is required to regulate the number of simultaneous flows to maintain QoS. The multi-hop extension of WLANs present further challenges for admission control design due to the location-dependentcontention in the network. In this paper, we propose an admission control algorithm for multi-hop 802.11e WLANs. The admission control algorithm first constructs the network's contention graph to break down the network contention situa...

• Type: Journal
• Year: 2008
• Where: COMCOM
• Authors: Yuxia Lin, Vincent W. S. Wong
• Keywords: Admission Control, COMCOM 2008, Multi-hop 802.11e Wlans, Wireless Local Area Network