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Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/5624

Title: Traffic agents for improving QoS in mixed infrastructure and ad hoc modes wireless LAN
Authors: Yang, Y
Yuan, H
Chen, H
Yao, W
Song, Y
Publication Date: 2006
Publisher: Hindawi Publishing Corporation
Citation: EURASIP Journal on Wireless Communications and Networking, 2006(2006): 94235, 2006
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.
URI: http://bura.brunel.ac.uk/handle/2438/5624
DOI: http://dx.doi.org/10.1155/WCN/2006/94235
ISSN: 1687-1472
Appears in Collections:Electronic and Computer Engineering
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