Adaptive guard channel based CAC scheme in a 3G-WLAN integrated network

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In wireless networks, guard channel based Call Admission Control (CAC) schemes are widely used to protect handoff calls for seamless wireless services. However, the introduction of the guard channels in wireless networks results in the increase in the new call blocking probability. This general situation also occurs in a 3G-WLAN integrated network. To solve this problem in a 3G-WLAN integrated network for QoS support, we propose an adaptive guard channel based Call Admission Control (CAC) scheme in this paper. The main objective of our guard channel based CAC scheme is to alleviate the increase in the new call blocking probability due to guard channels while it can still protect the handoff calls. For the design of our adaptive guard channel based CAC scheme, we first develop and analyze a performance model for a general guard channel based CAC scheme based on a non-homogeneous quasi birth and death model. The analytic results are used to design our adaptive guard channel based CAC scheme. Numerical studies show that our adaptive guard channel based CAC scheme can achieve its objective.
Publisher
ACM
Issue Date
2009-07-29
Language
English
Citation

QTNA 2009 - 4th International Conference on Queueing Theory and Network Applications, pp.4:1 - 4:8

DOI
10.1145/1626553.1626557
URI
http://hdl.handle.net/10203/23374
Appears in Collection
MA-Conference Papers(학술회의논문)
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