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Hybrid call admission control scheme supporting voice/video/packet data services with W-CDMA downlink power allocations

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4 Author(s)
Kim, J. ; Dept. of Inf. Electron. Eng., Ehwa Women''s Univ., Seoul, South Korea ; HyeJin Yeo ; HyunHwa Park ; Yoon-Kyoo Jhee

A call admission control (CAC) procedure, called the hybrid scheme, is proposed to enhance the QoS (quality of service) of attempted calls. In the initial stage of 3rd generation wireless service networks, major limitations may include the small service coverage area and the limited radio link capacity. Thus, the QoS of multiple services is expected to be severely degraded if tentative traffic hot spots occur frequently. The blocking probability (QoS) of attempted calls may increase when a relatively large number of users tries to place multimedia calls in a hot spot area of the service network. In this situation, the proposed hybrid scheme can mitigate the degradation of the QoS of various services by using the available radio channels of neighbouring cells.

Published in:

Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th  (Volume:5 )

Date of Conference:

17-19 May 2004