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Sunghyun Seo

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Proceedings Article | 26 November 2003 Paper

QoS-aware call admission control for multimedia over CDMA networks

Sunghyun Seo, Jitae Shin, JongWon Kim

Proceedings Volume 5242, (2003) https://doi.org/10.1117/12.514065

KEYWORDS: Multimedia, Networks, Internet, Telecommunications, Computer simulations

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Diverse multimedia services are at hand on 3G-and-beyond multi-service CDMA systems. Based on four different kinds of traffic types, as defined in Universal Mobile Telecommunications System (UMTS), each multimedia service needs to be admitted and allocated with appropriate resources while taking care of efficient utilization of limited resources. In this paper, we are focusing on a priority-based and QoS (quality of service)-aware CAC (call admission control), which is aware of both QoS requirement per traffic type and time-varying CDMA capability, and allows admission discrimination according to traffic types in order to minimize the probability of QoS violation. Also the CAC needs to combine resource allocation schemes such as complete sharing, complete partitioning, and priority sharing in order to provide fairness and service differentiation among traffic types. The proposed CAC adopts total received power as cell load estimation, estimates resource usage for each traffic type, and applies different threshold per each traffic type (i.e., having different SIR requirement). The performance of proposed CAC in combination with resource allocation scheme is evaluated through extensive computer simulations.

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