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Authors
Affiliations
1 Dept. of ECE, SNIST, Hyderabad, IN
Source
International Journal of Engineering Research, Vol 3, No SP 2 (2014), Pagination: 30-35
Abstract
Wireless multimedia networks are becoming increasingly popular as they provide users the convenience of access to information and services anytime, anywhere and in any format. The upcoming wireless cellular infrastructures such as third generation (3G) and fourth generation (4G) are deemed to support new high-speed services with different Quality-of-Service (QOS) and their respective traffic profiles. Different wireless multimedia services have diverse bandwidth and QOS requirements, which need to be guaranteed by the wireless cellular networks. The call admission control algorithm deals with multiple classes of calls having different requirements, requesting different Quality of Service (QOS) and with different priorities for admission into the network. In this paper we present a Adaptive Call admission Control algorithm for the next generation of wireless cellular networks at the connection level, where the bandwidth allocated to the ongoing calls can be dynamically adjusted by Bandwidth up gradation and degradation algorithms. This framework supports establishing a priority mechanism for handoff calls over new calls and also establishing a priority mechanism for different types of traffic classes (CBR, VBR, UBR). The performance of proposed adaptive CAC algorithm is evaluated based on the New Call Blocking Probability, Hand off Call Dropping rate with the existing CAC algorithm for wireless multimedia networks. By simulation results it is shown that our proposed algorithm achieves less New Call Blocking Probability, Hand off Call Dropping rate for different traffic classes.
Keywords
CBR, VBR, UBR, QOS, 3G.
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