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Cross-layer resource allocation for integrated Voice/Data traffic in wireless cellular networks

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2 Author(s)
Hai Jiang ; Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada ; Weihua Zhuang

A major task in next-generation wireless cellular networks is provisioning of quality of service (QoS) over the bandwidth limited and error-prone wireless link. In this paper, we propose a cross-layer design scheme to provide QoS for voice and data traffic in wireless cellular networks with differentiated services (DiffServ) backbone. The scheme combines the transport layer protocols and link layer resource allocation to both guarantee the QoS requirements in the transport layer and achieve efficient resource utilization in the link layer. Optimal resource allocation problems for voice and data flows are formulated to guarantee pre-specified QoS with minimal required resources. For integrated voice/data traffic in a cell, a hybrid time-division/code-division medium access control (MAC) scheme is presented to achieve efficient multiplexing. Theoretical analysis and simulation results demonstrate the effectiveness of the proposed cross-layer approach.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:5 ,  Issue: 2 )

Date of Publication:

Feb. 2006

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