A New MAC Protocol Ensuring the Multimedia Traffic QoS for CDMA Networks

Authors:
Loren Carrasco;Guillem Femenias;Felix Raja
Affiliations:
Universitat de les Illes Balears, Department de Ciencies Matematiques i Informatica, Ctra Valldemossa km 7.5, 07071 Palma, Spain E-mail: loren@ipc4.uib.es;Universitat de les Illes Balears, Department de Ciencies Matematiques i Informatica, Ctra Valldemossa km 7.5, 07071 Palma, Spain E-mail: guillem@ipc4.uib.es;Universitat de les Illes Balears, Department de Ciencies Matematiques i Informatica, Ctra Valldemossa km 7.5, 07071 Palma, Spain
Venue:
Wireless Personal Communications: An International Journal
Year:
2003

Citing 0
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Wireless Personal Communications: An International Journal

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Abstract

This paper describes the CDMAC, a new Medium Access Control (MAC)protocol for multimedia traffic in CDMA wireless networks. Theprotocol intends to extract the maximum capacity and flexibilityout of the CDMA scheme and at the same time guarantee the expectedQoS of different service types. CDMAC is able to maintain QoSrequirements thanks to the shaping, policing and trafficdifferentiation performed by the scheduler. Moreover, an iterativealgorithm, applied at the beginning of each frame, is used to findthe optimal power vector for all mobiles present in the system,which maximize the system capacity. The basic constraint of thecapacity maximization process is that the BER QoS of eachconnection should be fulfilled. Finally a distributedimplementation, feasible in a practical scenario, is presented.