Title :
A MAC protocol for wireless ATM over CDMA
Author :
Majoor, R. ; Takawira, F.
Author_Institution :
Dept. of Electron. Eng., Natal Univ., Durban, South Africa
Abstract :
Several MAC protocols for wireless ATM have been described in the literature; TDMA and FDMA combinations making up the bulk of these. Very little has appeared on MAC protocols for ATM over CDMA channels. This paper introduces a protocol for carrying ATM cells over a wireless CDMA channel between a mobile and a base station. The paper considers CBR, VBR and ABR traffic. QoS is guaranteed in the CAC scheme, and implemented using a power control mechanism. The protocol makes use of a movable boundary mechanism to partition the bandwidth in proportion to traffic demand. The soft capacity nature of CDMA is exploited by allowing CBR and VBR traffic to `steal´ bandwidth from ABR traffic. Simulation results show that this leads to a greater throughput than would be achieved without this mechanism
Keywords :
access protocols; asynchronous transfer mode; bandwidth allocation; cellular radio; code division multiple access; power control; telecommunication channels; telecommunication congestion control; telecommunication traffic; ABR traffic; ATM cells; CAC scheme; CBR traffic; CDMA channels; MAC protocol; QoS; VBR traffic; bandwidth partitioning; base station; mobile radio; movable boundary mechanism; power control mechanism; soft capacity; throughput; wireless ATM; Bandwidth; Base stations; Frequency division multiaccess; Media Access Protocol; Multiaccess communication; Power control; Throughput; Time division multiple access; Traffic control; Wireless application protocol;
Conference_Titel :
Communications and Signal Processing, 1998. COMSIG '98. Proceedings of the 1998 South African Symposium on
Conference_Location :
Rondebosch
Print_ISBN :
0-7803-5054-5
DOI :
10.1109/COMSIG.1998.736940
