Title :
The grade of service for integrated voice/data wireless DS-CDMA networks
Author :
Guo, Ning ; Morgera, Salvatore D.
Author_Institution :
Inf. Networks & Syst. Lab., McGill Univ., Montreal, Que., Canada
Abstract :
The performance of integrated voice/data, wireless DS-CDMA networks is studied. Due to the specific nature of the multiplexing method for CDMA networks, the performance of transmission services depends on the number of active users in the network. Bit error rate formulae for voice and data calls are obtained as functions of the numbers of active voice and data calls. The blocking probability of voice calls is determined for a call access administration strategy with preemptive priority for voice calls. The improvement in the performance of data calls as a result of the application of ARQ techniques is examined. Formulae for the virtual transmission rate of data calls are derived. The article provides an approach to understanding the complex relationship between the grade of service and the number of active users in CDMA networks. Based on the results, a bandwidth management strategy is proposed for CDMA networks transporting multimedia services. In order to mitigate the congestion of data calls under fully loaded cell conditions, a throttling back rate reduction method is studied
Keywords :
automatic repeat request; code division multiple access; data communication; land mobile radio; multimedia communication; performance evaluation; probability; pseudonoise codes; radio networks; spread spectrum communication; telecommunication network management; voice communication; ARQ techniques; DS-CDMA networks; bandwidth management; bit error rate; blocking probability; call access administration; data calls; grade of service; integrated voice/data wireless networks; loaded cell conditions; multimedia services; multiplexing method; preemptive priority; throttling back rate reduction method; transmission services performance; virtual transmission rate; voice calls; Automatic repeat request; Bandwidth; Bit error rate; Data engineering; Interference; Laboratories; Multiaccess communication; Multimedia systems; Telecommunication traffic; Time division multiple access;
Conference_Titel :
Communications, 1994. ICC '94, SUPERCOMM/ICC '94, Conference Record, 'Serving Humanity Through Communications.' IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-1825-0
DOI :
10.1109/ICC.1994.368931
