Umudike Journal of Engineering and Technology

This paper focused on the evaluation of quality of service of CDMA20001x network. In the experimentation the traffic data used in the performance evaluation of the quality of service of CDMA20001x network were obtained from the Operation and Maintenance Centre (OMC) of Visafone network located in Awka, the capital of Anambra State of Nigeria. These data were collected from 00.00 to 24.00 hours with total cumulative readings of 60mins per each hour.  There is one reading per day consisting of 24hrs readings and seven readings per week consisting of 168hrs.The blocking probability and handover blocking probability models were used in determining the quality of service of the network. Results showed that the highest numbers of block calls occurs at 20:00 hour (7.00 to 8:00pm) and was obtained as the busy hour, which have the highest calls intensity. Results also showed that Monday have the highest attempt calls followed by Friday, Tuesday, Wednesday, Thursday, Saturday and Sunday. Result obtained from the blocking probability showed that the call blocking probability reduces as the number of transmission channels increases in the mobile network. Result also showed that the handover blocking probability increases as the number of offered traffic load in erlang increases with a given number of transmission channels.