Efficient Channel Utilization of Radio Resources in W-CDMA Communication Network Using Dynamic Scheduling Technique

Abstract

The ever-increasing demand on mobile wireless operators to provide efficient voice and high speed data services
has led to search for powerful methods to share the available spectrum in most efficient way. Therefore, in order to
guarantee the user QoS requirements with high utilization of the radio resources in Wide Band Code Division
Multiple Access (WCDMA)-based cellular networks, both the channel rate and transmission power of each user
should be dynamically adjusted. Against this back drop, this work has achieved the incorporation of Dynamic
Schedulers (DS) in WCDMA Base stations. The Dynamic Schedulers serve as the main switching technique in the
traffic concentration node cells. The Dynamic Schedulers therefore, distribute the available system resources to
users in each scheduling time interval according to individual bandwidth and QoS requirement. The work used the
MTN RFC 2544 standard for benchmarking the QoS metrics of their WCDMA network in Awka. A validation on the
performance of the developed scheme using both field and simulated datasets were obtained. From the assessment
of results, the Dynamic Schedulers were able to substantially improve on the performance of the reference network
particularly in the areas of dropped calls and latency in all cases. This could lead to improved service delivery in
Nigeria as case reference.