Abstract
For 3G and beyond wideband code-division multiple access (WCDMA) cellular networks supporting heterogeneous traffic, sharing the radio access network has become an important issue for 3G mobile service providers (MSPs). Sharing of network infrastructure among MSPs offers an alternative solution to reducing the investment in the coverage phase of WCDMA. In radio access network (RAN) sharing method, which is our focus in this study, each MSP has its own core network and only the RAN is shared. It implies that multiple MSPs fully share the same RAN. This paper tackles an uplink efficient scheduling to provide maximum system throughput and proportional fairness in accordance with MSP capacity share through adaptive resource allocation scheme. We refer to this new scheme as MSPs Code Division Generalized Processor sharing scheme (MSP-CDGPS). It employs both adaptive rate allocation to maximize the resource utilization and GPS techniques to provide fair services for each MSP supporting multimedia traffic. The simulation results show that the proposed scheme improves both system utilization (throughput) and average delays for each traffic class.