Capacity Gain of Zone Division for a Position-Based Resource Allocation Algorithm in WCDMA Uplink Data Transmission

摘要

We present a position-based resource allocation algorithm and evaluate the gain of zone division by a simulator that realistically replicates the imperfect operations of a real system. The positions are important in the sense of how they affect the level of interference in adjacent cells (or sectors), and is a function of the distance to adjacent base stations (BSs) and the shadowing effects of the propagation environment. The Queued Packet Algorithm (QPA) introduced here from is based on the occupancy of virtual queues for users grouped in zones where the resource requirements may be considered as similar. We evaluate the gain of a 4-zone division versus a 2-zone division for an assignment region at capacity for various propagation conditions and mobile distributions in the system. We consider stable operation of the system with long-term fairness achieved between users in different zones of the same cell. We show that the capacity gain of 4-zone division ranges between 8% and 15% compared to the 2-zone division.