QoS based fair resource allocation in multi-cell TD/CDMA communication systems

Abstract

Abstract-In a wireless multimedia code division multiple access (CDMA) system, the resources in terms of transmission rate and power should be efficiently distributed to each user to guarantee its quality-of-service (QoS) requirements. In this paper, a resource allocation algorithm which combines packet scheduling and power assignment is proposed to achieve efficient resource utilization under QoS constraints. The packet scheduling is based on the fair packet loss sharing (FPLS) principle, and the power assignment is determined by the received power limited (RPL) scheme. The basic idea of FPLS is to schedule the transmission of multimedia packets in such a way that all the users have a fair share of packet loss according to their QoS requirements, which maximizes the number of the served users with QoS satisfaction. The RPL scheme minimizes the received power for each packet. Given the propagation path loss, it in turn minimizes the transmitted power as well. The intercell interference from the scheduled packets is also limited in order to increase the system capacity.Index Terms-Code-division multiple access (CDMA), fair packet loss sharing, packet scheduling, quality of service (QoS).

Quality-of-service provisioning and efficient resource utilization in CDMA cellular communications

“…One way is to resort to intercell coordination. A simple distributed intercell coordination for the uplink is to limit the total received signal power (the desired signal powers and the intercell interference) in each cell by a threshold [33]. When the intercell interference level gets higher, the total transmission power in the cell is decreased, which in turn reduces the intercell interference level.…”