DYNAMIC RESOURCE MANAGEMENT AND ADMISSION CONTROL SCHEME FOR IEEE802.16J MULTI-HOP RELAYING NETWORKS

摘要

In IEEE 802.16-based multi-hop networks, transmissions using a multi-hop high-rate relay path can potentially achieve better throughput and lower delay than when using a single-hop low-rate direct path. Since the heterogeneous services provided by the system are connection oriented, admission control and associated resource reservation mechanisms are required to achieve the desired quality of service (QoS). In this paper, we first discuss the QoS issue for IEEE 802.16 wireless metropolitan area network (MAN) and then propose a dynamic resource management and admission control (DRMAC) scheme for scheduling services as defined in the 802.16 specifications. The DRMAC scheme enables the base station (BS) to allocate appropriate resources to mobile stations (MSs) according to the received signal-to-noise ratio (SNR) from MSs and maximizes the resource utilization through resource borrowing and degradation. The proposed DRMAC scheme not only improves the resource utilization but reduces the blocking probability. Simulation results show that the proposed DRMAC can increase the resource utilization by 34% and reduce blocking probability.