a distributed qos guaranteed scheme for ieee 802.16 broadband wireless access systems
This paper proposes a distributed quality of service (QoS) guaranteed scheme to guarantee QoS for multimedia services of connection users in IEEE 802.16 broadband wireless access (BWA) Systems. An environment of combination of the fixed wireless connections and mobile wireless connections is considered in this paper. In order to provide better QoS guarantees for connection users in the IEEE 802.16 BWA Systems, efficient QoS guaranteed schemes and corresponding algorithms must be developed in the base station (BS) and subscriber station (SS). According to the connection requests of service types, the QoS influence factors of connection-level and packet-level are analyzed in this paper. We utilize the concept of distributed load balance to share the overheads of BS and SS reasonably. Simulation results show that the proposed scheme is efficient for reducing the connection-blocking probability (CBP), connection-dropping probability (CDP), and packet delay rate.
ieee 802.16 quality of service (qos) multimedia connection-blocking probability connection-dropping probability packet delay rate