WLC22-3: New Distributed QoS Control Scheme for IEEE 802.16 Wireless Access Networks

The IEEE 802.16 WirelessMAN standard provides a comprehensive quality-of-service (QoS) control structure to enable flow Isolation and service differentiation over the common wireless network Interface. By specifying a particular set of service parameters, the media access control (MAC) mechanisms defined in the standard are capable of offering service guarantees on the connection basis. However, the design of efficient, flexible and yet bandwidth-saving scheduling algorithms for such QoS provisioning still remains an open topic. This paper proposes a new distributed QoS control scheme that guarantees particular service parameter settings for both uplink and downlink connections. Detailed simulation experiments are presented to study the performance and to validate the effectiveness of the proposed algorithm.