ABSTRACT
CONTENTS 10.1 Introduction ............................................................................................. 195 10.2 System Model .......................................................................................... 197 10.3 Routing and Scheduling for Aggregate Traffic .................................. 199 10.4 QoS for Real-Time Traffic ...................................................................... 204
10.4.1 Scheduling of CBR Traffic ....................................................... 205 10.4.2 Scheduling of VBR Traffic ....................................................... 206
10.5 QoS for TCP Traffic ................................................................................. 207 10.6 Joint Scheduling of UDP and TCP Flows ............................................ 211 10.7 Simulations .............................................................................................. 213 10.8 Admission Control ................................................................................. 215 10.9 Conclusions ............................................................................................. 216 Acknowledgments ............................................................................................. 217 References ........................................................................................................... 217
IEEE 802.16 standard [1], also known as WiMAX has been specifically designed to provide wireless broadband access in the metropolitan area network (MAN), delivering performance comparable to traditional cable, digital subscriber line (DSL), or T1 offerings. To provide the coverage and data rates envisioned, even or uneven terrain, the use of multihop communication seems desirable. Hence, WiMAX supports a mesh mode (the other mode being point-to-multipoint (PMP)) in which unlike the traditional cellular systems, the nodes can communicate without having a direct connection with the base station (BS).
