Dynamic Bandwidth Allocation for QoS Provisioning in IEEE 802.16 Networks with ARQ-SA

Author

Wang, Weiwei ; Guo, Zihua ; Xuemin Shen ; Chen, Changjia ; Cai, Jun

Author_Institution

Sch. of Electron. & Inf. Eng., Beijing Jiaotong Univ., Beijing

Volume

7

Issue

9

fYear

2008

fDate

9/1/2008 12:00:00 AM

Firstpage

3477

Lastpage

3487

Abstract

In this paper, bandwidth allocation, in terms of distributing available data slots among different users, is studied for QoS provisioning in IEEE 802.16 networks. By considering the automatic repeat request with selective acknowledgement (ARQ-SA) scheme for erroneous wireless channels, a mathematical model is established to theoretically analyze the delay performance of transmitting service data unit (SDU) under a multiuser environment. The analytical results indicate that the delivery delay of the SDU is dominated by the time spent for the first transmission of all its protocol data units (PDUs). Based on this observation, a novel dynamic bandwidth allocation algorithm is proposed and a detailed performance analysis is provided. Simulation results show that the proposed bandwidth allocation algorithm can significantly improve the delay performance of SDUs and ensure the fairness among different users.

Keywords

WiMax; automatic repeat request; bandwidth allocation; quality of service; IEEE 802.16 networks; WiMax; automatic repeat request; bandwidth allocation; delivery delay; protocol data units; quality of service; selective acknowledgement; service data unit; Automatic repeat request; Channel allocation; Delay effects; Mathematical model; Performance analysis; Physical layer; Portable media players; Protocols; WiMAX; Wireless communication; ARQ-SA; IEEE 802.16; PDU; SDU; WiMAX; bandwidth allocation;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2008.070277

Filename

4626321