Contention Based Negative Feedback ARQ for VoIP Services in IEEE 802.16 Networks

Author

Perera, Shehan ; Sirisena, Harsha

Volume

2

fYear

2006

fDate

Sept. 2006

Firstpage

1

Lastpage

6

Abstract

In this paper retransmission strategies for real-time services over IEEE 802.16 networks are investigated. This is done in the context of VoIP using unsolicited grant service (UGS) scheduling. A mathematical model is derived for the case where the downlink channel remains constant. Automatic Repeat Request (ARQ) is analyzed in terms of bandwidth usage on the downlink as well as the uplink. A new ARQ scheme is proposed and analyzed in terms of the performance metrics packet loss rate, packet delay and link efficiency. Constraints and limitations of the scheme are also discussed.

Keywords

Internet telephony; WiMax; automatic repeat request; scheduling; ARQ; IEEE 802.16 network; UGS scheduling; VoIP service; WiMax; automatic repeat request; contention based negative feedback; downlink channel; mathematical model; packet delay; packet loss rate; performance metrics; unsolicited grant service; voice over Internet protocol; Access protocols; Automatic repeat request; Bandwidth; Decoding; Delay; Downlink; Media Access Protocol; Negative feedback; Quality of service; WiMAX; ARQ; IEEE802.16; real-time services;

fLanguage

English

Publisher

ieee

Conference_Titel

Networks, 2006. ICON '06. 14th IEEE International Conference on

Conference_Location

Singapore

ISSN

1556-6463

Print_ISBN

0-7803-9746-0

Type

conf

DOI

10.1109/ICON.2006.302666

Filename

4087737