An Efficient Uplink Scheduling Algorithm with Variable Grant-Interval for VoIP Service in BWA Systems

Sung-Min OH; Sunghyun CHO; Jae-Hyun KIM; Jonghyung KWUN

doi:10.1093/ietcom/e91-b.10.3379

Regular Section

An Efficient Uplink Scheduling Algorithm with Variable Grant-Interval for VoIP Service in BWA Systems

Sung-Min OH, Sunghyun CHO, Jae-Hyun KIM, Jonghyung KWUN

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Keywords: uplink scheduling algorithm, AMR speech codec, IEEE 802.16e/m system, resource management

JOURNAL RESTRICTED ACCESS

2008 Volume E91.B Issue 10 Pages 3379-3382

DOI https://doi.org/10.1093/ietcom/e91-b.10.3379

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Abstract

This letter proposes an efficient uplink scheduling algorithm for the voice over Internet protocol (VoIP) service with variable frame-duration according to the voice activity in IEEE 802.16e/m systems. The proposed algorithm dynamically changes the grant-interval to save the uplink bandwidth, and it uses the random access scheme when the voice activity changes from silent-period to talk-spurt. Numerical results show that the proposed algorithm can increase the VoIP capacity by 26 percent compared to the conventional extended real-time polling service (ertPS).

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