Bandwidth Allocation Algorithm of VoIP Based on the Adaptive Linear Prediction in the IEEE 802.16 System

Author

Yanfeng, Guan ; Aiqun, Hu

Author_Institution

Res. Center of Inf. Security, Southeast Univ., Nanjing

fYear

2006

fDate

38869

Firstpage

16

Lastpage

19

Abstract

This paper points out the factor that affects the VoIP ( voice over IP ) capacity under the PMP ( point-to-multipoint) mode in the IEEE 802.16 system. By theoretically analyzing the statistical characteristics of VoIP data streams, we propose a new bandwidth allocation algorithm and implement it based on the adaptive linear prediction, which can remarkably reduce the bandwidth waste resulted from UGS (unsolicited grant service) specified in the IEEE 802.16 standard and overcome the conservative nature of effective bandwidth. Simulation results show that this algorithm can improve VoIP capacity up to 150% and 50% compared with UGS and effective bandwidth, respectively. In addition, the packet loss rate and transfer delay are 1.4% and 5.1ms below between BS (base station) and SS (subscriber station) Respectively

Keywords

IEEE standards; Internet telephony; WiMax; bandwidth allocation; media streaming; prediction theory; statistical analysis; IEEE 802.16 system; PMP; UGS; VoIP; adaptive linear prediction; bandwidth allocation algorithm; base station; data stream; point-to-multipoint mode; statistical analysis; subscriber station; unsolicited grant service; voice-over-IP; Bandwidth; Channel allocation; Information security; Internet telephony; Markov processes; Portable media players; Predictive models; Quality of service; Streaming media; Traffic control; 802.16; UGS; VoIP; adaptive; capacity;

fLanguage

English

Publisher

ieee

Conference_Titel

ITS Telecommunications Proceedings, 2006 6th International Conference on

Conference_Location

Chengdu

Print_ISBN

0-7803-9587-5

Electronic_ISBN

0-7803-9587-5

Type

conf

DOI

10.1109/ITST.2006.288750

Filename

4068519