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http://dx.doi.org/10.7840/KICS.2012.37.7B.528

Active Buffer Management Algorithm for Voice Communication System with Silence Suppression  

Lee, Sung-Hyung (아주대학교 전자공학과 무선인터넷연구실)
Lee, Hyun-Jin (아주대학교 전자공학과 무선인터넷연구실)
Kim, Jae-Hyun (아주대학교 전자공학부)
Lee, Hyung-Joo (국방과학연구소)
Hoh, Mi-Jeong (국방과학연구소)
Choi, Jeung-Won (국방과학연구소)
Shin, Sang-Heon (삼성탈레스)
Kim, Tae-Wan (삼성탈레스)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.7B, 2012 , pp. 528-535 More about this Journal
Abstract
This paper proposes silence drop first(SDF) active buffer management algorithm to increase the voice capacity when silence suppression is used. This algorithm finds and drops silence packet rather than voice packet in the queue for resolving buffer overflow of queue. Simulations with voice codec of G.729A and G.711 are performed. By using proposed SDF algorithm, the voice capacity is increased by 84.21% with G.729A and 38.46% with G.711. Further more, SDF algorithm reduces the required link capacity and loosens the silence packet inter-arrival time limit to provide target voice quality compared with that of conventional algorithms.
Keywords
Buffer Management; Queue Management; VoIP; Silence Suppression; Congestion Control;
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