Grouping voice frames from multiple calls into a single packet as a means to reduce bandwidth requirement for IP voice calls is investigated. It is demonstrated that TCP-style Internet delay prediction can he instrumental to regulate the number of frames in each packet in a manner to minimize late losses of the frames under fast undulating Internet delay. The performance of the adaptive scheme is compared against those of fixed grouping cases with varying degrees of aggressiveness.
Bibliographical noteFunding Information:
Manuscript received October 5, 2001. The associate editor coordinating the review of this letter and approving it for publication was Prof. C. Douligeris. This work was supported by Korea Science and Engineering Foundation under Interdisciplinary Research Grant R01-2001-00339. H. Kim and E. Hwang are with the School of Information and Communication, Ajou University, Suwon 442-749, Korea (e-mail: hyogon@ madang.ajou.ac.kr). I. Kang is with Samsung SECUi.com, Seoul 100-130, Korea. Publisher Item Identifier S 1089-7798(02)01931-2.
- Frame grouping
- Internet telephony
- TCP delay estimation
ASJC Scopus subject areas
- Modelling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering