Techniques for jitter buffer delay management

Details Techniques for jitter buffer delay management Techniques for jitter buffer delay management

2002-04-30

2009-02-24

Patel, Ajit (Department: 2617)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

Reexamination Certificate

active

07496086

ABSTRACT:
Techniques are provided to allow a jitter buffer to automatically reach a quiescent number of packets in the jitter buffer, based on current network conditions. Generally, no explicit jitter buffer delay is assumed, and a current packet is repeat played if no new packets are available in the jitter buffer. If there are too many packets in the jitter buffer, a newly received packet is discarded. When a packet is replayed, the delay associated with a jitter buffer is effectively increased. This is not an explicit jitter buffer delay, but, instead, there is an implicit delay associated with the jitter buffer. When a packet is discarded, the delay associated with a jitter buffer is effectively decreased. Again, this is an implicit jitter buffer delay. By repeat playing packets and discarding packets when the jitter buffer is full, an appropriate level of packets may be determined and maintained in the jitter buffer.

REFERENCES:
patent: 6064676 (2000-05-01), Slattery et al.
patent: 6101195 (2000-08-01), Lyons et al.
patent: 6370125 (2002-04-01), Belk
patent: 2005/0180405 (2005-08-01), Bastin
International Engineering Consortium, “Internet Telephony,” The International Engineering Consortium, Web ProForum Tutorials, http://www.iec.org, 1-16 (undated).
Unemoto et al., “Voice Synchronization Methods for Burst Rate Coded Voice,” NTT Telecommunication Networks Laboratories, IEEE 1879-1884, (1989).
Alvarez-Cuevas et al., “Voice Synchronization in Packet Switching Networks,” IEEE Networks Magazine 7, 5, 20-25 (Sep. 1993).
Ramjee et al., “Adaptive Playout Mechanisms for Packetized Audio Application in Wide-Area Networks,” IEEE INFOCOM, 680-688 (1994).
Ansari et al., “Compressed Voice in Integrated Services Frame Relay Networks: Voice Synchronization,” Proc. Canadian Conference on Electrical and Computer Engineering 1073-1076 (Sep. 1995).
Sanneck et al., “A New Technique for Audio Packet Loss Concealment,” Proc. of Global Internet 48-52 (1996).
Schulzrinne et al., “A Transport Protocol for Real-Time Applications,” Audio-Video Transport Working Group 1-75 (Jan. 1996).
ITU-T Recommendation G.114, “One-Way Transmission Time,” 1-12 (Feb. 1996).
Shenker et al., “General Characterization Parameters for Integrated Service Network Elements,” RFC 2215, Internet Engineering Task Force 1-15 (Sep. 1997).
Perkins et al., “A Survey of Packet Loss Recovery Techniques for Streaming Audio,” IEEE Network Magazine, 40-48 (Sep./Oct. 1998).
Yuval Boger, “Fine-tuning Voice over Packet Services,” Radcom Ltd., 1-20, (1998).
Moon et al., “Packet Audio Playout Delay Adjustment: Performance Bounds and Algorithms,” Department of Computer Systems, University of Massachusetts at Amherst, 1-35 (1998).
Telogy Networks, “Voice over IP (VoIP),” The Technology Guide Series techguide.com, The Applied Technologies Group, Inc., 1-44 (1998).
Tien et al., “Intelligent Voice Smoother for VBR Voice over ATM Networks,” Proc. INFOCOM, 841-848 (1998).
Kuo et al., “Delivering Voice over the Internet,” Proc. NCS, Workshop on Computer Network, 628-632 (1999).
Tien et al., “Intelligent Voice Smoother for Silence-Suppressed Voice over Internet,” IEEE Journal on Selected Areas in Communications, vol. 17, No. 1, 1764-1768 (Jan. 1999).
Binglin Li, “Telephonic Applications on Internet,” Department of Math and Computer Science, Kent State University,1-17 (May 1999).
Rosenberg et al., “Integrating Packet FEC into Adaptive Voice Playout Buffer Algorithms on the Internet,” INFOCOM,1-10 (2000).
Texas Instruments, “Voice and Fax over Internet Protocol (V/FoIP),” The International Engineering Consortium, Web ProForum Tutorials, http://www.iec.org, 1-30 (Jan. 12, 2000).
ITU-T Recommendation G.107, “The E-Model, a Computational Model for Use in Transmission Planning,” 1-16 (May 2000).
W. E. Witowsky, Texas Instruments, “Carrier-Class High Density Voice over Packet (VoP) Gateways,” The International Engineering Consortium, Web ProForum Tutorials, http://www.iec.org, 1-22 (Jan. 2001).
Liao et al., “Adaptive Recovery Techniques for Real-Time Audio Streams,” Proc. of IEEE INFOCOM, 815-823 (Apr. 2001).
Liang et al., “Adaptive Playout Scheduling Using Time-Scale Modification in Packet Voice Communications,” IEEE International Conference on Acoustics, Speech 1445-1448 (May 2001).
TERAbridge, “Voice Telephony over Asynchronous Transfer Mode (VToA),” The International Engineering Consortium, Web ProForum Tutorials, http://www.iec.org, 1-17 (Jul. 6, 2001).
Cisco IOS Release 12.1(5)T, “Playout Delay Enhancements for Voice over IP,” 1-20 (Oct. 29, 2001). “Voice Over Frame/IP,” downloaded from http://home.att.net/˜mcraycraft/wp.html on Dec. 17, 2001.
“Voice Over Frame/IP,” downloaded from http://home.att.net/˜mcraycraft/wp.html on Dec. 17, 2001.
“Voice over IP and IP Telephony: References,” downloaded from http://www.cis.ohio-state.edu/%7ejain/refs/ref—voip.htm on Dec. 18, 2001.
S. Pracht and D. Hardman, Agilent Technologies, “Voice Quality (VQ) in Converging Telephony and IP Networks,” The International Engineering Consortium, Web ProForum Tutorials, http://www.iec.org, 1-30, (2001).
Gil Biran, “Voice over Frame Relay, IP and ATM,” RAD Data Communications Ltd., downloaded from http://www.protocols.com/papers/voe.htm on Jan. 8, 2002.
“Voice over Internet Protocol (VoIP),” downloaded from http://www.whipper.uwc.ac.za/˜tpaulse/Masters/Summaries/voip.htm on Jan. 8, 2002.

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