Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2006-08-22
2009-08-11
Cho, Hong (Department: 2419)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S517000
Reexamination Certificate
active
07573907
ABSTRACT:
Packets for a discontinuous transmission of a speech signal via a packet switched network may be provided in shorter transmission intervals during an active state and in longer transmission intervals during an inactive state. The active state may be selected whenever a speech signal comprises a speech burst, optionally with a hangover period after a respective speech burst. For enhancing the control of an adaptive jitter buffer at a receiver at the beginning of a respective transmission session, an active state is enforced in addition for a predetermined period at a beginning of a transmission session, irrespective of a presence of speech bursts. In case hangover periods are used, the length of the predetermined period exceeds the length of these hangover periods.
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“Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Speech codec speech processing functions; Adaptive Multi-Rate—Wideband (AMR-WB) speech codec; Source controlled rate operation (3GPP TS 26.193 version 6.1.0 Release 6)”; ETSI Standards, European Telecommunications Standards Institute, Sophia Antipolis, FR, vol. 3-SA4, No. V610, Jun. 2006, XP014034359; pp. 1-22.
3GPP TS 26.171 V6.0.0, Dec. 2004; 3rdGeneration Partnership Project; Technical Specification Group Services and System Aspects; Speech codec speech processing functions; Adaptive Multi-Rate—Wideband (AMR-WB) speech codec; General description (Release 6).
3GPP TS 26.193 V6.1.0, Jun. 2006; 3rdGeneration Partnership Project; Technical Specification Group Services and System Aspects; Speech codec speech processing functions; Adaptive Multi-rate—Wideband (AMR-WB) speech codec; Source controlled rate operation (Release 6).
Cho Hong
Nokia Corporation
Ware Fressola Van Der Sluys & Adolphson LLP
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