Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2001-06-12
2010-06-15
Beamer, Temica M (Department: 2617)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S512000, C370S514000, C455S502000
Reexamination Certificate
active
07738506
ABSTRACT:
The present invention relates to a method for synchronization of real-time signals between core network and air interface in a UMTS Terrestrial Radio Access Network (UTRAN). The synchronization of the signals is needed to make a feasible connection between user equipment and a core network. This is achieved by using the timing knowledge from the protocols that are to be synchronized, and recalculating synchronization parameters for both uplink and downlink transmission. By using frame numbers instead of time of arrivals of frames, the present invention gives better control of timing and avoids long delays, and handles the problems with time alignments.
REFERENCES:
patent: 7023835 (2006-04-01), Terry
patent: 2001/0046240 (2001-11-01), Longoni et al.
patent: 01/01596 (2001-01-01), None
patent: 01/30103 (2001-04-01), None
Tech Spec., 3GPP TS 25.415 V4.7.0, 3rdGeneration Partnership Project; Technical Specification Group Radio Access Netowrk; UTRAN lu Interface User Plane Protocols (Release 4), Dec. 2002.
Tech Spec., 3GPP TS 25.420 V3.10.0, 3rdGeneration Partnership Project; Technical Specification Group Radio Access Netowrk; Synchronisation in UTRAN Stage 2 (Release 1999), Jun. 2002.
Tech Spec., 3GPP TS 25.427 V4.4.0, 3rdGeneration Partnership Project; Technical Specification Group Radio Access Netowrk; UTRAN lub/lur Interface User Plane Protocol for DCH Data Streams (Release 4), Dec. 2002.
Beamer Temica M
Nixon & Vanderhye PC
Telefonaktiebolaget LM Ericsson
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