Methods for synchronizing in a wide band code division...

Details Methods for synchronizing in a wide band code division... Methods for synchronizing in a wide band code division...

2002-04-08

2008-11-04

D'Agosta, Stephen M (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S324000, C370S350000, C455S013200, C455S434000, C455S435100, C455S435200, C455S502000, C455S503000

Reexamination Certificate

active

07447179

ABSTRACT:
The invention discloses a method that implements synchronization for a WCDMA system. The method introduces a globe synchronization time to the WCDMA system as a reference time for signal transmitting of all NodeBs; when searching adjacent cells or making handover, each UE takes this reference time as a reference time; in this way, the UE design complexity is reduced, the UE available time is increased, the handover signaling is simplified and the handover success and reliability are increased too. Therefore, the method increases system capacity and makes service quality better.

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Universal Mobile Telecommunications System (UMTS); Synchronization in UTRAN Stage 2 (3GPP TS 25.402 version 3.6.0 Release 1999); ETSI TS 125 402, ETSI Standards, European Telecommunications Standards Institute, Sophia-Antipo, FR, vol. 3-R3, No. V360, Jun. 2001, XP014008853; ISSN 0000-0001, paragraph ‘6.1.2.2!’ figures 1,6,15*; p. 17, line 10-line 11* p. 17, line 15-line 20* paragraph '8.2.2!* relevant to claims 1, 2, 16.
Siemens: “Compressed Mode for seamless Hard Handover” TSG-RAN Working Group 1 Meeting #11, ′Online! Feb. 29, 2000-Mar. 3, 2000 pp. 1-5, XP 002339596, San Diego USA, retrieved from the Internet: URL:http://www.3gpp.org/ftp/TSG—RAN/WG1—RL1/TSGR1—11/Docs/Zips/R1-00-0305.zip> 'retrieved on Aug. 9, 2005! *paragraph '4.3.2!* *p. 1, paragraph 3* relevant to claims 3 and 6-13.
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