Multiplex communications – Communication over free space – Combining or distributing information via time channels
Reexamination Certificate
2011-03-08
2011-03-08
Nguyen, Brian D (Department: 2472)
Multiplex communications
Communication over free space
Combining or distributing information via time channels
C370S335000, C370S503000
Reexamination Certificate
active
07903633
ABSTRACT:
Schemes to time-align transmissions from multiple base stations to a terminal. To achieve time-alignment, differences between the arrival times of transmissions from the base stations, as observed at the terminal, are determined and provided to the system and used to adjust the timing at the base stations such that terminal-specific radio frames arrive at the terminal within a particular time window. In one scheme, a time difference between two base stations is partitioned into a frame-level time difference and a chip-level time difference. Whenever requested to perform and report time difference measurements, the terminal measures the chip-level timing for each candidate base station relative to a reference base station. Additionally, the terminal also measures the frame-level timing and includes this information in the time difference measurement only if required. Otherwise, the terminal sets the frame-level part to a predetermined value (e.g., zero).
REFERENCES:
patent: 5872774 (1999-02-01), Wheatley
patent: 6094421 (2000-07-01), Scott
patent: 6208871 (2001-03-01), Hall et al.
patent: 6259683 (2001-07-01), Sekine
patent: 6344821 (2002-02-01), Norimatsu
patent: 6430413 (2002-08-01), Wedi et al.
patent: 6483825 (2002-11-01), Seta
patent: 6526039 (2003-02-01), Dahlman
patent: 6665540 (2003-12-01), Rantalainen et al.
patent: 6681099 (2004-01-01), Keranen et al.
patent: 6711149 (2004-03-01), Yano et al.
patent: 6775242 (2004-08-01), Grilli et al.
patent: 6892071 (2005-05-01), Park et al.
patent: 6947757 (2005-09-01), Pihl et al.
patent: 6980615 (2005-12-01), Dick et al.
patent: 7047011 (2006-05-01), Wikman
patent: 7209463 (2007-04-01), Park et al.
patent: 7254401 (2007-08-01), Keranen et al.
patent: 2001/0051527 (2001-12-01), Kuwahara et al.
patent: 2003/0117997 (2003-06-01), Kim
patent: 2003/0210713 (2003-11-01), Abdel-Ghaffar
patent: 9941854 (1999-08-01), None
patent: 0014907 (2000-03-01), None
patent: WO0041907 (2000-07-01), None
International Search Report—PCT/US2002/021781, International Search Authority—European Patent Office, Nov. 5, 2002.
3GPP TS 25.133 V3.4.0 (Dec. 2000) Release 1999; Technical Specification Group Radio Access Networks; “Requirements for Support of Radio Resource Management” (FDD).
3GPP TS 25.215 v4.1.0 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Physical Layer—Measurements (FDD) (Release 4) 3GPP 25.215 v4.1.0 Jun. 2001, pp. 1-18.
3GPP TS 25.305 V5.1.0 (Jun. 2001) Release 5; Technical Specification Group Radio Access Network; Stage 2 Functional Specification of UE Positioning in UTRAN.
3GPP TS 25.331 V4.1.0 (Jun. 2001) Release 4; Technical Specification Group Access Network; “Radio Resource Control Protocol Specification”.
3GPP TS 25.331, Section 10.3.7.63 “SFN-SFN Observed Time Difference”.
3GPP TS 25.331, Section 10.3.7.106. “UE Positioning OTDOA Neighbor Cell Info”.
3GPP TS 25.402, Section 5, Universal Mobile Telecommunications System (UMTS); Sunchronization in UTRAN Stage 2 (3GPP TS 25.402 Version 4.1.0 Release 4) ETSI TS 125.402; Jun. 2001, pp. 1-44.
3GPP TS 25.433 V4.0.0 (Mar. 2001) Release 4; Technical Specification Group Radio Access Network; “UTRAN lub Interface NBAP Signaling”.
Wheatley, Chuck; Self-Synchronizing A CDMA Cellular Network, Microwave Journal, May 1999, 320-328.
International Preliminary Examination Report—PCT/US02/021781, IPEA/US, Alexandria, VA Nov. 9, 2003.
European Search Report/Search Opinion—EP07017457 -Search Authority, Munich, Nov. 18, 2009.
“Universal Mobile Telecommunication System (UMTS); Requirements for Support of Radio Resource Management (FDD) (3GPP TS 25 133 version 4.1.0 Release 4); ETSI TS 125 133” ETSI Stds, Lis, Sophia Antipolis Cedex, France, vol. 3-R4, No. V4.1.0, Jun. 1, 2001, XP014008230 ISSN: 0000-0001, 9. Measurements Performance Requirements, 9.1.8 SFN-SFN observed time difference.
Grilli Francesco
Subrahmanya Parvathanathan
Wheatley III Charles E.
Willenegger Serge D.
Nguyen Brian D
Qualcomm Incorporated
Tam Kam T.
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