Title:
LOW COMPLEXITY UNIFIED CONTROL CHANNEL PROCESSING
Document Type and Number:
WIPO Patent Application WO/2011/005532
Kind Code:
A3
Abstract:
Systems and methodologies are described that facilitate unified, low-complexity processing (e.g., user separation and noise estimation) of a control channel. One or more UEs can respectively transmit one or more control signals, which are multiplexed on a control channel and a base station can receive a control channel signal that includes the one or more control signals. The base station, in a single pass, can separate the control signals by matching the control channel signal with a base sequence and translating the matched signal to a time-domain representation. In the time-domain representation, each control signal resides at a different tap. Further, the base station can identify taps of the time-domain representation corresponding to an unused cyclic shift or orthogonal cover sequence. Such taps can be employed to generate a noise and/or interference estimate.
Inventors:
WANG RENQIU (US)
XU HAO (US)
XU HAO (US)
Application Number:
PCT/US2010/039519
Publication Date:
April 07, 2011
Filing Date:
June 22, 2010
Export Citation:
Assignee:
QUALCOMM INC (US)
WANG RENQIU (US)
XU HAO (US)
WANG RENQIU (US)
XU HAO (US)
International Classes:
H04L27/26; H04J11/00; H04J13/00; H04L5/00
Domestic Patent References:
| WO2008149314A2 | 2008-12-11 | |||
| WO2008025373A1 | 2008-03-06 | |||
| WO2009057483A1 | 2009-05-07 |
Foreign References:
| US20090068956A1 | 2009-03-12 | |||
| EP2101417A2 | 2009-09-16 | |||
| US20070036064A1 | 2007-02-15 |
Other References:
NEC GROUP: "Definition of cyclic shift in code division multiplexing", 3GPP TSG RAN WG1 MEETING 47, RIGA, vol. R1-063202, no. 47, 6 November 2006 (2006-11-06), pages 1 - 4, XP002505590
ETRI: "Cyclic-shift hopping for uplink sounding reference signal", 3GPP DRAFT; R1-070748, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. St. Louis, USA; 20070206, 6 February 2007 (2007-02-06), XP050104778
ETRI: "Cyclic-shift hopping for uplink sounding reference signal", 3GPP DRAFT; R1-070748, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. St. Louis, USA; 20070206, 6 February 2007 (2007-02-06), XP050104778
Attorney, Agent or Firm:
ZOHN, Nerrie M. (San Diego, California, US)
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