Title:
SIGNALING MESSAGE TRANSMISSION IN A WIRELESS NETWORK BY MEANS OF A SELECTED SUBCARRIER OR AN ORTHOGONAL SEQUENCE IN THE TIME-FREQUENCY PLANE
Document Type and Number:
WIPO Patent Application WO/2009/120941
Kind Code:
A3
Abstract:
First technique (fig. 5) : a signalling message, e.g., a reduce interference request is sent by mapping it to at least one specific subcarrier (m) among a set of subcarriers reserved for sending the signalling message (0, 1, 2,..., m,..., M-1). The at least one subcarrier is selected based on the message value. A signal is then sent on the at least one subcarrier (m) in multiple symbol periods to convey the signalling message. Second technique (fig. 6) : a reduce interference request is sent by mapping it into an orthogonal sequence {uθ, ul,..., uM-1} of length M, among a set of M orthogonal sequences. The sequence is selected based on the message value. The sequence is sent on a resource segment, formed by T symbol periods and N subcarriers, wherein T*N=M. Third technique (fig. 7) : a reduce interference request is processed to obtain modulation symbols, and each modulation symbol is then spread, by means of a known reference signal sequence r(n), across multiple subcarriers in one symbol period.
Inventors:
PALANKI RAVI (US)
GOROKHOV ALEXEI Y (US)
GOROKHOV ALEXEI Y (US)
Application Number:
PCT/US2009/038526
Publication Date:
December 09, 2010
Filing Date:
March 27, 2009
Export Citation:
Assignee:
QUALCOMM INC (US)
PALANKI RAVI (US)
GOROKHOV ALEXEI Y (US)
PALANKI RAVI (US)
GOROKHOV ALEXEI Y (US)
International Classes:
H04L27/10; H04L5/00; H04L27/30; H04W52/24; H04L27/26; H04W52/28; H04W52/32
Domestic Patent References:
| WO2009036217A1 | 2009-03-19 | |||
| WO2008049136A1 | 2008-04-24 |
Foreign References:
| EP1542418A1 | 2005-06-15 |
Other References:
STANTCHEV B ET AL: "An integrated FSK-signaling scheme for OFDM-based advanced cellular radio", IEEE 47TH VEHICULAR TECHNOLOGY CONFERENCE (VTC), HELD IN PHOENIX, AZ, USA, vol. 3, 4 May 1997 (1997-05-04) - 7 May 2007 (2007-05-07), NEW YORK, NY, USA, pages 1629 - 1633, XP010229043, ISBN: 978-0-7803-3659-9
Attorney, Agent or Firm:
CORIE, Florin, C. (5775 Morehouse DriveSan Diego, CA, US)
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