Invention Grant
EP1013020B1 Method and apparatus for providing orthgonal spot beams, sectors, and picocells
有权
对于正交波束,扇区,小区和微微小区的供给方法和装置
- Patent Title: Method and apparatus for providing orthgonal spot beams, sectors, and picocells
- Patent Title (中): 对于正交波束,扇区,小区和微微小区的供给方法和装置
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Application No.: EP98948118.9Application Date: 1998-09-08
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Publication No.: EP1013020B1Publication Date: 2007-02-07
- Inventor: LUNDBY, Stein, A. , ODENWALDER, Joseph, P. , TIEDEMANN, Edward, G., Jr.
- Applicant: QUALCOMM INCORPORATED
- Applicant Address: 5775 Morehouse Drive San Diego, CA 92121-1714 US
- Assignee: QUALCOMM INCORPORATED
- Current Assignee: QUALCOMM INCORPORATED
- Current Assignee Address: 5775 Morehouse Drive San Diego, CA 92121-1714 US
- Agency: Wagner, Karl H.
- Priority: US925521 19970908
- International Announcement: WO1999013605 19990318
- Main IPC: H04J11/00
- IPC: H04J11/00 ; H04B7/26 ; H04B1/707
Abstract:
A method and apparatus for providing orthogonal spot beams (14a, 14b), sectors (16a, 16b), and picocells (18). The transmissions can be made orthogonal by using orthogonal auxiliary pilots and different Walsh traffic channels in adjacent areas. In accordance with the IS-95 standard, the pilot signal is covered with the 64-chip Walsh sequence zero. The 64-chip all zeros Walsh sequence can be designated as P and the 64-chip all one sequence can be designated as M. In the present invention, additional pilot signals can be provided by concatenating 64-chip all zeros P and all ones M sequences. Thus, for two pilot signals, pilot Walsh sequences of PP and PM can be used. For four pilot signals, pilot Walsh sequences of PPPP, PMPM, PPMM, and PMMP can be used. The present invention can be extended such that any required number of pilot Walsh sequences can be generated by substituting each bit in an K-bit Walsh sequence with the 64-chip all zeros P or all ones M sequence depending on the value of that bit.
Public/Granted literature
- EP1013020A1 METHOD AND APPARATUS FOR PROVIDING ORTHOGONAL SPOT BEAMS, SECTORS, AND PICOCELLS Public/Granted day:2000-06-28
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