Title:
BASE STATION, MOBILE STATION AND METHOD
Document Type and Number:
WIPO Patent Application WO/2006/134947
Kind Code:
A1
Abstract:
A base station comprises a chip repetition means that receives, decodes and time non-compresses a signal transmitted in VSCRF-CDMA format; a memory that stores a hopping pattern that is different from the hopping pattern used in an adjacent cell; and a means that notifies two or more mobile stations, which are existent in the local cell, of the hopping pattern stored in the memory. The hopping pattern is such a pattern that orthogonalizes the uplink channels of the two or more mobile stations in the frequency direction and/or the time direction. Each mobile station comprises a means that encodes, time compresses and duplicates the signal transmitted in VSCRF-CDMA format; and a means that maps and transmits the uplink channel by use of the hopping pattern notified of by the base station.
Inventors:
SAWAHASHI MAMORU (JP)
HIGUCHI KENICHI (JP)
HIGUCHI KENICHI (JP)
Application Number:
PCT/JP2006/311876
Publication Date:
December 21, 2006
Filing Date:
June 13, 2006
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
SAWAHASHI MAMORU (JP)
HIGUCHI KENICHI (JP)
SAWAHASHI MAMORU (JP)
HIGUCHI KENICHI (JP)
International Classes:
H04B1/707; H04B1/713; H04B1/7143; H04W16/02; H04W72/04; H04W76/00; H04W76/02
Domestic Patent References:
| WO2004038972A1 | 2004-05-06 |
Foreign References:
| JP2004297756A | 2004-10-21 | |||
| JP2001516541A | 2001-09-25 | |||
| JP2005252886A | 2005-09-15 |
Other References:
GOTO Y. ET AL.: "Agari Link Kahen Kakusanritsu Chip Kurikaeshi Factor (VSCRF-CDMA) Musen Access no Multi-Cell Kankyo ni Okeru Tokusei Hyoka. (Investigations on Packet Error Rate of Variable Spreading and chip Repetition Factors (VSCRF)-CDMA Wireless Access in Reverse Link Multi-cell Environment)", IEICE TECHNICAL REPORT, RCS2004-84, vol. 104, no. 123, 11 June 2004 (2004-06-11), pages 49 - 54, XP003004690
GOTO Y. ET AL.: "Agari Link Kahen Kakusanritsu Chip Kurikaeshi Factor (VSCRF-CDMA) Broadband Musen Access ni Okeru Ta-Cell Kansho no Yokuatsu Koka. (Suppression Effect of Other-cell Interference on VSCRF-CDMA in reverse Link for Broadband Wireless Access)", 2004 NEN THE INSTITUTE OF ELECTRONICS, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS SOGO TAIKAI KOEN RONBUNSHU, COMMUNICATION 1, 8 March 2004 (2004-03-08), pages 637, XP003004691
GOTO Y. ET AL.: "Agari Link Kahen Kakusanritsu Chip Kurikaeshi Factor (VSCRF-CDMA) Broadband Musen Access ni Okeru Ta-Cell Kansho no Yokuatsu Koka. (Suppression Effect of Other-cell Interference on VSCRF-CDMA in reverse Link for Broadband Wireless Access)", 2004 NEN THE INSTITUTE OF ELECTRONICS, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS SOGO TAIKAI KOEN RONBUNSHU, COMMUNICATION 1, 8 March 2004 (2004-03-08), pages 637, XP003004691
Attorney, Agent or Firm:
Itoh, Tadahiko (Yebisu Garden Place Tower 20-3, Ebisu 4-Chome, Shibuya-K, Tokyo 32, JP)
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