Title:
RADIO TERMINAL AND RADIO BASE STATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/053930
Kind Code:
A1
Abstract:
A radio terminal and a radio base station device which can increase the number of
terminal stations to which different codes can be assigned when encoding control signals
transmitted by a plurality of terminal stations in an uplink for each terminal
station.The radio terminal comprises a code information receiving section
(15) for receiving code information to be used in its own terminal station from
a base station, a phase shift unit for phase-shifting a first code having a constant
amplitude and no autocorrelation according to the received code information, a
code acquiring unit for acquiring a second code out of codes which orthogonally intersect
each other according to the received code information, and a control signal coding
section (14) having a coding unit for coding the control signals transmitted
to the base station by using the first and second codes after the phase-shifting.
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Inventors:
YAMAMOTO TOSHIAKI (JP)
LU FENG (JP)
SUZUKI TOSHINORI (JP)
LU FENG (JP)
SUZUKI TOSHINORI (JP)
Application Number:
PCT/JP2007/071246
Publication Date:
May 08, 2008
Filing Date:
October 31, 2007
Export Citation:
Assignee:
KDDI CORP (JP)
YAMAMOTO TOSHIAKI (JP)
LU FENG (JP)
SUZUKI TOSHINORI (JP)
YAMAMOTO TOSHIAKI (JP)
LU FENG (JP)
SUZUKI TOSHINORI (JP)
International Classes:
H04B1/707; H04J13/00; H04J13/18; H04W24/10; H04W72/04; H04W76/04; H04W88/02
Foreign References:
| JPH08288927A | 1996-11-01 |
Other References:
NTT DOCOMO, ERICSSON, FUJITSU, MITSUBISHI ELECTRIC, SHARP, TOSHIBA CORPORATION: "CDM-based Multiplexing Method of Multiple ACK/NACK and CQI for E-UTRA Uplink", 3GPP TSG RAN WG1 MEETING #46BIS, vol. R1-062742, 4 October 2006 (2006-10-04), XP003022101, Retrieved from the Internet
KDDI, NTT DOCOMO: "L1/L2 Control Channel Structure with CDM Based Multiplexing in E-UTRA Downlink", 3GPP TSG RAN WG1 #46BIS, vol. R1-062805, 4 October 2006 (2006-10-04), XP003022095, Retrieved from the Internet
KDDI: "Scrambling Code for L1/L2 Control Channel with CDM Based Multiplexing in E-UTRA Downlink", 3GPP TSG RAN WG1 MEETING #46BIS, vol. R1-062945, 4 October 2006 (2006-10-04), XP003022096, Retrieved from the Internet
KDDI, NTT DOCOMO: "L1/L2 Control Channel Structure with CDM Based Multiplexing in E-UTRA Downlink", 3GPP TSG RAN WG1 #46BIS, vol. R1-062805, 4 October 2006 (2006-10-04), XP003022095, Retrieved from the Internet
KDDI: "Scrambling Code for L1/L2 Control Channel with CDM Based Multiplexing in E-UTRA Downlink", 3GPP TSG RAN WG1 MEETING #46BIS, vol. R1-062945, 4 October 2006 (2006-10-04), XP003022096, Retrieved from the Internet
Attorney, Agent or Firm:
TANAI, Sumio et al. (YaesuChuo-ku, Tokyo 53, JP)
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