Title:
RADIO TRANSMISSION DEVICE, AND RADIO TRANSMISSION METHOD
Document Type and Number:
WIPO Patent Application WO/2007/091675
Kind Code:
A1
Abstract:
Provided are a radio transmission device and a radio transmission method, which prevent
the deterioration of a preamble detecting performance while reducing the collision
probability of a RACH. In this radio transmission device, a Signature table storage
unit (103) divides the magnitudes of transmission loss levels into individual
levels corresponding to the distances from a base station, to cause CAZAC series
and circulation shift quantities to correspond to each other at the individual
levels, and is provided with a table containing a plurality of Signatures created
from the CAZAC series and the circulation shift quantities caused to correspond
to each other. A Signature selecting unit (104) selects one of the corresponding
Signatures at random from the Signature table storage unit (103), on the basis
of the magnitude of the transmission loss level outputted from a transmission
loss level deciding unit (102). A RACH signal generating unit (105) generates
the RACH signal with the Signature selected.
Inventors:
IWAI TAKASHI
IMAMURA DAICHI
MIYOSHI KENICHI
FUTAGI SADAKI
MATSUMOTO ATSUSHI
TAKATA TOMOFUMI
IMAMURA DAICHI
MIYOSHI KENICHI
FUTAGI SADAKI
MATSUMOTO ATSUSHI
TAKATA TOMOFUMI
Application Number:
PCT/JP2007/052357
Publication Date:
August 16, 2007
Filing Date:
February 09, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
IWAI TAKASHI
IMAMURA DAICHI
MIYOSHI KENICHI
FUTAGI SADAKI
MATSUMOTO ATSUSHI
TAKATA TOMOFUMI
IWAI TAKASHI
IMAMURA DAICHI
MIYOSHI KENICHI
FUTAGI SADAKI
MATSUMOTO ATSUSHI
TAKATA TOMOFUMI
International Classes:
H04B1/707; H04J13/10; H04W72/04
Foreign References:
| JP2002208880A | 2002-07-26 |
Other References:
"Orthogonal Pilot Channel Structure in E-UTRA Uplink", NTT DOCOMO, NEC, SHARP, 3GPP TSG-RAN WG1 LTE AD HOC MEETING R1-060046, 25 January 2006 (2006-01-25), pages 1 - 8, XP003016776, Retrieved from the Internet
"Performance of CAZAC pilot sequence for D-FDMA and L-FDMA with Frequency Hopping for EUTRA Uplink", NEC GROUP, 3GPP TSG-RAN WG1 LTE AD HOC MEETING R1-060060, 25 January 2006 (2006-01-25), XP003016777, Retrieved from the Internet
"Performance of CAZAC pilot sequence for D-FDMA and L-FDMA with Frequency Hopping for EUTRA Uplink", NEC GROUP, 3GPP TSG-RAN WG1 LTE AD HOC MEETING R1-060060, 25 January 2006 (2006-01-25), XP003016777, Retrieved from the Internet
Attorney, Agent or Firm:
WASHIDA, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki 1-chom, Tama-shi Tokyo, JP)
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