Title:
RADIO TRANSMITTING APPARATUS AND RADIO TRANSMITTING METHOD
Document Type and Number:
WIPO Patent Application WO/2008/016112
Kind Code:
A1
Abstract:
A radio transmitting apparatus and a radio transmitting method wherein the interference
between codes can be reduced and the degradation of preamble detection capability
can be prevented. According to these apparatus and method, a signature table
storing part (103) that stores a table including a plurality of signatures obtained
by classifying the magnitudes of propagation loss levels into levels in accordance
with the distances from a base station, associating preamble detection window
widths with those levels as classified, and by circularly shifting the pattern
of a detection window signature #n corresponding to a signature #n to generate
a signature #n+1. A signature selecting part (104) selects, based on the magnitude
of a propagation loss level outputted by a propagation loss level determining
part (102), one of the corresponding signatures from the signature table storing
part (103) at random. A RACH signal generating part (105) uses the selected signature
to generate a RACH signal.
Inventors:
IWAI TAKASHI
FUTAGI SADAKI
IMAMURA DAICHI
MATSUMOTO ATSUSHI
OGAWA YOSHIHIKO
FUTAGI SADAKI
IMAMURA DAICHI
MATSUMOTO ATSUSHI
OGAWA YOSHIHIKO
Application Number:
PCT/JP2007/065184
Publication Date:
February 07, 2008
Filing Date:
August 02, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
IWAI TAKASHI
FUTAGI SADAKI
IMAMURA DAICHI
MATSUMOTO ATSUSHI
OGAWA YOSHIHIKO
IWAI TAKASHI
FUTAGI SADAKI
IMAMURA DAICHI
MATSUMOTO ATSUSHI
OGAWA YOSHIHIKO
International Classes:
H04B1/707; H04J13/00; H04J13/16; H04J13/18; H04W74/08; H04J13/10; H04W48/08; H04W56/00; H04W72/04; H04W76/02
Foreign References:
| JP2002208880A | 2002-07-26 | |||
| JP2002533008A | 2002-10-02 | |||
| JP2006212546A | 2006-08-17 |
Other References:
NTT DOCOMO ET AL.: "Orthogonal Pilot Channel Structure in E-UTRA Uplink", 3GG TSG-RAN WG1 LTE AD HOC MEETING, vol. R1-060046, - 25 January 2006 (2006-01-25), XP003017002, Retrieved from the Internet
PANASONIC ET AL.: "Random access burst design for E-UTRA", 3GPP TSG-RAN WG1 MEETING #46, vol. R1-062175, 1 September 2006 (2006-09-01), XP002422894, Retrieved from the Internet
"Orthogonal Pilot Channel Structure in E-UTRA Uplink", 3GPP, R1-060046, NTT DOCOMO
PANASONIC ET AL.: "Random access burst design for E-UTRA", 3GPP TSG-RAN WG1 MEETING #46, vol. R1-062175, 1 September 2006 (2006-09-01), XP002422894, Retrieved from the Internet
"Orthogonal Pilot Channel Structure in E-UTRA Uplink", 3GPP, R1-060046, NTT DOCOMO
Attorney, Agent or Firm:
WASHIDA, Kimihito (Shintoshicenter Bldg. 24-1, Tsurumaki1-chome, Tama-sh, Tokyo 34, JP)
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