Radio transmitting apparatus and radio transmitting method

Details Radio transmitting apparatus and radio transmitting method Radio transmitting apparatus and radio transmitting method

2007-08-02

2011-12-20

Ngo, Ricky (Department: 2464)

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

C370S350000

Reexamination Certificate

active

08081617

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.

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patent: 7103027 (2006-09-01), Dick
patent: 2005/0075125 (2005-04-01), Bada et al.
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patent: 2002-533008 (2002-10-01), None
International Search Report dated Aug. 28, 2007.
3GPP TSG-RAN WG1 LTE Ad Hoc Meeting, R1-060046, Helsinki, Finland, Jan. 23-25, 2006, Source: NTT DoCoMo, NEC, Sharp, Title: “Orthogonal Pilot Channel Structure in E-UTRA Uplink,” Agenda Item: 5.2.2.2, pp. 1-8.
TSG-RAN WG1 Meeting #46, R1-062175, Tallinn, Estonia, Aug. 28-Sep. 1, 2006, Source: Panasonic, NTT DoCoMo, Title: “Random access burst design for E-UTRA Agenda,” Item: 8.3.1 Document for: Discussion and Decision, pp. 1-9.

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