Title:
SYSTEM AND COMMUNICATION METHOD
Document Type and Number:
Japanese Patent JP2022058648
Kind Code:
A
Abstract:
To provide a terminal device, a random access preamble transmission method, and an integrated circuit that reduce the amount of calculation and circuit scale of a correlation circuit on the receiving side in a system in which a plurality of different Zadoff-Chu series or GCL series are assigned to one cell.SOLUTION: In ST201, a counter a and a current series allocation number p are initialized, and in ST202, it is determined whether the current series allocation number p matches the allocation number K to one cell. In ST203, it is determined whether the allocation number K the one cell is odd or even, and when K is even, the unallocated series numbers r=a and r=N-a are combined and assigned in ST204 to ST206. When K is an odd number, either the unallocated series number r=a or r=N-a is assigned to the series that cannot be paired in ST207 to ST212. In this way, each element of the series combines and allocates series numbers having a complex conjugate relationship.SELECTED DRAWING: Figure 4
Inventors:
IMAMURA DAICHI
IWAI TAKASHI
IGAI KAZUNORI
FUTAKI SADAKI
MATSUMOTO ATSUSHI
IWAI TAKASHI
IGAI KAZUNORI
FUTAKI SADAKI
MATSUMOTO ATSUSHI
Application Number:
JP2022005726A
Publication Date:
April 12, 2022
Filing Date:
January 18, 2022
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
H04J13/22; H04J13/00; H04J13/16; H04L27/26; H04W72/04; H04W74/08; H04B1/707; H04J13/10
Domestic Patent References:
| JP2001230703A | 2001-08-24 | |||
| JP2009540665A | 2009-11-19 |
Foreign References:
| WO2007142492A2 | 2007-12-13 |
Other References:
NORTEL NETWORKS: "Consideration on UL RACH scheme for LTE[online]", 3GPP TSG-RAN WG1#44 R1-060653, JPN6022048611, 9 February 2006 (2006-02-09), ISSN: 0004921456
PANASONIC, NTT DOCOMO: "Random access sequence comparison for E-UTRA[online]", 3GPP TSG-RAN WG1#46 R1-062174, JPN6021052773, 23 August 2006 (2006-08-23), ISSN: 0004921457
PANASONIC, NTT DOCOMO: "Zadoff-Chu sequence allocation on RACH for complexity reduction[online]", 3GPP TSG-RAN WG1#47BIS R1-070189, JPN6021052772, 10 January 2007 (2007-01-10), ISSN: 0004921458
PANASONIC, NTT DOCOMO: "Random access sequence comparison for E-UTRA[online]", 3GPP TSG-RAN WG1#46 R1-062174, JPN6021052773, 23 August 2006 (2006-08-23), ISSN: 0004921457
PANASONIC, NTT DOCOMO: "Zadoff-Chu sequence allocation on RACH for complexity reduction[online]", 3GPP TSG-RAN WG1#47BIS R1-070189, JPN6021052772, 10 January 2007 (2007-01-10), ISSN: 0004921458
Attorney, Agent or Firm:
Washeda International Patent Office
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