Sequence Report Method and Sequence Report Device

• US 20100113046A1
• Filed: 03/18/2008
• Published: 05/06/2010
• Est. Priority Date: 03/19/2007
• Status: Active Grant

• Current Assignee: Godo Kaisha IP Bridge 1 (IP Bridge, Inc.)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Iwai, Takashi, Inogai, Kazunori, Matsumoto, Atsushi, Imamura, Daichi, Futagi, Sadaki
• Granted Patent: US 8,085,724 B2
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04J 13/0062 Zadoff-Chu
• CPC Class Codes: H04J 13/0066 GCL [generalized chirp-like] sequences
• CPC Class Codes: H04J 13/22 Allocation of codes with a zero correlation zone
• CPC Class Codes: H04J 2013/0096 Network synchronisation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0466 the resource being a scrambling code
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

Disclosed are a sequence report method and a sequence report device for reducing a signaling amount for reporting a Zadoff-Chu sequence or a GCL sequence allocated for a cell. Indexes starting at 1 are correlated to different ZC sequences and are allocated for cells so that the indexes are continuous. When such ZC sequences are reported from BS to UE, a start index indicating the start of the continuous indexes is combined with the number of allocated sequences and they are reported as allocation sequence information by a report channel. The UE and the BS share the correlation between the ZC sequences and the indexes and the UE identifies a usable sequence number according to the correlation and the allocation sequence information reported from the BS.

Claims

1. A sequence report apparatus that correlates indexes having consecutive numbers to a plurality of different code sequences and allocates the indexes to cells so that the indexes are consecutive, the sequence report apparatus comprising:

a storage section that stores correspondence relationships that correlate indexes having consecutive numbers to a plurality of different code sequences; and

a report section that reports information combining an index indicating one of allocated code sequences and information indicating a number of allocated sequences as allocation sequence information based on the correspondence relationships.

2. The sequence report apparatus according to claim 1, wherein the report section, when the code sequence is a Zadoff-Chu sequence or GCL sequence, and the storage section stores relationships that correlate indexes having consecutive numbers to a sequence number r=a, N−

a (1≦

a≦

N−

1) set, reports allocation sequence information combining an index indicating one of allocated code sequence sets and information indicating a number of allocated sequences.

3. The sequence report apparatus according to claim 1, wherein the storage section stores the correspondence relationships for which a number of allocated sequences is limited.

4. The sequence report apparatus according to claim 3, wherein the report section, when the storage section stores the correspondence relationships differing for each allocated sequence, reports allocation sequence information combining an index type indicating a number of allocated sequences and the index.

5. The sequence report apparatus according to claim 3, wherein the report section, when the storage section stores correspondence relationships that correlate indexes having consecutive numbers to all sets of allocated code sequences in a number of allocated sequences, reports an index indicating an allocated code sequence as allocation sequence information.

6. The sequence report apparatus according to claim 1, wherein information indicating the number of allocated sequences is a cyclic shift amount.

7. The sequence report apparatus according to claim 2, wherein the storage section stores correspondence relationships that correlate indexes having consecutive numbers to a plurality of different code sequences so that applicable cell radii of each code sequence for a wireless communication mobile station apparatus that moves at high speed arc in ascending order or descending order.

8. The sequence report apparatus according to claim 2, wherein the storage section stores correspondence relationships that correlate indexes having consecutive numbers to a plurality of different code sequences so that applicable cyclic shift amounts of each code sequence for a wireless communication mobile station apparatus that moves at high speed are in ascending order or descending order.

9. A sequence report method that, based on correspondence relationships that correlate indexes having consecutive numbers to a plurality of different code sequences, reports, as allocation sequence information, information which combines an index indicating one of code sequences allocated to a cell such that the indexes are consecutive and information indicating a number of allocated sequences.