RADIO COMMUNICATION MOBILE STATION DEVICE AND RESPONSE SIGNAL SPREAD SEQUENCE CONTROL METHOD

• US 20100232388A1
• Filed: 10/28/2008
• Published: 09/16/2010
• Est. Priority Date: 10/29/2007
• Status: Active Grant

• Current Assignee: Optis Wireless Technology, LLC (Brevet Capital)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Nishio, Akihiko, Nakao, Seigo
• Granted Patent: US 8,526,376 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 1/7075 with code phase acquisition
• CPC Class Codes: H04J 13/0055 ZCZ [zero correlation zone]
• CPC Class Codes: H04J 13/0062 Zadoff-Chu
• CPC Class Codes: H04L 1/0038 Blind format detection for detection of modulation format H04L27/0012
• CPC Class Codes: H04L 1/009 arrangements specific to transmitters
• CPC Class Codes: H04L 1/0091 arrangements specific to receivers, e.g. format detection detection of data rate H04L25/0262; detection of coding rate H04L1/0046
• CPC Class Codes: H04L 27/2647 Arrangements specific to the receiver only equalisation H04L27/01
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• 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 88/08 Access point devices

Abstract

Provided is a radio communication mobile station device which can reduce the number of blind decoding processes at a mobile station without increasing the overhead by report information. The device includes: a judgment unit (210) which judges a particular PUCCH to which a response signal corresponding to the downstream line data is to be allocated among a plurality of PUCCH, according to a CCE occupied by PDCCH allocated to a particular search space corresponding to a CCE aggregation size of the PDCCH to which allocation information destined to the local station is allocated among search spaces changing in accordance with the CFI value; and a control unit (211) which controls a cyclic shift amount of a ZAC sequence of the response signal and a block-wise spread code sequence according to a correspondence between CCE occupied by PDCCH allocated to a particular search space and a particular PUCCH resource, the correspondence changing in accordance with the CFI value.

Claims

1-2. -2. (canceled)

3. A radio communication mobile station apparatus comprising:

a deciding section that, based on a control channel element occupied by a first control channel allocated to a specific control channel element field matching a number of control channel elements occupied by the first control channel among a plurality of control channel element fields that vary depending on a control format indicator value, decides a specific second control channel to which a response signal to downlink data is allocated among a plurality of second control channels; and

a control section that controls a spreading sequence for the response signal, according to an association which associates the control channel element occupied by the first control channel and a spreading sequence of the specific second control channel and which varies depending on the control format indicator value.

4. A response signal spreading sequence control method in a specific second control channel to which a response signal to downlink data is allocated, the method comprising controlling a spreading sequence for the response signal, according to an association which associates a spreading sequence of the specific second control channel and a control channel element occupied by a first control channel allocated to a specific control channel element field matching a number of control channel elements occupied by the first control channel among a plurality of control channel element fields that vary depending on a control format indicator value, where the association varies depending on the control format indicator value.