TERMINAL, COMMUNICATION METHOD AND INTEGRATED CIRCUIT

• US 20150131605A1
• Filed: 05/15/2013
• Published: 05/14/2015
• Est. Priority Date: 05/18/2012
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Nogami, Toshizo, Shimezawa, Kazuyuki, Imamura, Kimihiko
• Application Number:
  US14/400,766
• Publication Number:
  US 20150131605A1
• Time in Patent Office: Days
• US Class Current: 370/330
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2626 Arrangements specific to the transmitter only
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/00 Local resource management

Abstract

Provided is a terminal that performs communication with a base station, the terminal retaining first information that specifies a first starting position which is a starting position of OFDM symbols in which an enhanced physical downlink control channel in a common search space is mapped, and second information, independent of the first information, which specifies a second starting position which is a starting position of OFDM symbols in which an enhanced physical downlink control channel in a terminal-specific search space is mapped; and detecting the enhanced physical downlink control channel in the common search space and the terminal-specific search space, based on the first information and the second information, respectively.

Claims

1-11. -11. (canceled)

12. A terminal that performs communication with a base station, the terminal performing processing comprising:

retaining first information that specifies a first number of OFDM symbols that is the number of the OFDM symbols in which an enhanced physical downlink control channel in a common search space is mapped, and second information, independent of the first information, which specifies a second number of OFDM symbols that is the number of the OFDM symbols in which an enhanced physical downlink control channel in a terminal-specific search space is mapped; and

detecting the enhanced physical downlink control channel in the common search space on the OFDM symbols that are specified by the first information and in the terminal-specific search space on the OFDM symbols that are specified by the second information.

13. The terminal according to claim 12,

wherein the first information is obtained from a physical broadcast channel.

14. The terminal according to claim 12,

wherein the first number of the OFDM symbols is fixed, and the second number of the OFDM symbols is variable.

15. The terminal according to claim 12,

wherein the second information is obtained using dedicated RRC signaling.

16. A communication method for a terminal that performs communication with a base station, the method comprising:

a step of storing first information that specifies a first number of OFDM symbols that is the number of the OFDM symbols in which an enhanced physical downlink control channel in a common search space is mapped, and second information, independent of the first information, which specifies a second number of OFDM symbols that is the number of the OFDM symbols in which an enhanced physical downlink control channel in a terminal-specific search space is mapped; and

a step of detecting the enhanced physical downlink control channel in the common search space on the OFDM symbols that are specified by the first information and in the terminal-specific search space on the OFDM symbols that are specified by the second information.

17. An integrated circuit in a terminal that performs communication with a base station, the integrated circuit performing processing comprising:

retaining first information that specifies a first number of OFDM symbols that is the number of OFDM symbols on which an enhanced physical downlink control channel in a common search space is mapped, and second information, independent of the first information, which specifies a second number of OFDM symbols that is the number of OFDM symbols on which an enhanced physical downlink control channel in a terminal-specific search space is mapped; and

detecting the enhanced physical downlink channel in the common search space on the OFDM symbols that are specified by the first information and in the terminal-specific search space on the OFDM symbols that are specified by the second information.