TERMINAL, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

• US 20140211732A1
• Filed: 07/19/2012
• Published: 07/31/2014
• Est. Priority Date: 08/12/2011
• Status: Active Grant

• 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, Aiba, Tatsushi, Nakashima, Daiichiro, Shimezawa, Kazuyuki, Imamura, Kimihiko
• Granted Patent: US 9,337,981 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04J 13/0003 Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• 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

Abstract

In a terminal that communicates with a base station, in the case where a physical downlink control channel or an enhanced physical downlink control channel, which is associated with a physical downlink shared channel on a first cell, and an enhanced physical downlink control channel associated with a physical downlink shared channel on a second cell are detected, one physical uplink control channel resource is selected from a physical uplink control channel resource configured for the physical downlink shared channel on the first cell and a physical uplink control channel resource configured for the physical downlink shared channel on the second cell.

Claims

1-17. -17. (canceled)

18. A terminal that communicates with a base station, comprising:

a downlink control channel detection unit that monitors a physical downlink control channel arranged in a physical downlink control channel region and an enhanced physical downlink control channel arranged in a region different from the physical downlink control channel region;

a data extraction unit that extracts, in a case where the downlink control channel detection unit detects the enhanced physical downlink control channel associated with a physical downlink shared channel on a primary cell and the physical downlink control channel or the enhanced physical downlink control channel associated with a physical downlink shared channel on a secondary cell, transmit data in the physical downlink shared channel on the primary cell and transmit data in the physical downlink shared channel on the secondary cell;

a response information generation unit that generates response information in response to each of the extracted transmit data;

a channel selection unit that selects, based on the response information, one physical uplink control channel resource from a physical uplink control channel resource configured for the physical downlink shared channel on the primary cell and a physical uplink control channel resource configured for the physical downlink shared channel on the secondary cell;

an uplink control channel generation unit that generates a physical uplink control channel based on the response information; and

a response transmission unit that transmits the physical uplink control channel generated by the uplink control channel generation unit, using the physical uplink control channel resource selected by the channel selection unit.

19. The terminal according to claim 18, wherein the channel selection unit uses, as the physical uplink control channel resource configured for the physical downlink shared channel on the primary cell, a physical uplink control channel resource determined based on an index of an element constructing the enhanced physical downlink control channel associated with the physical downlink shared channel on the primary cell.

20. The terminal according to claim 18, wherein the channel selection unit uses, as the physical uplink control channel resource configured for the physical downlink shared channel on the primary cell, a physical uplink control channel resource determined by adding at least a terminal-specific parameter to an index of an element constructing the enhanced physical downlink control channel associated with the physical downlink shared channel on the primary cell.

21. The terminal according to claim 18, wherein the channel selection unit uses, as the physical uplink control channel resource configured for the physical downlink shared channel on the secondary cell, a physical uplink control channel resource indicated by the physical downlink control channel or the enhanced physical downlink control channel associated with the physical downlink shared channel on the secondary cell, among physical uplink control channel resource candidates configured by the base station using RRC signaling.

22. A base station that communicates with a terminal, comprising:

a physical control information delivering unit that delivers, to the terminal, an enhanced physical downlink control channel associated with a physical downlink shared channel on a primary cell arranged in a region different from a physical downlink control channel region in which a physical downlink control channel is arranged, and a physical downlink control channel or an enhanced physical downlink control channel associated with a physical downlink shared channel on a secondary cell; and

a response information reception unit that monitors a physical uplink control channel resource configured for the physical downlink shared channel on the primary cell and a physical uplink control channel resource configured for the physical downlink shared channel on the secondary cell, and extracts response information in response to transmit data in the physical downlink shared channel on the primary cell and response information in response to transmit data in the physical downlink shared channel on the secondary cell.

23. The base station according to claim 22, wherein the response information reception unit monitors, as the physical uplink control channel resource configured for the physical downlink shared channel on the primary cell, a physical uplink control channel resource determined based on an index of an element constructing the enhanced physical downlink control channel associated with the physical downlink shared channel on the primary cell.

24. The base station according to claim 22, wherein the response information reception unit monitors, as the physical uplink control channel resource configured for the physical downlink shared channel on the primary cell, a physical uplink control channel resource determined by adding at least a terminal-specific parameter to an index of an element constructing the enhanced physical downlink control channel associated with the physical downlink shared channel on the primary cell.

25. The base station according to claim 22, wherein the response information reception unit monitors, as the physical uplink control channel resource configured for the physical downlink shared channel on the secondary cell, a physical uplink control channel resource indicated using the physical downlink control channel or the enhanced physical downlink control channel associated with the physical downlink shared channel on the secondary cell, among physical uplink control channel resource candidates configured for the terminal by using RRC signaling.

26. A communication system that performs communication between a base station and a terminal,

wherein the terminal comprises

a downlink control channel detection unit that monitors a physical downlink control channel arranged in a physical downlink control channel region and an enhanced physical downlink control channel arranged in a region different from the physical downlink control channel region,

a data extraction unit that extracts, in a case where the downlink control channel detection unit detects the enhanced physical downlink control channel associated with a physical downlink shared channel on a primary cell and the physical downlink control channel or the enhanced physical downlink control channel associated with a physical downlink shared channel on a secondary cell, transmit data in the physical downlink shared channel on the primary cell and transmit data in the physical downlink shared channel on the secondary cell,

a response information generation unit that generates response information in response to each of the extracted transmit data,

a channel selection unit that selects, based on the response information, one physical uplink control channel resource from a physical uplink control channel resource configured for the physical downlink shared channel on the primary cell and a physical uplink control channel resource configured for the physical downlink shared channel on the secondary cell,

an uplink control channel generation unit that generates a physical uplink control channel based on the response information, and

a response transmission unit that transmits the physical uplink control channel generated by the uplink control channel generation unit, using the physical uplink control channel resource selected by the channel selection unit, and

wherein the base station comprises

a physical control information delivering unit that reports, to the terminal, the enhanced physical downlink control channel associated with the physical downlink shared channel on the primary cell, and the physical downlink control channel or the enhanced physical downlink control channel associated with the physical downlink shared channel on the secondary cell, and

a response information reception unit that monitors a physical uplink control channel resource configured for the physical downlink shared channel on the primary cell and a physical uplink control channel resource configured for the physical downlink shared channel on the secondary cell, and extracts response information in response to transmit data in the physical downlink shared channel on the primary cell and response information in response to transmit data in the physical downlink shared channel on the secondary cell.

27. A communication method performed by a terminal that communicates with a base station, comprising:

a step of monitoring a physical downlink control channel arranged in a physical downlink control channel region and an enhanced physical downlink control channel arranged in a region different from the physical downlink control channel region;

a step of extracting, in a case where the enhanced physical downlink control channel associated with a physical downlink shared channel on a primary cell and the physical downlink control channel or the enhanced physical downlink control channel associated with a physical downlink shared channel on a secondary cell are detected, transmit data in the physical downlink shared channel on the primary cell and transmit data on the physical downlink shared channel in the secondary cell;

a step of generating response information in response to each of the extracted transmit data;

a step of selecting, based on the response information, one physical uplink control channel resource from a physical uplink control channel resource configured for the physical downlink shared channel on the primary cell and a physical uplink control channel resource configured for the physical downlink shared channel on the secondary cell;

a step of generating a physical uplink control channel based on the response information; and

a step of transmitting the generated physical uplink control channel using the selected physical uplink control channel resource.

28. A communication method performed by a base station that communicates with a terminal, comprising:

a step of reporting, to the terminal, an enhanced physical downlink control channel associated with a physical downlink shared channel on a primary cell arranged in a region different from a physical downlink control channel region in which a physical downlink control channel is arranged, and a physical downlink control channel or an enhanced physical downlink control channel associated with a physical downlink shared channel on a secondary cell; and

a step of monitoring a physical uplink control channel resource configured for the physical downlink shared channel on the primary cell and a physical uplink control channel resource configured for the physical downlink shared channel on the secondary cell, and extracting response information in response to transmit data in the physical downlink shared channel on the primary cell and response information in response to transmit data in the physical downlink shared channel on the secondary cell.