Base station apparatus, terminal apparatus, and wireless communication method

• US 10,051,609 B2
• Filed: 03/04/2014
• Issued: 08/14/2018
• Est. Priority Date: 03/05/2013
• 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: Suzuki, Shoichi, Aiba, Tatsushi, Yokomakura, Kazunari, Nakashima, Daiichiro, Imamura, Kimihiko
• Primary Examiner(s): Nguyen, Hanh N
• Application Number:
  US14/425,073
• Publication Number:
  US 20150264676A1
• Time in Patent Office: 1,624 Days
• Field of Search: 370329-331, 370254-256, 370470-474
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0073 Special arrangements for feedback channel
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• 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: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal

Abstract

A base station apparatus includes a transmission unit that transmits first information indicating a first configuration, second information indicating a second configuration, and third information indicating a third configuration, in which the first configuration is used to determine a correspondence between a subframe in which a PDCCH is allocated and a subframe in which a PUSCH corresponding to the PDCCH is allocated, in which the second configuration is an element of a configuration set which is restricted on the basis of the first configuration, and is used to determine a correspondence between a subframe in which a PDSCH is allocated and a subframe in which a HARQ-ACK corresponding to the PDSCH is transmitted, and in which the third configuration is an element of a configuration set which is restricted on the basis of the first configuration and the second configuration, and is used to specify a subframe in which the PDCCH is monitored.

Claims

1. A base station apparatus configured to communicate with a terminal apparatus configured with a serving cell, the base station apparatus comprising:

a transmission circuit configured to, programmed to, or configured and programmed to transmit to the terminal apparatus, first information indicating an uplink-reference configuration, second information indicating a downlink-reference configuration, and third information indicating a transmission direction configuration, each of the uplink-reference configuration, the downlink-reference configuration, and the transmission direction configuration is defined by an uplink-downlink configuration; and

a reception circuit configured to, programmed to, or configured and programmed to

receive from the terminal apparatus, a physical uplink shared channel corresponding to a physical downlink control channel based on at least the uplink-reference configuration, and

receive from the terminal apparatus, an HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement) corresponding to a physical downlink shared channel based on at least the downlink-reference configuration,

wherein the transmission direction configuration is used by the terminal apparatus to monitor a plurality of physical downlink control channels,

a subframe which is indicated as a downlink subframe or a special subframe by the uplink-reference configuration is not indicated as an uplink subframe by the downlink-reference configuration,

a subframe indicated as an uplink subframe or a special subframe by the downlink-reference configuration is not indicated as a downlink subframe by the transmission direction configuration, and

a subframe indicated as a downlink subframe or a special subframe by the uplink-reference configuration is not indicated as an uplink subframe by the transmission direction configuration.

2. A terminal apparatus configured with a serving cell and configured to communicate with a base station apparatus, the terminal apparatus comprising:

a reception circuit configured to, programmed to, or configured and programmed to receive from the base station apparatus, first information indicating an uplink-reference configuration, second information indicating a downlink-reference configuration, and third information indicating a transmission direction configuration, each of the uplink-reference configuration, the downlink-reference configuration, and the transmission direction configuration is defined by an uplink-downlink configuration; and

a transmission circuit configured to, programmed to, or configured and programmed to

transmit to the base station apparatus, a physical uplink shared channel corresponding to a physical downlink control channel based on at least the uplink-reference configuration, and

transmit to the base station apparatus, an HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement) corresponding to a physical downlink shared channel based on at least the downlink-reference configuration,

wherein the transmission direction configuration is used by the terminal apparatus to monitor a plurality of physical downlink control channels,

a subframe which is indicated as a downlink subframe or a special subframe by the uplink-reference configuration is not indicated as an uplink subframe by the downlink-reference configuration,

a subframe indicated as an uplink subframe or a special subframe by the downlink-reference configuration is not indicated as a downlink subframe by the transmission direction configuration, and

a subframe indicated as a downlink subframe or a special subframe by the uplink-reference configuration is not indicated as an uplink subframe by the transmission direction configuration.

3. A wireless communication method for a base station apparatus configured to communicate with a terminal apparatus configured with a serving cell, the wireless communication method comprising:

transmitting to the terminal apparatus, first information indicating an uplink-reference configuration, second information indicating a downlink-reference configuration, and third information indicating a transmission direction configuration, each of the uplink-reference configuration, the downlink-reference configuration, and the transmission direction configuration is defined by an uplink-downlink configuration;

receiving from the terminal apparatus, a physical uplink shared channel corresponding to a physical downlink control channel based on at least the uplink-reference configuration; and

receiving from the terminal apparatus, an HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement) corresponding to a physical downlink shared channel based on at least the downlink-reference configuration,

wherein the transmission direction configuration is used by the terminal apparatus to monitor a plurality of physical downlink control channels,

a subframe which is indicated as a downlink subframe or a special subframe by the uplink-reference configuration is not indicated as an uplink subframe by the downlink-reference configuration,

a subframe indicated as an uplink subframe or a special subframe by the downlink-reference configuration is not indicated as a downlink subframe by the transmission direction configuration, and

a subframe indicated as a downlink subframe or a special subframe by the uplink-reference configuration is not indicated as an uplink subframe by the transmission direction configuration.

4. A wireless communication method for a terminal apparatus configured with a serving cell and configured to communicate with a base station apparatus, the wireless communication method comprising:

receiving from the base station apparatus, first information indicating an uplink-reference configuration, second information indicating a downlink-reference configuration, and third information indicating a transmission direction configuration, each of the uplink-reference configuration, the downlink-reference configuration, and the transmission direction configuration is defined by an uplink-downlink configuration;

transmitting to the base station apparatus, a physical uplink shared channel corresponding to a physical downlink control channel based on at least the uplink-reference configuration; and

transmitting to the base station apparatus, an HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement) corresponding to a physical downlink shared channel based on at least the downlink-reference configuration,

wherein the transmission direction configuration is used by the terminal apparatus to monitor a plurality of physical downlink control channels,

a subframe which is indicated as a downlink subframe or a special subframe by the uplink-reference configuration is not indicated as an uplink subframe by the downlink reference configuration,

a subframe indicated as an uplink subframe or a special subframe by the downlink-reference configuration is not indicated as a downlink subframe by the transmission direction configuration, and

a subframe indicated as a downlink subframe or a special subframe by the uplink-reference configuration is not indicated as an uplink subframe by the transmission direction configuration.