Base station device, terminal device and communication method
AssigneeGodo Kaisha IP Bridge 1
InventorsSeigo Nakao, Daichi Imamura
Life of this patent
Estimating the term…
Abstract
In a terminal, a control unit transmits a bundle response signal using a resource in a basic region of an uplink control channel in an uplink unit band of a unit band group when no error is detected in each of a plurality of pieces of downlink data of the unit band group, the uplink control channel in the uplink unit band being associated with a downlink control channel in a basic unit band that is a downlink unit band in which a broadcast channel signal including information relating to the uplink unit band is transmitted, and the control unit transmits the bundle response signal using a resource in an additional region of the uplink control channel when an error is detected in each of the plurality of pieces of downlink data.
Claims16
A terminal apparatus that communicates with a base station using a unit band group made up of a plurality of downlink unit bands and an uplink unit band and transmits one bundled response signal through an uplink control channel of the uplink unit band based on an error detection result of a plurality of pieces of downlink data arranged in the plurality of downlink unit bands, the apparatus comprising:
- a downlink data receiving circuit that receives downlink data transmitted through at least one downlink data channel of the plurality of downlink unit bands;
- an error detection circuit that detects the presence or absence of a reception error of the received downlink data;
- and
- a response control circuit that transmits the bundled response signal using one of a first region and a second region of the uplink control channel based on a reception situation pattern determined by the error detection result obtained in the error detection circuit;
- wherein the response control circuit transmits the bundled response signal using resources of the first region responsive to a reception situation pattern having a high probability of occurrence and transmits the bundled response signal using resources of the second region responsive to a reception situation pattern having a low probability of occurrence.
A retransmission control method comprising:
- a downlink data receiving step of receiving downlink data transmitted through at least one downlink data channel of a plurality of downlink unit bands included in a unit band group;
- an error detection step of detecting a reception error of the received downlink data;
- and
- a response controlling step of transmitting a bundled response signal using one of a first region and a second region of an uplink control channel in an uplink unit band included in the unit band group based on a reception situation pattern determined by the error detection result obtained in the error detection step;
- wherein, in the response control step, the bundled response signal is transmitted using resources of the first region responsive to a reception situation pattern having a high probability of occurrence and the bundled response signal is transmitted using resources of the second region responsive to a reception situation pattern having a low probability of occurrence.
A method performed by a terminal apparatus that receives a plurality of downlink channel data using a plurality of downlink unit bands including a base unit band and another unit band other than the base unit band, the method comprising:
- receiving downlink assignment control information on at least one of the base unit band and the another unit band;
- and
- transmitting, when the downlink assignment control information is received on the basic unit band and the downlink assignment control information is not received on the another unit band, a response signal to the downlink channel data using a physical uplink control channel (PUCCH) resource associated with a control channel element (CCE) in accordance with a transmission resource assignment result of the downlink assignment control information, and transmitting, when the downlink assignment control information is not received on the basic unit band and the downlink assignment control information is received on the another unit band, a response signal to the downlink channel data using a PUCCH resource explicitly reported from a base station.
A terminal apparatus configured to receive a plurality of downlink channel data using a plurality of downlink unit bands including a base unit band and another unit band other than the base unit band, the apparatus comprising:
- a receiving circuit that receives downlink assignment control information on at least one of the base unit band and the another unit band;
- and
- a transmission circuit that transmits, when the downlink assignment control information is received on the basic unit band and the downlink assignment control information is not received on the another unit band, a response signal to the downlink channel data using a physical uplink control channel (PUCCH) resource associated with a control channel element (CCE) in accordance with a transmission resource assignment result of the downlink assignment control information, and transmits, when the downlink assignment control information is not received on the basic unit band and the downlink assignment control information is received on the another unit band, a response signal to the downlink channel data using a PUCCH resource explicitly reported from a base station.
Dependencies are inferred from the claim text.