Method for uplink control channel resource allocation of terminal and apparatus thereof
Provided are a method and an apparatus for PUCCH resource allocation for an uplink HARQ ACK/NACK feedback of a machine-type communication (MTC) terminal in a 3GPP LTE/LTE-Advanced system.
1. A method of transmitting response information of downlink data of a Machine Type Communication (MTC) terminal, the method comprising:
receiving structural information that contains at least one of i) information on a resource allocated to an uplink control channel for transmitting the response information and ii) start offset information on the resource allocated to the uplink control channel;
receiving downlink control information for scheduling the downlink data;
receiving the downlink data; and
transmitting the response information on the downlink data by using the resource allocated to the uplink control channel,
wherein the resource allocated to the uplink control channel is determined based on at least one of: i) information on a resource of a downlink control channel for scheduling the downlink data; ii) the information on the resource allocated to the uplink control channel; and iii) the start offset information on the resource allocated to the uplink control channel;
wherein the start offset information of the resource allocated to the uplink control channel is configured separated from start offset information for a terminal different from the MTC terminal;
wherein a plurality of pieces of start offset information of the resource allocated to the uplink control channel are provided, and the plurality of pieces of start offset information are received through cell-specific high layer signaling for the MTC terminal from a base station;
wherein the start offset information on the resource allocated to the uplink control channel is determined based on a coverage level; and
wherein when the response information of the downlink data of the MTC terminal is repeatedly transmitted, the repeated transmission is performed using a same uplink control channel resource in each uplink subframe in which the uplink control channel is repeatedly transmitted.
2. The method of claim 1 , wherein:
at least one of the plurality of pieces of start offset information is applied according to a corresponding coverage level of the MTC terminal.
3. A method of configuring a resource of response information of downlink data for a Machine Type Communication (MTC) terminal in a base station, the method comprising:
transmitting structural information that contains at least one of i) information on a resource allocated to an uplink control channel for transmitting the response information and ii) start offset information on the resource allocated to the uplink control channel;
transmitting downlink control information for scheduling the downlink data; and
transmitting the downlink data,
wherein the resource of the uplink control channel for transmitting the response information of the downlink data is determined based on at least one piece of information on i) a resource of a downlink control channel for scheduling the downlink data; ii) the information on the resource allocated to the uplink control channel; and iii) the start offset information on the resource allocated to the uplink control channel;
wherein the start offset information of the resource allocated to the uplink control channel is configured separated from offset information on a terminal different from the MTC terminal;
wherein a plurality of pieces of start offset information on the resource allocated to the uplink control channel are provided, and the plurality of pieces of start offset information are transmitted through cell-specific high layer signaling for the MTC terminal to the MTC terminal;
wherein the start offset information on the resource allocated to the uplink control channel is determined based on a coverage level; and
wherein when the response information of the downlink data of the MTC terminal is repeatedly transmitted, the repeated transmission is performed using a same uplink control channel resource in each uplink subframe in which the uplink control channel is repeatedly transmitted.
4. The method of claim 3 , wherein:
at least one of the plurality of pieces of start offset information is applied according to a corresponding coverage level of the MTC terminal.
5. A Machine Type Communication (MTC) terminal for transmitting response information of downlink data to a base station, the terminal comprising:
a receiving unit configured to receive structural information that contains at least one piece of i) information on a resource allocated to an uplink control channel for transmitting the response information and ii) start offset information on the resource to which the uplink control channel is allocated, configured to receive downlink control information for scheduling the downlink data, and configured to receive the downlink data;
a controller configured to determine a resource allocated to the uplink control channel for transmitting the response information of the downlink data based on at least one of i) information on a resource of a downlink control channel for scheduling the downlink data, ii) the information on the resource allocated to the uplink control channel, and iii) the start offset information on the resource allocated to the uplink control channel; and
a transmitting unit configured to transmit the response information of the downlink data by using the determined resource of the uplink control channel,
wherein the start offset information of the resource allocated to the uplink control channel is configured separated from offset information on a terminal different from the MTC terminal;
wherein a plurality of pieces of start offset information on the resource allocated to the uplink control channel are provided, and the plurality of pieces of start offset information are received through cell-specific high layer signaling for the MTC terminal from the base station;
wherein the start offset information on the resource allocated to the uplink control channel is determined based on a coverage level; and
wherein when the response information of the downlink data of the MTC terminal is repeatedly transmitted, the repeated transmission is performed using a same uplink control channel resource in each uplink subframe in which the uplink control channel is repeatedly transmitted.
6. The MTC terminal of claim 5 , wherein:
at least one of the plurality of pieces of start offset information is applied according to a corresponding coverage level of the MTC terminal.
7. A base station for configuring a resource of response information of downlink data for a Machine Type Communication (MTC) terminal, the base station comprising:
a transmitting unit configured to transmit structural information, downlink control information for scheduling the downlink data, and the downlink data,
wherein the structural information contains at least one piece of i) information on a resource allocated to an uplink control channel for transmitting the response information and ii) start offset information on the resource allocated to the uplink control channel;
wherein the resource of the uplink control channel for transmitting the response information of the downlink data is determined based on at least one piece of i) information on a resource of a downlink control channel for scheduling the downlink data, ii) the information on the resource allocated to the uplink control channel, and iii) the start offset information of the resource allocated to the uplink control channel;
wherein the start offset information of the resource allocated to the uplink control channel is configured separated from offset information on a terminal different from the MTC terminal;
wherein a plurality of pieces of start offset information on the resource allocated to the uplink control channel are provided, and the plurality of pieces of start offset information are transmitted through cell-specific high layer signaling for the MTC terminal to the MTC terminal;
wherein the start offset information of the resource allocated to the uplink control channel is determined based on a coverage level; and
wherein when the response information of the downlink data of the MTC terminal is repeatedly transmitted, the repeated transmission is performed using a same uplink control channel resource in each uplink subframe in which the uplink control channel is repeatedly transmitted.