Method and apparatus for defining transceiving timing of a physical channel in a TDD communication system which supports cross-carrier scheduling
The present invention relates to a method for defining, in a TDD wireless communication system in which broadband is configured by means of carrier aggregation, transceiving timing for a data channel and a control channel when cross-carrier scheduling is implemented.
1. A method by a base station in a mobile communication system employing time division duplexing, the method comprising:
transmitting, to a terminal, first subframe configuration information of a first cell;
transmitting, to the terminal, information for activating a second cell, second subframe configuration information of the second cell, and configuration information of cross-carrier scheduling;
transmitting, to the terminal, scheduling information on a control channel of the first cell based on the configuration information of cross-carrier scheduling; and
transmitting, to the terminal, data on a shared channel of the second cell based on the scheduling information,
wherein the scheduling information is transmitted in a downlink subframe or a special subframe based on the first subframe configuration information for the first cell,
wherein the data is transmitted in a downlink subframe or a special subframe for the second cell, which corresponds to the downlink subframe or the special subframe for the first cell, and
wherein the first subframe configuration information is different from the second subframe configuration information.
2. The method of claim 1 , wherein the first subframe configuration information and the second subframe configuration information include at least one of a downlink subframe, a uplink subframe, and a special subframe.
3. The method of claim 1 , further comprising:
generating the scheduling information of the second cell.
4. The method of claim 1 , further comprising:
receiving a Hybrid Automatic Repeat Request—ACKnowledgement (HARQ-ACK) response corresponding to the data on the second cell from the terminal according to the second subframe configuration information.
5. The method of claim 1 , wherein the control channel comprises Physical Downlink Control CHannel (PDCCH) and the shared channel comprises Physical Downlink Shared CHannel (PDSCH).
6. The method of claim 1 , wherein the scheduling information is transmitted in a subframe in which scheduling information transmission is restricted according to the first subframe configuration information.
7. A method by a terminal in a mobile communication system employing time division duplexing, the method comprising:
receiving, from a base station, first subframe configuration information of a first cell;
receiving, from the base station, information for activating a second cell, second subframe configuration information of the second cell, and configuration information of cross-carrier scheduling;
receiving, from the base station, scheduling information on a control channel of the first cell based on the configuration information of cross-carrier scheduling; and
receiving, from the base station, data on a shared channel of the second cell based on the scheduling information,
wherein the scheduling information is received in a downlink subframe or a special subframe based on the first subframe configuration information for the first cell,
wherein the data is received in a downlink subframe or a special subframe for the second cell, which corresponds to the downlink subframe or the special subframe for the first cell, and
wherein the first subframe configuration information is different from the second subframe configuration information.
8. The method of claim 7 , wherein the first subframe configuration information and the second subframe configuration information include at least one of a downlink subframe, a uplink subframe, and a special subframe.
9. The method of claim 7 , further comprising:
monitoring the control channel on the first cell.
10. The method of claim 7 , further comprising:
transmitting a Hybrid Automatic Repeat Request—ACKnowledgement (HARQ-ACK) response corresponding to the data on the second cell to the terminal according to the subframe configuration of the second cell.
11. The method of claim 7 , wherein the control channel comprises Physical Downlink Control CHannel (PDCCH) and the shared channel comprises Physical Downlink Shared CHannel (PDSCH).
12. The method of claim 7 , wherein the scheduling information is received in a subframe in which scheduling information transmission is restricted according to subframe configuration of the first cell.
13. A base station in a mobile communication system employing time division duplexing, the base station comprising:
a transceiver which transmits/receives at least one signal; and
a controller configured to:
transmit, to a terminal, first subframe configuration information of a first cell,
transmit, to the terminal, information for activating a second cell, second subframe configuration information of the second cell, and configuration information of cross-carrier scheduling,
transmit, to the terminal, scheduling information on a control channel of the first cell based on the configuration information of cross-carrier scheduling, and
transmit, to the terminal, data on a shared channel of the second cell based on the scheduling information, wherein the scheduling information is transmitted in a downlink subframe or a special subframe based on the first subframe configuration information for the first cell,
wherein the data is transmitted in a downlink subframe or a special subframe for the second cell, which corresponds to the downlink subframe or the special subframe for the first cell, and
wherein the first subframe configuration information is different from the second subframe configuration information.
14. The method of claim 13 , wherein the first subframe configuration information and the second subframe configuration information include at least one of a downlink subframe, a uplink subframe, and a special subframe.
15. The base station of claim 13 , wherein the controller is configured to:
generate the scheduling information of the second cell.
16. The base station of claim 13 , wherein the controller is configured to:
receive a Hybrid Automatic Repeat Request—ACKnowledgement (HARQ-ACK) response corresponding to the data on the second cell from the terminal according to the second subframe configuration information.
17. The base station of claim 13 , wherein the control channel comprises Physical Downlink Control CHannel (PDCCH) and the shared channel comprises Physical Downlink Shared CHannel (PDSCH).
18. The base station of claim 13 , wherein the controller is configured to transmit the scheduling information in a subframe in which scheduling information transmission is restricted according to the first subframe configuration information.
19. A terminal in a mobile communication system employing time division duplexing, the terminal comprising:
a transceiver which transmits/receives at least one signal; and
a controller configured to:
receive, from a base station, first subframe configuration information of a first cell,
receive, from the base station, information for activating a second cell, second subframe configuration information of the second cell, and configuration information of cross-carrier scheduling,
receive, from the base station, scheduling information on a control channel of the first cell based on the configuration information of cross-carrier scheduling, and
receive, from the base station, data on a shared channel of the second cell based on the scheduling information,
wherein the scheduling information is received in a downlink subframe or a special subframe based on the first subframe configuration information for the first cell,
wherein the data is received in a downlink subframe or a special subframe for the second cell, which corresponds to the downlink subframe or the special subframe for the first cell, and
wherein the first subframe configuration information is different from the second subframe configuration information.
20. The method of claim 19 , wherein the first subframe configuration information and the second subframe configuration information include at least one of a downlink subframe, a uplink subframe, and a special subframe.
21. The terminal of claim 19 , wherein the controller is configured to:
monitor the control channel on the first cell.
22. The terminal of claim 19 , wherein the controller is configured to:
transmit a Hybrid Automatic Repeat Request—ACKnowledgement (HARQ-ACK) response corresponding to the data on the second cell to the terminal according to the subframe configuration of the second cell.
23. The terminal of claim 19 , wherein the control channel comprises Physical Downlink Control CHannel (PDCCH) and the shared channel comprises Physical Downlink Shared CHannel (PDSCH).
24. The terminal of claim 19 , wherein the controller is configured to receive the scheduling information in a subframe in which scheduling information transmission is restricted according to the subframe configuration of the first cell.