Method and apparatus for effectively providing TDD configuration information to user equipment and determining uplink transmission timing in mobile communication system supporting TDD
A method for configuring a time division duplex (TDD) of a user equipment in a communication system, according to one embodiment of the present invention, comprises the steps of: receiving from a base station a first TDD configuration; receiving from the base station a message including information related to a dynamic TDD configuration; receiving a second TDD configuration according to the received information related to the dynamic TDD configuration; receiving from the base station an uplink grant; and determining whether to apply the first TDD configuration or the second TDD configuration based on a method by which the unlink grant is received. According to one embodiment of the present invention, the advantages of configuring a shorter cycle of the TDD to the user equipment supporting the TDD in a wireless communication system, and rapidly configuring the TDD to the user equipment variably according to a communication situation are provided.
1. A method by a terminal in a communication system, the method comprising:
receiving, from a base station, a system information block message including information on a first time division duplex (TDD) uplink/downlink (UL/DL) configuration;
receiving, from the base station, a physical downlink control channel (PDCCH) including downlink control information, the downlink control information including information related to a second TDD UL/DL configuration;
receiving, from the base station, uplink scheduling information for the terminal; and
transmitting, to the base station, data in a subframe based on the uplink scheduling information, wherein the data is not transmitted in a subframe which is changed from an uplink subframe determined based on the information on the first TDD UL/DL configuration to a downlink subframe determined based on the information related to the second TDD UL/DL configuration.
2. The method of claim 1 , wherein the transmitting the data further comprises:
transmitting, based on the uplink scheduling information being received in a random access response message, the data in the subframe determined based on the information of the first TDD UL/DL configuration.
3. The method of claim 1 , wherein the transmitting the data further comprises:
transmitting based on the uplink scheduling information being received in the PDCCH, the data in the subframe determined based on the information related to the second TDD UL/DL configuration.
4. The method of claim 1 , wherein the transmitting the data comprises:
transmitting, based on the uplink scheduling information being received in a random access response message in a subframe n, data corresponding to the uplink scheduling information based on the information on the first TDD UL/DL configuration in a subframe n+k,
wherein in the k is an integer greater than or equal to 6.
5. A terminal in a communication system, the terminal comprising:
a transceiver; and
a controller configured to:
control the transceiver to receive, from a base station, a system information block message including information on a first time division duplex(TDD) uplink/downlink(UL/DL) configuration, receive, from the base station, a physical downlink control channel(PDCCH) including downlink control information, the downlink control information including information related to a second TDD UL/DL configuration, receive, from the base station, uplink scheduling information for the terminal and transmit, to the base station, data in a subframe based on the uplink scheduling information,
wherein the data is not transmitted in a subframe which is changed from an uplink subframe determined based on the information on the first TDD UL/DL configuration to a downlink subframe determined based on the information related to the second TDD UL/DL configuration.
6. The terminal of claim 5 , wherein the controller is further configured to:
control the transceiver to transmit based on the uplink scheduling information being received in a random access response message, the data in the subframe determined based on the information of the first TDD UL/DL configuration.
7. The terminal of claim 5 , wherein the controller is further configured to:
control the transceiver to transmit based on the uplink scheduling information being received in the PDCCH, the data in the subframe determined based on the information related to the second TDD UL/DL configuration.
8. The terminal of claim 5 , wherein the controller is further configured to:
control the transceiver to transmit, based on the uplink scheduling information being received in a random access response message in a subframe n, data corresponding to the uplink scheduling information based on the information on the first TDD UL/DL configuration in a subframe n+k,
wherein k is an integer greater than or equal to 6.
9. A method by a base station in a communication system, the method comprising:
transmitting, to a terminal, a system information block message including information on a first time division duplex(TDD) uplink/downlink(UL/DL) configuration;
transmitting, to the terminal, a physical downlink control channel(PDCCH) including downlink control information, the downlink control information including information related to a second TDD UL/DL configuration;
transmitting, to the terminal, uplink scheduling information for the terminal; and
receiving, from the terminal, data in a subframe based on the uplink scheduling information,
wherein the data is not received in a subframe which is changed from an uplink subframe determined based on the information on the first TDD UL/DL configuration to a downlink subframe determined based on the information related to the second TDD UL/DL configuration.
10. The method of claim 9 , wherein the receiving the data further comprises:
receiving, based on the uplink scheduling information being transmitted in a random access response message, the data in the subframe determined based on the information on the first TDD UL/DL configuration.
11. The method of claim 9 , wherein the receiving the data further comprises:
receiving based on the uplink scheduling information being transmitted in the PDCCH, the data in the subframe determined based on the information related to the second TDD UL/DL configuration.
12. The method of claim 9 , wherein the receiving the data comprises:
receiving, based on the uplink scheduling information being transmitted in a random access response message in a subframe n, data corresponding to the uplink scheduling information based on the information on the first TDD UL/DL configuration in a subframe n+k,
wherein in the k is an integer greater than or equal to 6.
13. A base station in a communication system, the base station comprising:
a transceiver; and
a controller configured to:
control the transceiver to transmit, to a terminal, a system information block message including information on a first time division duplex(TDD) uplink/downlink(UL/DL) configuration, transmit, to the terminal, a physical downlink control channel(PDCCH) including downlink control information, the downlink control information including information related to a second TDD UL/DL configuration, transmit, to the terminal, uplink scheduling information for the terminal and receive, from the terminal, data in a subframe based on the uplink scheduling information,
wherein the data is not received in a subframe which is changed from an uplink subframe determined based on the information on the first TDD UL/DL configuration to a downlink subframe determined based on the information related to the second TDD UL/DL configuration.
14. The base station of claim 13 , wherein the controller is further configured to control the transceiver to receive based on the uplink scheduling information being transmitted in a random access response message, the data in the subframe determined based on the information on the first TDD UL/DL configuration.
15. The base station of claim 13 , wherein the controller is further configured to control the transceiver to receive based on the uplink scheduling information being transmitted in the PDCCH, the data in the subframe determined based on the information related to the second TDD UL/DL configuration.
16. The base station of claim 13 , wherein the controller is further configured to control the transceiver to receive based on the uplink scheduling information being transmitted in a random access response message in a subframe n, data corresponding to the uplink scheduling information based on the information on the first TDD UL/DL configuration in a subframe n+k,
wherein in the k is an integer greater than or equal to 6.