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 of a terminal in a communication system, the method comprising:
receiving, from a base station, information on a first time division duplex(TDD) uplink/downlink(UL/DL) configuration;
receiving, from the base station, information on a second TDD UL/DL configuration;
receiving, from the base station, uplink scheduling information;
transmitting, to the base station, if the uplink scheduling information is received based on a first identifier, a message based on the uplink scheduling information and the first TDD UL/DL configuration; and
transmitting, to the base station, if the uplink scheduling information is received based on a second identifier, a message based on the uplink scheduling information and the second TDD UL/DL configuration.
2. The method of claim 1 , wherein receiving the information on the second TDD UL/DL configuration comprises:
receiving, from the base station, control information comprising the second TDD UL/DL configuration.
3. The method of claim 1 , wherein, if the uplink scheduling information is received based on the first identifier on a subframe n, the message corresponding to the uplink scheduling information is transmitted on a subframe n+k, and
wherein k is an integer greater than or equal to 6, and k is identified based on the first TDD UL/DL configuration.
4. The method of claim 1 , wherein, if the uplink scheduling information is received based on the first identifier, the uplink scheduling information is included in a response to a preamble.
5. The method of claim 1 , wherein the first identifier is a random access-radio network temporary identifier (RA-RNTI), and the second identifier is a cell-RNTI (C-RNTI).
6. A method of a base station in a communication system, the method comprising:
transmitting, to a terminal, information on a first time division duplex (TDD) uplink/downlink (UL/DL) configuration;
transmitting, to the terminal, information on a second TDD UL/DL configuration;
transmitting, to the terminal, uplink scheduling information;
receiving, from the terminal, if the uplink scheduling information is transmitted based on a first identifier, a message based on the uplink scheduling information and the first TDD UL/DL configuration; and
receiving, from the terminal, if the uplink scheduling information is transmitted based on a second identifier, a message based on the uplink scheduling information and the second TDD UL/DL configuration.
7. The method of claim 6 , wherein transmitting the information on the second TDD UL/DL configuration comprises:
transmitting, to the terminal, control information comprising the second TDD UL/DL configuration.
8. The method of claim 6 , wherein, if the uplink scheduling information is transmitted based on the first identifier on a subframe n, the message corresponding to the uplink scheduling information is received on a subframe n+k, and
wherein k is an integer greater than or equal to 6, and k is identified based on the first TDD UL/DL configuration.
9. The method of claim 6 , wherein, if the uplink scheduling information is transmitted based on the first identifier, the uplink scheduling information is included in a response to a preamble.
10. The method of claim 6 , wherein the first identifier is a random access-radio network temporary identifier (RA-RNTI), and the second identifier is a cell-RNTI (C-RNTI).
11. A terminal in a communication system, the terminal comprising:
a transceiver configured to transmit and receive signals; and
a controller coupled to the transceiver and configured to:
receive, from a base station, information on a first time division duplex (TDD) uplink/downlink (UL/DL) configuration;
receive, from the base station, information on a second TDD UL/DL configuration;
receive, from the base station, uplink scheduling information;
transmit, to the base station, if the uplink scheduling information is received based on a first identifier, a message based on the uplink scheduling information and the first TDD UL/DL configuration; and
transmit, to the base station, if the uplink scheduling information is received based on a second identifier, a message based on the uplink scheduling information and the second TDD UL/DL configuration.
12. The terminal of claim 11 , wherein the controller is further configured to receive, from the base station, control information comprising the second TDD UL/DL configuration.
13. The terminal of claim 11 , wherein, if the uplink scheduling information is received based on the first identifier on a subframe n, the message corresponding to the uplink scheduling information is transmitted on a subframe n+k, and
wherein k is an integer greater than or equal to 6, and k is identified based on the first TDD UL/DL configuration.
14. The terminal of claim 11 , wherein, if the uplink scheduling information is received based on the first identifier, the uplink scheduling information is included in a response to a preamble.
15. The terminal of claim 11 , wherein the first identifier is a random access-radio network temporary identifier (RA-RNTI), and the second identifier is a cell-RNTI (C-RNTI).
16. A base station in a communication system, the base station comprising:
a transceiver configured to transmit and receive signals; and
a controller coupled to the transceiver and configured to:
transmit, to a terminal, information on a first time division duplex (TDD) uplink/downlink (UL/DL) configuration;
transmit, to the terminal, information on a second TDD UL/DL configuration;
transmit, to the terminal, uplink scheduling information;
receive, from the terminal, if the uplink scheduling information is transmitted based on a first identifier, a message based on the uplink scheduling information and the first TDD UL/DL configuration; and
receive, from the terminal, if the uplink scheduling information is transmitted based on a second identifier, a message based on the uplink scheduling information and the second TDD UL/DL configuration.
17. The base station of claim 16 , wherein the controller is further configured to transmit, to the terminal, control information comprising the second TDD UL/DL configuration.
18. The base station of claim 16 , wherein, if the uplink scheduling information is transmitted based on the first identifier on a subframe n, the message corresponding to the uplink scheduling information is received on a subframe n+k, and
wherein k is an integer greater than or equal to 6, and k is identified based on the first TDD UL/DL configuration.
19. The base station of claim 16 , wherein, if the uplink scheduling information is transmitted based on the first identifier, the uplink scheduling information is included in a response to a preamble.
20. The base station of claim 16 , wherein the first identifier is a random access-radio network temporary identifier (RA-RNTI), and the second identifier is a cell-RNTI (C-RNTI).