Method and apparatus for transmitting and receiving data using plurality of carriers in mobile communication system
The present disclosure relates to converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT), and may be applied to intelligent services, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method according to disclosed aspects includes receiving a first control message including a first random access response window for a first cell group, receiving a second control message for adding a second cell group, including information on a second random access response window size for the second cell group, transmitting, on a cell of the second cell group, a random access preamble, and monitoring, on the cell of the second cell group, a random access response based on the second random access response window size for the second cell group.
1. A method performed by a terminal in a wireless communication system, the method comprising:
identifying whether a number of transmissions of a random access preamble satisfies a pre-defined condition;
performing a first procedure, in case that the random access preamble is transmitted on a first primary cell of a master cell group (MCG) and the number of transmissions of the random access preamble satisfies the pre-defined condition; and
performing a second procedure, in case that the random access preamble is transmitted on a second primary cell of a secondary cell group (SCG) and the number of transmissions of the random access preamble satisfies the pre-defined condition,
wherein performing the first procedure comprises initiating a radio resource control (RRC) connection re-establishment procedure, and
wherein performing the second procedure comprises transmitting first information to report a problem associated with a connection of the SCG, the first information including a type of the problem.
2. The method of claim 1 , wherein identifying whether the number of transmissions of the random access preamble satisfies the pre-defined condition further comprises:
determining that the pre-defined condition is satisfied, in case that the number of transmissions of the random access preamble is equal to a value of adding 1 to a maximum transmission number.
3. The method of claim 1 , wherein performing the second procedure further comprises:
identifying that a time alignment timer is expired.
4. The method of claim 3 , wherein performing the second procedure further comprises:
releasing a physical uplink control channel (PUCCH) resource for the second primary cell of the SCG.
5. The method of claim 1 , wherein the first information is transmitted on the MCG.
6. The method of claim 1 , wherein performing the first procedure further comprises:
transmitting a message for requesting a RRC connection re-establishment.
7. The method of claim 1 , wherein the pre-defined condition is associated with at least one of a first maximum transmission number for the first primary cell of the MCG or a second maximum transmission number for the second primary cell of the SCG.
8. The method of claim 1 , wherein the type of the problem indicates a random access problem.
9. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to control to:
identify whether a number of transmissions of a random access preamble satisfies a pre-defined condition,
perform a first procedure, in case that the random access preamble is transmitted on a first primary cell of a master cell group (MCG) and the number of transmissions of the random access preamble satisfies the pre-defined condition, and
perform a second procedure, in case that the random access preamble is transmitted on a second primary cell of a secondary cell group (SCG) and the number of transmissions of the random access preamble satisfies the pre-defined condition,
wherein the first procedure comprises initiating a radio resource control (RRC) connection re-establishment procedure, and
wherein the second procedure comprises transmitting first information to report a problem associated with a connection of the SCG, the first information including a type of the problem.
10. The terminal of claim 9 , wherein the controller is configured to:
determine that the pre-defined condition is satisfied, in case that the number of transmissions of the random access preamble is equal to a value of adding 1 to a maximum transmission number.
11. The terminal of claim 9 , wherein the controller is configured to:
identify that a time alignment timer is expired.
12. The terminal of claim 11 , wherein the controller is further configured to:
release a physical uplink control channel (PUCCH) resource for the second primary cell of the SCG.
13. The terminal of claim 9 , wherein the first information is transmitted on the MCG.
14. The terminal of claim 9 , wherein the controller is configured to:
control the transceiver to transmit a message for requesting a RRC connection re-establishment, in case that the first procedure is performed.
15. The terminal of claim 9 , wherein the pre-defined condition is associated with at least one of a first maximum transmission number for the first primary cell of the MCG or a second maximum transmission number for the second primary cell of the SCG.
16. The terminal of claim 9 , wherein the type of the problem indicates a random access problem.