Method and device for information transmission in wireless communication system
The present invention relates to a wireless communication system and more specifically relates to a method and device for transmitting information. A wireless communication system can support carrier aggregation (CA). In one aspect of the present invention, a method, in which a terminal transmits information to a base station in a wireless communication system, comprises the steps of: carrying out rate matching for a preset number of symbols in a subframe for transmitting first information on at least one serving cell formed in the terminal; and transmitting the first information from the subframe in which the rate matching has been carried out, to the base station. Therein, the uplink transmission timing of the one or more serving cells are different from one another, and the preset number is determined in accordance with the difference between the uplink transmission timings of the one or more serving cell.
1. A method for transmitting an uplink signal to a base station by a user equipment in a wireless communication system, the user equipment being configured with a plurality of serving cells, the method comprising:
performing a rate matching for the uplink signal without two single carrier frequency division multiple access (SC-FDMA) symbols within a subframe transmitting the uplink signal, when timing advance values for the plurality of serving cells are different and the subframe transmitting the uplink signal is configured as a subframe for sounding reference signal (SRS) transmission;
mapping the rate-matched uplink signal to at least one SC-FDMA symbol except for last two SC-FDMA symbols within the subframe;
mapping an SRS to a second to last SC-FDMA symbol within the subframe, when the user equipment is configured to transmit the SRS in the subframe; and
transmitting the mapped uplink signal and SRS to the base station in the subframe.
2. The method of claim 1 , wherein the rate matching for the uplink signal is performed without three SC-FDMA symbols and the uplink signal is further mapped except for a starting SC-FDMA symbol within the subframe.
3. The method of claim 1 , wherein the uplink signal is transmitted via a physical uplink control channel (PUCCH) of a primary cell of the plurality of serving cells.
4. A user equipment configured to transmit an uplink signal to a base station in a wireless communication system, the user equipment being configured for a plurality of serving cells, the user equipment comprising:
a processor configured to:
perform a rate matching for the uplink signal without two single carrier frequency division multiple access (SC-FDMA) symbols in a subframe transmitting the uplink signal, when timing advance values for the plurality of serving cells are different and the subframe transmitting the uplink signal is configured as a subframe for sounding reference signal (SRS) transmission,
map the rate-matched uplink signal to at least one SC-FDMA symbol except in the last two SC-FDMA symbols in the subframe, and
map an SRS to a second to last SC-FDMA symbol in the subframe, when the user equipment is configured to transmit the SRS in the subframe; and
a transmission module configured to transmit the mapped uplink signal and SRS to the base station in the subframe.
5. The user equipment of claim 4 , wherein the rate matching for the uplink signal is performed without three SC-FDMA symbols and the uplink signal is further mapped except in a starting SC-FDMA symbol in the subframe.
6. The user equipment of claim 4 , wherein the first information is transmitted via a physical uplink control channel (PUCCH) of a primary cell of the plurality of serving cells.
7. The user equipment of claim 4 , wherein the uplink signal is transmitted via a physical uplink shared channel (PUSCH).
8. The user equipment of claim 4 , wherein each of the timing advance values is used for determining an uplink transmission timing for a corresponding cell.
9. The user equipment of claim 4 , wherein the rate matching includes reducing a channel coding rate or performing a puncturing after a channel coding.
10. The method of claim 1 , wherein the uplink signal is transmitted via a physical uplink shared channel (PUSCH).
11. The method of claim 1 , wherein each of the timing advance values is used for determining an uplink transmission timing for a corresponding cell.
12. The method of claim 1 , wherein the rate matching includes reducing a channel coding rate or performing a puncturing after a channel coding.