Method and apparatus for transceiving wireless signal in wireless communication system
地域：
Seoul
摘要
The present invention relates to a wireless communication system, specifically to a method comprising the steps of: configuring a PCell of a licensed band and an SCell of an unlicensed band for a base station; receiving resource configuration information concerning the SCell by means of a physical downlink control channel (PDCCH) of the PCell; configuring a subframe set within a temporary time duration on the SCell on the basis of the resource configuration information; and communicating with the base station by means of the subframe set temporarily configured on the SCell, and to an apparatus for the method.
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This application is the National Stage filing under 35 U.S.C. 371 of International Application No. PCT/KR2015/007879, filed on Jul. 28, 2015, which claims the benefit of U.S. Provisional Application No. 62/029,578, filed on Jul. 28, 2014, U.S. Provisional Application No. 62/031,838, filed on Jul. 31, 2014, U.S. Provisional Application No. 62/033,661, filed on Aug. 6, 2014, U.S. Provisional Application No. 62/058,682, filed on Oct. 2, 2014, U.S. Provisional Application No. 62/082,064, filed on Nov. 19, 2014, and U.S. Provisional Application No. 62/160,620, filed on May 13, 2015, the contents of which are all hereby incorporated by reference herein in their entirety.
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting/receiving a wireless signal. The wireless communication system includes a CA-based (Carrier Aggregation-based) wireless communication system.
Wireless communication systems have been widely deployed to provide various types of communication services including voice and data services. In general, a wireless communication system is a multiple access system that supports communication among multiple users by sharing available system resources (e.g. bandwidth, transmit power, etc.) among the multiple users. The multiple access system may adopt a multiple access scheme such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), or single carrier frequency division multiple access (SC-FDMA).
權(quán)利要求
The invention claimed is:1. A method for performing communication by a User Equipment (UE) in a cellular communication system, the method comprising:receiving resource configuration information about an unlicensed band cell through a Physical Downlink Control Channel (PDCCH); receiving reference signals within a contiguous time period of the unlicensed band cell; and performing a measurement of the reference signals within the contiguous time period of the unlicensed band cell, wherein, for the measurement of the reference signals, power per Resource Element (RE) of the reference signals is constant within the contiguous time period of the unlicensed band cell, wherein the contiguous time period of the unlicensed band cell comprises a plurality of contiguous Orthogonal Frequency Division Multiplexing (OFDM) symbols, and wherein the contiguous time period of the unlicensed band cell is configured based on the resource configuration information. 2. The method according to claim 1 , wherein the contiguous time period of the unlicensed band cell is non-contiguous with another contiguous time period of the unlicensed band cell, and the power per RE of the reference signals of each contiguous time period of the unlicensed band cell is independently configured. 3. The method according to claim 1 , wherein the power per RE of the reference signals includes Cell-specific reference signal (CRS) Energy Per Resource Element (EPRE) or Channel State Information reference signal (CSI-RS) Energy Per Resource Element (EPRE). 4. The method according to claim 1 , wherein a length of the contiguous time period of the unlicensed band cell is pre-indicated through an Radio Resource Control (RRC) message, and a pattern of the contiguous time period of the unlicensed band cell is indicated using the resource configuration information. 5. The method of claim 1 , further comprising:receiving another reference signals through a licensed band cell, and performing measurement of the another reference signals, wherein, for the measurement of the another reference signals, a power per RE of the another reference signals is constant over all subframes until power information is newly configured. 6. A User Equipment (UE) for use in a cellular communication system, the UE comprising:an radio frequency (RF) module including a transceiver; and a processor connected to the RF module, wherein the processor is configured to:receive resource configuration information about an unlicensed band cell through a Physical Downlink Control Channel (PDCCH); receive reference signals within a contiguous time period of the unlicensed band cell; and perform a measurement of the reference signals within the contiguous time period of the unlicensed band cell, wherein, for the measurement of the reference signals, power per Resource Element (RE) of the reference signals is constant within a contiguous time period of the unlicensed band cell, wherein the contiguous time period of the unlicensed band cell comprises a plurality of contiguous Orthogonal Frequency Division Multiplexing (OFDM) symbols, and wherein the contiguous time period of the unlicensed band cell is configured based on the resource configuration information. 7. The UE according to claim 6 , wherein the contiguous time period of the unlicensed band cell is non-contiguous with another contiguous time period of the unlicensed band cell, and the power per RE of the reference signals of each contiguous time period of the unlicensed band cell is independently configured. 8. The UE according to claim 6 , wherein the power per RE of the reference signals includes Cell-specific reference signal (CRS) Energy Per Resource Element (EPRE) or Channel State Information reference signal (CSI-RS) Energy Per Resource Element (EPRE). 9. The UE according to claim 6 , wherein a length of the contiguous time period of the unlicensed band cell is pre-indicated through an Radio Resource Control (RRC) message, and a pattern of the contiguous time period of the unlicensed band cell is indicated using the resource configuration information. 10. The UE of claim 6 , wherein the processor is further configured to receive another reference signals through a licensed band cell, and to perform measurement of the another reference signals,wherein for the measurement of the another reference signals, a power per RE of the another reference signals is constant over all subframes until power information is newly configured. 11. A method for performing communication by a Base Station (BS) in a cellular communication system, the method comprising:transmitting resource configuration information about an unlicensed band cell through a Physical Downlink Control Channel (PDCCH); and transmitting reference signals within a contiguous time period of the unlicensed band cell, wherein, for a measurement of the unlicensed band cell, power per Resource Element (RE) of the reference signals is constant within the contiguous time period of the unlicensed band cell, wherein the contiguous time period of the unlicensed band cell comprises a plurality of contiguous Orthogonal Frequency Division Multiplexing (OFDM) symbols, and wherein the contiguous time period of the unlicensed band cell is configured based on the resource configuration information. 12. The method according to claim 11 , wherein the contiguous time period of the unlicensed band cell is non-contiguous with another contiguous time period of the unlicensed band cell, and the power per RE of the reference signals of each contiguous time period of the unlicensed band cell is independently configured. 13. The method according to claim 11 , wherein the power per RE of the reference signals includes Cell-specific reference signal (CRS) Energy Per Resource Element (EPRE) or Channel State Information reference signal (CSI-RS) Energy Per Resource Element (EPRE). 14. The method according to claim 11 , wherein a length of the contiguous time period of the unlicensed band cell is pre-indicated through an Radio Resource Control (RRC) message, and a pattern of the contiguous time period of the unlicensed band cell is indicated using the resource configuration information. 15. The method of claim 11 , further comprising:transmitting another reference signals through a licensed band cell, wherein for the licensed band cell, a power per RE of the another reference signals is constant over all subframes until power information is newly configured. 16. A Base Station (BS) for use in a cellular communication system, the BS comprising:an radio frequency (RF) module including a transceiver; and a processor connected to the RF module, wherein the processor is configured to:transmit resource configuration information about an unlicensed band cell through a Physical Downlink Control Channel (PDCCH); and transmit reference signals within a contiguous time period of the unlicensed band cell, wherein, for a measurement the unlicensed band cell, power per Resource Element (RE) of the reference signals is constant within the contiguous time period of the unlicensed band cell, wherein the contiguous time period of the unlicensed band cell comprises a plurality of contiguous Orthogonal Frequency Division Multiplexing (OFDM) symbols, and wherein the contiguous time period of the unlicensed band cell is configured based on the resource configuration information. 17. The BS according to claim 16 , wherein the contiguous time period of the unlicensed band cell is non-contiguous with another contiguous time period of the unlicensed band cell, and the power per RE of the reference signals of each contiguous time period of the unlicensed band cell is independently configured. 18. The BS according to claim 16 , wherein the power per RE of the reference signals includes Cell-specific reference signal (CRS) Energy Per Resource Element (EPRE) or Channel State Information reference signal (CSI-RS) Energy Per Resource Element (EPRE). 19. The BS according to claim 16 , wherein a length of the contiguous time period of the unlicensed band cell is pre-indicated through an Radio Resource Control (RRC) message, and a pattern of the contiguous time period of the unlicensed band cell is indicated using the resource configuration information. 20. The BS of claim 16 , wherein the processor is further configured to transmit another reference signals through a licensed band cell, andwherein for the licensed band cell, a power per RE of the another reference signals is constant over all subframes until power information is newly configured.
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