Abstract
The present invention relates to a wireless access system supporting multi-carrier aggregation (CA) and discloses various methods and devices for aperiodic feedback of channel state information (CSI). The method for aperiodic feedback of the channel state information (CSI) in the wireless access system supporting the multi-carrier aggregation (CA), according to an embodiment of the present invention, comprises the steps of: receiving a first message including an aperiodic CSI request field and uplink grant from a base station; receiving a second message including bitmap information indicating a downlink component carrier (DL CC) subjected to CSI measurement from the base station; measuring the CSI in consideration of at least one of the aperiodic CSI request, uplink grant, and bitmap information; and transmitting the measured CSI to the base station through a physical uplink shared channel (PUSCH) to thereby receive aperiodic feedback of the same.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
4G | 02/10/2014 | ISLD-201409-053 | LG |
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4G | 01/12/2016 | ISLD-201611-011 | LG | No | Family Member | ||||
4G | 01/03/2017 | ISLD-201702-022 | LG |
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5G | 20/10/2018 | ISLD-201810-050 | LG |
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Specification Information
Specification Information
Technologies
Family Information
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All Pending Patents In Patent Family : | ---- |
Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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EP2600547A1 | 4G | 02/10/2014 | ISLD-201409-053 | LG |
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EP2600547A1 | 4G | 01/12/2016 | ISLD-201611-011 | LG | Yes | Family Member | ||||
EP2600547A1 | 4G | 01/03/2017 | ISLD-201702-022 | LG |
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EP2600547A1 | 5G | 20/10/2018 | ISLD-201810-050 | LG |
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EP2600547A4 | 4G | 01/12/2016 | ISLD-201611-011 | LG | Yes | Family Member | ||||
EP2600547A4 | 4G | 01/03/2017 | ISLD-201702-022 | LG |
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EP2600547A4 | 5G | 20/10/2018 | ISLD-201810-050 | LG |
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US10243716B2 | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Channel Status Information(CSI) Reporting
Product
User Equipment (UE/Terminal)
Use Cases
Services
Claim
1-15. (canceled)
16. A method for transmitting an aperiodic feedback in a wireless access system supporting multicarrier aggregation, the method performed by a user equipment (UE) and comprising:
receiving a radio resource control (RRC) signal including mode information configuring a feedback mode for the aperiodic feedback and carrier information indicating two or more downlink component carriers (DL CCs) the aperiodic feedback is to be triggered; measuring channel state information (CSI) for the two or more DL CCs according to the feedback mode; receiving a downlink control information (DCI) format 0 including a carrier indicator field and a request field, the request field indicating that the aperiodic feedback is triggered for the two or more DL CCs; and transmitting the aperiodic feedback including the measured CSI though a physical uplink shared channel (PUSCH) on an uplink component carrier (UL CC) indicated by the carrier indicator field, wherein the PUSCH is transmitted k subframes after receiving the DCI format 0.
17. The method according to claim 16, wherein the CSI includes at least one of a precoding matrix indicator (PMI), a wideband channel quality indicator (WB CQI), and a subband channel quality indicator (SB CQI).
18. The method according to claim 16, wherein k is 4 in case of a Frequency division duplex (FDD), and k is set according to an UL/DL configuration table in case of a time division duplex (TDD).
19. The method according to claim 16, wherein a size of the request field is set to 2 bits for indicating that the two or more DL CCs are triggered for the aperiodic feedback.
20. The method according to claim 16, wherein the CSI includes a channel quality indicator (CQI) which has joint coded with two or more CQIs for each of the two or more DL CCs.
21. A method for receiving an aperiodic feedback in a wireless access system supporting multicarrier aggregation, the method performed by an evolved Node-B (eNB) and comprising:
transmitting a radio resource control (RRC) signal including mode information configuring a feedback mode for the aperiodic feedback and carrier information indicating two or more downlink component carriers (DL CCs) the aperiodic feedback is to be triggered; transmitting a downlink control information (DCI) format 0 including a carrier indicator field and a request field, the request field indicating that an aperiodic feedback is triggered for the two or more DL CCs; and receiving the aperiodic feedback including channel state information (CSI) through a physical uplink shared channel (PUSCH) on an uplink component carrier (UL CC) indicated by the carrier indicator field, wherein the CSI is measured according to the feedback mode, and wherein the PUSCH is transmitted k subframes after receiving the DCI format 0.
22. The method according to claim 21, wherein the CSI includes at least one of a precoding matrix indicator (PMI) a wideband channel quality indicator (WB CQI) and a subband channel quality indicator (SB CQI).
23. The method according to claim 21, wherein k is 4 in case of a Frequency division duplex (FDD) and k is set according to an UL/DL configuration table in case of a time division duplex (TDD).
24. The method according to claim 21, wherein a size of the request field is set to 2 bits for indicating that the two or more DL CCs are triggered for the aperiodic feedback.
25. The method according to claim 21, wherein the CSI includes a channel quality indicator (CQI) which has joint coded with two or more CQIs for each of the two or more DL CCs.
26. An apparatus for transmitting an aperiodic feedback in a wireless access system supporting multicarrier aggregation, the apparatus comprising:
a transmitter; a receiver; a processor configured to support for transmitting the aperiodic feedback, wherein the processor controls the receiver to:
receive a radio resource control (RRC) signal including mode information configuring a feedback mode for the aperiodic feedback and carrier information indicating two or more downlink component carriers (DL CCs) the aperiodic feedback is to be triggered,
measure channel state information (CSI) for the two or more DL CCs according to the feedback mode, and
receive a downlink control information (DCI) format 0 including a carrier indicator field and a request field, the request field indicating that the aperiodic feedback is triggered for the two or more DL CCs,
wherein the processor controls the transmitter to transmit the aperiodic feedback including the measured CSI though a physical uplink shared channel (PUSCH) on an uplink component carrier (UL CC) indicated by the carrier indicator field, and wherein the PUSCH is transmitted k subframes after receiving the DCI format 0.
27. The apparatus according to claim 26, wherein the CSI includes at least one of a precoding matrix indicator (PMI), a wideband channel quality indicator (WB CQI) and a subband channel quality indicator (SB CQI).
28. The apparatus according to claim 26, wherein k is 4 in case of a Frequency division duplex (FDD) and k is set according to an UL/DL configuration table in case of a time division duplex (TDD).
29. The apparatus according to claim 26, wherein a size of the request field is set to 2 bits for indicating that the two or more DL CCs are triggered for the aperiodic feedback.
30. The apparatus according to claim 26, wherein the CSI includes a channel quality indicator (CQI) which has joint coded with two or more CQIs for each of the two or more DL CCs.
31. An apparatus for receiving an aperiodic feedback in a wireless access system supporting multicarrier aggregation, the apparatus comprising:
a transmitter; a receiver; and a processor configured to support for receiving the aperiodic feedback, wherein the processor controls the transmitter to:
transmit a radio resource control (RRC) signal including mode information configuring a feedback mode for the aperiodic feedback and carrier information indicating two or more downlink component carriers (DL CCs) the aperiodic feedback is to be triggered, and
transmit a downlink control information (DCI) format 0 including a carrier indicator field and a request field, the request field indicating that an aperiodic feedback is triggered for the two or more DL CCs,
wherein the processor controls the reception module to receive the aperiodic feedback including channel state information (CSI) through a physical uplink shared channel (PUSCH) on an uplink component carrier (UL CC) indicated by the carrier indicator field, wherein the CSI is measured according to the feedback mode, and wherein the PUSCH is transmitted k subframes after receiving the DCI format 0.
32. The apparatus according to claim 31, wherein the CSI includes at least one of a precoding matrix indicator (PMI) a wideband channel quality indicator (WB CQI), and a subband channel quality indicator (SB CQI).
33. The apparatus according to claim 31, wherein k is 4 in case of a Frequency division duplex (FDD) and k is set according to an UL/DL configuration table in case of a time division duplex (TDD).
34. The apparatus according to claim 31, wherein a size of the request field is set to 2 bits for indicating that the two or more DL CCs are triggered for the aperiodic feedback.
35. The apparatus according to claim 31, wherein the CSI includes a channel quality indicator (CQI) which has joint coded with two or more CQIs for each of the two or more DL CCs.
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Patent number:US2018076944A1
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