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US 11,082,195 B2Granted
PUCCH resource allocation and fallback operation
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsYu Yang, Daniel Larsson, Shaohua Li, Fredrik Lindqvist, Xinghua Song
Life of this patent
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Abstract
Systems and methods are disclosed herein that relate to resource allocation and/or fallback operation for an uplink control channel format, e.g., that supports feedback (e.g., Hybrid Automatic Repeat Request (HARQ) Acknowledgement (ACK) (HARQ-ACK) feedback) for up to a large number (e.g., thirty-two) carriers.
Claims18
A method of transmitting uplink control information for one or more carriers on an uplink control channel, the method performed by a wireless device in a cellular communications network comprising:
- determining whether a first set of one or more conditions for a first uplink control channel format is satisfied, wherein the first uplink control channel format comprises Third Generation Partnership Project (3GPP) Physical Uplink Control Channel (PUCCH) format 1a/1b;
- transmitting an uplink control channel transmission using the first uplink control channel format, when the first set of one or more conditions for the first uplink control channel format is determined to be satisfied;
- determining whether a second set of one or more conditions for a second uplink control channel format is satisfied, when the first set of one or more conditions for the first uplink control channel format is determined to be not satisfied, wherein the second uplink control channel format comprises 3GPP PUCCH format 3;
- transmitting the uplink control channel transmission using the second uplink control channel format, when the second set of one or more conditions for the second uplink control channel format is determined to be satisfied;
- and
- transmitting the uplink control channel transmission using a third uplink control channel format, when the second set of one or more conditions for the second uplink control channel format is determined to be not satisfied, wherein the third uplink control channel format has a maximum PUCCH capacity to support Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) for thirty-two cells;
- wherein transmitting the uplink control channel transmission comprises:
- transmitting the uplink control channel transmission on a Frequency Division Duplexing (FDD) or Time Division Duplexing (TDD) Primary Cell (PCell) according to a carrier aggregation scheme in which the uplink control channel is transmitted on the PCell of the wireless device, wherein the second set of one or more conditions for fallback to format 3 comprises:
- (a) a condition that the wireless device receives a Physical Downlink Shared Channel (PDSCH) only on cells within a segmentation of less than or equal to a second threshold of feedback bits in a sequence of N possible feedback bits where the second threshold has an integer value greater than zero and where N is greater than the second threshold and (b) a condition that no downlink control channel is received by the wireless device on any other cells;
- or
- transmitting the uplink control channel transmission on a FDD or TDD Primary Secondary Cell (pSCell) in a cell group according to a carrier aggregation scheme in which the uplink control channel is transmitted on the pSCell, wherein the pSCell can be either a Primary Cell (PCell) of the wireless device or one of one or more Secondary Cells (SCells) of the wireless device, and wherein the second set of one or more conditions for fallback to format 3 comprises:
- (a) a condition that downlink shared channels are received by the wireless device on one or more SCells in a cell group that correspond to a segmentation of less than or equal to a second threshold of feedback bits in a sequence of N possible feedback bits, where the second threshold has an integer value greater than zero and where N is greater than the second threshold and (b) a condition that no downlink control channel is received by the wireless device on any other SCells in the cell group.
9 more elements
A wireless device enabled to operate in a cellular communications network to transmit uplink control information for one or more carriers on an uplink control channel, comprising:
- one or more transmitters;
- one or more processors;
- and
- memory containing instructions that are executable by the one or more processors whereby the wireless device is operable to:
- determine whether a first set of one or more conditions for a first uplink control channel format is satisfied, wherein the first uplink control channel format comprises Third Generation Partnership Project (3GPP) Physical Uplink Control Channel (PUCCH) format 1a/1b;
- transmit, via the one or more transmitters, an uplink control channel transmission using the first uplink control channel format, when the first set of one or more conditions for the first uplink control channel format is determined to be satisfied;
- determine whether a second set of one or more conditions for a second uplink control channel format is satisfied, when the first set of one or more conditions for the first uplink control channel format is determined to be not satisfied, wherein the second uplink control channel format comprises 3GPP PUCCH format 3;
- transmit, via the one or more transmitters, the uplink control channel transmission using the second uplink control channel format, when the second set of one or more conditions for the second uplink control channel format is determined to be satisfied;
- and
- transmit, via the one or more transmitters, the uplink control channel transmission using a third uplink control channel format, when the second set of one or more conditions for the second uplink control channel format is determined to be not satisfied, wherein the third uplink control channel format has a maximum PUCCH capacity to support Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) for thirty-two cells;
- wherein the wireless device operable to transmit the uplink control channel transmission comprises the wireless device operable to:
- transmit the uplink control channel transmission on a Frequency Division Duplexing (FDD) or Time Division Duplexing (TDD) Primary Cell (PCell) according to a carrier aggregation scheme in which the uplink control channel is transmitted on the PCell of the wireless device, wherein the second set of one or more conditions for fallback to format 3 comprises:
- (a) a condition that the wireless device receives a Physical Downlink Shared Channel (PDSCH) only on cells within a segmentation of less than or equal to a second threshold of feedback bits in a sequence of N possible feedback bits where the second threshold has an integer value greater than zero and where N is greater than the second threshold and (b) a condition that no downlink control channel is received by the wireless device on any other cells;
- or
- transmit the uplink control channel transmission on a FDD or TDD Primary Secondary Cell (pSCell) in a cell group according to a carrier aggregation scheme in which the uplink control channel is transmitted on the pSCell, wherein the pSCell can be either a Primary Cell (PCell) of the wireless device or one of one or more Secondary Cells (SCells) of the wireless device, and wherein the second set of one or more conditions for fallback to format 3 comprises:
- (a) a condition that downlink shared channels are received by the wireless device on one or more SCells in a cell group that correspond to a segmentation of less than or equal to a second threshold of feedback bits in a sequence of N possible feedback bits, where the second threshold has an integer value greater than zero and where N is greater than the second threshold and (b) a condition that no downlink control channel is received by the wireless device on any other SCells in the cell group.
13 more elements
A non-transitory computer readable medium storing software instructions that when executed by one or more processors of a wireless device cause the wireless device to:
- determine whether a first set of one or more conditions for a first uplink control channel format is satisfied, wherein the first uplink control channel format comprises Third Generation Partnership Project (3GPP) Physical Uplink Control Channel (PUCCH) format 1a/1b;
- transmit, via one or more transmitters, an uplink control channel transmission using the first uplink control channel format, when the first set of one or more conditions for the first uplink control channel format is determined to be satisfied;
- determine whether a second set of one or more conditions for a second uplink control channel format is satisfied, when the first set of one or more conditions for the first uplink control channel format is determined to be not satisfied, wherein the second uplink control channel format comprises 3GPP PUCCH format 3;
- transmit, via the one or more transmitters, the uplink control channel transmission using the second uplink control channel format, when the second set of one or more conditions for the second uplink control channel format is determined to be satisfied;
- and
- transmit, via the one or more transmitters, the uplink control channel transmission using a third uplink control channel format, when the second set of one or more conditions for the second uplink control channel format is determined to be not satisfied, wherein the third uplink control channel format has a maximum PUCCH capacity to support Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) for thirty-two cells;
- wherein causing the wireless device to transmit the uplink control channel transmission comprises causing the wireless device to:
- transmit the uplink control channel transmission on a Frequency Division Duplexing (FDD) or Time Division Duplexing (TDD) Primary Cell (PCell) according to a carrier aggregation scheme in which the uplink control channel is transmitted on the PCell of the wireless device, wherein the second set of one or more conditions for fallback to format 3 comprises:
- (a) a condition that the wireless device receives a Physical Downlink Shared Channel (PDSCH) only on cells within a segmentation of less than or equal to a second threshold of feedback bits in a sequence of N possible feedback bits where the second threshold has an integer value greater than zero and where N is greater than the second threshold and (b) a condition that no downlink control channel is received by the wireless device on any other cells;
- or
- transmit the uplink control channel transmission on a FDD or TDD Primary Secondary Cell (pSCell) in a cell group according to a carrier aggregation scheme in which the uplink control channel is transmitted on the pSCell, wherein the pSCell can be either a Primary Cell (PCell) of the wireless device or one of one or more Secondary Cells (SCells) of the wireless device, and wherein the second set of one or more conditions for fallback to format 3 comprises:
- (a) a condition that downlink shared channels are received by the wireless device on one or more SCells in a cell group that correspond to a segmentation of less than or equal to a second threshold of feedback bits in a sequence of N possible feedback bits, where the second threshold has an integer value greater than zero and where N is greater than the second threshold and (b) a condition that no downlink control channel is received by the wireless device on any other SCells in the cell group.
9 more elements
Dependencies are inferred from the claim text.