Systems and methods for uplink control information signaling design
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsYu Yang, Daniel Larsson
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Abstract
According to certain embodiments, a method by a wireless device is provided for transmitting uplink control information (UCI) on a serving cell on the unlicensed spectrum. The method includes formatting the UCI as a shortened control signalling transmission and transmitting the UCI formatted as the shortened control signalling transmission to a network node. The shortened control signalling transmission is transmitted during a transmission opportunity on the serving cell on the unlicensed spectrum without performing channel sensing.
Claims23
A wireless device for transmitting uplink control information (UCI) on a serving cell on the unlicensed spectrum, the wireless device comprising:
- a processor;
- and
- memory containing instructions that, when executed by the processor, cause the wireless device to:
- format the UCI as a shortened control signalling transmission;
- and
- transmit the UCI formatted as the shortened control signalling transmission to a network node,
- wherein the shortened control signalling transmission is transmitted during a transmission opportunity on the serving cell on the unlicensed spectrum without performing channel sensing.
A wireless device for transmitting at least one HARQ acknowledgement on a serving cell on the unlicensed spectrum, the wireless device comprising:
- a processor;
- and
- memory containing instructions that, when executed by the processor, cause the wireless device to:
- determine whether the wireless device has channel access to at least one serving cell on the unlicensed spectrum on which physical uplink shared channel (PUSCH) transmission is scheduled;
- when the wireless device has channel access to the at least one serving cell on which the PUSCH transmission is scheduled, transmit the at least one HARQ acknowledgement on the at least one serving cell multiplexed with scheduled PUSCH data;
- and
- when the wireless device does not have channel access to the at least one serving cell on which the PUSCH transmission is scheduled:
- format the at least one HARQ acknowledgement in a shortened physical uplink control channel (PUCCH) transmission format;
- and
- transmit the at least one HARQ acknowledgement in the shortened PUCCH transmission format during a transmission opportunity on at least one serving cell on the unlicensed spectrum without performing channel sensing.
A network node for configuring transmission of uplink control information (UCI) on a selected one of a plurality of cells, the network node comprising:
- a processor;
- and
- memory containing instructions that, when executed by the processor, cause the network node to:
- assign each of the plurality of cells to a selected one of a plurality of cell groups;
- transmit a cell selection to a wireless device, the cell selection identifying, for each of the plurality of cell groups, a selected cell for use in transmitting the UCI, wherein the cell selection ensures that the transmission of the UCI is made on a spectrum of a particular type, the particular type being either licensed spectrum or unlicensed spectrum.
A wireless device for transmitting uplink control information (UCI), the wireless device comprising:
- a processor;
- and
- memory containing instructions that, when executed by the processor, cause the wireless device to:
- perform a carrier sensing procedure;
- based on the carrier sensing procedure, determine whether the wireless device has channel access on at least one serving cell on the unlicensed spectrum;
- when the wireless device has channel access to the at least one serving cell on the unlicensed spectrum, transmit the UCI on the at least one serving cell;
- and
- when the wireless device does not have channel access to the at least one serving cell on the unlicensed spectrum, schedule the UCI to be transmitted on at least one serving cell on the licensed spectrum in a next transmission.
Dependencies are inferred from the claim text.