User equipment, base station, method for a user equipment, and method for a base station
A method for a base station which communicates with a user equipment (UE) in a bandwidth including a plurality of channel access sub-bands in a serving cell is described. The method may comprise sensing each of the plurality of the channel access sub-bands. The method may also comprise transmitting downlink signal after sensing. A counter and a contention window size may be managed per sub-band for channel access.
1. A user equipment (UE) which communicates with a base station, the UE comprising:
receiving circuitry configured to
detect each of a plurality of channel access sub-bands in a bandwidth part (BWP) of a serving cell, and
monitor a physical downlink control channel (PDCCH) in multiple control resource sets (CORESETs), which correspond to different channel access sub-bands of the plurality of channel access sub-bands, frequency resource allocation of each of the CORESETs being defined within a channel access sub-band and not across a channel access sub-band boundary; and
transmitting circuitry configured to transmit uplink signaling after the detection,
wherein
a counter and a contention window size are managed per sub-band for channel access, and
the counter and the contention window size comprise listen before talk (LBT) parameters for the detection.
2. A base station which communicates with a user equipment (UE), the base station comprising:
receiving circuitry configured to detect each of a plurality of channel access sub-bands in a bandwidth part (BWP) of a serving cell; and
transmitting circuitry configured to
transmit downlink signaling after the detection, and
transmit a physical downlink control channel (PDCCH) in multiple control resource sets (CORESETs), which correspond to different channel access sub-bands of the plurality of channel access sub-bands, frequency resource allocation of each of the CORESETs being defined within a channel access sub-band and not across a channel access sub-band boundary,
wherein
a counter and a contention window size are managed per sub-band for channel access, and
the counter and the contention window size comprise listen before talk (LBT) parameters for the detection.
3. A method for a user equipment (UE) which communicates with a base station, the method comprising:
detecting each of a plurality of channel access sub-bands in a bandwidth part (BWP) of a serving cell;
monitoring a physical downlink control channel (PDCCH) in multiple control resource sets (CORESETs), which correspond to different channel access sub-bands of the plurality of channel access sub-bands, frequency resource allocation of each of the CORESETs being defined within a channel access sub-band and not across a channel access sub-band boundary; and
transmitting uplink signaling after the detection,
wherein
a counter and a contention window size are managed per sub-band for channel access, and
the counter and the contention window size comprise listen before talk (LBT) parameters for the detection.
4. A method for a base station which communicates with a user equipment (UE), the method comprising:
detecting each of a plurality of channel access sub-bands in a bandwidth part (BWP) of a serving cell;
transmitting downlink signaling after the detection; and
transmitting a physical downlink control channel (PDCCH) in multiple control resource sets (CORESETs), which correspond to different channel access sub-bands of the plurality of channel access sub-bands, frequency resource allocation of each of the CORESETs being defined within a channel access sub-band and not across a channel access sub-band boundary,
wherein
a counter and a contention window size are managed per sub-band for channel access, and
the counter and the contention window size comprise listen before talk (LBT) parameters for the detection.