Bandwidth part-specific downlink-uplink patterns
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a configuration of a plurality of bandwidth parts (BWPs) in a frequency band, wherein the configuration identifies a respective BWP-specific downlink (DL)-uplink (UL) pattern for each BWP of the plurality of BWPs, and wherein at least two of BWPs of the plurality of BWPs are configured with different BWP-specific DL-UL patterns and wherein each DL-UL pattern specifies which time intervals of a plurality of time intervals are dedicated to downlink and which time intervals of the plurality of time intervals are dedicated to uplink. The UE may communicate with the base station in one or more active BWPs of the plurality of BWPs using the respective BWP-specific DL-UL pattern for each of the one or more active BWPs. Numerous other aspects are described.
1 . A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
receive, from a base station operating in a full-duplex (FD) mode, a configuration of a plurality of bandwidth parts (BWPs), the configuration identifying:
a first BWP-specific downlink (DL)-uplink (UL) pattern for a first set of BWPs of the plurality of BWPs, and
a second BWP-specific DL-UL pattern for a second set of BWPs of the plurality of BWPs, wherein the second BWP-specific DL-UL pattern is different than the first BWP-specific DL-UL pattern; and
communicate, in a half-duplex mode or a full-duplex mode, with the base station in the plurality of BWPs using the first BWP-specific DL-UL pattern and the second BWP-specific DL-UL pattern, wherein whether to communicate in the half-duplex mode or the full-duplex mode in one or more time intervals is based at least in part on whether a time-interval format in the first BWP-specific DL-UL pattern corresponding to the one or more time intervals is the same as or different from a time-interval format in the second BWP-specific DL-UL pattern corresponding to the one or more time intervals.
2 . The UE of claim 1 , wherein the first BWP-specific DL-UL pattern specifies which slots of a plurality of slots are dedicated to downlink and which slots of the plurality of slots are dedicated to uplink.
3 . The UE of claim 1 , wherein the plurality of BWPs includes BWPs that are activated at a same time.
4 . The UE of claim 1 , wherein, for each of the plurality of BWPs, a respective BWP-specific DL-UL pattern indicates a pattern of time-interval formats for a plurality of time intervals and the pattern of time-interval formats includes one or more downlink time intervals and one or more uplink time intervals.
5 . The UE of claim 1 , wherein the plurality of BWPs includes a first active BWP and a second active BWP, and wherein the one or more processors, to communicate with the base station, are configured to:
communicate with the base station in an in-band full-duplex (IBFD) mode in time intervals having different time-interval formats in the first BWP-specific DL-UL pattern and the second BWP-specific DL-UL pattern, wherein the first active BWP overlaps with the second active BWP, or
communicate with the base station in a sub-band full-duplex (SBFD) mode in time intervals having different time-interval formats in the first BWP-specific DL-UL pattern and the second BWP-specific DL-UL pattern, wherein the first active BWP is adjacent to the second active BWP or the first active BWP is separated from the second active BWP by a guard band.
6 . The UE of claim 1 , wherein the one or more processors, to communicate with the base station, are configured to:
communicate, in the half-duplex mode, with the base station in a combined BWP that includes a first active BWP and a second active BWP in time intervals having a same time-interval format in the first BWP-specific DL-UL pattern and the second BWP-specific DL-UL pattern, wherein the first active BWP and the second active BWP are separated by a guard band, and the combined BWP includes the first active BWP, the second active BWP, and the guard band.
7 . The UE of claim 6 , wherein the one or more processors, to communicate with the base station, are configured to:
communicate with the base station in the combined BWP that includes the first active BWP, the second active BWP, and the guard band based at least in part on a determination that a size of the guard band satisfies a threshold.
8 . The UE of claim 1 , wherein the configuration is included in a radio resource control (RRC) message.
9 . The UE of claim 1 , wherein, for one or more BWPs of the plurality of BWPs, the pattern of time-interval formats further includes one or more flexible time intervals, and wherein the one or more processors are further configured to:
receive, from the base station, a slot format indicator (SFI) that indicates, for at least one BWP of the one or more BWPs, that a flexible time interval in a respective BWP-specific DL-UL pattern configured for the at least one BWP is to be used as a downlink time interval or an uplink time interval.
10 . The UE of claim 9 , wherein the SFI is included in downlink control information (DCI), and the DCI further includes an indication of the at least one BWP to which the SFI is to be applied.
11 . A base station for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
transmit, to a user equipment (UE) operating in a full-duplex (FD) mode, a configuration of a first set of bandwidth parts (BWPs) and a second set of BWPs, wherein the configuration identifies a first BWP-specific downlink (DL)-uplink (UL) pattern for the first set of BWPs and a second BWP-specific DL-UL pattern for the second set of BWPs that is different than the first BWP-specific DL-UL pattern; and
communicate, in a half-duplex mode or a full-duplex mode, with the UE in multiple active BWPs of the plurality of BWPs using the first BWP-specific DL-UL pattern and the second BWP-specific DL-UL pattern, wherein whether to communicate in the half-duplex mode or the full-duplex mode in one or more time intervals is based at least in part on whether a time-interval format in the first BWP-specific DL-UL pattern corresponding to the one or more time intervals is the same as or different from a time-interval format in the second BWP-specific DL-UL pattern corresponding to the one or more time intervals.
12 . The base station of claim 11 , wherein, for each of the plurality of BWPs, a respective BWP-specific DL-UL pattern indicates a pattern of time-interval formats for a plurality of time intervals and the pattern of time-interval formats includes one or more downlink time intervals and one or more uplink time intervals.
13 . The base station of claim 11 , wherein the multiple active BWPs include a first active BWP configured with a first BWP-specific DL-UL pattern and a second active BWP configured with a second BWP-specific DL-UL pattern, and wherein the one or more processors, to communicate with the UE, are configured to:
communicate with the UE in the half-duplex mode in the one or more time intervals having a same time-interval format in the first BWP-specific DL-UL pattern and the second BWP-specific DL-UL pattern; and
communicate with the UE in the full-duplex mode in the one or more time intervals having different time-interval formats in the first BWP-specific DL-UL pattern and the second BWP-specific DL-UL pattern.
14 . The base station of claim 11 , wherein, for one or more BWPs of the plurality of BWPs, the pattern of time-interval formats further includes one or more flexible time intervals, and wherein the one or more processors are further configured to:
transmit, to the UE, a slot format indicator (SFI) that indicates, for at least one BWP of the one or more BWPs, that a flexible time interval in a respective BWP-specific DL-UL pattern configured for the at least one BWP is to be used as a downlink time interval or an uplink time interval.
15 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving, from a base station operating in a full-duplex (FD) mode, a configuration of a plurality of bandwidth parts (BWPs), the configuration identifying:
a first BWP-specific downlink (DL)-uplink (UL) pattern for a first set of BWPs of the plurality of BWPs,
a second BWP-specific DL-UL pattern for a second set of BWPs of the plurality of BWPs, wherein the second BWP specific DL-UL pattern is different than the first BWP-specific DL-UL pattern; and
communicating, in a half-duplex mode or a full-duplex mode, with the base station in the plurality of BWPs using the first BWP-specific DL-UL pattern and the second BWP-specific DL-UL pattern, wherein whether to communicate in the half-duplex mode or the full-duplex mode in one or more time intervals is based at least in part on whether a time-interval format in the first BWP-specific DL-UL pattern corresponding to the one or more time intervals is the same as or different from a time-interval format in the second BWP-specific DL-UL pattern corresponding to the one or more time intervals.
16 . The method of claim 15 , wherein the first BWP-specific DL-UL pattern specifies which slots of a plurality of slots are dedicated to downlink and which slots of the plurality of slots are dedicated to uplink.
17 . The method of claim 15 , wherein the plurality of BWPs includes BWPs that are activated at a same time.
18 . The method of claim 15 , wherein the configuration is included in a radio resource control (RRC) message.
19 . The method of claim 15 , wherein, for one or more BWPs of the plurality of BWPs, the pattern of time-interval formats further includes one or more flexible time intervals, wherein the method further comprises:
receiving, from the base station, a slot format indicator (SFI) that indicates, for at least one BWP of the one or more BWPs, that a flexible time interval in a respective BWP-specific DL-UL pattern configured for the at least one BWP is to be used as a downlink time interval or an uplink time interval.