Downlink control information with bandwidth part indicator for multi-cell scheduling
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) with a bandwidth part (BWP) indicator field with a value mapped to a set of BWPs for a set of scheduled cells, a mapping of the value to the set of BWPs being based at least in part on satisfaction, by at least one scheduled cell, of a condition relating to a quantity of BWPs configured for the at least one scheduled cell. The UE may communicate on the set of BWPs of the set of scheduled cells based at least in part on the mapping of the value to the set of BWPs. Numerous other aspects are described.
1 . A user equipment (UE) for wireless communication, comprising:
one or more antennas; and
one or more processors, coupled to one or more memories, configured to:
wirelessly receive downlink control information (DCI) with a bandwidth part (BWP) indicator field with a value mapped to a set of BWPs for a plurality of scheduled cells, a mapping of the value to the set of BWPs being based at least in part on an ascending order of BWP identifiers when each cell, of the plurality of scheduled cells, has a quantity of BWPs that satisfies a threshold; and
wirelessly communicate on the set of BWPs based at least in part on the mapping of the value to the set of BWPs.
2 . The UE of claim 1 , wherein the one or more processors are further configured to:
receive radio resource control signaling identifying the threshold.
3 . The UE of claim 1 , wherein the mapping of the value to the set of BWPs is based at least in part on a BWP indicator configuration specified in a specification table when the quantity of BWPs does not satisfy the threshold for one or more cells of the plurality of scheduled cells.
4 . The UE of claim 1 , wherein the value is mapped to at least one null entry in a BWP table for a BWP, of the set of BWPs, the BWP being for a scheduled cell of the plurality of scheduled cells.
5 . The UE of claim 4 , wherein the DCI indicates no BWP switch for the BWP based at least in part on the value mapping to the at least one null entry.
6 . The UE of claim 4 , wherein the DCI indicates a BWP switch for the BWP based at least in part on the value mapping to the at least one null entry.
7 . The UE of claim 4 , wherein the value maps to another entry in the BWP table based at least in part on the value mapping to the at least one null entry.
8 . The UE of claim 1 , wherein the one or more processors are further configured to:
receive radio resource control (RRC) signaling including a parameter associated with identifying a set of BWP identifiers for a group of cells, the group of cells including the plurality of scheduled cells, wherein each BWP identifier, of the set of BWP identifiers, maps to at least one possible value for the BWP indicator field based at least in part on the set of BWP identifiers for the group of cells.
9 . The UE of claim 1 , wherein the one or more processors are configured to:
forgo monitoring, during a switching gap between receiving the DCI and communicating on the set of BWPs, of a scheduling cell on which the DCI is received.
10 . The UE of claim 1 , wherein the one or more processors are configured to:
monitor, during a switching gap between receiving the DCI and communicating on the set of BWPs, a scheduling cell on which the DCI is received based at least in part on the DCI not having an indicator of a change to a payload of a DCI format of the DCI.
11 . The UE of claim 10 , wherein the one or more processors are further configured to:
receive, during the switching gap, scheduling information for one or more of the scheduling cells, of the plurality of scheduled cells, for which a BWP switch is not indicated.
12 . The UE of claim 1 , wherein the quantity of BWPs satisfies the threshold when the quantity of BWPs is less than or equal to 3.
13 . The UE of claim 1 , wherein the one or more processors, to wirelessly communicate on the set of BWPs, are configured to:
wirelessly transmit a physical uplink shared channel (PUSCH) on the set of BWPs.
14 . A network node for wireless communication, comprising:
one or more antennas; and
one or more processors, coupled to one or more memories, configured to:
wirelessly transmit downlink control information (DCI) with a bandwidth part (BWP) indicator field with a value mapped to a set of BWPs for a plurality of scheduled cells, a mapping of the value to the set of BWPs being based at least in part on an ascending order of BWP identifiers when each cell, of the plurality of scheduled cells, has a quantity of BWPs that satisfies a threshold; and
wirelessly communicate on the set of BWPs based at least in part on the mapping of the value to the set of BWPs.
15 . The network node of claim 14 , wherein the one or more processors are further configured to:
transmit radio resource control signaling identifying the threshold.
16 . The network node of claim 14 , wherein the mapping of the value to the set of BWPs is based at least in part on a BWP indicator configuration specified in a specification table when the quantity of BWPs does not satisfy the threshold for one or more cells of the plurality of scheduled cells.
17 . The network node of claim 14 , wherein the value maps to at least one null entry in a BWP table for a BWP, of the set of BWPs, the BWP being for a scheduled cell of the plurality of scheduled cells.
18 . The network node of claim 17 , wherein the DCI indicates no BWP switch for the BWP based at least in part on the value mapping to the at least one null entry.
19 . The network node of claim 17 , wherein the DCI indicates a BWP switch for the BWP based at least in part on the value mapping to the at least one null entry.
20 . The network node of claim 17 , wherein the value maps to another entry in the BWP table based at least in part on the value mapping to the at least one null entry.
21 . The network node of claim 14 , wherein the one or more processors are further configured to:
transmit radio resource control (RRC) signaling including a parameter associated with identifying a set of BWP identifiers for a group of cells, the group of cells including the plurality of scheduled cells, wherein each BWP identifier, of the set of BWP identifiers, maps to at least one possible value for the BWP indicator field based at least in part on the set of BWP identifiers for the group of cells.
22 . The network node of claim 14 , wherein the one or more processors are configured to:
forgo transmitting, during a switching gap between receiving the DCI and communicating on the set of BWPs, on a scheduling cell on which the DCI is transmitted.
23 . The network node of claim 14 , wherein the one or more processors are configured to:
transmit, during a switching gap between receiving the DCI and communicating on the set of BWPs, on a scheduling cell on which the DCI is transmitted based at least in part on the DCI not having an indicator of a change to a payload of a DCI format of the DCI.
24 . The network node of claim 23 , wherein the one or more processors are further configured to:
transmit, during the switching gap, scheduling information for one or more of the scheduling cells, of the plurality of scheduled cells, for which a BWP switch is not indicated.
25 . The network node of claim 14 , wherein the one or more processors, to wirelessly communicate on the set of BWPs, are configured to:
wirelessly receive a physical uplink shared channel (PUSCH) on the set of BWPs.
26 . A method of wireless communication performed by a user equipment (UE), comprising:
wirelessly receiving downlink control information (DCI) with a bandwidth part (BWP) indicator field with a value mapped to a set of BWPs for a plurality of scheduled cells, a mapping of the value to the set of BWPs being based at least in part on an ascending order of BWP identifiers when each cell, of the plurality of scheduled cells, has a quantity of BWPs that satisfies a threshold; and
wirelessly communicating on the set of BWPs based at least in part on the mapping of the value to the set of BWPs.
27 . The method of claim 26 , wherein the quantity of BWPs satisfies the threshold when the quantity of BWPs is less than or equal to 3.
28 . The method of claim 26 , wherein wirelessly communicating on the set of BWPs comprises:
wirelessly transmitting a physical uplink shared channel (PUSCH) on the set of BWPs.
29 . A method of wireless communication performed by a network node, comprising:
wirelessly transmitting downlink control information (DCI) with a bandwidth part (BWP) indicator field with a value mapped to a set of BWPs for a plurality of scheduled cells, a mapping of the value to the set of BWPs being based at least in part on an ascending order of BWP identifiers when each cell, of the plurality of scheduled cells, has a quantity of BWPs that satisfies a threshold; and
wirelessly communicating on the set of BWPs based at least in part on the mapping of the value to the set of BWPs.
30 . The method of claim 29 , wherein wirelessly communicating on the set of BWPs comprises:
wirelessly receiving a physical uplink shared channel (PUSCH) on the set of BWPs.