Specialized BWP switch
A method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives, from a base station, one or more BWP configurations for configuring a plurality of BWPs at the UE. The respective one or more BWP parameters of a set of BWP parameters define each respective BWP of the plurality of BWPs. The UE sends a capability indication indicating that the UE is capable of resetting values of one or more parameters of the set of BWP parameters. The UE sends a subset indication indicating that the UE is capable of resetting values of one or more parameters of a subset of BWP parameters from the set of BWP parameters.
1. A method of wireless communication of a user equipment (UE), comprising:
receiving, from a base station, one or more bandwidth part (BWP) configurations for configuring a plurality of BWPs at the UE, wherein respective one or more BWP parameters of a set of BWP parameters define each respective BWP of the plurality of BWPs;
sending a capability indication indicating that the UE is capable of resetting values of one or more parameters of the set of BWP parameters;
sending a subset indication indicating that the UE is capable of resetting values of one or more parameters of a subset of BWP parameters from the set of BWP parameters;
sending, to the base station, an indication of a switch delay;
receiving downlink control information (DCI) including a trigger for switching from a first BWP to a second BWP of the plurality of BWPs;
determining whether values of BWP parameters of the set of BWP parameters other than the subset of BWP parameters remain unchanged between the first BWP and the second BWP: and
switching from the first BWP to the second BWP or not based on the determining result.
2. The method of claim 1 , wherein the subset indication is a bit map.
3. The method of claim 1 , wherein the subset of BWP parameters includes parameters related to one or more of monitoring Physical Downlink Control Channel (PDCCH), reporting channel state information, scheduling PDCCH and Physical Downlink Shared Channel (PDSCH), a maximum number of multiple input multiple output (MIMO) layers, and a total number of resource blocks (RBs) in a BWP.
4. The method of claim 1 , wherein the switching from the first BWP to the second BWP or not based on the determining result includes:
when the values of BWP parameters of the set of BWP parameters other than the subset of BWP parameters remain unchanged, switching from the first BWP to the second BWP subject to the switch delay.
5. The method of claim 1 , wherein the switching from the first BWP to the second BWP or not based on the determining result includes:
only when the values of BWP parameters of the set of BWP parameters other than the subset of BWP parameters remain unchanged, switching from the first BWP to the second BWP.
6. The method of claim 1 , further comprising:
sending, to the base station, an indication of a shortened switch delay, a length of the shortened switch delay being shorter than a length of the switch delay.
7. The method of claim 6 , wherein the switching from the first BWP to the second BWP based on the determining result includes:
when the values of BWP parameters of the set of BWP parameters other than the subset of BWP parameters remain unchanged, switching from the first BWP to the second BWP subject to the shortened switch delay.
8. The method of claim 6 , wherein the switching from the first BWP to the second BWP or not based on the determining result includes:
when any value of BWP parameters of the set of BWP parameters other than the subset of BWP parameters is changed, switching from the first BWP to the second BWP subject to the switch delay longer than the shortened switch delay.
9. The method of claim 1 , wherein the one or more BWP configurations specify identities or values of BWP parameters, from the respective one or more BWP parameters defining the each respective BWP, that differ from a reference set of BWP parameters.
10. An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive, from a base station, one or more bandwidth part (BWP) configurations for configuring a plurality of BWPs at the UE, wherein respective one or more BWP parameters of a set of BWP parameters define each respective BWP of the plurality of BWPs;
send a capability indication indicating that the UE is capable of resetting values of one or more parameters of the set of BWP parameters;
send a subset indication indicating that the UE is capable of resetting values of one or more parameters of a subset of BWP parameters from the set of BWP parameters;
send, to the base station, an indication of a switch delay;
receive downlink control information (DCI) including a trigger for switching from a first BWP to a second BWP of the plurality of BWPs;
determine whether values of BWP parameters of the set of BWP parameters other than the subset of BWP parameters remain unchanged between the first BWP and the second BWP; and
switch from the first BWP to the second BWP or not based on the determining result.
11. The apparatus of claim 10 , wherein the subset indication is a bit map.
12. The apparatus of claim 10 , wherein the subset of BWP parameters includes parameters related to one or more of monitoring Physical Downlink Control Channel (PDCCH), reporting channel state information, scheduling PDCCH and Physical Downlink Shared Channel (PDSCH), a maximum number of multiple input multiple output (MIMO) layers, and a total number of resource blocks (RBs) in a BWP.
13. The apparatus of claim 10 , wherein to switch from the first BWP to the second BWP or not based on the determining result, the at least one processor is further configured to:
when the values of BWP parameters of the set of BWP parameters other than the subset of BWP parameters remain unchanged, switch from the first BWP to the second BWP subject to the switch delay.
14. The apparatus of claim 10 , wherein to switch from the first BWP to the second BWP or not based on the determining result, the at least one processor is further configured to:
only when the values of BWP parameters of the set of BWP parameters other than the subset of BWP parameters remain unchanged, switch from the first BWP to the second BWP.
15. The apparatus of claim 10 , wherein the at least one processor is further configured to:
send, to the base station, an indication of a shortened switch delay, a length of the shortened switch delay being shorter than a length of the switch delay.
16. The apparatus of claim 15 , wherein to switch from the first BWP to the second BWP based on the determining result, the at least one processor is further configured to:
when the values of BWP parameters of the set of BWP parameters other than the subset of BWP parameters remain unchanged, switch from the first BWP to the second BWP subject to the shortened switch delay.
17. The apparatus of claim 15 , wherein to switch from the first BWP to the second BWP or not based on the determining result, the at least one processor is further configured to:
when any value of BWP parameters of the set of BWP parameters other than the subset of BWP parameters is changed, switch from the first BWP to the second BWP subject to the switch delay longer than the shortened switch delay.
18. The apparatus of claim 10 , wherein the one or more BWP configurations specify identities or values of BWP parameters, from the respective one or more BWP parameters defining the each respective BWP, that differ from a reference set of BWP parameters.