Techniques in measurement gap (MG) configurations with bandwidth part (BWP)
Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for configuring and utilizing measurement gaps (MGs) based on bandwidth part (BWP) in intra-frequency measurements in New Radio (NR) involved networks. Various embodiments describe how to utilize (or not utilize) one or more configured MGs so that a user equipment (UE) and/or an access node (AN) may improve throughput performance, network efficiency and other efficiencies. Other embodiments may be described and claimed.
1. One or more non-transitory, computer-readable media (CRM) comprising instructions to, upon execution of the instructions by one or more processors of a user equipment (UE), cause the UE to:
configure a capability of measurement gap (MG) activation for the UE to activate an MG that has been configured;
decode, upon reception of a message from an access node (AN), an MG information element (IE) that configures a bandwidth part (BWP) and configures an MG in the configured BWP;
activate the configured BWP to become an active BWP;
activate the configured MG in the active BWP for measurement of a synchronization signal block (SSB) in an initial BWP that is different from the active BWP, wherein the initial BWP contains the SSB for measurement, and the initial BWP is configured for the UE to use for an initial access to a primary cell (PCell) or configured for the UE to operate at a secondary cell (SCell) activation; and
measure the SSB in the initial BWP during an intra-frequency measurement with the activated MG.
2. The one or more non-transitory CRM of claim 1 , wherein to activate the MG, the instructions further cause the UE to determine that the active BWP is different from the initial BWP.
3. The one or more non-transitory CRM of claim 1 , wherein to activate the MG, the instructions further cause the UE to determine that the active BWP and the initial BWP have different carrier frequencies, or subcarrier spacings (SCSs), or both.
4. The one or more non-transitory CRM of claim 1 , wherein the instructions further cause the UE to determine that the active BWP is a same BWP as the initial BWP, or that the active BWP and the initial BWP have a same carrier frequency and subcarrier spacing (SCS), and the UE is to refrain from activating the MG.
5. The one or more non-transitory CRM of claim 1 , wherein to activate the MG and to measure the SSB with the MG, the instructions further cause the UE to:
measure the SSB with respect to a carrier frequency and subcarrier spacing (SCS) of the initial BWP during the intra-frequency measurement; and
refrain from switching to the active BWP during the intra-frequency measurement.
6. The one or more non-transitory CRM of claim 1 , wherein to refrain from activating or deactivating the MG and to measure the SSB without the MG, the instructions further cause the UE to:
measure the SSB with respect to a carrier frequency and subcarrier spacing (SCS) of the initial BWP during the intra-frequency measurement; and
transmit to or receive from the AN in the active BWP during the intra-frequency measurement.
7. The one or more non-transitory CRM of claim 1 , wherein, upon execution, the instructions further cause the UE to decode, upon reception of an MG configuration, the MG that is configured for the UE for the measurement of the SSB in the initial BWP.
8. The one or more non-transitory CRM of claim 1 , wherein the MG IE is an MG configuration (MeasGapConfig) IE or a BWP-Downlink IE.
9. The one or more non-transitory CRM of claim 1 , wherein the MG IE is to indicate one or more BWPs that are available for the activation of the MG based on the active BWP.
10. The one or more non-transitory CRM of claim 1 , wherein, upon execution, the instructions further cause the UE to determine the active BWP among a plurality of BWPs based on an MG configuration message from the AN.
11. The one or more non-transitory CRM of claim 10 , wherein the MG configuration message from the AN includes a downlink control information (DCI) to indicate the active BWP.
12. The one or more non-transitory CRM of claim 1 , wherein the MG IE is further to indicate one or more additional MGs for the UE, and upon execution, the instructions further cause the UE to activate the one or more additional MGs respectively.
13. The one or more non-transitory CRM of claim 12 , wherein, upon execution, the instructions further cause the UE to decode, upon reception of the MG IE, an MG identification (ID) or a bit string to indicate an activation or deactivation of the one or more additional MGs.
14. The one or more non-transitory CRM of claim 13 , wherein the MeasGapConfig IE or the BWP downlink IE further include one or more additional MGs that are configured to the UE.
15. One or more non-transitory, computer-readable media (CRM) comprising instructions to, upon execution of the instructions by one or more processors of an access node (AN), cause the AN to:
indicate to a user equipment (UE) that the UE is granted with a capability of determining activation of a measurement gap (MG) that has been configured;
generate an MG information element (IE) of MG configuration (MeasGapConfig IE) or a bandwidth part (BWP) downlink IE that configures a BWP that can be activated to become an active BWP and configures the MG in the active BWP, wherein the configured MG is to be activated in the active BWP for measurement of a synchronization signal block (SSB) in an initial BWP that is different from the active BWP, wherein the initial BWP contains the SSB used for measurement, and the initial BWP is configured for the UE to use for an initial access to a primary cell (PCell) or configured for the UE to operate at a secondary cell (SCell) activation; and
transmit the MG IE to a user equipment (UE) via radio resource control (RRC) signaling.
16. The one or more non-transitory CRM of claim 15 , wherein to transmit the MG IE, the instructions further cause the AN to:
generate a configuration message that includes the MG IE of BWP downlink information to indicate the active BWP for the UE; and
transmit the configuration message to the UE via downlink control information (DCI).
17. A user equipment (UE), comprising:
interface circuitry to:
decode a measurement gap (MG) information element (IE) of a downlink bandwidth part (BWP) (BWP-Downlink) that configures a BWP and configures an MG in the configured BWP; and
processing circuitry coupled with the interface circuitry, the processing circuitry configured to:
activate the configured BWP to become an active BWP;
activate the configured MG in the active BWP for measurement of a synchronization signal block (SSB) in an initial BWP that is different from the active BWP, wherein the initial BWP contains the SSB for measurement, and the initial BWP is configured for the UE to use for an initial access to a primary cell (PCell) or configured for the UE to operate at a secondary cell (SCell) activation; and
measure the SSB in the initial BWP during an intra-frequency measurement with the activated MG based on activating the configured MG.
18. The UE of claim 17 , wherein the processing circuitry is further to:
determine whether the active BWP is different from the initial BWP; and
activate the MG per BWP if the active BWP is different from the initial BWP.