Granted Patent B2

US 12,659,964 · App. 18/279,262 · Granted Jun 16, 2026

Inventors: Guotong Wang (Beijing, CN); Alexei Davydov (Nizhny Novgorod, RU)

Assignee: Intel Corporation

H04W72/231H04B7/0626H04L5/0051H04W72/0446H04W72/1268

Abstract

Claims (48)

1 . An apparatus for a user equipment (UE) configured for operation in a fifth-generation (5G) new radio (NR) (5G-NR) system, the apparatus comprising: processing circuitry; and memory,

the processing circuitry configured to:

decode radio-resource control (RRC) signalling, the RRC signalling to configure the UE with a plurality of frequency-domain resource allocations for aperiodic sounding reference signal (SRS) transmission;

decode a downlink control information (DCI) format, the DCI format comprising one of DCI format 0_1 and DCI format 0_2; and

interpret one or more fields of the DCI format differently depending on whether the DCI format schedules a physical uplink shared channel (PUSCH) or the DCI format does not schedule a PUSCH and does not include a channel state information (CSI) request,

wherein when the DCI format does not schedule the PUSCH and does not include the CSI request, the processing circuitry is configured to:

interpret one or more fields of the DCI format for the aperiodic SRS transmission triggered by the DCI format, the one of more fields interpreted to indicate one of the frequency-domain resource allocations of the plurality, the one or more fields further interpreted to indicate a bandwidth part (BWP) identifier (ID) (BWP ID) indicating a BWP for the aperiodic SRS transmission;

configure the UE to transmit an SRS in the indicated BWP in accordance with the indicated frequency-domain resource allocation; and

switch to an indicated BWP for the aperiodic SRS transmission and to switch back to an active BWP after the aperiodic SRS transmission when the BWP ID indicates a BWP that is not the active BWP, and

wherein the memory is configured to store the DCI format.

2 . The apparatus of claim 1 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, the processing circuitry is to further interpret the one or more fields of the DCI format as further including an indicator of DL/UL BWP, the indicator of DL/UL BWP indicating whether a downlink (DL) BWP configuration or an uplink (UL) BWP configuration is to be used by the UE for the aperiodic SRS transmission.

3 . The apparatus of claim 2 , when the DL BWP configuration is indicated, the UE is configured to transmit the aperiodic SRS transmission following a DL BWP in accordance with the DL BWP configuration, and

when the UL BWP configuration is indicated, the UE is configured to transmit the aperiodic SRS transmission following an UL BWP in accordance with the UL BWP configuration.

4 . The apparatus of claim 3 , wherein when the DCI format schedules the PUSCH, the one or more fields of the DCI format are to be interpreted by the processing circuitry as scheduling information for the PUSCH.

5 . The apparatus of claim 4 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, and when the BWP ID indicates a BWP that is the active BWP for the UE, the processing circuitry is to configure the UE to refrain from switching BWPs for the aperiodic SRS transmission.

6 . The apparatus of claim 5 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, and wherein when the BWP ID indicates a BWP that is not the active BWP for the UE, the processing circuitry is configured to refrain from switching to the indicated BWP for the SRS transmission when a time offset between receipt of the DCI format and a first SRS transmission is less than a delay requirement by the UE for an uplink BWP change.

7 . The apparatus of claim 6 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, the processing circuitry is configured to interrupt a time-domain resource allocation (TDRA) field of the DCI format as indicating a time-domain resource allocation for the aperiodic SRS transmission.

8 . The apparatus of claim 7 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, the processing circuitry is configured to cause a medium-access control (MAC) layer of the UE to initiate a BWP inactivity timer for BWP switching.

9 . The apparatus of claim 5 , wherein when the DCI format includes a carrier indicator, and wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, the processing circuitry is configured to discard the carrier indicator.

10 . The apparatus of claim 1 , wherein when the DCI format includes a carrier indicator, and wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, the processing circuitry is configured to interpret the carrier indicator as triggering a cross-carrier SRS transmission in which the SRS is to be transmitted over a different carrier than a carrier carrying the DCI format.

11 . The apparatus of claim 1 , wherein when the DCI format includes a carrier indicator, and wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, the processing circuitry is configured to interpret the carrier indicator as bitmap triggering the aperiodic SRS transmission over multiple carriers.

12 . A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a user equipment (UE) configured for operation in a fifth-generation (5G) new radio (NR) (5G-NR) system, the instructions to configure the processing circuitry to:

decode radio-resource control (RRC) signalling, the RRC signalling to configure the UE with a plurality of frequency-domain resource allocations for aperiodic sounding reference signal (SRS) transmission;

decode a downlink control information (DCI) format, the DCI format comprising one of DCI format 0_1 and DCI format 0_2;

interpret one or more fields of the DCI format differently depending on whether the DCI format schedules a physical uplink shared channel (PUSCH) or the DCI format does not schedule a PUSCH and does not include a channel state information (CSI) request,

wherein when the DCI format does not schedule the PUSCH and does not include the CSI request, the processing circuitry is configured to:

interpret one or more fields of the DCI format for the aperiodic SRS transmission triggered by the DCI format, the one of more fields interpreted to indicate one of the frequency-domain resource allocations of the plurality, the one or more fields further interpreted to indicate a bandwidth part (BWP) identifier (ID) (BWP ID) indicating a BWP for the aperiodic SRS transmission;

configure the UE to transmit an SRS in the indicated BWP in accordance with the indicated frequency-domain resource allocation; and

switch to an indicated BWP for the aperiodic SRS transmission and to switch back to an active BWP after the aperiodic SRS transmission when the BWP ID indicates a BWP that is not the active BWP.

13 . The non-transitory computer-readable storage medium of claim 12 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, the processing circuitry is to further interpret the one or more fields of the DCI format as further including an indicator of DL/UL BWP, the indicator of DL/UL BWP indicating whether a downlink (DL) BWP configuration or an uplink (UL) BWP configuration is to be used by the UE for the aperiodic SRS transmission.

14 . The non-transitory computer-readable storage medium of claim 13 , when the DL BWP configuration is indicated, the UE is configured to transmit the aperiodic SRS transmission following a DL BWP in accordance with the DL BWP configuration, and

when the UL BWP configuration is indicated, the UE is configured to transmit the aperiodic SRS transmission following an UL BWP in accordance with the UL BWP configuration.

15 . The non-transitory computer-readable storage medium of claim 14 , wherein when the DCI format schedules the PUSCH, the one or more fields of the DCI format are to be interpreted by the processing circuitry as scheduling information for the PUSCH.

16 . The non-transitory computer-readable storage medium of claim 15 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, and when the BWP ID indicates a BWP that is the active BWP for the UE, the processing circuitry is to configure the UE to refrain from switching BWPs for the aperiodic SRS transmission.

17 . The non-transitory computer-readable storage medium of claim 16 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, and wherein when the BWP ID indicates a BWP that is not the active BWP for the UE, the processing circuitry is configured to refrain from switching to the indicated BWP for the SRS transmission when a time offset between receipt of the DCI format and a first SRS transmission is less than a delay requirement by the UE for an uplink BWP change.

18 . An apparatus for gNodeB (gNB) configured for operation in a fifth-generation (5G) new radio (NR) (5G-NR) system, the apparatus comprising: processing circuitry; and memory,

the processing circuitry configured to:

encode radio-resource control (RRC) signalling, the RRC signalling to configure a user equipment (UE) with a plurality of frequency-domain resource allocations for aperiodic sounding reference signal (SRS) transmission;

encode a downlink control information (DCI) format, the DCI format comprising one of DCI format 0_1 and DCI format 0_2 for transmission to the UE;

encode one or more fields of the DCI format to be interpreted differently depending on whether the DCI format schedules a physical uplink shared channel (PUSCH) or the DCI format does not schedule a PUSCH and does not include a channel state information (CSI) request

wherein when the DCI format does not schedule the PUSCH and does not include the CSI request, the processing circuitry is configured to:

encode one or more fields of the DCI format for interpretation by the UE for the aperiodic SRS transmission triggered by the DCI format, the one of more fields encoded to indicate one of the frequency-domain resource allocations of the plurality, the one or more fields further encoded to indicate a bandwidth part (BWP) identifier (ID) (BWP ID) indicating a BWP for the aperiodic SRS transmission; and

receive an SRS from the UE in the indicated BWP in accordance with the indicated frequency-domain resource allocation,

wherein when the DCI format does not schedule the PUSCH and does not include the CSI and when the BWP ID indicates a BWP that is not an active BWP for the UE, the one or more fields are encoded to be interpreted by the UE to cause the UE to switch to the indicated BWP for the aperiodic SRS transmission and to switch back to the active BWP after the aperiodic SRS transmission, and

wherein the memory is configured to store the DCI format.

19 . The apparatus of claim 18 , wherein when the DCI format does not schedule a PUSCH and does not include a CSI request, the processing circuitry is configured to encode the one or more fields of the DCI format as further including an indicator of DL/UL BWP, the indicator of DL/UL BWP indicating whether a downlink (DL) BWP configuration or an uplink (UL) BWP configuration is to be used by the UE for the aperiodic SRS transmission.

20 . The apparatus of claim 19 , when the DL BWP configuration is indicated, the processing circuitry of the gNB is configured to decode the aperiodic SRS transmission from the UE following a DL BWP in accordance with the DL BWP configuration, and

when the UL BWP configuration is indicated, the processing circuitry of the gNB is configured to decode the aperiodic SRS transmission from the UE following an UL BWP in accordance with the UL BWP configuration.

Priority Claims (2)

Continuity (1)

References Cited (15)