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US 12,592,757 B2Granted
Method for determining channel state information, terminal device, and network device
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorWenhong Chen
Life of this patent
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Abstract
A method for determining channel state information (CSI) includes the following. A terminal device determines, according to whether a non-zero power (NZP) channel state information-reference signal (CSI-RS) resource is available for CSI measurements under different measurement assumptions, the number of bits of a CSI-RS resource indicator (CRI) in CSI and/or NZP CSI-RS resources respectively indicated by different values of the CRI in the CSI.
Claims20
A method for determining channel state information (CSI), comprising:
- determining, by a terminal device, a number of bits of a CSI-reference signal (CSI-RS) resource indicator (CRI) in CSI and non-zero power (NZP) CSI-RS resources respectively indicated by different values of the CRI in the CSI, according to whether an NZP CSI-RS resource is available for CSI measurements under different measurement assumptions;
- wherein determining the number of the bits of the CRI in the CSI comprises:
- determining that the number of the bits of the CRI is log2(K+N) when the NZP CSI-RS resource is available for the CSI measurements under the different measurement hypotheses;
- and
- determining that the number of the bits of the CRI is log2(K−N) when the NZP CSI-RS resource is unavailable for the CSI measurements under the different measurement hypotheses;
- wherein K represents the number of NZP CSI-RS resources in an NZP CSI-RS resource set for channel measurements, and N represents the number of channel measurement resource (CMR) pairs for a CSI measurement under a measurement hypothesis of non-coherent joint transmission (NC-JT) in the NZP CSI-RS resource set for channel measurements.
3 more elements
A terminal device, comprising:
- a transceiver;
- a processor coupled to the transceiver;
- and
- a memory configured to store a computer program;
- wherein the processor being configured to execute the computer program to cause the terminal device to:
- determine, according to whether a non-zero power (NZP) channel state information-reference signal (CSI-RS) resource is available for CSI measurements under different measurement assumptions, the number of bits of a CSI-RS resource indicator (CRI) in CSI and NZP CSI-RS resources respectively indicated by different values of the CRI in the CSI;
- wherein the processor configured to execute the computer program to cause the terminal device to determine the number of the bits of the CRI in the CSI is configured to execute the computer program to cause the terminal device to:
- determine that the number of the bits of the CRI is log2(K+N) when the NZP CSI-RS resource is available for the CSI measurements under the different measurement assumptions;
- and
- determine that the number of the bits of the CRI is log2(K−N) when the NZP CSI-RS resource is unavailable for the CSI measurements under the different measurement assumptions;
- wherein K represents the number of NZP CSI-RS resources in an NZP CSI-RS resource set for channel measurements, and N represents the number of channel measurement resource (CMR) pairs for a CSI measurement under a measurement assumption of non-coherent joint transmission (NC-JT) in the NZP CSI-RS resource set for channel measurements.
8 more elements
A network device comprising:
- a transceiver;
- a processor coupled to the transceiver;
- and
- a memory configured to store a computer program;
- wherein the processor is configured to execute the computer program to cause the network device to:
- determine, according to whether a non-zero power (NZP) channel state information-reference signal (CSI-RS) resource is available for CSI measurements under different measurement assumptions, the number of bits of a CSI-RS resource indicator (CRI) in CSI and NZP CSI-RS resources respectively indicated by different values of the CRI in the CSI;
- wherein the processor configured to execute the computer program to cause the network device to determine the number of the bits of the CRI in the CSI is configured to execute the computer program to cause the network device to:
- determine that the number of the bits of the CRI is log2(K+N) when the NZP CSI-RS resource is available for the CSI measurements under the different measurement assumptions;
- and
- determine that the number of the bits of the CRI is log2(K−N) when the NZP CSI-RS resource is unavailable for the CSI measurements under the different measurement assumptions;
- wherein K represents the number of NZP CSI-RS resources in an NZP CSI-RS resource set for channel measurements, and N represents the number of channel measurement resource (CMR) pairs for a CSI measurement under a measurement assumption of non-coherent joint transmission (NC-JT) in the NZP CSI-RS resource set for channel measurements.
8 more elements
Dependencies are inferred from the claim text.