# US 2021/0345148 A1 · Channel state information (csi) measurement and report outside active downlink (dl) bandwidth part (bwp)

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- Number: US 2021/0345148 A1
- Document ID: US20210345148A1
- Status: Published application
- Kind: A1
- Application number: 17/302,235
- Filed: 2021-04-27
- Published: 2021-11-04
- Earliest claimed: 2020-05-01
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Qiongjie Lin; Aristides Papasakellariou; Carmela Cozzo
- Web page: https://patentgrep.com/patent/US20210345148A1

## CPC

- H04L 5/0057: {Physical resource allocation for CQI}
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0092: {Indication of how the channel is divided}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/1268: of uplink data flows
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Apparatuses and methods for channel state information (CSI) measurement and report outside an active downlink (DL) bandwidth part (BWP). A method for a user equipment includes receiving configurations for a first set of DL BWPs, for reference signal (RS) resource sets in a second set of DL BWPs, and for CSI reports corresponding to the second set of DL BWPs; receiving RS resources from the RS resource sets in a third set of DL BWPs; and determining a first number of CSI reports based on the received RS resources. The method further includes determining a second number of CSI reports that have (i) values for a CSI report quantity that are larger those in other CSI reports from the first number of CSI reports and (ii) corresponding DL BWP indexes and transmitting a channel that includes the second number of CSI reports and the indexes.

## Claims

### Claim 1

A user equipment (UE) comprising:
a transceiver configured to receive:
a first configuration for a first set of downlink (DL) bandwidth parts (BWPs), wherein each DL BWP in the first set of DL BWPs has an index,
a second configuration for reference signal (RS) resource sets in a second set of DL BWPs that is a subset of the first set of DL BWPs,
a third configuration for channel state information (CSI) reports corresponding to the second set of DL BWPs, and
RS resources from the RS resource sets in a third set of DL BWPs that is a subset of the second set of DL BWPs; and
a processor operably connected to the transceiver, the processor configured to determine:
a first number of CSI reports based on the received RS resources, and
a second number of CSI reports, from the first number of CSI reports, that have (i) values for a CSI report quantity that are larger than values for the CSI report quantity in other CSI reports from the first number of CSI reports and (ii) corresponding DL BWP indexes,
wherein the transceiver is further configured to transmit a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) that includes the second number of CSI reports of the values of the CSI report quantity and information indicating the corresponding DL BWP indexes.

### Claim 2 (depends on 1)

The UE of claim 1, wherein the transceiver is further configured to receive a configuration for the second number.

### Claim 3 (depends on 1)

The UE of claim 1, wherein the CSI report quantity is one of:
a channel quality indicator (CQI),
a reference signal received power (RSRP), or
a signal-to-interference and noise ratio (SINR).

### Claim 4 (depends on 1)

The UE of claim 1, wherein:
the processor is further configured to determine a time duration for reception of the RS resources; and
the transceiver is further configured to:
skip receptions of physical downlink control channels (PDCCHs) or of physical downlink shared channels (PDSCHs) in the first set of DL BWPs during the time duration, and
receive PDCCHs or PDSCHs in an active DL BWP after the time duration, wherein the active DL BWP is one of:
a DL BWP from the first set of DL BWPs, wherein the DL BWP is a last DL BWP where the transceiver is configured to receive PDCCH or PDSCH before the time duration, or
a DL BWP from the third set of DL BWPs that has a largest value for the CSI report quantity.

### Claim 5 (depends on 1)

The UE of claim 1, wherein:
the second configuration further includes at least one of the following parameters:
a periodicity of a measurement gap (MG) denoted as T_MG,
a time offset of the MG with a value from 0 to T_MG−1, and
a time duration of the MG;
the processor is further configured to determine the MG based on the one or more included parameters; and
the transceiver is further configured to receive the RS resources during the MG.

### Claim 6 (depends on 1)

The UE of claim 1, wherein:
the transceiver is further configured to receive a physical downlink control channel (PDCCH) that provides a downlink control information (DCI) format, and
the DCI format includes a CSI request field with a value that indicates at least one of:
the third set of DL BWPs,
a start time and a time duration for reception of the RS resources,
the RS resources, and
scheduling information for the PUSCH or the PUCCH transmission.

### Claim 7 (depends on 1)

The UE of claim 1, wherein the transceiver is further configured to receive:
a physical downlink shared channel (PDSCH) that provides the second configuration, wherein the PDSCH is scheduled by a first downlink control information (DCI) format with cyclic redundancy check (CRC) bits scrambled by a system information radio network temporary identifier (SI-RNTI); and
a physical downlink control channel (PDCCH) according to a common search space that provides a second DCI format, wherein the second DCI format includes a field with a value that indicates the RS resources.

### Claim 8

A base station (BS) comprising:
a processor; and
a transceiver operably connected to the processor, the transceiver configured to:
transmit a first configuration for a first set of downlink (DL) bandwidth parts (BWPs), wherein each DL BWP in the first set of DL BWPs has an index;
transmit a second configuration for reference signal (RS) resource sets in a second set of DL BWPs that is a subset of the first set of DL BWPs;
transmit a third configuration for channel state information (CSI) reports corresponding to the second set of DL BWPs;
transmit RS resources from the RS resource sets in a third set of DL BWPs that is a subset of the second set of DL BWPs; and
receive a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) that includes a number of CSI reports and information indicating corresponding DL BWPs indexes.

### Claim 9 (depends on 8)

The base station of claim 8, wherein the transceiver is further configured to transmit a configuration for the number.

### Claim 10 (depends on 8)

The base station of claim 8, further comprising:
a processor configured to determine a time duration for transmission of the RS resources; and
the transceiver is further configured to:
skip transmission of physical downlink control channels (PDCCHs) or of physical downlink shared channels (PDSCHs) in the first set of DL BWPs during the time duration, and
transmit PDCCHs or PDSCHs in an active DL BWP after the time duration, wherein the active DL BWP is one of:
a DL BWP from the first set of DL BWPs, wherein the DL BWP is a last DL BWP where the transceiver is configured to transmit PDCCH or PDSCH before the time duration, or
a DL BWP with an index corresponding to a largest value of a CSI report quantity.

### Claim 11 (depends on 10)

The base station of claim 10, wherein the CSI report quantity is one of:
a channel quality indicator (CQI),
a reference signal received power (RSRP), or
a signal-to-interference and noise ratio (SINR).

### Claim 12 (depends on 8)

The base station of claim 8, wherein:
the second configuration further includes at least one of the following parameters:
a periodicity of a measurement gap (MG) denoted as T_MG,
a time offset of the MG with a value from 0 to T_MG−1, and
a time duration of the MG;
the processor is further configured to determine the MG based on the one or more included parameters; and
the transceiver is further configured to transmit the RS resources during the MG.

### Claim 13 (depends on 8)

The base station of claim 8, wherein:
the transceiver is further configured to transmit a physical downlink control channel (PDCCH) that provides a downlink control information (DCI) format, and
the DCI format includes a CSI request field with a value that indicates at least one of:
the third set of DL BWPs,
a start time and a time duration for transmission of the RS resources,
the RS resources, and
scheduling information for transmission of the PUSCH or the PUCCH.

### Claim 14 (depends on 8)

The base station of claim 8, wherein the transceiver is further configured to transmit:
a physical downlink shared channel (PDSCH) that provides the second configuration, wherein the PDSCH is scheduled by a first downlink control information (DCI) format with cyclic redundancy check (CRC) bits scrambled by a system information radio network temporary identifier (SI-RNTI); and
a physical downlink control channel (PDCCH) according to a common search space that provides a second DCI format, wherein the second DCI format includes a field with a value that indicates the RS resources.

### Claim 15

A method comprising:
receiving a first configuration for a first set of downlink (DL) bandwidth parts (BWPs), wherein each DL BWP in the first set of DL BWPs has an index;
receiving a second configuration for reference signal (RS) resource sets in a second set of DL BWPs that is a subset of the first set of DL BWPs;
receiving a third configuration for channel state information (CSI) reports corresponding to the second set of DL BWPs;
receiving RS resources from the RS resource sets in a third set of DL BWPs that is a subset of the second set of DL BWPs;
determining a first number of CSI reports based on the received RS resources;
determining a second number of CSI reports, from the first number of CSI reports, that have (i) values for a CSI report quantity that are larger than values for the CSI report quantity in other CSI reports from the first number of CSI reports and (ii) corresponding DL BWP indexes; and
transmitting a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) that includes the second number of CSI reports of the values for the CSI report quantity and information indicating the corresponding DL BWP indexes.

### Claim 16 (depends on 15)

The method of claim 15, further comprising:
receiving a configuration for the second number; and
determining the CSI report quantity is one of:
a channel quality indicator (CQI),
a reference signal received power (RSRP), or
a signal-to-interference and noise ratio (SINR).

### Claim 17 (depends on 15)

The method of claim 15, further comprising:
determining a time duration for reception of the RS resources;
skipping receptions of physical downlink control channel (PDCCHs) or of physical downlink shared channels (PDSCHs) in the first set of DL BWPs during the time duration; and
receiving PDCCHs or PDSCHs in an active DL BWP after the time duration, wherein the active DL BWP is one of:
a DL BWP from the first set of DL BWPs, wherein the DL BWP is a last DL BWP where PDCCH or PDSCH reception is before the time duration, or
a DL BWP from the third set of DL BWPs that has a largest value for the CSI report quantity.

### Claim 18 (depends on 15)

The method of claim 15, further comprising:
determining the second configuration to further include at least one of the following parameters:
a periodicity of a measurement gap (MG) denoted as T_MG,
a time offset of the MG with a value from 0 to T_MG−1, and
a time duration of the MG;
determining the MG based on the one or more included parameters; and
receiving the RS resources during the MG.

### Claim 19 (depends on 15)

The method of claim 15, further comprising:
receiving a physical downlink control channel (PDCCH) that provides a downlink control information (DCI) format,
wherein the DCI format includes a CSI request field with a value that indicates at least one of:
the third set of DL BWPs,
a start time and a time duration for reception of the RS resources,
the RS resources, and
scheduling information for the PUSCH or the PUCCH transmission.

### Claim 20 (depends on 15)

The method of claim 15, further comprising:
receiving a physical downlink shared channel (PDSCH) that provides the second configuration, wherein the PDSCH is scheduled by a first downlink control information (DCI) format with cyclic redundancy check (CRC) bits scrambled by a system information radio network temporary identifier (SI-RNTI); and
receiving a physical downlink control channel (PDCCH) according to a common search space that provides a second DCI format, wherein the second DCI format includes a field with a value that indicates the RS resources.