# US 2019/0174466 A1 · Control signaling for uplink multiple input multiple output, channel state information reference signal configuration and sounding reference signal configuration

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- Number: US 2019/0174466 A1
- Document ID: US20190174466A1
- Status: Published application
- Kind: A1
- Application number: 16/252,294
- Filed: 2019-01-18
- Published: 2019-06-06
- Earliest claimed: 2018-01-22
- Assignees: Intel Corporation
- Applicants: Intel Corporation
- Inventors: Yushu ZHANG; Alexei DAVYDOV; Guotong WANG; Gang XIONG; Hong HE
- Web page: https://patentgrep.com/patent/US20190174466A1

## CPC

- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04L 5/0057: {Physical resource allocation for CQI}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Systems, apparatuses, methods, and computer-readable media are provided for time domain resource allocations in wireless communications systems. Disclosed embodiments include time-domain symbol determination and/or indication using a combination of higher layer and downlink control information signaling for physical downlink shared channel and physical uplink shared channel; time domain resource allocations for mini-slot operations; rules for postponing and dropping for multiple mini-slot transmission; and collision handling of sounding reference signals with semi-statically or semi-persistently configured uplink transmissions. Other embodiments may be described and/or claimed.

## Claims

### Claim 1

One or more computer-readable storage media (CRSM) comprising instructions, wherein execution of the instructions by one or more processors of a user equipment (UE) is to cause the UE to:
when the UE is configured with at least one sounding reference signal (SRS) resource for a configured transmission scheme via a higher layer parameter and the at least one configured SRS resource is indicated by a received downlink control information (DCI) or Radio Resource Control (RRC) message, control transmission of an SRS in the at least one configured SRS resource; and
when the UE is not configured with at least one SRS resource, control transmission of a physical uplink shared channel (PUSCH) scheduled by a DCI in a corresponding physical uplink control channel (PUCCH) resource with a lowest resource identifier (ID) within an active uplink (UL) bandwidth part (BWP).

### Claim 2 (depends on 1)

The one or more CRSM of claim 1, wherein the PUSCH is a codebook based transmission or a non-codebook based transmission.

### Claim 3 (depends on 1)

The one or more CRSM of claim 1, wherein a DCI format of the received DCI is DCI format 0_0 when the UE is not configured with at least one SRS resource, and the DCI format of the received DCI is DCI format 0_1 or DCI format 1_1 when the UE is configured with at least one SRS resource.

### Claim 4 (depends on 3)

The one or more CRSM of claim 3, when the DCI is the DCI format 0_0, execution of the instructions is to cause the UE to:
control transmission of the PUSCH in the corresponding PUCCH resource with the lowest resource ID within the active UL BWP.

### Claim 5 (depends on 1)

The one or more CRSM of claim 1, wherein execution of the instructions is to cause the UE to:
control receipt of a radio resource control (RRC) message, the RRC message to include an SRS configuration (SRS-Config), the SRS-Config to include one or more sounding reference signal resource sets (SRS-ResourceSets), each SRS-ResourceSet of the one or more SRS-ResourceSets to indicate one or more SRS resources, and the one or more SRS resources of each SRS-ResourceSet are configured to be used for one of periodic SRS transmissions, semi-persistent SRS transmissions, or aperiodic SRS transmissions.

### Claim 6 (depends on 5)

The one or more CRSM of claim 5, wherein at least one SRS-ResourceSet of the one or more SRS-ResourceSets includes the at least one configured SRS resource.

### Claim 7 (depends on 6)

The one or more CRSM of claim 6, wherein the at least one configured SRS resource is configured to be used for aperiodic SRS transmissions, and the received DCI includes an SRS request field indicating the at least one configured SRS resource to trigger transmission of the aperiodic SRS, wherein only one SRS resource within the SRS-ResourceSet configuration can be triggered.

### Claim 8 (depends on 5)

The one or more CRSM of claim 5, wherein at least one SRS-ResourceSet of the one or more SRS-ResourceSets includes one or more SRS resources configured to be used for semi-persistent SRS transmissions, and execution of the instructions is to cause the UE to:
use a same spatial domain filter to transmit the PUSCH as the at least one configured SRS resource indicated by the received DCI when the at least one configured SRS resource indicated by the received DCI is among the one or more SRS resources configured to be used for semi-persistent SRS transmissions.

### Claim 9 (depends on 5)

The one or more CRSM of claim 5, wherein the SRS-Config is to include a spatial relation (spatialRelationInfo) configuration to indicate a spatial relation between a reference RS and a target SRS, at least one SRS-ResourceSet of the one or more SRS-ResourceSets includes one or more SRS resources configured to be used for semi-persistent SRS transmissions, and execution of the instructions is to cause the UE to:
use a same spatial domain filter to transmit the PUSCH as the at least one configured SRS resource indicated by the spatialRelationInfo configuration when the at least one configured SRS resource is among the one or more SRS resources configured to be used for semi-persistent SRS transmissions, and the at least one configured SRS resource is not indicated by the received DCI.

### Claim 10 (depends on 5)

The one or more CRSM of claim 5, wherein the RRC message is to include a non-zero power channel state information reference signal resource set (NZP-CSI-RS-ResourceSet), and the NZP-CSI-RS-ResourceSet is to indicate one or more non-zero power channel state information reference signal (NZP CSI-RS) resources, and execution of the instructions is to cause the UE to:
assume same antenna ports are to be used for the NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet having a same port index when the NZP-CSI-RS-ResourceSet includes a trs-Info parameter set to ‘on’; and
assume that the NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet are to be transmitted with a same downlink spatial domain transmission filter when the NZP-CSI-RS-ResourceSet includes a repetition parameter set to ‘on’,
wherein only one of the trs-Info or the repetition can be configured by the NZP-CSI-RS-ResourceSet.

### Claim 11 (depends on 10)

The one or more CRSM of claim 10, wherein the NZP-CSI-RS-ResourceSet is to include a QCL-Info-PeriodicCSI-RS parameter to indicate a transmission beam for individual ones of the one or more NZP CSI-RS resources.

### Claim 12

A System-on-Chip (SoC) to be implemented in a user equipment (UE), the SoC comprising:
interface circuitry arranged to obtain a radio resource control (RRC) message that includes a non-zero power channel state information reference signal resource set (NZP-CSI-RS-ResourceSet), the NZP-CSI-RS-ResourceSet to indicate one or more non-zero power channel state information reference signal (NZP CSI-RS) resources; and
baseband circuitry coupled with the interface circuitry, the baseband circuitry arranged to:
assume same antenna ports are to be used for the NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet having a same port index when the NZP-CSI-RS-ResourceSet includes a trs-Info parameter set to ‘on’; and
assume that the NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet are to be transmitted with a same downlink spatial domain transmission filter when the NZP-CSI-RS-ResourceSet includes a repetition parameter set to ‘on’,
wherein only one of the trs-Info or the repetition can be configured by the NZP-CSI-RS-ResourceSet.

### Claim 13 (depends on 12)

The SoC of claim 12, wherein the NZP-CSI-RS-ResourceSet is to include a QCL-Info-PeriodicCSI-RS parameter to indicate a transmission beam for individual ones of the one or more NZP CSI-RS resources.

### Claim 14 (depends on 12)

The SoC of claim 12, wherein the baseband circuitry is arranged to:
control transmission of a sounding reference signal (SRS) in at least one configured SRS resource when the at least one configured SRS resource is indicated by an SRS resource indicator field of a downlink control information (DCI) and the UE is configured with at least one SRS resource for a configured transmission scheme via a higher layer parameter in the RRC message; and
control transmission of a physical uplink shared channel (PUSCH) scheduled by the DCI in a corresponding physical uplink control channel (PUCCH) resource with a lowest resource identifier (ID) within an active uplink (UL) bandwidth part (BWP) when the UE is not configured with the at least one SRS resource indicated by the SRS resource indicator field of the DCI.

### Claim 15 (depends on 14)

The SoC of claim 14, wherein the configured transmission scheme is a codebook based transmission scheme or a non-codebook based transmission scheme, and the PUSCH is a codebook based transmission or a non-codebook based transmission.

### Claim 16 (depends on 14)

The SoC of claim 14, wherein a DCI format of the received DCI is DCI format 0_0, and the baseband circuitry is arranged to:
control transmission of the PUSCH in the corresponding PUCCH resource with the lowest resource ID within the active UL BWP.

### Claim 17 (depends on 14)

The SoC of claim 14, wherein a DCI format of the received DCI is DCI format 0_1 or DCI format 1_1 that includes an SRS request field, and the baseband circuitry is arranged to:
control transmission of an SRS in a configured SRS resource based on measurement of an associated NZP CSI-RS to be transmitted in the NZP CSI-RS resources when the configured SRS resource is indicated by the SRS request field of the DCI, the UE is configured with the SRS resource for a non-codebook based transmission scheme, and the configured SRS resource is among an aperiodic SRS resource set.

### Claim 18 (depends on 14)

The SoC of claim 14, wherein the RRC message is to include an SRS configuration (SRS-Config), the SRS-Config to include one or more sounding reference signal resource sets (SRS-ResourceSets), each SRS-ResourceSet of the one or more SRS-ResourceSets to indicate one or more SRS resources, and the one or more SRS resources of each SRS-ResourceSet are configured to be used for one of periodic SRS transmissions, semi-persistent SRS transmissions, or aperiodic SRS transmissions.

### Claim 19 (depends on 18)

The SoC of claim 18, wherein at least one SRS-ResourceSet of the one or more SRS-ResourceSets includes one or more SRS resources configured to be used for semi-persistent SRS transmissions, and the baseband circuitry is arranged to:
use a same spatial domain filter to transmit the PUSCH as the at least one configured SRS resource indicated by the received DCI when the at least one configured SRS resource indicated by the received DCI is among the one or more SRS resources configured to be used for semi-persistent SRS transmissions.

### Claim 20 (depends on 18)

The SoC of claim 18, wherein the SRS-Config is to include a spatial relation (spatialRelationInfo) configuration to indicate a spatial relation between a reference RS and a target SRS, at least one SRS-ResourceSet of the one or more SRS-ResourceSets includes one or more SRS resources configured to be used for semi-persistent SRS transmissions, and the baseband circuitry is arranged to:
use a same spatial domain filter to transmit the PUSCH as the at least one configured SRS resource indicated by the spatialRelationInfo configuration when the at least one configured SRS resource is among the one or more SRS resources configured to be used for semi-persistent SRS transmissions, and the at least one configured SRS resource is not indicated by the received DCI.

### Claim 21

An apparatus to operate as a next generation evolved NodeB (ng-eNB), the apparatus comprising:
processor circuitry arranged to:
generate a radio resource control (RRC) message to configure a user equipment (UE) with a sounding reference signal resource set (SRS-ResourceSet),
generate a first downlink control information (DCI) to indicate an SRS resource (SRS-Resource) in the configured SRS-ResourceSet, the first DCI to trigger the UE to transmit an SRS in the indicated SRS-Resource, and
generate a second DCI to not indicate an SRS resource in the configured SRS-ResourceSet, the second DCI to trigger the UE to transmit a physical uplink shared channel (PUSCH) scheduled by a DCI in a corresponding physical uplink control channel (PUCCH) resource with a lowest resource identifier (ID) within an active uplink (UL) bandwidth part (BWP); and
communication circuitry communicatively coupled with the processor circuitry, the communication circuitry arranged to transmit the RRC message to the UE, and transmit the first DCI or the second DCI to the UE.

### Claim 22 (depends on 21)

The apparatus of claim 21, wherein the processor circuitry is arranged to set a usage of the SRS-ResourceSet to “Codebook”, and generate the first DCI to indicate the SRS-Resource in an SRS request field of the first DCI.

### Claim 23 (depends on 21)

The apparatus of claim 21, wherein the processor circuitry is arranged to set a usage of the SRS-ResourceSet to “nonCodebook”, and generate the second DCI to indicate the SRS-Resource in an SRS resource indicator field of the second DCI.

### Claim 24 (depends on 21)

The apparatus of claim 21, wherein a DCI format of the second DCI is DCI format 0_0, and the DCI format of the first DCI is DCI format 0_1 or DCI format 1_1.

### Claim 25 (depends on 21)

The apparatus of claim 21, wherein the processor circuitry is arranged to:
generate the RRC message to include an SRS configuration (SRS-Config) and an a non-zero power channel state information reference signal resource set (NZP-CSI-RS-ResourceSet),
wherein the SRS-Config is to include the SRS-ResourceSet, and SRS-Resources of the SRS-ResourceSet are configured to be used for one of periodic SRS transmissions, semi-persistent SRS transmissions, or aperiodic SRS transmissions,
wherein the NZP-CSI-RS-ResourceSet is to indicate one or more non-zero power channel state information reference signal (NZP CSI-RS) resources,
wherein same antenna ports are to be used for the NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet having a same port index when the NZP-CSI-RS-ResourceSet includes a trs-Info parameter set to ‘on’,
wherein the NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet are to be transmitted with a same downlink spatial domain transmission filter when the NZP-CSI-RS-ResourceSet includes a repetition parameter set to ‘on’, and
wherein only one of the trs-Info or the repetition can be configured by the NZP-CSI-RS-ResourceSet.
