# US 12,225,459 B2 · Multiple-input multiple-output capability information for power savings

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- Number: US 12,225,459 B2
- Document ID: US12225459B2
- Status: Granted
- Kind: B2
- Application number: 18/599,935
- Filed: 2024-03-08
- Published: 2024-10-24
- Granted: 2025-02-11
- Earliest claimed: 2019-08-28
- Assignees: Ofinno, LLC
- Applicants: Ofinno, LLC
- Inventors: Hua Zhou; Esmael Hejazi Dinan; Yunjung Yi; Ali Cagatay Cirik; Youngwoo Kwak; Hyukjin Chae
- Web page: https://patentgrep.com/patent/US12225459B2

## CPC

- H04W 52/0209: {in terminal devices}
- H04B 7/0413: MIMO systems
- H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 5/001: {the frequencies being arranged in component carriers}
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A wireless device transmits one or more maximum numbers of multiple-input multiple-output (MIMO) layers for reception of a physical downlink shared channel (PDSCH), of a cell, scheduled by downlink control information (DCI) from each transmit/receive point (TRP) of a plurality of TRPs of the cell. The wireless device receives one or more parameters indicating a first number of MIMO layers, for a first TRP of the plurality of TRPs of the cell, wherein the first number of MIMO layers is equal to or less than a first maximum number of MIMO layers, of the one or more maximum numbers of MIMO layers, corresponding to the first TRP. The wireless device receives one or more transport blocks with a second number of MIMO layers, wherein the second number is equal to or less than the first number.

## Claims

### Claim 1

A method comprising:
transmitting, by a wireless device to a base station, one or more first radio resource control (RRC) messages comprising wireless device capability information comprising one or more maximum numbers of multiple-input multiple-output (MIMO) layers for reception of a physical downlink shared channel (PDSCH), of a cell, scheduled by downlink control information (DCI) from each transmit/receive point (TRP) of a plurality of TRPs of the cell;
receiving, from the base station, one or more second RRC messages comprising one or more parameters indicating a first number of MIMO layers, for a first TRP of the plurality of TRPs of the cell, wherein the first number of MIMO layers is equal to or less than a first maximum number of MIMO layers, of the one or more maximum numbers of MIMO layers, corresponding to the first TRP; and
receiving, from the base station, one or more transport blocks with a second number of MIMO layers, wherein the second number is equal to or less than the first number.

### Claim 2 (depends on 1)

The method of claim 1, wherein:
the one or more transport blocks are scheduled by a first DCI via a control resource set associated with the first TRP; and
the control resource set associated with the first TRP is different from a second control resource set associated with a second TRP of the plurality of TRPs.

### Claim 3 (depends on 2)

The method of claim 2, wherein:
the wireless device receives the first DCI via the control resource set associated with the first TRP; and
the first DCI comprises a DCI field indicating the second number.

### Claim 4 (depends on 1)

The method of claim 1, wherein:
the one or more parameters further indicate a third number of MIMO layers, for a second TRP of the plurality of TRPs of the cell; and
the third number is equal to or less than a second maximum number of MIMO layers, of the one or more maximum numbers of MIMO layers, corresponding to the second TRP.

### Claim 5 (depends on 4)

The method of claim 4, wherein the third number is different from the first number.

### Claim 6 (depends on 4)

The method of claim 4, further comprising receiving one or more second transport blocks with a fourth number of MIMO layers, wherein the fourth number is equal to or less than the third number.

### Claim 7 (depends on 6)

The method of claim 6, wherein the one or more second transport blocks are scheduled by a second DCI via a control resource set associated with the second TRP.

### Claim 8

A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, causes the wireless device to:
transmit, to a base station, one or more first radio resource control (RRC) messages comprising wireless device capability information comprising one or more maximum numbers of multiple-input multiple-output (MIMO) layers for reception of a physical downlink shared channel (PDSCH), of a cell, scheduled by downlink control information (DCI) from each transmit/receive point (TRP) of a plurality of TRPs of the cell;
receive, from the base station, one or more second RRC messages comprising one or more parameters indicating a first number of MIMO layers, for a first TRP of the plurality of TRPs of the cell, wherein the first number of MIMO layers is equal to or less than a first maximum number of MIMO layers, of the one or more maximum numbers of MIMO layers, corresponding to the first TRP; and
receive, from the base station, one or more transport blocks with a second number of MIMO layers, wherein the second number is equal to or less than the first number.

### Claim 9 (depends on 8)

The wireless device of claim 8, wherein:
the one or more transport blocks are scheduled by a first DCI via a control resource set associated with the first TRP; and
the control resource set associated with the first TRP is different from a second control resource set associated with a second TRP of the plurality of TRPs.

### Claim 10 (depends on 9)

The wireless device of claim 9, wherein:
the wireless device receives the first DCI via the control resource set associated with the first TRP; and
the first DCI comprises a DCI field indicating the second number.

### Claim 11 (depends on 8)

The wireless device of claim 8, wherein:
the one or more parameters further indicate a third number of MIMO layers, for a second TRP of the plurality of TRPs of the cell; and
the third number is equal to or less than a second maximum number of MIMO layers, of the one or more maximum numbers of MIMO layers, corresponding to the second TRP.

### Claim 12 (depends on 11)

The wireless device of claim 11, wherein the third number is different from the first number.

### Claim 13 (depends on 11)

The wireless device of claim 11, wherein:
the instructions further cause the wireless device to receive one or more second transport blocks with a fourth number of MIMO layers; and
the fourth number is equal to or less than the third number.

### Claim 14 (depends on 13)

The wireless device of claim 13, wherein the one or more second transport blocks are scheduled by a second DCI via a control resource set associated with the second TRP.

### Claim 15

A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:
transmit, to a base station, one or more first radio resource control (RRC) messages comprising wireless device capability information comprising one or more maximum numbers of multiple-input multiple-output (MIMO) layers for reception of a physical downlink shared channel (PDSCH), of a cell, scheduled by downlink control information (DCI) from each transmit/receive point (TRP) of a plurality of TRPs of the cell;
receive, from the base station, one or more second RRC messages comprising one or more parameters indicating a first number of MIMO layers, for a first TRP of the plurality of TRPs of the cell, wherein the first number of MIMO layers is equal to or less than a first maximum number of MIMO layers, of the one or more maximum numbers of MIMO layers, corresponding to the first TRP; and
receive, from the base station, one or more transport blocks with a second number of MIMO layers, wherein the second number is equal to or less than the first number.

### Claim 16 (depends on 15)

The non-transitory computer-readable medium of claim 15, wherein:
the one or more transport blocks are scheduled by a first DCI via a control resource set associated with the first TRP; and
the control resource set associated with the first TRP is different from a second control resource set associated with a second TRP of the plurality of TRPs.

### Claim 17 (depends on 16)

The non-transitory computer-readable medium of claim 16, wherein:
the wireless device receives the first DCI via the control resource set associated with the first TRP; and
the first DCI comprises a DCI field indicating the second number.

### Claim 18 (depends on 15)

The non-transitory computer-readable medium of claim 15, wherein:
the one or more parameters further indicate a third number of MIMO layers, for a second TRP of the plurality of TRPs of the cell; and
the third number is equal to or less than a second maximum number of MIMO layers, of the one or more maximum numbers of MIMO layers, corresponding to the second TRP.

### Claim 19 (depends on 18)

The non-transitory computer-readable medium of claim 18, wherein the third number is different from the first number.

### Claim 20 (depends on 18)

The non-transitory computer-readable medium of claim 18, wherein:
the instructions further cause the wireless device to receive one or more second transport blocks with a fourth number of MIMO layers; and
the fourth number is equal to or less than the third number.