# US 12,407,464 B2 · Resource counting for reference signals

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- Number: US 12,407,464 B2
- Document ID: US12407464B2
- Status: Granted
- Kind: B2
- Application number: 18/655,617
- Filed: 2024-05-06
- Published: 2024-08-29
- Granted: 2025-09-02
- Earliest claimed: 2024-05-06
- Assignees: Apple Inc.
- Applicants: Apple Inc.
- Inventors: Haitong Sun; Gokhan Ozer; Yeong-Sun Hwang; Yushu Zhang; Wei Zeng; Dawei Zhang; Manasa Raghavan; Jie Cui; Weidong Yang; Amir Aminzadeh Gohari; Ghaith N. Hattab; Yang Tang; Ismael Gutierrez Gonzalez; Ziyang Ju
- Web page: https://patentgrep.com/patent/US12407464B2

## CPC

- 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)}
- H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]}
- H04B 7/0695: {using beam selection}
- H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 5/0026: {Division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]}
- H04L 27/261: {Details of reference signals}
- H04L 41/08: Configuration management of networks or network elements (address allocation H04L61/50)
- H04L 69/24: Negotiation of communication capabilities
- H04L 2025/03783: {Details of reference signals}
- H04W 28/16: Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

This disclosure relates to techniques for performing wireless communications including exchanging information related to capability of processing reference signals. A user equipment device may provide capability information to a network. The capability information may indicate a number of reference signal resources that the user equipment device can process in a slot or other defined period of time. The user equipment device and the network may share a common set of definitions, counting rules, and approaches for interpreting the capability information. The network may configure reference signals for the user equipment device.

## Claims

### Claim 1

A baseband processor configured to cause a user equipment (UE) to:
determine:
a first number of reference signal resources that the UE supports during an amount of time for one or more of new beam identification or path loss measurement;
whether the UE supports 2 port channel state information reference signal (CSI-RS) for the new beam identification with the first number of reference signal resources; and
whether the UE supports multi-port CSI-RS processing for the path loss measurement with the first number of reference signal resources;
transmit, to a base station:
an indication of the first number of reference signal resources;
an indication of the support of 2 port CSI-RS for the new beam identification; and
an indication of the support of multi-port CSI-RS for the path loss measurement;
receive, from the base station, a 2 port CSI-RS; and
perform one or more of the new beam identification or path loss measurement based on the 2 port CSI-RS.

### Claim 2 (depends on 1)

The baseband processor of claim 1, wherein the amount of time comprises a slot.

### Claim 3 (depends on 1)

The baseband processor of claim 1, wherein the reference signal resources comprise CSI-RS resources.

### Claim 4 (depends on 1)

The baseband processor of claim 1, wherein the first number of reference signal resources are for beam measurement that includes beam failure detection.

### Claim 5 (depends on 1)

The baseband processor of claim 1, wherein the first number of reference signal resources are for beam measurement that includes radio link monitoring.

### Claim 6 (depends on 1)

The baseband processor of claim 1, wherein the first number of reference signal resources are for beam measurement that includes one or more of:
Layer 1 RSRP (L1-RSRP) measurement; or
Layer 1 SINR (L1-SINR) measurement.

### Claim 7 (depends on 1)

The baseband processor of claim 1, wherein determining the first number of reference signal resource includes resource counting, wherein resource counting is the same for the path loss measurement, new beam identification, and Layer 1 RSRP (L1-RSRP) measurement.

### Claim 8

A method, comprising:
determining:
a first number of reference signal resources that a user equipment (UE) supports during an amount of time for one or more of new beam identification or path loss measurement;
whether the UE supports 2 port channel state information reference signal (CSI-RS) for the new beam identification with the first number of reference signal resources; and
whether the UE supports multi-port CSI-RS processing for the path loss measurement with the first number of reference signal resources;
transmitting, to a base station:
an indication of the first number of reference signal resources;
an indication of the support of 2 port CSI-RS for the new beam identification; and
an indication of the support of multi-port CSI-RS for the path loss measurement;
receiving, from the base station, a 2 port CSI-RS; and
performing one or more of the new beam identification or path loss measurement based on the 2 port CSI-RS.

### Claim 9 (depends on 8)

The method of claim 8, further comprising:
transmitting a report of the one or more of the new beam identification or path loss measurement to the base station.

### Claim 10 (depends on 8)

The method of claim 8, wherein the reference signal resources comprise CSI-RS resources.

### Claim 11 (depends on 8)

The method of claim 8, wherein the first number of reference signal resources are for beam measurement that includes beam failure detection.

### Claim 12 (depends on 8)

The method of claim 8, wherein the first number of reference signal resources are for beam measurement that includes radio link monitoring.

### Claim 13 (depends on 8)

The method of claim 8, wherein the first number of reference signal resources are for beam measurement that includes one or more of:
Layer 1 RSRP (L1-RSRP) measurement; or
Layer 1 SINR (L1-SINR) measurement.

### Claim 14

A method, comprising:
receiving, from a user equipment (UE):
an indication of a first number of reference signal resources that the UE supports during an amount of time for one or more of new beam identification or path loss measurement;
an indication of whether the UE supports 2 port channel state information reference signal (CSI-RS) for the new beam identification with the first number of reference signal resources; and
an indication of whether the UE supports multi-port CSI-RS processing for the path loss measurement with the first number of reference signal resources; and
transmitting, to the UE, a 2 port CSI-RS, wherein the 2 port CSI-RS is useable for performing the one or more of the new beam identification or path loss measurement.

### Claim 15 (depends on 14)

The method of claim 14, wherein the amount of time comprises a slot.

### Claim 16 (depends on 14)

The method of claim 14, wherein the reference signal resources comprise CSI-RS resources.

### Claim 17 (depends on 14)

The method of claim 14, wherein the first number of reference signal resources are for beam measurement that includes beam failure detection.

### Claim 18 (depends on 14)

The method of claim 14, further comprising:
receiving, from the UE, an indication of a result of the one or more of the new beam identification or path loss measurement.

### Claim 19 (depends on 1)

The baseband processor of claim 1, wherein the indication of the support of 2 port CSI-RS for the new beam identification comprises a capability.

### Claim 20 (depends on 1)

The baseband processor of claim 1, wherein the indication of the support of multi-port CSI-RS for the path loss measurement comprises a capability.