# US 12,010,572 B2 · Method and apparatus for beam management for inter-cell mobility

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- Number: US 12,010,572 B2
- Document ID: US12010572B2
- Status: Granted
- Kind: B2
- Application number: 18/298,193
- Filed: 2023-04-10
- Published: 2023-09-28
- Granted: 2024-06-11
- Earliest claimed: 2019-11-18
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Md. Saifur Rahman; Eko Onggosanusi
- Web page: https://patentgrep.com/patent/US12010572B2

## CPC

- H04W 36/0094: {Definition of hand-off measurement parameters}
- H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection}
- H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping}
- H04B 7/088: {using beam selection}
- H04L 5/0023: {Time-frequency-space}
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0057: {Physical resource allocation for CQI}
- H04W 36/0058: {Transmission of hand-off measurement information, e.g. measurement reports}
- H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0058: {Allocation criteria}
- H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands}
- H04W 36/08: Reselecting an access point
- 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)

## Abstract

A method for operating a user equipment (UE) comprises receiving, from a serving cell, configuration information for measuring K resource reference signals (RSs) and reporting a beam report, measuring the K resource RSs, determining the beam report based on a metric, where the beam report includes an indicator indicating at least one of the K resource RSs, and transmitting the determined beam report, wherein 1≤K, wherein the K resource RSs comprises a first subset and a second subset, at least one resource RS in the first subset is transmitted from a serving cell in a set of serving cells and at least one resource RS in the second subset is transmitted from a non-serving cell in a set of non-serving cells.

## Claims

### Claim 1

A user equipment (UE) in a communication system, the UE comprising:
a processor; and
a transceiver operably coupled with the processor, the transceiver configured to:
receive a radio resource control (RRC) message including a plurality of transmission configuration indicator (TCI) states associated with an uplink transmission;
receive a media access control (MAC) control element (CE) including activation information associated with a set of TCI states from the plurality of TCI states;
receive downlink control information (DCI) including indication information associated with an indicated TCI state from the set of TCI states; and
transmit the uplink transmission based on the indicated TCI state,
wherein a first TCI state among the plurality of TCI states includes a cell-identifier (ID) that is not a serving cell-ID, and
wherein a second TCI state among the plurality of TCI states includes the serving cell-ID.

### Claim 2 (depends on 1)

The UE of claim 1, wherein the first TCI state among the plurality of TCI states further includes reference signal (RS) information, and
wherein the cell-ID indicates a physical cell ID for at least one RS associated with the RS information.

### Claim 3 (depends on 2)

The UE of claim 2, wherein the at least one RS is at least one synchronization signal block (SSB).

### Claim 4 (depends on 1)

The UE of claim 1, wherein the first or second TCI state among the plurality of TCI states further includes a plurality of quasi-co-location (QCL) parameters.

### Claim 5 (depends on 4)

The UE of claim 4, wherein a QCL-type of the plurality of QCL parameters is TypeD in the communication system supporting a 3rd generation partnership project (3GPP) new radio (NR).

### Claim 6

A method performed by a user equipment (UE) in a communication system, the method comprising:
receiving a radio resource control (RRC) message including a plurality of transmission configuration indicator (TCI) states associated with an uplink transmission;
receiving a media access control (MAC) control element, CE, including activation information associated with a set of TCI states from the plurality of TCI states;
receiving downlink control information (DCI) including indication information associated with an indicated TCI state from the set of TCI states; and
transmitting the uplink transmission based on the indicated TCI state,
wherein a first TCI state among the plurality of TCI states includes a cell-identifier (ID) that is not a serving cell-ID, and
wherein a second TCI state among the plurality of TCI states includes the serving cell-ID.

### Claim 7 (depends on 6)

The method of claim 6, wherein the first TCI state among the plurality of TCI states further includes reference signal (RS) information, and
wherein the cell-ID indicates a physical cell ID for at least one RS associated with the RS information.

### Claim 8 (depends on 7)

The method of claim 7, wherein the at least one RS is at least one synchronization signal block (SSB).

### Claim 9 (depends on 6)

The method of claim 6, wherein the first or second TCI state among the plurality of TCI states further includes a plurality of quasi-co-location (QCL) parameters.

### Claim 10 (depends on 9)

The method of claim 9, wherein a QCL-type of the plurality of QCL parameters is TypeD in the communication system supporting a 3rd generation partnership project (3GPP) new radio (NR).

### Claim 11

A base station in a communication system, the base station comprising:
a processor; and
a transceiver operably coupled with the processor, the transceiver configured to:
transmit a radio resource control (RRC) message including a plurality of transmission configuration indicator (TCI) states associated with an uplink transmission;
transmit a media access control (MAC) control element (CE) including activation information associated with a set of TCI states from the plurality of TCI states;
transmit downlink control information (DCI) including indication information associated with an indicated TCI state from the set of TCI states; and
receive the uplink transmission associated with the indicated TCI state,
wherein a first TCI state among the plurality of TCI states includes a cell-identifier (ID) that is not a serving cell-ID, and
wherein a second TCI state among the plurality of TCI states includes the serving cell-ID.

### Claim 12 (depends on 11)

The base station of claim 11, wherein the first TCI state among the plurality of TCI states further includes reference signal (RS) information, and
wherein the cell-ID indicates a physical cell ID for at least one RS associated with the RS information.

### Claim 13 (depends on 12)

The base station of claim 12, wherein the at least one RS is at least one synchronization signal block (SSB).

### Claim 14 (depends on 11)

The base station of claim 11, wherein the first or second TCI state among the plurality of TCI states further includes a plurality of quasi-co-location (QCL) parameters.

### Claim 15 (depends on 14)

The base station of claim 14, wherein a QCL-type of the plurality of QCL parameters is TypeD in the communication system supporting a 3rd generation partnership project (3GPP) new radio (NR).