# US 12,604,357 B2 · User equipment configuration determination

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- Number: US 12,604,357 B2
- Document ID: US12604357B2
- Status: Granted
- Kind: B2
- Application number: 18/034,436
- Filed: 2021-03-11
- Published: 2023-12-07
- Granted: 2026-04-14
- Earliest claimed: 2020-10-30
- Assignees: Telefonaktiebolaget LM Ericsson (publ)
- Applicants: Telefonaktiebolaget LM Ericsson (publ)
- Inventors: Henning Wiemann; Linnea Faxén; Fredrik Ovesjö; Tao Cui; Marwa Mamoun Abdelgadir Abdelrahman; Joakim Hellsten; Edward Carlstedt-Duke
- Web page: https://patentgrep.com/patent/US12604357B2

## CPC

- H04W 76/20: Manipulation of established connections
- H04W 8/22: Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W 76/15: Setup of multiple wireless link connections
- H04W 72/51: based on terminal or device properties
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method for user equipment, UE, configuration determination for a UE connected in a radio communication network is presented. The method is performed in a base station, BS, and comprises determining a minimum candidate user equipment configuration, CUEC, wherein the CUEC comprises a special cell, SpCell, the SpCell providing connection with the UE, validating the determined minimum CUEC against capabilities of the UE, selecting a successfully validated determined minimum CUEC as a current CUEC, generating a next CUEC and comparing the generated next CUEC with the current CUEC, validating the next CUEC against the capabilities of the UE when the next CUEC has a higher weight than the current CUEC, selecting a successfully validated next CUEC as the current CUEC, and configuring the UE in accordance with the current CUEC. A BS, a distributed unit, a computer program and a computer program product for UE configuration determination are also presented.

## Claims

### Claim 1

A method for user equipment, UE, configuration determination for a UE connected in a radio communication network, the method being performed in a base station, BS, and comprising:
determining a minimum candidate user equipment configuration, CUEC, wherein the CUEC comprises a special cell, SpCell, the SpCell providing connection with the UE, wherein the SpCell is a primary cell, PCell, or a primary cell in a secondary cell group, PSCell, and wherein the SpCell in the minimum CUEC uses a minimum number of downlink, DL, and uplink, UL, multiple input multiple output, MIMO, layers supported by the SpCell;
validating the determined minimum CUEC against capabilities of the UE;
selecting a successfully validated determined minimum CUEC as a current CUEC;
generating a next CUEC and comparing the generated next CUEC with the current CUEC;
validating the next CUEC against the capabilities of the UE when the next CUEC has a higher weight than the current CUEC, wherein the weight of each CUEC is determined by one or more of an estimation of maximum data rate, cell load, and channel quality;
selecting a successfully validated next CUEC as the current CUEC; and
configuring the UE in accordance with the current CUEC.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the generating a next CUEC comprises adding one of cells available for carrier aggregation with the SpCell as downlink SCell to the current CUEC.

### Claim 3 (depends on 2)

The method according to claim 2, wherein the adding of an available cell adds a cell that is contiguous in frequency domain to a serving cell in the current CUEC.

### Claim 4 (depends on 2)

The method according to claim 2, wherein the adding of an available cell adds one with a highest weight of the available cells.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the generating a next CUEC further comprises adding a DL MIMO layer to a serving cell in the current CUEC.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the generating a next CUEC further comprises configuring a DL SCell in the current CUEC with UL.

### Claim 7 (depends on 6)

The method according to claim 6, wherein the generating a next CUEC further comprises adding an UL MIMO layer to an UL serving cell in the current CUEC.

### Claim 8 (depends on 1)

The method according to claim 1, wherein a weight of a next CUEC is compared with a weight of the current CUEC.

### Claim 9 (depends on 1)

The method according to claim 1, wherein the method being performed in a distributed unit, DU.

### Claim 10 (depends on 1)

The method according to claim 1, wherein the SpCell supports UL and DL control channels with the UE.

### Claim 11 (depends on 1)

The method according to claim 1, wherein each CUEC is supported by the BS.

### Claim 12 (depends on 1)

The method according to claim 1, wherein the weight of a CUEC is the sum of the weights of the serving cells of that CUEC.

### Claim 13 (depends on 1)

The method according to claim 1, wherein the weight of a serving cell is an estimation of a data rate that a UE configured with that serving cell may obtain.

### Claim 14

A base station for user equipment, UE, configuration determination for a UE connected in a radio communication network, the base station, BS, comprising:
a processing circuitry and a computer program product storing instructions that, when executed by the processing circuitry, causes the BS to:
determine a minimum candidate user equipment configuration, CUEC, wherein the CUEC comprises a special cell, SpCell, the SpCell providing connection with the UE, wherein the SpCell is a primary cell, PCell, or a primary cell in a secondary cell group, PSCell, and wherein the SpCell in the minimum CUEC uses a minimum number of downlink, DL, and uplink, UL, multiple input multiple output, MIMO, layers supported by the SpCell;
validate the determined minimum CUEC against capabilities of the UE;
select a successfully validated determined minimum CUEC as a current CUEC;
generate a next CUEC and compare the generated next CUEC with the current CUEC;
validate the next CUEC against the capabilities of the UE when the next CUEC has a higher weight than the current CUEC, wherein the weight of each CUEC is determined by one or more of an estimation of maximum data rate, cell load, and channel quality;
select a successfully validated next CUEC as the current CUEC; and
configure the UE in accordance with the current CUEC.

### Claim 15

A distributed unit for user equipment, UE, configuration determination for a UE connected in a radio communication network, the distributed unit, DU, comprising:
a processing circuitry and a computer program product storing instructions that, when executed by the processing circuitry, causes the DU to:
determine a minimum candidate user equipment configuration, CUEC, wherein the CUEC comprises a special cell, SpCell, the SpCell providing connection with the UE, wherein the SpCell is a primary cell, PCell, or a primary cell in a secondary cell group, PSCell, and wherein the SpCell in the minimum CUEC uses a minimum number of downlink, DL, and uplink, UL, multiple input multiple output, MIMO, layers supported by the SpCell;
validate the determined minimum CUEC against capabilities of the UE;
select a successfully validated determined minimum CUEC as a current CUEC;
generate a next CUEC and compare the generated next CUEC with the current CUEC;
validate the next CUEC against the capabilities of the UE when the next CUEC has a higher weight than the current CUEC, wherein the weight of each CUEC is determined by one or more of an estimation of maximum data rate, cell load, and channel quality;
select a successfully validated next CUEC as the current CUEC; and
configure the UE in accordance with the current CUEC.

### Claim 16

A non-transitory computer readable medium comprising instructions executable by processing circuitry of a base station for user equipment, UE, configuration determination for a UE connected in a radio communication network, whereby the base station is operable to:
determine a minimum candidate user equipment configuration, CUEC, wherein the CUEC comprises a special cell, SpCell, the SpCell providing connection with for the UE, wherein the SpCell is a primary cell, PCell, or a primary cell in a secondary cell group, PSCell, and wherein the SpCell in the minimum CUEC uses a minimum number of downlink, DL, and uplink, UL, multiple input multiple output, MIMO, layers supported by the SpCell;
validate the determined minimum CUEC against capabilities of the UE;
select a successfully validated determined minimum CUEC as a current CUEC;
generate a next CUEC and compare the generated next CUEC with the current CUEC;
validate the next CUEC against the capabilities of the UE when the next CUEC has a higher weight than the current CUEC, wherein the weight of each CUEC is determined by one or more of an estimation of maximum data rate, cell load, and channel quality;
select a successfully validated next CUEC as the current CUEC; and
configure the UE in accordance with the current CUEC.