# US 12,604,251 B2 · Method and electronic device to transmit capability for dual sim dual active device in wireless communication network

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- Number: US 12,604,251 B2
- Document ID: US12604251B2
- Status: Granted
- Kind: B2
- Application number: 18/328,274
- Filed: 2023-06-02
- Published: 2023-12-07
- Granted: 2026-04-14
- Earliest claimed: 2022-06-02
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Jajohn Mathew Mattam; Jagadeesh Gurugubelli; Vinay Kumar Shrivastava
- Web page: https://patentgrep.com/patent/US12604251B2

## CPC

- H04W 36/304: {due to measured or perceived resources with higher communication quality}
- H04W 76/15: Setup of multiple wireless link connections
- H04W 8/22: Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W 36/00698: {using different RATs}
- H04W 52/281: {taking into account user or data type priority}
- H04W 52/346: {distributing total power among users or channels}
- H04W 52/40: during macro-diversity or soft handoff
- H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
- H04W 8/183: {Processing at user equipment or user record carrier}
- H04W 8/24: Transfer of terminal data
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- 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 transmitting user equipment (UE) capability by a dual subscriber identity module (SIM) dual active (DSDA) user equipment (DSDA UE) is disclosed. The method comprises determining a corresponding service category for each of a first stack and a second stack based on at least one stack parameter indicated by the first stack and the second stack. The method comprises determining a mode associated with the DSDA UE based on the corresponding service categories of the first and second stacks. The method comprises receiving corresponding band information associated with the first and second stacks from at least one network entity associated with a network. The method comprises adjusting the UE based on the mode and the corresponding band information associated with the first and second stacks. The method comprises transmitting the adjusted UE capability to the at least one network entity.

## Claims

### Claim 1

A method for transmitting user equipment (UE) capability for a dual subscriber identity module (SIM) dual active (DSDA) user equipment (DSDA UE) by an electronic device, the method comprising:
determining a corresponding service category for each of a first stack and a second stack of the DSDA UE based on at least one stack parameter, wherein the at least one stack parameter is indicated by each of the first stack and the second stack;
determining a mode associated with the DSDA UE based on the corresponding service categories of the first stack and the second stack;
receiving, from at least one network entity, corresponding band information associated with the first stack and the second stack, wherein the at least one network entity is associated with a network in communication with the DSDA UE;
adjusting UE capability associated with the DSDA UE based on the mode and the corresponding band information associated with the first stack and the second stack; and
transmitting, to the at least one network entity, the adjusted UE capability.

### Claim 2 (depends on 1)

The method of claim 1, wherein adjusting the UE capability comprises:
accessing a complete list of carrier aggregation (CA)multi-radio access technology (RAT) dual connectivity (MRDC) capability combinations associated with the DSDA UE;
generating, for each of the first and second stacks, a corresponding subset combination list; and
updating the corresponding subset combination list based on a change in band information associated with the first stack and the second stack.

### Claim 3 (depends on 1)

The method of claim 1, wherein adjusting the UE capability comprises:
accessing a complete list of carrier aggregation (CA)/multi-radio access technology (RAT) dual connectivity (MRDC) capability combinations associated with the DSDA UE, wherein the complete list of CA/MRDC capability combinations is stored in a database;
generating, based on the complete list of CA/MRDC capability combinations, a corresponding subset combination list for the first stack based on the corresponding service category associated with the first stack, and corresponding band information associated with each of the first stack and the second stack;
generating, based on the complete list of CA/MRDC capability combinations, a corresponding subset combination list for the second stack based on the corresponding service category associated with the second stack, and corresponding band information associated with each of the first stack and the second stack;
determining a change in band information associated with one of the first stack and the second stack;
updating the corresponding subset combination list associated with the one of the first stack and the second stack based on the change in band information; and
accessing the updated corresponding subset combination list by the other of the first stack and the second stack.

### Claim 4 (depends on 3)

The method of claim 3, comprising:
determining a change in service category associated with one of the first stack and the second stack;
based on determining the change in service category associated with one of the first stack and the second stack, updating the corresponding subset combination list associated with the first stack and the corresponding subset combination list associated with the second stack based on the band information associated with the first stack and the second stack; and
accessing the updated corresponding subset combination list associated with the first stack and the updated corresponding subset combination list associated with the second stack by the first stack and the second stack.

### Claim 5 (depends on 1)

The method of claim 1, wherein adjusting the UE capability comprises:
accessing a complete list of carrier aggregation (CA)/multi-radio access technology (RAT) dual connectivity (MRDC) capability combinations associated with the DSDA UE, wherein the complete list of CA/MRDC capability combinations is stored in a database;
generating, based on the complete list of CA/MRDC capability combinations, a corresponding band list for the first stack based on the corresponding service category associated with the first stack and corresponding band information associated with each of the first stack and the second stack, wherein the band list associated with the first stack comprises at least one proposed band for establishing a connection with the first stack;
generating, based on the complete list of CA/MRDC capability combinations, a corresponding band list for the second stack based on the corresponding service category associated with the second stack and corresponding band information associated with each of the first stack and the second stack, wherein the band list associated with the second stack comprises at least one proposed band for establishing a connection with the second stack;
determining a change in band information associated with one of the first stack and the second stack;
updating the corresponding band list associated with the first stack and the corresponding band list associated with the second stack based on the change in band information; and
accessing the updated corresponding band list associated with the first stack and the corresponding band list associated with the second stack by the first stack and the second stack respectively.

### Claim 6 (depends on 1)

The method of claim 1, wherein adjusting the UE capability comprises:
accessing a complete list of carrier aggregation (CA)/multi-radio access technology (RAT) dual connectivity (MRDC) capability combinations associated with the DSDA UE, wherein the complete list of CA/MRDC capability combinations is stored in a database;
generating, based on the complete list of CA/MRDC capability combinations, a corresponding band list for the first stack associated with a first band and the second stack associated with a second band, wherein the corresponding band list for the first stack and the second stack is generated based on a priority of service associated with the first band and a priority of service associated with the second band;
determining whether the first stack is associated with a high-priority service and whether the first stack establishes a connection with the second band; and
upon determining that the first stack is associated with a high-priority service and the first stack has established a connection with the second band:
causing the second stack to drop the second band;
updating the corresponding band list associated with the first stack and the corresponding band list associated with the second stack based on the drop of the second band; and
accessing the updated corresponding band list associated with the first stack and the corresponding band list associated with the second stack by the first stack and the second stack.

### Claim 7 (depends on 1)

The method of claim 1, wherein the at least one stack parameter comprises at least one of buffer occupancy, amount of data arrival, latency details, and data type.

### Claim 8 (depends on 1)

The method of claim 1, wherein determining the mode comprises:
determining a current combination of the corresponding service category of the first stack with the corresponding service category of the second stack;
accessing a list of pre-stored service category combinations, the list of pre-stored service category combinations comprising a plurality of service combinations of the corresponding service categories of the first stack and the second stack, wherein each of the plurality of service combinations is associated with a linked mode;
identifying, from the list of pre-stored service category combinations, a matched service category combination that matches with the determined current combination of the corresponding service category of the first stack with the corresponding service category of the second stack;
accessing the linked mode associated with the match service category combination; and
determining the linked mode to be the mode associated with the DSDA UE.

### Claim 9 (depends on 1)

The method of claim 1, wherein receiving the corresponding band information comprises:
receiving, from the at least one network entity, for each of the first stack and the second stack, a corresponding system information block (SIB), and
extracting the band information from the corresponding SIB, wherein the corresponding band information comprises serving cell information and neighboring cell information.

### Claim 10 (depends on 1)

The method of claim 1, wherein the first stack is associated with a first transmit power, the second stack is associated with a second transmit power, and the DSDA UE is associated with a total transmit power corresponding to a sum of the first transmit power and the second transmit power, and wherein the method comprises:
determining whether a priority service is associated with one of the first stack and the second stack;
upon determining that the priority service is associated with the first stack, increasing the first transmit power by a first value and decreasing the second transmit power by a second value; and
upon determining that the priority service is associated with the second stack, increasing the second transmit power by the first value and decreasing the first transmit power by the second value, wherein the total transmit power remains a sum of the first transmit power and the second transmit power.

### Claim 11

An electronic device configured to transmit user equipment (UE) capability for a dual subscriber identity module (SIM) dual active (DSDA) user equipment (DSDA UE), the electronic device comprising:
a first stack;
a second stack;
memory storing instructions; and
at least one processor comprising processing circuitry, wherein the instructions, when executed by the at least one processor, cause the electronic device to:
determine a corresponding service category for each of the first stack and the second stack based on at least one stack parameter, wherein the at least one stack parameter is indicated by each of the first stack and the second stack;
determine a mode associated with the DSDA UE based on the corresponding service categories of the first stack and the second stack;
receive, from at least one network entity, corresponding band information associated with the first stack and the second stack, wherein the at least one network entity is associated with a network in communication with the DSDA UE;
adjust UE capability associated with the DSDA UE based on the mode and the corresponding band information associated with the first stack and the second stack; and
transmit, to the at least one network entity, the adjusted UE capability to the at least one network entity associated with the network.

### Claim 12 (depends on 11)

The electronic device of claim 11, wherein to adjust the UE capability, the instructions, when executed by the at least one processor, cause the electronic device to:
access a complete list of carrier aggregation (CA)multi-radio access technology (RAT) dual connectivity (MRDC) capability combinations associated with the DSDA UE;
generate, for each of the first and second stacks, a corresponding subset combination list; and
update the corresponding subset combination list based on a change in band information associated with the first stack and the second stack.

### Claim 13 (depends on 11)

The electronic device of claim 11, wherein to adjust the UE capability, the instructions, when executed by the at least one processor, cause the electronic device to:
access a complete list of carrier aggregation (CA)/multi-radio access technology (RAT) dual connectivity (MRDC) capability combinations associated with the DSDA UE, wherein the complete list of CA/MRDC capability combinations is stored in a database;
generate, based on the complete list of CA/MRDC capability combinations, a corresponding subset combination list for the first stack based on the corresponding service category associated with the first stack and corresponding band information associated with each of the first stack and the second stack;
generate, based on the complete list of CA/MRDC capability combinations, a corresponding subset combination list for the second stack based on the corresponding service category associated with the second stack and corresponding band information associated with each of the first stack and the second stack;
determine a change in band information associated with one of the first stack and the second stack;
update the corresponding subset combination list associated with the one of the first stack and the second stack based on the change in band information; and
access the updated corresponding subset combination list by the other of the first stack and the second stack.

### Claim 14 (depends on 13)

The electronic device of claim 13, wherein the instructions, when executed by the at least one processor, cause the electronic device to:
determine a change in service category associated with one of the first stack and the second stack;
upon determining the change in service category associated with one of the first stack and the second stack, update the corresponding subset combination list associated with the first stack and the corresponding subset combination list associated with the second stack based on the band information associated with the first stack and the second stack; and
access the updated corresponding subset combination list associated with the first stack and the updated corresponding subset combination list associated with the second stack by the first stack and the second stack.

### Claim 15 (depends on 11)

The electronic device of claim 11, wherein to adjust the UE capability, the instructions, when executed by the at least one processor, cause the electronic device to:
access a complete list of carrier aggregation (CA)/multi-radio access technology (RAT) dual connectivity (MRDC) capability combinations associated with the DSDA UE, wherein the complete list of CA/MRDC capability combinations is stored in a database;
generate, based on the complete list of CA/MRDC capability combinations, a corresponding band list for the first stack based on the corresponding service category associated with the first stack and corresponding band information associated with each of the first stack and the second stack, wherein the band list associated with the first stack comprises at least one proposed band for establishing a connection with the first stack;
generate, based on the complete list of CA/MRDC capability combinations, a corresponding band list for the second stack based on the corresponding service category associated with the second stack and corresponding band information associated with each of the first stack and the second stack, wherein the band list associated with the second stack comprises at least one proposed band for establishing a connection with the second stack;
determine a change in band information associated with one of the first stack and the second stack;
update the corresponding band list associated with the first stack and the corresponding band list associated with the second stack based on the change in band information; and
access the updated corresponding band list associated with the first stack and the corresponding band list associated with the second stack by the first stack and the second stack, respectively.

### Claim 16 (depends on 11)

The electronic device of claim 11, wherein to adjust the UE capability, the instructions, when executed by the at least one processor, cause the electronic device to:
access a complete list of carrier aggregation (CA)/multi-radio access technology (RAT) dual connectivity (MRDC) capability combinations associated with the DSDA UE, wherein the complete list of CA/MRDC capability combinations is stored in a database;
generate, based on the complete list of CA/MRDC capability combinations, a corresponding band list for the first stack associated with a first band and the second stack associated with a second band, wherein the corresponding band list for the first stack and the second stack is generated based on a priority of service associated with the first band and a priority of service associated with the second band;
determine whether the first stack is associated with a high-priority service and whether the first stack establishes a connection with the second band; and
upon determining that the first stack is associated with a high-priority service and the first stack has established a connection with the second band:
cause the second stack to drop the second band;
update the corresponding band list associated with the first stack and the corresponding band list associated with the second stack based on the drop of the second band; and
access the updated corresponding band list associated with the first stack and the corresponding band list associated with the second stack by the first stack and the second stack,
wherein the at least one stack parameter comprise at least one of buffer occupancy, amount of data arrival, latency details, and data type.

### Claim 17 (depends on 11)

The electronic device of claim 11, wherein to determine the mode, the instructions, when executed by the at least one processor, cause the electronic device to:
determine a current combination of the corresponding service category of the first stack with the corresponding service category of the second stack;
access a list of pre-stored service category combinations, the list of pre-stored service category combinations comprising a plurality of service combinations of the corresponding service categories of the first stack and the second stack, wherein each of the plurality of service combinations is associated with a linked mode;
identify, from the list of pre-stored service category combinations, a matched service category combination that matches with the determined combination of the corresponding service category of the first stack with the corresponding service category of the second stack;
access the linked mode associated with the match service category combination; and
determine the linked mode to be the mode associated with the DSDA UE.

### Claim 18 (depends on 11)

The electronic device of claim 11, wherein to receive corresponding band information, the instructions, when executed by the at least one processor, cause the electronic device to receive, for each of the first stack and the second stack, a corresponding system information block (SIB) from the one or more network entity associated with the network, and extract the band information from the corresponding SIB, wherein the corresponding band information comprises serving cell information and neighboring cell information.

### Claim 19 (depends on 11)

The electronic device of claim 11, wherein the first stack is associated with a first transmit power, the second stack is associated with a second transmit power, and the DSDA UE is associated with a total transmit power corresponding to a sum of the first transmit power and the second transmit power, and wherein the instructions, when executed by the at least one processor, cause the electronic device to:
determine whether a priority service is associated with one of the first stack \ and the second stack;
upon determining that the priority service is associated with the first stack, increase the first transmit power by a first value and decrease the second transmit power by a second value, and
upon determining that the priority service is associated with the second stack, increase the second transmit power by a first value and decrease the first transmit power by a second value, wherein the total transmit power remains a sum of the first transmit power and the second transmit power.

### Claim 20

A non-transitory computer readable storage medium storing instructions which, when executed by at least one processor of an electronic device, causes the electronic device to perform operations for transmitting user equipment (UE) capability for a dual subscriber identity module (SIM) dual active (DSDA) user equipment (DSDA UE), the operations comprising:
determining a corresponding service category for each of a first stack and a second stack of the DSDA UE based on at least one stack parameter, wherein the at least one stack parameter is indicated by each of the first stack and the second stack;
determining a mode associated with the DSDA UE based on the corresponding service categories of the first stack and the second stack;
receiving, from at least one network entity, corresponding band information associated with the first stack and the second stack, wherein the at least one network entity is associated with a network in communication with the DSDA UE;
adjusting UE capability associated with the DSDA UE based on the mode and the corresponding band information associated with the first stack and the second stack; and
transmitting, to the at least one network entity, the adjusted UE capability.