Multi-SIM RCS Capability Matching to Cut Exchange Power

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Solution Overview

Problem

In multi-SIM environments, the capability exchange for RCS services consumes significant power and time due to the need to perform verification for each SIM, reducing the device's battery life.

Innovation Solution

An electronic device with a multi-SIM system generates a matching map comparing RCS functions supported by each SIM, performs capability exchange only when necessary, and activates or deactivates functions based on the map results, reducing unnecessary power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If capability exchange is collectively performed for all contacts in multi-SIM environment, then complete RCS service verification is achieved, but power consumption increases and execution time extends

Engineering Contradiction:

ImproveRCS service verification completenessVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs capability exchange preliminarily for the first SIM card to establish a matching map of RCS functions, then reuses this preliminary verification result for the second SIM card when capabilities match, avoiding redundant power consumption while ensuring complete RCS service verification

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system creates a matching map (copy of capability verification results) from the first SIM card's capability exchange and applies this copied information to the second SIM card, eliminating the need to perform identical verification procedures again and reducing overall power consumption

Inventive Principle:

Principle #26Copying

2Reliability

If capability exchange is collectively performed for all contacts in multi-SIM environment, then complete RCS service verification is achieved, but execution time extends

Engineering Contradiction:

ImproveRCS service verification completenessVSAvoidexecution time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs capability exchange preliminarily for the first SIM card to establish a matching map of RCS functions, then reuses this preliminary verification result for the second SIM card when capabilities match, avoiding redundant execution time while ensuring complete RCS service verification

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Inventive Principle:

Principle #26Copying

3Measurement precision

If capability exchange is performed for each SIM separately, then accurate RCS function verification is achieved, but power consumption increases

Engineering Contradiction:

ImproveRCS function verification accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The system performs capability exchange preliminarily for the first SIM card to establish a matching map of RCS functions, then reuses this preliminary verification result for the second SIM card when capabilities match, maintaining accurate RCS function verification while avoiding redundant power consumption

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system creates a matching map (copy of capability verification results) from the first SIM card's capability exchange and applies this copied information to the second SIM card, maintaining verification accuracy by comparing against the matched SIM's capabilities while eliminating redundant power consumption

Inventive Principle:

Principle #26Copying

Data Source

PatentEP4114139B1Low-power RCS communication device and method thereof

Publication Date: 2025.11.12 SAMSUNG ELECTRONICS CO LTD

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AI summary

An electronic device may comprise a wireless communication circuit, a processor operatively connected to the wireless communication circuit, multiple SIMs, and a memory operatively connected to the processor. The memory may store instructions which, when executed, cause the processor to: acquire first subscriber identification information and second subscriber identification information from the multiple SIMs; generate a matching map in which RCS functions supported by the first subscriber identification information and the second subscriber identification information are compared; search for whether the first subscriber identification information and the second subscriber identification information are matched to each other, by using the matching map; when the first subscriber identification information and the second subscriber identification information are not matched to each other, perform capability exchange with an external electronic device for the first subscriber identification information by using the wireless communication circuit; when the first subscriber identification information and the second subscriber identification information are matched to each other, search for whether a result of capability exchange for the second subscriber identification information is stored in the second subscriber identification information; and determine whether to activate or deactivate an RCS function which can be supported by the first subscriber identification information on the basis of the result of the capability exchange for the second subscriber identification information.