Wireless Device Multiple SIM Capability Notification

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Solution Overview

Problem

Wireless devices with multiple SIM capabilities face constraints in simultaneous communication due to shared transmit or receive chains, leading to unusable subscriptions and RF impairments, and networks often schedule communications that interfere with the device's multiple SIM usage without knowledge of its capabilities.

Innovation Solution

The wireless device notifies network nodes of its multiple SIM capability, including physical characteristics, scheduling information, and performance metrics, allowing networks to modify communication parameters to optimize SIM usage and reduce interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a wireless device uses shared transmit or receive chains for multiple SIMs, then device complexity is reduced, but simultaneous communication capability deteriorates

Engineering Contradiction:

Improvetransmit and receive chain configurationVSAvoidsimultaneous communication capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic resource allocation where the wireless device can flexibly switch between shared and dedicated transmit/receive chain configurations based on communication requirements. The device determines capability information dynamically and notifies networks accordingly, allowing adaptive adjustment of simultaneous communication capabilities without permanent hardware constraints.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If a network schedules communications without knowledge of device multiple SIM capability, then network scheduling simplicity is maintained, but communication interference increases

Engineering Contradiction:

Improvenetwork scheduling complexityVSAvoidcommunication interference

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by having the wireless device proactively notify networks of its multiple SIM capability and constraints before actual communication occurs. The device sends capability information including transmit/receive chain sharing status and RF impairment characteristics in advance, allowing networks to pre-adjust scheduling parameters and avoid future interference without complex real-time coordination.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If transmit or receive chains are blanked to avoid RF impairments, then signal quality is improved, but resource utilization deteriorates

Engineering Contradiction:

Improvesignal qualityVSAvoidresource utilization

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent implements parameter changes by dynamically adjusting transmit/receive chain allocation based on communication conditions. Instead of permanently blanking chains to avoid RF impairments, the device changes the operational parameters of chains on-demand, activating them only when needed for specific SIM communications. This allows full resource utilization while maintaining signal quality through conditional parameter adjustment rather than static resource allocation.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9474105B2User equipment having a multiple subscriber identity module capability understood by one or more networks

Publication Date: 2016.10.18 QUALCOMM INC

AI summary

A user equipment (UE) may determine a capability of the UE to support multiple subscriber identity modules (SIMs). The multiple SIMs may enable the UE to communicate with multiple network nodes. The UE may notify at least one network node of the multiple network nodes of the multiple SIM capability of the UE.