Mitigating Voltage Droop in Dual-Transceiver Wireless Devices

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Solution Overview

Problem

Multi-transceiver wireless communication devices experience battery voltage droop and interference issues due to simultaneous transmissions, leading to potential device malfunction and interference among connections.

Innovation Solution

The implementation of algorithms within the mobile device to determine and alter the operations of transceivers, such as shifting transmissions, reducing power, or delaying operations, to mitigate battery voltage droop and interference during simultaneous connections, without requiring network intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple transceivers transmit simultaneously to support multiple active connections, then communication productivity is improved, but battery voltage droop and device overheating worsen

Engineering Contradiction:

Improvecommunication productivityVSAvoiddevice temperature

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The system performs preliminary detection of voltage droop conditions before simultaneous transmissions occur. The processor monitors battery voltage and identifies when voltage droop is likely to occur during simultaneous transceiver operations, then takes preventive actions such as delaying or canceling one of the transmissions to avoid overheating and device malfunction.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If multiple transceivers transmit simultaneously to support multiple active connections, then communication productivity is improved, but device reliability worsens due to voltage droop

Engineering Contradiction:

Improvecommunication productivityVSAvoiddevice reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system implements continuous feedback monitoring of battery voltage during simultaneous transceiver operations. When voltage droop exceeds a predetermined threshold, the processor receives feedback about the deteriorating voltage condition and automatically adjusts transmission schedules by delaying or canceling transmissions to maintain device reliability and prevent shutdown.

Inventive Principle:

Principle #23Feedback

3Reliability

If transceiver operations are altered to mitigate voltage droop, then device reliability is improved, but communication productivity deteriorates

Engineering Contradiction:

Improvedevice reliabilityVSAvoidcommunication productivity

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system applies partial mitigation actions rather than complete cancellation. Instead of always delaying or canceling transmissions when voltage droop is detected, the processor evaluates the severity and duration of the voltage drop, and only intervenes when necessary to prevent device shutdown. This partial action approach maintains reliability while preserving communication productivity during less critical moments.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS9167446B2Apparatus and method for mitigating voltage droop in a dual-transceiver wireless communication device

Publication Date: 2015.10.20 QUALCOMM INC

AI summary

Aspects of the present disclosure relate to a user equipment (UE) and a method of wireless communication using the UE that includes a first transceiver and a second transceiver. The method includes determining that the first transceiver is scheduled to communicate using a first transmission simultaneous to the second transceiver being scheduled to communicate using a second transmission, and altering an operation of at least one of the first and second transceivers to mitigate battery voltage droop due to simultaneous transmissions of the transceivers. Other aspects, embodiments, and features are also claimed and described.