Dual-Mode Communication Chip With Shared RF and Baseband Modules

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Solution Overview

Problem

Existing dual-mode communication chips in mobile terminals, such as smartphones and tablets, suffer from low integration level, large area, and high costs due to separate GSM and NB-IoT chips with respective radio frequency, digital front-end, and baseband processing modules.

Innovation Solution

A communication chip design that integrates a system control module, radio frequency signal processing module, first and second baseband processing modules, where these modules share common components like the system control module and radio frequency signal processing module, reducing redundancy and improving integration, area, and costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate GSM and NB-IoT chips are used with respective radio frequency processing modules, digital front-end modules, and baseband processing modules, then each communication mode can be independently supported, but the integration level is low, chip area is large, and costs are high

Engineering Contradiction:
Improvecommunication mode supportVSAvoidintegration level
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the radio frequency processing module and digital front-end module into a shared resource that serves both GSM and NB-IoT baseband processing modules. This consolidation reduces the total number of components while maintaining support for both communication modes, directly resolving the contradiction between versatility and integration level

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The shared radio frequency processing module and digital front-end module are designed to be universal, capable of working with multiple types of baseband processing modules (GSM and NB-IoT). This multi-functionality allows a single set of components to serve multiple communication protocols, improving integration without sacrificing adaptability

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If separate GSM and NB-IoT chips are used with respective radio frequency processing modules, digital front-end modules, and baseband processing modules, then each communication mode can be independently supported, but chip area is large

Engineering Contradiction:
Improvecommunication mode supportVSAvoidchip area
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent merges the radio frequency processing module and digital front-end module into a shared resource that serves both GSM and NB-IoT baseband processing modules. This consolidation reduces the total number of components while maintaining support for both communication modes, directly resolving the contradiction between versatility and integration level

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The shared radio frequency processing module and digital front-end module are designed to be universal, capable of working with multiple types of baseband processing modules (GSM and NB-IoT). This multi-functionality allows a single set of components to serve multiple communication protocols, improving integration without sacrificing adaptability

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If separate GSM and NB-IoT chips are used with respective radio frequency processing modules, digital front-end modules, and baseband processing modules, then each communication mode can be independently supported, but costs are high

Engineering Contradiction:
Improvecommunication mode supportVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges the radio frequency processing module and digital front-end module into a shared resource that serves both GSM and NB-IoT baseband processing modules. This consolidation reduces the total number of components while maintaining support for both communication modes, directly resolving the contradiction between versatility and integration level

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The shared radio frequency processing module and digital front-end module are designed to be universal, capable of working with multiple types of baseband processing modules (GSM and NB-IoT). This multi-functionality allows a single set of components to serve multiple communication protocols, improving integration without sacrificing adaptability

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Adaptability or versatility

If separate GSM and NB-IoT chips are used with respective radio frequency processing modules, digital front-end modules, and baseband processing modules, then each communication mode can be independently supported, but power consumption is high

Engineering Contradiction:
Improvecommunication mode supportVSAvoidpower consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent merges the radio frequency processing module and digital front-end module into a shared resource that serves both GSM and NB-IoT baseband processing modules. This consolidation reduces the total number of components while maintaining support for both communication modes, directly resolving the contradiction between versatility and integration level

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The shared radio frequency processing module and digital front-end module are designed to be universal, capable of working with multiple types of baseband processing modules (GSM and NB-IoT). This multi-functionality allows a single set of components to serve multiple communication protocols, improving integration without sacrificing adaptability

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS12531587B2Communication chip
Publication Date: 2026.01.20 RDA MICROELECTRONICS BEIJING
  • US12531587B2 patent drawing
  • US12531587B2 patent drawing
  • US12531587B2 patent drawing

AI summary

The present disclosure provides a communication chip, which is applied to a terminal device and includes a system control module, a radio frequency signal processing module, a first baseband processing module, and a second baseband processing module, where the system control module is respectively connected to the radio frequency signal processing module, the first baseband processing module and the second baseband processing module; the radio frequency signal processing module is further respectively connected to the first baseband processing module and the second baseband processing module.