Multi-mode Wireless Transceiver Dynamic Frequency Band Switching

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Solution Overview

Problem

The existing wireless devices face inefficiency due to circuit idleness when switching between 2.4 GHz and 5 GHz frequency bands for data and audio/video services, as these bands are not always required simultaneously, leading to resource wastage.

Innovation Solution

A multi-mode wireless transceiver with RF transceiving circuits, frequency synthesizers, a switching circuit, and an RF controller that allows flexible switching between multiple frequency bands based on bandwidth demands, enabling dynamic operation and resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate 2.4 GHz and 5 GHz transceiving circuits are prepared for data services and audio/video services respectively, then service quality is improved, but device complexity increases

Engineering Contradiction:
Improveservice qualityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent makes the 5 GHz transceiving circuit capable of serving dual purposes: audio/video services in 5 GHz band and data services in 2.4 GHz band. The circuit can be dynamically switched between frequency bands based on service requirements, allowing one circuit to perform multiple functions that previously required separate dedicated circuits.

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

Solution Approach 2:

The patent introduces dynamic frequency band switching capability where the 5 GHz transceiving circuit can adaptively change its operating frequency band according to real-time service demands. This dynamic reconfiguration allows the system to optimize resource allocation without requiring static dedicated circuits for each service type.

Inventive Principle:
Principle #15Dynamics

2Reliability

If dedicated transceiving circuits are allocated for different frequency bands, then service performance is improved, but resource utilization deteriorates due to circuit idleness

Engineering Contradiction:
Improveservice performanceVSAvoidresource utilization
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent implements dynamic frequency band allocation where the 5 GHz transceiving circuit can switch between 5 GHz and 2.4 GHz bands based on active service requirements. When 5 GHz audio/video services are not active, the circuit dynamically transitions to handle 2.4 GHz data services, ensuring continuous productive utilization and eliminating idle periods.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the operating parameter (frequency band) of the transceiving circuit dynamically based on service demands. The circuit can adjust its center frequency and band configuration in real-time, transitioning between 2.4 GHz and 5 GHz operations to match active service requirements, thereby optimizing resource utilization across different service scenarios.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8977218B2Multi-mode wireless transceiver and multi-mode switching method thereof
Publication Date: 2015.03.10 REALTEK SEMICON CORP
  • US8977218B2 patent drawing
  • US8977218B2 patent drawing
  • US8977218B2 patent drawing

AI summary

A multi-mode wireless transceiver and a multi-mode switching method thereof are disclosed to provide at least one wireless transceiving interface capable of dynamically switching between multiple frequency bands. The wireless transceiver comprises: a first RF transceiving circuit for transceiving RF signals of a first frequency band; a second RF transceiving circuit for transceiving RF signals of a second frequency band; a first frequency synthesizer and a second frequency synthesizer for generating a first carrier of the first frequency band and a second carrier of the second frequency band respectively; and a switching circuit for outputting the first carrier to the first RF transceiving circuit, and for determining to output one of the first and second carriers to the second RF transceiving circuit according to a control signal.