Bluetooth LOGEN Sharing for Simultaneous FM Transmit and Receive
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Solution Overview
Problem
Integrating simultaneous FM transmitter and FM receiver functions into a single portable electronic device is challenging due to the need for separate processing hardware and software, significant power consumption, and design restrictions, particularly in wireless mobile devices that require careful power management to minimize battery usage.
Innovation Solution
A system and method utilizing an integrated Bluetooth Local Oscillator Generator (LOGEN) to enable simultaneous FM transmitter and FM receiver functions, where the LOGEN generates clock signals for both Bluetooth and FM transceivers, allowing for simultaneous RF communication operations by using direct digital frequency synthesizers (DDFS) controlled by a baseband processor to manage frequency and phase changes without feedback loops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate processing hardware and software are used for FM transmitter and FM receiver functions, then the device can perform both communication functions, but the device complexity and power consumption increase significantly
Solution Approach 1:
The patent combines multiple communication functions (FM transmitter, FM receiver, and Bluetooth) into a single integrated transceiver device. This merging eliminates the need for separate processing hardware for each function, thereby reducing device complexity while maintaining versatility in communication capabilities
Solution Approach 2:
The integrated transceiver is designed to perform multiple communication functions simultaneously through a single device architecture. The universal design allows the same hardware to handle both FM and Bluetooth protocols, reducing the overall complexity compared to having dedicated separate hardware for each function
2Adaptability or versatility
If multiple radios are used simultaneously in a handheld device, then both FM and Bluetooth communication can operate at the same time, but power consumption increases significantly
Solution Approach 1:
The patent merges FM and Bluetooth communication functions into a single integrated transceiver that shares common hardware resources including the Local Oscillator Generator. This sharing of resources reduces the total power consumption compared to having completely separate radio systems operating simultaneously
Solution Approach 2:
The universal transceiver design allows the device to handle both FM and Bluetooth protocols through a single power-efficient architecture. The shared LOGEN and common processing resources reduce overall power consumption while maintaining the capability for simultaneous communication operations
3Device complexity
If a single LOGEN is used to clock both Bluetooth and FM transceivers, then power consumption and design complexity are reduced, but coordinating simultaneous operations becomes challenging
Solution Approach 1:
The patent introduces a coordinator module that acts as an intermediary between the Bluetooth and FM transceiver operations. This coordinator manages the shared LOGEN resource and coordinates simultaneous operations by allocating time slots and managing frequency hopping patterns, making the integrated system easier to operate despite the complexity of sharing resources
Solution Approach 2:
The system employs dynamic resource allocation where the coordinator continuously adjusts the operation parameters of both transceivers based on current communication needs. The LOGEN frequency and phase are dynamically controlled to accommodate simultaneous Bluetooth and FM operations, making the system adaptable and easier to manage under varying conditions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient simultaneous operation of Bluetooth and FM communication protocols, reducing power consumption and design complexity while maintaining battery life, by using a single LOGEN to clock both transceivers and manage frequency hopping without signal discontinuities.
Implementation Method 1
A system and method utilizing an integrated Bluetooth Local Oscillator Generator (LOGEN) to enable simultaneous FM transmitter and FM receiver functions
Implementation Method 2
using direct digital frequency synthesizers (DDFS) controlled by a baseband processor to manage frequency and phase changes without feedback loops
Data Source
AI summary
Aspects of a method and system for enabling simultaneous FM transmitter and FM receiver functions using an integrated Bluetooth Local Oscillator Generator (LOGEN). A Bluetooth® LOGEN may be utilized to generate Bluetooth® signal that comprise (I) and (Q) components for use in Bluetooth® communication. The Bluetooth® LOGEN may then be utilized by a DDFS to generate FM radio (I) and (Q) signals for FM radio reception. The Bluetooth® LOGEN may also be utilized by a second DDFS to generate FM radio (I) and (Q) signals for FM radio reception. The Bluetooth® signals may be kept at the same frequency, or reduced in frequency, for use in clocking the DDFS. A frequency word may also be utilized to clock the two DDFS. The outputs of each DDFS may be a constant frequency while the inputs to each DDFS may vary in frequency.