NFC Controller Memory Disabling for Mobile Devices
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Solution Overview
Problem
Existing mobile communication devices face inefficiencies in managing and selecting the appropriate near-field communication (NFC) applications based on context, leading to increased processing time and power consumption, as well as potential conflicts between different secure elements attempting to communicate simultaneously.
Innovation Solution
A mobile wireless communications device equipped with a processor that selects and enables specific NFC applications based on geographic location, light level, and time, using a position determining device, light sensor, and timer to determine the appropriate application and disable unnecessary memory, thereby optimizing processing speed and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple NFC applications are stored in different secure elements, then application availability and versatility are improved, but processing time and power consumption increase
Solution Approach 1:
The system pre-determines and stores mapping relationships between NFC protocols and secure elements in advance. When an NFC communication is initiated, the processor directly retrieves the appropriate secure element based on the protocol type without searching through multiple applications, thereby reducing processing time while maintaining application availability.
2Adaptability or versatility
If multiple secure elements are enabled simultaneously, then application versatility is improved, but power consumption increases
Solution Approach 1:
The system pre-configures mapping information that associates each NFC protocol type with its corresponding secure element. This allows the processor to immediately activate only the specific secure element needed for the current communication protocol, avoiding the continuous power consumption that would result from keeping multiple secure elements enabled simultaneously.
3Adaptability or versatility
If multiple secure elements attempt to communicate simultaneously, then application functionality is improved, but communication conflicts increase
Solution Approach 1:
The system establishes predetermined mappings between NFC protocols and specific secure elements before communication occurs. This pre-configuration ensures that only the appropriate secure element is activated for each protocol type, preventing simultaneous communication attempts from multiple secure elements that would cause conflicts and reliability issues.
4Adaptability or versatility
If all NFC applications are always accessible, then application availability is improved, but processing cycles increase
Solution Approach 1:
The system pre-stores mapping relationships that directly associate NFC protocol types with their corresponding secure elements and applications. When an NFC communication is initiated, the processor efficiently retrieves the correct application through this pre-established mapping without needing to search through or evaluate all available applications, thus maintaining application accessibility while significantly improving processing efficiency.
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
This approach allows for efficient selection and management of NFC applications, reducing processing cycles and power consumption, while minimizing conflicts between secure elements, and enabling seamless access to secure areas or services based on context.
Implementation Method 1
NFC technology is commonly used for contactless short-range communications based on radio frequency identification (RFID) standards, using magnetic field induction to enable communication between electronic devices
Data Source
AI summary
A mobile wireless communications device may include wireless transceiver circuitry and a processor coupled to the wireless transceiver circuitry. The mobile wireless communication device may also include a near-field communication (NFC) device coupled to the processor. The NFC device may include an NFC controller, an NFC transceiver coupled to the NFC controller, and a first memory coupled to the NFC controller and configured to store a first plurality of applications. The mobile wireless communications device may also include a second memory configured to store a second plurality of applications. The processor may be configured to select a given application on a respective one of the first and second memories and to disable the other one of the first and second memories.