Reject Message Reliability Filtering for Wireless Resource Management
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Solution Overview
Problem
Mobile devices face challenges in effectively handling reject messages from unreliable sources, particularly in distinguishing between genuine and fake reject messages from service provider networks, which can lead to security attacks and inefficient resource management.
Innovation Solution
The method involves determining the reliability of reject messages by checking for integrity protection and storing forbidden resources accordingly, using separate lists or memory devices for reliable and unreliable resources, and maintaining these based on reliability attributes, with trigger events like timer expiration or power-off removing unreliable resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile device stores all reject messages to maintain comprehensive resource tracking, then the completeness of forbidden resource tracking is improved, but the risk of storing fake reject messages from unreliable sources increases
Solution Approach 1:
The patent applies local quality by differentiating the treatment of reject messages based on their source reliability. Reliable reject messages (from integrity-protected sources) are stored in a first list with long-term validity, while unreliable reject messages (from non-integrity-protected sources) are stored in a second list with short-term validity. This selective approach ensures comprehensive tracking of genuine forbidden resources while limiting the impact of fake reject messages.
Solution Approach 2:
The patent segments the storage of forbidden resources into two distinct lists: a first list for reliable reject messages and a second list for unreliable reject messages. This segmentation allows the device to maintain separate management policies for each list, applying different validity periods and removal conditions, thereby resolving the contradiction between comprehensive tracking and security.
2Device complexity
If the mobile device maintains a single list of forbidden resources, then the simplicity of resource management is improved, but the ability to distinguish between reliable and unreliable reject messages is reduced
Solution Approach 1:
The patent divides the forbidden resource storage into two separate lists with distinct management characteristics. The first list stores reliable reject messages with long-term validity, while the second list stores unreliable reject messages with short-term validity. This segmentation enables the device to maintain both structural organization and reliable validation capability.
Solution Approach 2:
The patent introduces dynamic validity periods for different types of forbidden resources. Reliable reject messages maintain their status until explicitly removed or until specific trigger events occur, while unreliable reject messages are automatically removed after a predetermined time period. This dynamic approach allows the system to adapt to the varying trustworthiness of different message sources.
3Quantity of substance
If the mobile device stores unreliable forbidden resources for extended periods, then the coverage of resource tracking is improved, but the signaling load and processing overhead increase
Solution Approach 1:
The patent implements periodic action through automatic removal of unreliable forbidden resources after predetermined time periods. This periodic cleanup mechanism ensures that the device maintains comprehensive tracking coverage for reliable resources while systematically reducing the burden of unreliable resources, thereby maintaining signaling efficiency.
Solution Approach 2:
The patent applies different temporal characteristics to different types of forbidden resources. Reliable resources are maintained until trigger events occur, providing comprehensive coverage, while unreliable resources are automatically removed after short time periods, reducing processing overhead and signaling load.
4Object-affected harmful factors
If the mobile device removes all forbidden resources on power-off, then the security against persistent attacks is improved, but the loss of legitimate forbidden resource information occurs
Solution Approach 1:
The patent segments forbidden resource storage into volatile and non-volatile components. The first list of reliable forbidden resources is stored in non-volatile memory, persisting across device reboots to prevent persistent attacks. The second list of unreliable resources is stored in volatile memory, being cleared on power-off to eliminate temporary security threats. This segmentation resolves the contradiction between security and information retention.
Solution Approach 2:
The patent applies different persistence characteristics to different types of forbidden resources based on their reliability. Reliable resources are given persistent storage to maintain long-term security posture, while unreliable resources are given temporary storage to be discarded after use. This local quality differentiation ensures both security against persistent attacks and retention of legitimate information.
Data Source
AI summary
Aspects of the disclosure provide a method for handling reject in wireless communication. The method includes receiving, at an electronic device, a reject message indicative of a forbidden resource of a service provider network to use by the electronic device for wireless communication, determining a reliability attribute of the reject message, storing the forbidden resource associated with the reliability attribute, and maintaining the stored forbidden resource based on the reliability attribute.