System Information Validity Time Periods in Wireless Communication
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Solution Overview
Problem
Existing wireless communication systems face limitations in frequent system information changes due to the inherent signaling overhead associated with value tags, which restrict how often system information can be updated and read by devices.
Innovation Solution
Implementing a method where at least two different value tags are associated with distinct validity time periods, allowing user equipment to determine the validity of system information based on the received value tag, enabling more frequent updates without increasing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single value tag is used for system information with a fixed validity time period, then the signaling overhead remains manageable, but the frequency of system information updates is limited
Solution Approach 1:
The patent applies dynamics by making the validity time period variable rather than fixed. Different value tags are associated with different validity time periods, allowing the system to dynamically adjust how long system information remains valid based on the specific value tag received. This enables more frequent updates when needed without permanently increasing signaling overhead.
Solution Approach 2:
The patent changes the parameter of validity time period from a single fixed value to multiple possible values associated with different value tags. By mapping different value tags to different validity time periods, the system can flexibly control update frequency while managing signaling overhead, directly resolving the technical contradiction.
2Productivity
If more value tags are added to allow frequent system information changes, then the update frequency increases, but the signaling overhead becomes unacceptably high
Solution Approach 1:
The patent resolves this contradiction by changing the parameter structure from a single validity time to multiple validity time periods associated with different value tags. This allows the system to achieve frequent updates by selecting appropriate value tags with shorter validity periods when needed, rather than increasing the number of value tags transmitted, thus avoiding unacceptable signaling overhead.
Solution Approach 2:
The system dynamically selects which value tag to use based on the required update frequency. When frequent updates are needed, value tags with shorter validity periods are used; when updates are less frequent, value tags with longer validity periods suffice. This dynamic approach achieves high update frequency without requiring all possible value tags to be transmitted simultaneously.
Data Source
AI summary
A user equipment (14) is configured for use in a wireless communication system (10). The user equipment (14) is configured to receive system information (16) and a value tag (18) indicating a version of the system information (16). The value tag (18) is associated with a validity time period (20) for which the version of the system information (16) is deemed valid. The value tag (18) is one of multiple different possible value tags. At least two of the different possible value tags are respectively associated with different possible validity time periods.