Terminal Identifier Update Mechanism for Reliable Data Transmission
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Solution Overview
Problem
In 4G mobile communication, the inability to uniquely identify terminals using 24-bit character strings for MAC subheaders leads to identifier collisions and data loss when identifiers are not updated, affecting data transmission reliability.
Innovation Solution
A method where a first terminal acquires a new identifier and transmits indication information to a second terminal to indicate the update, allowing the second terminal to merge data carrying the old and new identifiers, ensuring reliable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the application layer updates the identifier from the first identifier to the second identifier, then the identifier can avoid collisions with other terminals, but the second terminal cannot recognize the update and treats them as different terminals, causing data loss
Solution Approach 1:
The first terminal sends indication information to the second terminal before actually updating the identifier in subsequent data transmissions. This preliminary notification allows the second terminal to prepare for the identifier change, ensuring it can correctly associate the new second identifier with the original first identifier and merge the data without loss.
2Adaptability or versatility
If the identifier is updated over time, then collisions with other terminals are avoided, but the receiving terminal cannot merge data carrying old and new identifiers
Solution Approach 1:
The first terminal provides feedback to the second terminal by sending indication information that explicitly告知 the identifier update relationship. This feedback mechanism ensures the second terminal understands that the second identifier is an update of the first identifier, enabling it to merge data correctly while maintaining identifier uniqueness over time.
Data Source
AI summary
An identifier update method includes: in the process of a first terminal sending data carrying a first identifier to a second terminal, the first terminal acquiring a second identifier, wherein the second identifier is used for updating the first identifier, and both the first identifier and the second identifier are used for identifying the first terminal; and the first terminal sending indication information to the second terminal, wherein the indication information is used for indicating that the second identifier carried in data subsequently sent by the first terminal to the second terminal is an update of the first identifier.