DRB Integrity Protection Configuration in 5G UE
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Solution Overview
Problem
In the 5G mobile communication system, there is currently no scheme for triggering the Data Radio Bearer (DRB) integrity protection process, which can lead to DRB failures during data transmission or switching between master and secondary cells, compromising data consistency.
Innovation Solution
A method for configuring DRB integrity protection in User Equipment (UE) and network devices, involving the reception and transmission of configuration information for activating or deactivating DRB integrity protection processes, using Media Access Control (MAC) Packet Data Units (PDU) with message authentication codes, and employing timers and sequence numbers to manage the integrity protection based on specific conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DRB integrity protection process is not implemented, then device complexity is reduced, but data transmission reliability deteriorates
Solution Approach 1:
The patent applies preliminary action by configuring integrity protection parameters and activating integrity protection processes before data transmission occurs. The network device sends configuration information to the UE in advance, and the UE prepares the integrity protection process before actual data transmission, ensuring reliability is established proactively rather than reactively.
Solution Approach 2:
The patent extracts the integrity protection function as a separate, independent process from the main data transmission flow. By isolating the integrity protection process as a distinct functional module that can be independently configured and controlled, the system manages complexity while maintaining reliability.
2Reliability
If DRB integrity protection is activated, then data consistency is improved, but processing overhead increases
Solution Approach 1:
The patent implements periodic action through the use of timers that control when integrity protection is activated and deactivated. The network device configures timers that periodically enable or disable the integrity protection process based on transmission conditions, allowing the system to maintain data consistency only when necessary rather than continuously, thus reducing processing overhead.
Solution Approach 2:
The patent applies partial action by selectively activating integrity protection only for specific data transmissions or under specific conditions rather than for all transmissions. The network device can configure the UE to apply integrity protection only when certain criteria are met, reducing unnecessary processing overhead while maintaining data consistency when needed.
3Reliability
If integrity protection configuration is implemented, then DRB failure prevention is improved, but signaling overhead increases
Solution Approach 1:
The patent applies universality by designing the integrity protection configuration mechanism to serve multiple functions simultaneously. The same configuration information and control processes are used for both activating integrity protection and managing its deactivation, reducing the need for separate signaling mechanisms and thereby reducing overall signaling overhead while maintaining comprehensive DRB failure prevention.
Data Source
AI summary
A Data Radio Bearer (DRB) integrity protection configuration method, a network device and a User Equipment (UE) are provided. The DRB integrity protection configuration method includes: receiving configuration information indicating a DRB integrity protection configuration from a network device; and enabling a predetermined control process for DRB integrity protection in accordance with the configuration information. The predetermined control process is a DRB integrity protection activation process or a DRB integrity protection deactivation process.