DRB Integrity Check Failure Handling in Dual Connectivity
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Solution Overview
Problem
Current wireless communication technologies, particularly in LTE and 5G systems, lack a handling mechanism for data radio bearer (DRB) integrity check failures (ICF) during data transmission or handovers, which can lead to data integrity issues and transmission reliability problems.
Innovation Solution
A method and network equipment configuration that acquire ICF events and perform predetermined handling operations, such as releasing DRBs or reconfiguring connections, to ensure data integrity, involving active detection and passive reception modes, and feedback mechanisms between master and secondary network nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dual connectivity scenario is implemented to achieve high data rate and low latency, then data transmission performance is improved, but integrity check failure risk increases
Solution Approach 1:
The patent segments the integrity check process by introducing separate indication information for different DRB types (SCG bearer, MCG bearer, split bearer). Each bearer type can be independently monitored and handled, allowing targeted integrity protection without compromising overall transmission performance.
Solution Approach 2:
The patent implements a feedback mechanism where the terminal detects ICF events and sends indication information to the network equipment. This feedback loop enables the network to respond to integrity failures and adjust configurations accordingly, maintaining reliability while preserving high data rates.
2Reliability
If integrity check handling mechanism is added to protect data integrity, then data transmission reliability is improved, but system complexity increases
Solution Approach 1:
The terminal performs self-detection of ICF events and autonomously generates indication information for reporting to the network. This self-service approach reduces the burden on network equipment and simplifies the overall system architecture while maintaining integrity protection.
Solution Approach 2:
The patent uses parameter-based differentiation through indication information that specifies the type of DRB affected by ICF. This allows the system to handle different bearer types with appropriate parameters without requiring fundamentally different processing mechanisms, thereby controlling complexity.
3Reliability
If ICF detection and handling is implemented, then transmission reliability is improved, but processing time increases
Solution Approach 1:
The system performs integrity checks continuously as part of normal data reception processing, rather than as a separate post-processing step. The ICF detection is integrated into the existing data flow, allowing timely detection without adding significant processing delays.
Solution Approach 2:
The patent applies integrity check handling selectively based on the type of DRB and the specific ICF event detected. Not all bearers require the same level of handling, and not all ICF events trigger the same response. This localized approach reduces unnecessary processing time while maintaining reliability where needed.
Data Source
AI summary
A method for handling data radio bearer (DRB) integrity check failure (ICF), network equipment and a terminal are provided. The method includes: acquiring an ICF event of a DRB for a terminal; and performing a predetermined handling operation according to the ICF event. An intact data transmission over the DRB is achieved by acquiring the ICF event of the DRB for the terminal and further performing the predetermined handling operation for data integrity protection according to the ICF event.