Secondary RAN Addition in Mobile Systems
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Solution Overview
Problem
In mobile communication systems, the existing handover, location registration, and radio connection reestablishment procedures are inefficient, leading to prolonged delays and resource wastage, particularly when the UE interacts with multiple radio access points and experiences connection degradation or failures.
Innovation Solution
The proposed method involves transmitting a new location registration request only after the radio connection is completely released, or reusing the existing radio connection for registration, thereby avoiding unnecessary connection releases and reducing delay times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal transmits a new location registration request immediately after receiving a reject message, then the location registration can be attempted faster, but the radio connection may not be fully released causing resource conflicts and registration failure
Solution Approach 1:
The terminal waits for the radio connection to be completely released before transmitting a new location registration request. This preliminary waiting action ensures that the network resources are fully freed and ready for the next registration attempt, preventing resource conflicts and improving registration success rate while maintaining reasonable timing
Solution Approach 2:
The terminal monitors the radio connection release status as feedback from the network before proceeding with the next location registration request. This feedback mechanism ensures that the terminal only transmits when the network is ready to accept the request, coordinating timing between terminal and network resources
2Reliability
If the terminal waits for complete radio connection release before transmitting new location registration request, then resource conflicts are avoided, but the registration delay increases
Solution Approach 1:
The terminal dynamically adjusts its transmission timing based on the actual radio connection release status. Rather than using a fixed waiting period, the terminal monitors and responds to the dynamic state of the radio connection, transmitting the new location registration request as soon as the release is complete, optimizing both reliability and timing
3Productivity
If the radio connection is maintained during location registration, then resource usage is efficient, but connection conflicts occur causing registration failures
Solution Approach 1:
The terminal extracts and separates the location registration transmission from the existing radio connection context. By waiting for the radio connection to be completely released before initiating a new registration request, the terminal ensures that the registration transmission occurs in a clean resource state, eliminating conflicts while maintaining overall resource efficiency through coordinated timing
Data Source
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AI summary
A method of a primary radio access point for adding a secondary radio access point in a communication system, the method comprising: transmitting a secondary radio access point addition request message including a first identifier allocated by the primary radio access point for identifying a terminal by the primary radio access point, security capabilities of the terminal, and an aggregated maximum bit rate, AMBR, for the terminal to be used at the secondary radio access point to the secondary radio access point; and receiving a secondary radio access point addition acknowledge message including a second identifier allocated by the secondary radio access point for identifying the terminal by the secondary radio access point from the secondary radio access point, if secondary radio access point addition is admitted by the secondary radio access point.