Secondary Node Reporting for Redundant Session Establishment
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Solution Overview
Problem
In dual-connectivity and multi-connectivity architectures for 5G wireless communication, the master node is unaware of the number of distributed units in secondary nodes, limiting the establishment of redundant sessions to only one user plane path.
Innovation Solution
The method involves generating and transmitting redundant user plane resource information from secondary nodes to master nodes, allowing the master node to request and establish redundant sessions in accordance with the available resources, thereby enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the master node is agnostic to the number of distributed units in secondary nodes, then the system architecture remains simple, but only one redundant session can be established on the secondary node
Solution Approach 1:
The secondary node performs preliminary action by determining the number of its distributed units and proactively reporting this information to the master node before redundant session establishment. This allows the master node to make informed decisions about session configuration without needing real-time awareness of the distributed unit architecture, resolving the contradiction between reliability improvement and system complexity.
Solution Approach 2:
The secondary node acts as an intermediary between the distributed units and the master node. It aggregates the distributed unit information and presents it to the master node in a simplified form, enabling the master node to configure multiple redundant sessions without directly managing the complexity of distributed unit configurations.
2Reliability
If multiple redundant sessions are established on secondary nodes, then data transmission reliability improves, but the master node must be aware of distributed unit configurations
Solution Approach 1:
The secondary node determines the number of distributed units and reports this information to the master node in advance. This preliminary action enables the master node to configure multiple redundant sessions based on reported information rather than direct architectural awareness, improving data transmission reliability while maintaining configuration simplicity.
Solution Approach 2:
The secondary node provides feedback to the master node about the number of available distributed units. This feedback mechanism allows the master node to dynamically configure the appropriate number of redundant sessions based on actual resource availability, ensuring both high reliability and efficient resource utilization without increasing master node complexity.
Data Source
AI summary
Provided are a redundant session establishment method and apparatus, a radio bearer establishment method and apparatus, a node, a terminal and a medium. The redundant session establishment method includes: generating redundant user plane resource information, and transmitting the redundant user plane resource information to a master node; and establishing a redundant session corresponding to a redundant session request in a redundant user plane resource according to the redundant session request from the master node, where the redundant session request is a request generated by the master node according to the redundant user plane resource information.