MR-MC Bearer Type Switching With Multiple Split Bearers
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Solution Overview
Problem
Existing wireless communication systems, particularly in MR-MC networks, face challenges in efficiently managing radio resources and bearer types due to high signaling overhead and data loss during bearer type changes, especially when multiple network nodes are involved via non-ideal backhaul, limiting data capacity and reliability.
Innovation Solution
A method and system for handling radio resources and bearer type changes in MR-MC networks by introducing a new 'Multiple Split Bearer' or 'Triple Split Bearer' type, which includes a cross-layer mechanism to reduce signaling overhead and latency through optimized bearer configuration procedures, using PDCP, RLC, and MAC layers, and enabling quick recovery of failed access nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If bearer type change procedures are implemented in MR-MC networks with multiple network nodes, then connectivity and data capacity are improved, but signaling overhead and control plane latency increase significantly
Solution Approach 1:
The patent segments the bearer configuration process by introducing separate configuration messages for different network nodes (MN and SN). The bearer setup is divided into independent configuration steps, where each node receives specific configuration instructions tailored to its role, reducing the need for repeated comprehensive signaling across all nodes for each bearer modification.
Solution Approach 2:
The patent implements preliminary action by pre-configuring bearer parameters and establishing bearer contexts in advance at network nodes before actual data transmission begins. This allows nodes to have bearer information ready ahead of time, enabling faster bearer activation and reducing signaling overhead during runtime bearer type changes.
2Adaptability or versatility
If bearer type changes are performed frequently to optimize network performance, then adaptability and resource utilization are improved, but data loss and service interruption increase
Solution Approach 1:
The patent applies beforehand cushioning by implementing data protection mechanisms and buffer management before bearer type transitions occur. The system prepares compensation measures in advance, such as maintaining parallel bearer contexts or establishing data forwarding paths, to prevent data loss during the transition process and ensure service continuity.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of a coordinating network entity that manages bearer type transitions between multiple network nodes. This intermediary coordinates the changes, ensures synchronized updates across nodes, and maintains data integrity during transitions, preventing data loss while enabling flexible bearer type changes.
3Reliability
If multiple network nodes are connected via non-ideal backhaul to provide MR-MC service, then network coverage and reliability are improved, but synchronization and coordination complexity increase
Solution Approach 1:
The patent merges the coordination functions for multiple network nodes into a unified bearer management framework. By combining configuration management, state synchronization, and transition coordination into an integrated system, the patent reduces the complexity of managing multiple independent coordination mechanisms while maintaining reliable multi-node operation.
4Loss of time
If optimized bearer configuration procedures are implemented across multiple network layers, then control plane latency is reduced, but implementation complexity and processing requirements increase
Solution Approach 1:
The patent segments the cross-layer bearer configuration process into distinct layer-specific operations with clear interfaces between layers. Each network layer (PDCP, RLC, MAC) handles specific configuration tasks independently, reducing inter-layer dependency and processing complexity while enabling parallel execution of layer-specific operations to minimize overall latency.
Data Source
AI summary
Embodiments herein provide a method and apparatus for handling bearer type change and user plane in a wireless communication supporting multi radio multi connectivity (MR-MC). A new bearer type is introduced to benefit from the increased radio resources of an additional network node. There is a method added to handle bearer type change that is applicable to both existing bearer types and new bearer type. The method includes suspending and resuming the bearer configuration at all layers, defining actions that take place at each layer during the bearer type change. With this mechanism, signaling overhead and latency is bearer establishment is reduced.