UE Capability Coordination Across Heterogeneous Radio Access Networks
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Solution Overview
Problem
Current methods for resource coordination in wireless cellular networks, especially with carrier aggregation across different radio access networks, face challenges such as high overhead in interface definitions and complexity in managing multiple network interfaces, particularly when integrating technologies like 4G, 5G, WiMAX, and Wi-Fi.
Innovation Solution
A method where user equipment (UE) communicates with both a primary and secondary base node across different radio access networks, sending capability messages to allocate and reallocate resources efficiently, allowing the UE to control the setup and management of communication links without direct interaction between base nodes, thereby reducing network traffic and interface complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is implemented across multiple radio access networks (4G, 5G, WiMAX, Wi-Fi), then data throughput capability is improved, but network interface complexity and overhead increase enormously
Solution Approach 1:
The patent introduces a coordination entity that acts as an intermediary to manage resource allocation across multiple base nodes from different radio access networks. This coordinator centralizes the control plane functions, managing capability messages and resource coordination between the UE and multiple base nodes, thereby reducing the complexity of direct multi-interface coordination without compromising the aggregated throughput capability
Solution Approach 2:
The patent segments the control plane and user plane functions by separating the coordination of capability messages from the actual data transmission paths. The coordination entity handles signaling and resource management separately from the data bearers, allowing independent optimization of control overhead and user data throughput across heterogeneous networks
2Productivity
If direct interaction between primary and secondary base nodes is implemented for resource coordination, then resource allocation efficiency is improved, but signaling overhead and transaction complexity increase
Solution Approach 1:
The coordination entity serves as a mediator that consolidates capability information from the UE and distributes appropriate capability messages to the primary and secondary base nodes. This intermediary approach reduces redundant signaling by maintaining a centralized view of UE capabilities and making coordinated allocation decisions, thereby improving resource allocation efficiency while minimizing signaling overhead compared to direct peer-to-peer base node interaction
3Manufacturing precision
If multiple capability messages are exchanged between UE and base nodes, then resource allocation accuracy is improved, but message overhead and processing time increase
Solution Approach 1:
The patent implements preliminary action by having the UE send its capability information to the coordination entity in advance, before actual resource allocation is needed. The coordination entity stores and processes this capability information, so that when resource allocation is required, the base nodes can quickly retrieve pre-processed capability data without engaging in lengthy real-time capability exchange negotiations, thereby maintaining allocation accuracy while reducing processing time
Data Source
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AI summary
The present invention relates to a method for operating a user equipment communicating in parallel by means of a primary base node and at least one secondary base node of a cellular network with a remote terminal, the cellular network comprising at least two radio access networks, the primary base node and the secondary base node being assigned to different radio access networks, the primary base node being the base node the user equipment is camping on in non-connected mode, the secondary base node being a candidate base node evaluated by at least one of the user equipment or the cellular network as suited for serving the user equipment, for setting up a communication link to the remote terminal.