Wireless Communication System Control Plane Separation
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Solution Overview
Problem
In 5G Non-Terrestrial Networks (NTN), high transmission delay and network instability arise due to complex signaling interactions and fast topology changes, particularly when base stations and core network functions are distributed between ground and satellite platforms.
Innovation Solution
A wireless communication system architecture is introduced that separates the control plane and user plane into distinct clusters, with each connected to a terminal via separate interfaces, allowing for simplified signaling interactions and improved network stability through radio frequency units in both terrestrial and non-terrestrial environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signaling interactions are implemented in traditional NTN architectures (transparent forwarding or regenerative), then network coverage is improved, but transmission delay increases and network stability deteriorates
Solution Approach 1:
The patent segments the core network into separate control plane unit clusters and user plane unit clusters. The control plane cluster handles signaling interactions while the user plane cluster handles data transmission. This segmentation allows independent optimization of each plane, reducing the complexity of signaling interactions and thereby reducing transmission delay while maintaining network coverage.
Solution Approach 2:
The patent introduces a unified interface between the terminal and the core network that mediates both control plane and user plane communications. This unified interface simplifies the signaling interaction process by providing a standardized communication path, reducing the number of intermediate processing steps and thereby reducing transmission delay.
2Area of stationary object
If signaling interactions are implemented in traditional NTN architectures, then network coverage is improved, but network stability deteriorates
Solution Approach 1:
By separating the control plane and user plane into distinct unit clusters, the patent isolates signaling interactions to the control plane cluster only. This segmentation prevents user data transmission issues from affecting control signaling stability, thereby improving network stability while maintaining the signaling interactions needed for network coverage.
Solution Approach 2:
The patent extracts the control plane functions from the user plane functions and places them in a dedicated control plane unit cluster. This extraction allows the control plane to operate independently with optimized signaling protocols, improving network stability by eliminating interference from user plane variations and fast topology changes.
3Device complexity
If control plane and user plane are integrated in the same cluster, then device complexity is reduced, but transmission delay increases
Solution Approach 1:
The patent segments the core network into control plane unit clusters and user plane unit clusters that can be deployed independently. While this increases architectural granularity, each cluster has simplified internal structure with dedicated functions, reducing the complexity of signaling paths and data paths separately, thereby reducing transmission delay despite the segmented architecture.
4Reliability
If traditional core network architecture is used in NTN, then network functionality is maintained, but resource optimization is limited
Solution Approach 1:
The control plane unit cluster and user plane unit cluster are designed as universal modules that can be deployed in various NTN scenarios (transparent forwarding, regenerative, LEO, GEO, MEO). This multi-functionality allows the same architectural pattern to optimize resources across different network configurations while maintaining all necessary network functionalities.
Solution Approach 2:
The patent enables dynamic allocation and deployment of control plane and user plane unit clusters based on network conditions and service requirements. This dynamic architecture allows resources to be optimized in real-time for different scenarios while maintaining network functionality, improving productivity through adaptive resource management.
Data Source
AI summary
The present disclosure discloses a wireless communication method, a terminal, and a network side device. The wireless communication method is applied in a terminal and includes: transmitting, via a first interface with a control plane unit cluster in a wireless communication system, a control plane message with the control plane unit cluster; and transmitting, via a second interface with a user plane unit cluster in the wireless communication system, user data with the user plane unit cluster. The wireless communication system includes a radio frequency unit and a core network cluster, and the core network cluster includes the control plane unit cluster and the user plane unit cluster.