Cell Management in Separated User Control Plane Networks
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Solution Overview
Problem
In heterogeneous network deployment scenarios, there is no effective solution for managing cells controlled by a local node when the user plane is separated from the control plane, particularly in LTE-A systems using carrier aggregation technology.
Innovation Solution
A Macro eNB notifies a local eNB to manage cells controlled by the local eNB, enabling the local eNB to receive configuration information and perform management tasks such as adding, deleting, or modifying secondary cells, and selecting or changing the primary cell, thus facilitating cell management across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user plane is separated from the control plane in heterogeneous network deployment, then data transmission continuity is improved, but cell management capability at local node is lost
Solution Approach 1:
The patent introduces a remote node as an intermediary that maintains control plane functions including cell management. The remote node receives signaling from the serving eNB and manages cells controlled by the local eNB, enabling the local eNB to focus on user plane data transmission while cell management capabilities are preserved through the intermediary remote node
2Adaptability or versatility
If frequent switching operations are performed between Macro cell and Local cell, then network coverage flexibility is improved, but data transmission interruption increases
Solution Approach 1:
The patent segments the network functions by separating user plane handling at the local eNB from control plane management at the remote node. This segmentation allows the UE to maintain a stable control plane connection while utilizing flexible user plane resources, enabling network coverage adaptation without causing transmission interruptions
3Reliability
If bearer separation is implemented between user plane and control plane, then data transmission stability is improved, but cell management solution for local node is lost
Solution Approach 1:
The remote node serves as an intermediary that handles control plane functions including cell management for cells controlled by the local eNB. This resolves the complexity issue by providing a dedicated management entity while maintaining the stability benefits of bearer separation
Data Source
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AI summary
The embodiments of the application relate to the technical field of wireless communications, especially relate to a method and device for cell management, which are used to manage the cells under the local node in the hierarchical network deployments scene of segregation of user plane and control plane. The method of the embodiments of the application includes: a user equipment receives a notification of managing cells controlled by a connected local eNB from a network side; and the user equipment manages the cells controlled by the local eNB according to the received notification.