Multi-Connectivity Setup via Common Central Control Node
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Solution Overview
Problem
Existing communication systems face challenges in achieving zero handover latency during multi-connectivity setups in 5G small cell networks, leading to increased signaling overhead and delayed introduction of multi-connectivity due to the need for separate connection setups with each cell.
Innovation Solution
A method and system that allows user equipment to establish multiple radio connections through a common central control node, reducing signaling overhead by converging multi-connection setups into a single interface management process and enabling simultaneous connectivity with multiple cells from the outset, using a shared logical cell ID to coordinate connections across cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate connection setups are performed with each cell in multi-connectivity, then connectivity with multiple cells is achieved, but signaling overhead increases and handover latency increases
Solution Approach 1:
The patent performs measurement and selection of candidate cells in advance before handover is needed. The UE measures multiple cells, identifies candidate cells meeting criteria, and prepares connection information beforehand, so that when handover is triggered, the connection can be established immediately without delay for measurement or cell selection during the handover process itself
Solution Approach 2:
The patent merges multiple separate connection setup procedures into a single unified handover process. Instead of establishing connections with each cell separately, the network coordinates a simultaneous multi-connectivity handover where the UE connects to multiple cells in one coordinated action, reducing signaling overhead and handover latency
2Reliability
If separate connection setups are performed with each cell in multi-connectivity, then connectivity with multiple cells is achieved, but signaling overhead increases
Solution Approach 1:
The patent merges multiple separate connection setup procedures into a single unified handover process. Instead of establishing connections with each cell separately, the network coordinates a simultaneous multi-connectivity handover where the UE connects to multiple cells in one coordinated action, reducing signaling overhead and handover latency
3Adaptability or versatility
If multi-connectivity is introduced after initial connection setup, then connectivity flexibility is improved, but handover delay increases
Solution Approach 1:
The patent performs measurement and selection of candidate cells in advance before handover is needed. The UE measures multiple cells, identifies candidate cells meeting criteria, and prepares connection information beforehand, so that when handover is triggered, the connection can be established immediately without delay for measurement or cell selection during the handover process itself
Data Source
AI summary
The present invention provides a connection setup method, the corresponding user equipment, common central control node and communication system. A connection setup method performed by a user device, comprising: acquiring information transmitted by a plurality of cells; determining a plurality of candidate cells according to the information transmitted by the plurality of cells, sending a common connection setup request for the plurality of candidate cells to a common central control node, the common central control node corresponding to each of the plurality of candidate cells; receiving a common connection setup message for a plurality of connecting cells transmitted by the common central control node, the plurality of connecting cells being determined from the plurality of candidate cells by the common central control node, so that the user equipment establishes multiple radio connections through each of the plurality of connecting cells.