Network Handover Control Node Using State Information
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Solution Overview
Problem
The accuracy and complexity of network handovers between cellular networks and WLANs are reduced due to the inability of user equipment (UE) to determine handover occasions without prior acquisition of cellular and WLAN states.
Innovation Solution
Acquiring and comparing state information of WLAN access points and cellular networks to generate and send handover information, allowing a control node to initiate a handover command for UE to attach to a cellular network or WLAN, ensuring a seamless transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the UE decides by itself to initiate a handover without acquiring network states, then the handover initiation is simple and fast, but the handover accuracy is reduced and complexity increases
Solution Approach 1:
The control node performs preliminary actions by acquiring the states of both the cellular network and WLAN before the UE initiates handover. This allows the network to determine optimal handover occasions based on actual network conditions, thereby improving handover accuracy while maintaining simple UE operation.
Solution Approach 2:
The control node acts as an intermediary between the UE and the networks. It acquires network states, determines handover occasions, and sends handover instructions to the UE. This mediator approach resolves the contradiction by centralizing the complex state acquisition and decision-making functions in the network while keeping the UE's handover initiation simple.
2Speed
If the UE decides by itself to initiate a handover without acquiring network states, then the handover process is quick to start, but the system complexity increases due to inability to determine handover occasions
Solution Approach 1:
The control node performs preliminary state acquisition of both cellular network and WLAN before handover initiation. This preliminary action enables the network to quickly determine handover occasions based on pre-acquired state information, reducing overall handover complexity while maintaining fast initiation speed.
Solution Approach 2:
The control node serves as an intermediary that centralizes the complex state acquisition and handover decision-making processes. By moving these complex functions from the UE to the network side, the UE's handover initiation remains simple and fast, while the overall system complexity is managed centrally rather than distributed across multiple devices.
Data Source
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AI summary
Embodiments of the present invention provide a network handover method, apparatus, and device and relate to the communications field. The method is used in a control node and includes: acquiring first state information of a WLAN AP that UE accesses and second state information of a cellular network corresponding to a location of the UE; if it is determined that the first state information and the second state information meet a preset first handover condition, generating first handover information; and sending the first handover information to a handover node, so that the handover node sends, to the UE, a first handover command that is generated according to the first handover information, and the UE attaches to the cellular network indicated by the first handover command, receives an IP address of the UE in the cellular network, and implements a handover from a WLAN to the cellular network. The control apparatus includes: a first acquiring module, a first generating module, and a first sending module. According to the present invention, accuracy of a network handover is improved, and complexity of the network handover is also reduced.