UE Dual Connectivity Handover Indicator
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Solution Overview
Problem
Current dual-connectivity handover methods in wireless communications often result in increased interruption times due to the lack of simultaneous communication capabilities between source and target cells, leading to inefficient handover processes.
Innovation Solution
The method involves user equipment (UE) determining its capability for simultaneous communication with both source and target cells, generating a handover indicator, and transmitting it to an access node, which then issues a handover command after verifying the UE's dual connectivity, allowing seamless handover with reduced interruption time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional handover methods are used without dual connectivity capability, then the handover process is simpler to implement, but the handover interruption time increases and communication efficiency decreases
Solution Approach 1:
The UE performs capability determination and generates the handover indicator with dual connectivity information before the actual handover execution. The access node verifies this capability in advance and prepares the handover command accordingly, ensuring that dual connectivity is established before switching cells, thereby reducing interruption time
Solution Approach 2:
The handover indicator acts as an intermediary message that carries dual connectivity capability information between the UE and the access node. This indicator enables the access node to identify UEs capable of simultaneous communication and execute optimized handover procedures for these devices
2Reliability
If dual connectivity capability is implemented, then communication efficiency and stability are enhanced, but the device complexity and implementation difficulty increase
Solution Approach 1:
The handover indicator contains specific fields indicating different aspects of dual connectivity capability (simultaneous reception, simultaneous transmission, or both). This localized differentiation allows the access node to apply appropriate handover strategies based on the UE's specific capability level without requiring complex processing for all UEs
Solution Approach 2:
The handover indicator uses parameter fields to represent dual connectivity capability, such as boolean indicators or frequency band combination parameters. These parameter changes enable the system to adapt the handover process based on the UE's capability without fundamentally changing the handover mechanism for all devices
3Measurement precision
If handover indicator with multiple fields is used to indicate dual connectivity capability, then the precision of capability indication is improved, but the information overhead and processing complexity increase
Solution Approach 1:
The handover indicator includes optional fields for different capability aspects (simultaneous reception, simultaneous transmission, or both). The access node can selectively process the relevant fields based on the UE's actual capability, avoiding unnecessary information processing while maintaining precise indication where needed
Data Source
AI summary
Methods, systems, apparatus, and computer programs, for implementing dual-connectivity handover. In one aspect, a method includes determining, by user equipment (UE), whether the UE is capable of simultaneous communication with a source cell and a target cell, generating, by the UE, a handover indicator, the handover indicator having one or more fields structuring data that indicates that the UE is capable of simultaneous communication with the source cell and the target cell, transmitting, by the UE, the handover indicator to an access node, and receiving, by the UE and from the access node based on receipt by the access node of the handover indicator, a command to perform handover.