Handover Signaling via Band Combination Indicators
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in handover processes due to inadequate signaling methods for coordinating user equipment (UE) capabilities between source and target base stations, leading to potential signal degradation and connectivity issues during handover.
Innovation Solution
The implementation of enhanced signaling techniques that allow UE to transmit band combination indicators to source base stations, enabling the allocation of capabilities between source and target base stations during handover, ensuring seamless communication by maintaining dual connectivity and reducing handover interruption time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional handover signaling methods are used, then the handover process is simpler to implement, but the reliability of handover and connectivity during handover deteriorates
Solution Approach 1:
The UE transmits band combination indicators to the source base station before handover execution. The source base station uses this information to prepare and transmit appropriate source and target base station configurations to the UE in advance, ensuring seamless handover execution without connectivity interruption.
Solution Approach 2:
The source base station acts as an intermediary that receives band combination indicators from the UE, determines appropriate configurations, transmits these configurations to both the UE and the target base station, and coordinates the handover process to ensure reliable connectivity during transition.
2Reliability
If capability allocation between source and target base stations is not optimized, then the signaling process is simpler, but signal quality and connectivity during handover deteriorates
Solution Approach 1:
The system allocates different band combinations to source and target base stations based on UE capabilities and local signal conditions. The UE receives a source base station configuration with first band parameters for current connection and a target base station configuration with second band parameters for handover, optimizing connectivity for each specific base station relationship.
Solution Approach 2:
The UE transmits band combination indicators that trigger the source base station to determine and transmit optimized frequency band parameters for both source and target base stations. This dynamic parameter adjustment ensures optimal signal quality and connectivity during handover based on current network conditions and UE capabilities.
3Loss of time
If dual connectivity during handover is implemented, then data loss and latency are reduced, but the device complexity and processing requirements increase
Solution Approach 1:
The UE maintains connection with the source base station while simultaneously receiving and preparing configurations for the target base station. The source base station transmits both source and target base station configurations before handover execution, allowing the UE to prepare dual connectivity in advance and execute handover without interruption.
Data Source
AI summary
Methods, systems, and devices for wireless communications and capability signaling for enhanced handover processes are described. A user equipment (UE) may transmit, to a source base station, a band combination indicator to indicate at least one band combination supported by the UE. The source base station may transmit a source base station configuration and at least one band combination supported by the UE to a target base station for use during a handover procedure. The target base station may then transmit to the source base station, a target base station configuration to use in the handover procedure. The source base station may transmit to the UE, both base station configurations to be applied during the handover procedure which may include a number of band combinations. The UE may communicate during handover execution with both base stations using at least one band combination indicated in the received base station configurations.