Access Handover via Beam Measurement Configuration
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Solution Overview
Problem
Current mobile communication systems face instability in access and handover processes due to challenges in measuring narrow beams for neighboring cells, leading to poor mobility measurement and handover stability, especially with high-frequency and massive antenna techniques.
Innovation Solution
A method where a source access device requests and configures measurement reference signals for a mobile terminal to assess target access devices, allowing for improved beam measurement and handover decision-making based on received measurement results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the narrow beam is used for data transmission, then the signal quality is improved, but the mobility measurement capability deteriorates because the narrow beam cannot be measured for neighboring cells before access
Solution Approach 1:
The patent applies preliminary action by enabling the UE to measure narrow beams of neighboring cells in advance through the measurement object configuration, before actual access occurs. The network configures measurement objects that include narrow beam information, allowing the UE to perform measurements proactively and report them for handover decisions.
Solution Approach 2:
The patent introduces an intermediary mechanism where the network side device (gNodeB) acts as a mediator between the UE and neighboring cell narrow beams. The network configures measurement objects that bridge the gap, allowing the UE to measure narrow beams of neighboring cells without directly accessing them, thus enabling indirect measurement capability.
2Difficulty of detecting and measuring
If the wide beam is used for neighboring cell measurement, then the measurement capability is improved, but the data transmission performance deteriorates because wide beams have different effects compared to narrow beams
Solution Approach 1:
The patent applies segmentation by separating the measurement function into two independent parts: wide beam measurement for neighboring cell detection and narrow beam measurement for data transmission quality assessment. The network configures separate measurement objects for each function, allowing both to operate simultaneously without interference.
Solution Approach 2:
The patent implements multi-functionality by enabling the measurement system to serve multiple purposes through a unified configuration mechanism. The same measurement object configuration framework supports both wide beam measurements (for initial detection) and narrow beam measurements (for quality assessment), making the system versatile and efficient.
3Ease of operation
If the measurement configuration is simplified, then the ease of operation is improved, but the measurement accuracy for both wide and narrow beams deteriorates
Solution Approach 1:
The patent applies dynamics by implementing a flexible measurement configuration system that can adapt to different measurement needs. The network dynamically selects and configures appropriate measurement objects (wide beam, narrow beam, or both) based on the specific measurement scenario, handover conditions, and network policies, optimizing the balance between simplicity and accuracy.
Data Source
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AI summary
An access and handover method, a network side device and a mobile terminal are provided. The method includes: transmitting a measurement reference signal request message to at least one target access device when the mobile terminal meets a predetermined neighboring cell measurement condition; receiving a measurement reference signal response message from the at least one target access device, the measurement reference signal response message including measurement signal information; transmitting a first measurement configuration parameter to the mobile terminal in accordance with the measurement signal information; receiving first measurement result data from the mobile terminal; and determining a to-be-handed over access device in accordance with the first measurement result data, and transmitting a handover request to the to-be-handed over access device. Through the interaction between the source access device and the target access device, the source access device configures the beam measurement on the target access device for the mobile terminal, and determines the to-be-handed over access device in accordance with the beam measurement result about the target access device. As a result, it is able to improve the access and handover stability of the mobile terminal.