Blind Handover Target Cell Selection Using Historical Records
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Solution Overview
Problem
In wireless communication networks, blind handover or redirection often results in inappropriate target cell selection due to the UE's difficulty in measuring signal qualities of adjacent cells during data reception and transmission, leading to reduced success rates and increased network resource consumption.
Innovation Solution
A blind handover or redirection method where the base station selects a target cell based on the UE's stored history records of previous successful handovers or redirections, considering the number of times and time factors, to improve target cell selection accuracy and reduce repeated processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE measures signal qualities of adjacent cells during data reception and transmission, then the target cell selection accuracy is improved, but the data transmission performance deteriorates due to the need to suspend reception and transmission during measurement intervals
Solution Approach 1:
The patent stores historical handover information and target cell selection results in advance. When blind handover is needed, the base station retrieves pre-stored historical data to quickly determine the target cell without requiring real-time signal quality measurements, thus avoiding interruption of data transmission and maintaining high throughput while achieving accurate target cell selection.
2Measurement precision
If the UE performs measurement and reporting of adjacent cell signals, then the target cell selection accuracy is improved, but the handover process time increases due to the measurement and reporting sequence
Solution Approach 1:
The base station pre-stores historical handover information including target cell selection results. When handover is needed, the base station directly retrieves the appropriate target cell from stored historical data without requiring the UE to perform measurements and send reports, significantly reducing handover process time while maintaining accurate target cell selection.
Solution Approach 2:
The patent extracts and stores only the essential historical handover information (target cell identifiers and selection results) needed for future blind handovers. This extracted historical data enables the base station to make rapid target cell decisions without requiring current signal quality measurements or UE reporting, thus accelerating the handover process.
3Speed
If blind handover or redirection is performed without measurement, then the handover process speed is improved, but the target cell selection accuracy deteriorates leading to inappropriate cell selection
Solution Approach 1:
The base station pre-stores historical handover information including successful target cell selections. When blind handover is required, the base station retrieves this pre-stored historical data to accurately determine the target cell without requiring current signal measurements, thus achieving both fast execution speed and accurate target cell selection.
Solution Approach 2:
The system uses historical feedback information from previous successful handovers to guide future blind handover decisions. The base station retrieves and applies historical target cell selection results that have been proven successful, enabling accurate target cell selection in blind handover scenarios without requiring real-time measurements.
4Reliability
If repeated blind handover attempts are made due to inappropriate cell selection, then the system tries to find a suitable cell, but network resource consumption increases
Solution Approach 1:
The base station pre-stores historical handover information including successful target cell selections. When blind handover is needed, the base station retrieves this pre-stored data to accurately determine the target cell on the first attempt, avoiding repeated failed handover attempts and thereby reducing network resource consumption while maintaining high handover success rates.
Solution Approach 2:
The system utilizes historical feedback from successful handovers to guide future decisions. By retrieving and applying proven successful target cell selections from history, the system achieves high handover success rates on first attempt, eliminating the need for repeated attempts and reducing network resource consumption.
Data Source
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AI summary
A blind handover or blind redirection method and system are provided. The method includes: when a UE needs to perform blind handover or blind redirection, it is determined whether there is a history record of handover or redirection of the UE; and when there is the history record, a target cell which the UE is about to be blindly handed over to or blindly redirected to is selected according to the history record. In the disclosure, when a UE needs to perform blind handover or blind redirection, a base station selects a target cell through a stored history record of handover or redirection that the UE performed previously, so that the accuracy of target cell selection is improved, the success rate of blind handover or blind redirection is increased, and repeated processes of performing blind handover or blind redirection are reduced, thereby saving network resources, and meanwhile the occurrence probability of a call drop event is reduced, thereby improving user experience.