Cell Handover Measurement Reporting for Accurate Band Decisions
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Solution Overview
Problem
Current cell handover processes in LTE communications systems often result in handover failures due to incorrect or incomplete information about neighboring cells, leading to suboptimal handover decisions and service disruptions.
Innovation Solution
A communication method and device that involve sending measurement configurations to user equipment to report cell global identifiers and band information, allowing base stations to store accurate band information and perform precise handover decisions using band priority information, thereby avoiding handover failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic neighbor relation mechanism is used to configure neighboring cells, then cell handover can be performed, but handover failure occurs due to incorrect or incomplete band information
Solution Approach 1:
The patent implements a feedback mechanism where the base station sends measurement configuration to the UE, receives measurement reports containing band information, and uses this feedback to update and refine the band information storage. This closed-loop feedback ensures that band information is continuously improved and becomes more accurate over time, directly resolving the issue of incorrect or incomplete band information leading to handover failures.
Solution Approach 2:
The patent performs preliminary action by configuring the UE to measure and report band information before handover occurs. The base station proactively requests band information through measurement configuration, and the UE prepares and reports the necessary band data in advance. This preliminary collection of accurate band information allows the base station to make informed handover decisions, preventing handover failures before they occur.
2Measurement precision
If band information is collected through measurement configuration, then handover decisions become more accurate, but communication overhead increases
Solution Approach 1:
The patent applies universality by designing the measurement configuration to serve multiple functions: it not only collects band information for handover decisions but also validates cell characteristics, determines suitable target cells, and prepares handover parameters. This multi-functional measurement configuration reduces the need for separate procedures, thereby limiting the increase in communication overhead while achieving accurate band information collection.
Data Source
AI summary
A communication method includes: sending, by a base station, a message including measurement configuration to UE, where the measurement configuration is used to request the UE to report a cell global identifier of a cell; obtaining, by the base station, a measurement report reported by the UE, where the measurement report corresponds to the measurement configuration and includes the cell global identifier of the cell and band information of the cell; and performing, by the base station, cell handover based on the band information and the cell global identifier of the cell. In this manner, the base station obtains complete and accurate band information of the cell, so that the base station can perform an accurate handover decision, thereby avoiding handover failure.