Small Cell Reconfiguration via Macro Cell Mediator
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Solution Overview
Problem
In mobile communication systems, small cell base stations face challenges in efficiently reconfiguring their operations due to a lack of detailed system variables and operating mechanisms suitable for small-sized service regions, leading to issues like frequent handover failures and mismatched reconfiguration information between small cell base stations and User Equipment (UE).
Innovation Solution
A method and apparatus for effectively transmitting reconfiguration information in a mobile communication system, where a small cell base station obtains and generates reconfiguration information based on macro cell configuration data, and transmits it to the macro cell base station for distribution to User Equipment (UE), ensuring synchronized reconfiguration across both entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If small cell base station uses independent reconfiguration mechanism, then reconfiguration speed is improved, but reconfiguration accuracy deteriorates due to lack of macro cell configuration synchronization
Solution Approach 1:
The patent introduces the macro cell base station as an intermediary that generates and distributes reconfiguration information to both the small cell base station and the UE. This mediator ensures that all entities receive consistent reconfiguration parameters, resolving the accuracy issue while maintaining the speed benefit of distributed reconfiguration.
Solution Approach 2:
The macro cell base station performs preliminary generation of reconfiguration information before distributing it to small cell base stations and UEs. This advance preparation ensures that when reconfiguration is needed, all entities already have the correct configuration data, achieving both speed and accuracy.
2Manufacturing precision
If small cell base station obtains macro cell configuration information frequently, then reconfiguration accuracy is improved, but communication overhead increases
Solution Approach 1:
The patent extracts only the necessary reconfiguration parameters from macro cell configuration information that are specific to small cell operations. Instead of transmitting complete macro cell configurations, only the relevant subset of parameters is communicated, reducing overhead while maintaining accuracy.
Solution Approach 2:
The system changes the parameter representation by generating reconfiguration information as compact parameter sets rather than full configuration messages. This parameter optimization reduces the amount of data that needs to be transmitted between base stations and UEs.
3Device complexity
If small cell base station generates reconfiguration information independently, then device complexity is reduced, but reliability deteriorates due to information mismatch
Solution Approach 1:
The macro cell base station serves as a trusted intermediary that generates authoritative reconfiguration information. Small cell base stations maintain reduced complexity by relying on this centralized generation mechanism, ensuring reliability through consistent information sources while keeping individual base station complexity low.
Solution Approach 2:
The macro cell base station performs multiple functions: it acts as the primary controller, generates reconfiguration information, and distributes it to all small cell base stations. This universal role simplifies the architecture by consolidating complex functions in one entity while enabling simple small cell base stations to operate reliably.
Data Source
AI summary
A method and an apparatus, in a mobile communication system, for effectively providing configuration information about a small cell that has a small cell service region are provided. The method for transmitting reconfiguration information of a small cell base station in a mobile communication system includes: when deciding to reconfigure a small cell, obtaining the latest macro cell configuration information from a macro cell base station; generating reconfiguration information about the small cell on the basis of the obtained macro cell configuration information; and transmitting, to the macro cell base station, the regenerated reconfiguration information so that the macro cell base station can transmit the reconfiguration information to User Equipment (UE).