Base Station Type Identification via ECGI Bit Patterns
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Solution Overview
Problem
Current LTE systems inaccurately identify base station types due to treating newly discovered neighbor cells as macro base stations by default, leading to errors in eNB ID identification.
Innovation Solution
A method where network devices and terminals determine and transmit base station identities using E-UTRAN Cell Global Identifiers, with specific bit positions indicating base station types, ensuring accurate recognition by filling remaining bits with '1' for home base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the base station controlling a newly discovered neighbor cell is treated as a macro base station by default, then the identification process is simplified, but the base station type identification accuracy deteriorates
Solution Approach 1:
The patent uses bit pattern changes in the ECGI to indicate base station type. Specifically, when the last 8 bits of the ECGI are all '1's, it indicates a home base station; otherwise, it indicates a macro base station. This binary distinction allows the network device to accurately identify base station type without complex classification logic, resolving the contradiction between identification simplicity and accuracy.
2Loss of information
If the eNB ID occupies integral 28 bits for home base stations, then the base station identity representation is complete, but the bit position alignment with macro base stations deteriorates
Solution Approach 1:
The patent extracts the base station type indication from the traditional eNB ID structure by using the pattern of the last 8 bits of the ECGI. Instead of modifying the eNB ID field itself, the solution extracts type information from the cell ID portion, specifically when all last 8 bits are '1's. This extraction approach maintains bit position alignment while preserving complete base station identity information.
3Measurement precision
If the last 8 bits of ECGI are used for home base station identification, then the base station type differentiation is achieved, but the traditional ECGI structure is modified
Solution Approach 1:
The patent makes the last 8 bits of the ECGI serve dual purposes: they function as part of the cell ID for macro base stations and as a base station type indicator for home base stations when all bits are '1's. This multi-functional use of the same bit field achieves accurate base station type differentiation without adding separate identification fields, thereby avoiding increased ECGI structure complexity.
Data Source
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AI summary
A transmitting and a receiving method and a device are provided in the present invention. The method includes: determining, by a terminal, a base station type of a base station controlling a neighboring cell of a serving cell; and transmitting, by the terminal, information indicating the base station type to a network device, so that the network device determines the base station type according to the information indicating the base station type. According to embodiments of the present invention, the accurate recognization of the base station type is realized