Base Station Interference Control via Frequency Grouping
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, identifying and managing interference between base stations is challenging due to the high frequency band and long propagation distances, which affects communication quality and requires effective methods to schedule signal transmission and detect interference sources.
Innovation Solution
The proposed solution involves a method and apparatus where base stations identify and transmit specific sequences for interference measurement, using information from a management device to schedule signal transmission and detect interference, allowing for the identification of aggressor base stations and subsequent interference mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base stations transmit signals in high frequency bands to achieve high data rates, then data transmission capability is improved, but path loss increases and propagation distance is reduced
Solution Approach 1:
The system segments base stations into different groups based on their operating frequencies. This segmentation allows for targeted interference management where base stations in the same frequency group can identify and coordinate with each other to mitigate interference, while maintaining the high data transmission capability of mmWave frequencies.
Solution Approach 2:
A management device acts as an intermediary to facilitate interference measurement and coordination between base stations. The management device receives interference measurement results from base stations and enables coordinated frequency resource allocation, allowing base stations to achieve better propagation characteristics without sacrificing data transmission capability.
2Length of stationary object
If base stations use beamforming and massive MIMO techniques to extend propagation distance, then propagation distance is improved, but system complexity increases
Solution Approach 1:
The interference measurement sequence serves multiple functions: it is used for both normal communication purposes and for interference measurement between base stations. This multi-functionality reduces the need for separate dedicated measurement signals, thereby extending propagation distance through beamforming and massive MIMO without proportionally increasing system complexity.
Solution Approach 2:
Base stations autonomously perform interference measurement by detecting sequences transmitted by other base stations and reporting results to the management device. This self-service mechanism eliminates the need for complex centralized interference management, allowing the system to leverage beamforming and massive MIMO for extended propagation while keeping complexity manageable through distributed autonomous operation.
3Productivity
If base stations operate in ultra-dense networks to satisfy growing data traffic demand, then network capacity is improved, but interference between base stations increases
Solution Approach 1:
The system implements a feedback mechanism where base stations measure interference from other base stations using dedicated sequences, report the measurement results to a management device, and receive coordinated frequency resource allocations. This feedback loop enables ultra-dense networks to achieve high capacity while actively managing and reducing interference through continuous measurement and coordination.
Solution Approach 2:
The system performs preliminary interference measurement and coordination before data transmission occurs. Base stations identify potential interferers and coordinate frequency resources in advance, allowing ultra-dense networks to maintain high capacity while preventing interference issues before they affect data transmission performance.
4Productivity
If base stations implement advanced access technologies like NOMA and SCMA to increase network capacity, then network capacity is improved, but difficulty of detecting and measuring interference increases
Solution Approach 1:
The system extracts interference measurement functionality from the complex advanced access technologies like NOMA and SCMA by using dedicated interference measurement sequences. These specialized sequences are specifically designed for interference detection purposes, allowing base stations to measure interference accurately even in ultra-dense networks employing advanced access technologies, thereby maintaining high capacity while reducing measurement difficulty.
Data Source
AI summary
The present disclosure relates to a 5th (5G) generation or pre-5G communication system for supporting a higher data transmission rate beyond a 4th (4G) generation communication system such as long term evolution (LTE). An operating method of a base station in a wireless communication system may include identifying a resource for transmitting at least one sequence for interference measurement of another base station, based on information received from a management device, and transmitting the at least one sequence through the resource, the information received from the management device may include information of the at least one sequence and the resource, and the information of the at least one sequence and the resource may be generated based on a grouping result of base stations based on an operating frequency.