Auxiliary Base Station Frequency Conversion for Wireless Capacity
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Solution Overview
Problem
Current wireless communication systems face challenges in managing exponentially growing data traffic with limited frequency bands, particularly in providing high-speed links using both millimeter wave and sub-7 GHz spectrum efficiently, especially in supporting a large number of sectors and antenna chains.
Innovation Solution
The implementation of auxiliary base stations that perform frequency conversion of downlink and uplink signals between different frequency bands, allowing for the same frequency to be used across multiple sectors and antenna chains, thereby efficiently utilizing higher millimeter wave frequencies for carrying signals from main base stations to communication devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher millimeter wave frequencies are used for wireless communications, then data transmission capacity and speed are improved, but the number of available frequency bands is limited and device complexity increases
Solution Approach 1:
The system segments the network into main base stations and auxiliary base stations. Auxiliary base stations handle frequency conversion and signal transmission, while main base stations focus on core processing. This segmentation allows the system to utilize higher frequency bands for increased capacity without requiring every device to handle the full complexity of millimeter wave management.
Solution Approach 2:
Auxiliary base stations act as intermediaries between main base stations and user equipment. They perform frequency conversion, converting signals between higher millimeter wave frequencies and lower frequencies, thereby enabling high-capacity transmission without requiring end devices to directly handle complex high-frequency signals.
2Productivity
If the same frequency is used across multiple sectors and antenna chains, then bandwidth utilization efficiency is improved, but signal interference and frequency management complexity increase
Solution Approach 1:
The patent enables the same frequency to be universally used across multiple sectors and antenna chains through auxiliary base stations. Each auxiliary base station independently performs frequency conversion, allowing the system to reuse frequencies across different spatial domains without requiring dedicated frequencies for each sector, thereby improving bandwidth utilization efficiency.
Solution Approach 2:
The system creates multiple copies of the same frequency signal across different auxiliary base stations and antenna chains. By copying and distributing identical frequency signals to multiple locations with proper spatial and temporal coordination, the system achieves efficient frequency reuse without proportionally increasing overall system complexity.
3Productivity
If auxiliary base stations perform frequency conversion, then capacity to carry high-speed data links is improved, but device complexity and infrastructure requirements increase
Solution Approach 1:
The network infrastructure is segmented into main base stations and auxiliary base stations with specialized functions. Auxiliary base stations are dedicated to frequency conversion and signal transmission, while main base stations handle core processing. This functional segmentation increases overall system capacity while distributing complexity across multiple simpler components rather than requiring one complex device.
Solution Approach 2:
Auxiliary base stations serve as intermediary devices that perform frequency conversion between higher and lower frequency bands. This intermediary function enables high-capacity data transmission through millimeter wave frequencies while the intermediaries handle the complexity of frequency management, allowing end user equipment to remain relatively simple.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the efficient use of bandwidth by allowing multiple sectors or antenna chains to share the same frequency, enhancing the capacity to carry high-speed data links across a wide area, thereby addressing the capacity challenges in next-generation wireless networks.
Implementation Method 1
The auxiliary base station may receive first millimeter wave downlink signals from the main base station. The auxiliary base station may convert the first millimeter wave downlink signals to second downlink signals having a lower frequency than the first millimeter wave downlink signals
Implementation Method 2
The auxiliary base station may receive uplink signals from communication devices. The auxiliary base station may convert the uplink signals to second millimeter wave uplink signals
Data Source
AI summary
A method of wireless communication includes receiving a plurality of first downlink signals at a first radio base station, where the plurality of first downlink signals each has a different frequency. The method further includes down-converting the plurality of first downlink signals to a plurality of second downlink signals, where the plurality of second downlink signals have a same frequency. The method also includes transmitting the plurality of second downlink signals to associated user equipments (UEs).