Distributed Base Station Microwave Signal Return
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Solution Overview
Problem
Conventional microwave return systems for base stations involve complex signal processing, leading to high hardware costs, large board sizes, high power consumption, and high maintenance costs due to the need for multiple analog-to-digital and digital-to-analog conversions.
Innovation Solution
The method involves directly modulating and demodulating base station analog signals using spread spectrum techniques, reducing the complexity of the signal returning process by eliminating the need for multiple conversions and simplifying hardware requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If conventional microwave return systems are used with multiple analog-to-digital and digital-to-analog conversions, then signal processing capability is improved, but hardware cost increases
Solution Approach 1:
The patent extracts and eliminates the unnecessary multiple analog-to-digital and digital-to-analog conversion stages from the conventional microwave return system. By directly transmitting and receiving analog signals through the microwave link, the system removes the complex conversion hardware while maintaining signal processing capability through simplified analog processing at the baseband unit.
Solution Approach 2:
The patent replaces the mechanical/electronic conversion system (multiple ADC/DAC stages) with a direct analog transmission system. The analog signal is directly modulated onto the microwave carrier and transmitted without intermediate digital conversions, substituting the complex conversion mechanism with a simpler analog processing approach.
2Difficulty of detecting and measuring
If conventional microwave return systems are used with multiple analog-to-digital and digital-to-analog conversions, then signal processing capability is improved, but board size increases
Solution Approach 1:
The patent extracts and removes the large conversion hardware (multiple ADC/DAC modules and associated processing units) from the system architecture. By eliminating these conversion stages, the physical board size required for the microwave return system is dramatically reduced while maintaining essential signal processing capabilities through analog methods.
3Difficulty of detecting and measuring
If conventional microwave return systems are used with multiple analog-to-digital and digital-to-analog conversions, then signal processing capability is improved, but power consumption increases
Solution Approach 1:
The patent replaces the high-power consumption digital conversion system with a low-power analog processing system. By eliminating the energy-intensive ADC/DAC conversion stages and associated digital processing hardware, the system achieves signal processing capability through much more power-efficient analog methods.
4Difficulty of detecting and measuring
If conventional microwave return systems are used with multiple analog-to-digital and digital-to-analog conversions, then signal processing capability is improved, but maintenance cost increases
Solution Approach 1:
The patent extracts and removes the complex conversion hardware that requires maintenance from the system. By eliminating the multiple ADC/DAC modules and their associated control circuits, the system reduces the number of potential failure points and simplifies maintenance requirements while preserving signal processing functionality through analog processing.
5Productivity
If wireless microwave return is used for base station deployment, then deployment speed is improved, but system complexity increases
Solution Approach 1:
The patent replaces the complex digital conversion and processing system with a simpler analog transmission system. This substitution maintains the deployment speed advantage of wireless microwave return while reducing system complexity by eliminating the intricate ADC/DAC conversion infrastructure.
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 significantly reduces hardware costs, board size, and power consumption while overcoming issues of cellular frequency spectrum occupation and noise accumulation, simplifying the signal returning process and enhancing system efficiency.
Implementation Method 1
the first return unit is configured to perform spread spectrum analog modulation on the base station uplink analog signal of the first bandwidth generated by the radio frequency processing unit, to obtain a base station uplink analog signal of a second bandwidth
Data Source
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AI summary
Embodiments of the present invention relate to a method for returning a base station signal and a base station for implementing the method. The base station provided in the embodiments of the present invention includes a first return unit located in a radio frequency system and a second return unit located in a baseband processing system. The first return unit is configured to perform analog modulation on a base station uplink analog signal of a first bandwidth to obtain a base station uplink analog signal of a second bandwidth, and send the uplink analog signal of the second bandwidth to the second return unit, where the second bandwidth is larger than the first bandwidth. The second return unit is configured to receive the base station uplink analog signal of the second bandwidth, demodulate the base station uplink analog signal of the second bandwidth to obtain the uplink analog signal of the first bandwidth, where after undergoing baseband processing, the uplink analog signal of the first bandwidth is sent to a core network.