Optical Module Wavelength Configuration for Fiber Resource Optimization
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Solution Overview
Problem
The existing radio access method for connecting Remote Radio Units (RRUs) to Base Band Units (BBUs) via optical fibers results in resource waste and inflexible RRU configuration, particularly with the increase in wavelengths due to the 5G technology, leading to high labor costs and inefficient use of optical fiber and frequency band resources.
Innovation Solution
A data transceiving method and wavelength configuration system where optical modules adjust transmission and receiving wavelengths based on control information, allowing for flexible deployment and efficient use of optical fibers by dynamically managing wavelengths through Arrayed Waveguide Gratings (AWGs) connected via a single optical fiber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple RRUs are connected to BBUs in a point-to-point manner through optical fibers, then each RRU can be independently connected, but a large number of optical fibers are consumed resulting in resource waste
Solution Approach 1:
Multiple RRUs are connected to a single BBU through a shared optical fiber link using wavelength division multiplexing technology. Multiple wavelengths are multiplexed onto one optical fiber for transmission, and demultiplexed at the BBU side to reach different BBUs, thereby reducing optical fiber consumption while maintaining connection reliability
Solution Approach 2:
A single optical fiber is made universal by enabling it to carry multiple wavelength channels simultaneously, each serving different RRU-BBU connections. This multi-functional use of the same physical medium eliminates the need for dedicated fibers for each connection
2Adaptability or versatility
If the number of wavelengths is increased to support more RRUs in 5G, then more RRUs can be connected, but manual port identification becomes more difficult increasing labor costs
Solution Approach 1:
The system implements automatic wavelength identification and configuration through feedback mechanisms. When a new RRU is added, the system automatically detects the wavelength, identifies the corresponding port, and configures the connection without manual intervention, thereby maintaining ease of operation even as the number of wavelengths increases
Solution Approach 2:
The wavelength management system performs self-configuration and self-identification. The optical modules automatically manage wavelength allocation and port mapping, eliminating the need for manual port identification and reducing labor costs associated with RRU addition and configuration
3Adaptability or versatility
If CWDM is used to accommodate more wavelengths, then more RRUs can be supported, but frequency band resources are excessively occupied
Solution Approach 1:
The system dynamically allocates wavelength channels based on actual RRU connection requirements. Rather than statically assigning fixed wavelength ranges as in traditional CWDM, the system flexibly assigns wavelengths from a smaller available band, optimizing frequency band utilization while supporting the required number of RRUs
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 reduces resource waste, lowers labor costs, and enables flexible RRU configuration by optimizing wavelength usage, thereby improving the efficiency of optical fiber and frequency band utilization in radio access systems.
Implementation Method 1
a first arrayed waveguide grating (AWG), a second AWG and one optical fiber. The first optical module is coupled to the first AWG and is configured to receive control information sent by the second optical module
Data Source
AI summary
The present disclosure provides a data transceiving method, a data transceiving device, a wavelength configuration method and a wavelength configuration device. The data transceiving method includes that a first optical module receives control information sent by a second optical module; the first optical module adjusts transmission and receiving wavelengths according to the control information; and the first optical module executes transmission and receiving of data with the second optical module according to the adjusted transmission and receiving wavelengths.