BBU RRH Identifier Exchange via Control Sub-Channels
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Solution Overview
Problem
Current methods for identifying and managing microwave (MW) links in digital radio over microwave (DRoM) systems, particularly in LTE networks, are costly and labor-intensive, requiring manual technician involvement to determine associated Base Band Units (BBUs) and Remote Radio Heads (RRHs), as well as to obtain service information like frequency bands and data rates.
Innovation Solution
Incorporating a system where BBU and RRH units automatically exchange identifiers through predetermined control sub-channels within microwave beams, allowing for automatic identification and storage of unit identifiers, and optionally transmitting additional service information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual technician involvement is used to identify and manage MW links, then service information can be obtained, but operational costs and labor intensity increase
Solution Approach 1:
The system enables automatic self-identification of MW links by having BBUs and RRHs autonomously exchange and process identifier information through control sub-channels, eliminating the need for manual technician intervention while maintaining accurate link identification
Solution Approach 2:
The system implements feedback mechanisms where identifiers are transmitted through control sub-channels and processed by receiving units, creating a closed-loop system that automatically confirms and validates link associations without manual verification
2Loss of information
If manual methods are used to determine BBU and RRH associations, then link information can be obtained, but time and resources are consumed
Solution Approach 1:
Identifier information is embedded in control sub-channels in advance, allowing receiving units to immediately obtain and process link association information without requiring time-consuming manual investigation or information gathering
Solution Approach 2:
The manual mechanical process of technician-based identification is replaced with an automated electronic information exchange system using control sub-channels, dramatically reducing the time required to obtain service information
3Productivity
If automatic identifier exchange is implemented, then operational costs are reduced, but system complexity increases
Solution Approach 1:
The control sub-channels serve multiple functions including identifier transmission, link association confirmation, and service information exchange, reducing the need for separate dedicated systems and thereby limiting the increase in overall system complexity
Solution Approach 2:
Control sub-channels act as intermediaries that facilitate automatic identifier exchange between BBUs and RRHs, providing a standardized communication mechanism that simplifies the automation process while managing system complexity
Data Source
Figure 1~3
Figure 4a~4b
AI summary
In a first embodiment, the invention relates to a BBU (Base Band Unit) (respectively RRH (Remote Radio Head)), comprising means for supplying to a microwave head (MWBBU, respectively MWRRH) connected to said BBU unit (respectively RRH), an identifier of said unit, in at least one pre-determined control sub-channel of a signal for the digital radio. In a second embodiment, the invention also relates to a BBU (respectively RRH) comprising means for receiving, from a microwave head (MWBBU, respectively MWRRH) to which said BBU (respectively RRH) is connected, an identifier of an RRH unit (respectively BBU) contained in at least one predetermined control sub-channel of a signal for the digital radio.