Remote Radio Head Mounting Assembly for Fast Tower Installation
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Solution Overview
Problem
Existing solutions for attaching remote radio heads (RRH) to antenna modules on cellular towers are cumbersome and inefficient, requiring significant effort due to the size and weight of RRH units, and there is a need for a safer and more convenient attachment mechanism.
Innovation Solution
A frame and bracket configuration for the RRH that allows for slidable and releasable attachment to the antenna unit, utilizing a guide rail with an anchor pin and installation lever for easy alignment and connection of cable connectors, along with spring-loaded connectors to ensure robust RF connections despite misalignments and vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the RRH is attached close to the antenna unit to minimize cable length and signal loss, then the signal transmission efficiency is improved, but the attachment and detachment process becomes more difficult and dangerous due to the size and weight of the RRH
Solution Approach 1:
The attachment mechanism is divided into separate components: a bracket attached to the RRH, a guide rail attached to the antenna unit, and an installation lever. This segmentation allows the heavy RRH to be guided and secured through a simplified process where the lever provides mechanical advantage for attachment and detachment, reducing operator effort while maintaining the close coupling needed for signal efficiency
Solution Approach 2:
The guide rail acts as an intermediary between the RRH bracket and the antenna unit. It provides a constrained path for the RRH during attachment and detachment, guiding the movement and ensuring proper alignment while reducing the direct force required by the operator. The installation lever serves as another intermediary that provides mechanical advantage to move the heavy RRH along the guide rail
2Reliability
If the RRH is securely attached to the antenna unit, then the connection reliability is improved, but the time required for installation and maintenance becomes longer
Solution Approach 1:
The bracket is pre-attached to the RRH and the guide rail is pre-attached to the antenna unit before the actual installation process. This preliminary preparation ensures that when the RRH is brought to the antenna unit, it can be quickly guided into place along the pre-positioned rail and secured with a single lever operation, reducing installation time while maintaining secure attachment
Solution Approach 2:
The attachment mechanism transitions from a static, permanently fixed connection to a dynamic, easily reversible connection. The installation lever enables the RRH to be quickly attached and detached as needed, while the guide rail ensures proper alignment and the bracket provides secure holding when attached, achieving both reliability and speed
3Ease of operation
If the connector design allows for misalignment compensation, then the ease of connection is improved, but the device complexity increases
Solution Approach 1:
The guide rail provides a curved or angled path that accommodates misalignment between the RRH bracket and the antenna unit. Instead of requiring precise straight-line alignment, the rail's geometry guides the RRH into proper position, compensating for manufacturing tolerances and installation variations while adding minimal structural complexity
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
Facilitates quick and secure attachment and detachment of RRH units, maintaining reliable RF connections under varying conditions, including vibrations and shocks, while accommodating misalignments and reducing installation complexity.
Implementation Method 1
the connectors of the antenna module include a spring mechanism so as to receive the RRH cable connectors in a spring-loaded arrangement
Implementation Method 2
The spring-loaded connectors in the antenna module are preloaded to ensure the integrity of the radio frequency signal path. The spring-loaded connectors have other benefits in that tolerances can be overcome with a connector that has flexibility in axial and radial directions moving up and down. It also maintains a force on the radio connectors to maintain a robust RF connection through vibration and shock loads on the unit.
Data Source
AI summary
A remote radio head assembly is configured to attach a remote radio head to the back wall of an antenna unit. The remote radio head assembly has a top bracket coupled to the top portion of the remote radio head for handling the remote radio head. The top bracket has a protrusion extending towards the back wall of the antenna unit. A side bracket section is coupled to the top side portion of the remote radio head. The side bracket section has a pivot point for receiving an installation lever configured to engage with the remote radio head protrusion at the pivot point to move the remote radio head in downward and upward direction to couple to the connector ports of the antenna unit.