Band Agile Mobile Base Station with Removable RF Modules
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Solution Overview
Problem
Existing wireless communication systems face limitations in extending coverage beyond the range of fixed cellular base stations, particularly in cost-constrained or environmentally challenging areas, and require additional infrastructure like microcells, which are power-limited and unsuitable for mobility.
Innovation Solution
A portable and mountable mobile cellular base station equipped with multiple MIMO RF front end modules operating at different RF carrier frequencies, allowing automatic or user-controlled switching between them to establish communication links, eliminating the need for an access point and supporting various environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If additional cellular base stations are added to extend service coverage, then coverage area is improved, but cost and environmental impact worsen
Solution Approach 1:
The patent implements a mobile base station that can be deployed on vehicles (cars, trucks, boats, aircraft) rather than fixed towers. The base station dynamically moves to different locations to provide coverage, eliminating the need for permanent infrastructure installation. This resolves the contradiction by extending coverage area without the high cost and environmental impact of building additional fixed base stations.
Solution Approach 2:
The mobile base station is designed to operate in multiple frequency bands (e.g., 700 MHz, 2.6 GHz, 3.5 GHz) and can serve various environments (urban, rural, maritime, aerial). This multi-functional capability allows a single device to replace multiple specialized base stations, reducing overall deployment cost while maintaining extensive coverage area.
2Area of stationary object
If microcell base stations are used to extend coverage in small locations, then indoor and edge coverage is improved, but power consumption and communication range worsen
Solution Approach 1:
The mobile base station can dynamically adjust its transmission power and operating frequency band based on environmental conditions and coverage requirements. In urban environments with obstacles, it can use lower frequency bands (700 MHz) that propagate better and require lower power. In open areas, it can switch to higher frequency bands for capacity. This adaptive parameter adjustment provides extensive coverage without excessive power consumption.
3Area of stationary object
If microcell base stations are deployed, then coverage extension is improved, but mobility and accessibility worsen
Solution Approach 1:
The base station is designed as a mobile unit that can be transported to and from different locations. It can be mounted on vehicles or deployed temporarily at event locations, providing coverage extension while maintaining full mobility. This resolves the contradiction by allowing the base station to be relocated as needed, unlike fixed microcells that require permanent installation.
4Adaptability or versatility
If multiple RF front end modules are included for band agility, then adaptability to different environments is improved, but device complexity worsens
Solution Approach 1:
The system includes multiple RF front end modules that can be dynamically selected and activated based on the operating environment and frequency requirements. The base station can switch between different frequency bands (700 MHz, 2.6 GHz, 3.5 GHz) by activating the appropriate RF module, providing band agility without requiring all modules to operate simultaneously. This reduces the effective complexity at any given time while maintaining versatility.
Data Source
AI summary
Disclosed is a wireless communication station including an edge server configured to establish a wireless connection with a network and receive first and second data from the network, and a baseband radio configured to receive the first and second data from the edge server and convert the first and second data to first and second digital transmission data. The wireless communication station further includes first and second radio frequency (RF) front end modules removably attached to the baseband radio and operable in first and second frequency bands, respectively, and configured to receive the first and second digital transmission data, convert the first and second digital transmission data to first and second RF transmission data, and transmit the first and second RF transmission data. The edge server, the baseband radio, and the first and second RF front end modules are provided in the housing, and the first and second frequency bands are different.