CBRS Device Sensor Scanning for Priority User Interference Avoidance
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Solution Overview
Problem
The Citizens Broadband Radio Service (CBRS) band's shared wireless broadband use is hindered by the challenge of ensuring that priority users, such as the United States Navy, are not subjected to harmful interference, while also maximizing the deployment of telecommunications infrastructure, particularly near coastal areas where Navy use is expected.
Innovation Solution
Implementing sensors in user equipment and base stations to scan the CBRS band, generate sensor data on energy levels and user identity, and adjust transmission power and channel selection to avoid interfering with priority users, ensuring compliance with Federal Communications Commission rules and allowing flexible wireless broadband use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sensors are implemented to scan the CBRS band and adjust transmission power to avoid interference with priority users, then harmful interference to priority users is reduced, but device complexity increases
Solution Approach 1:
The patent introduces sensors as intermediary devices that scan the CBRS band to detect energy levels and identify priority users. These sensors act as mediators between the transmission system and priority users, enabling the system to detect and avoid harmful interference without direct interaction. The sensor data serves as an intermediary information source that guides transmission power adjustment decisions.
Solution Approach 2:
The patent implements a feedback mechanism where sensor data about energy levels and detected users is continuously monitored and fed back to the transmission system. This feedback loop enables dynamic adjustment of transmission power and channel selection based on real-time spectrum conditions, ensuring harmful interference is avoided while maintaining efficient spectrum utilization.
2Object-affected harmful factors
If transmission power is reduced to avoid interfering with priority users, then harmful interference is reduced, but productivity of wireless broadband deployment decreases
Solution Approach 1:
The patent employs dynamic transmission power adjustment based on real-time sensor data. Instead of using a fixed reduced power level, the system dynamically adapts transmission power according to detected spectrum conditions, priority user locations, and channel availability. This dynamic approach allows maximum permissible power to be used when safe, optimizing deployment productivity while avoiding harmful interference when necessary.
Solution Approach 2:
The patent applies different transmission power levels and channel selections in different spatial locations and frequency bands. By analyzing sensor data to identify specific geographic areas and frequency channels where priority users are present, the system applies interference avoidance measures locally rather than globally, allowing high-power transmissions in areas without priority users and maintaining productivity.
3Reliability
If channel scanning and sensor data collection are performed frequently to ensure compliance with FCC rules, then reliability of interference avoidance is improved, but loss of time for broadband deployment increases
Solution Approach 1:
The patent implements periodic channel scanning and sensor data collection at optimized intervals rather than continuously. The scanning frequency is adjusted based on detected spectrum conditions, priority user activity patterns, and environmental factors. This periodic approach maintains reliable interference avoidance by scanning sufficiently often to detect changes while minimizing unnecessary scanning that would waste time.
Solution Approach 2:
The patent performs partial scanning of the CBRS band by focusing on specific frequency channels and geographic areas where priority users are detected or likely to be present, rather than scanning the entire band continuously. This selective partial scanning approach maintains reliability for protecting priority users while reducing the time and resources required compared to exhaustive full-band scanning.
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 enables the installation of telecommunications infrastructure near coastal areas without harming priority users, while ensuring that priority users can utilize the CBRS band without interference, thereby enhancing broadband access and performance for consumers.
Implementation Method 1
sensors configured to operate in the CBRS band can scan at least a portion of the CBRS band to generate sensor data indicating at least energy present
Data Source
AI summary
Wireless transmission regulation for a frequency band associated with Citizens Broadband Radio Service (CBRS) is described. In an example, a sensor associated with a device, which is configured to operate in the frequency band, can scan at least a portion of the frequency band to generate sensor data indicating at least energy present in the portion of the frequency band. The device can determine, based at least in part on analyzing the sensor data, a presence of another device using the frequency band. The other device can be a priority user having priority access over the device. Based at least in part on determining the presence of the other device, the device can adjust a device radio frequency (RF) transmission power for transmitting communication(s) within the frequency band.