Interference Controller for Mobile Network Frequency Band Coordination
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Solution Overview
Problem
Mobile radio networks face significant interference between neighboring frequency bands, leading to signal degradation and capacity loss, with existing solutions either increasing interference or wasting frequency resources by avoiding certain bands to prevent interference.
Innovation Solution
A mobile communications system with a controller that determines interference between different types of traffic in separate frequency bands and generates instructions to adjust transmission parameters, such as handover, power control, and scheduling, to minimize interference while prioritizing critical traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is increased to mitigate signal degradation from interference, then signal quality is improved, but interference is increased and network capacity decreases
Solution Approach 1:
The system dynamically adjusts transmission parameters (power levels, modulation schemes, coding rates) based on real-time interference conditions. The controller modifies these parameters adaptively to maintain signal quality while minimizing the generation of harmful interference to other users.
Solution Approach 2:
The patent implements dynamic interference management where the controller continuously monitors interference levels and adjusts transmission parameters in real-time. This dynamic adaptation allows the system to respond to changing channel conditions and interference patterns, optimizing performance without causing excessive interference.
2Object-generated harmful factors
If frequency bands are avoided to prevent interference, then interference is reduced, but network capacity and resource utilization are lost
Solution Approach 1:
The controller acts as an intermediary that coordinates transmissions across different frequency bands. It manages the interaction between bands by scheduling and power control, enabling previously unusable frequency bands to be utilized while maintaining acceptable interference levels through intelligent coordination.
Solution Approach 2:
The system changes operational parameters such as power spectral density, transmission timing, and frequency allocation dynamically. This allows the network to utilize a broader range of frequency bands by adjusting parameters to keep interference within acceptable thresholds, thereby increasing overall network capacity.
3Object-generated harmful factors
If spectrum is divided between different technologies and operators, then interference between technologies is reduced, but frequency resource utilization is inefficient
Solution Approach 1:
The controller implements a universal interference management framework that handles multiple radio access technologies and operators within a single coordination system. This multi-functional approach allows different technologies to share frequency resources efficiently while the controller manages interference between them through coordinated parameter adjustment.
Solution Approach 2:
The patent merges the interference management of different technologies and operators under a unified control mechanism. By combining coordination functions, the system enables more efficient sharing of frequency resources across technology boundaries while maintaining interference protection through centralized or distributed control.
Data Source
AI summary
A mobile communications system comprises a first group of one or more base stations which are arranged to communicate signals with mobile units via a wireless access interface by transmitting and/or receiving radio signals within a first frequency band; a second group of one or more base stations which are arranged to communicate signals with mobile units via a wireless access interface by transmitting and/or receiving radio signals within a second frequency band; and a controller. The controller is arranged in operation to determine an amount of interference in the first frequency band to radio signals for a first type of traffic where the interference is caused by radio signals for a second type of traffic in the second frequency band, wherein: the radio signals for the first type of traffic are to and/or from a first base station of the first group; and the radio signals for the second type of traffic are to and/or from to a second base station of the second group; and to, in response to the determined interference, generate instructions to influence the second group in respect of the transmission of the radio signals for the second type of traffic in the second frequency band, wherein the instructions are generated based on at least a priority for the first type of traffic and a priority for the second type of traffic. In one example, the first group of one or more base stations may be providing communications services to human to human communications (H2H), whereas the second group of one or more base stations may be providing communications services supporting machine type communications (MTC), where H2H communications are prioritizes over machine type communications. The second group of one or more base stations is therefore instructed to take action to reduce the interference caused by the mobile unit.