Control Network Node for CBRS Radio Resource Management
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Solution Overview
Problem
The existing technologies for wireless communication networks, particularly in the context of Citizens Broadband Radio Service (CBRS), face challenges in efficiently managing radio resources and minimizing interference among radio network nodes, leading to suboptimal channel utilization and throughput.
Innovation Solution
A control network node is introduced to manage radio resources by receiving performance indications from radio network nodes, triggering performance adjustments based on load, priority, and service level agreements, and implementing mechanisms like resource partitioning, channel reuse, and dynamic power control to optimize network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple radio network nodes share the same frequency band simultaneously, then channel utilization increases, but mutual interference increases and performance deteriorates
Solution Approach 1:
The control network node segments the frequency band by allocating different time periods to different radio network nodes. This time-division approach allows multiple nodes to share the same frequency band while preventing simultaneous transmissions that would cause interference, thus resolving the contradiction between channel utilization and interference reduction
Solution Approach 2:
The system dynamically adjusts transmission parameters based on actual load conditions. The control network node receives performance indications from radio network nodes and triggers performance adjustments adaptively, allowing the system to optimize channel utilization while maintaining acceptable interference levels through real-time parameter changes
2Productivity
If radio network nodes transmit continuously to maximize throughput, then productivity increases, but interference to other nodes increases
Solution Approach 1:
The system implements periodic transmission schedules where radio network nodes transmit in designated time periods rather than continuously. This periodic action allows nodes to achieve substantial throughput while ensuring that interference is confined to specific time windows, preventing constant interference to other nodes
Solution Approach 2:
The control network node changes transmission parameters such as time period allocation and power levels based on performance indications. By adjusting these parameters dynamically, the system maintains high throughput where needed while reducing interference generation in other time periods or areas
3Productivity
If the control network node adjusts performance parameters frequently to optimize utilization, then channel utilization improves, but system complexity increases
Solution Approach 1:
The control network node employs a feedback mechanism where radio network nodes send performance indications about their transmission conditions. Based on this feedback, the control node triggers performance adjustments only when necessary, optimizing channel utilization without requiring complex continuous control of all parameters
Data Source
AI summary
A method performed by a control network node for handling a radio resource in a frequency band. The control network node receives an indication related to a performance of a first radio network node or a performance of user equipment served by the first radio network node. The control network node further triggers a performance adjustment related to at least one radio network node of a number of radio network nodes or to the first the radio network node based on the indication.