Cell Channel Allocation Using External Authorization and Weighting
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Solution Overview
Problem
Existing channel allocation methods in wireless cellular networks, such as those used in the Citizens Broadband Radio Service (CBRS) band, do not efficiently consider dynamic allocation of channels based on device capabilities, transmission power, and interference, leading to underutilization or ineffective allocation.
Innovation Solution
A method and apparatus for allocating radio channels that calculate weights for combinations of cells based on device capabilities, transmission power, and interference, allowing for dynamic reassignment of channels to optimize bandwidth, power, and interference mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channels are allocated based on static assignment without considering device capabilities and interference, then allocation simplicity is maintained, but bandwidth utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic channel allocation where the system continuously evaluates device capabilities, transmission power levels, and interference conditions to reassign channels in real-time. This dynamic approach transforms the static allocation mechanism into an adaptive system that optimizes bandwidth utilization based on current network conditions, directly resolving the contradiction between allocation simplicity and bandwidth efficiency.
Solution Approach 2:
The system changes multiple parameters simultaneously including channel frequency, transmission power, and device assignment based on evaluated performance metrics. By dynamically adjusting these parameters rather than maintaining fixed assignments, the system achieves higher bandwidth utilization while managing complexity through structured evaluation criteria.
2Area of stationary object
If transmission power is increased to improve coverage, then coverage area is improved, but power consumption and interference increase
Solution Approach 1:
The patent applies different transmission power levels to different devices and channels based on their specific requirements, device capabilities, and local interference conditions. Rather than using a uniform high power level across all transmissions, the system optimizes power allocation locally for each device-channel combination, achieving adequate coverage while minimizing overall power consumption and interference.
Solution Approach 2:
Transmission power is dynamically adjusted based on real-time evaluation of coverage requirements, device capabilities, and interference conditions. The system increases power only when and where necessary to maintain coverage, rather than maintaining consistently high power levels, thereby reducing overall energy loss while preserving coverage area.
3Productivity
If channels are reassigned frequently to optimize allocation, then bandwidth utilization improves, but system stability and device connectivity deteriorate
Solution Approach 1:
The system performs partial reassignments rather than complete reallocation of all channels. By selectively reassigning only those channels where optimization opportunities exist while maintaining stable assignments for others, the system improves bandwidth utilization without causing widespread connectivity disruptions or system instability.
Solution Approach 2:
The system evaluates potential reassignment impacts before executing channel changes, ensuring that reallocations maintain device connectivity and network stability. By performing preliminary assessments of reassignment consequences, the system avoids disruptive changes while still achieving bandwidth optimization where safe to do so.
Data Source
AI summary
A method for allocating radio channels for use in a wireless cellular network is disclosed. The method comprises receiving from a second system an authorization for the wireless cellular network to use radio channels The method also comprises calculating weights for a plurality of combinations of cells of the wireless cellular network with the radio channels from the second system and assigning at least some of the radio channels to at least some of the cells of the wireless cellular network based on the calculated weights. Apparatus and a computer program product for carrying out the method are also disclosed.