Cross-Frequency Network Load Balancing in CDMA Base Stations
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Solution Overview
Problem
Current network load balancing algorithms only offload traffic across sectors on the same frequency, failing to address load imbalances across different frequencies in CDMA networks, which limits the improvement of user throughput and resource utilization.
Innovation Solution
A base station with a processing unit and network interface that utilizes a load matrix to offload traffic from a loaded sector at one frequency to a less loaded sector at a different frequency, determining suitable targets based on signal-to-noise ratio and suitability metrics, and adjusting resources to optimize user connections across sectors and frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network load balancing is implemented only across sectors on the same frequency, then the algorithm complexity remains manageable and implementation is simpler, but the ability to address load imbalances across different frequencies is limited
Solution Approach 1:
The patent extends network load balancing from a one-dimensional sector-based approach to a two-dimensional sector-frequency approach. By introducing frequency as an additional dimension for load balancing decisions, the system can offload traffic not only across sectors but also across frequencies, thereby addressing load imbalances more comprehensively while maintaining manageable complexity through structured decision-making frameworks.
2Productivity
If traffic offloading is restricted to the same frequency, then frequency-specific quality of service is maintained, but resource utilization across the network is suboptimal
Solution Approach 1:
The patent changes the parameter space for load balancing decisions by incorporating frequency as a variable dimension. Instead of restricting offloading to the same frequency, the system evaluates and selects target sectors across different frequencies based on load conditions, thereby optimizing resource utilization while maintaining quality of service through careful selection criteria that consider signal quality and network conditions.
3Productivity
If connected users are not allowed to offload to different frequencies, then the current implementation remains simple, but user throughput improvement is limited
Solution Approach 1:
The patent introduces dynamic load balancing capabilities for connected users, allowing them to be offloaded to different frequencies based on real-time network conditions. This dynamic approach enables the system to adapt to changing load distributions and optimize user throughput by selecting the most appropriate frequency- sector combinations, while the complexity is managed through structured algorithms and decision-making frameworks.
Data Source
AI summary
A base station that supports different sectors and co-located different frequencies across the different sectors in a CDMA network having an Access Terminal includes a processing unit which determines a load imbalance on a connection in a first sector at a first frequency. The base station includes a network interface unit through which the processing unit offloads traffic from the connection in the first sector at the first frequency to a first or second sector at a second frequency. A method for sending traffic with a base station that supports different sectors and co-located different frequencies across the different sectors in a CDMA network having an Access Terminal including the steps of determining with a processing unit a load imbalance on a connection in a first sector at a first frequency. There is the step of offloading with the processing unit through network interface unit traffic from the connection in the first sector at the first frequency to a first or second sector at a second frequency.