Dynamic Frequency Band Allocation for Wireless Network Capacity
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Solution Overview
Problem
In wireless communication systems, managing frequency bands efficiently to handle increased call traffic and support higher data rates is challenging, especially in legacy CDMA networks, where power allocation and channel usage are limited, leading to suboptimal performance in high-demand scenarios.
Innovation Solution
A method is introduced to select the most suitable frequency band for data communication by obtaining usage measurements, such as idle slots or data channels, across multiple frequency bands, allowing for dynamic allocation to optimize capacity and reduce congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency bands are allocated statically in legacy CDMA networks, then network stability is maintained, but network capacity and data rates are limited
Solution Approach 1:
The patent implements dynamic frequency band allocation where the system continuously monitors usage measurements (such as idle slots and data channels) across multiple frequency bands and automatically selects the most suitable band for each data communication request. This dynamic approach allows the network to adapt to changing traffic conditions and maximize capacity without requiring complex manual configuration
Solution Approach 2:
The system employs feedback mechanisms by measuring and evaluating the usage status of frequency bands in real-time. These measurements feed into the allocation decision process, allowing the system to identify underutilized bands and redirect traffic accordingly, thereby increasing overall network capacity while maintaining manageable complexity through automated decision-making
2Productivity
If existing frequency bands are fully utilized, then network coverage is maximized, but congestion increases and data rates decrease
Solution Approach 1:
The system continuously monitors usage measurements including idle slots and data channel occupancy across frequency bands. When congestion is detected in currently active bands, the feedback mechanism triggers a search for alternative underutilized bands, allowing the system to maintain high data rates by redistributing traffic to less congested frequencies
Solution Approach 2:
The patent changes the operational parameters of the network by dynamically selecting different frequency bands based on measured conditions. When a band becomes congested, the system transitions to using a different band with better available capacity, thereby maintaining data rate performance and network reliability without requiring increases in transmission power or changes to existing band configurations
3Productivity
If multiple frequency bands are monitored and dynamically selected, then resource utilization improves, but measurement and selection complexity increases
Solution Approach 1:
The system performs self-service by autonomously measuring usage metrics across frequency bands and making allocation decisions without external intervention. The network infrastructure itself generates and processes the measurement data, eliminating the need for complex external monitoring systems and simplifying the overall measurement process while maintaining high resource utilization efficiency
Data Source
AI summary
A method for selecting a frequency band, from among a plurality of frequency bands controllable by a radio network controller (RNC), to carry a data communication. The method may include obtaining frequency band usage measurements for a plurality of frequency bands, and using the frequency band usage measurements to select a particular frequency band of the plurality of frequency bands to carry the data communication. Frequency band usage measurements may be based on how many idle slots (and/or data channels) are carried through each of the plurality of frequency bands during a measurement time period. A comparison of the frequency band usage measurements can be used to determine which frequency band sent the greatest number of idle slots (or the fewest number of data channels). The method provides for selecting a frequency band best suited (e.g., has the most available capacity for carrying a data communication) for carrying the data communication.