Dynamic Subscriber Provisioning for Network Congestion
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Solution Overview
Problem
Fourth-generation wireless networks face Quality of Service (QoS) issues due to network congestion, latency, and bandwidth competition among diverse multimedia applications and devices, exacerbated by heavy users during peak times, leading to disproportionately low resources for other subscribers.
Innovation Solution
A system and method for dynamically provisioning network subscribers by throttling or rate limiting heavy users during high congestion periods, adjusting packet forwarding priorities, and managing bandwidth to ensure minimum QoS for all users, using a Policy Charging and Rules Function (PCRF) server to monitor traffic and adjust Quality of Service Classification Identifiers (QCI) based on current and historic usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heavy use subscribers are allowed to utilize high network bandwidth during peak times, then their service quality is improved, but network congestion is exacerbated and other subscribers receive disproportionately low network resources
Solution Approach 1:
The patent implements dynamic bandwidth allocation where subscribers are provisioned into different priority queues based on real-time network conditions. During high congestion periods, the system dynamically adjusts which subscribers receive higher priority access, moving away from static bandwidth allocation to adapt to changing network demands and ensure fair resource distribution.
Solution Approach 2:
The system changes the parameter of subscriber priority by dynamically provisioning subscribers into different priority queues (first priority, second priority, third priority) based on network congestion levels. This parameter change allows the network to shift resource allocation patterns without physical infrastructure changes, resolving the contradiction between serving heavy users and maintaining overall network productivity.
2Ease of operation
If network bandwidth is allocated to accommodate all subscribers during high congestion, then network fairness is improved, but overall network performance and QoS deteriorate
Solution Approach 1:
The patent segments subscribers into multiple priority queues (first priority queue, second priority queue, third priority queue) based on their usage patterns and network conditions. This segmentation allows the system to manage fairness by ensuring each segment receives appropriate service levels while maintaining overall network performance through differentiated handling of traffic streams.
Solution Approach 2:
The system introduces an intermediary mechanism (the PCRF server and priority queue system) that mediates between individual subscriber demands and overall network performance. This intermediary dynamically adjusts priority assignments based on real-time conditions, ensuring fairness is achieved through controlled allocation rather than uncontrolled equal distribution that would degrade performance.
3Productivity
If rate limiting is applied to heavy use subscribers during high congestion, then network congestion is alleviated, but service quality for those subscribers deteriorates
Solution Approach 1:
The system applies rate limiting periodically and conditionally rather than continuously. Subscribers are monitored and dynamically provisioned into appropriate priority queues based on real-time network congestion levels. When congestion is high, heavy users are temporarily moved to lower priority queues; when congestion eases, they are restored to higher priority queues, providing periodic relief to network capacity while maintaining service quality through restoration.
Solution Approach 2:
The patent implements dynamic priority adjustment where service quality for rate-limited subscribers is maintained through the ability to dynamically change their priority assignment. Rather than static rate limiting that permanently degrades service, the system dynamically adapts subscriber priorities based on network conditions, ensuring service quality is preserved when network capacity is available.
Data Source
AI summary
A system comprising: one or more server devices to: set a first network threshold level for determining network congestion in a network; set rate limiting criteria for determining when one or more subscribers will be rate limited; detect an increase in network congestion at a base station above the first network threshold level; identify one or more subscribers meeting one or more of the rate limiting criteria; rate limit network traffic associated with the one or more subscribers; detect a decrease in network congestion at the base station below a second network threshold level; and remove the rate limiting of the network traffic associated with the one or more subscribers.


