Base Station Traffic Flow Congestion Control via IP Packet Marking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing 3GPP ECN congestion control scheme in wireless communication networks is inefficient as it relies on base stations to set congestion bits based on overall congestion, leading to unnecessary rate reduction of non-congested traffic flows and inadequate support for multi-connection scenarios, where traffic can be routed through multiple base stations, causing user throughput issues.
Innovation Solution
Implement a method and device that determine congestion at the traffic data flow level, allowing the setting of IP data packets to indicate congestion only when specific traffic flows are congested, thereby differentiating between flows and preventing unnecessary rate reductions, especially in multi-connection environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station sets the ECN congestion bit according to whether the whole base station is congested, then the congestion control mechanism can be implemented, but the transmitting end will reduce the rate of traffic flows that do not need rate reduction, causing user throughput to be affected
Solution Approach 1:
The patent segments the congestion control mechanism from base station level to traffic flow level. Instead of treating the entire base station as a single congestion unit, the system identifies and monitors individual traffic flows separately. When congestion occurs, only the affected traffic flow receives ECN marking, while other flows continue unaffected. This segmentation resolves the contradiction by enabling precise congestion control that maintains overall throughput while ensuring reliable congestion notification for affected flows.
Solution Approach 2:
The patent applies local quality by differentiating congestion status across different traffic flows within the base station. Each traffic flow is evaluated independently for congestion conditions, allowing the system to apply ECN marking locally only where needed. This approach ensures that congestion control is applied precisely to affected flows rather than globally, thereby maintaining user throughput for non-congested flows while ensuring reliable congestion control for affected ones.
2Ease of operation
If the base station sets ECN congestion bit based on overall congestion, then the implementation is simple, but it causes unnecessary rate reduction of non-congested traffic flows
Solution Approach 1:
The patent segments the congestion detection and ECN marking process to operate at the traffic flow level rather than base station level. The congestion detection unit monitors individual traffic flows separately, and the ECN marking unit applies markings only to affected flows. This segmentation maintains relative implementation simplicity while dramatically improving network efficiency by avoiding unnecessary rate reductions in non-congested flows.
Solution Approach 2:
The patent changes the parameter of congestion detection from a binary base station-wide state to multiple traffic flow-specific states. By monitoring congestion parameters individually for each traffic flow, the system can make more informed decisions about ECN marking, thereby improving network efficiency without significantly complicating the implementation.
3Adaptability or versatility
If the base station uses ECN-based congestion control for all traffic flows, then the congestion notification mechanism is unified, but it cannot differentiate between traffic flows with different QoS characteristics
Solution Approach 1:
The patent segments the ECN marking process to operate independently for each traffic flow while maintaining a unified overall mechanism. The congestion detection unit evaluates each traffic flow separately based on its QoS characteristics, and the ECN marking unit applies appropriate markings per flow. This segmentation enables both unified congestion control implementation and precise traffic flow differentiation, resolving the contradiction between universality and measurement precision.
Solution Approach 2:
The patent applies local quality by customizing ECN marking behavior for each traffic flow based on its specific QoS requirements. Different traffic flows can have different ECN marking thresholds and strategies applied locally, allowing the system to maintain unified congestion control mechanisms while achieving precise differentiation and adaptation to various traffic types.
Data Source
AI summary
Provided are a congestion control method and device, and a base station. The congestion control method includes: determining whether a traffic data flow transmitted by a base station is congested; setting an Internet protocol (IP) data packet in the traffic data flow when the traffic data flow transmitted by the base station is congested, where the set IP data packet is used for indicating that the traffic data flow transmitted by the base station is congested. The present disclosure solves the problem in the existing art that user throughput is affected because a base station only determines whether the base station is congested.