User Plane Congestion Management via QoS Adjustment
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Solution Overview
Problem
Current wireless communication systems lack mechanisms to effectively manage user plane congestion by differentiating premium subscribers and informing Wireless Transmit/Receive Units (WTRUs) about network congestion, leading to inadequate resource allocation and user experience during congestion events.
Innovation Solution
A method where the WTRU receives an indication of network congestion and requests a lower Quality of Service (QoS) level, allowing the network to prioritize traffic based on user preferences and subscription levels, enabling efficient resource reallocation and user awareness of congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the network informs the WTRU about congestion, then the WTRU can adjust its traffic to reduce congestion, but the WTRU may fail to access the network for services that require minimal QoS
Solution Approach 1:
The patent applies local quality by differentiating congestion control actions based on service type and QoS requirements. Instead of uniform congestion response, the network identifies specific services (e.g., FTP, social apps) and applies targeted control measures while allowing critical services to continue, thus reducing overall congestion impact while maintaining essential network access.
Solution Approach 2:
The patent utilizes parameter changes by modifying QoS parameters dynamically based on congestion conditions. The network adjusts QoS levels for different services during congestion events, changing traffic handling parameters selectively to alleviate congestion without completely blocking network access for all services.
2Reliability
If the network applies per user congestion control to maintain high QoS users, then high QoS users are protected, but low QoS users experience reduced service quality
Solution Approach 1:
The patent applies segmentation by dividing users into different QoS categories (high QoS and low QoS users) and applying differentiated congestion control mechanisms to each segment. This allows the network to protect premium services while managing standard services separately, ensuring reliable high QoS delivery without completely blocking low QoS access.
Solution Approach 2:
The patent implements partial action by applying congestion control selectively to certain user groups and services rather than uniformly to all traffic. The network applies control measures partially to low QoS users while maintaining full service quality for high QoS users, optimizing overall system performance during congestion.
3Reliability
If the network delays or drops non-critical application traffic to alleviate congestion, then resource allocation to critical applications improves, but overall network resource utilization decreases
Solution Approach 1:
The patent implements feedback mechanisms where the network monitors congestion conditions and dynamically adjusts traffic handling decisions. Based on real-time congestion feedback, the network selectively delays or drops non-critical traffic while maintaining critical services, optimizing resource utilization through adaptive control rather than static resource allocation.
Solution Approach 2:
The patent applies dynamics by making congestion control decisions adaptable and changeable based on current network conditions. The network dynamically adjusts which services are delayed or dropped, allowing flexible resource utilization that responds to changing congestion levels rather than following fixed resource allocation rules.
Data Source
AI summary
A method and apparatus for managing user plane congestion in a network are disclosed. A method performed by a wireless transmit/receive unit (WTRU) for user plane congestion in a network includes receiving an indication from the network that user plane congestion exists in the network, transmitting a request for the network to provide a lower Quality of Service (QoS) level for a particular service based on the indication, and observing a decrease in user plane QoS based on the transmitted request.