LTE Packet Filter QoS Segmentation for Traffic Prioritization
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Solution Overview
Problem
Current LTE networks face challenges in effectively managing diverse Quality of Service (QoS) requirements for multiple applications running concurrently on User Equipment (UE), as existing packet filters and bearers are not adequately equipped to differentiate and prioritize traffic flows based on varying application needs.
Innovation Solution
Enhancements to packet filters and bearers are introduced, including associating QoS parameters with packet filters, extending packet filter usage to other nodes, and implementing packet classification and reclassification entities to dynamically manage traffic flows and prioritize packets based on application-specific information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple applications run concurrently on UE with different QoS requirements, then application functionality is improved, but QoS differentiation and prioritization capability deteriorates due to inadequate packet filters and bearers
Solution Approach 1:
The patent segments traffic flows by introducing application-specific packet filters that can identify and classify packets from different applications. Each filter is associated with specific QoS parameters, enabling granular segmentation of traffic flows based on application requirements rather than treating all traffic uniformly.
Solution Approach 2:
The patent applies local quality by allowing different QoS parameters to be assigned to different packet filters based on application-specific needs. Each packet filter can have customized QoS characteristics (priority, delay tolerance, bandwidth requirements) tailored to the specific application it serves, enabling localized QoS optimization.
2Device complexity
If existing packet filters and bearers are used without enhancement, then system simplicity is maintained, but QoS handling precision deteriorates due to inability to differentiate traffic flows
Solution Approach 1:
The patent implements preliminary action by pre-configuring packet filters with application-specific identification rules and QoS parameters before traffic flows are established. The network can pre-prepare filter rules for known applications, enabling immediate QoS differentiation when traffic arrives without requiring complex real-time analysis.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of enhanced packet filters that act as mediators between raw traffic packets and the QoS handling system. These filters intercept packets, apply classification rules, and redirect traffic to appropriate bearers based on application identity, simplifying the overall QoS architecture while improving precision.
3Measurement precision
If packet filters are extended to other nodes and reclassification entities are added, then QoS routing and scheduling precision is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing packet filters and reclassification entities that can be deployed across multiple network nodes (UE, eNodeB, gateway) with consistent functionality. The same filter mechanism and QoS parameter structure are used throughout the network, allowing multi-functional QoS handling without requiring node-specific complex implementations.
Solution Approach 2:
The patent implements nested doll by creating a hierarchical QoS architecture where packet filters operate at multiple levels (UE level, network level) with each level nested within the other. The UE-level filters handle initial classification, while network-level reclassification entities provide additional refinement, creating a nested structure that improves precision without linearly increasing overall complexity.
Data Source
AI summary
Embodiments of a User Equipment (UE) arranged for transmitting packets in a cellular network are disclosed herein. The UE can generate a first packet having a first packet classification information and a second packet having a second packet classification information. The first packet classification information can be associated with a different quality of service (QoS) requirement than the second packet classification information. The UE, using a packet filter, can determine, based on the first packet classification information, a first traffic flow from a plurality of traffic flows in a traffic flow template (TFT) for transmitting the first packet. Additionally, the UE can determine, based on the second packet classification information, a second traffic flow from the plurality of traffic flows for transmitting the second packet. Subsequently, the UE send the first packet to the first traffic flow and the second packet to the second traffic flow.