Flow-Based Processing in 5G Layer 2/1 Chain
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Solution Overview
Problem
Current 5G network deployments face challenges in efficiently managing traffic with varying Quality of Service (QoS) requirements, as existing technologies struggle to optimally associate data units with appropriate resources and processing functions within the 5G air interface.
Innovation Solution
The implementation of flow-based processing in the layer 2/layer 1 chain, enabled by per-packet determination using rules, allows for routing through applicable processing functions and mapping to uplink physical layer functions, thereby controlling aspects like scheduling request, buffer status reporting, HARQ processing, and radio link failure and recovery based on associated policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flow-based processing is implemented with per-packet determination using rules, then QoS enforcement and guarantees are improved, but device complexity increases
Solution Approach 1:
The patent segments the processing of data units by introducing flow-based processing rules that divide traffic into different flows with specific QoS requirements. Each flow is handled independently through the layer 2/layer 1 chain, allowing per-packet determination and routing through applicable processing functions. This segmentation enables targeted QoS enforcement without requiring complex global processing of all traffic uniformly.
Solution Approach 2:
The patent implements dynamic flow-based processing where the system can adaptively route data units through different processing functions based on real-time QoS requirements. The per-packet determination using rules allows the processing path to be dynamically selected, enabling the system to respond to varying traffic conditions and enforce appropriate QoS policies for each flow without static, rigid processing paths.
2Adaptability or versatility
If multiple processing functions are introduced for different QoS flows, then service characteristics are improved, but system complexity increases
Solution Approach 1:
The patent creates a universal processing framework at layer 2/layer 1 that can handle multiple different QoS flows through a single set of processing functions. The flow-based processing rules enable the same infrastructure to serve diverse service characteristics by dynamically routing different data units through appropriate processing paths, making the system multi-functional without requiring separate dedicated systems for each service type.
Solution Approach 2:
The patent introduces flow-based processing rules as an intermediary mechanism between the network layer and the layer 2/layer 1 processing functions. These rules act as a mediator that translates high-level QoS requirements into specific processing actions, enabling complex service characteristics to be achieved through a standardized interface without directly increasing the complexity of the underlying processing functions.
3Measurement precision
If per-packet determination is implemented, then QoS management precision is improved, but processing time increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring flow-based processing rules that define the QoS requirements and processing paths for different traffic types. This allows the system to quickly match incoming data units against predefined rules without performing complex real-time analysis, thereby maintaining high QoS management precision while minimizing the time required for per-packet determination.
Data Source
AI summary
Apparatuses and methods of flow-based processing in wireless systems are described. For example, in one method, a WTRU may determine that one or more data units correspond to a flow of such data units. The WTRU may perform such determination as a function of one or more matching rule(s). Flow-based processing may be enabled in the layer 2/layer 1 chain by per-packet determination using one or more rules, for example by routing through the applicable processing functions and/or using the applicable configuration and/or mapping to the applicable uplink physical layer functions and/or resources. One or more functions such as scheduling request, buffer status reporting, HARQ processing, and/or radio link failure and recovery may be controlled based on the policy associated with the flow corresponding to the data being processed.