Access Point QoS Preservation Using QCI and Bitrate Margins
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Solution Overview
Problem
In private networks utilizing 5G New Radio (NR) functionality, ensuring consistent Quality of Service (QoS) and bitrate across multiple independent streams as they 'hop' from node to node is challenging, particularly when different communication protocols are involved, leading to issues in arbitrating and managing these streams effectively.
Innovation Solution
The method involves obtaining and managing multiple QoS class identifiers (QCIs) and bitrates for different communication protocols, applying margin increments to ensure that the communication link maintains the desired QoS and bitrate, and configuring the link accordingly to preserve these parameters across access point devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple independent streams are created with different QCI/QoS parameters, then each stream can be customized for specific quality requirements, but it becomes difficult to arbitrate and manage these streams effectively across the network
Solution Approach 1:
The patent combines multiple independent streams with different QCI/QoS parameters into a single aggregated stream for transmission over the shared wireless backhaul link. This merging approach simplifies arbitration by treating the combined traffic as one flow while preserving individual stream QoS characteristics through weighted resource allocation.
Solution Approach 2:
The patent transforms multiple streams with varying QoS parameters into a unified stream representation that maintains essential QoS characteristics. By changing the parameter representation from individual stream details to aggregated stream properties with weighted QoS factors, the system reduces management complexity while preserving adaptability.
2Reliability
If a high bitrate and low latency dedicated link is used, then individual stream quality can be maintained, but arbitrating multiple independent streams becomes problematic
Solution Approach 1:
The patent merges multiple high-quality streams into a single aggregated flow over the dedicated link, maintaining individual stream quality through weighted resource allocation while simplifying arbitration to a single unified management process rather than separate arbitration for each stream.
Solution Approach 2:
The patent creates a universal arbitration mechanism that handles multiple streams with different QoS requirements through a single weighted fair queueing system. This multi-functional arbitration approach can accommodate various stream types (voice, data, video) with different QCI values using the same arbitration framework.
3Adaptability or versatility
If QoS parameters are set at each node for every stream, then end-to-end QoS preservation becomes challenging, but stream-specific quality control is enabled
Solution Approach 1:
The patent applies local quality control at each network node by maintaining QoS weights and parameters specific to each stream locally, while ensuring end-to-end QoS preservation through consistent weighted resource allocation across all nodes. Each node independently manages its local streams with appropriate QoS weights that reflect the overall end-to-end requirements.
Data Source
AI summary
Disclosed is a method performed by an access point device in a private network. The method includes obtaining a first quality of service (QoS) class identifier (QCI) and a first for first streams transmitted using a first communications protocol, obtaining a second QCI and a second bitrate for second streams transmitted using a second communications protocol, obtaining a third QCI based on the first QCI and a first QCI margin increment, obtaining a third bitrate based on the first bitrate and a first bitrate margin increment, obtaining a fourth QCI based on the second QCI and a second QCI margin increment, obtaining a fourth bitrate based on the first bitrate and a first bitrate margin increment, and transmitting the first and second streams using a communication link configured based on the third QCI, the third bitrate, the fourth QCI, and the fourth bitrate.