5G CPE WLAN QoS Extension for URLLC
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Solution Overview
Problem
Current wireless communication systems face challenges in maintaining quality of service (QoS) for 5G network slices within wireless local area networks (WLANs), as existing technologies fail to effectively extend end-to-end QoS parameters to WLAN communications, leading to suboptimal performance in services requiring specific QoS requirements like ultra-reliable low latency communication (URLLC).
Innovation Solution
The implementation of a 5G customer premises equipment (CPE) that manages WLAN settings and traffic flows based on Quality of Service (QoS) Indicators (QI) associated with network slices, including prioritization of traffic, modulation and coding schemes, and resource allocation to ensure that QoS parameters are met for services like URLLC, by utilizing advanced wireless protocols such as OFDMA and MU-MIMO.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing WLAN technologies are used without QoS extension, then device compatibility and ease of operation are maintained, but quality of service (QoS) for 5G network slices cannot be ensured
Solution Approach 1:
The patent introduces a WLAN controller as an intermediary device that manages QoS parameters between the 5G core network and WLAN access points. The controller receives QoS requirements from the 5G network, translates them into WLAN-specific parameters, and enforces them at the AP level, thereby resolving the contradiction by adding a specialized management layer without requiring complex changes to existing WLAN devices
Solution Approach 2:
The patent extends 5G QoS parameters (5QI, QoS flow ID, slice ID) into the WLAN domain by mapping them to equivalent WLAN parameters such as traffic identifiers (TID), access categories (AC), and channel access priorities. This parameter transformation enables QoS enforcement in WLAN while maintaining compatibility with existing 802.11 standards
2Reliability
If QoS parameters are extended to WLAN communications, then service reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the QoS management functionality into distinct components: a WLAN controller that handles high-level QoS policy management, and WLAN access points that execute specific QoS enforcement actions. This segmentation allows the complex QoS extension to be implemented in a modular fashion, reducing overall system complexity while maintaining end-to-end QoS
Solution Approach 2:
The WLAN controller is designed to handle multiple QoS-related functions including parameter translation, traffic flow classification, and enforcement coordination, making it a universal management entity that can support various 5G network slices and service types through a single platform
3Reliability
If traffic prioritization and resource allocation are implemented, then QoS for critical services like URLLC is improved, but processing overhead increases
Solution Approach 1:
The patent implements preliminary QoS parameter configuration and traffic flow classification at the WLAN controller before traffic reaches the access points. By pre-establishing QoS policies and mapping rules, the system minimizes real-time processing overhead at the AP level, enabling fast QoS enforcement for time-critical services like URLLC
Data Source
AI summary
This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for managing access in a wireless local area network (WLAN) to support the quality of service (QoS) associated with a service of a wireless communication system. In one aspect, an access device may create a traffic flow between a station (STA) of the WLAN and Na network slice of the wireless communication system. The access device (such as a 5G customer premises equipment (5G-CPE)) may route traffic between the network slice and the STA based on the QoS associated with the network slice. Thus, in some implementations, the QoS for the network slice can be extended into the WLAN.