Sidelink QoS Mapping for End-to-End Reliability
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Solution Overview
Problem
Current wireless communication systems face challenges in maintaining quality of service (QoS) across different link types, particularly in sidelink communications, where QoS parameters for sidelink and Uu links are not correlated, leading to unreliable end-to-end (E2E) QoS.
Innovation Solution
The implementation of a method where remote UE and relay UE identify and map Quality of Service (QoS) parameters between sidelink and Uu connections, using a mapping between PQI and 5QI tables, to unify QoS parameters across different link types, enabling E2E QoS management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate QoS parameters are used for sidelink and Uu links, then each link can be optimized independently, but end-to-end QoS reliability deteriorates
Solution Approach 1:
The patent merges the QoS parameter sets of sidelink and Uu links by establishing a correlation mapping between PQI (sidelink) and 5QI (Uu) parameters. This allows unified QoS management across the entire end-to-end path while preserving link-specific optimization capabilities through the mapping relationship.
Solution Approach 2:
The patent introduces a QoS parameter mapping mechanism as an intermediary between sidelink and Uu link QoS management. This mapping acts as a mediator that translates and correlates parameters between the two different link types, enabling consistent end-to-end QoS enforcement.
2Device complexity
If QoS parameters are not correlated between link types, then implementation complexity is reduced, but communication quality deteriorates
Solution Approach 1:
The patent establishes a systematic parameter mapping that transforms QoS parameters from one link type to another. By defining correlation relationships between PQI and 5QI parameters, the system maintains parameter consistency across different link types while managing complexity through standardized transformation rules.
3Reliability
If E2E QoS mapping is implemented, then end-to-end quality consistency is improved, but parameter mapping complexity increases
Solution Approach 1:
The patent creates a universal QoS parameter mapping framework that can be applied across different link types and scenarios. The mapping mechanism serves multiple functions: parameter translation, QoS correlation, and end-to-end enforcement, reducing overall system complexity despite the added mapping functionality.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A remote user equipment (UE) may establish a first connection with a relay UE that is in communication with a base station via a second connection. The first connection may be of a first connection type and the second connection may be of a second connection type. The remote UE may identify a mapping between one or more first quality of service (QOS) parameters corresponding to the first connection type and one or more second QoS parameters corresponding to the second connection type. The remote UE may determine, using the mapping, a first QoS parameter to be applied to the first connection as part of an end-to-end (E2E) connection with the base station via the relay UE, and communicate with the base station via the relay UE using the E2E connection.