MA-PDU Session Multi-Path Configuration for Wireless Relay
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Solution Overview
Problem
Current wireless communication systems face challenges in supporting multiple paths for Layer 3 user equipment (UE) to network relay, leading to reduced reliability and increased overhead due to inadequate mechanisms for configuring multi-access protocol data unit (MA-PDU) sessions.
Innovation Solution
The method involves receiving an indication to support multiple paths for a PDU session, establishing a MA-PDU session with a network entity over a direct path, and configuring it to include an indirect path via a relay wireless communication device associated with a non-3GPP interworking function (N3IWF), enabling efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single path is used for Layer 3 UE to network relay, then the communication path is simple, but reliability and throughput are reduced
Solution Approach 1:
The communication path is segmented into multiple independent paths (direct path and indirect path via relay UE). Each path can be configured separately with its own parameters, allowing the system to divide the communication task into manageable segments that can operate independently, thereby improving reliability without requiring complete redesign of the entire communication architecture
Solution Approach 2:
The patent introduces a new dimension of path selection by enabling multi-access PDU sessions that can simultaneously utilize both direct and indirect paths. This dimensional expansion from single-path to multi-path architecture allows the system to add redundancy and alternative routes without fundamentally changing the existing communication framework
2Productivity
If multiple paths are configured for MA-PDU session, then throughput and reliability improve, but overhead increases
Solution Approach 1:
Multiple paths are merged within a single MA-PDU session framework, allowing the direct path and indirect path to be managed together rather than as separate sessions. This merging approach enables efficient resource sharing and coordinated operation of multiple paths, improving throughput while minimizing the overhead that would result from managing completely independent paths
Solution Approach 2:
The MA-PDU session structure provides universal functionality that can accommodate multiple paths with different characteristics (direct and indirect). This multi-functional design allows a single session framework to handle diverse routing requirements, enabling improved throughput across multiple paths without requiring separate dedicated control mechanisms for each path type
3Adaptability or versatility
If indirect path via relay UE is added, then communication flexibility improves, but path configuration complexity increases
Solution Approach 1:
The path configuration is made dynamic by allowing the network to flexibly select between direct and indirect paths based on current network conditions. The MA-PDU session can dynamically adjust its routing behavior, adding or removing paths as needed, which improves adaptability while managing complexity through dynamic rather than static configuration
Solution Approach 2:
The relay UE acts as an intermediary that simplifies the addition of indirect paths. By using the relay UE's existing PDU session as a template, the network can create indirect paths without having to configure every detail from scratch, thereby improving communication flexibility while reducing the actual configuration complexity through reuse of established relay infrastructure
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a remote wireless communication device may receive an indication to support multiple paths for a protocol data unit (PDU) session. The remote wireless communication device may establish a multi-access PDU (MA-PDU) session with a network entity over a direct path. The remote wireless communication device may configure the MA-PDU session to include an indirect path via a relay wireless communication device and associated with a non-3GPP interworking function (N3IWF). The remote wireless communication device may communicate via the MA-PDU session. Numerous other aspects are described.