U2U Sidelink Relay Error Handling for Reliable Packet Routing
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Solution Overview
Problem
Existing 5G wireless communication systems face challenges in handling errors and misconfigurations in user-to-user (U2U) sidelink relay networks, particularly in the UE-to-UE relay scenario, where data packets may be incorrectly routed or misidentified, leading to inefficiencies and potential network disruptions.
Innovation Solution
A method and apparatus for U2U sidelink relay networks that involve identifying local IDs of remote UEs and verifying UE IDs in data packets, discarding erroneous packets to prevent incorrect routing and maintain network integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If U2U sidelink relay networks are deployed to extend coverage and support new services, then network capability and service support are improved, but error handling and packet routing reliability deteriorate due to lack of standardized error management mechanisms
Solution Approach 1:
The patent applies preliminary action by establishing error handling rules and packet verification mechanisms before data transmission occurs. The source UE pre-configures error detection parameters and the relay UE pre-establishes verification procedures for received packets, enabling proactive error prevention rather than reactive correction, thus maintaining routing reliability while supporting network expansion
Solution Approach 2:
The patent implements feedback mechanisms where receiving UEs verify packet integrity and provide implicit feedback through packet acceptance or rejection decisions. The system uses feedback loops where error conditions are detected, verified against predefined rules, and trigger appropriate actions such as packet discarding or retransmission requests, ensuring reliable routing in extended network configurations
2Reliability
If packet verification and error handling procedures are implemented in U2U sidelink relay networks, then network reliability is improved, but processing complexity and operational overhead increase
Solution Approach 1:
The patent applies local quality by implementing error handling and verification procedures selectively at specific network nodes (source UE, relay UE, destination UE) rather than uniformly across all devices. Each node performs verification appropriate to its role and receives packets, reducing overall system complexity while maintaining reliability at critical points in the data transmission path
Solution Approach 2:
The patent implements a discarding mechanism where verified erroneous packets are systematically discarded according to predefined error handling rules. This approach prevents erroneous packets from propagating through the network while avoiding complex recovery procedures, thereby maintaining reliability through selective packet rejection rather than extensive error correction mechanisms
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a first UE in a wireless communication system includes identifying ID information including a local ID of a first remote UE and a local ID of a second remote UE, the local IDs being used for a U2U sidelink in a SRAP; receiving, from a second UE, a data packet with a UE ID, wherein the UE ID includes a destination UE ID indicating a destination of the data packet and a source UE ID indicating a source of the data packet; determining whether the received data packet is an erroneous data packet, based on the identified ID information and the UE ID; and discarding the received data packet, in case that the received data is determined as the erroneous data packet.