Local ID Management for Remote UE Relay in Wireless Systems
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Solution Overview
Problem
Current wireless communication systems, such as LTE, face challenges in managing local IDs for remote UEs in relay scenarios, particularly when UEs are out of network coverage, requiring efficient methods to identify and communicate with each other directly for enhanced service availability and coverage.
Innovation Solution
The proposed solution involves a method for managing local IDs in wireless communication systems, where remote UEs derive and use local identifiers for communication with the network and other UEs, using techniques such as hashing or modifying existing identifiers, to facilitate seamless communication and relay operations, especially in out-of-coverage scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs communicate directly in relay scenarios without network coverage, then service availability is improved, but identification and management of remote UEs becomes more complex
Solution Approach 1:
The patent segments the identification system into two parts: a global UE ID for network identification and a local ID for relay-specific identification. This segmentation allows direct communication between UEs in relay scenarios while maintaining network management capabilities, resolving the contradiction between service availability and identification complexity.
Solution Approach 2:
The patent introduces a relay UE as an intermediary that manages local ID mapping between remote UEs and the network. The relay UE maintains a mapping table that associates local IDs with global UE IDs, enabling simplified direct communication while the intermediary handles the complexity of identification management.
2Productivity
If local IDs are derived using hashing or modification techniques, then communication efficiency is improved, but the risk of ID collision increases
Solution Approach 1:
The patent implements a feedback mechanism where the relay UE monitors for ID collisions among derived local IDs. When a collision is detected, the system generates alternative local IDs until uniqueness is achieved. This feedback loop maintains communication efficiency through rapid ID derivation while ensuring reliability by eliminating collisions.
Solution Approach 2:
The patent performs preliminary collision detection and resolution before establishing communication. The relay UE checks for ID uniqueness in advance and resolves any conflicts before the remote UE begins communication, preventing efficiency losses due to collisions during active communication.
Data Source
AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing management of local id identifying a remote UE in a relay UE in wireless communication system, the method comprising: generating a local ID identifying a remote UE of which transmits/receives data to/from a eNB via the relay UE, wherein the generated local ID is derived from RAT specific ID which is acquired during discovery procedure and linking process between the remote UE and the relay UE; receiving RRC connection request message from the remote UE; and transmitting the RRC connection request message for the remote UE using the generating local ID to the eNB.