U2U Relay Local Identifier Mapping Tables
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Solution Overview
Problem
Current U2U relay communication technologies face challenges in efficiently managing terminal-to-terminal relay communications, particularly in ensuring unique local identifiers for hops and minimizing protocol overhead, while supporting multi-hop relays and robustness against identifier modifications.
Innovation Solution
The solution involves a processor-based apparatus that maintains mapping tables to manage unique local identifiers for each hop in U2U relay communications, allowing for efficient setup and data forwarding across multiple hops, and includes mechanisms for identifier reassignment and coordination between relay UEs to maintain end-to-end connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mapping tables are maintained to manage unique local identifiers for each hop, then reliability of identifier management is improved, but device complexity increases
Solution Approach 1:
The patent segments the identifier management function by introducing separate mapping tables (first mapping table and second mapping table) that are distributed at different relay terminals. Each relay terminal maintains only the mapping table relevant to its position in the relay chain, rather than maintaining a complete end-to-end mapping. This segmentation reduces the complexity at each individual relay terminal while maintaining overall system reliability through coordinated mapping management across multiple relay nodes.
2Adaptability or versatility
If multi-hop relays are supported with coordinated identifier management, then adaptability of relay communications is improved, but protocol overhead increases
Solution Approach 1:
The patent applies local quality by allowing each relay terminal to independently manage and generate local identifiers for its specific hop, rather than requiring centralized coordination of all identifiers. Each relay terminal creates unique local identifiers for the links it manages and maintains only the necessary mapping information locally. This approach enables multi-hop relay adaptability while minimizing protocol overhead by eliminating the need for extensive end-to-end identifier coordination and reducing the scope of mapping tables at each relay node.
Data Source
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AI summary
Method comprising: for a U2U relay communication between UE1 and UE2: - determining a first local identifier (LID) such that the first LID is unique among all LIDs associated, in a mapping table, with an identifier of a first hop; - storing, in the mapping table, a first mapping information mapped to a U2U relay communication ID, wherein the first mapping information comprises the identifier of the first hop associated with the first LID; and - instructing to set up a portion of a connection for the U2U relay communication via the first hop, wherein the instruction comprises the first LID; supervising whether UE1 intends to transmit data of the U2U relay communication to UE2; identifying, based on the U2U relay communication ID, an identified mapping information comprising an identifier of an egress hop associated with an identified LID, wherein the identified mapping information is mapped in the mapping table to the U2U relay communication ID; and transmitting the data comprising the identified LID on the egress hop.