Multi-Hop Sidelink Relay Data Routing for Extended PC5 Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sidelink relay operations in wireless communication systems are limited to single-hop configurations, which restrict their applicability in scenarios requiring extended coverage, necessitating support for multi-hop relay operations.
Innovation Solution
A method and device for implementing multi-hop sidelink relay operations through intermediate and last relay UEs, involving data processing methods that include receiving configuration information, controlling sidelink relay adaptation protocol data transfer, and determining egress links or RLC channels based on configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If single-hop sidelink relay operation is implemented, then device complexity is reduced, but coverage area is limited
Solution Approach 1:
The patent segments the relay operation into multiple hops, where data is transmitted through intermediate relay UEs rather than requiring a single direct relay connection. This segmentation allows coverage to be extended across multiple segments (hops) while keeping each individual relay node relatively simple.
Solution Approach 2:
The patent introduces intermediary relay UEs that act as mediators between the source UE and the destination UE. These intermediary nodes forward data packets, enabling multi-hop communication without requiring complex direct connections between endpoints.
2Adaptability or versatility
If multi-hop relay operation is supported, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal data processing approach where relay UEs can handle multiple functions: receiving configuration information, transferring SRAP data, determining egress links, and forwarding to child relay UEs. This multi-functional design allows the same device to adapt to different relay scenarios without requiring specialized hardware for each function.
Solution Approach 2:
The patent employs dynamic configuration information that allows relay UEs to adapt their behavior based on current network conditions. The configuration information includes parameters for SRAP data transfer and egress link determination that can be dynamically adjusted to optimize performance in different multi-hop scenarios.
3Reliability
If configuration information processing is implemented, then data transmission reliability is improved, but processing time increases
Solution Approach 1:
The patent implements preliminary configuration where relay UEs receive and process configuration information in advance before actual data transmission begins. This preliminary action includes receiving SRAP configuration, determining egress links, and preparing data transfer paths, which ensures reliable transmission when data actually needs to be sent.
Solution Approach 2:
The patent enables relay UEs to autonomously process configuration information and make decisions about data routing without requiring continuous network control. The relay UEs self-configure their SRAP entities and automatically determine appropriate egress links based on received configuration, reducing ongoing processing requirements.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided are a method and device for controlling a data processing operation using radio relay technology. The method for data processing of an intermediate relay user equipment (UE) includes receiving configuration information for processing data for a remote UE from a parent relay UE, controlling transfer of sidelink relay adaptation protocol (SRAP) data received from a receiving part of an SRAP entity on a PC5 interface to a transmitting part of the SRAP entity on the PC5 interface, and determining an egress link or an egress RLC channel for transmitting the data to a child relay UE based on the configuration information.