Multi-Hop Sidelink Paging Control Through Relay UE Hierarchies
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Solution Overview
Problem
Existing sidelink relay operations in NR are limited to single-hop configurations, which restrict their applicability in scenarios requiring extended coverage, necessitating support for multi-hop relay operations, particularly for paging control in sidelink communication.
Innovation Solution
A method and device for controlling paging through multi-hop sidelink relay operations, involving intermediate and last relay UEs to manage and transmit paging messages across multiple hops, ensuring accurate identification and delivery of paging records.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If single hop sidelink relay operation is used, then device complexity is reduced, but coverage area and applicability are limited
Solution Approach 1:
The relay path is segmented into multiple hops with each relay UE responsible for a specific segment. The patent divides the end-to-end relay communication into multiple discrete hops, where each relay UE forwards messages to the next hop, enabling extended coverage while maintaining manageable complexity at each segment level.
Solution Approach 2:
The patent introduces a hierarchical dimension to relay operations by distinguishing between intermediate relay UEs and last relay UEs. This dimensional differentiation allows the system to manage multi-hop relay through layered responsibilities, where intermediate relays forward messages and last relays handle final delivery to remote UEs.
2Adaptability or versatility
If multi-hop relay operation is implemented, then coverage area is extended, but device complexity increases
Solution Approach 1:
Different relay UEs are assigned different local qualities and responsibilities. Intermediate relay UEs perform specific forwarding functions with simplified logic, while last relay UEs handle final message delivery and identification. This local differentiation reduces overall system complexity by assigning targeted functions to each component.
Solution Approach 2:
The patent introduces intermediary relay UEs that act as mediators between the base station and remote UEs. These intermediate relays simplify the paging control process by receiving paging messages from the base station and forwards them to appropriate last relays, which then deliver to remote UEs, thereby managing complexity through intermediary layers.
3Reliability
If multi-hop relay is used for paging control, then coverage is enhanced, but message delivery reliability becomes more challenging
Solution Approach 1:
The patent implements feedback mechanisms where relay UEs confirm receipt and forwarding of paging messages. Last relay UEs verify identification information matching between paging messages and remote UE records, providing feedback loops that ensure reliable message delivery across multiple hops while maintaining accuracy through verification.
Data Source
AI summary
Provided are methods for controlling a paging operation using a wireless relay technology by relay UEs providing a multi-hop relay operation in a sidelink network. The method may include receiving, from a child relay UE, a message for paging reception of a remote UE, transferring the same to a parent relay UE, receiving a paging record from the parent relay UE, and transferring the same to the child relay UE.