Remote UE–Relay UE Association Using a Common AMF for Paging
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Solution Overview
Problem
Existing 3GPP specifications do not clearly define how to efficiently link or associate a Remote UE with a Relay UE in wireless communication networks, particularly for efficient paging operations, which is crucial for power efficiency and resource utilization in both the Remote UE and Relay UE.
Innovation Solution
The method involves using a common Access and Mobility Management Function (AMF) to link a Remote UE and a Relay UE by aligning their paging parameters, allowing them to share the same AMF instance, thereby enabling efficient paging operations without the need for the network to know the linked status between the two UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Relay UE monitors its own paging offset only and paging for the Remote UE is sent from the wireless network in the Relay UE's PO, then the paging signaling can be received and processed by the Relay UE, but the Relay UE would need to monitor multiple paging occasions and relay paging messages, increasing power consumption and resource usage
Solution Approach 1:
The patent merges the paging operations of the Remote UE and Relay UE by aligning their paging parameters (PF offset and PF period) so that both UEs monitor the same paging occasion. This allows the network to send paging messages for both UEs simultaneously in a single PO, eliminating the need for the Relay UE to monitor multiple POs and reducing its power consumption while ensuring reliable paging delivery to both UEs.
Solution Approach 2:
The patent makes the paging occasion universal for both Remote UE and Relay UE by configuring them with the same PF offset and PF period. This single paging occasion serves dual purposes: it pages the Remote UE directly and also pages the Relay UE, which then relays the paging message to the Remote UE. This multi-functional approach ensures reliable paging delivery while minimizing the Relay UE's monitoring burden.
2Reliability
If the Relay UE monitors multiple paging occasions to page the Remote UE, then complete paging coverage is achieved, but the complexity of paging management increases and resource utilization decreases
Solution Approach 1:
The patent combines multiple paging operations into a single paging occasion by aligning the PF parameters of Remote UE and Relay UE. Instead of managing separate POs for each UE, the system uses one unified PO where the network sends paging messages for both UEs simultaneously, significantly simplifying paging management while maintaining complete paging coverage.
Solution Approach 2:
The patent creates a universal paging occasion that serves both the Remote UE and Relay UE. This single PO performs multiple functions: it pages the Remote UE directly and also pages the Relay UE, which then relays the message. This universal approach eliminates the need for complex multi-PO management while ensuring comprehensive paging coverage.
3Productivity
If the network links or associates the Remote UE with the Relay UE, then efficient paging can be enabled, but the network complexity increases due to the need to track linked status
Solution Approach 1:
The patent merges the paging configurations of Remote UE and Relay UE by aligning their PF offset and PF period parameters. This approach achieves efficient paging without requiring the network to explicitly track or manage linked status between UEs. The efficiency gain comes from both UEs monitoring the same PO, allowing the network to page them simultaneously with a single message.
Solution Approach 2:
The patent enables the paging system to self-configure by having the Remote UE and Relay UE independently determine their PF parameters based on their identities and the configured parameters. The UEs autonomously align their paging occasions without requiring complex network coordination or tracking of linked status, thereby achieving paging efficiency while minimizing network management complexity.
Data Source
AI summary
Methods of operating a radio access network node and a core network node to link a remote user equipment, RMUE, device to a relay user equipment, RLUE, device in a communications network are described. The radio access network node operates to receive a message that includes information corresponding to either the RMUE device or the RLUE device having a connection that is established between the radio access network node and the corresponding one of the RMUE device or the RLUE device and that uses a first access and mobility management function, AMF. The radio access network node further operates to link the RMUE device to the RLUE device using the first AMF. The core network node operates to receive a message that a first AMF includes data corresponding to the RLUE device and links the RMUE device to the RLUE device based on the message.