Relay UE Multicast Paging for Remote Units
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Solution Overview
Problem
In mobile communication networks, remote UE devices with a direct mobile connection to a relay UE face challenges in being paged efficiently, as the relay UE must monitor multiple paging occasions and requires knowledge of the remote UE's IMSI and DRX cycles, placing an additional burden and potentially violating privacy by sharing sensitive information.
Innovation Solution
The system enables paging of remote UE devices by communicating with the mobile network, establishing a direct mobile connection, and using a multicast address to transmit paging messages, allowing the relay UE to multicast messages without needing to know the remote UE's IMSI or DRX cycles, thereby reducing the burden on the relay UE and maintaining privacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the relay UE monitors multiple paging occasions of the remote UE, then the remote UE can be paged, but the relay UE complexity and burden increase
Solution Approach 1:
The network introduces an intermediary paging mechanism where the network sends paging messages to the relay UE, which then forwards them to the remote UE. This intermediary approach allows the relay UE to page the remote UE without needing to independently monitor multiple paging occasions or calculate paging times, thus reducing relay UE complexity while maintaining paging reliability.
2Ease of operation
If the relay UE knows the IMSI and DRX cycles of the remote UE, then paging occasions can be calculated, but privacy is violated by sharing sensitive information
Solution Approach 1:
The invention extracts the sensitive IMSI and DRX cycle information from the relay UE's knowledge scope. Instead of the relay UE needing to know these sensitive parameters to perform paging, the network handles the paging message generation and delivery using this information, while the relay UE only receives and forwards the paging message without accessing the underlying sensitive data.
3Reliability
If the relay UE monitors multiple paging occasions, then paging coverage is improved, but energy consumption increases
Solution Approach 1:
The network acts as an intermediary that manages paging occasion monitoring centrally. The network sends paging messages to the relay UE at appropriate times based on the remote UE's paging configuration, eliminating the need for the relay UE to independently monitor multiple paging occasions. This reduces the relay UE's energy consumption while maintaining comprehensive paging coverage through the network's coordinated approach.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for paging a remote unit that has a direct mobile connection to a relay unit. One apparatus includes a processor, a first transceiver that communicates with a mobile network, and a second transceiver that communicates with a remote unit via a direct mobile connection. The processor transmits a multicast address to the remote unit via the direct mobile connection. The processor determines to page the remote unit based on signaling from the mobile network. The processor also transmits a paging message for the remote unit to the multicast address.