Relay Radio Device Paging Early Indication Handling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sidelink relaying techniques for paging messages in 3GPP networks do not reliably ensure that relay devices can meet quality requirements, leading to potential failures in paging operations due to unsupported Early Paging Indications (PEI).
Innovation Solution
A method for sidelink relaying that selectively announces paging messages by considering the PEI capabilities of both relay and remote radio devices, ensuring that paging messages are correctly relayed even when PEI capabilities differ between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the network sends PEI for remote UE paging based on remote UE's PEI capability, then power saving is achieved for remote UE, but paging reliability deteriorates when relay UE does not support PEI
Solution Approach 1:
The relay UE acts as an intermediary that receives PEI from the network and forwards it to the remote UE via sidelink. This mediator approach allows the network to send PEI based on remote UE's capability while the relay UE translates and delivers it appropriately, resolving the contradiction between power saving and paging reliability.
Solution Approach 2:
The system changes the transmission parameter by sending PEI on the downlink to the relay UE regardless of the remote UE's PEI capability. The relay UE then determines whether to forward the PEI based on the remote UE's capability, allowing flexible adaptation that maintains both power saving and paging reliability.
2Productivity
If the network sends PEI for remote UE paging, then paging efficiency is improved, but unnecessary transmissions increase interference when relay UE does not support PEI
Solution Approach 1:
The relay UE provides feedback information about its PEI support capability to the network. Based on this feedback, the network dynamically adjusts whether to send PEI for remote UE paging, ensuring PEI is only transmitted when the relay chain can properly handle it, thus avoiding unnecessary transmissions and interference.
Solution Approach 2:
The system implements dynamic PEI transmission where the network adapts its paging strategy based on the relay UE's capability. When the relay UE supports PEI, the network sends PEI for efficient paging; when it doesn't support PEI, the network skips PEI transmission, avoiding interference while maintaining paging efficiency.
3Reliability
If relay UE always reads paging messages, then paging reliability is maintained, but energy consumption increases
Solution Approach 1:
The relay UE performs preliminary action by reading the PEI message before the actual paging message. Based on the PEI indication, the relay UE can skip reading the paging message when not needed, reducing energy consumption while maintaining reliability when paging is actually required.
Data Source
AI summary
A technique for relaying a paging message from a network node (300; 1800; 1912; 2020) to a remote radio device (200; 1700; 1991; 1992; 2030) is described. As to a method (400) aspect of the technique performed by a relay radio device (100; 1600; 1991; 1992; 2030), the paging message is received (404) on a downlink, DL (722), from the network node (300; 1800; 1912; 2020) at the relay radio device (100; 1600; 1991; 1992; 2030). The received (404) paging message is relayed (408) on a sidelink, SL (730), from the relay radio device (100; 1600; 1991; 1992; 2030) to the remote radio device (200; 1700; 1991; 1992; 2030). The paging message is selectively announced by a paging early indication, PEI, on the DL (722) from the network node (300; 1800; 1912; 2020) at the relay radio device (100; 1600; 1991; 1992; 2030) depending on whether the relay radio device (100; 1600; 1991; 1992; 2030) supports receiving of the PEI and/or independent of whether the remote radio device (200; 1700; 1991; 1992; 2030) supports receiving of the PEI.