Relay Node System Information Filtering for Remote UE Power Savings
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Solution Overview
Problem
In wireless communication systems, remote UEs face challenges in efficiently obtaining system information, particularly in scenarios where they are out of coverage or in enhanced coverage, leading to increased power consumption and resource wastage due to the need to read repetitive broadcast information.
Innovation Solution
The implementation of a method where a UE-to-Network Relay (UTNR) node relays only necessary system information to remote UEs, using a combination of Uu and non-Uu interfaces, allowing UEs to request specific system information blocks and reducing the burden of reading unnecessary information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If remote UEs read repetitive broadcast system information from base station, then they can obtain necessary network access information, but power consumption increases and spectrum resources are wasted
Solution Approach 1:
The patent extracts only the necessary system information blocks that remote UEs need, rather than requiring UEs to read all repetitive broadcast information. The network identifies and provides specific SIBs relevant to remote UE operations, reducing the information processing burden and power consumption while maintaining reliable system information acquisition.
Solution Approach 2:
The patent introduces an intermediary mechanism where the network acts as a mediator between the broadcast system information and remote UEs. Instead of direct reading of repetitive broadcasts, the network identifies and provides the specific system information blocks needed by remote UEs, reducing both power consumption and spectrum resource usage while ensuring reliable information delivery.
2Reliability
If remote UEs read all broadcast system information blocks, then they ensure they have complete information, but resource wastage increases
Solution Approach 1:
The patent extracts and provides only the specific system information blocks that remote UEs actually need for their operations. The network identifies which SIBs are relevant to remote UE functionality and provides those selectively, ensuring information completeness for remote operations while avoiding transmission and processing of unnecessary information blocks, thus reducing spectrum resource wastage.
3Adaptability or versatility
If base station broadcasts all system information blocks, then all UEs can access necessary information, but power consumption and resource usage increase for remote UEs
Solution Approach 1:
The patent applies local quality by providing different system information delivery mechanisms for different UE types. For remote UEs specifically, the network identifies and provides only the relevant system information blocks needed for their operation, rather than broadcasting all SIBs. This localized approach ensures system information availability for remote UEs while significantly reducing their power consumption and resource usage.
4Reliability
If remote UEs continuously monitor broadcast channels for system information, then they stay synchronized with network, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by having the network proactively identify and provide the specific system information blocks that remote UEs need, rather than requiring UEs to continuously monitor broadcast channels. This advance provision of information maintains network synchronization for remote UEs while eliminating the need for continuous monitoring, thereby significantly reducing power consumption.
Data Source
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AI summary
Methods and apparatus are provided for providing system information to a remote/evolved remote UE (26) as well as methods and apparatus for a remote/evolved remote UE (26 ) to receive system information.