System Information Request Feedback Mechanism
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Solution Overview
Problem
In wireless communication networks, user equipment (UE) may unnecessarily monitor for system information requests, leading to battery drain and increased latency due to uncertainty about detection of SI requests by the gNB, as UE may not receive feedback on request status.
Innovation Solution
The system includes a transmitter that sends feedback responses indicating receipt of system information requests, allowing the UE to monitor for a predetermined time and retransmit requests if no response is received, with options for increased power retransmissions and use of predefined values in downlink control information for feedback indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE monitors for system information requests continuously, then system information delivery reliability is improved, but battery consumption increases and latency increases due to unnecessary monitoring
Solution Approach 1:
The gNB sends feedback information to the UE indicating whether the SI request was successfully received. This feedback mechanism allows the UE to determine whether to continue monitoring or stop monitoring, thereby avoiding unnecessary battery consumption while ensuring reliable SI delivery when the request is actually received
2Reliability
If UE monitors for system information requests continuously, then system information delivery reliability is improved, but latency increases due to unnecessary monitoring
Solution Approach 1:
The feedback information from gNB to UE provides timely confirmation of SI request reception status, enabling the UE to stop monitoring after receiving the SI or to retransmit the request if not received, thereby reducing unnecessary latency caused by continuous monitoring
3Productivity
If feedback mechanism is implemented, then communication efficiency is improved, but device complexity increases
Solution Approach 1:
The feedback mechanism uses existing downlink control channels and standardized message formats to convey SI request reception status, minimizing additional complexity while significantly improving communication efficiency by enabling accurate UE behavior control
Solution Approach 2:
The feedback information acts as an intermediary signal between gNB and UE, using existing communication infrastructure to transmit reception status without requiring complex new protocols or mechanisms, thus improving efficiency with minimal complexity increase
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for sending and/or receiving feedback for a system information request. One apparatus includes a transmitter that transmits information indicating a request for system information. The apparatus includes a processor that monitors, during a predetermined time period, for a feedback response indicating that the request for the system information was received.