On-Demand System Information Delivery in Wireless Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently delivering system information, particularly in scenarios where not all UEs require the information, leading to resource wastage and increased latency for UEs seeking to connect.
Innovation Solution
Implementing an on-demand method for delivering system information, where UEs can request specific system information blocks (SIBs) and confirm receipt, allowing base stations to adjust transmission based on demand and acknowledgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If system information is broadcast continuously to all UEs, then all UEs can access the information, but resource wastage occurs and latency increases for UEs that already have the information
Solution Approach 1:
The patent extracts the system information delivery mechanism from the broadcast mode and transforms it into a unicast request-based mode. Instead of broadcasting to all UEs, the network only delivers system information blocks to specific UEs that request them, thereby eliminating resource wastage while maintaining delivery reliability for interested UEs.
Solution Approach 2:
The patent implements a feedback mechanism where UEs send requests for specific system information blocks they need, and the network responds by delivering only those requested blocks. This feedback loop ensures that information is delivered reliably to UEs that need it while avoiding unnecessary transmission to UEs that already have the information.
2Reliability
If system information is broadcast continuously, then all UEs receive the information, but latency increases for UEs seeking to connect
Solution Approach 1:
The patent transforms the static broadcast mechanism into a dynamic on-demand delivery system. The network dynamically adjusts its behavior based on UE requests, delivering system information blocks only when and where needed. This dynamic approach reduces latency for connecting UEs while maintaining reliable delivery through targeted transmission.
3Loss of energy
If on-demand system information delivery is implemented, then resource wastage is reduced, but device complexity increases due to request and acknowledgment mechanisms
Solution Approach 1:
The patent makes the existing UE and network elements perform multiple functions: UEs both receive and request system information, and the network both broadcasts and delivers on-demand. By making these elements multi-functional, the patent avoids adding separate dedicated components for on-demand delivery, thereby reducing the increase in device complexity while achieving resource efficiency.
Data Source
AI summary
Certain aspects of the present disclosure relate to methods and apparatus for reliable transmission of system information (SI). In some cases, a UE may send an indication to request SI in an on-demand manner. For example, a method for wireless communications by a UE may include determining system information (SI) desired by the UE is not currently being broadcast. The method for further include sending, in response to the determination, a first indication to request the SI, and sending a second indication to confirm reception of the requested SI or to indicate the UE has not received the requested SI after a time period.