System Information Scheduling for Selective UE SIB Requests
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Solution Overview
Problem
The existing LTE system wastes resources and consumes energy due to the periodic broadcasting of unnecessary system information, which is not required by all user equipment (UE), leading to inefficient resource utilization.
Innovation Solution
A method where user equipment (UE) and base stations exchange information about system information blocks (SIBs) including scheduling and broadcast indication, allowing UE to request specific SIBs only when needed, thereby reducing unnecessary broadcasts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station periodically broadcasts all system information blocks (SIBs) to ensure UE can acquire information at any time, then the UE can reliably obtain necessary system information, but this results in low resource utilization and high energy consumption due to continuous broadcasting on specific downlink resources
Solution Approach 1:
The patent extracts only the necessary SIBs that the UE actually needs based on its capabilities and the current network conditions, rather than broadcasting all SIBs periodically. The base station determines which SIBs are required and sends them selectively, removing the unnecessary broadcasting overhead while ensuring the UE receives the essential system information.
Solution Approach 2:
The patent implements dynamic SIB broadcasting where the base station adjusts the broadcasting behavior based on real-time conditions. Instead of fixed periodic broadcasting, the system dynamically determines whether to broadcast SIBs based on UE requests, network state, and capability matching, making the broadcasting adaptive and efficient.
2Reliability
If the base station periodically broadcasts all system information blocks (SIBs) to ensure UE can acquire information at any time, then the UE can reliably obtain necessary system information, but this results in low resource utilization due to continuous occupation of specific downlink resources
Solution Approach 1:
The patent extracts and transmits only the specific SIBs that are necessary for the UE's operation, removing redundant information from the broadcast. This selective transmission frees up downlink resources that would otherwise be occupied by unnecessary SIB broadcasts, improving overall resource utilization while maintaining reliability.
Solution Approach 2:
The patent applies partial action by broadcasting only the subset of SIBs that are actually needed rather than the complete set. This partial broadcasting approach suffices for UE operation and releases resources for other purposes, achieving better productivity without compromising the UE's ability to acquire necessary information.
3Device complexity
If the base station broadcasts SIBs based on supported features rather than UE-specific needs, then the broadcasting process is simplified, but unnecessary information is transmitted leading to wasted resources and energy
Solution Approach 1:
The patent introduces a feedback mechanism where the UE indicates its capabilities and information needs to the base station. Based on this feedback, the base station determines which SIBs to broadcast, creating a closed-loop system that adapts to actual UE requirements. This feedback-driven approach reduces unnecessary broadcasting while maintaining manageable complexity through standardized procedures.
Solution Approach 2:
The patent performs preliminary determination of which SIBs are needed based on UE capabilities before actual broadcasting occurs. The base station pre-assesses the UE's requirements and prepares the appropriate SIB set, avoiding unnecessary broadcasting from the outset. This preliminary action reduces energy consumption by preventing wasteful transmissions.
4Device complexity
If the base station broadcasts SIBs based on supported features rather than UE-specific needs, then the broadcasting process is simplified, but unnecessary information is transmitted leading to wasted resources
Solution Approach 1:
The patent uses feedback from the UE regarding its capabilities and needs to guide the base station's SIB broadcasting decisions. This feedback mechanism enables the system to transmit only necessary SIBs, improving resource utilization while keeping the broadcasting process relatively simple through standardized feedback handling and decision logic.
Solution Approach 2:
The patent performs preliminary assessment of UE needs before broadcasting, determining which SIBs are actually required. This pre-planning approach improves resource utilization by avoiding unnecessary transmissions while maintaining broadcasting process simplicity through systematic evaluation criteria.
Data Source
AI summary
The present application provides a method executed by a user equipment, comprising: receiving a first system information (SI) message, wherein the first system information (SI) message comprises type information related to a system information block (SIB) and scheduling information of a second system information (SI) message to which the type of the SIB belongs, and the scheduling information comprises a time when the second SI message appears and indication information indicating whether the second SI message is broadcast; and if the indication information indicates that the second SI message is not broadcast, sending an SI request message, and receiving a needed system information block (SIB) according to the scheduling information in the received first SI message. The present application further provides a corresponding user equipment and base station. By means of the present invention, unnecessary overheads are avoided and system resources are saved while meeting the demand of a UE acquiring information.