System Information Transmission via Random Access Signaling
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Solution Overview
Problem
Current systems for transmitting system information in high-frequency networks, such as 5G, face inefficiencies due to excessive signaling waste caused by broadcasting system information using beamforming technology, leading to poor energy efficiency and increased system overhead.
Innovation Solution
A method where a terminal requests system information by sending a random access message carrying a system information request to a base station, and the base station responds with the necessary system information using an existing random access message, thereby reducing redundant signaling and improving energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If system information is broadcast using beamforming technology in high-frequency networks, then system information can be transmitted to terminals, but signaling waste increases and energy efficiency deteriorates
Solution Approach 1:
The patent extracts only the necessary system information that terminals need to acquire, rather than broadcasting all system information blocks. Terminals send specific requests for required SIBs, and the base station responds only with the requested information, eliminating transmission of unnecessary data and reducing energy consumption.
Solution Approach 2:
Terminals autonomously determine which system information blocks they need and actively request only those specific blocks from the base station. This self-service approach allows terminals to obtain necessary information without relying on comprehensive broadcasts, thereby reducing signaling overhead and energy waste.
2Reliability
If system information is broadcast using beamforming technology, then system information can be transmitted, but system overhead increases
Solution Approach 1:
The patent extracts and transmits only the specific system information blocks that terminals request, rather than broadcasting the complete set of system information. This selective transmission approach significantly reduces system overhead by eliminating unnecessary information blocks from the transmission stream.
Solution Approach 2:
Instead of the base station proactively broadcasting all system information to all terminals, the patent inverts the approach by having terminals actively request specific information they need. This request-response mechanism reduces system overhead by transmitting only essential information.
Data Source
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AI summary
The present disclosure belongs to the field of communications technologies, and relates to a method and an apparatus for transmitting system information. The method includes: sending, in a random access process, a random access message III carrying a system information request to a base station, where the system information request is used to request for system information; receiving a random access message IV carrying the system information and sent by the base station; and reading the system information from the random access message IV. The present disclosure resolves a problem of signaling waste caused by broadcasting, by the base station, the system information to the terminal by using the beamforming technology for many times and a problem of signaling waste caused by sending, by the terminal, a single system information request to the base station and sending, by the base station, a single piece of system information to the terminal in reply, and produces an effect of saving signaling.