5G Terminal BWP Switching for System Information Reception
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Solution Overview
Problem
In the 5G NR system, there is a challenge in efficiently sending and receiving system information between terminals and base stations, particularly when system information is not available on the currently activated bandwidth part (BWP), requiring a method to switch to a different BWP for successful information transmission.
Innovation Solution
The method involves a terminal sending a system information request to a base station on a first BWP, receiving switching information to switch to a second BWP, receiving system information on the second BWP, and sending an indication of successful receipt to the base station, while the base station sends system information through broadcast on the second BWP and receives confirmation from the terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal requests system information on the currently activated BWP, then the terminal can obtain system information, but the system information may not be available on the current BWP requiring additional BWP switching operations
Solution Approach 1:
The base station performs preliminary action by determining in advance whether the terminal can receive system information on the current BWP before the terminal actually requests it. This proactive determination prevents unnecessary BWP switching operations and ensures the terminal receives system information efficiently without time loss.
Solution Approach 2:
The invention implements feedback mechanism where the base station sends indication information to the terminal about whether system information can be received on the current BWP. This feedback allows the terminal to adjust its reception strategy accordingly, avoiding unnecessary BWP switching and improving overall system information reception reliability.
2Reliability
If the base station sends system information on a different BWP, then system information can be transmitted successfully, but the terminal must switch BWP which increases operation complexity
Solution Approach 1:
The invention introduces indication information as an intermediary between the base station and terminal. This intermediary carries information about whether system information can be received on the current BWP, allowing the terminal to make informed decisions without complex operations. The indication information mediates the interaction, simplifying the terminal's operation while ensuring reliable system information transmission.
3Reliability
If the terminal continuously monitors multiple BWPs for system information, then system information can be received reliably, but the energy consumption increases
Solution Approach 1:
The invention extracts and processes only the necessary indication information from the base station to determine whether system information can be received on the current BWP. By extracting this key information, the terminal avoids continuous monitoring of multiple BWPs and reduces energy consumption while maintaining reliable system information reception.
Solution Approach 2:
The terminal uses the indication information received from the base station to self-determine whether to switch BWP for system information reception. This self-service approach allows the terminal to make autonomous decisions based on the indication information, avoiding unnecessary BWP monitoring and reducing energy consumption while ensuring reliable reception.
Data Source
AI summary
The present disclosure provides a method for receiving system information, a method for sending system information, and devices and storage media thereof. The method for receiving system information, applied to a terminal, includes: sending, by the terminal, an SI request to a base station on a first BWP, where the SI request is used to request to obtain system information; receiving, by the terminal, first switching information sent by the base station, where the first switching information is used to instruct the terminal to switch to a second BWP to receive the system information; receiving, by the terminal, the system information on the second BWP; and after successfully receiving the system information, sending, by the terminal, first indication information to the base station, where the first indication information is used to indicate that the terminal has successfully received the system information.