SIB1 Scheduling via SSB for NR-IoT Power Saving
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Solution Overview
Problem
In the NR-IoT system, the process of obtaining system broadcast messages is cumbersome and power-intensive due to the need for multiple blind checks of the Physical Downlink Control Channel (PDCCH), which does not meet the power-saving requirements for NR-IoT user equipment (UE).
Innovation Solution
Configuring and carrying scheduling information of System Information Block (SIB1) in a Synchronization Signal Block (SSB) allows NR-IoT UE to obtain SIB1 without performing PDCCH blind checks, simplifying the detection process and reducing power consumption by eliminating the need for multiple PDCCH detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple blind checks of PDCCH are performed to obtain system broadcast messages, then the system message detection is reliable, but the power consumption increases and detection time lengthens
Solution Approach 1:
The base station pre-configures and indicates SIB1 scheduling information to the UE through SSB before the UE needs to detect system messages. This preliminary provision of scheduling information eliminates the need for multiple blind PDCCH checks, allowing the UE to directly access SIB1 at the indicated time-frequency resources, thus reducing power consumption while maintaining detection reliability
Solution Approach 2:
The SSB acts as an intermediary that carries SIB1 scheduling information from the base station to the UE. Instead of the UE directly performing blind checks on PDCCH, the scheduling information is transmitted through the SSB channel, which the UE has already synchronized to, thereby reducing the number of detection operations required and lowering power consumption
2Reliability
If multiple blind checks of PDCCH are performed to obtain system broadcast messages, then the system message detection is reliable, but the detection time lengthens
Solution Approach 1:
The base station pre-configures and indicates SIB1 scheduling information to the UE through SSB before the UE needs to detect system messages. This preliminary provision of scheduling information eliminates the need for multiple blind PDCCH checks, allowing the UE to directly access SIB1 at the indicated time-frequency resources, thus reducing detection time while maintaining detection reliability
Solution Approach 2:
The UE skips the multiple blind PDCCH check steps by directly using the scheduling information obtained from SSB to access SIB1. This skipping of intermediate detection steps significantly reduces the detection time while ensuring reliable system message acquisition
3Ease of operation
If SIB1 scheduling information is carried in SSB, then the detection process is simplified and power is saved, but the SSB structure becomes more complex
Solution Approach 1:
The SSB is designed to serve multiple functions: it provides synchronization signals, system information, and now also carries SIB1 scheduling information. By making the SSB multi-functional, the patent avoids creating additional separate channels or structures, thereby simplifying the overall detection process while the complexity is managed within the existing SSB framework
Data Source
AI summary
A method and apparatus for information processing. The method includes: configuring scheduling information of an SIB1 for a first-type UE; sending the scheduling information of the SIB1 to the first-type UE by carrying the scheduling information of the SIB1 in an SSB, such that the first-type UE receives the SIB1 on the basis of the scheduling information of the SIB1.