SS Block Broadcast Channel Scrambling for Time Index Accuracy
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Solution Overview
Problem
In 5G wireless communication systems, the lack of error detection for the NR-TSS in synchronization signal blocks leads to delays and incorrect initial access procedures due to potential errors in detecting the time index, causing system information decoding issues and unnecessary overhead.
Innovation Solution
A method involving scrambling of system information using a pseudo-random sequence generated based on the time index provided by the NR-TSS, allowing for early accuracy checking of the received time index through error-detection codes, thereby preventing incorrect initial access and reducing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If error detection is not implemented for NR-TSS time index detection, then the system avoids adding complexity and overhead, but delays and incorrect initial access procedures occur due to potential detection errors
Solution Approach 1:
The patent uses the system information as an intermediary carrier to convey error detection capability. By scrambling the system information with a sequence generated from the time index, the system enables error detection without adding a separate error detection channel, thus maintaining reliability while avoiding additional complexity
Solution Approach 2:
The system information serves a dual purpose: it carries both the actual system information and the error detection function for the time index. This self-service approach allows the existing system information to perform error detection, eliminating the need for separate error detection mechanisms
2Reliability
If error detection is not implemented for NR-TSS time index detection, then the system maintains simple processing, but system information decoding errors and unnecessary overhead occur
Solution Approach 1:
The patent performs error detection preliminarily during the system information reception phase. By checking the error detection code immediately after receiving system information, the system can identify time index errors before they propagate to subsequent access procedures, preventing delays
Solution Approach 2:
The error detection code provides feedback about the accuracy of the time index. This feedback mechanism allows the system to verify time index correctness and take corrective action, improving reliability without significant time loss
Data Source
AI summary
The disclosure relates to a method performed by a wireless device, for receiving system information from a network node of a wireless communication system. The system information is received in a synchronization signal (SS) block of an SS burst set comprising at least one SS block. The system information is multiplexed with information providing a time index indicating which SS block of the SS burst set that is being received. The method comprises receiving the information providing the time index, and receiving the system information, which comprises descrambling the system information using a scrambling sequence generated based on the information providing the time index. The method also comprises determining an accuracy of the information providing the time index, based on an error-detection code related to the received system information. The disclosure also relates to corresponding network node method and apparatus.