5G System Information Provisioning via Cell Barring and On-Demand OSI
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Solution Overview
Problem
The existing wireless communication systems face challenges in efficiently provisioning Minimum System Information (MSI) due to high signaling overhead and restrictive scheduling in 5G communication systems, particularly in higher frequency bands, which affects energy efficiency and user data scheduling flexibility.
Innovation Solution
A method for User Equipment (UE) to decode a Primary Broadcast Channel (PBCH) to acquire a first Master Information Block (MIB) and determine cell barring or acquire a second MIB on a Secondary Broadcast Channel (SBCH) based on cell barring indications, allowing for flexible cell selection and on-demand SI block provisioning, reducing unnecessary system information broadcasting and signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If system information is broadcasted periodically in 5G wireless communication systems, then all UEs can acquire necessary system information, but signaling overhead increases and energy efficiency deteriorates
Solution Approach 1:
The patent segments system information into two categories: Minimum System Information (MSI) containing essential parameters for initial access and cell selection, and Other System Information (OSI) containing non-essential parameters. MSI is broadcasted periodically to ensure all UEs can acquire necessary information for basic operations, while OSI is provided on-demand only to UEs that require it. This segmentation reduces the frequency and volume of periodic broadcasts, thereby reducing signaling overhead and improving energy efficiency while maintaining reliability for essential system information acquisition.
2Reliability
If system information is broadcasted frequently to ensure availability, then UEs can always access up-to-date information, but signaling overhead and network resource consumption increase
Solution Approach 1:
The patent extracts non-essential system information parameters from the periodic broadcast and places them in the OSI category. Only essential parameters necessary for initial access, cell selection, and basic communication are retained in MSI and broadcasted periodically. The extracted OSI parameters are made available on-demand through UE requests. This extraction reduces the amount of data that must be broadcasted frequently, thereby reducing signaling overhead and network resource consumption while maintaining system information availability for essential operations.
3Adaptability or versatility
If all system information blocks are provided periodically, then UEs have complete information for all scenarios, but scheduling flexibility and energy efficiency worsen
Solution Approach 1:
The patent implements a dynamic system information provisioning mechanism where the network can adaptively respond to UE requirements. UEs that need complete system information for specific scenarios can request OSI blocks on-demand, and the network dynamically allocates resources to provide the requested information. This dynamic approach replaces the static periodic broadcast of all system information with a flexible on-demand mechanism, improving scheduling flexibility and energy efficiency while maintaining information completeness for UEs that require it.
Data Source
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AI summary
Accordingly the embodiments herein provide a method for provisioning Minimum System Information (MSI) for User Equipment (UE) in a wireless communication system. The method includes decoding Primary Broadcast Channel (PBCH) to acquire a first Master Information Block (MIB) periodically transmitted by base station. Further, the method includes determining to perform one of bar a cell from which the first MIB is acquired for a pre-determined period of time and acquire second MIB transmitted on Secondary Broadcast Channel (SBCH) by base station based on cell barring indication received in the first MIB. Furthermore, the method includes transmitting a request message to the base station to obtain at least one SI block of the OSI. In some embodiments, the method includes receiving a list of system configuration indexes (SCIs) and corresponding configuration of SI blocks, from the base station based on SI storage capability of the UE indicated to the base station.