Multibeam 5G RMSI Scheduling via MIB CORESET
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Solution Overview
Problem
In 5G communication systems, there is a need for an effective method to transmit remaining minimum system information (RMSI) efficiently, particularly in multibeam-based systems, where existing methods lack clarity on how to schedule and transmit RMSI using master information blocks (MIB) and downlink control channel information (DCI).
Innovation Solution
A method is provided for a terminal and base station to transmit RMSI by checking and scheduling information within control resource sets (CORESETs) based on MIB, where the base station transmits MIB including information on CORESETs carrying scheduling information for RMSI, and the terminal receives this information to decode RMSI transmitted in the physical downlink shared channel (PDSCH).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RMSI is transmitted in multibeam-based system using existing methods, then transmission can be performed, but clarity on scheduling and transmission through MIB and DCI is lacking
Solution Approach 1:
The system information is segmented into MIB (Master Information Block) and RMSI (Remaining Minimum System Information), with MIB providing scheduling information for RMSI. This segmentation allows clear separation of functions: MIB carries essential scheduling parameters while RMSI carries detailed system information, resolving the contradiction by making scheduling clarity explicit through structured division.
Solution Approach 2:
The MIB is transmitted first and contains preliminary scheduling information (such as SIB1-RNTI, frequency domain resource assignment, time domain resource assignment) that prepares the terminal for subsequent RMSI reception. This preliminary action ensures that scheduling clarity is established before actual RMSI transmission, improving reliability while maintaining operational clarity.
2Productivity
If RMSI scheduling information is included in MIB, then efficient scheduling is achieved, but device complexity increases
Solution Approach 1:
Critical scheduling parameters are extracted from the full system information and placed in the compact MIB structure. Only essential scheduling information (frequency resources, time resources, RNTI) is included in MIB, while detailed RMSI content is transmitted separately. This extraction maintains scheduling efficiency while minimizing terminal processing complexity by limiting MIB to only necessary parameters.
Solution Approach 2:
The MIB is designed with localized, specific quality characteristics - it contains only the most critical scheduling parameters needed for RMSI acquisition, rather than complete system information. This local quality approach optimizes the MIB for its specific purpose (scheduling) while keeping terminal complexity low by avoiding unnecessary information processing.
Data Source
AI summary
Methods and systems related to a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE) are provided. An operation method of a terminal in a wireless communication system is provided, the method including checking information on at least one control resource set carrying scheduling information for scheduling remaining system information based on a master information block (MIB) received from a base station, checking the scheduling information in the at least one control resource set, and receiving the remaining system information based on the scheduling information.