Dynamic MCS Table Selection for 5G URLLC and eMBB Services
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Solution Overview
Problem
Current 5G NR systems face challenges in dynamically configuring Modulation and Coding Scheme (MCS) tables for URLLC and eMBB services, as existing methods cannot meet the dynamic service transmission requirements, leading to inefficiencies in reliability and latency.
Innovation Solution
A dynamic configuration method that allows terminal devices to acquire and select the appropriate MCS tables based on scheduling information, reducing physical-layer signaling overhead and improving reliability by using implicit indication and pre-configured correspondence between scheduling information and MCS tables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-layer signaling is used to configure MCS tables for URLLC and eMBB services, then MCS configuration can be provided, but it cannot meet dynamic service transmission requirements
Solution Approach 1:
The patent applies dynamics by enabling the terminal to dynamically select between different MCS tables (first MCS table for eMBB, second MCS table for URLLC) based on service type indicators in scheduling information. This dynamic selection mechanism allows the system to adapt MCS configurations to different service requirements in real-time, resolving the contradiction between adaptability and reliability.
Solution Approach 2:
The patent changes the MCS table parameter based on service type. By configuring different MCS tables with different modulation and coding schemes and allowing dynamic selection between them based on service indicators, the system can optimize transmission parameters for each service type, achieving both dynamic adaptability and high reliability.
2Adaptability or versatility
If explicit MCS table indication is used in scheduling information, then dynamic selection is enabled, but physical-layer signaling overhead increases
Solution Approach 1:
The patent uses an intermediary approach by introducing a service type indicator as a compact signaling mechanism. Instead of explicit MCS table indication, the service type indicator indirectly indicates which MCS table to use (first table for eMBB, second table for URLLC), reducing signaling overhead while maintaining selection flexibility.
Solution Approach 2:
The patent applies local quality by using different indication mechanisms for different service types. The service type indicator provides localized, service-specific MCS table selection without requiring global explicit indication for all transmissions, thereby reducing overall signaling overhead while maintaining necessary flexibility.
Data Source
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AI summary
Disclosed are a dynamic configuration method, a terminal device, a network device and a computer storage medium. The method comprises: a terminal device receiving configuration information of at least two modulation and coding scheme (MCS) tables, wherein the configuration information is used for determining the at least two MCS tables; the terminal device receiving scheduling information sent by a network side; and the terminal device determining a target MCS table from the at least two MCS tables based on the scheduling information and the correlation between scheduling information and an MCS tables.