MIMO Layer Configuration for 5G Uplink Adaptability
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Solution Overview
Problem
Current 5G communication systems face challenges in efficiently providing services that require high data rates, massive machine-type communication, and ultra-reliability low-latency communication, particularly in supporting a large number of terminals and ensuring low latency and high reliability across various IoT applications.
Innovation Solution
The solution involves a method and apparatus for a terminal in a wireless communication system that receives configuration information for multiple uplink configurations, determines the maximum number of MIMO layers for each configuration, and transmits data using these layers to optimize MIMO performance for different service requirements, such as enhanced mobile broadband, massive machine-type communication, and ultra-reliability low-latency communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple uplink configurations are supported with different MIMO layer settings, then adaptability to diverse 5G services is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic MIMO layer configuration where the terminal can adaptively select different maximum MIMO layer values (first maximum value for normal uplink, second maximum value for supplementary uplink) based on the specific uplink configuration and service requirements. This dynamic adjustment allows the system to optimize performance for different 5G services (eMBB, mMTC, URLLC) without requiring fixed complex hardware for all scenarios simultaneously.
Solution Approach 2:
The patent segments the uplink transmission into two distinct configurations: normal uplink and supplementary uplink, each with its own MIMO layer parameters. By dividing the uplink into separate configurable entities with different maximum MIMO layer settings, the system achieves adaptability to diverse services while managing device complexity through modular configuration rather than monolithic design.
2Productivity
If MIMO layers are optimized for high data rate services, then productivity is improved, but latency may increase for ultra-reliability low-latency communication
Solution Approach 1:
The patent applies local quality by assigning different MIMO layer characteristics to different uplink configurations based on service requirements. For eMBB services requiring high data rates, higher MIMO layers are allocated to normal uplink. For URLLC services requiring low latency, the supplementary uplink can be configured with appropriate MIMO layer settings that prioritize latency performance. This localized optimization allows each service type to achieve its performance goals without compromising others.
Data Source
AI summary
A method of a terminal in a wireless communication system is provided. The terminal includes receiving, from a base station, configuration information for a first uplink and configuration information for a second uplink, determining a first maximum number of multi-input and multi-output (MIMO) layers for the first uplink, based on the configuration information for the first uplink, determining a maximum number of layers for a physical uplink shared channel (PUSCH) supported by the terminal to be a second maximum number of MIMO layers for the second uplink, and transmitting, to the base station, the PUSCH by using at least one of the first uplink or the second uplink, based on the determined first maximum number of MIMO layers and the second maximum number of MIMO layers.