Configured Grant Activation for Flexible Uplink Signal Transmission
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in signal transmission and reception procedures, particularly in managing configured grant configurations for uplink data transmission and reception.
Innovation Solution
A method and apparatus for efficiently managing configured grant configurations by activating a first CG configuration through uplink transmission of control information, utilizing physical uplink control channels and medium access control elements, including modulation and coding scheme information and packet delay budget details.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple configured grant configurations are maintained for uplink data transmission, then transmission flexibility and adaptability are improved, but device complexity and management overhead increase
Solution Approach 1:
The patent segments the configured grant configuration management by dividing multiple CG configurations into separate, independently manageable entities. Each CG configuration can be individually activated, deactivated, and managed through specific MAC CE commands, allowing the system to handle multiple configurations without overwhelming complexity by treating them as discrete segments rather than a monolithic structure.
Solution Approach 2:
The patent implements preliminary action by pre-configuring multiple CG configurations in advance through RRC signaling before actual uplink transmission is needed. These pre-configured grants are stored and can be rapidly activated when required, eliminating the need for complex real-time configuration decisions during transmission moments, thus reducing operational complexity while maintaining flexibility.
2Speed
If configured grant configurations are activated through uplink control information transmission, then transmission speed and responsiveness are improved, but power consumption and energy usage increase
Solution Approach 1:
The patent implements periodic action through the use of periodic configured grant transmissions where uplink data can be sent at predetermined intervals without requiring continuous activation commands. The MAC CE activation commands trigger periodic transmission patterns, allowing the system to achieve fast activation speed while reducing overall power consumption by maintaining transmission during scheduled periods rather than requiring continuous active monitoring and transmission readiness.
3Measurement precision
If MAC control elements are used for activating configured grant configurations, then control precision and accuracy are improved, but protocol complexity and processing overhead increase
Solution Approach 1:
The patent applies local quality by designing the MAC CE structure with specialized, dedicated fields for specific configuration control functions. Rather than using generic control messages, the MAC CE includes targeted fields such as CG-Activation CID and CG-DT CID that directly address specific configuration parameters, providing precise control accuracy while reducing overall protocol complexity through localized, purpose-built control elements rather than comprehensive generic protocols.
Data Source
AI summary
According to at least one of embodiments disclosed in the present specification, a terminal may receive one or more configured grant (CG) configurations for uplink data transmission, and activate a first CG configuration selected by the terminal from among the one or more CG configurations. The terminal transmits a physical uplink shared channel (PUSCH) on the basis of the activated first CG configuration, and the terminal may activate the first CG configuration through uplink transmission of control information related to the first CG configuration.