Configured Grant Group Mapping to Reduce 5G Signaling Overhead
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Solution Overview
Problem
The existing 5G mobile communications systems face increased signaling overheads and power consumption due to the need for extensive activation and deactivation signaling of configured grant configurations for terminals, particularly in scenarios requiring high reliability and low latency.
Innovation Solution
A method for configured grant configuration that involves obtaining a mapping relationship between multiple configured grant configuration sets and indexes, and using downlink control information (DCI) to activate or deactivate specific configurations based on this mapping, reducing the need for extensive signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the network configures a plurality of configured grant configurations for the terminal, then the system can support multiple services and scenarios, but the signaling overhead increases and terminal power consumption increases
Solution Approach 1:
The patent merges multiple configured grant configurations into groups where a single DCI can activate or deactivate multiple configurations simultaneously. This is achieved by establishing a mapping relationship between DCI indicators and groups of configured grant configurations, allowing one signaling message to control multiple configurations that share common parameters such as time domain resources, frequency domain resources, and modulation and coding schemes.
Solution Approach 2:
The patent creates a universal activation mechanism where a single DCI format can serve multiple configured grant configurations through a mapping relationship. The DCI includes an indicator field that can point to different groups of configurations based on pre-established mapping rules, enabling one signaling structure to perform multiple activation functions across different service types and scenarios.
2Adaptability or versatility
If the network configures a plurality of configured grant configurations for the terminal, then the system can support multiple services and scenarios, but the terminal power consumption increases
Solution Approach 1:
The patent combines multiple configuration activations into a single terminal operation. When the terminal receives a DCI indicating a group of configured grant configurations, it activates all configurations in that group simultaneously through one processing operation rather than handling each configuration separately, thereby reducing the computational burden and power consumption associated with configuration management.
Solution Approach 2:
The patent performs preliminary grouping and mapping configuration before actual service activation. The network pre-establishes the mapping relationship between DCI indicators and groups of configured grant configurations, and pre-organizes configurations into groups with common parameters. This preliminary organization reduces the real-time processing requirements at the terminal when activations occur, lowering instantaneous power consumption during service deployment.
3Ease of operation
If extensive activation and deactivation signaling is used for configured grant configurations, then precise control over each configuration is achieved, but signaling overhead increases
Solution Approach 1:
The patent segments configured grant configurations into logical groups based on parameter similarities and service requirements. Each group can be independently activated or deactivated as a unit through DCI signaling. This segmentation maintains operational control precision by allowing selective activation of specific configuration groups while reducing signaling overhead compared to individual configuration control.
Solution Approach 2:
The patent applies partial action by activating or deactivating groups of configurations rather than requiring individual control of each configuration. This approach provides sufficient control precision for most scenarios where configurations with similar parameters can be managed together, while avoiding the excessive signaling required for complete individual control of every configuration parameter.
Data Source
AI summary
A method for configured grant configuration, a terminal, and a network-side device are provided. The method includes: receiving radio resource control (RRC) signalling transmitted by a network-side device, where the RRC signalling is used to configure a mapping relationship between a plurality of configured grant configuration sets and a plurality of indexes; receiving downlink control information (DCI) and determining, based on the mapping relationship, a configured grant configuration set corresponding to a target index that is indicated by the DCI; and deactivating configured grant configurations included in the configured grant configuration set that is determined.


