Grant-Free Uplink Decoding via Independent Resource Segmentation
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Solution Overview
Problem
In 5G New Radio systems, grant-free uplink transmission without base station grant requires complex receiving mechanisms for the network device to decode data from terminal devices, as the base station is unaware of the specific physical resources used by the terminal.
Innovation Solution
Terminal devices map and independently encode data onto multiple transmission resources, allowing the network device to decode each resource independently without needing to determine the resource positions, thereby reducing receiving complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If grant-free uplink transmission is used, then control signaling overhead is reduced and transmission delay is reduced, but the network device requires complex receiving mechanisms to decode data
Solution Approach 1:
The patent segments the uplink transmission into multiple independent transmission resources (time resources, frequency resources, or code resources). Each transmission resource carries data independently encoded with its own modulation and coding scheme. This segmentation allows the network device to decode each resource separately using predetermined rules, eliminating the need for complex unified decoding mechanisms while maintaining grant-free transmission efficiency.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple transmission resources and their corresponding encoding parameters before the actual data transmission. The terminal device selects from these pre-defined resources and encodes data according to predetermined rules. The network device uses these pre-established rules to decode the data without requiring real-time complex analysis, thus reducing receiving mechanism complexity while maintaining high transmission efficiency.
2Ease of operation
If the base station does not know the specific physical resources adopted by the terminal, then grant-free transmission can be implemented, but the network device requires complex receiving solutions
Solution Approach 1:
The patent creates a universal receiving mechanism that can handle data from multiple terminals on different transmission resources using a single standardized decoding process. The network device uses predetermined rules that work for all transmission resources, making the receiving solution simple and universal rather than requiring complex terminal-specific analysis for each resource.
Solution Approach 2:
The patent introduces transmission resources (time, frequency, or code dimensions) as intermediaries that bridge the terminal's autonomous transmission choices and the network device's standardized receiving mechanism. These intermediaries carry encoded data in a structured format that translates terminal autonomy into network-friendly formatted data, allowing simple unified decoding without complex receiving solutions.
Data Source
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AI summary
A data transmission method, a network device and a terminal device are provided. The method includes that: a network device receives (230) data which is transmitted by a terminal device on multiple transmission resources without grant; and the network device independently decodes (240) the data on each transmission resource in the multiple transmission resources. In such a manner, the network device independently decodes the data received on each transmission resource, so that when uplink transmission without grant is performed by a terminal device, the network device does not need to acquire a position of the each transmission resource for unified decoding after receiving the data which is transmitted by the terminal device on the each transmission resource, thereby reducing the receiving complexity at the network device.