D2D Data Transmission Priority Mapping via Logical Channel Segmentation
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Solution Overview
Problem
In existing device-to-device (D2D) data transmission methods, data with different priorities are mapped onto the same logical channel, leading to inefficient processing as higher priority data cannot be preferably processed.
Innovation Solution
The method involves a first device receiving data from a second device on multiple logical channels, identifying channel features, and mapping data according to corresponding channel features on a second link to ensure data with different priorities is processed on separate logical channels, improving processing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data with different priorities are mapped onto the same logical channel, then the device complexity is reduced, but the data processing efficiency deteriorates
Solution Approach 1:
The patent segments the single logical channel into multiple logical channels based on data priority levels. Each logical channel is assigned to handle data with specific priority characteristics, enabling differentiated processing. This segmentation resolves the contradiction by maintaining simple device structure through standardized channel interfaces while achieving efficient data processing through priority-based channel assignment.
Solution Approach 2:
The patent applies local quality by assigning different characteristics to different parts of the data transmission system. Specifically, high-priority data (e.g., voice data) is assigned to high-priority logical channels with appropriate quality of service parameters, while low-priority data (e.g., file transfer data) is assigned to low-priority logical channels. This ensures that each data type receives appropriate processing quality without requiring complete system redesign.
2Ease of operation
If data with different priorities are mapped onto the same logical channel, then the ease of operation is improved, but the reliability of priority-based transmission deteriorates
Solution Approach 1:
The patent segments transmission resources into multiple logical channels with distinct priority levels. The network device configures and indicates these logical channels to user equipment, maintaining ease of operation through automated configuration and indication mechanisms. Meanwhile, reliability is ensured by guaranteeing that high-priority data is transmitted on dedicated high-priority channels with appropriate resource allocation and quality of service parameters.
Solution Approach 2:
The patent implements feedback mechanisms where the network device configures logical channels and provides indications to user equipment about which logical channels to use for specific data types. This feedback loop ensures that user equipment correctly maps data to appropriate logical channels, maintaining both ease of operation through automated management and reliability through correct priority-based routing.
Data Source
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AI summary
Embodiments of the present invention provide a device-to-device D2D data transmission method, apparatus, and system. The method includes: receiving first data sent by a second device by using a first logical channel of multiple logical channels on a first link, and identifying a first channel feature of the first logical channel; determining, according to preset configuration information about a correspondence between channel feature information about the first link and channel feature information about a second link, a second channel feature on the second link that corresponds to the first channel feature of the first logical channel on the first link; and mapping, according to the second channel feature, the first data onto a second logical channel that that is of multiple logical channels on the second link and that corresponds to the second channel feature. According to the present invention, when data having different priorities is forwarded, the data may be mapped onto different logical channels for transmission, so that the data having different priorities is processed according to the different priorities, and data processing efficiency is improved.