Carrier Selection for D2D Terminals Using Priority Mapping
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Solution Overview
Problem
In Device-to-Device (D2D) communication, determining the appropriate carriers for data packets with different packet priorities in a terminal device is a challenging task, as existing methods lack efficiency in signaling overhead reduction and data transmission efficiency.
Innovation Solution
A terminal device determines carriers for transmitting data packets with specific priorities based on configuration information that indicates a correspondence between packet priorities and carriers, allowing for reduced signaling overhead and improved data transmission efficiency by selecting carriers that match the priority levels and Channel Busy Ratio (CBR) thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal device determines carriers for different packet priorities using existing methods, then data transmission can be performed, but signaling overhead is high and data transmission efficiency is low
Solution Approach 1:
The patent segments the carrier selection process by establishing separate correspondence relationships between packet priorities and carriers for different service types (first service and second service). This segmentation allows the terminal device to select carriers based on specific priority-to-carrier mappings rather than using a unified complex determination method, thereby reducing signaling overhead while maintaining transmission efficiency
Solution Approach 2:
The patent applies preliminary action by pre-establishing correspondence relationships between packet priorities and carriers through configuration information before actual data transmission occurs. The terminal device receives configuration information that includes these pre-defined mappings, allowing it to directly determine carriers for different packet priorities without performing complex real-time calculations, thus reducing signaling overhead and improving transmission efficiency
Data Source
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AI summary
Embodiments of the application provide a method and a device for selecting a carrier, and a terminal device, wherein the terminal device may determine a correspondence between data packet priorities and carriers, thereby improving efficiency of data transmission. The method includes: determining, by a terminal device, a carrier for transmitting data packets with at least one first data packet priority according to configuration information, wherein the configuration information indicates a first correspondence between the at least one first data packet priority and at least one first carrier.