Sidelink Transmission Priority Mapping Across Logical and Physical Layers
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Solution Overview
Problem
Existing wireless communication technologies, particularly in NR sidelink, face challenges in determining optimal transmission priorities due to inconsistencies between logical channel priorities and physical layer priorities, leading to sub-optimal communication performance.
Innovation Solution
A method and device for determining transmission priority in device-to-device communication, involving branches to assess control messages, logical channel priorities, retransmissions, and predefined values, with flexible mappings between different layers and network configurations to ensure accurate priority determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple branches are used to determine transmission priority (control messages, logical channel priorities, retransmissions, predefined values), then transmission priority determination becomes more comprehensive and accurate, but device complexity increases
Solution Approach 1:
The priority determination mechanism is divided into multiple independent branches: control message priority determination, logical channel priority determination, retransmission priority determination, and predefined value determination. Each branch handles specific scenarios independently, allowing comprehensive coverage without excessive cross-branch complexity. The segmentation enables modular processing where each branch can be evaluated separately based on the transmission scenario.
Solution Approach 2:
The patent implements dynamic priority determination by selecting which branch to execute based on the current transmission scenario. The system dynamically adapts the priority determination process to the specific situation (e.g., whether it's a retransmission, what type of control message, which logical channel is used). This dynamic approach maintains accuracy while avoiding unnecessary complexity in each individual branch.
2Productivity
If flexible mappings between different layers are implemented, then communication efficiency and service matching improve, but device complexity increases
Solution Approach 1:
The patent changes the parameter representation of priority across different layers (physical layer, MAC layer, network layer). Each layer uses priority parameters appropriate to its function, and the mapping mechanism transforms these parameters while preserving the essential priority information. This allows efficient communication at each layer while maintaining overall system coordination through the parameter transformations.
Solution Approach 2:
The mapping mechanism acts as an intermediary between different protocol layers, translating priority concepts from one layer to another. Rather than requiring direct complex interactions between layers, the intermediary mapping functions provide a standardized interface that simplifies the overall system architecture while enabling flexible priority handling across layers.
Data Source
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AI summary
The present disclosure provides a method for a device to determine transmission priority for a transmission to another device in a device-to-device communication. The present disclosure also provides a corresponding device, computer programs, and computer-readable storage.