Sidelink MAC PDU Scheduling by Logical Channel Priority
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Solution Overview
Problem
In 5G mobile communication, existing methods for logical channel prioritization in sidelink (SL) communication fail to guarantee Quality of Service (QoS) by prioritizing lower logical channel priority data over higher priority data, leading to potential safety issues in vehicle-to-everything (V2X) communications.
Innovation Solution
A method and apparatus for determining a second UE based on logical channel priorities of SL-DRBs and/or SL-SRBs, ensuring that data with higher urgency is transmitted first by prioritizing logical channels with higher priorities using a token bucket algorithm and logical channel prioritization (LCP) process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data is cached in the terminal device to improve access speed, then data access speed is improved, but device memory resources are consumed and data security risks increase
Solution Approach 1:
The patent introduces a server as an intermediary between terminal devices and data sources. The server acts as a centralized caching mechanism that stores frequently accessed data, allowing terminal devices to retrieve data through the server without storing it locally. This resolves the contradiction by providing fast data access (through server caching) while eliminating the need for terminal devices to consume their own memory resources for caching purposes.
2Speed
If data is cached in the terminal device to improve access speed, then data access speed is improved, but data security risks increase
Solution Approach 1:
The server serves as a secure intermediary that centralizes data storage and access control. By keeping data on the server rather than distributing it to terminal devices, the system maintains fast access speeds while reducing security risks associated with local data storage, such as data leakage, unauthorized access, and device loss.
Solution Approach 2:
The system implements a feedback mechanism where the server monitors data access patterns and dynamically determines what data to cache and for how long. This allows the server to optimize caching strategies based on actual usage, maintaining fast access speeds while controlling security risks through centralized management and access logging.
3Speed
If data is pre-fetched and cached to improve access speed, then data access speed is improved, but network bandwidth is consumed
Solution Approach 1:
The server employs feedback-based caching strategies that monitor actual data access patterns and adjust caching behavior accordingly. Instead of aggressive pre-fetching that consumes excessive bandwidth, the system caches data based on demonstrated demand, maintaining fast access speeds while optimizing network bandwidth utilization through intelligent, data-driven caching decisions.
Data Source
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AI summary
Embodiments of the present application disclose a data processing method and apparatus, a communication device, and a storage medium. The data processing method is applicable to a first UE, and comprises: determining a second UE according to the logical channel priorities of logical channels corresponding to a sidelink data radio bearer (SL-DRB) and/or a sidelink signaling radio bearer (SL-SRB) of data to be sent; and determining a media access control protocol data unit (MAC PDU) to be sent to the second UE, wherein the MAC PDU comprises data to be sent determined according to the logical channel priorities of logical channels corresponding to SL-RBs of the second UE, wherein said data to be sent consists of data in one or more of the SL-RBs, and the SL-RBs of the second UE comprise a SL-DRB of the second UE and/or a sidelink signaling radio bearer (SL-SRB) of the second UE.