Trigger Frame User Information Field Allocation for Joint Source Channel Coding
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Solution Overview
Problem
Current joint source and channel coding (JSCC) technologies in wireless communication systems are inefficient in implementing trigger-based transmission, leading to increased overheads and transmission delays, particularly in multi-user scenarios.
Innovation Solution
A communication method and apparatus that generate and send trigger frames with user information fields indicating joint source and channel coding data, allowing for efficient allocation of frequency domain resources and reducing the number of user information fields, enabling trigger-based JSCC transmission and improving transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If trigger-based scheduling uplink transmission method is used for JSCC transmission, then uplink data transmission can be performed after obtaining transmission permission through channel contention, but the transmission efficiency is low and overheads are increased
Solution Approach 1:
The patent segments the user information field into multiple parts distributed across different trigger frames. Specifically, for a JSCC user, the first user information field is carried in a first trigger frame and the second user information field is carried in a second trigger frame, allowing the transmission to be divided into manageable chunks that can be sent independently and reassembled at the receiver.
Solution Approach 2:
The patent introduces a time dimension by distributing user information fields across multiple trigger frames sent at different times. This transforms a single-block transmission problem into a multi-frame sequential transmission, enabling better resource utilization and reduced overhead while maintaining complete user information delivery.
2Loss of information
If multiple user information fields are used for JSCC users, then complete user information can be provided, but the number of fields increases overheads and complexity
Solution Approach 1:
The user information for JSCC users is segmented into multiple fields (first user information field, second user information field) that are distributed across different trigger frames. This segmentation reduces the information burden on any single trigger frame while ensuring complete user information is delivered through the combination of multiple frames.
Solution Approach 2:
The patent uses a mapping relationship as an intermediary mechanism. The first user information field includes a first mapping relationship that associates it with a second user information field carried in a different trigger frame. This intermediary mapping enables the receiver to reconstruct complete user information by correlating fields from multiple trigger frames without requiring all fields to be present in a single frame.
3Reliability
If JSCC transmission is implemented based on trigger frame, then wireless video or picture transmission quality can be improved, but the implementation is still in a blank phase with no standardized method
Solution Approach 1:
The patent makes the trigger frame mechanism universal by enabling it to handle both traditional users and JSCC users through a unified framework. The trigger frame structure is extended to accommodate JSCC-specific user information fields and mapping relationships, allowing the same trigger-based scheduling mechanism to serve multiple user types with different requirements.
Solution Approach 2:
The patent modifies the trigger frame parameters by adding new information fields (first user information field, second user information field, mapping relationships) to the existing trigger frame structure. These parameter changes enable the trigger frame to carry JSCC-specific information while maintaining compatibility with the existing trigger-based scheduling framework.
Data Source
AI summary
This application provides a communication method and a related apparatus. The method includes: generating a trigger frame, where the trigger frame includes a user information field corresponding to one or more users; the one or more users include a first user using joint source and channel coding; and the first user corresponds to a plurality of user information fields, and a user information field corresponding to the first user indicates a layer frequency domain resource of the first user at a source layer, or the first user corresponds to one user information field, and the one user information field corresponding to the first user indicates a total frequency domain resource of the first user at all source layers; and sending the trigger frame, to receive a trigger-based physical layer protocol data unit of the first user.