Rate-Split Feedback Scheduling for Common and Private Messages
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing priority and feedback for rate-split schemes, particularly in decoding private and common portions of messages, which affects the reliability and efficiency of transmissions.
Innovation Solution
Implementing a method where messages are split into common and private portions, with the common portion combined in a single codeword for multiple UEs and private portions maintained separately, and assigning different feedback resources for each, ensuring prioritization and timing of feedback transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback resources are assigned for both common and private portions separately, then decoding reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The feedback resource is segmented into two distinct parts: a first feedback resource for the common portion and a second feedback resource for the private portion. This segmentation allows independent allocation and management of feedback resources for each message type, improving decoding reliability while maintaining manageable complexity through structured resource division.
Solution Approach 2:
The patent introduces a time dimension by configuring the first feedback resource to occur before the second feedback resource. This temporal dimensionality allows the system to handle common and private feedback sequentially, reducing resource conflicts and simplifying the allocation mechanism while maintaining high reliability.
2Productivity
If the first feedback resource is configured before the second feedback resource, then feedback prioritization is improved, but timing coordination complexity increases
Solution Approach 1:
The first feedback resource for the common portion is configured to occur before the second feedback resource for the private portion. This preliminary action ensures that common feedback, which may be more critical for system operation, is transmitted and processed first, improving feedback prioritization efficiency while the structured timing reduces coordination complexity.
3Productivity
If messages are split into common and private portions with separate codewords, then transmission efficiency is improved, but processing complexity increases
Solution Approach 1:
The message is segmented into a common portion and a private portion, each encoded into separate codewords (first CW and second CW). This segmentation enables parallel processing and transmission of different message types, improving transmission efficiency while the clear structural separation keeps processing complexity manageable through organized handling of distinct code segments.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Techniques described herein provide for priority and feedback resources for rate-split transmissions. In rate-splitting approaches, messages destined for various user equipment (UEs) may be split into a common portion and a private portion. The common portion of messages may be transmitted to multiple UEs, and each of the private portions may be transmitted to individual UEs, so that each UE may receive their entire respective messages. The network may assign different feedback resources for the common portion and the private portion of a rate-split transmission. The feedback resource for the common portion may be prior to the feedback resource for the private portion.