Uplink Channel Multiplexing for URLLC and eMBB Overlap
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Solution Overview
Problem
In New Radio (NR) communication systems, when multiple uplink channels overlap, especially those carrying Ultra-Reliable and Low Latency Communication (URLLC) and Enhanced Mobile Broadband (eMBB) UCI, existing multiplexing transmission modes increase delay and reduce user experience, leading to data loss and decreased transmission performance.
Innovation Solution
A two-step multiplexing judgment mechanism is implemented, where each type of uplink channel is determined based on its type and priority, allowing for separate transmission channels and reducing the need for further multiplexing, thereby improving transmission performance and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing multiplexing transmission mode is used for multiple overlapped uplink channels, then transmission resource utilization is improved, but URLLC UCI delay increases and user experience deteriorates
Solution Approach 1:
The patent segments the multiplexing transmission process into two distinct steps: first determining separate transmission channels for different uplink channel types (eMBB and URLLC), then evaluating whether further multiplexing is necessary. This segmentation allows URLLC channels to be prioritized and transmitted separately, reducing delay while still enabling resource sharing when appropriate.
Solution Approach 2:
The patent performs preliminary channel type classification and priority assignment before the actual transmission decision. By pre-determining which channels require separate transmission (particularly URLLC channels) and establishing transmission priorities in advance, the system avoids last-minute multiplexing decisions that would increase URLLC latency.
2Productivity
If multiple overlapped uplink channels are multiplexed on one uplink channel, then transmission efficiency is improved, but data loss increases and transmission performance deteriorates
Solution Approach 1:
The patent implements a dynamic multiplexing decision mechanism where the system evaluates transmission conditions in real-time and adjusts multiplexing decisions accordingly. Rather than forcing all channels into a single multiplexed transmission, the system dynamically determines when separate transmission is necessary to preserve data integrity, particularly for high-priority URLLC data.
Solution Approach 2:
The patent incorporates feedback mechanisms that monitor transmission conditions and outcomes. By evaluating whether multiplexing transmission is actually needed based on channel characteristics and data priorities, the system can adjust its multiplexing strategy to prevent data loss while maintaining efficiency when conditions permit.
3Adaptability or versatility
If traditional multiplexing judgment mechanism is used, then transmission flexibility is maintained, but mechanism complexity increases when handling many overlapped channels
Solution Approach 1:
The patent divides the complex multiplexing judgment into two simpler sub-judgments: first judging whether channels of different types need separate transmission channels, and second judging whether further multiplexing is required. This segmentation reduces the complexity of handling multiple overlapped channels by breaking down the decision process into manageable stages.
Solution Approach 2:
The patent performs preliminary classification of uplink channels by type (eMBB, URLLC, etc.) and assigns transmission priorities before the main multiplexing decision. This preliminary organization simplifies subsequent multiplexing judgments by pre-establishing channel categories and priorities, reducing the computational complexity of handling multiple overlapped channels.
Data Source
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AI summary
Provided are a wireless communication method and device. The wireless communication method comprises: if at least two types of uplink channels to be transmitted overlap, determining a target uplink channel on the basis of the overlap of the at least two types of uplink channels to be transmitted, the at least two types of uplink channels to be transmitted being respectively used for transmitting part of or all the information carried by the at least two types of uplink channels; and sending the target uplink channel, the target uplink channel being used for transmitting part of or all the information carried by the at least two types of uplink channels to be transmitted. The at least two uplink channels to be transmitted are multiplexing channels of the at least two types of uplink channels respectively.