UE Uplink Channel Multiplexing Priority Handling
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Solution Overview
Problem
Current mechanisms for Ultra-Reliable and Low Latency Communication (URLLC) in 5G New Radio (NR) lack a method to effectively handle collisions between different priority uplink (UL) traffic channels, leading to inefficiencies in multiplexing and prioritization, particularly when low priority (LP) and high priority (HP) channels overlap.
Innovation Solution
A method for user equipment (UE) to determine whether to multiplex and prioritize UL channels based on priority indices, allowing for internal multiplexing and prioritization within the UE, including deciding whether to perform UL transmissions in slots where multiple channels overlap, and adjusting transmission based on priority indices to ensure efficient handling of collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple UL channels with different priorities are transmitted simultaneously, then the quantity of transmitted data increases, but collisions occur between channels leading to transmission failures
Solution Approach 1:
The patent segments UL channels by priority levels (first priority index and second priority index) and processes them separately through distinct determination steps. High priority channels are evaluated and transmitted first, then low priority channels are processed only if they do not conflict with high priority transmissions, thereby preventing collisions while maintaining high data throughput
Solution Approach 2:
The patent applies different quality standards to different priority channels by determining whether to multiplex based on priority index. High priority channels receive preferential treatment in the multiplexing decision process, ensuring their transmission reliability is maintained while still allowing low priority channels to utilize remaining resources
2Productivity
If UL channels are multiplexed to increase transmission efficiency, then productivity improves, but collisions between overlapping channels increase
Solution Approach 1:
The patent performs preliminary determination of whether to multiplex UL channels before actual transmission occurs. By evaluating the multiplexing condition based on priority indices in advance, the system can identify potential collisions and adjust the transmission plan accordingly, preventing collisions before they occur while still maximizing transmission efficiency
Solution Approach 2:
The patent implements dynamic multiplexing decisions that adapt to the specific priority indices of overlapping channels. Rather than using a fixed multiplexing rule, the system dynamically evaluates each channel combination and makes real-time decisions about whether to multiplex, allowing transmission efficiency to be optimized without compromising reliability
Data Source
AI summary
According to an exemplary embodiment, the disclosure is directed to a method used by a UE to multiplex uplink transmissions. The method includes determining whether to multiplex a first plurality of UL channels in a first slot, where the UL channels overlap within at least one time period and are indicated with a first priority index; determining whether to multiplex a second plurality of UL channels in the first slot, where the second plurality of channels overlap within at least one time period and are indicated with a second priority index; determining whether to multiplex a third plurality of UL channels in the first slot, where the UL channels are indicated with different priority indexes; determining whether to prioritize a fourth plurality of UL channels in the first slot, wherein the UL channels are indicated with a different priority indexes; and performing an uplink transmission in the first slot.