Uplink Multiplexing Power Control Under Mixed Priority Traffic
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Solution Overview
Problem
Existing wireless communication systems lack effective techniques for determining priority levels between multiplexed uplink transmissions with mixed priorities, leading to dropped transmissions, retransmissions, and poor user experience.
Innovation Solution
A user equipment (UE) determines priority levels for multiplexed uplink transmissions based on the content priority of individual transmissions, adjusting transmit powers accordingly to avoid exceeding a power ceiling and ensure high-priority content is prioritized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple uplink transmissions with different priorities are multiplexed on the same carrier, then the transmission capacity is improved, but the difficulty of determining priority levels and allocating power increases
Solution Approach 1:
The patent segments the uplink transmissions into different priority levels (first priority and second priority) based on the priority of their content. This segmentation allows the system to handle multiple transmissions with different priorities separately, assigning different power control parameters to each priority level, thereby resolving the complexity of priority determination while maintaining high transmission capacity
Solution Approach 2:
The patent performs preliminary classification of uplink transmissions into priority levels before power allocation. By determining the priority level of each transmission in advance based on content priority, the system establishes a clear priority hierarchy that guides subsequent power control decisions, simplifying the overall process
2Reliability
If transmit power is increased to ensure high-priority transmission reliability, then the reliability of high-priority transmissions is improved, but the risk of exceeding power ceiling increases
Solution Approach 1:
The patent changes the power control parameters dynamically based on the priority levels of multiplexed transmissions. When high-priority transmissions are detected, the system adjusts the power control parameters to allocate more power to these transmissions while scaling back power to lower-priority transmissions, ensuring the total power does not exceed the ceiling while maintaining high-priority reliability
Solution Approach 2:
The patent applies different power control strategies to different priority levels of transmissions. High-priority transmissions receive enhanced power control parameters to ensure reliability, while low-priority transmissions use standard or reduced parameters, creating a differentiated power allocation that maintains overall power within limits
3Productivity
If power control prioritization is implemented for multiplexed transmissions, then the effectiveness of multiplexed transmissions is improved, but the complexity of power control management increases
Solution Approach 1:
The patent implements dynamic power control prioritization where the power allocation is continuously adjusted based on the priority levels of active transmissions. The system monitors the multiplexed transmissions and dynamically reconfigures power control parameters according to the current priority composition, improving multiplexed transmission effectiveness while keeping the management complexity manageable through automated adaptation
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. The method includes assigning a first priority level to a multiplexed transmission on a first component carrier based on a priority of content (e.g., highest priority content) of a first uplink transmission and a second uplink transmission included in the multiplexed transmission, assigning a second priority level to a third uplink transmission on a second component carrier based on a content of the third uplink transmission, where the third uplink transmission overlaps in time with the multiplexed transmission, and performing the multiplexed transmission on the first component carrier at a first transmit power and the third uplink transmission on the second component carrier at a second transmit power, where the first transmit power and the second transmit power are respectively based on the first priority level and the second priority level.