Uplink Power Allocation for Simultaneous Multi-Panel Transmissions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power allocation methods in Multiple Input Multiple Output (MIMO) systems face challenges in managing simultaneous uplink transmissions from multiple UE panels, as the total transmission power often exceeds the maximum UE transmission power threshold, necessitating enhancements in power allocation and reduction.
Innovation Solution
A power control scheme that prioritizes transmission power allocation and reduction by assigning priorities to simultaneous uplink transmissions based on predefined or dynamically indicated orders, ensuring total transmission power does not exceed the threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous uplink transmissions are enabled from multiple UE panels to increase throughput and reliability, then the uplink throughput and reliability are improved, but the total transmission power exceeds the maximum UE transmission power threshold
Solution Approach 1:
The patent segments the simultaneous uplink transmissions into different priority levels (first priority, second priority, third priority). By dividing the transmissions into priority groups, the system can allocate power selectively to ensure total power does not exceed the maximum threshold while maintaining critical transmissions. This segmentation allows the system to manage multiple simultaneous transmissions by treating them as separate controllable units with different importance levels.
Solution Approach 2:
The patent applies local quality by assigning different power allocation characteristics to different transmissions based on their priority. High-priority transmissions receive guaranteed power allocation while lower-priority transmissions receive power only when available. This localized differentiation in power quality ensures that critical transmissions maintain reliability while the overall power constraint is satisfied.
2Reliability
If simultaneous uplink transmissions are enabled from multiple UE panels, then the transmission reliability is improved, but the power allocation complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring priority levels for different transmission types before simultaneous transmissions occur. The network device can indicate priority information in advance through DCI or RRC signaling, and the UE panel is prepared with knowledge of which transmissions have higher priority. This preliminary setup simplifies the real-time power allocation decision-making process while ensuring reliable transmission of critical data.
Solution Approach 2:
The patent uses parameter changes by dynamically adjusting power allocation parameters (power values, priority indicators) based on transmission requirements. The system changes the power parameter selectively for different priority groups, allowing flexible management of simultaneous transmissions. This parameter-based control provides a systematic way to handle complexity while maintaining reliability.
3Ease of operation
If power is allocated to all simultaneous transmissions equally, then fairness is maintained, but the total transmission power exceeds the maximum threshold
Solution Approach 1:
The patent introduces asymmetry in power allocation by treating different transmissions differently based on their priority levels. Instead of equal power distribution, the system allocates power asymmetrically: high-priority transmissions receive sufficient power to meet their requirements, while lower-priority transmissions receive reduced or zero power when the total power budget is constrained. This asymmetric approach ensures the total power remains within the maximum threshold while still providing fair treatment to high-priority transmissions.
Data Source
AI summary
Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for power allocation. The method comprises: in accordance with a determination that a total transmission power of a plurality of uplink transmissions comprising a first set of simultaneous transmissions exceeds a threshold of transmission power, allocating, at a terminal device, power to the plurality of uplink transmissions based on a priority order related to the first set of simultaneous transmissions, wherein the first set of simultaneous transmissions is on a cell and comprises at least a first transmission and a second transmission overlapping at least partly in time domain; and transmitting, to a network device, at least a part of the plurality of uplink transmissions. In this way, the performance of UL transmission operation can be improved.