IAB Node Power Control for Overlapping MT DU Transmissions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing power distribution between mobile termination (MT) and distributed unit (DU) components within an Integrated Access and Backhaul (IAB) node, particularly when both need to transmit simultaneously, leading to potential power insufficiency and reduced transmission capabilities.
Innovation Solution
A power control method is proposed to allocate and manage the maximum transmission power (PIAB) between MTs and DUs in an IAB node, prioritizing power distribution based on overlapping transmission times and resource availability, allowing for flexible and efficient power sharing during simultaneous transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If maximum transmission power is allocated to both MT and DU simultaneously, then transmission capability is improved, but power insufficiency occurs when transmissions overlap
Solution Approach 1:
The patent implements dynamic power allocation where the maximum transmit power (PIAB) is distributed between MT and DU based on real-time transmission overlap conditions. When transmissions overlap, the system dynamically adjusts the power distribution ratio, allowing both components to transmit simultaneously at optimized power levels rather than using fixed static allocation. This resolves the contradiction by making the power allocation adaptive to actual transmission needs, preventing power insufficiency while maintaining transmission capability.
Solution Approach 2:
The system changes the power allocation parameters dynamically based on transmission overlap detection. By monitoring whether MT and DU transmissions occur simultaneously and adjusting the power distribution parameters accordingly, the system optimizes the use of available power resources. This parameter adjustment resolves the contradiction between maintaining high transmission capability and avoiding power insufficiency during overlapping transmissions.
2Reliability
If power is prioritized to one component (MT or DU), then transmission reliability of that component is improved, but the other component experiences reduced power availability
Solution Approach 1:
The patent employs dynamic power prioritization that switches between MT and DU based on real-time transmission conditions. Rather than statically prioritizing one component, the system dynamically determines which component should receive priority power allocation at any given moment based on whether transmissions are overlapping. This dynamic approach ensures both components can achieve reliable transmission when needed while sharing the total power budget fairly, resolving the contradiction between transmission reliability and power availability for both components.
3Productivity
If simultaneous transmission of MT and DU is enabled, then communication efficiency is improved, but power management complexity increases
Solution Approach 1:
The patent implements preliminary detection of transmission overlap between MT and DU before power allocation decisions are made. By proactively identifying when simultaneous transmissions will occur, the system can pre-calculate the appropriate power distribution in advance, avoiding complex real-time power management during actual transmission. This preliminary action simplifies the overall power management complexity while enabling efficient simultaneous transmissions.
Data Source
AI summary
The purpose of the present invention is to provide a method for controlling power of an IAB node, and a device using the method. A power control method performed by an IAB node for the purpose comprises: receiving power information, wherein the power information informs the IAB node of a configured power control method; and on the basis that the sum of an MT power for MT transmission and a DU power for DU transmission is greater than the maximum transmission power allocated to the LAB node, performing power control on at least one of the MT power and the DU power on the basis of the power information, wherein an MT resource on which the MT transmission is performed and a DU resource on which the DU transmission is performed overlap in a time domain.