Downlink Power Control Parameters for Shared RF Backhaul Links
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Solution Overview
Problem
Existing wireless communication systems face challenges in power control, particularly in integrated access and backhaul systems where uplink and downlink transmissions share RF and antenna hardware, leading to power control imbalances and inefficiencies.
Innovation Solution
Implementing power control methods that involve receiving configuration information, performing measurements on reference signals, calculating expected and target receive power values, and transmitting downlink power control parameters to adjust transmission power effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If uplink and downlink transmissions share RF and antenna hardware, then device complexity is reduced, but power control imbalance occurs between uplink and downlink
Solution Approach 1:
The patent introduces downlink power control parameters (target receive power, path loss compensation factor, closed-loop adjustment) to dynamically adjust transmission power based on channel conditions, resolving the power control imbalance caused by shared hardware between uplink and downlink
2Measurement precision
If power control parameters are adjusted dynamically, then power control precision is improved, but calculation complexity increases
Solution Approach 1:
The patent pre-configures power control parameters including target receive power values and path loss compensation factors before actual transmission, allowing the system to achieve precise power control through simple parameter application rather than complex real-time calculations
3Reliability
If transmission power is increased, then signal reception quality is improved, but energy consumption increases
Solution Approach 1:
The patent implements closed-loop power control where the receiving device measures actual receive power, compares it with target power, and sends feedback to the transmitting device to adjust power levels, ensuring optimal signal quality while minimizing energy consumption through adaptive adjustment
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for power control using at least one power control parameter. One method (1600) includes receiving (1602), at a first device, configuration information comprising a power offset value associated with a first plurality of resources and a first reference signal. The method (1600) includes receiving (1604) the first reference signal from a second device. The method (1600) includes performing (1606) a first measurement on the first reference signal. The method (1600) includes calculating (1608) a first expected receive power value based on the first measurement and the power offset value. The method (1600) includes calculating (1610) a first target receive power value. The method (1600) includes transmitting (1612) at least one downlink power control parameter to the second device based on the first target receive power value and the first expected receive power value.