Power Determination in Integrated Access Backhaul Nodes
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Solution Overview
Problem
The challenge of accurately determining power information for communication channels and signals in integrated access and backhaul (IAB) systems, particularly when signals are transmitted simultaneously on uplink and downlink links using frequency or spatial division multiplexing, and the issue of interference between signals transmitted by different nodes.
Innovation Solution
A method for power determination and signal transmission that involves a communication node determining power information based on received signaling or agreed rules, considering factors such as power sharing and interference between channels or signals, and adjusting power levels to ensure compliance with preset thresholds and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power sharing is implemented between uplink backhaul and downlink access signals, then power utilization efficiency is improved, but power determination accuracy deteriorates due to the complex power sharing problem
Solution Approach 1:
The patent segments power information into three distinct types: first-type power information for uplink backhaul signals, second-type power information for downlink access signals, and third-type power information for other channels. This segmentation allows each type to be determined using appropriate acquisition parameters, resolving the contradiction by enabling accurate power determination while maintaining efficient power sharing through the unified power management framework.
2Productivity
If signals are transmitted simultaneously on uplink backhaul and downlink access links using FDM/SDM, then communication productivity is improved, but interference between signals increases due to unequal transmission power
Solution Approach 1:
The patent implements feedback mechanisms where communication nodes report power information and channel conditions to the network device. The network device uses this feedback to adjust power allocation dynamically, ensuring that simultaneous transmissions on uplink backhaul and downlink access links maintain appropriate power levels, thereby reducing interference while preserving high communication productivity.
3Adaptability or versatility
If scheduling is controlled by multiple IAB nodes for backhaul and access links, then system adaptability is improved, but power control complexity increases leading to inaccurate power determination
Solution Approach 1:
The patent introduces a unified power management framework that acts as an intermediary between multiple IAB nodes performing scheduling. This framework standardizes power information acquisition and determination processes, allowing each node to operate independently with scheduling flexibility while the unified framework ensures consistent and accurate power determination across the entire system.
Data Source
AI summary
Disclosed is a power determination method, including: a first communication node determines power information according to at least one of signaling information and an agreed rule, where the power information includes at least one of: first-type power information associated with a first-type channel or signal, second-type power information associated with a second-type channel or signal, or third-type power information associated with the first-type channel or signal; where an acquisition parameter of the first-type power information comprises the second-type power information, and an acquisition parameter of the third-type power information do not comprise the second-type power information; and where the first-type channel or signal is a channel or a signal between the first communication node and a second communication node, and the second-type channel or signal is a channel or a signal between the first communication node and one or more third communication nodes.