Integrated Access Fronthaul Power Control for Relay Signal Quality
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G networks, face challenges in efficiently managing transmit power and amplification gain for relay/repeater units, leading to suboptimal signal quality and increased latency.
Innovation Solution
Implementing methods for determining and controlling transmit power and amplification gain in base stations, relay/repeater units, and user equipment to optimize signal transmission and reception, including methods for determining and applying indicated transmit power and amplification gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If relay/repeater units use fixed amplification gain for signal transmission, then device complexity is reduced, but signal quality deteriorates due to inability to adapt to varying channel conditions
Solution Approach 1:
The patent implements dynamic power control where relay/repeater units adjust their amplification gain based on received power measurements and control messages from upstream nodes. The downstream node determines transmit power or amplification gain based on channel conditions and communicates this to the relay unit, enabling adaptive signal transmission that maintains optimal signal quality across varying network conditions.
2Productivity
If transmit power is increased to improve signal quality, then spectral efficiency improves, but energy consumption increases
Solution Approach 1:
The patent dynamically adjusts transmit power and amplification gain parameters based on channel conditions, distance, and network requirements. The downstream node calculates optimal power levels and communicates them to relay units, ensuring transmit power is increased only when necessary to maintain signal quality, thereby optimizing spectral efficiency while minimizing energy consumption.
3Area of stationary object
If multiple relay/repeater units are deployed to extend coverage, then coverage area increases, but latency increases due to additional signal relaying hops
Solution Approach 1:
The patent implements preliminary power control where the downstream node determines and communicates optimal transmit power and amplification gain settings to relay units before signal transmission. This pre-configured power control optimizes signal strength at each hop, reducing the need for excessive relaying and minimizing cumulative latency while maintaining extended coverage.
4Reliability
If amplification gain is increased to compensate for path loss, then signal quality is maintained, but device complexity increases due to need for precise power control
Solution Approach 1:
The patent implements a feedback-based power control mechanism where relay units measure received signal power and communicate this information to the downstream node. The downstream node uses this feedback to calculate appropriate amplification gain adjustments and communicates control messages back to relay units, creating a closed-loop system that maintains signal quality through adaptive but manageable complexity.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a base station may determine a transmit power to be used by a downstream node or an amplification gain to be used by the downstream node when relaying or repeating messages to a target node. The base station may transmit, to the downstream node, a message intended for the target node, the message having an indicated transmit power, wherein the message intended for the target node is transmitted by the base station using an actual transmit power. In some aspects, the indicated transmit power is the transmit power to be used by the downstream node, so that when the message intended for the target node is repeated by the downstream node, the indicated transmit power of the repeated message matches the actual transmit power of the repeated message.