Uplink Beamforming Phase Control for RU Interference Isolation
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Solution Overview
Problem
Existing uplink communication in smart factories experiences signal interference and inefficient spectrum utilization due to UEs connecting with multiple RUs, leading to increased power consumption and reduced band usage efficiency.
Innovation Solution
A method for uplink communication in a radio access network (RAN) that involves establishing a spatially isolated relationship between UEs and RUs by controlling beamforming antennas with phase delays to minimize interference and optimize spectrum utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE transmits at highest power level to ensure RU connection, then connection reliability is improved, but spectrum utilization efficiency deteriorates due to interference with other RUs
Solution Approach 1:
The patent applies local quality by configuring different transmit power levels for different UEs based on their specific conditions. Instead of uniformly setting all UEs to highest power, the base station adjusts each UE's power level according to its distance, channel conditions, and interference environment, thereby maintaining connection reliability while reducing overall spectrum interference
Solution Approach 2:
The patent dynamically changes the transmit power parameter of UEs based on real-time channel conditions and interference levels. The base station monitors uplink signal quality and adjusts power levels adaptively, transitioning from static highest-power transmission to dynamic parameter optimization, resolving the contradiction between reliability and spectrum efficiency
2Stability of the object's composition
If UE connects with multiple RUs to ensure coverage, then connection stability is improved, but interference increases and band usage efficiency deteriorates
Solution Approach 1:
The patent extracts the harmful interference effect by selectively disconnecting UEs from certain RUs. Instead of maintaining connections with all detectable RUs, the system identifies and eliminates redundant connections that cause interference, keeping only the optimal RU connection for each UE, thus maintaining stability while improving band usage efficiency
Solution Approach 2:
The patent implements dynamic connection management where UE-RU associations are not fixed but adaptively changed based on channel conditions. The system dynamically adjusts which RU each UE connects to, allowing connections to be established or released in real-time, balancing connection stability with interference reduction
3Measurement precision
If UE increases transmit power to overcome interference, then signal reception quality is improved, but power consumption increases
Solution Approach 1:
The patent implements a feedback mechanism where the base station monitors uplink signal quality and provides power control commands to UEs. Instead of UEs blindly increasing power, the system uses closed-loop feedback to adjust power levels precisely to the minimum needed for acceptable reception quality, improving signal quality while minimizing unnecessary power consumption
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method enhances uplink throughput and reduces signal interference by ensuring UEs communicate only with a single designated RU, thereby increasing spectrum utilization and optimizing bandwidth efficiency.
Implementation Method 1
controlling the beamforming antenna of the UE via one of the RUs that is connected to the UE
Implementation Method 2
the host device conducts data transmission with the UE in multiple phase delays through controlling the beamforming antenna of the UE
Data Source
AI summary
A method for uplink communication to be executed by a RAN includes: for each of UEs, establishing connection with one of RUs; host device conducting data transmission with each UE in multiple phase delays through controlling the beamforming antenna of the UE via the RU that is connected to the UE, and calculating an error rate with respect to each of the phase delays; the host device finding one of the phase delays that has the lowest error rate and setting a configuration of beamforming antenna of the UE with the phase delay that has the lowest error rate, such that the UE and the RU connected thereto form a spatially isolated relationship; and within the spatially isolated relationship, the RU receiving uplink data from the UE and transmitting the uplink data to the host device.