Weighted EIRP Masking for Beam Direction Interference Mitigation
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Solution Overview
Problem
Wireless communications systems face challenges in generating an effective isotropic radiated power (EIRP) mask to mitigate interference between terrestrial and non-terrestrial devices, particularly when terrestrial devices struggle to maintain communication performance while adhering to an average EIRP mask, leading to potential safety concerns.
Innovation Solution
Terrestrial wireless devices generate a set of weighted values based on directional parameters like azimuth and elevation angles to create an average EIRP mask, averaging transmitted power over a range of values to reduce interference while maintaining communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terrestrial devices transmit with high power to maintain communication performance, then communication quality is improved, but interference to non-terrestrial devices increases
Solution Approach 1:
The patent applies local quality by implementing direction-dependent power control where the terrestrial device transmits at different power levels in different spatial directions. The EIRP mask is applied selectively based on the angular relationship between the terrestrial device's transmit beam and the non-terrestrial device's location, allowing high power transmission toward the intended receiver while limiting power in directions that would cause interference to non-terrestrial devices.
Solution Approach 2:
The patent implements dynamics through adaptive power adjustment where the terrestrial device dynamically modifies its transmission power based on real-time conditions including the direction of transmit beams, identified angular ranges for non-terrestrial devices, and communication requirements. The power control is not static but adapts to changing beam directions and interference conditions.
2Object-generated harmful factors
If terrestrial devices apply an average EIRP mask to reduce interference, then interference mitigation is improved, but communication performance may deteriorate
Solution Approach 1:
The patent applies preliminary action by pre-identifying and storing angular ranges corresponding to directions where non-terrestrial devices are located before terrestrial device transmission occurs. This advance preparation allows the terrestrial device to quickly determine appropriate power levels without real-time calculation delays, ensuring both interference mitigation and timely communication performance.
Solution Approach 2:
The patent implements parameter changes by modifying the EIRP mask parameters based on the specific angular relationship between the terrestrial device's beam direction and the identified ranges for non-terrestrial devices. Rather than applying a fixed average EIRP mask, the system adjusts the mask parameters dynamically to balance interference reduction with maintaining adequate communication performance.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Generally, the techniques described herein may support generating an average effective isotropic radiated power (EIRP) mask in accordance with a set of weighted values to support interference management. For example, a wireless device may obtain one or more information bits for transmission by the wireless device via a transmit beam of multiple transmit beams of the wireless device and may generate, based on one or more directional parameters associated with a beamforming direction of the transmit beam, a set of weighted values for an average EIRP mask for the transmission of the one or more information bits. Additionally, the wireless device may transmit, via the transmit beam in the beamforming direction based on the one or more directional parameters and the set of weighted values, a signal comprising the one or more information bits to meet the average EIRP mask.