Spatial EIRP Masks for Wireless Interference Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing interference effectively due to variations in effective isotropic radiated power (EIRP) across different spatial angles, which can lead to inefficient resource utilization and interference issues.
Innovation Solution
Network nodes and user equipment determine an EIRP limit based on an EIRP mask and spatial angle associated with the communication, and transmit communications in accordance with this limit to manage interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If EIRP is increased to improve communication coverage and signal strength, then communication reliability is improved, but interference to other users and systems increases
Solution Approach 1:
The patent applies local quality by implementing spatially selective EIRP management through EIRP masks that define different power limits for different spatial directions. The system identifies specific spatial angles where interference occurs and applies targeted EIRP reductions only in those directions, while maintaining higher EIRP in directions where no interference is present. This resolves the contradiction by locally adjusting EIRP quality in interference-prone areas rather than uniformly reducing power across all directions.
Solution Approach 2:
The patent segments the spatial domain into multiple angular sectors and applies different EIRP limits to each sector through EIRP masks. By dividing the 360-degree spatial environment into discrete angular segments and independently managing EIRP for each segment, the system can maintain high power in some directions while reducing power in others, thus improving reliability where needed and reducing interference where harmful.
2Object-generated harmful factors
If EIRP is uniformly reduced to decrease interference, then interference is reduced, but communication coverage and signal strength deteriorate
Solution Approach 1:
Instead of uniformly reducing EIRP across all directions, the patent applies local quality by implementing direction-specific EIRP masks that reduce power only in spatial angles where interference is detected or predicted. The system maintains full EIRP in directions where no interference occurs, thereby preserving communication coverage and signal strength in those areas while still reducing interference in problematic directions.
3Adaptability or versatility
If EIRP masks are implemented to manage interference spatially, then interference management capability is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring EIRP masks with spatial power limits before actual communication occurs. The network node has ready-made EIRP mask configurations that define acceptable EIRP levels for different spatial angles, allowing it to quickly determine whether a communication should be permitted without performing complex real-time calculations. This reduces system complexity by preparing interference management parameters in advance.
Solution Approach 2:
The system implements self-service by automatically comparing intended EIRP against pre-configured EIRP masks and autonomously adjusting transmit power when interference would occur. The network node independently determines spatial angles, checks against EIRP mask limits, and modifies communications without requiring manual intervention or complex external coordination, thereby managing interference capability while keeping system complexity manageable.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may determine an effective isotropic radiated power (EIRP) limit for a communication to be transmitted by the network node, based at least in part on an EIRP mask and a spatial angle associated with the communication. The network node may transmit the communication in accordance with the EIRP limit. Numerous other aspects are described.