EIRP Limit Management for Multi-Beam Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing interference and radio leakage due to multi-beam transmissions, which are not adequately addressed by current EIRP limits designed for single-beam configurations, leading to reduced coverage and throughput.
Innovation Solution
Implementing a dual EIRP limit system where a first EIRP limit is applied during single-beam transmissions and a second, lower limit is used during multi-beam communications, along with EIRP measurements that account for multiple peaks in beamforming vectors, to manage interference and optimize transmit power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single EIRP limit is used for all beamforming configurations, then the limit is simple to implement, but it causes reduced coverage and throughput for multi-beam transmissions
Solution Approach 1:
The patent segments the EIRP limit into multiple distinct limits: a first EIRP limit for single-beam transmissions and a second EIRP limit for multi-beam transmissions. This segmentation allows each limit to be optimized for its specific beamforming scenario, thereby improving throughput without excessively complicating the overall limit management structure.
Solution Approach 2:
The patent implements dynamic EIRP limit selection that adapts based on the current beamforming configuration. The system dynamically determines whether to apply the first or second EIRP limit by detecting the number of peaks in the beamforming vector, enabling the EIRP limit to change adaptively with transmission conditions and maximizing productivity.
2Area of stationary object
If a higher EIRP limit is applied during multi-beam transmissions, then coverage and throughput increase, but interference and radio leakage worsen
Solution Approach 1:
The patent applies different EIRP limits tailored to specific beamforming scenarios: a first EIRP limit for single-beam transmissions and a second EIRP limit for multi-beam transmissions. This local quality approach ensures that each transmission type operates under the most appropriate power constraint, optimizing coverage area while controlling interference and radio leakage for each specific case.
Solution Approach 2:
The patent changes the EIRP parameter based on the beamforming configuration by detecting the number of peaks in the beamforming vector. When multi-beam transmission is detected (multiple peaks), the system applies the second EIRP limit; otherwise, it applies the first EIRP limit. This parameter change strategy allows the system to adapt power levels to transmission conditions, balancing coverage area expansion with interference control.
3Productivity
If beamforming vectors with multiple peaks are used, then communication efficiency improves, but the existing EIRP limit becomes inadequate
Solution Approach 1:
The patent implements a dynamic EIRP limit system that automatically adapts to different beamforming configurations. By detecting the number of peaks in the beamforming vector, the system dynamically selects the appropriate EIRP limit (first limit for single-peak, second limit for multi-peak), ensuring the EIRP limit remains adequate and reliable for the current communication efficiency level.
Solution Approach 2:
The patent employs feedback mechanisms where the system monitors the beamforming vector characteristics (number of peaks) and uses this information to determine the appropriate EIRP limit. This feedback loop ensures that the EIRP limit remains adequate and appropriate for the actual transmission conditions, maintaining reliability while supporting improved communication efficiency through multi-beam vectors.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network entity may transmit during a first time interval in accordance with a first effective isotropic radiated power (EIRP) limit, wherein the first EIRP limit is associated with a first beamforming vector corresponding to a single peak in a beamspace, and transmitting during a second time interval in accordance with a second EIRP limit lower than the first EIRP limit, wherein the second EIRP limit is for a multiple beam communication condition. Numerous other aspects are described.