Asymmetric Directivity Millimeter Wave Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in managing increasing data traffic with millimeter wave band signals, particularly in balancing directivity and beamwidth to avoid interference and optimize coverage and capacity.
Innovation Solution
The implementation of a wireless communication system using asymmetric directivity signals, where base stations transmit millimeter wave band low directivity signals with wide beamwidth in the downlink direction and communication devices transmit high directivity signals with narrow beamwidth in the uplink direction, utilizing different frequency channels to avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If base stations transmit millimeter wave band signals with wide beamwidth, then coverage area is improved, but interference between different transmissions increases
Solution Approach 1:
The patent applies asymmetric directivity by configuring base stations to transmit downlink signals with wide beamwidth for coverage while communication devices transmit uplink signals with narrow beamwidth for interference reduction. This asymmetry resolves the contradiction by allowing the base station to prioritize coverage area while communication devices prioritize interference minimization, achieving both goals simultaneously through differentiated transmission characteristics.
2Object-generated harmful factors
If communication devices transmit high directivity signals with narrow beamwidth, then interference between devices is reduced, but coverage area decreases
Solution Approach 1:
The patent resolves this contradiction by creating an asymmetric system where communication devices use narrow beamwidth for uplink transmissions to minimize interference, while base stations use wide beamwidth for downlink transmissions to ensure coverage. The asymmetry allows each component to optimize its transmission characteristics according to its functional role, with the base station compensating for the limited device coverage through its wider transmission pattern.
3Productivity
If millimeter wave band signals are used, then data transmission capacity is improved, but signal attenuation and interference increase
Solution Approach 1:
The patent addresses millimeter wave challenges by implementing asymmetric directivity where base stations transmit with wide beamwidth to maximize signal distribution and coverage, while communication devices transmit with narrow beamwidth to concentrate energy and reduce interference. This asymmetric approach optimizes the millimeter wave band utilization by balancing the high capacity benefits against the inherent attenuation and interference issues through differentiated transmission strategies.
Data Source
AI summary
A wireless communication system uses millimeter wave band asymmetric directivity signals. The system includes a base station configured to transmit in a downlink direction millimeter wave band low directivity signals having a wide beamwidth. The system includes a plurality of communication devices configured to transmit in an uplink direction millimeter wave band high directivity signals having narrow beamwidth. The millimeter wave band high directivity signals are transmitted by the communication devices in different frequency channels. The base station is configured for a wide receive beam and the communication devices are configured for a narrow receive beam.