Directional Channel Occupancy Monitoring for mmWave Beam Collisions
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Solution Overview
Problem
Wireless communication systems operating in overlapping mmWave bands experience collisions and interference due to directional beamforming, leading to inefficient use of resources and failed data transmissions.
Innovation Solution
Implement directional channel occupancy monitoring by updating a channel occupancy list to indicate occupied and available beam directions and subbands, allowing networks to communicate efficiently by avoiding or reducing transmission power in occupied areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If directional beamforming is used to improve wireless communication efficiency in mmWave bands, then communication efficiency is improved, but collisions and interference between different networks increase
Solution Approach 1:
The system performs preliminary channel occupancy monitoring in multiple beam directions before transmitting data. By detecting signals from other networks in advance and updating the channel occupancy list, the system avoids collisions and interference by selecting appropriate beam directions and subbands for transmission, thus maintaining communication efficiency while preventing harmful interactions.
2Reliability
If channel occupancy monitoring is performed in all beam directions to avoid collisions, then collision avoidance is improved, but system complexity and resource overhead increase
Solution Approach 1:
The system segments the monitoring and transmission processes by maintaining a channel occupancy list that records occupancy status for different beam directions and subbands separately. This segmentation allows the system to perform targeted monitoring in specific beam directions rather than continuously monitoring all directions, reducing overhead while maintaining reliable collision avoidance through selective monitoring based on the occupancy list.
Data Source
AI summary
Mechanisms for directional channel occupancy monitoring for a frequency band among multiple networks are provided. In one aspect, a method of wireless communication includes monitoring, in a shared frequency band in a plurality of beam directions, for signals associated with one or more wireless networks different from the first wireless network. The monitoring includes: detecting, in the shared frequency band and in at least a first beam direction of the plurality of beam directions, a first signal associated with a second wireless network; and up-dating a channel occupancy list to indicate that at least a portion of the shared frequency band is occupied in at least the first beam direction. The method also includes transmitting, in the shared frequency band, a second signal in a second beam direction of the plurality of beam directions based on the channel occupancy list.