Directional Wireless Message Transmission for NLOS Vehicle Safety
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G networks, face challenges in efficiently transmitting information between regions that are non-line-of-sight (NLOS), which can lead to communication gaps and safety issues, such as vehicle collisions, due to the inability of vehicles to receive essential signals effectively.
Innovation Solution
A directional wireless message transmission method using a wireless communication device equipped with directional antennas that receives signals from one region and transmits them to another region that is NLOS, facilitating communication between vehicles by relaying safety data and sensor information through directed communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication devices use traditional omnidirectional antennas for signal transmission, then the coverage area is extensive, but the signal strength and reliability in non-line-of-sight regions deteriorates
Solution Approach 1:
The wireless communication device divides its communication coverage into multiple directional sectors using multiple antennas oriented in different directions. Each antenna transmits signals in a specific directional sector, allowing the system to maintain reliable communication with vehicles in non-line-of-sight regions by segmenting the overall coverage area into manageable directional zones.
Solution Approach 2:
The patent applies different transmission characteristics to different spatial regions by using multiple antennas with different orientation directions. Each antenna provides localized signal coverage in its specific directional sector, enabling optimized signal strength and reliability for vehicles in different locations relative to the communication device.
2Adaptability or versatility
If vehicles transmit safety data and sensor information directly, then the communication is simple, but the ability to communicate with vehicles in non-line-of-sight regions is lost
Solution Approach 1:
The wireless communication device acts as an intermediary or relay node between vehicles that can directly communicate and vehicles in non-line-of-sight regions. It receives safety data and sensor information from vehicles with direct line-of-sight and retransmits this information to vehicles in NLOS regions using its multiple directional antennas, thereby extending communication capability without requiring each vehicle to have complex transmission systems.
3Power
If the wireless communication device transmits signals in all directions, then the coverage is maximum, but the signal strength for specific distant regions decreases
Solution Approach 1:
Instead of transmitting a single signal in all directions, the system segments the transmission into multiple directional beams using multiple antennas. Each antenna concentrates transmission power in its specific directional sector, maintaining high signal strength for distant vehicles in that sector while avoiding wasted power in directions where no vehicles are present.
Data Source
AI summary
A directional wireless message transmission method includes: receiving wirelessly, at a wireless communication device from a first region relative to the wireless communication device, one or more signals corresponding to a first vehicle; and transmitting a message, based on the one or more signals corresponding to the first vehicle, from the wireless communication device to a second region relative to the wireless communication device based on the one or more signals being unable to be received in the second region relative to the wireless communication device.