Roadside Wireless Communication Device Beamforming Route Assessment
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Solution Overview
Problem
Existing wireless communication systems for mobile apparatuses struggle to perform large capacity data communication due to the need for narrow communication regions to avoid interference between routes, making it difficult to distinguish the route of a vehicle and manage communication effectively.
Innovation Solution
A wireless communication device for the roadside zone that forms beams in multiple directions using a time division scheme, allowing for assessment of the route of a mobile apparatus by recording the time transition of the beams used for communication, enabling efficient data communication across multiple routes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the road antenna forms a narrow communication region to avoid interference with neighboring routes, then interference between routes is avoided, but the communication time with vehicles is shortened making large capacity data communication difficult
Solution Approach 1:
The patent segments the communication region into multiple directional beams corresponding to different routes. The road antenna forms separate communication regions for each route using beamforming technology, allowing simultaneous communication with vehicles on different routes without interference. This segmentation enables the system to maintain narrow dedicated communication regions for each route while collectively covering multiple routes, thus resolving the contradiction between avoiding interference and enabling large capacity data communication.
Solution Approach 2:
The patent introduces spatial dimensionality through directional beamforming. Instead of using a single omnidirectional communication region, the system creates multiple directional beams in different spatial directions, each corresponding to a specific route. This dimensional approach allows the road antenna to serve multiple routes simultaneously with dedicated narrow beams, avoiding interference while maintaining sufficient communication time for large capacity data transfer.
2Productivity
If the road antenna forms a wide communication region to perform large capacity data communication, then data communication capacity is improved, but it becomes difficult to distinguish the route on which vehicles travel
Solution Approach 1:
The patent segments the wide communication region into multiple directional beams, each associated with a specific route. By dividing the communication space into route-specific sectors, the system can identify which route a vehicle is on based on which directional beam the vehicle communicates with. This segmentation maintains route identification accuracy while enabling large capacity data communication within each dedicated beam.
Solution Approach 2:
The patent applies local quality by assigning different directional characteristics to different parts of the communication region. Each directional beam has specific angular coverage corresponding to a particular route, allowing the system to determine vehicle location and route based on the active beam. This local differentiation enables accurate route identification while maintaining overall wide coverage for high-capacity communication.
3Object-affected harmful factors
If a road antenna is provided to each route to avoid interference, then interference is avoided, but the device complexity and cost increase
Solution Approach 1:
The patent merges the functions of multiple route-specific antennas into a single road antenna equipped with beamforming capability. Instead of installing separate antennas for each route, the system uses one antenna that can dynamically form directional beams toward different routes. This merging reduces device complexity and cost while maintaining the interference avoidance benefits of route-specific communication regions.
Solution Approach 2:
The patent makes a single road antenna universal by enabling it to serve multiple routes through beamforming. The antenna can dynamically switch between different directional beams, allowing one antenna to perform the function of multiple route-dedicated antennas. This multi-functionality reduces the number of required roadside units while maintaining route-specific communication capabilities.
Data Source
AI summary
A wireless communication device for a road side zone includes a wireless communication circuit that forms beams in plural different directions in a time division scheme in an area which includes plural routes. The wireless communication device for a road side zone includes a recording circuit that records time transition in the direction of the beam used by the wireless communication circuit, which forms the beams in the plural different directions in a time division scheme, for wireless communication with a second wireless communication device provided to a mobile apparatus which moves on any of the plural routes.