Millimeter Wave Beam Alignment via DSRC Location Prediction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current millimeter wave communication systems fail to perform device discovery and beam alignment for vehicles traveling faster than 5.6 miles per hour and located beyond 100 meters, due to limitations of omni directional and directional beacons.
Innovation Solution
A method involving a first communication device broadcasting a service discovery message via DSRC, receiving a handshake message, analyzing DSRC data to estimate the future location of a second communication device, and aligning a millimeter wave beam with the second device's communication unit to provide millimeter wave communication services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If omni directional beacons are used for device discovery, then device discovery is possible, but the system fails to support vehicles traveling faster than 5.6 miles per hour and located beyond 100 meters
Solution Approach 1:
The patent introduces DSRC (Dedicated Short Range Communication) as an intermediary communication channel between vehicles. DSRC transmits service discovery messages, handshake messages, and location/speed/bearing data that enable millimeter wave beam alignment. This intermediary system bridges the gap between moving vehicles and the millimeter wave communication system, allowing reliable device discovery at higher speeds and distances beyond what omni directional beacons can achieve.
2Length of stationary object
If directional beacons are used for beam alignment, then beam alignment is possible, but the system fails to support distances beyond 100 meters
Solution Approach 1:
The patent implements preliminary actions by having vehicles exchange DSRC messages containing location, speed, and bearing data before millimeter wave beam alignment is attempted. The system calculates future locations based on current motion parameters and pre-aligns beams toward predicted positions. This preliminary data exchange and prediction process enables accurate beam alignment at distances beyond 100 meters, where direct directional beacon alignment would fail.
3Productivity
If millimeter wave communication is implemented, then large data transmission capacity is achieved, but device discovery and beam alignment fail at relative speeds between 5.6 and 100.1 miles per hour
Solution Approach 1:
The patent implements continuous feedback loops where vehicles transmit DSRC messages containing real-time location, speed, and bearing information. The receiving vehicle processes this feedback data to calculate future positions and dynamically adjusts beam directions accordingly. This feedback mechanism enables the system to maintain accurate beam alignment despite high relative speeds between vehicles, making millimeter wave communication operable in previously unsuitable high-speed scenarios.
Data Source
AI summary
The disclosure includes a system and method for a first communication device to provide a millimeter wave communication service to a second communication device. The method may be performed by the first communication device. The method includes broadcasting a service discovery message describing the availability of the first communication device to provide the millimeter wave communication service. The method includes receiving a first handshake message that describes a request of the second communication device to receive the millimeter wave communication service from the first communication device and transmitting a second handshake message acknowledging receipt of the first handshake message. The method includes determining a future location of the second communication device at a future time. The method includes aligning a beam of a first millimeter wave communication unit of the first communication device with the future location and providing the millimeter wave communication service to the second communication device.