User Equipment Node Mapping for mmWave Device Discovery
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Solution Overview
Problem
In high-frequency wireless communication systems like mmWave band, V2X nodes face challenges in identifying all intended communication devices due to the directive nature of links, leading to inefficient data transmission and potential safety issues in vehicle-to-everything communications.
Innovation Solution
A method for user equipment to improve position information by generating a node map using map information and radio channel information, allowing for better beamforming and communication adjustments, which can be shared among devices to enhance connectivity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If directive beamforming is used at mmWave frequencies to focus radiate power, then communication reliability is improved, but the ability to identify all intended communication devices deteriorates
Solution Approach 1:
The patent segments the communication process into two phases: a discovery phase using omnidirectional or wide-beam transmission to identify all potential communication devices, and a data transmission phase using directive beamforming for reliable communication. This segmentation allows the system to maintain both device identification capability and communication reliability.
Solution Approach 2:
The patent implements dynamic beam adjustment where the beamforming direction and width are adapted based on the communication phase. During device discovery, omnidirectional or wide beams are used; during data transmission, narrow directive beams are employed. This dynamic adaptation resolves the contradiction between identification capability and communication reliability.
2Use of energy by moving object
If directive beamforming is used to focus radiate power, then power efficiency is improved, but coverage area deteriorates
Solution Approach 1:
The system dynamically adjusts beam width and direction based on operational requirements. During device discovery, wide beams provide extensive coverage; during data transmission, narrow beams concentrate power efficiently. This dynamic behavior allows the system to achieve both wide coverage and power efficiency at different stages.
Solution Approach 2:
The patent performs preliminary device discovery using wide beams before switching to power-efficient directive beamforming for data transmission. This preliminary action ensures that all potential communication devices are identified before concentrating power on specific targets, resolving the coverage-area versus power-efficiency contradiction.
3Adaptability or versatility
If omnidirectional transmission is used to identify all communication devices, then device identification capability is improved, but power efficiency deteriorates
Solution Approach 1:
The communication process is segmented into discovery phase (using omnidirectional transmission for device identification) and transmission phase (using directive beamforming for power-efficient data communication). This segmentation allows the system to achieve both device identification capability and power efficiency without compromise.
Solution Approach 2:
The system periodically performs omnidirectional device discovery followed by directed communication sessions. This periodic alternation between wide-area scanning and focused transmission allows the system to maintain device identification capability while achieving power efficiency during actual data communication periods.
Data Source
AI summary
A method for user equipment to improve position information of one or more communication devices including obtaining map information about positions of the one or more communication devices, determining radio channel information about the one or more communication devices by analyzing a radio channel, and generating a node map having improved position information of the one or more communication devices using the map information and the radio channel information.