Delay-Doppler-Resolution Selection for High Mobility Transceivers
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Solution Overview
Problem
Existing mobile communication systems, such as OFDM, face significant performance degradation and inflexibility in high mobility environments due to high Doppler spreads, particularly in vehicle-to-vehicle (V2V) communication scenarios.
Innovation Solution
The proposed solution involves selecting a delay-Doppler-resolution (DDR) from a database based on the properties of the transceiver, such as velocity and geographical position, to optimize radio communication in mobile communication systems. This approach enables adaptation of the DDR to specific transceiver properties and continuous improvement based on tracked radio performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If OFDM is used in mobile communication systems, then spectral efficiency is improved, but performance degrades in high mobility environments due to high Doppler spreads
Solution Approach 1:
The patent applies dynamics by making the delay-Doppler-resolution configuration adaptable and changeable based on transceiver properties. Instead of using a fixed OFDM configuration, the system dynamically selects from multiple pre-calculated delay-Doppler-resolutions stored in a database, allowing the communication system to adapt to varying mobility conditions and maintain both spectral efficiency and reliability.
Solution Approach 2:
The patent changes the parameters of the communication system by selecting different delay-Doppler-resolutions from a database based on transceiver properties such as velocity and geographical position. This parameter selection approach allows optimization of both spectral efficiency and communication performance for different mobility scenarios without requiring complex real-time calculations.
2Device complexity
If a fixed delay-Doppler-resolution is used, then device complexity is reduced, but adaptability to different transceiver properties deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing multiple delay-Doppler-resolutions in a database before actual communication occurs. These pre-computed configurations are organized based on transceiver properties, enabling quick selection during operation without requiring complex real-time calculations, thus maintaining low device complexity while achieving high adaptability.
Solution Approach 2:
The system achieves adaptability through dynamic selection from pre-computed configurations. The delay-Doppler-resolution is not fixed but can be changed based on transceiver properties like velocity and geographical position, allowing the system to adapt to different scenarios while keeping the implementation relatively simple.
3Reliability
If delay-Doppler-resolution is optimized for specific conditions, then communication reliability is improved, but system flexibility deteriorates
Solution Approach 1:
The patent applies universality by creating a database that contains multiple delay-Doppler-resolutions applicable to various transceiver properties and mobility scenarios. A single system framework can serve multiple functions by selecting appropriate configurations from the database, thereby achieving both optimized reliability for specific conditions and overall system flexibility through the universal database structure.
Data Source
AI summary
An access node, user equipment, an apparatus, method, and computer program for determining a delay-Doppler-resolution for a transceiver of a mobile communication system. The method for determining a delay-Doppler-resolution (DDR) for a transceiver of a mobile communication system includes determining information on properties of the transceiver, selecting the DDR from a database based on the information on the properties of the transceiver, and using the DDR for radio communication with the transceiver in the mobile communication system.