Sidelink V2X Data Transmission With Multi-TCI Beam Management
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Solution Overview
Problem
In wireless communication systems, the use of omnidirectional or wide beams for sidelink communication leads to a decrease in beamforming gain, resulting in reduced data throughput, especially in frequency range 2 (FR2) environments.
Innovation Solution
Implementing multiple transmission configuration indications (TCIs) for both the physical sidelink control channel (PSCCH) and physical sidelink shared channel (PSSCH) to adjust beamforming based on different TCI states, allowing for both wide and narrow beams to enhance data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If omnidirectional or wide beams are used for sidelink communication, then coverage area is improved, but beamforming gain decreases
Solution Approach 1:
The patent applies dynamics by enabling the wireless communication device to switch between different TCI states (wide beam and narrow beam) based on communication requirements. The device can dynamically adjust the beam width by selecting different TCI states for PSCCH and PSSCH, allowing optimization between coverage area and beamforming gain depending on the specific communication scenario and channel conditions.
2Productivity
If narrow beams are used to increase beamforming gain, then data throughput is improved, but coverage area is reduced
Solution Approach 1:
The system enables dynamic beam width adjustment by allowing different TCI states to be associated with different beam configurations. The wireless communication device can select narrow beams when high data throughput is required and wide beams when broader coverage is needed, making the system adaptable to varying operational requirements.
Solution Approach 2:
The patent changes the parameter of beam width by utilizing different TCI states that correspond to different spatial filter configurations. By changing the TCI state selection, the system can adjust the beam width parameter to optimize either data throughput (narrow beam) or coverage area (wide beam) based on current communication needs.
3Adaptability or versatility
If multiple TCI states are implemented, then beamforming flexibility is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by having the wireless communication device handle multiple TCI states through a unified mechanism. The device uses the same SCI structure and processing logic to manage both wide beam and narrow beam configurations, reducing the actual complexity increase despite the added flexibility in beamforming.
Data Source
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AI summary
The present disclosure provides methods and apparatuses for performing sidelink-based vehicle to everything (V2X) communication. In some embodiments, an operation method includes receiving, by the second device from the first device during a first symbol period, a physical sidelink control channel (PSCCH) and a first physical sidelink shared channel (PSSCH), based on a first transmission configuration indication (TCI) state assigned to the PSCCH. The first symbol period includes first symbols on which the PSCCH and the first PSSCH are received. The operation method further includes receiving, by the second device from the first device during a second symbol period that follows the first symbol period, a second PSSCH, based on a second TCI state. The second symbol period includes second symbols on which the second PSSCH is received.