Sidelink Reception Scheduling for Limited Multi-Beam Terminals
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Solution Overview
Problem
A terminal device with limited capabilities cannot perform directional reception based on multiple reception beams simultaneously, leading to compromised quality of sidelink communication.
Innovation Solution
The terminal device sends non-overlapping time information to multiple terminal devices to prevent simultaneous sidelink information transmission, allowing it to receive the information using different reception beams, and employs inter-user equipment coordination and resource management to optimize communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device uses directional reception with multiple reception beams to receive sidelink information from multiple transmission terminals, then the reception quality and communication reliability are improved, but the terminal device capability requirements increase and cannot be supported by devices with limited capabilities
Solution Approach 1:
The patent segments the time domain to divide sidelink communication into multiple time slots. Each time slot is allocated for receiving information from a specific transmission terminal using a specific reception beam. This temporal segmentation allows the terminal device to sequentially receive information from multiple transmission terminals without requiring simultaneous multi-beam capability, thus resolving the contradiction between communication quality and device capability.
2Productivity
If multiple transmission terminals transmit sidelink information simultaneously using different transmission beams, then the communication efficiency and productivity are improved, but time overlap occurs causing reception conflicts and quality degradation
Solution Approach 1:
The patent introduces a resource indication message sent by the first transmission terminal before actual data transmission. This message indicates the time slot and reception beam configuration that will be used. By receiving this preliminary information in advance, the terminal device can properly configure its reception settings and avoid timing conflicts, enabling efficient simultaneous transmissions from multiple terminals while maintaining communication quality.
3Productivity
If the terminal device receives sidelink information from multiple transmission terminals in overlapping time using different reception beams, then the communication productivity is improved, but the terminal device with limited capability cannot handle multiple simultaneous beams
Solution Approach 1:
The patent introduces a time dimension to the reception process by allocating different time slots for receiving information from different transmission terminals. Instead of requiring the terminal device to handle multiple simultaneous beams in the spatial domain, the system multiplexes communications in the time domain. This dimensional transformation allows multiple simultaneous transmissions to occur without creating reception conflicts, as each transmission occupies a distinct time slot.
Data Source
AI summary
This application discloses a sidelink communication method, an apparatus, and a communication system, and relates to the field of wireless communication technologies. The method includes: A first terminal device indicates time in which a second terminal device sends sidelink information or a resource used by the second terminal device to send the sidelink information, to prevent a plurality of terminal devices from sending sidelink information to the first terminal device in overlapping time, so that the first terminal device can receive, based on non-overlapping time, the sidelink information sent by the plurality of terminal devices, to improve quality of sidelink communication between the terminal devices.