Sidelink Beam Management via Mini-Slot Sensing
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sidelink beams for device-to-device communications, leading to increased latency, resource consumption, and interference, particularly in dynamic channel environments like FR2 frequencies.
Innovation Solution
The implementation of mini-slot based sensing for sidelink reference signal blocks (S-RSBs) allows for reduced latency and resource usage by transmitting shorter S-RSBs that include sidelink control information, enabling efficient beamforming and beam switching while minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional slot-based reference signal transmission is used, then beam management can be performed, but latency increases and resource consumption increases
Solution Approach 1:
The patent segments the traditional slot-based reference signal transmission into mini-slot based S-RSB transmissions. By dividing the slot into smaller mini-slots and transmitting reference signals in these shorter duration units, the system achieves lower latency while maintaining beam management functionality. The SCI indicates the beam burst structure and resources, enabling efficient mini-slot based transmission.
2Productivity
If traditional slot-based reference signal transmission is used, then beam management can be performed, but resource consumption increases
Solution Approach 1:
The patent segments the reference signal transmission into mini-slots, which allows for more efficient resource utilization. The mini-slot based S-RSB transmissions with SCI indicating beam burst structure enable the system to allocate resources more dynamically and efficiently, reducing overall resource consumption while maintaining beam management capabilities.
Solution Approach 2:
The patent introduces dynamic beam bursting with mini-slot based transmissions. The beam burst structure indicated by SCI allows for dynamic adjustment of transmission parameters, enabling the system to adapt to changing channel conditions and optimize resource consumption in real-time.
3Reliability
If traditional reference signal transmission is used, then beam management can be performed, but interference increases
Solution Approach 1:
By segmenting the reference signal transmission into mini-slots with specific beam directions indicated by SCI, the patent reduces interference between different beam transmissions. The mini-slot based structure allows for better time-division multiplexing and reduces overlapping interference while maintaining reliable beam management.
Solution Approach 2:
The patent uses SCI to preliminarily indicate the beam burst structure and associated resources before actual transmission. This preliminary information allows receiving devices to prepare appropriate reception parameters and avoid interference in the time-frequency resources allocated for beam management, thereby reducing harmful interference.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication, including sensing-based sidelink beam management. In some aspects, a user equipment (UE) may transmit, in a first mini-slot of a slot, a first sidelink reference signal block (S-RSB), the first S-RSB including first sidelink control information (SCI) indicating a sidelink beam burst structure and one or more resources associated with the first S-RSB; and transmit, in a second mini-slot of the slot, a second S-RSB, the second S-RSB including second SCI indicating the sidelink beam burst structure and one or more resources associated with the second S-RSB. Numerous other aspects are described.