Sidelink Beam Sweeping Resource Selection for Fast mmWave Alignment
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Solution Overview
Problem
Current vehicle-to-everything (V2X) technologies are limited by the sub-6G frequency band, which cannot meet the requirements of ultra-large throughput, ultra-low latency, and ultra-high reliability needed for future applications, and lack support for sidelink millimeter wave communications, especially in high-speed environments.
Innovation Solution
A resource selection method and apparatus that enables beam sweeping by determining a candidate resource set, selecting a transmission resource, and transmitting a beam sweeping channel to establish a millimeter wave communications link, allowing for fast beam alignment and alignment on a sidelink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sub-6G frequency band is used for V2X communication, then current deployment is supported, but ultra-large throughput, ultra-low latency, and ultra-high reliability requirements cannot be met
Solution Approach 1:
The patent transitions from sub-6G frequency band to millimeter wave frequency band, changing the fundamental operating parameters of the communication system. This parameter change enables ultra-large throughput and ultra-high reliability by utilizing the wider bandwidth and higher frequency characteristics of millimeter wave, directly addressing the limitations of sub-6G bands
2Productivity
If millimeter wave frequency band is used, then system performance is improved by several orders of magnitude, but beam-based communication complexity is introduced
Solution Approach 1:
The patent performs beam sweeping and beam alignment procedures in advance before actual data transmission. By pre-establishing optimal beam pairs through sweeping channels and measuring beam reports, the system prepares the beam configuration beforehand, reducing real-time complexity during actual communication
Solution Approach 2:
The patent implements a feedback mechanism where the receiving device measures beam power and sends beam reports back to the transmitting device. This feedback loop enables adaptive beam selection and optimization, allowing the system to automatically adjust beam configurations based on channel conditions, thereby managing beam complexity through intelligent control
3Speed
If beam sweeping is implemented for millimeter wave communication, then fast beam alignment is achieved, but resource selection complexity increases
Solution Approach 1:
The patent divides the beam sweeping process into distinct phases: candidate resource set determination, beam sweeping channel transmission, beam power measurement, and beam report generation. By segmenting the complex beam alignment process into manageable steps, the system achieves fast beam alignment while controlling resource selection complexity through structured procedure design
Data Source
AI summary
A resource selection method applied to a first device includes: determining a first candidate resource set for beam sweeping; selecting a first transmission resource in the first candidate resource set; and sending a beam sweeping channel to a second device on the first transmission resource. A resource selectin method applied to a second device includes: receiving a beam sweeping channel transmitted by a first device; performing beam power measurement according to the beam sweeping channel, to obtain a beam report; and transmitting the beam report to the first device.