Sidelink Synchronization Signaling for FR2 Beam Source Identification
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Solution Overview
Problem
In the FR2 5G NR sidelink system, beam management is hindered by the inability to distinguish different UEs and beam directions using sidelink synchronization signal blocks, leading to poor communication quality.
Innovation Solution
Incorporating indication information into sidelink synchronization signal blocks to differentiate between terminal devices and beam directions, using identifiers and indices like SL-SSID, S-PSS, S-SSS, and PSBCH DMRS to facilitate beam management and improve communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sidelink synchronization signal blocks are used for FR2 beam management, then beam management capability is improved, but the ability to distinguish different UEs and beam directions deteriorates
Solution Approach 1:
The patent segments the sidelink synchronization signal block into multiple components, each carrying different types of indication information. Specifically, it divides the signal structure to include first indication information for UE identification and second indication information for beam direction identification, allowing simultaneous achievement of beam management capability and distinguishability
Solution Approach 2:
The patent applies local quality by assigning different functional properties to different parts of the synchronization signal block. Certain fields carry UE identification information while other fields carry beam direction information, enabling each part to serve its specific purpose and collectively resolve the contradiction between beam management and distinguishability
2Loss of information
If indication information is added to sidelink synchronization signal blocks, then the ability to distinguish terminal devices and beam directions is improved, but signal block complexity increases
Solution Approach 1:
The patent makes the sidelink synchronization signal block multi-functional by incorporating it into both synchronization procedures and beam management operations. The same signal block structure serves dual purposes: maintaining synchronization while providing UE and beam direction identification, thereby improving distinguishability without proportionally increasing complexity
Solution Approach 2:
The patent changes the parameter structure of the synchronization signal block by adding indication information fields. It modifies existing parameters or introduces new ones to carry identification data, enabling enhanced distinguishability through parameter optimization rather than structural complexity increase
Data Source
AI summary
This application provides a communication method, apparatus, and system, which can be applied to a sidelink communication system. In the method, indication information of a transmit end is carried in a sidelink synchronization signal block, so that a receive end of the sidelink synchronization signal block can identify a source of a sidelink synchronization signal (or identify the transmit end of the sidelink synchronization signal block) based on the indication information. This facilitates subsequent beam management and other processes, and helps improve communication quality.