Sub-THz Link Activation via Primary Cell Synchronization
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Solution Overview
Problem
High-power, high-complexity, and high-latency synchronization and beam management procedures in subTHz wireless communication systems lead to inefficiencies in initial acquisition processes, particularly for multi-dimensional searches in burst communications.
Innovation Solution
A method for low-complexity, low-power, and low-latency synchronization and beam management sessions is introduced, reducing the scope of multi-dimensional searches by utilizing configuration parameters from a primary frequency band to facilitate efficient subTHz single or multi-hop link activation, with synchronization and beam management procedures based on the characteristics of the primary cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional synchronization and beam management procedures are used for subTHz link activation, then comprehensive beam coverage and synchronization accuracy are achieved, but power consumption increases, acquisition latency increases, and system complexity increases
Solution Approach 1:
The patent applies preliminary action by performing synchronization and beam management procedures on a primary cell before subTHz link activation. The UE receives configuration parameters and reference signals in advance through the primary cell, prepares synchronization information, and establishes beam directions beforehand. This preliminary preparation eliminates the need for extensive multi-dimensional searches during actual subTHz link activation, significantly reducing power consumption while maintaining synchronization accuracy.
2Measurement precision
If traditional multi-dimensional search procedures are performed for subTHz link activation, then beam alignment accuracy is improved, but initial acquisition latency increases
Solution Approach 1:
The patent performs beam alignment and synchronization measurements in advance through the primary cell before subTHz link activation. The UE receives reference signals and configuration parameters that enable pre-computation of beam directions and synchronization timing. This preliminary beam training and synchronization preparation stores essential alignment information that can be quickly applied during subTHz link activation, achieving accurate beam alignment without time-consuming multi-dimensional searches.
Solution Approach 2:
The patent applies copying by reusing synchronization information, beam directions, and configuration parameters obtained from the primary cell for the subTHz link activation. Instead of performing independent multi-dimensional searches, the UE copies and adapts the previously established synchronization state and beam management parameters from the primary cell to the subTHz link, significantly reducing acquisition latency while maintaining beam alignment accuracy.
3Reliability
If independent synchronization procedures are performed for each subTHz link activation, then link independence and reliability are maintained, but system complexity and processing overhead increase
Solution Approach 1:
The patent applies universality by establishing a primary cell that serves multiple functions: it provides synchronization, beam management, and configuration parameters for subTHz link activation. The primary cell's synchronization infrastructure is reused across multiple subTHz link activations, eliminating the need for separate independent synchronization procedures for each link. This multi-functional approach maintains link independence through proper parameter isolation while significantly reducing system complexity and processing overhead.
Data Source
AI summary
An apparatus configured to receive, from a first network node via a first frequency band, a first indication of a set of configuration parameters for a synchronization session for a second frequency band; receive, from a second network node via the second frequency band and based on the first indication, a set of reference signals associated with the synchronization session; and transmit, to the first network node via the first frequency band, a second indication of at least one of a synchronization state or a beam management report associated with the synchronization session for the second frequency band.