Reference signal configuration for secondary cell activation

By employing transient reference signals with configured parameters, the activation time of secondary cells in wireless communication systems is reduced, improving efficiency and reliability, and enhancing user experience.

JP7869203B2Active Publication Date: 2026-06-02QUALCOMM INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
QUALCOMM INC
Filing Date
2021-10-22
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The activation of secondary cells in wireless communication systems, such as 5G NR, can take a relatively long duration due to the use of periodic synchronous signal block transmissions, which prolongs the time required for measurements like automatic gain control and frequency tracking.

Method used

The implementation of transient or non-periodic reference signals, configured by parameters such as carrier, slot position, and beam configuration, to facilitate faster activation of secondary cells by reducing reliance on periodic SSB transmissions.

Benefits of technology

This approach significantly reduces the activation time of secondary cells, enhancing communication efficiency, reliability, and user experience by enabling faster data throughput and lower latency.

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Abstract

A method, system, and device for wireless communication are described, in which a temporary reference signal may be configured to be used for secondary cell (SCell) activation. A user equipment (UE) may perform wireless communication with a first serving cell supported by a base station and may receive an indication that the SCell is activated. As a result of activating the SCell, the UE may perform one or more measurements on the reference signal of the activated SCell. The one or more measurements may be performed on the SCell's temporary reference signal having one or more parameters that are indicated to the UE along with the SCell activation information. The one or more parameters may be indicated by downlink control information (DCI), one or more medium access control (MAC) control elements, implicit signaling, or any combination thereof.
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