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Conditional handovers for wireless relay networks

專利號
US11997551B2
公開日期
2024-05-28
申請人
SHARP KABUSHIKI KAISHA（JP Sakai）
發(fā)明人
Atsushi Ishii
IPC分類
H04W36/12; H04W36/00; H04W36/30
技術(shù)領(lǐng)域
node,iab,message,wireless,rlf,handover,radio,child,access,may
地域： Osaka

摘要

A wireless node that communicates over a radio interface with a wireless access node of a radio access network (RAN) through an Integrated Access and Backhaul (IAB) node, the wireless node comprising: receiver circuitry configured to: receive from the wireless access node a reconfiguration message comprising a conditional handover configuration, the conditional handover configuration comprising a triggering condition and a configuration of a candidate target cell, the triggering condition comprising at least one threshold value; receive from the IAB node a notification message comprising information representing a radio condition measured on a path between the IAB node and the wireless access node, and; processor circuitry configured to perform, based on the triggering condition and the information, a handover using the configuration of the candidate target cell.

說明書

After the coordination of act 15-3 is completed, as act 15-4 the Child Node 30 (in the RRC_CONNECTED state, as indicated by act 15-1) may receive the conditional handover preparation message 40. In an example embodiment and mode, the conditional handover preparation message 40 may be a RRCReconfiguration message comprising potential target cells, e.g. the cell served by Node B or IAB-node 24B, and one or more conditions for an autonomous handover. In the example flow of FIG. 15, the conditions may include a reception of the Upstream RLF notification. The other non-limiting examples of conditions may include or comprise signal quality thresholds for the downlink signals from the currently serving node, e.g., Node A=IAB-node 24A), as well as some of the other aforementioned notifications, such as Upstream Disconnect notification.

權(quán)利要求

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