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Conditional handovers for wireless relay networks

專(zhuān)利號(hào)
US11997551B2
公開(kāi)日期
2024-05-28
申請(qǐng)人
SHARP KABUSHIKI KAISHA(JP Sakai)
發(fā)明人
Atsushi Ishii
IPC分類(lèi)
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(shuō)明書(shū)

?eventA7 SEQUENCE { ??a7-timeToTrigger ?} ?eventA8 SEQUENCE { ??... ?} ?}, ...

Thus, in one configuration, a handover may be executed immediately after a configured triggering event(s) is evaluated. In another configuration, a final decision to execute the conditional handover may be made upon or after a timer (such as aforementioned Tyyy) expires, where the timer may be started upon receiving from its parent node a notification indicating an RLF (e.g. Upstream RLF Notification). The timer may stop (no handover executed) in a case that another notification indicating an RLF recovery (i.e. successful connection reestablishment) (e.g. Upstream Recovery notification) is received. The use of timers such as those mentioned above may be understood in conjunction with preceding example embodiments and modes, such as FIG. 8, FIG. 9A, and FIG. 9B, for example.

權(quán)利要求

1
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