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High-gain beam handover

專利號
US11399325B2
公開日期
2022-07-26
申請人
Telefonaktiebolaget LM Ericsson (publ)(SE Stockholm)
發(fā)明人
Walter Müller; Rasmus Axén; Carola Faronius
IPC分類
H04W4/00; H04W36/00; H04B7/06; H04L1/00; H04W36/30
技術(shù)領(lǐng)域
trp,ue,beam,handover,gain,triggering,in,host,vector,may
地域: Stockholm

摘要

In one aspect, a network (e.g., a TRP) (150) uses handover triggering information to detect whether a handover triggering condition is present before a radio link fails, and initiates a handover upon detecting the handover triggering condition. In another aspect, a target TRP (152) is provided with beam generating information that enables the target TRP (152) to produce a high-gain beam for use in communicating with a UE (101) without having to perform a beam refinement procedure.

說明書

FIG. 2 illustrates the scenario in which TRP 150 is not able to communicate with UE 101 using any high-gain beam because a structure 112 (e.g., an office building) is between TRP 150 and UE 101. In this scenario, UE 101 may be served by target TRP 152 because UE 101 has moved an area within the coverage of TRP 152. As discussed above, when UE 101 moves around the corner of structure 112, a link (e.g., a DL link and/or an UL link) between TRP 150 and UE 101 goes from good to unreachable almost immediately. In some situations when this occurs the UE 101 must be perform a link reestablishment procedure before it can send data to the network and/or receive data from the network. As illustrated in FIG. 2, by performing the link reestablishment procedure, UE 101 can detect target TRP 152 and initiate the establishment of a new radio link with TRP 152. TRP 152 may fetch UE context information for UE 101 from TRP 150 and initiate a beam refinement procedure so that TRP 152 can establish a new high-gain beam with which to communicate with UE 101. The reestablishment procedure takes some amount of time and during this time the UE 101 may have no service from the network. It is thus advantageous to avoid this scenario.

權(quán)利要求

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