US 11,963,052 B2Granted

Handover reliability enhancement in wireless communication

AssigneeSamsung Electronics Co., Ltd.

InventorsJeongho Jeon, Kyeongin Jeong, Joonyoung Cho, Andrew Park, Eunsun Kim

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method for user equipment (UE) service handover from the serving cell to a target cell includes information regarding a handover timer and an associated handover execution condition. For scheduled handover to be performed upon expiration of the handover timer, the associated handover execution condition comprises one or more abort conditions for aborting the scheduled handover. For two-stage triggered handover to be performed upon receipt of a subsequent triggering message, the handover timer is a handover validity timer and the associated handover execution condition comprises receipt of the handover triggering message prior to expiration of the handover validity timer.

Claims20

Dependent claims

A serving cell, comprising:

a processor configured to generate a radio resource control (RRC) reconfiguration message including information indicating handover execution conditions and handover cancelation conditions for conditional handover (CHO) of service for a user equipment (UE) from the serving cell to a target cell, wherein:
a first of the handover execution conditions is based on whether a distance between the UE and a reference location is less than a threshold value,
a second of the handover execution conditions is based on whether a time elapsed from when the UE received the RRC reconfiguration message is greater than a threshold value, and
a first of the handover cancelation conditions is based on whether a distance between the UE and the reference location is greater than a threshold value;
and
a transceiver operably coupled to the processor, the transceiver configured to:
transmit, to the UE, the RRC reconfiguration message, and
receive a handover completion acknowledgement based on completion of the CHO from the serving cell to the target cell.

5 more elements

A user equipment (UE), comprising:

a transceiver configured to receive a radio resource control (RRC) reconfiguration message including information indicating handover execution conditions and handover cancelation conditions for conditional handover (CHO) of service for a user equipment (UE) from a serving cell to a target cell, wherein:
a first of the handover execution conditions is based on whether a distance between the UE and a reference location is less than a threshold value,
a second of the handover execution conditions is based on whether a time elapsed from when the UE received the RRC reconfiguration message is greater than a threshold value, and
a first of the handover cancelation conditions is based on whether a distance between the UE and the reference location is greater than a threshold value;
and
a processor operably coupled to the transceiver, the processor configured to determine whether to initiate the CHO based on the handover execution conditions and the handover cancelation conditions,
wherein the transceiver is configured to transmit a handover completion acknowledgement based on completion of the CHO from the serving cell to the target cell.

4 more elements

A method for operating a user equipment (UE), the method comprising:

receiving a radio resource control (RRC) reconfiguration message including information indicating handover execution conditions and handover cancelation conditions for conditional handover (CHO) of service for a user equipment (UE) from a serving cell to a target cell, wherein:
a first of the handover execution conditions is based on whether a distance between the UE and a reference location is less than a threshold value,
a second of the handover execution conditions is based on whether a time elapsed from when the UE received the RRC reconfiguration message is greater than a threshold value, and
a first of the handover cancelation conditions is based on whether a distance between the UE and the reference location is greater than a threshold value;
determining whether to initiate the CHO based on the handover execution conditions and the handover cancelation conditions;
and
transmitting a handover completion acknowledgement based on completion of the CHO from the serving cell to the target cell.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/450,550Filed 11 Oct 2021 · us provisional application
Priority: 16 Oct 2020
Published: US 2022/0124580 A121 Apr 2022
Granted: 16 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04W 36/0088
Hand-off measurements: scheduling hand-off measurements
H04W 36/249
Reselection being triggered by specific parameters: according to timing information
H04W 36/362
By user or terminal equipment: conditional handover
H04W 36/322
By location or mobility data, e.g. speed data: by location data

Family

Application63/092,777Us provisional application · filed 16 Oct 2020
Application63/158,178Us provisional application · filed 8 Mar 2021
US 2022/0124580 A1Pre-grant publication · published 21 Apr 2022
US 11,917,466 B2Related patent
US 11,963,052 B2This patent

From the US filing history. Foreign family members aren’t listed.