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公开(公告)号：US11019543B2
公开(公告)日：2021-05-25
申请号：US16394693
申请日：2019-04-25
Applicant: Samsung Electronics Co., Ltd.
Inventor： Naveen Kumar , Sunil Kumar , Karthikeyan Subramaniam
Abstract: A method for managing handover procedure in a radio access network (RAN) includes initiating, by a source base station, a handover procedure for a first user equipment with a target base station, wherein the first user equipment is connected to the source base station; identifying, by the source base station, a second user equipment that functions as a relay device, for relaying data related to the first user equipment from the source base station to the first user equipment during the handover procedure; establishing, by the source base station, a first connection between the identified second user equipment and the first user equipment; transmitting, by the source base station, buffered data corresponding to the first user equipment, to the target base station; transmitting, by the source base station, at least one block of data from the buffered data to the first user equipment, via the second user equipment, during the handover procedure for the first user equipment from the source base station to the target base station; and disconnecting, by the source base station, the established first connection between the second user equipment and the first user equipment, upon receiving a sequence number (SN) status request message from the target base station.
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公开(公告)号：US20190335370A1
公开(公告)日：2019-10-31
申请号：US16394693
申请日：2019-04-25
Applicant: Samsung Electronics Co., Ltd.
Inventor： Naveen Kumar , Sunil Kumar , Karthikeyan Subramaniam
Abstract: A method for managing handover procedure in a radio access network (RAN) includes initiating, by a source base station, a handover procedure for a first user equipment with a target base station, wherein the first user equipment is connected to the source base station; identifying, by the source base station, a second user equipment that functions as a relay device, for relaying data related to the first user equipment from the source base station to the first user equipment during the handover procedure; establishing, by the source base station, a first connection between the identified second user equipment and the first user equipment; transmitting, by the source base station, buffered data corresponding to the first user equipment, to the target base station; transmitting, by the source base station, at least one block of data from the buffered data to the first user equipment, via the second user equipment, during the handover procedure for the first user equipment from the source base station to the target base station; and disconnecting, by the source base station, the established first connection between the second user equipment and the first user equipment, upon receiving a sequence number (SN) status request message from the target base station.
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公开(公告)号：US11375416B2
公开(公告)日：2022-06-28
申请号：US16887739
申请日：2020-05-29
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sunil Kumar , Naveen Kumar , Karthikeyan Subramaniam
Abstract: Provided is a method for optimizing radio resource for Ultra-Reliable Low Latency Communication services in a Dual Connectivity technology. The method includes: receiving DownLink (DL) data by a UE using a first Radio Access Technology (RAT) from a base station; transmitting a first Acknowledgement (ACK) signal using the first RAT to the base station based on the DL data being successfully received; updating a Mapping Table Sequence Number of the DL data in a Mapping Table by the UE, based on the DL data being successfully received by the UE using the first RAT; checking the Mapping Table by the UE upon detecting an error in the received DL data using a second RAT; and sending a second ACK signal to the base station using the second RAT of the UE based on the Mapping Table Sequence Number of the DL data being found in the Mapping Table.
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