US 2022/0030644 A1Published application

Inter-menb handover method and device in a small cell system

AssigneeSamsung Electronics Co., Ltd.

InventorsLixiang XU, Xiaowan KE, Hong WANG

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Abstract

An embodiment of the present disclosure may provide an inter-MeNB handover method in a small cell system, including: making, by a source MeNB and/or target MeNB, a determination as to whether to maintain a SeNB when handover is performed; and triggering different handover processes according to a result of the determination as to whether to maintain the SeNB. Another embodiment of the present disclosure may further provide an inter-MeNB handover device in a small cell system. With the inter-MeNB handover method and device in a small cell system provided by the present disclosure, unnecessary deletion and re-establishment of the bearers at the SeNB for the UE may be reduced. False bearer deletion may be avoided and data forwarding may be reduced. Furthermore, the SeNB may be maintained according to network deployment and SGW re-selection may be supported. Therefore, system capacity and transmission speed of the data may be improved.

Claims5

Dependent claims

An inter-master node (MN) handover method to a target MN from a source MN which provides dual-connectivity together with a secondary node (SN), the method comprising:

receiving, by the target MN, a handover request message from the source MN, wherein the handover request message comprises an identity (ID) of a user equipment (UE) allocated at the SN and an ID of the SN;
sending, by the target MN to the SN, a configuration request message including the ID of the UE allocated at the SN;
receiving, by the target MN from the SN, a configuration request acknowledge message;
sending, by the target MN to the source MN, a handover request acknowledge message including information indicating that an UE context in the SN is kept;
sending, by the target MN, a configuration completion message to the SN;
sending, by the target MN, a path switch request message to a mobility management entity;
and
receiving, by the target MN, a path switch request acknowledge message from the mobility management entity,
wherein the ID of the UE allocated at the SN is application protocol ID of the UE over an interface between the source MN and the SN.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/497,486Filed 8 Oct 2021
Priority: CN 201410328143.510 Jul 2014
Published: 27 Jan 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04W 76/11
Connection setup: allocation or use of connection identifiers
H04W 36/0058
Transmission or use of information for re-establishing the radio link: transmission of hand-off measurement information, e.g. measurement reports
H04W 36/0061
Transmission or use of information for re-establishing the radio link: of neighbour cell information
H04W 36/00695
In case of dual connectivity, e.g. decoupled uplink/downlink: using split of the control plane or user plane

Family

Application15/322,042Continuation · filed 23 Dec 2016
Application16/790,065Continuation · filed 13 Feb 2020
Application16/902,621Continuation · filed 16 Jun 2020
Application17/497,486Continuation
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From the US filing history. Foreign family members aren’t listed.