公开(公告)号：US20210029760A1

公开(公告)日：2021-01-28

申请号：US17069957

申请日：2020-10-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lin Shu ,  Yanping Zhang ,  Longyu Cao ,  Runze Zhou

IPC: H04W76/12 ,  H04W76/10 ,  H04W88/16 ,  H04W8/08

Abstract: A service continuity ensuring method, a control plane gateway, and a mobility management network element, where the method includes: receiving, by a control plane gateway (C-GW), current location information of a user equipment (UE) sent by a mobility management network element; selecting, by the C-GW, at least one forwarding distributed gateway (D-GW) for the UE according to the current location information of the UE; establishing, by the C-GW for the UE, a data forwarding tunnel between a source D-GW of the UE and the forwarding D-GW; and establishing a data forwarding tunnel between the forwarding D-GW and a target base station of the UE, where the data forwarding tunnels are used to transmit uplink user plane data and/or downlink user plane data of the UE in a moving process of the UE.

公开(公告)号：US10827543B2

公开(公告)日：2020-11-03

申请号：US16731701

申请日：2019-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lin Shu ,  Yanping Zhang ,  Longyu Cao ,  Runze Zhou

IPC: H04W76/12 ,  H04W8/08 ,  H04W76/10 ,  H04W88/16 ,  H04W88/02 ,  H04W88/08

Abstract: A service continuity ensuring method, a control plane gateway, and a mobility management network element, where the method includes: receiving, by a control plane gateway (C-GW), current location information of a user equipment (UE) sent by a mobility management network element; selecting, by the C-GW, at least one forwarding distributed gateway (D-GW) for the UE according to the current location information of the UE; establishing, by the C-GW for the UE, a data forwarding tunnel between a source D-GW of the UE and the forwarding D-GW, and a data forwarding tunnel between the forwarding D-GW and a target base station of the UE, where the data forwarding tunnels are used to transmit uplink user plane data and/or downlink user plane data of the UE in a moving process of the UE.

公开(公告)号：US10708883B2

公开(公告)日：2020-07-07

申请号：US16451609

申请日：2019-06-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Longyu Cao ,  Lin Shu ,  Yanping Zhang

IPC: H04W68/00 ,  H04W8/08 ,  H04W24/10 ,  H04W40/24 ,  H04W68/04

Abstract: A downlink data notification message sending method and apparatus are disclosed. In an embodiment a method includes receiving, by a user plane network element, a downlink data packet to be sent to a user equipment (UE) and sending, by the user plane network element, an event report message to a control plane network element, wherein the event report message includes a reported event, and wherein the reported event notifies the control plane network element that the downlink data packet matches no bearer.

公开(公告)号：US10595350B2

公开(公告)日：2020-03-17

申请号：US16431261

申请日：2019-06-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lin Shu ,  Yanping Zhang ,  Longyu Cao ,  Runze Zhou

IPC: H04W76/12 ,  H04W8/08 ,  H04W76/10 ,  H04W88/16 ,  H04W88/02 ,  H04W88/08

Abstract: A service continuity ensuring method, a control plane gateway, and a mobility management network element are provided. The method includes receiving, by a control plane gateway (C-GW), current location information of a user equipment (UE) sent by a mobility management network elements, selecting, by the C-GW, at least one forwarding D-GW for the UE according to the current location information of the UE, and establishing, by the C-GW for the UE, a data forwarding tunnel between a source D-GW of the UE and the forwarding D-GW, and a data forwarding tunnel between the forwarding D-GW and a target base station of the UE. The data forwarding tunnels are used to transmit uplink user plane data and/or downlink user plane data of the UE in a moving process of the UE.

公开(公告)号：US20190289652A1

公开(公告)日：2019-09-19

申请号：US16431261

申请日：2019-06-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lin Shu ,  Yanping Zhang ,  Longyu Cao ,  Runze Zhou

IPC: H04W76/12 ,  H04W8/08 ,  H04W88/16 ,  H04W76/10

Abstract: A service continuity ensuring method, a control plane gateway, and a mobility management network element are provided. The method includes receiving, by a control plane gateway (C-GW), current location information of a user equipment (UE) sent by a mobility management network elements, selecting, by the C-GW, at least one forwarding D-GW for the UE according to the current location information of the UE, and establishing, by the C-GW for the UE, a data forwarding tunnel between a source D-GW of the UE and the forwarding D-GW, and a data forwarding tunnel between the forwarding D-GW and a target base station of the UE. The data forwarding tunnels are used to transmit uplink user plane data and/or downlink user plane data of the UE in a moving process of the UE.

公开(公告)号：US20180227984A1

公开(公告)日：2018-08-09

申请号：US15945290

申请日：2018-04-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Yi ,  Hui Jin ,  Guowei Ouyang ,  Yue He ,  Longyu Cao

IPC: H04W88/04 ,  H04W4/06 ,  H04L29/12

CPC classification number: H04W88/04 ,  H04L61/2069 ,  H04L61/2507 ,  H04L61/2585 ,  H04L61/6022 ,  H04L61/6063 ,  H04W4/06 ,  H04W76/40

Abstract: A data communication method, where a first device receives a request message from at least one second device, where the request message requests the first device to forward group data, and the request message carries a group identifier. The first device returns a response message to the at least one second device, where the response message carries a layer-2 address and an Internet Protocol (IP) address corresponding to the group identifier, and the first device sends the group data using the layer-2 address when receiving the group data sent by a third device to the IP address.

公开(公告)号：US20180123962A1

公开(公告)日：2018-05-03

申请号：US15845792

申请日：2017-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiming Li ,  Longyu Cao

IPC: H04L12/853 ,  H04L12/26 ,  H04L29/06

CPC classification number: H04L47/2416 ,  H04L43/0852 ,  H04L65/403 ,  H04L65/4076 ,  H04L65/608 ,  H04L65/80 ,  H04L67/02 ,  H04W4/06 ,  H04W4/08

Abstract: When a Real-Time Transport Protocol (RTP) packet receiving manner of a user equipment (UE) is switched between a unicast transmission manner and a multicast transmission manner, a group communication service application server (GCS AS) obtains a time difference between a time at which the UE receives a first RTP packet before the switching and a time at which the UE receives a second RTP packet after the switching. The GCS AS calculates a delay difference, according to the time difference, of RTP packet transmissions in different transmission manners, and adjusts, according to the delay difference, timing for RTP packet transmission in the unicast transmission manner.

公开(公告)号：US20170318622A1

公开(公告)日：2017-11-02

申请号：US15654284

申请日：2017-07-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Yi ,  Hui Jin ,  Guowei Ouyang ,  Yue He ,  Longyu Cao

IPC: H04W88/04 ,  H04W4/06 ,  H04L29/12

CPC classification number: H04W88/04 ,  H04L61/2069 ,  H04L61/2507 ,  H04L61/2585 ,  H04L61/6022 ,  H04L61/6063 ,  H04W4/06 ,  H04W76/40

Abstract: A data communication method, where a first device receives a request message from at least one second device, where the request message requests the first device to forward group data, and the request message carries a group identifier. The first device returns a response message to the at least one second device, where the response message carries a layer-2 address and an Internet Protocol (IP) address corresponding to the group identifier, and the first device sends the group data using the layer-2 address when receiving the group data sent by a third device to the IP address.