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公开(公告)号：US20210195401A1
公开(公告)日：2021-06-24
申请号：US17197546
申请日：2021-03-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Longyu Cao , Yijun Yu
Abstract: This application provides a signaling transmission interface compatibility method and apparatus. The method includes: A first network element obtains capability information of an access and mobility management function network element, where the capability information is used to indicate that the access and mobility management function network element has a capability of performing signaling transmission with a radio access network through a target interface function network element. The first network element selects the target interlace function network element based on the capability information, where the target interface function network element is used for signaling transmission between the access and mobility management function network element and the radio access network. Therefore, according to the technical solutions provided in this application, the first network element obtains the capability information of the access and mobility management function network element, and selects the corresponding target interlace function network element based on the capability information.
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2.发明授权公开(公告)号：US10701605B2
公开(公告)日：2020-06-30
申请号：US15473850
申请日：2017-03-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lin Shu , Longyu Cao , Fenqin Zhu
Abstract: A dedicated network handover method, a dedicated network type notification method, and a device, so as to ensure that user equipment (UE) is handed over to a dedicated core network (CN) network element of a corresponding CN type in a handover process, are presented. The CN network element device mainly includes a receiver configured to receive CN type information of UE sent by a first dedicated CN network element; a processor configured to determine, according to the CN type information, identifier information of a second dedicated CN network element that supports a CN type indicated by the CN type information; and the processor configured to hand over, according to the identifier information, the UE to the second dedicated CN network element corresponding to the identifier information.
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公开(公告)号：US10652156B2
公开(公告)日：2020-05-12
申请号：US15845792
申请日：2017-12-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhiming Li , Longyu Cao
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.
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4.发明申请公开(公告)号：US20200137813A1
公开(公告)日：2020-04-30
申请号：US16731701
申请日：2019-12-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lin Shu , Yanping Zhang , Longyu Cao , Runze Zhou
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.
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公开(公告)号：US20170295029A1
公开(公告)日：2017-10-12
申请号：US15632136
申请日：2017-06-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhiming Li , Longyu Cao
IPC: H04L12/18 , H04N7/167 , H04W84/02 , H04N7/16 , H04N21/235 , H04W4/12 , H04N21/234 , G08B25/08
CPC classification number: H04L12/18 , G08B25/085 , H04N7/163 , H04N7/165 , H04N7/1675 , H04N21/23412 , H04N21/235 , H04W4/06 , H04W4/12 , H04W56/00 , H04W84/02
Abstract: The present disclosure discloses a data transmission method and apparatus. User equipment (UE) measures and transmits a transmission delay to a group communication service application server (GCS AS), or the GCS AS itself determines a transmission delay, so that the GCS AS may determine, according to the transmission delay, a time of sending a packet on a multicast path or a unicast path. Therefore, a problem of out of order of packets or a loss of a packet due to a transmission delay is resolved, and continuity of a communication service is maintained.
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Patent Agency Ranking
公开(公告)号：US11956691B2
公开(公告)日：2024-04-09
申请号：US17490447
申请日：2021-09-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Longyu Cao , Yaoguang Wang , Yijun Yu
CPC classification number: H04W36/32 , H04W36/0061 , H04W36/00835 , H04W40/36 , H04W60/04
Abstract: One example method includes receiving, by a first mobility management network element, a first cell identifier and a network identifier from a first network element, where the network identifier includes an identifier of a first private network and an identifier of a second private network. The first mobility management network element can then obtain information about a second network element based on the first cell identifier and the network identifier, where the first network element serves a terminal device in the first private network, and where the second network element serves the terminal device in the second private network. The first mobility management network element can then send the first cell identifier and the network identifier to the second network element indicated by the information about the second network element, where the first cell identifier and the network identifier are used to obtain downlink routing information.
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公开(公告)号：US11044696B2
公开(公告)日：2021-06-22
申请号：US16907859
申请日：2020-06-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Longyu Cao , Lin Shu , Yanping Zhang
Abstract: A downlink data notification message sending method and apparatus are disclosed. In an embodiment a method includes receiving, a delay instruction from a mobility management network element, which is used to instruct a control plane network element to delay sending a DDN message, receiving, an event report message includes a reported event from a user plane network element, and the reported event is used to notify the control plane network element that a downlink data packet sent to UE matches no bearer, determining, that the UE is registered in the mobility management network element, and if the control plane network element has not received, within a first time period, routing information of a base station, sending, the DDN message to the mobility management network element when the first time period expires.
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公开(公告)号：US10536284B2
公开(公告)日：2020-01-14
申请号：US15632136
申请日：2017-06-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhiming Li , Longyu Cao
IPC: H04N7/173 , H04L12/18 , H04W56/00 , G08B25/08 , H04N7/16 , H04N7/167 , H04N21/234 , H04N21/235 , H04W4/12 , H04W84/02 , H04W4/06
Abstract: The present disclosure discloses a data transmission method and apparatus. User equipment (UE) measures and transmits a transmission delay to a group communication service application server (GCS AS), or the GCS AS itself determines a transmission delay, so that the GCS AS may determine, according to the transmission delay, a time of sending a packet on a multicast path or a unicast path. Therefore, a problem of out of order of packets or a loss of a packet due to a transmission delay is resolved, and continuity of a communication service is maintained.
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公开(公告)号：US10448348B2
公开(公告)日：2019-10-15
申请号：US15700661
申请日：2017-09-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhiming Li , Longyu Cao , Fenqin Zhu
Abstract: Embodiments of the present disclosure provide an RTP packet transmission method and apparatus. A GCS AS or a BM-SC provides synchronization source information of the GCS AS and synchronization source information of the BM-SC for UE, so that the UE can continuously receive RTP packets. On one hand, the GCS AS (or the BM-SC) may provide the synchronization source information of the GCS AS (or the synchronization source information of the BM-SC) for the UE by sending an RTP packet. On the other hand, the GCS AS (or the BM-SC) further provides the synchronization source information of the BM-SC (or the synchronization source information of the GCS AS) for the UE. Therefore, when being in a unicast (multicast) transmission mode, the UE can obtain both of the synchronization source information of the GCS AS and the synchronization source information of the BM-SC.
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公开(公告)号：US20170302403A1
公开(公告)日：2017-10-19
申请号：US15631343
申请日：2017-06-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Longyu Cao , Yong Yu , Zhiming Li
IPC: H04L1/00 , H04L12/18 , H04N21/637 , H04L29/06 , G06F11/07
CPC classification number: H04L1/004 , G06F11/07 , H04L12/18 , H04L12/1868 , H04L65/4076 , H04L2001/0092 , H04N21/637
Abstract: A file repair method includes receiving, by a broadcast/multicast service center, a file repair request message sent by user equipment, where the file repair request message includes a Uniform Resource Identifier (URI) corresponding to file data to be repaired and a transmit session identifier of a File Delivery over Unidirectional Transport FLUTE session that transmits the file data. The method further includes determining, according to the transmit session identifier, the FLUTE session that transmits the file data, and determining repair data of the file data according to the FLUTE session that transmits the file data and further according to the URI corresponding to the file data.
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