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公开(公告)号：EP4075918A1
公开(公告)日：2022-10-19
申请号：EP20911441.2
申请日：2020-01-06
发明人： XU, Shengfeng , YING, Jiangwei , LI, Meng
IPC分类号： H04W88/04
摘要： Embodiments of this application provide a communication method and an apparatus. The method includes: A first message from a relay terminal is received, where the relay terminal is a relay terminal used for communication between the first terminal and a second terminal. The first message includes first indication information, an application layer identifier of the second terminal, and a first address of the second terminal. The first indication information can indicate the first unicast link between the first terminal and the relay terminal. The first terminal updates the first information of the first unicast link based on the first message, to obtain updated second information of the first unicast link. The second information includes the application layer identifier of the second terminal and the first address. In embodiments of this application, links that need to be maintained between the first terminal and the relay terminal can be reduced, and link maintenance overheads are reduced.
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公开(公告)号：EP3879860A1
公开(公告)日：2021-09-15
申请号：EP19887384.6
申请日：2019-11-20
发明人： YING, Jiangwei , LI, Meng , XIAO, Xiao
IPC分类号： H04W4/40
摘要： Embodiments of this application relate to the field of communications technologies, and disclose a V2X message transmission method, a device, and a system, to resolve a problem caused by an application layer of a terminal autonomously selecting a communications interface for transmitting a V2X message. The method includes: A terminal obtains a service identifier of a first V2X message; the terminal determines a communications interface of the first V2X message based on the service identifier of the first V2X message and a correspondence relationship between a service identifier of a V2X message and at least one communications interface; and the terminal sends the first V2X message through the communications interface of the first V2X message.
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公开(公告)号：EP3873121A1
公开(公告)日：2021-09-01
申请号：EP21153369.0
申请日：2017-03-27
发明人： NI, Hui , LI, Yongcui , YING, Jiangwei
IPC分类号： H04W12/033 , H04L29/06 , H04L29/08
摘要： Embodiments of the present invention relate to a data transmission method, user equipment, and a control plane node. User equipment UE determines a security attribute of a session of the UE; the UE sends a session establishment request message to a control plane node when the security attribute of the session of the UE does not meet a security requirement of an application, where the session establishment request message is used to request to establish a session corresponding to the security requirement of the application. To be specific, the UE determines, based on the security requirement of the application, whether the session of the UE corresponds to the security requirement of the application. When the security attribute of the UE does not meet the security requirement of the application, a session establishment process is triggered to establish a session corresponding to the security requirement, to reduce an unnecessary signaling exchange caused by establishment of a new session in a data transmission process, thereby meeting requirements of different services.
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4.发明公开
公开(公告)号：EP3849219A1
公开(公告)日：2021-07-14
申请号：EP19867972.2
申请日：2019-09-12
发明人： LI, Meng , YANG, Yanmei , YING, Jiangwei
IPC分类号： H04W4/06
摘要： This application provides a multicast/broadcast service transmission method, a core network element, and a terminal device. The method includes: A first core network element obtains a multicast/broadcast access type supported by a terminal device that is located in a first service area of a multicast/broadcast service and that belongs to a group corresponding to the multicast/broadcast service. The first core network element determines a multicast/broadcast transmission type of the multicast/broadcast service in the first service area based on the multicast/broadcast access type supported by the terminal device. The first core network element notifies an access network element corresponding to the multicast/broadcast service to use the multicast/broadcast transmission type to transmit data of the multicast/broadcast service. According to the method in this application, the first core network element may determine a specific RAT based on which multicast/broadcast transmission is performed, to better adapt to a case in which a terminal device supports a plurality of RATs in a 5G mobile communications system, and improve multicast/broadcast transmission efficiency.
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公开(公告)号：EP3771243A1
公开(公告)日：2021-01-27
申请号：EP20177134.2
申请日：2017-05-11
发明人： LIN, Bo , YING, Jiangwei
摘要： A communication security processing method is applied to processing of AS security when a terminal is handed over from a source cell to a target cell, and includes: obtaining a derivation parameter; deriving a target AS root key based on a source AS root key and the derivation parameter; and calculating, based on the target AS root key, an AS security key used in the target cell. The source AS root key is an AS root key used in the source cell, the target AS root key is an AS root key used in the target cell, the derivation parameter is used to derive an AS root key and corresponds to a RAN node at which or a RAN node group or an area in which the target cell is located, and cells at a same RAN node or in a same RAN node group or area have a same derivation parameter. In this way, the terminal does not need to update the AS security key when being handed over at a same RAN node or in a same RAN node group or area, thereby reducing overheads of updating the AS security key.
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公开(公告)号：EP3661315A1
公开(公告)日：2020-06-03
申请号：EP18845793.1
申请日：2018-05-24
发明人： YING, Jiangwei , YANG, Yanmei , DENG, Qiang , HUANG, Zhenglei
IPC分类号： H04W76/00
摘要： This application discloses a communication method, an apparatus, and a system, and relates to the communications field, to help a terminal device in an RRC-inactive state perform a mobility-triggered TAU. The method includes: when a TAI of a location of a terminal device in a radio resource control RRC-inactive state does not belong to a tracking area list TAL of the terminal device, switching, by the terminal device, to a connection management CM idle state; sending, by the terminal device, a registration request message to an access and mobility management function AMF by using a target radio access network RAN node, where the registration request message is used to request to allocate a TAL to the terminal device; and receiving, by the terminal device by using the target RAN node, a registration accept message sent by the AMF, where the registration accept message includes the allocated TAL. Embodiments of this application are applied to a scenario in which the terminal device moves between registration areas.
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公开(公告)号：EP3589062A1
公开(公告)日：2020-01-01
申请号：EP17901603.5
申请日：2017-03-21
发明人： YING, Jiangwei , YANG, Yanmei , HUANG, Zhenglei , NI, Hui
IPC分类号： H04W74/08
摘要： A communication method and a communications apparatus are provided. The method includes: obtaining, by a session management function entity, parameter information; determining, by the session management function entity, an access technology type for a protocol data unit PDU session of a terminal device based on the parameter information; and sending, by the session management function entity, indication information to an access and mobility management function entity, where the indication information is used to indicate the access technology type of the PDU session.
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公开(公告)号：EP3490280A1
公开(公告)日：2019-05-29
申请号：EP16913746.0
申请日：2016-08-23
发明人： YING, Jiangwei , YANG, Yanmei , HUANG, Zhenglei
IPC分类号： H04W8/22
摘要： Embodiments of the present invention provide a session management method and an apparatus. The method includes: receiving, by a first session management SM entity, first session context information from a second SM entity; further, generating, by the first SM entity, second session context information based on the first session context information; and sending the second session context information to a terminal. As can be learned, a session in a tracking area update procedure of the terminal is updated in a scenario in which an MM entity and an SM entity are separated.
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公开(公告)号：EP3468253A1
公开(公告)日：2019-04-10
申请号：EP16906856.6
申请日：2016-07-14
发明人： YING, Jiangwei , YANG, Yanmei , HUANG, Zhenglei
摘要： This application provides a handover method, including: determining, by a mobility management network element, to hand over a session management SM for user equipment UE, and selecting target session management SM network element; and triggering, by the mobility management network element, a process of setting up a channel by the target SM network element, where the channel includes a user plane data channel between a target user plane function entity and a target base station. Therefore, it is possible to hand over a network in which a CP is separated from a UP and an MM and an SM in the CP are separated from each other.
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10.发明公开
公开(公告)号：EP3468241A1
公开(公告)日：2019-04-10
申请号：EP16906986.1
申请日：2016-09-19
发明人： YING, Jiangwei , YANG, Yanmei , HUANG, Zhenglei
摘要： Embodiments of the present invention provide a security negotiation method, a security function entity, a core network element, and user equipment. The method includes: receiving, by a security function entity, an authentication request sent by a core network element, where the authentication request is generated by the core network element based on a request message of user equipment UE; performing, by the security function entity, Authentication and Key Agreement with the UE based on the authentication request, and generating a security parameter, where the security parameter includes a first key; receiving, by the security function entity, a key request sent by the core network element; and generating, by the security function entity, a security key between the core network element and the UE based on the key request and the first key. In the method, NAS security for a 5G network architecture can be negotiated, thereby meeting a security requirement of a 5G network.
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