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公开(公告)号：US20250063073A1
公开(公告)日：2025-02-20
申请号：US18725890
申请日：2023-01-04
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Yingjiao He , Jesus Angel de Gregorio Rodriguez , Emiliano Merino Vazquez , Jinyin Zhu , Fuencisla Garcia Azorero
IPC: H04L65/1073 , H04L65/1045 , H04W48/16
Abstract: Embodiments of the present disclosure provide method and apparatus for P-CSCF restoration and P-CSCF information registration. A method performed by a session management node comprises receiving a message from a data management node or a policy control node or a first access and mobility node. The message may indicate proxy call session control function (P-CSCF) restoration and information of a failed P-CSCF. The method may further comprise receiving a profile of the failed P-CSCF from a network repository function (NRF). The profile of the failed P-CSCF may comprise address information of Mw interface of the failed P-CSCF and address information of Gm interface of the failed P-CSCF. The method further comprises deriving address information of Gm interface of the failed P-CSCF based on the information of the failed P-CSCF and the profile of the failed P-CSCF.
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公开(公告)号：US20240259276A1
公开(公告)日：2024-08-01
申请号：US18631163
申请日：2024-04-10
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Yingjiao He , Xin Yu Zhang , Wu Wang , Jinyin Zhu , Deqin Zhan , Yunjie Lu
IPC: H04L41/342 , H04L43/08 , H04L43/20 , H04W24/08
CPC classification number: H04L41/342 , H04L43/08 , H04L43/20 , H04W24/08
Abstract: A method for subscribing to notification of a change of a network function may comprise: transmitting a subscription message to a monitoring network function; and receiving a notification from the monitoring network function to notify a change from the network function whose status is required to be monitored. The subscription message indicates a type of the network function, and further indicates an attribute of the network function. The attribute comprises a serving scope indicating one or more target served area of the network function whose status is required to be monitored. According to embodiments of the present disclosure, a simple and fast implementation for subscribing notification of change of network function may be achieved. Particularly, both the response time and the accuracy of the notification about a change of a subscribed network function may be improved.
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公开(公告)号：US20240237112A1
公开(公告)日：2024-07-11
申请号：US18413208
申请日：2024-01-16
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Jinyin Zhu , Yingjiao He , Kai Zhang , Yong Yang
IPC: H04W76/18 , H04L43/065 , H04L43/0823 , H04W76/19 , H04W88/14
CPC classification number: H04W76/18 , H04L43/065 , H04L43/0823 , H04W76/19 , H04W88/14
Abstract: Embodiments of the present disclosure provide methods and apparatus for user plane path failure and recovery handling. A method comprises detecting that a user plane path is failed; and monitoring the user plane path within a configurable period to determine whether the user plane path is recovered or not.
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公开(公告)号：US11985045B2
公开(公告)日：2024-05-14
申请号：US17915154
申请日：2021-03-17
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Yingjiao He , Xinyu Zhang , Wu Wang , Jinyin Zhu , Deqin Zhan , Yunjie Lu
IPC: H04L43/0864 , H04L41/342 , H04L43/08 , H04L43/20 , H04L67/306 , H04W24/08
CPC classification number: H04L41/342 , H04L43/08 , H04L43/20 , H04W24/08
Abstract: Embodiments of the present disclosure provides a method and an apparatus for subscribing a notification of a change of a network function. A method for subscribing to notification of a change of a network function may comprise: transmitting (S101) a subscription message to a monitoring network function; and receiving (S102) a notification from the monitoring network function to notify a change from the network function whose status is required to be monitored. The subscription message indicates of the network function. The attribute comprises a serving scope indicating one or more target served area of the network function whose status is required to be monitored. According to embodiments of the present disclosure, a simple and fast implementation for subscribing notification of change of network function may be achieved. Particularly, both the response time and the accuracy of the notification about a change of a subscribed network function may be improved.
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公开(公告)号：US12231393B2
公开(公告)日：2025-02-18
申请号：US17927201
申请日：2021-05-20
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Yingjiao He , Yunjie Lu , Yong Yang , Wen Zhang
IPC: H04L45/74 , H04L61/5007 , H04L61/5061
Abstract: There is provided a method performed by a user plane core network function for a wireless communication network. The user plane core network function is configured with a range of Internet Protocol addresses for allocation to user equipments. The method comprises: transmitting a message to a control plane core network function, the message comprising an indication of a usage level of the range of IP addresses.
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公开(公告)号：US20240146812A1
公开(公告)日：2024-05-02
申请号：US18262944
申请日：2022-01-21
Applicant: Telefonaktiebolaget LM Ericsson (PUBL)
Inventor： Zhansheng Wei , Yingjiao He , Wu Wang , Wenjun Liu , Yunjie Lu , Huaicheng Dai
Abstract: Various embodiments of the present disclosure provide methods and apparatuses for session service management. A method performed by a first session management function comprises determining first N4 information related to a user plane function (UPF). The first N4 information comprises an identifier of the UPF. The method further comprises sending a first message comprising the first N4 information to a second session management function.
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公开(公告)号：US20230021904A1
公开(公告)日：2023-01-26
申请号：US17786299
申请日：2019-12-19
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Yingjiao He , Anders P. Larsson , Zhansheng Wei , Robert Törnkvist
IPC: H04L67/143 , H04L41/0677
Abstract: Protocol Data Unit (PDU) sessions in a communication network (10) provide logical interconnections between Data Networks (DNs) (16) and respective User Equipments (UEs) (12) that access the DNs (16) via the communication network (10), and the communication network (10) establishes one or more affiliated sessions in conjunction with each PDU session, such as an affiliated charging or policy control session. Rather than requiring the high signaling overhead associated with mass terminations of these affiliated sessions on a per session basis, the Network Functions (NFs) (32, 34, 36) contemplated herein provide for batch termination of a potentially large plurality affiliated sessions, based on the exchange of a corresponding batch termination message. Disclosed batch termination techniques include the exchange of information during session establishment, for later determination of which affiliated sessions are subject to batch termination.
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公开(公告)号：US10149346B2
公开(公告)日：2018-12-04
申请号：US15512162
申请日：2014-10-31
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Yingjiao He , Juying Gan , Chengqiong Xie
Abstract: A method and apparatus for establishing a Voice over LTE (Long Term Evolution) (VoLTE) call in a communication network are provided. After a request for establishing a VoLTE call is received, a user equipment (UE) involved in the VoLTE call that is in LTE coverage can be identified. One or more dummy messages are send to the identified UE after the VoLTE call enters into ringing phase. An interval between successive dummy messages is shorter than a first time period set for determining whether to release radio resource for supporting the VoLTE call in LTE coverage. Sending the dummy message can be stopped if the VoLTE call is answered or is cancelled. As a consequence, time spending on establishing a VoLTE call is shortened and good performance characteristics is achieved, and signallings on networks are reduced.
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公开(公告)号：US12143452B2
公开(公告)日：2024-11-12
申请号：US17786299
申请日：2019-12-19
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Yingjiao He , Anders P. Larsson , Zhansheng Wei , Robert Törnkvist
IPC: H04L67/143 , H04L41/0677 , H04W92/24
Abstract: Protocol Data Unit (PDU) sessions in a communication network (10) provide logical interconnections between Data Networks (DNs) (16) and respective User Equipments (UEs) (12) that access the DNs (16) via the communication network (10), and the communication network (10) establishes one or more affiliated sessions in conjunction with each PDU session, such as an affiliated charging or policy control session. Rather than requiring the high signaling overhead associated with mass terminations of these affiliated sessions on a per session basis, the Network Functions (NFs) (32, 34, 36) contemplated herein provide for batch termination of a potentially large plurality affiliated sessions, based on the exchange of a corresponding batch termination message. Disclosed batch termination techniques include the exchange of information during session establishment, for later determination of which affiliated sessions are subject to batch termination.
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公开(公告)号：US20230412506A1
公开(公告)日：2023-12-21
申请号：US18034796
申请日：2021-09-27
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Wen Zhang , Yong Yang , Yingjiao He
IPC: H04L45/748 , H04L45/42
CPC classification number: H04L45/748 , H04L45/42
Abstract: Embodiments of the present disclosure provide methods and apparatuses for assigning network address prefix. A method performed by a control plane function may comprise: receiving, from a terminal device, a request for assigning a network address prefix; determining whether the network address prefix is assigned by the control plane function or a user plane function; transmitting, to the user plane function, a PFCP Session Modification Request for requesting the user plane function to assign the network address prefix, if it is determined that the network address prefix is assigned by the user plane function; receiving, from the user plane function, a PFCP Session Modification Response including an assigned network address prefix; and transmitting the assigned network address prefix to the terminal device. The specific procedure for the terminal device to obtain the network address prefix from a network entity not directly requested by the terminal device may be defined.
