568 results about "Mobility management" patented technology

Methods, apparatus, and systems for providing multicast handover are disclosed. In one example aspect, the method includes receiving, by a target radio access node (T-RAN) from a source radio access node (S-RAN) or from an access and mobility management function (AMF), a handover request including a multicast or broadcast context for a handover of a multicast and broadcast service (MBS) to the T-RAN. The method further includes binding a shared tunnel for the MBS and a flow in a unicast protocol data unit (PDU) session in a case that an MBS session identified in the multicast or broadcast context has already been established at the T-RAN, and sending, to an AMF, a message including a handover request acknowledgment or a path switch.

A second base station (BS) receives, from a core network node and in response to sending a path switch request message, a path switch acknowledge message comprising one or more identifiers of one or more partially allowed network slices for a wireless device, wherein the one or more partially allowed network slice are not supported in one or more tracking area (TAs) of a registration area (RA) of the wireless device. The second BS determines, based on a third BS supporting the one or more partially allowed network slices, a handover of the wireless device to the third BS, and sends, to the third BS, a handover request message comprising the one or more identifiers.

The invention discloses a communication method and a communication device, which are used for realizing mobility management of an NTN (Network Temporary Network). The method comprises the steps that first information is received, the first information comprises at least one first configuration and / or multiple second configurations used for NTN bottom layer switching, and target configuration used for NTN bottom layer switching is determined according to the first information. Wherein each terminal device in one group of terminal devices in the first area corresponds to any one first configuration in at least one first configuration, and at least one terminal device in one group of terminal devices in the first area corresponds to at least one second configuration in a plurality of second configurations; the group of terminal equipment comprises one or more terminal equipment; the first area is related to the coverage range of movement of the NTN network equipment; the first terminal device is included in the first group of terminal devices. Therefore, the mobility management of the NTN network can be realized through the configuration of the NTN bottom layer switching of a group of terminal equipment.

A method, performed by a first Session Management Function (SMF), for providing a continuous service to a user equipment (UE) includes: identifying, by the first SMF, triggering of an SMF change operation; transmitting, to an Access and Mobility Management Function (AMF), a message indicating a change in a status of a Packet Data Unit (PDU) session of the UE so as to request a procedure of changing an SMF; receiving a context request message requesting a context of the UE from a second SMF that is a target SMF; and transmitting a context request response message to the second SMF.

A system for cellular network mobility management based on user equipment measurements includes a host device, cellular communication cells, and a back office. The host device, cellular communication cells and back office execute a cellular network mobility management application (CMMA). The CMMA as initiated by the host device, generates control-plane measurement event based handover suggestions, generates quality-of-service (QoS) measurement based handover suggestions. Then the CMMA, via the cellular communication cells, performs cellular network signal strength monitoring and determines that a measurement configuration (MC) threshold has been achieved. Subsequently, the system performs anomaly detection; and selectively alters timing of cellular network handovers between the host device and the one or more cellular communication cells to reduce a potential for repetitive handovers from a first level to a second level less than the first level while maintaining or improving a cellular network QoS.

A session management method performed by a core network according to an embodiment of the present disclosure includes receiving, by using an access and mobility management function (AMF), a packet data unit (PDU) session modification request to which non-3GPP device connection information is applied from a user equipment (UE) or a 5G residential gateway (5G-RG), and determining whether to reject the PDU session modification request by using at least one of a session management function (SMF) or a policy control function (PCF).

A data transmission method, an apparatus, and a system, the method including receiving, by a mobility management network element, second information from a session management network element, where the second information is associated with triggering establishment of a communication connection between a first terminal and a first access network device, and where the communication connection is associated with transmitting data of a first multicast service, and sending, by the mobility management network element, fifth information to the first access network device based on the second information, where sending the fifth information causes the first access network device to establish a communication connection to the first terminal according to the fifth information.

A wireless device sends, to a mobility management entity (MME) of an evolved packet core (EPC), an attach request message. The wireless device receives, from the MME, one or more messages indicating a parameter indicating whether interworking without an interface between the MME and an access and mobility management function (AMF) of a fifth generation (5G) core is supported. The parameter further indicates an acceptance for a packet data network (PDN) connectivity, associated with an unmanned aerial system (UAS) service. The acceptance is based on an authentication and / or authorization (AA) result for the UAS service. The wireless device determines, based on the parameter, to operate in a dual-registration mode. The wireless device registers independently with the EPC and the 5G core in the dual-registration mode. The wireless device sends, while in the dual-registration mode and to the AMF, a registration request message.

This application discloses a communication method and a communication apparatus One example method includes: sending, by a policy control function network element, a trigger to an access and mobility management function network element; obtaining, by the policy control function network element, first information from the access and mobility management function network element; generating, by the policy control function network element, an access and mobility management policy based on the first information; and sending, by the policy control function network element, the access and mobility management policy to an access and mobility management function network element.

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates and satisfying various service requirements. A method performed by a terminal in a communication system is provided. The method includes transmitting, to a network function related to mobility management, a first NAS message including capability information that indicates whether the terminal supports an access technology utilization control; receiving, from the network function, a second NAS message including information on the access technology utilization control, the information on the access technology utilization control indicating restricted access technology associated with a current PLMN; storing the information on the access technology utilization control; and applying the information on the access technology utilization control for a cell selection and a cell reselection in the current PLMN to restrict an access to the restricted access technology.

A method and apparatus for multicast broadcast service. The method implemented at an access and mobility management function (AMF) entity comprises receiving a message for starting a multicast / broadcast (MB) session from a session management function (SMF) entity. The message comprises first location information. The method further comprises sending an MB session joining accept, reject, or cancel message to at least one terminal device based on the first location information.

Provided are a base station and discontinuous reception (DRX) configuration methods of a base station and user equipment (UE). The base station includes a first communication module configured to provide a 5th Generation (5G) communication channel to user equipment (UE) in a specified area, a second communication module configured to communicate with an access and mobility management function (AMF), and a processor functionally connected to the first and second communication modules. When a network slice is selected by the UE connected through the first communication module, the processor acquires DRX configuration information corresponding to the selected network slice from the AMF through the second communication module and transmits a DRX timing in accordance with the DRX configuration information to the UE through the first communication module.

Initiating primary reauthentication of a communication device by a home network (UDM or AUSF) is provided. A trigger to initiate a primary reauthentication request of a communication device is detected. An authentication status of the subscription permanent identifier (SUPI) of the communication device is checked. Responsive to the authentication status of the SUPI being obsolete or null, a reauthentication message is transmitted towards an access and mobility management function (AMF) node. A reauthentication confirmation message is received. A determination is made as to whether to continue, abort, or postpone any steering of roaming (SoR) updates, any user equipment parameter updates (UPU updates) or any authentication and key agreement for applications (AKMA) procedures based on the reauthentication confirmation message.

There is provided an apparatus comprising determining, by a first access and mobility management function in a first network, that handover of a user equipment from the first access and mobility management function to a second access and mobility management function in a second network is required; sending, to the second access and mobility management function, a context update request for the user equipment, wherein the context update request comprises an indication that the source and target access node are the same; and receiving, from the second access and mobility management function, a context update response based on the context update request, the context update response comprising the indication that the source and target access node are the same.

Aspects presented herein may enable a first network entity (e.g., a base station) to request a second network entity (e.g., a location management function (LMF)) to trigger positioning measurements at the first network entity via an access and mobility management function (AMF), an operations, administration, and maintenance (OAM) entity, and / or an external artificial intelligence (AI) or machine learning (ML) (AI / ML) service. In one aspect, a first network entity transmits, to a second network entity, a request for at least one of (1) an initiation of a set of UE positioning related measurements for AI / ML training at the first network entity, or (2) a ground truth label for the AI / ML training at the first network entity. The first network entity receives, based on the request, at least one of: (1) an indication to perform the set of UE positioning related measurements or (2) the ground truth label.

A system is disclosed for providing inter-system mobility in integrated LTE and WiFi systems. A control plane interface, referred to as the S1a-C interface, is defined between a trusted WLAN access network (TWAN) and a mobility management entity (MME) comprised in an LTE wireless access network. A user plane interface, referred to as the S1a-U interface, is defined between the TWAN and a server gateway (SGW) in the LTE wireless access network. The MME operates as a common control plane entity for both LTE and TWAN access, while the SGW operates as a user plane gateway for both LTE and TWAN. The integrated MME and SGW allow for user equipment (UE) to access the capabilities of a packet data network (PDN) through either the LTE access network or TWAN.

A method implemented in a communication network between a compact core system and a central core network system for registration and session management comprises transmitting, by a compact access and mobility management function (AMF) at the compact core system, a registration request to the central core network system, in which the registration request comprises data associated with the compact core system, and completing, by a central AMF at the central core network system, a registration of the compact core system by adding the data associated with the compact core system at a registration data store in the central core network system, and establishing, using a user plane function (UPF) at the compact core system, a connection between the compact AMF and a central AMF at the central core network system over a network slice.

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. The present invention suggests a method for requesting data usage updates from SMF / PCFs in charge of S-NSSAI / DNN when an access and mobility management function (AMF) receives a session creation request for same S-NSSAI / DNN, a method for requesting data usage updates from PCFs in charge of S-NSSAI / DNN when a unified data repository (UDR) receives a query request for same S-NSSAI / DNN, and a method for selecting same PCF for S-NSSAI and DNN.

This disclosure relates to a connection establishment method and apparatus, a computer program product, and an electronic device, belonging to the field of wireless communication technology. The method includes: sending an attach request message to a mobility management entity, wherein the attach request message includes a packet data network connection establishment request; receiving indication information sent by the mobility management entity; and sending a request to the mobility management entity according to the indication information. This disclosure solves the problem of low communication efficiency in related technologies caused by the strong coupling between the attach process and the packet data network connection establishment in terminal devices.

A method can include sending, by a core network device comprising an access and mobility management function (AMF) to a wireless device, a first non-access stratum (NAS) message via a first base station of a first access of the wireless device. The method can also include sending, by the AMF to the wireless device, a second NAS message via a second base station of a second access of the wireless device. The method can further include receiving, by the AMF from the first base station of the first access, first radio resource control (RRC) configuration parameters of the wireless device for the first access. The method can additionally include sending, by the AMF to the second base station of the second access, the first RRC configuration parameters of the wireless device for the first access while maintaining the first access and the second access for the wireless device.

A device establishes a first encrypted tunnel with a first active security gateway at a first data center to enable the device to communicate, via the first encrypted tunnel, with a first access and mobility management function (AMF) at the first data center. The device forwards, via the first encrypted tunnel and the first active security gateway, a first User Equipment device (UE) message to the first AMF. The device determines an occurrence of a failure or overload condition at the first active security gateway, and establishes, based on the determined occurrence of the failure or overload condition, a second encrypted tunnel with a standby security gateway at a second data center to enable the device to communicate, via the second encrypted tunnel, with the first AMF. The device forwards, via the second encrypted tunnel and the standby security gateway, at least one second UE message to the first AMF.

Techniques pertaining to a non-access stratum (NAS) protocol header optimization regarding a transport failure in mobile communications are described. The NAS layer of a user equipment (UE) receives an indication of a transmission failure of a data transport message from a lower layer. In response, the NAS layer performs at least one operation depending on whether the indication is received with or without a tracking area identity (TAI) change and whether a current TAI is or is not in a TAI list. The at least one operation includes one or more of the following: (1) aborting a service request procedure; (2) performing a tracking area updating (TAU) procedure; (3) restarting a data transport procedure; (4) resending the data transport message; (5) aborting the data transport procedure; (6) entering an Evolved Packet System (EPS) Mobility Management (EMM) registered state; and (7) locally releasing a NAS signaling connection and any resource allocated for the data transport procedure.

Provided are an indication information sending method, apparatus and system, a storage medium, and an electronic device, where the indication information sending method includes: sending, by a first access and mobility management function (AMF), first indication information to a first target network element, where the first indication information is used for indicating whether a packet data unit (PDU) session is capable of interworking with a target network system.

The invention provides a method and device for high-precision positioning of a terminal on a network side according to differential information, electronic equipment, a computer readable storage medium and a computer program product. The method for positioning the terminal at the network side with high precision according to the differential information comprises the following steps that: an access and mobility management function unit receives a high-precision positioning request for target user equipment; according to three dimensions of whether to start the broadcast high-precision positioning service in real time, whether to sign the broadcast high-precision positioning service and terminal hardware capability, a corresponding positioning strategy is selected to be executed; executing a corresponding positioning process according to the selected positioning strategy to obtain a high-precision positioning result; and feeding back the high-precision positioning result to the subject initiating the high-precision positioning request. According to the method and the device, the regional service state, the signing condition and the terminal capability are comprehensively considered, the positioning strategy is dynamically adapted, and the adaptability and the success rate of the high-precision positioning service in different scenes are effectively improved.

The invention relates to a public early warning message publishing method and device, electronic equipment and a storage medium, and is applied to a cell broadcast entity (CBE), and the method comprises the steps: distributing a broadcast alarm identifier and a CBE information code to a public early warning message to be published, sending an early warning message delivery request comprising a CBE information code and a broadcast alarm identifier to a cell broadcast center function (CBCF); sending an early warning message delivery request to the CBCF, so that the CBCF generates a message serial number corresponding to the early warning message according to the CBE information code based on the early warning message delivery request, and forwards the early warning message carrying the message serial number and a broadcast alarm identifier to a corresponding base station through an access and mobility management function (AMF), and the base station sends the early warning message to the broadcast alarm identifier based on the message serial number and the broadcast alarm identifier in the received early warning message. After the pre-warning message is subjected to duplicate removal operation, broadcasting of the pre-warning message is completed, and the key distinguishing bit of the message code field in the message serial number directly multiplexes the CBE information code. The public early warning message issuing method and device can improve the public early warning message issuing accuracy.

The present disclosure provides a mobility management method, a communication device, a communication system, and a storage medium. The method comprises: a terminal receiving first configuration information, the first configuration information being used for configuring a computing power capability of at least one candidate cell and / or at least one candidate node; determining a first cell and / or a first node on the basis of a computing power requirement of the terminal and the computing power capability; and performing a mobility operation on the basis of the first cell or the first node. The method of the present disclosure ensures successful execution of a computing power service of the terminal and improves user experience.

A method performed by a mobility management entity (MME) are provided. The method comprises detecting that a monitoring event that a user equipment (UE) is moving from being registered in a store and forward (S&F) mode to not being registered in the S&F mode, and in response to detecting the monitoring event, transmitting, to a service capability server / application server (SCS / AS), a message indicating that the UE is moving from being registered in the S&F mode to not being registered in the S&F mode.

The invention provides an NTN-oriented intelligent mobility management and service continuity guarantee method, which is executed by an intelligent mobility management engine at a network side, and comprises the following steps of: based on real-time position information of user equipment and a network node, predicting a position in a future set time by utilizing a prediction algorithm; a dynamic network relation graph is constructed based on the prediction result; analyzing the dynamic network relation graph by using a graph neural network to obtain a network reconfiguration decision; and based on the network reconfiguration decision, indirectly guiding the network equipment to trigger a switching process meeting the 3GPP standard so as to execute switching and core network element migration. A network reconfiguration decision is obtained by constructing a dynamic network relation graph, and the decision guides a standard 3GPP process to be triggered and executed towards a globally optimal direction in a mode of pre-configuring network resources and optimizing a strategy. Therefore, the purposes of seamless switching, reduced signaling overhead, decision globalization and remarkably enhanced service continuity are achieved.

A communication network device hosting a lawful interception administration function, LI-ADMF, network element, NE. The device comprises includes interface circuitry, a processor and memory having instructions executable by the processor whereby the communication network device is operative to receive, from a law enforcement agency, LEA, a request to receive information related to at least one unmanned aerial system, UAS, hosted communication device registered with a communication network, send a request to at least one of a mobility management device or a user subscription management device to provide the information, receive at least part of the requested information from at least one of the mobility management device or the user subscription management device and send the received information to a law enforcement management function, LEMF.