992 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.

The invention relates to the technical field of network communication, in particular to a 5G-A network slice dynamic adjustment and resource allocation system oriented to low-altitude economy. The system comprises a mobility management feature integration module, a network slice service level protocol evaluation module, a mobility management demand prediction benchmark construction module, a multi-dimensional trend prediction module, a joint optimization decision generation module and a strategy verification and execution module, and is used for acquiring a mobility management feature data set of a wireless network; performing network slice service level protocol evaluation on the wireless network to obtain a network slice state evaluation result; constructing a mobility management demand prediction benchmark; performing multi-dimensional trend analysis on the network slice state evaluation result to obtain a prediction result; performing joint optimization decision on the standard network slice configuration strategy to obtain a network slice adjustment strategy; and executing the verified slice adjustment strategy to realize dynamic adjustment and resource allocation of the network slice. According to the invention, the efficiency of network slice dynamic adjustment and resource allocation can be improved.

The invention discloses a rail transit multi-network integration method based on a digital trunking technology, relates to the technical field of communication, and aims to solve the problem that a traditional narrowband trunking system cannot meet the requirements of voice and data comprehensive bearing and vehicle-ground large-bandwidth service real-time transmission. The method comprises the following steps: constructing a time division duplex long-term evolution broadband digital trunking unified bearing platform; an intermediate media access control layer fusion architecture is deployed, and seamless mobility management of the heterogeneous network is realized through unified authentication and multi-link aggregation; an intelligent vertical switching algorithm based on prediction and multi-criterion decision is introduced, a bidirectional long-short-term memory network model is utilized to predict a network state trend, and an improved entropy weight method and an analytic hierarchy process are combined to dynamically select an optimal access network according to service requirements. According to the invention, the network operation efficiency and the user experience can be obviously improved, and high reliability and high service quality of the rail transit communication system are ensured.

The invention provides a communication method and device, a storage medium and a computer program product, relates to the technical field of communication, and is used for improving the reliability of AKMA service. The method comprises the steps that under the condition that parameters of a terminal are updated, a UDM network element obtains authentication and key management AKMA service data of an application and a parameter updating reason of the terminal; and under the condition that the AKMA service data indicates that the terminal subscribes to the AKMA service and the parameter updating reason of the terminal is route identifier updating, initial registration request information of the terminal is sent to an access and mobility management function AMF network element, and the initial registration request information is used for requesting the terminal to execute initial registration.

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 terminal positioning request method is performed by a network device. The method includes: transmitting a request message to an access and mobility management function (AMF) network element or a location management function (LMF) network element, wherein the request message makes a request to perform at least one of positioning a terminal or obtaining location information of the terminal.

Techniques for packet core network (PCN) gateway selection of collocated gateways are disclosed herein. A mobility management entity (MME) can retrieve charging characteristics (CC) information to determine whether collocated gateway selection is applicable for a UE. When collocated gateways are to be selected, the MME can configure domain name server (DNS) queries in a manner which is adapted for collocated gateway identification. Upon receipt of the DNS query, the DNS can be configured to identify collocated serving gateways (SGWs) which are each collocated with a packet gateway (PGW). The DNS can return identifications of the collocated SGWs to the MME, and the MME can use the identifications of the collocated SGWs to select a collocated SGW and a corresponding collocated PGW for use in connection with the network access for the user equipment.

According to one embodiment of this specification, there is provided an operation method of user equipment (UE). The method may comprise: generating an Evolved Packet System (EPS) Mobility Management (EMM) transport message for an initial non-access stratum (NAS) message; and transmitting the EMM transport message with an integrity protected. If the EMM transport message may include a data container, the EMM transport message may be partially ciphered. The EMM transport message may be transmitted if the UE uses an Evolved Packet System (EPS) service with control plane Cellular Internet of Things (CIoT) EPS optimization with overhead reduction.

The system connects a wireless device to a non-terrestrial communication network from a terrestrial communication network such that a wireless communication service is provided by the non-terrestrial communication network. The system pairs with a secondary device configured to collect data related to a physiological condition of a user of the wireless device. The system collects mobility management event data when the wireless device connects to the non-terrestrial communication network and when the wireless device enters a different tracking area. The system receives data related to the physiological condition of the user of the wireless device. The wireless device transmits the physiological data when the wireless device enters a new tracking area. The system determines a state of emergency based on the mobility management event data and data related to the physiological condition of the user of the wireless device. The system causes the non-terrestrial network to notify an emergency service.

Provided are a communication method, device and system, exemplarily, the method can be applied to a mobility management scenario of a terminal. In the method, under the condition that the first reference position is determined to meet the preset condition, the first reference position is added into the first candidate position set, and the second reference position in the first candidate position set is moved out of the first candidate position set to obtain the second candidate position set, so that the situation that the positioning information of the terminal is jittered and the positioning accuracy of the terminal is improved can be prevented. As a result, the set of the recent N reference positions is frequently changed, so that the terminal can be prevented from frequently reporting the set of the recent N reference positions.

A second base station (BS) receives, 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 relates to the technical field of geophysical exploration, in particular to a pure-data-driven Marchenko multiple suppression method based on SVT nuclear norm constraint, and the method comprises the steps: collecting seismic data, and carrying out the preprocessing of the seismic data, and enabling the seismic data to serve as an actual medium; introducing a reference medium and setting a focus point; inputting the actual medium, the reference medium and the focus point into an MME (Mobility Management Entity) algorithm to start iteration until a preset number of iterations is reached, and obtaining an iteration result; wherein the iteration is divided into an odd number of iterations and an even number of iterations, and the odd number of iterations and the even number of iterations are respectively used for updating the downlink focusing function and the uplink focusing function by introducing an SVT nuclear norm constraint operator; and extracting primary wave data at the focus point at each sampling moment based on the iteration result by using an uplink Green function, traversing all sampling moments, constructing a primary wave data set, and completing suppression. According to the invention, the precision and reliability of seismic data processing can be improved.

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).

Some embodiments provide a method for implementing a software-defined private mobile network (SD-PMN) for an entity. At a physical location of the entity, the method deploys a first set of control plane components for the SD-PMN, the first set of control plane components including a security gateway, a user-plane function (UPF), an AMF (access and mobility management function), and an SMF (session management function). At an SD-WAN (software-defined wide area network) PoP (point of presence) belonging to a provider of the SD-PMN, the method deploys a second set of control plane components for the SD-PMN that includes a subscriber database that stores data associated with users of the SD-PMN. The method uses an SD-WAN edge router located at the physical location of the entity and a SD-WAN gateway located at the SD-WAN PoP to establish a connection from the physical location of the entity to the SD-WAN PoP.

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 method performed by an access and mobility management function (AMF) entity in a wireless communication system is provided. A protocol data unit (PDU) session with respect to a terminal is established via a first network slice. And determining whether the first network slice needs to be replaced. And when replacement is needed, providing information about the second network slice to the terminal. A session management (SM) context update message including information about the second network slice is provided to a session management function (SMF) entity corresponding to the PDU session. An SM context update response message is received from the SMF entity including information about whether the new PDU session is assignable to the second network slice. Based on the SM context update response message, replacement with the second network slice is attempted, replacement with another network slice is performed, or replacement is stopped.

The present disclosure relates to a system (100) and a method for switching user equipment(s) (UEs) between communication networks (4G, 5G, and 6G). The method includes detecting an outage (service failure or interruption in service) in a network based on a reference signal received power (RSRP), a reference signal received quality (RSRQ), and a signal-to-interference-plus-noise ratio (SINR) and switching the UE from a first network to a second network. On detecting the outage, a mobility management entity (MME) queries a home subscriber server (HSS) for the UE usage type. If the user is 4G-only, the MME selects 4G network and if the user is migrated to 4G / 5G combination core, then the MME selects the 5G network. A circle-wise global flag in the HSS return “4G” for the MME query regarding the UE usage type, so the MME selects the 4G core and the user will move to the 4G network.

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.

Aspects of the subject disclosure may include, for example, receiving, from tinyML devices communicating with a mobile communication network, notification information about operational configuration of the tinyML devices, providing the notification information as a first input to a machine learning process, providing information about configuration and status of the mobile communication network as a second input to the machine learning process, receiving, from the machine learning process, mobility management information for the tinyML devices, the mobility management information identifying target cells for the tinyML devices to camp on to upload current information of the tinyML devices before moving out of a coverage area of the mobile communication, and communicating the mobility management information over the mobile communication network to the tinyML devices. Other embodiments are disclosed.

To clarify an efficient control method related to an unavailability period, and UE behavior and network behavior associated with the unavailability period. In a case of updating the unavailability period while a timer using the unavailability period is running, a UE updates the stored unavailability period, stops the timer, and starts the timer by using the updated unavailability period.

The invention provides a sensing task processing method and device, and relates to the technical field of communication, according to the sensing task processing method provided by the embodiment of the invention, a first network element can receive a sensing service request sent by terminal equipment UE through an access and mobility management function AMF, and the sensing service request comprises sensing service information of a sensing task; first sensing capability information of the sensing node is obtained, the first sensing capability information comprises a first sensing capability feature of the sensing node, and the first sensing capability feature is the same as a sensing service feature in the sensing service information in feature type; determining at least one target sensing node in the sensing nodes according to the first sensing capability information; and calling at least one target sensing node to execute the sensing task. The invention provides a method for reporting the sensing capability in the 6G core network, so that the core network can accurately and efficiently select the sensing node to provide the sensing service for the specific sensing task.

An authorization method includes receiving, by a policy control function device of a relay terminal, a request message from an access and mobility management function device of the relay terminal. The request message includes an identifier of a remote terminal and an identifier of the relay terminal. The method also includes determining, by the policy control function device, an authorization result based on the identifier of the remote terminal and the identifier of the relay terminal. The authorization result indicates whether the relay terminal and the remote terminal are authorized to establish a relay service relationship. The method further includes sending, by the policy control function device, the authorization result to the access and mobility management function device.

The present disclosure generally relates to wireless communication systems, and more particularly, to an apparatus and method for measuring energy consumption of user equipment in a wireless communication system. Specifically, a Session Management Function (SMF) receives an SMF event subscription for requesting user data volume(s) and additional information of energy consumption measurement target information of a UE from an Energy Information Function (EIF) or Network Data Analytics Function (NWDAF) through a Service Based Interface (SBI). The SMF extracts a gNB ID from user location information received from an Access and Mobility Management Function (AMF). The SMF transmits to a User Plane Function (UPF) through the SBI via UPF event subscription or through an N4 interface to obtain user data volume(s). After receiving user data volume(s) and additional information from the UPF, the SMF can transmit information for UE energy consumption calculation including these to the EIF or NWDAF.

Provided in the embodiments of the present application are an information transmission method and a communication apparatus, which can ensure that session management can be reliably performed during the switching of a terminal when a session-related function is decoupled from an access and mobility management network element. The method comprises: during the process of switching a service radio access network of a first terminal from a source radio access network to a target radio access network (RAN), the target radio access network acquiring, from the source radio access network, service area information corresponding to the first terminal; the target radio access network determining first indication information on the basis of location information and the service area information of the first terminal, wherein the first indication information is used for indicating whether the first terminal is located in a service area indicated by the service area information; and the target radio access network sending the first indication information to a session management network element, wherein the session management network element is used for managing a session of the first terminal.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present subject matter refers to a method for a user equipment (UE) including a multi-universal subscriber identity module (MUSIM) in a wireless communication system is provided. The method includes registering to a public land mobile network (PLMN) on both of a 3rd generation partnership project (3GPP) access network and a non-3GPP access network, receiving, from an access and mobility management function (AMF), a message while the 3GPP access network is in an idle state, in case that the message is received over the 3GPP access network, identifying the message is related to a voice service and in case that the message is received over the non-3GPP access network, identifying that the message is related to a non-voice service.