78 results about "Roaming" patented technology

The invention relates to the technical field of computers, and discloses a visual operation and maintenance supervision platform based on a digital twinning technology, and the platform comprises a data preprocessing module which is used for preprocessing a multi-source heterogeneous monitoring data flow; the data fusion module is used for constructing an equipment topological relation graph, extracting an initial feature vector set of equipment nodes and carrying out space-time fusion; the digital twin modeling module is used for performing parametric modeling and semantic annotation; the real-time synchronization module is used for extracting a model updating instruction set and carrying out asynchronous message transmission and parallel updating; the anomaly detection module is used for training an anomaly detection model and analyzing anomaly types and anomaly reasons; the root cause tracing module is used for constructing an associated sub-graph of abnormal equipment, predicting a root cause candidate equipment list and carrying out hybrid reasoning and evidence fusion; the visual presentation module is used for visualizing a fault influence range, dynamically displaying network traffic and performing multi-view roaming and information drilling; according to the invention, the fault positioning efficiency and the operation and maintenance management level are improved.

A user equipment may be associated with a guaranteed quality-of-service with respect to a home network. The user equipment may request connection establishment with a terrestrial radio network node corresponding to the home network. The home terrestrial node may configure the user requirement with a roaming priority level, a user equipment priority class corresponding thereto, or an identifier associated with a non-terrestrial radio network node corresponding to a network other than the home network. The home terrestrial node may configure the non-terrestrial node with the user equipment priority class. Upon roaming into signal coverage corresponding to the non-terrestrial node, the user equipment may establish a connection therewith, based on the priority class, that facilitates communicating according to the guaranteed quality-of-service. If connection establishment with the non-terrestrial node fails, the user equipment may establish connection with a roaming terrestrial node based on a roaming priority level indication broadcast thereby.

The invention relates to the technical field of human-computer interaction, discloses a method and a device for realizing writing roaming and zooming on a Qt platform, and aims to solve the problems of poor writing continuity and poor zooming visual consistency of existing intelligent equipment during finger writing. According to the scheme, the method mainly comprises the steps that unified overall scaling of all graphic items is achieved by operating viewport transformation of QGraphics View; meanwhile, based on the coordinate increment of multi-finger sliding, setSceneRect is dynamically called to expand the QGraphicsScene boundary, and a centerOn method is utilized to synchronously adjust the viewport center, so that continuous and smooth roaming of the viewport following the fingers is realized. Overall zooming and intelligent roaming are coordinated to jointly construct a virtual writing interface which can be extended infinitely and is synchronous in zooming, so that the writing continuity of finger writing and zooming visual consistency are improved, and the method is particularly suitable for application scenes such as large-screen teaching and digital signature.

The invention relates to the field of computer graphics and real-time rendering, and discloses a naked eye VR visual angle continuous roaming real-time tracking system, which comprises a multi-source viewpoint acquisition unit, a rendering feedback prediction unit connected with a depth buffer area and a template buffer area, and a viewport consistency arbitration unit. According to the method, motion vectors are purified according to object attributes of a template buffer area, a viewpoint is reversely deduced by means of data hierarchical solution of a depth buffer area, and a viewport consistency arbitration unit compulsively uses the reversely deduced viewpoint to take over rendering when the deviation of external sensing data exceeds a limit. The image visual residual inertia is used for filling the blank of external sensor data, and rendering collapse caused by sensor signal interruption or asynchronization is avoided.

The invention discloses a virtual reality roaming method and system based on a multi-view panoramic image model, and belongs to the technical field of computer vision and virtual reality. Through a multi-viewpoint panoramic image set, real-time generation of a high-quality panoramic image from a known viewpoint to any unknown viewpoint is realized based on a spherical projection viewpoint transformation algorithm. Modeling generation methods for a road scene and a region scene are respectively designed according to scene feature differences, so that scene representation with complete coverage is constructed. According to the system, adjacent viewpoints are quickly positioned through a spatial index mechanism, geometric mapping and multi-viewpoint weighted fusion are performed by using the spherical projection algorithm, and a smooth and continuous free viewpoint roaming picture is rendered in a virtual reality environment. According to the method, on the premise of ensuring high fidelity of the scene, real-time rendering is realized on common consumption-level hardware, and the coherence and the degree of freedom of immersive interactive experience are improved.

Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to generate Seamless Mobility Domain (SMD) capabilities information of an SMD and a transceiver configured to transmit the SMD capabilities information to a second wireless device for wireless roaming within the SMD.

The invention discloses a cloud rendering method and system for space computing and terminal equipment, and belongs to the technical field of cloud computing and virtual / augmented reality. The method aims at solving the technical problems that an existing space computing device cannot run severe applications due to limitation of local computing power, power consumption and heat dissipation, and application ecology is separated from a traditional two-dimensional desktop. The method comprises the following steps: operating an operating system environment capable of bearing two-dimensional and three-dimensional applications on a cloud server, performing real-time synthesis and rendering on the output of each application in a three-dimensional virtual space, and updating a scene according to user interaction data received from terminal equipment, and the generated three-dimensional scene is transmitted to terminal equipment in a streaming manner by adopting an optimized coding technology. The method has the beneficial effects that a core computing task is arranged at the cloud end, so that a user can obtain top-level workstation performance through light-weight terminal equipment, various professional applications can be seamlessly operated, persistence and cross-equipment roaming of a working space are realized, and the productivity value of space computing is greatly improved.

This application provides a roaming method, apparatus, and device. The method includes: a first access point receiving a first frame sent by a station, the first frame being used to request the first access point to provide roaming-related information of a plurality of candidate access points or roaming-related information of a target access point, wherein the first frame includes first indication information and / or second indication information, the first indication information being used to indicate whether it is necessary to collect roaming-related information of access points in a listening state, and the second indication information being used to indicate whether it is necessary for the first access point to switch from a listening state to a wake-up state; the first access point sending a second frame to the station, the second frame including roaming-related information of a plurality of candidate access points, or the second frame including roaming-related information of a target access point, the target access point being selected from a plurality of candidate access points.

A controller-based roaming method includes determining, by a station, whether to block an access point; sending, by the station, a block report of the access point to a wireless access controller; maintaining, by the wireless access controller, a block list according to the received block report; and performing, by the wireless access controller, roaming control for the station according to the block list and signal statuses reported by a plurality of access points.

This disclosure provides methods, components, devices and systems for authentication techniques for seamless roaming. Some aspects relate more specifically to techniques for a non-access point (AP) device to prepare the second security key and transition the non-AP device to a target AP multi-link device (MLD) via communications with the serving AP MLD, with the target AP MLD, or both. In some aspects, the target AP MLD may perform validation based on information from the non-AP device or based on communicating with a previous serving AP MLD. In some aspects, a network may initiate roaming by indicating for the non-AP device to roam from a serving AP MLD to one or more target AP MLDs. The non-AP device may identify a timer associated with performing the roaming, and may accept or reject the request to perform the roaming within a duration of the timer.

Due to the line-of-sight nature of optical wireless communication and the limited field of view of optical receivers, the coverage of an access point (120) and the overlapping coverage area of neighboring access points (120) in an optical system are smaller compared to RF systems. Supporting secure roaming of an endpoint (110) in an optical multi-cell wireless communication network (100) becomes more challenging. To address this problem, a subsystem is disclosed that selects a candidate access point for an endpoint (110) from a plurality of access points (120) based on one or more neighbor relations and informs the endpoint (110) about the candidate access point to trigger the endpoint (110) to start a process to pre-establish a new pairwise transient key between the endpoint (110) and the candidate access point (120) for a secure handover.

1. Name of the product in this design: Graphical User Interface for Intelligent Management Platform for Engineering Construction of Electronic Equipment. 2. Purpose of this design: For use in an electronic device to achieve large-screen display and human-computer interaction. 3. The key design features of this product are its graphical user interface. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Design 1 is designated as the basic design. 6. Purpose of the graphical user interface: to display the overall situation of the construction site on a large screen, realize the animation display of key construction progress nodes, and monitor the construction site video and environment. 7. Description of the changing states of the graphical user interface: Design 1's main view is the homepage interface of the intelligent management platform for engineering construction. Clicking the "Project Progress" button in Design 1's main view switches to the changing state diagram of Design 1's interface, enabling multi-angle roaming of the engineering construction scene and animated display of key engineering nodes; Design 2's main view is the homepage interface of the intelligent management platform for engineering construction. Clicking the "Intelligent Monitoring" button in Design 2's main view switches to the changing state diagram of Design 2's interface, enabling retrieval of on-site video monitoring of the engineering construction site, dynamic display of environmental monitoring information at the construction site, and real-time viewing of equipment online status data. 8. Other situations requiring explanation: In the interface, X indicates replaceable content.

One aspect can provide a system and method for fast Wi-Fi roaming. The system can identify forwarding data associated with a first active session of a first application running on a client device coupled to a home access point (AP), determine a number of neighboring APs comprising a target AP, maintain a roaming cache on each of the neighboring APs, and synchronize the identified forwarding data associated with the first active session to the roaming cache on each neighboring AP. In response to determining that the client device is roaming to the target AP, the system can access the roaming cache on the target AP to obtain the forwarding data associated with the first active session in order to continue the first active session on the client device with reduced roaming latency, thereby facilitating fast roaming of the client device from the home AP to the target AP.

The invention relates to a wireless device with random number management and dynamic Dielmann-Hellman key exchange. The wireless device supports roaming to a second access point in the event of a signal strength falling below a threshold or a connection disruption. The wireless device generates random values for encrypting and / or preventing replay attacks. The random values are generated according to rules designed to minimize random number reuse after roaming within the mobile domain. The wireless device may also be configured to generate an encryption key with a device of the mobile domain prior to establishing a connection. After roaming, the encryption key is used to encrypt an earliest data frame transmitted after the roaming.

The invention relates to a Wi-Fi adaptive roaming method and system based on a virtual STA, and the method and system achieve the pre-verification of the connectivity and performance of a candidate AP through introducing the virtual STA before actual switching, guarantees the accuracy of a roaming decision, and avoids the invalid switching of an AP with poor service quality. Meanwhile, a roaming case which is pre-verified and successfully switched is used as an effective sample for closed-loop optimization of a roaming triggering threshold, so that the threshold can accurately adapt to the change of the current network environment, and finally, stable and continuous network connection is provided for the mobile equipment in a complex environment while the switching success rate is improved and the ping-pong effect is reduced.

The disclosure describes systems and methods for improving quality of experience of low latency applications while roaming in a wireless network. One or more switches can be coupled to a network to communicate with a plurality of access points. Each access point can be associated with a plurality of client devices. A switch can receive feedback messages from each access point connected to a corresponding port of the switch. The feedback messages can include telemetry information on each client device connected to each access point. A controller can determine, based at least on the telemetry information, whether to initiate roaming of the client device from one access point connected to one switch to another access point connected to a different switch. The controller can initiate a transfer of connection of client device from one access point to another access point in response to initiating roaming of the client device.

The embodiment of the invention provides a wireless roaming switching method, a computer readable storage medium and an electronic device, the method is applied to an access point, and the method comprises the following steps: obtaining a first signal intensity value of a terminal, the access point being a current access point of the terminal; and according to the first signal strength value and a preset roaming threshold corresponding to the terminal, determining whether to allow the terminal to perform wireless roaming switching, the preset roaming threshold including a preset detection threshold and a preset switching threshold. Therefore, through the embodiment of the invention, the problems that the traditional wireless roaming switching process is long, the WiFi connection time is increased and a large amount of packets are lost can be solved, and the effect of improving the wireless roaming switching efficiency is further achieved.

The application provides a network configuration method, device, server, storage medium and program product. The method comprises: in response to a network connection request of a target terminal, determining a target network corresponding to the network connection request, obtaining a public frequency list of the target network, and network parameters and function types supported by the target terminal; processing the public frequency list according to the network parameters and the function types to obtain a target frequency list, and sending the target frequency list to the target terminal; and configuring a mobile communication strategy corresponding to the target terminal according to the function types. The method of the application configures a corresponding target frequency list and mobile communication strategy according to network parameters and function types supported by different international roaming user terminals, so that the international roaming user terminal can camp on a frequency point in the target frequency list based on the mobile communication strategy, thereby realizing data service based on the target network.

This disclosure is directed to methods and system for intelligent roaming of user equipment (“UE”) of a home network onto a visited network. The methods and systems monitor performance of voice and data services for UEs in coverage areas of edge cell sites of the home network. The methods and systems determine which UEs in the coverage areas of the edge cell sites to roam on the visited network based on decreases in voice and data services. The UEs in the coverage areas selected for roaming are pushed to roam on the visited network by sending a signal that instructs selected UEs to switch into roaming mode while the UEs are still in the coverage areas of the edge cell sites.

In one embodiment, a method for achieving zero packet loss in wireless roaming is implemented by a processor of a wireless client device in a system. The wireless client device establishes a first data plane in association with a first radio connected to a first access point and a second data plane in association with a second radio. The first data plane is different from and operates concurrently with the second data plane. The wireless client device determines a second access point by scanning a plurality of operating channels using the second radio. The wireless client device synchronizes the second data plane with a network controller to connect the second radio with the second data plane to the second access point. The wireless client device switches traffic of the first data plane connected to the first access point to the second data plane connected to the second access point.

Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to identify a target access point (AP) multi-link device (MLD) and a wireless transceiver configured to establish links with the target AP MLD directly for wireless roaming of the wireless device from a current serving AP MLD to the target AP MLD.

A method of authorizing an IMS call in a foreign country for a wireless communication device that has a wireless communication subscription service with a US wireless communication service provider. The method comprises receiving a request to originate an IMS call by a HSS located in the US, wherein the request is received from a first wireless communication device located outside of the US and the request identifies a first country; determining by the HSS that international IMS roaming service is allowed by the wireless communication service provider in the first country; determining by the HSS that a first wireless communication subscription service associated with the first wireless communication device allows international IMS roaming service; and sending an authorization to originate the IMS call by the HSS to the first wireless communication device, whereby the first wireless communication device is enabled to originate the IMS call in the first country.

Methods, apparatuses, and computer readable media for enhanced roaming, where an non-access point (AP) (non-AP) of a multi-link device (MLD) is configured to: encode, an ultra-high reliability (UHR) link reconfiguration request frame, for transmission to a current AP MLD, the UHR link reconfiguration request frame comprising a type field, the type field indicating seamless mobility domain basic service set transition (ST) preparation, and decode, an UHR link reconfiguration response frame, from the current AP MLD, the UHR link reconfiguration response frame comprising a type field and a seamless mobility domain (SMD) basic service set (BSS) Transition Parameters element, the type field indicating ST preparation, and the SMD BSS transition parameters element comprising a status code field, the status code field indicating success.

Provided in the present application are a communication method and apparatus. The method comprises: a first access-point multi-link device determining that a station multi-link device has roamed from the first access-point multi-link device to a second access-point multi-link device, and storing first context information of the station multi-link device for a first duration. When determining that a station multi-link device completes roaming, a first access-point multi-link device stores, for a first duration, context information related to the station multi-link device, rather than immediately deleting the context information once the station multi-link device completes the roaming. Therefore, the additional overheads caused by repeated roaming of the station multi-link device can be effectively reduced, for example, the additional overheads caused by repeated context transfer or context re-negotiation in a roaming scenario can be reduced.

The invention provides a system and technology for forming an IoT network through zero configuration of heterogeneous network terminals, the system comprises intelligent terminals of various network types, access equipment, a cloud platform, an IoT network, an IoT alliance and other main bodies, a user is supported to create the IoT network on the cloud platform, and the intelligent terminals of various network types are supported to join the IoT network in a zero configuration manner. And the intelligent terminal is supported to conveniently exit from the IoT network, zero-configuration cross-network roaming of the intelligent terminal is supported, and zero-configuration switching of the IoT network of the intelligent terminal is supported. By using the system and the technology, the workload cost of forming the IoT network by the intelligent terminals of different heterogeneous network types is close to zero, the cost of switching the intelligent terminals among different network environments is close to zero, and the workload cost of migrating the intelligent terminals among different IoT networks is close to zero.

: Where STAs having TWT agreements and commitments of QoS need to roam, the roaming may cause a need for renegotiation of the TWT agreements which in turn may cause problems for the QoS requirements. Thus, there is provided a method to reduce problems by comprising receiving, by a first access point (AP) from a station (STA), a first frame inquiring whether a second AP accepts the STA joining a target wake time (TWT) schedule of the second AP if or after the STA roams to the second AP; and transmitting, by the first AP to the STA, a second frame in response to the first frame. There may also be receiving, by a first access point (AP) from a station (STA), a first frame indicating roaming by the STA from the first AP, transmitting, by the first AP to the STA, a third frame indicating a second AP for the roaming by the STA from the first AP, transmitting, by the first AP to the STA, a fourth frame indicating a target wake time (TWT) schedule of the second and the a second frame indicates acceptance or rejection of the inquiry from the STA to join the TWT schedule of the second AP if or after the STA roams to the second AP.

A network device via which wireless clients can connect to a wireless network selectively captures PDUs detected on an instrumented interface(s) to capture those of one or more types / subtypes “of interest.” PDU types / subtypes that network device interface(s) has been instrumented to treat as “of interest” include those that are indicative of Wi-Fi roaming of a wireless client. The network device also calculates estimated throughput of the wireless network corresponding to the network device based on network statistics that it determines at fixed time increments and records throughput values in a pre-allocated buffer. When the network device detects a PDU(s) designated for capturing, it reads throughput values recorded in the buffer and writes these throughput values to the PDU capture file in addition to the captured PDU(s). Network support professionals can evaluate the throughput values reported in an uploaded PDU capture file to diagnose network issues attributable to roaming.

This invention relates to the field of image communication technology, specifically disclosing a multi-screen splicing advertising control system and method that supports material roaming and overlay. The system includes a virtual canvas generation module, an instruction decoding module, a coordinate mapping analysis module, a collaborative instruction encoding module, an adaptive rendering and distribution module, and a boundary collaborative control module. Based on the physical screen, a virtual splicing canvas is determined; the roaming and overlay instructions of the target advertising material are decoded to obtain a virtual coordinate sequence and overlay attributes; the virtual coordinate sequence and overlay attributes are mapped and analyzed, and the obtained physical screen identifier, local physical coordinates, and display layer are collaboratively encoded to obtain control instructions; the control instructions are adaptively parsed and rendered to achieve smooth layer display; and the physical screen is displayed collaboratively controlled according to the roaming state of the target advertising material. This invention can improve the control efficiency of multi-screen splicing advertisements that support material roaming and overlay.

A wireless power delivery system includes, in part, a roaming and articulating wireless power transfer device. The roaming and articulating wireless power device includes, in part, a wireless power generation unit, an energy storage unit, a controller, and an electrically driven moving platform. The device further includes, in part, at least one RF transmitter or an array of RF transmitters adapted to radiate RF signals at the same frequency. The controller is adapted to control the phase of each RF transmitter independently. The array of RF transmitters may be foldable and expandable. The moving platform may include an inertia measurement, a GPS, bump sensors and proximity sensors. The device may further include a camera, and a wireless communication link via which the device establishes a two-way communication with a recovery unit being wirelessly powered.

The invention provides a communication method and device. The method comprises the steps that a first access point multi-link device determines that a site multi-link device roams from the first access point multi-link device to a second access point multi-link device, and first context information of the site multi-link device is stored within a first duration. When the first access point multi-link device determines that the station multi-link device completes roaming, the first access point multi-link device stores the context information related to the station multi-link device in the first duration instead of deleting the context information immediately after the station multi-link device completes roaming, so that the roaming of the station multi-link device is completed. Therefore, the extra overhead caused by repeated roaming of the site multi-link equipment can be effectively reduced, for example, the extra overhead caused by repeated context transfer or context re-negotiation in a roaming scene can be reduced.