66results about How to "Reduce service downtime" patented technology

One embodiment provides a system that performs protection switching in an Ethernet passive optical network (EPON), which includes an optical line terminal (OLT) and at least one optical network unit (ONU). The system is configured with at least one redundant component for the OLT and/or ONUs, wherein the redundant component can be optical or electrical, and can be a port, line card or link. The system provides protection by detecting a failure, and switching automatically to the redundant components to reduce service disruption time. The protection switching comprises: preserving the existing configuration over the loss of at least one of a multiple-point control protocol (MPCP) message; an operations, administration and maintenance (OAM) message; and a signal on the physical layer. The system recovers from the failure without performing ONU discovery.

The invention discloses a method and a system for monitoring a virtual machine cluster. One specific embodiment of the method comprises the following steps that: a first physical machine sends virtual machine state parameter inquiry instructions to virtual machines in the virtual machine cluster at a first preset time interval; the virtual machines transmit response information to the first physical machine in response to the received inquiry instructions; the first physical machine is interrupted for a second preset time in response to the response information, determines that certain virtual machines fail, judges whether the failed virtual machines satisfy a preset restarting condition or not, and sends a virtual machine restarting instruction to a second physical machine for running the failed virtual machines if the failed virtual machines satisfy the preset restarting condition; and the second physical machine restarts the failed virtual machines according to the virtual machine restarting instruction. Through adoption of the method and the system, monitoring of the virtual machines is realized, failures of the virtual machines can be recovered automatically; the availability of the virtual machine cluster is enhanced; and the service interruption time is shortened.

An active system routing device, upon receiving a location registration request sent from a mobile node, forwards the received location registration request to a standby system routing device. The standby system routing device stores a home address and a care-of address of the mobile node in a way that maps these addresses to each other based on the location registration request received from the active system routing device, monitors a status of the active system routing device and, upon detecting a fault of the active system routing device, executes switching over the self-device to an active system.

A method of packet switched handover in a mobile communication system comprising a terminal, a source node and a destination node comprises negotiating protocol parameters for the destination node on behalf of a new network entity, by communicating with an old network entity whilst the terminal is still connected to the source node; and completing the packet switched handover, such that service interruption on handover is reduced.

The invention discloses a server, and a system and a method for managing the server. The interruption time of an application system can be reduced to be the minimum so as to ensure the continuity of the external service of the application system. The server is configured into a virtual platform; the server comprises a receiving module, a backup module and a takeover module, wherein the receiving module is used for receiving first target data from a production server; the first target data comprises operating system data and application data stored in the production server; the backup module is used for writing the first target data received by the receiving module into the takeover module in the server; and the takeover module is used for operating the operating system data in the virtual platform after the production server is shut down, and replacing the production server to receive the changing operation on the first target data in the operating system data running environment. The system for managing the server comprises a dispatching module and a disaster tolerance proxy server.

In the field of optical communications technologies, a method and a system for optical network switching protection are provided, to solve the problem of long service interruption time during active-standby switching in the prior art. One optical terminal apparatus is selected as a ranging optical terminal apparatus after a service is switched from an active optical central office end apparatus to a standby optical central office end apparatus; a delay difference between delay from the ranging optical terminal apparatus to the standby optical central office end apparatus and delay from the ranging optical terminal apparatus to the active optical central office end apparatus respectively is obtained; and time at which data sent by all the optical terminal apparatuses reaches the standby optical central office end apparatus is synchronized according to the delay difference. The method and the system are mainly used in an optical communication system.

The invention provides a method for realizing rapid recovery of a GEO satellite after maneuvering through inter-satellite measurement. Inter-satellite bidirectional ranging observation data between the GEO satellite and a configurable chain Beidou satellite can be obtained by utilizing an inter-satellite link load; a non-maneuverable Beidou satellite orbit serves as a reference, an orbit determination observation equation is established by utilizing the inter-satellite ranging observation amount between the non-maneuverable Beidou satellite orbit and the GEO satellite, and a satellite state time updating equation can be built by utilizing an orbit dynamics model of the GEO satellite after maneuvering; the observation equation and the satellite state time updating equation are used, the sixnonsingular orbital elements serve as to-be-estimated parameters, a precise orbit of the GEO satellite after maneuvering is obtained, and by using the improved orbit, satellite position information of the GEO satellite after maneuvering is obtained through an upper injection differential correction mode or an orbit forecast and navigation ephemeris parameter fitting mode. The method effectively shortens the time of Beidou GEO satellite navigation positioning service interruption caused by orbital maneuvering, and improves the continuity and availability of services of a satellite navigation system.

The present invention discloses a server integration oriented high efficiency physical machine to virtual machine (P2V) conversion method. The method can minimize a failure time in a P2V conversion process, and comprises: (1) designing a local P2V conversion method, wherein a physical server is converted into a local virtual server by configuring a corresponding virtual key, the local virtual server shares underlying hardware resources of the source physical server, thereby avoiding a time consuming magnetic disk copying and synchronization process in a conventional P2V conversion method; (2) a magnetic disk synchronization module, wherein a virtual machine image is initialized on a remote virtualization platform, the mirror image is synchronized with a mirror image of the local virtual server, magnetic disk copying is performed during operation of the local virtual machine, implicit magnetic disk synchronization is performed during the magnetic disk copying, and this process does not bring about any service failure time; and (3) a virtual machine migration module, where online virtual machine migration can minimize negative effect on the local virtual machine.

A method and apparatus for requesting a unicast bearer setup in a wireless communication system is provided. A user equipment (UE) receives a unicast request indication, which indicates that a target cell does not provide a multimedia broadcast multicast service (MBMS) service in which the UE is interested to the UE, from a network. Upon receiving the unicast request indication, the UE transmits a unicast bearer setup request to the network.

The invention discloses a service migration method and system based on mobile prediction and multi-layer service deployment, belongs to the technical field of mobile edge computing, and is used for solving the problems of overlong service interruption time and overlarge network load faced by service migration in a current mobile edge computing environment. According to the MEC server node prediction method based on the map data, the MEC nodes are accurately predicted, the data are synchronized in advance, the service interruption time during service migration is shortened, and smooth migration of the service is ensured; furthermore, according to a framework based on multi-layer deployment of MEC nodes, smooth service migration in a high-speed mobile environment is met, the number of times of service interruption and redundant flow generated by service migration are reduced, and the network service quality and the user experience quality are improved. The invention provides a practical method which can guarantee the service quality and has high expansibility for the service migration work in the mobile edge computing environment.

The invention provides a hotfix repairing method used in the communication system linux environment. The hotfix repairing method includes the steps that a hotfix for repairing a program bug is set to be a so file capable of being loaded dynamically, and a service program carries out hotfix operation after loading the hotfix file; the hotfix file loading process includes the substeps that the service program operates already, a command is sent to the service program, and after receiving the command, the service program loads the fix so file into memory space; the process of executing hotfix operation includes the substep of starting a hotfixing program, and the hotfix program calls the service program on the mount through a system; the addresses of the function in the fix and the function to be replaced are searched for in the memory space of the service program, a jmp command is written in according to address difference, when getting access to the function, a program skips to the fix function. Fix file analysis can be completed without affecting service, the complexity of analyzing the fix file is reduced, and the interrupting time of service is shortened.

The invention aims to provide a method and a device for controlling file access in a distributed file system. Compared with the prior art, a control device obtains a lease request about a target file in the distributed file system and sent by user equipment; if the target file can be leased, the lease about the target file is allocated to the user equipment; and lease serial number information of the lease is sent to the user equipment; by adding the lease serial number information for representing a lease request sequence of the user equipment, data disorder is avoided when an equipment fault occurs, so that the service availability is improved and the service fault time is shortened; and the lease serial number information is maintained through the control device, the user equipment and a storage device, so that the data access correctness of the user equipment is ensured.

In an example of the invention, network devices are classified into areas. Each of the areas includes edge nodes. A network management apparatus retains fault information including values each indicating whether or not a fault has occurred in each of the areas, retains detour path information including values indicating edge nodes, values indicating alternative areas to the areas and priorities assigned to the alternative areas, identifies, when determined that a fault has occurred in a first area based on the fault information, an alternative area to the first area based on the detour path information, determines, when determined that the fault has not occurred in the identified alternative area, the identified alternative area as a second area through which the active path passes, determines two edge nodes included in the second area, and detect network devices through which the active path passes between the two edge nodes.

A virtual machine control device that controls a C-Plane base station virtual machine for providing a base station function of a virtual base station. The virtual machine control device includes: a virtual machine controller configured to activate a clone of the C-Plane base station virtual machine that is a target of software update; and a virtual base station switching controller configured to assign a network assigned to the C-Plane base station virtual machine to the clone after performing the software update to the clone.

The disclosure provides a method and for cloud service migration. The method comprises: obtaining a migration request related to a cloud service hosted in a source cluster, the migration request comprising a scheduled migration time to migrate the cloud service from the source cluster to a target cluster; migrating, based on the scheduled migration time, disk data associated with an original instance of the cloud service to a disk for servicing a new instance of the cloud service instantiated in the target cluster, the migration of the disk data being performed based on a migration priority order of the disk data; and configuring a data operation of the cloud service for a disk for servicing the original instance as a data operation for the disk for servicing the new instance.

The present invention relates to a POS device, the POS device (1) having improved characteristics, largely comprising: a saving device attachment/detachment structure (100); a card reader bidirectional mounting structure (200); a display frame (300) integrally formed with an input/output port mounting portion; and a hinge-coupling structure (400).

The invention belongs to the technical field of block chains and block chain fragmentation application, and discloses a storage rotation method, system, device and application for a block chain fragmentation system, and the storage rotation method for the block chain fragmentation system comprises the steps that a node adds the block chain system by solving a simple PoW problem; a block chain main chain broadcasts a fragmentation protocol, and multiple nodes are divided into different committees; the array configuration module enables different committees to form a committee array according to protocol requirements; when epoch is finished, the system carries out recombination rotation, transactions are seamlessly migrated to other committees in the committee array, and the system is not interrupted. According to the quick partitioning and resetting method for the block chain fragments, the time of suspending service for resetting the fragments by the block chain system can be remarkably shortened, so that the system can always keep relatively high throughput; according to the method, the network load pressure caused by data exchange of synchronous data of the new fragmentation node can be effectively reduced, and the stability of the fragmentation system is improved.