164 results about "Network reconfiguration" patented technology

The conformance of a network to a set of security policy statements is determined by attempting to violate the policies by routing packets through models of network elements. Policy statements specify whether a set of clients is granted or denied access to a network service offered by a set of servers. Network element models are in accordance to the element's configurable parameters and supported services, which together indicate how the element will treat packets when the element's current configuration is applied to the model. Conformance to a policy statement is determined by building a packet in accordance with the network service and a representative network-element client and server, and by attempting to move the packet from the client to the server by applying the packet to the network element models. Policy conformance is based on whether the packet reaches the service on the server. Network reconfigurations are determined for non-conformant policies.

A method for determining whether to reconfigure a self-organizing network (SON) comprising coverage areas each having a BTS and an antenna and mobile units operating in each coverage area. The method comprises: at each BTS, scanning an antenna beam, measuring performance data, and determining whether measured performance data indicates a network reconfiguration; if a result is negative, at a first BTS returning to the step of scanning the antenna beam; if the result is affirmative, selecting one or more of reconfiguring the SON by changing the RF output power of the first BTS, changing an antenna beam pattern of the antenna at the first BTS, changing an antenna tilt angle of the antenna at the first BTS, changing an operating frequency of the first BTS and updating a proximate cell site list of the first BTS.

A passive optical network having a plurality of optical splitters / combiners each comprising first and second through ports and at least one drop port. The through ports of the plurality of splitters / combiners are concatenated to form a linear arrangement having two end through ports. Optical signals may be transmitted between the end through ports by means of the linear arrangement; and signals may be transmitted between at least one of the end through ports and one of the drop ports by means of the linear arrangement. The splitter / combiners can be inserted to form drop points in a ring or dual-homed passive optical network to provide flexibility in provision of protection and network reconfiguration.

Automating network reconfiguration such as firewall reconfiguration in migrations may include determining network reconfiguration needs in one or more network functionalities of the target environment based on the discovering; and applying the network reconfiguration needs to the one or more network functionalities in the target environment.

The embodiment of the invention provides a network slice method and device and equipment. The method comprises the steps of monitoring a network under a current slice scheme and obtaining user information, terminal information, service information, a wireless access network state and network performance information; estimating a slice operation state corresponding to a current slice scheme according to the user information, the terminal information, the service information, the wireless access network state and the network performance information, thereby obtaining an estimation result; carrying out slice rearrangement and resource reconfiguration according to the estimation result, thereby obtaining a modified slice scheme and informing each slice to operate according to the modified slice scheme; and repeating the process until the difference value between the network performance corresponding to the modified slice scheme and the network performance corresponding to the last slice scheme is smaller than or equal to a preset threshold value. Network reconfiguration based on information sensing is realized; and the purpose of adapting to various service applications and flexible, convenient and high-performance networking can be realized.

A method, apparatus, and computer instructions for responding to a threat condition within the network data processing system. A threat condition within the network data processing system is detected. At least one routing device is dynamically reconfigured within the network data processing system to isolate or segregate one or more infected data processing systems within the network data processing system. This dynamic reconfiguration occurs in response to the threat condition being detected.

A clustered enterprise distributed processing system. The distributed processing system includes a first and a second computer coupled to a communication medium. The first computer includes a virtual machine (JVM) and kernel software layer for transferring messages, including a remote virtual machine (RJVM). The second computer includes a JVM and a kernel software layer having a RJVM. Messages are passed from a RJVM to the JVM in one computer to the JVM and RJVM in the second computer. Messages may be forwarded through an intermediate server or rerouted after a network reconfiguration. Each computer includes a Smart stub having a replica handler, including a load balancing software component and a failover software component. Each computer includes a duplicated service naming tree for storing a pool of Smart stubs at a node.

Generally speaking, systems, methods and media for detection and network reconfiguration upon changes in dynamic host configuration protocol (DHCP) IP addresses are disclosed. Embodiments of a method may include setting a renew time and a rebind time of a DHCP configuration and establishing an IP address with a first DHCP server. Embodiments may also include, after passage of the renew time, transmitting a renew request to the first DHCP server at its IP address and, in response to failure to receive an acknowledgement message from the first DHCP server, determining if the first DHCP server IP address is still valid. Embodiments may also include, in response to determining that the first DHCP server IP address is not still valid, retrieving a second, different DHCP server IP address from a network change event signal and configuring a network adapter based on the second DHCP server IP address.

LED drivers and lighting systems having a dynamically reconfigurable switching network is disclosed. The lighting system comprises a switching network which provides interconnections between LEDs or LED lamps that can dynamically reconfigure between largely parallel circuits and largely serial circuits as the instantaneous voltage of a power supply varies. When the instantaneous voltage of the power source is low, the switching network interconnects the LED lamps in a largely parallel configuration. As the instantaneous voltage increases, the switching network reconfigures and interconnects the LED lamps with increasing serial configurations. As the instantaneous voltage begins to decrease, the switching network reconfigures and interconnects the LED lamps back to a largely parallel configuration.

The invention discloses a system and a method for achieving network reconfigurability of a mixed WDM (Wavelength Division Multiplexing) / TDM (Time Division Multiplexing) PON (Passive Optical Network). In the system, one optical line terminal is adopted and is sequentially connected with n remote end nodes through double fiber feeder lines, and all remote end nodes are respectively connected with m optical network units by using a shunt through distributed optical fibers; wherein each remote end node adopts one reconfigurable optical add / drop multiplexer based on a wavelength blocker and a tunable optical filter technology so as to realize the function of reconfiguring a network downlink signal wavelength resource, the reconfiguration of an uplink is realized by utilizing a wavelength re-modulation technology based on a reflection type semiconductor optical amplifier, and meanwhile, the system can improve the network reconfiguration property when confronting certain optical fiber faults. The method ensures that in the network, the wavelength resource of the network can be flexibly reconfigured according to changing bandwidth requirements, and meanwhile, the reconfiguration capability of the mixed PON on confronting emergencies can be realized by using one backup feeder line optical fiber loop and a series of switch transformation, thereby ensuring the network to be with better reliability.

By selecting access points specific to the various components of call-content of a call, a monitoring agency is ensured of obtaining the call-content of each participant in telephone call irrespective of call transfers and network reconfiguration. Devices in the telecommunications system such as network devices can provide appropriate access. Examples of suitable network devices may include gateway, an access gateways, trunk gateways, portals, ATM switches, routers, and border elements.

A clustered enterprise distributed processing system. The distributed processing system includes a first and a second computer coupled to a communication medium. The first computer includes a virtual machine (JVM) and kernel software layer for transferring messages, including a remote virtual machine (RJVM). The second computer includes a JVM and a kernel software layer having a RJVM. Messages are passed from a RJVM to the JVM in one computer to the JVM and RJVM in the second computer. Messages may be forwarded through an intermediate server or rerouted after a network reconfiguration. Each computer includes a smart stub having a replica handler, including a load balancing software component and a failover software component. Each computer includes a duplicated service naming tree for storing a pool of smart stubs at a node.

The present invention relates to a safe operation and prevention control technique of an active distribution network, wherein preventive control is performed through optimizing a network structure for satisfying a safe margin requirement in operation of the distribution network, thereby effectively improving operation reliability of the distribution network; and simultaneously operation and short-term planning of the distribution network are guided for realizing higher economic benefit and social benefit. For this purpose, the technical solution adopted in the active reconfiguration strategy of the invention is characterized in that the active reconfiguration strategy of the distribution network and the preventing control method comprise the steps of: firstly, establishing a maximal power supply capability evaluating index which is adapted for the active distribution network; when the maximal power supply capability index of the distribution network is lower than a system safe guard line, performing active reconfiguration of the distribution network for achieving multiple targets of improving the maximal power supply capability index and minimizing number of times of operating a network reconfiguration switch; and if the maximal power supply capability index of the distribution network in the current operation manner is lower than a preset safe guard line, starting an active reconfiguration module for performing network optimizing reconfiguration. The active reconfiguration strategy of the distribution network and the preventing control method according to the invention are mainly applied for safe operation and preventing control of the distribution network.

A structure and method for power distribution to a network for an integrated circuit chip complex are provided. The chip complex has at least two sectors, each having at least one power providing connection with at least one of said connections beings individually addressable by, and isolatable from, a given power source. At least one MEMS is positioned to selectively connect and disconnect said at least one connection to and from said given power source.

The invention relates to the technical field of train address finding and train reconnection, in particular to an intelligent train addressing and address finding method and a dynamic cross-group reconnection networking method. The numbers of compartments and the direction of the train are recognized according to present current signals collected by grouping devices, when the train is electrified in the direction or the compartments are increased or reduced, reconfiguration is conducted on the network of the train, the address information of all the devices on the train is re-determined, the network attributes of the network nodes where the grouping devices are located are modified, the intelligent train addressing and address finding function and the dynamic cross-group reconnection networking function are achieved, and the demand for dynamic reconnection of a train network of a high-speed train, a locomotive, a passenger train and a city rail train is met.

The invention relates to a method for restoring power supply, in particular to a method for restoring power supply in a power system. In the method, the power supply restoration strategy adopts the islanding algorithm based on connectivity of the short circuit fast recognition network. The method has the following advantages: adopting optimization of tangential load of the intelligent optimization algorithm and network reconfiguration, dividing the optimization process into two parts, respectively establishing mathematical models, reducing the optimization variable dimension and the quantity of combination, shortening the optimization time, effectively controlling the combination explosion and solving the problem of weight values of multiple objective functions; and adopting the flexible power flow algorithm, introducing power quality (frequency) constraint into power supply restoration in the power system, taking the static characteristic of the engine into consideration, using the system frequency as the constrain condition of power supply restoration and improving the load restoration quantity.

A method of reconfiguring a network having a transport plane for carrying subscriber traffic flows within end-to-end connections, a control plane for managing at least a portion of resources of the transport plane allocated to each connection, and a management plane for implementing management functions in the control plane and any resources of the transport plane that are not managed by the control plane. The method comprises installing an updated version of a control plane name space for a target node of the network. For each connection traversing the target node: a control plane to management plane migration is performed for removing connection state in the control plane associated with the connection, so as to transfer ownership of the connection from the control plane to the management plane; followed by a management plane to control plane migration for installing new connection state in the control plane associated with the connection, so as to transfer ownership of the connection from the management plant to the control plane, the new connection state being defined using the updated version of the control plane name space.

A cellular network device comprises a data network indicator and an automatic network reconfiguration module. A data network indicator provides an indication when data network connectivity associated with a cellular network does not meet performance or configuration criteria. An automatic network reconfiguration module automatically reconfigures network data connectivity in the event that an indication has been provided that data network connectivity does not meet performance or configuration criteria. A cellular network device comprises a data network indicator and a management channel. A data network indicator for providing an indication when data network connectivity associated with a cellular network does not meet performance or configuration criteria. A management channel for enabling automatic access in the event that an indication is received that data network connectivity does not meet performance or configuration criteria, wherein the management channel enables automatic access to the cellular network device for administrative maintenance or reporting.

The invention belongs to the technical field of spatial information, and discloses a task-driven reconfigurable spatial information network resource management framework and method. The control management ability of a plurality of non-shared ground stations is centralized, and a network reconfiguration controller with overall dynamic control ability is constructed in a control center. A reconfigurable resource management framework is constructed through effective coordination of a task control center, a ground control link and an air control link. A control command is generated in real time bythe reconfiguration controller and transferred to a switch through an optical fiber link and a satellite-ground link. An application layer obtains various task input, and realizes task generation. Acontrol layer realizes unified planning of tasks in the whole network and unified scheduling of resources. A resource layer forms a resource pool using a resource virtualization technology, and provides a transmission channel. The invention provides theoretical support and technical guarantee for the task-driven spatial information network in the future, and plays a leading and promoting role in the research and development of the spatial information network in the future.

The invention discloses a method for allocating frequency spectrum resources based on honest cooperation in a composite cognitive radio network, which comprises the allocation processes: firstly, access networks estimate respective minimum bandwidth demands and inform a network reconfiguration manager of the minimum bandwidth demands; secondly, the network reconfiguration manager dynamically allocate the frequency spectrum resources to the access networks according to a cooperative game model and a Nash bargaining method; thirdly, the network reconfiguration manager calculates utility loss brought by one access network in all the access networks to the other networks in sequence, takes the utility loss as a cost factor of the access network and calculates the cost required to be paid by the access network; and fourthly, the network reconfiguration manager respectively transmit the allocated frequency spectrum resources and the cost to the access networks. The invention not only can effectively encourage the access networks to honestly put forward the minimum bandwidth demands, remit the situation of excessive use of the frequency spectrum resources at pains on the basis of satisfying the frequency spectrum demands of each access network, improve the whole utility of all the access networks, but also can be used for dynamically allocating the frequency spectrum resources in the composite cognitive radio network.

The invention relates to an active power distribution network planning method based on network reconfiguration. The method comprises the steps of (1) establishing an active power distribution network planning model based on network reconfiguration, including an objective function and a constraint function, the objective function taking the minimum social total cost overall expense as an objective, and the constraint functions including an installation constraint, a network operation security constraint and an active management constraint; and (2) transforming the power network planning model into a second-order conic programming form and performing optimization solving to obtain a power network planning scheme. Compared with the prior art, the method of the invention regards the network reconfiguration as an extended plan with zero line investment cost and considers all the lines as to-be-built lines in the network reconfiguration process, and the network reconfiguration can bring a decrease in the overall cost without an increase the investment in the power distribution network.

The invention relates to a building method of a self-organized reconfigurable wireless sensor network, which comprises four parts including a networking procedure, a media access protocol, network protocol data packet frame formats and node setting. A host node exists, new slave nodes which are arranged in an effective area automatically send access request information to the host node, and the host node assigns addresses and information transfer routes to the new slave nodes; data transmission is carried out among the network nodes in a multi-hop mode, and the P-persistent media access protocol of carrier sense multiple access / collision avoidance is adopted; the transmitted information adopts different frame formats according to the different tasks; hardware of the host node comprises a transmitting and receiving controller and a computer; and hardware of each slave node comprises a transmitting and receiving controller, a single-chip microcomputer chip and a filter amplifying circuit. The building method disclosed by the invention is simple and easy for operation. A built system has the functions of self-organized network access, network reconfiguration and distributed data acquisition transmission, and the building method is particularly suitable for building small wireless data acquisition sensor networks.

An enterprise network is provided that includes a plurality of internal terminals 108, 112 corresponding to a plurality of subscribers and a network reconfiguration agent 212 operable to (a) determine that at least one of a requested connection to a first terminal 112-1 associated with a subscriber and a connected communication with the first terminal 112-1 will have and / or has an undesirable grade of service and (b) in response thereto, perform at least one of the following operations: (i) direct the requested connection or connected communication to a second terminal 108, 140 associated with the subscriber; and (ii) change the communication path for the requested connection or connected communication from a first communication path comprising a first network 110 but not a second network 404 to a second communication path comprising the second network 404 but not the first network 110.

The invention presents a re-allocating method of multi-hop wireless mobile communication network. A network mobile station M communicates with a base station A through at least one relay node N to enter into the network and the base station A is close to B, if the network need re-allocation, A sends the instruction to start re-allocation to the relay node N and station B when sending the re-allocation request and getting the permission of B, receiving the instruction, station B adjusts its covering areas, at the same time, relay node N launches the corresponding measuring process to establish the communication with the station B; the station B completes the communication with relay node N, and sends the instruction of completing re-allocation to station A and node N; receiving the instruction, station A adjusts its covering areas to end the communication with node N and the network re-allocation is complete.

The invention relates to the field of power supply and distribution technology, and discloses a method for realizing self-adapting network reconfiguration at a distribution network terminal. The method is characterized by comprising the followings steps of: (a) constructing an input vector and an output vector of a distribution network terminal neural network module; (b) initializing a neural network; (c) training the neural network by using samples; and (d) treating the distribution network for reconfiguration with the trained neural network module. The invention has the benefits of buildingthe corresponding relation between a dynamic distribution network load and an optimal network topology by using the nonlinear mapping relationship between the input and output of the neural network and the self adapting self-learning ability to realize the reconfiguration of the distribution network, thereby reducing the line loss of the distribution network and improving the system economy, balancing the loads, eliminating the overload, improving the voltage quality of supplied power, and further improving the reliability of the supplied power.

A method, computer program product, and computer system for performing, by a single unified architecture, an initial network validation, wherein the initial network validation may be performed before a storage cluster is fully configured. The single unified architecture may perform a cluster expansion validation, wherein the cluster expansion validation may be performed before at least one of a new storage application and a new storage controller is added into the storage cluster. The single unified architecture may perform a pre-reconfiguration validation, wherein the pre-reconfiguration validation may be performed as a network reconfiguration operation in the storage cluster before a network reconfiguration request is processed. The single unified architecture may perform ongoing network validation, wherein the ongoing network validation may be performed periodically as a background process.

The present invention discloses a method and system for network reconfiguration in an urban distribution network. The method comprises: establishing multi-objective optimization functions of annual power shortage of the system, average power-off duration of the system, average power-off frequency of the system and minimal network loss of the urban distribution network; determining constraint conditions of the multi-objective optimization functions and the weight of each objective optimization function; setting an on-off initial value of the switch of each load node in the urban distribution network; according to the on-off initial value of the switch of each load node, the multi-objective optimization functions and the constraint conditions, using the multi-objective particle swarm optimization algorithm based on the decomposition and differential evolution to solve the multi-objective optimization functions; and according to the on and off of the switch of each load node in the urban distribution network corresponding to the weighted and minimum multi-objective optimization function solution, reconstructing the network in the urban distribution network. According to the method and system disclosed by the present invention, the network loss of the urban distribution network containing the distributed power supply and the automobile charging station can be optimized, the operation cost can be reduced, and the supply voltage quality of the urban distribution network can be improved at the same time.