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.

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.

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.

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 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 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.

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.