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50 results about "Network awareness" patented technology

Network Awareness enables applications to sense changes to the network to which the computer is connected, such as closing a mobile PC at work and then opening it at a coffee shop wireless hotspot. This enables Windows Vista and Windows 7 to alert applications of network changes.

Network-awareness cloud data center virtual machine allocation method

ActiveCN103414752ASmall maximum distanceSmall maximum communication delayResource allocationMemory adressing/allocation/relocationNetwork awarenessComputer architecture
The invention discloses a network-awareness cloud data center virtual machine allocation method. The network-awareness cloud data center virtual machine allocation method specifically comprises the following steps that: 1, physical server information of each sub-data center in a cloud data center and distance information between the sub-data centers are obtained; 2, sub-data center selection and virtual machine allocation are performed; 3, physical server information of each sub-data center in a selected sub-data center set and communication bandwidth between physical servers can be obtained; and 4, physical server selection and virtual machine allocation are performed. With the network-awareness cloud data center virtual machine allocation method of the invention adopted, the heterogeneity of virtual machines which are required by users are fully considered; requirements for fine-grained virtual machines can be realized; and a virtual machine allocation problem is mapped to a maximum clique problem. Application based on a two-dimensional knapsack algorithm is provided; communication cost between allocated virtual machines can be decreased as far as possible; and at the same time, the maximum distance between the sub-data centers can be minimum, and the maximum communication delay between the physical servers can be minimum.
Owner:SHANGHAI JIAO TONG UNIV

Methods for routing decision and flow table consistency optimization in software defined satellite network

The invention discloses methods for routing decision and flow table consistency optimization in a software defined satellite network and relates to the field of software defined satellite networks. The method for flow table consistency optimization comprises the following steps of firstly, monitoring the global state of the satellite network in real time through network awareness, maintaining topological graphs in the satellite network at different moments and updating the topology state and events timely; secondly, combining a routing decision based on an issued delay and a routing decision based on path similarity, wherein the needed issued delay and the write delay are smaller, so that the total delay of a flow table updating process is reduced; and lastly, reducing the influence of the time delay from the switch to the a controller on the flow table inconsistency through adjusting an issued order of a switch, and reducing the number of the issued flow table entries to reduce the write time of the flow table entries through carrying out classification processing on the old and new flow tables, thereby reducing the total delay for flow table updating. According to the methods, a problem of inconsistency of flow table updating of the software defined satellite network is better improved.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP

Method for updating flow table and optimizing flow table consistency of software defined satellite network

The invention discloses a method for updating a flow table and optimizing flow table consistency of a software defined satellite network, and relates to the field of the software defined satellite network. The method for optimizing the flow table consistency comprises the steps of firstly monitoring a global state of a satellite network in real time through network awareness, maintaining topological graphs at different moments in the satellite network and updating a topological state and events of the network in time; then combining a transmission time delay based routing decision with a path similarity based routing decision, wherein as the needed transmission time delay and the needed write-in time delay are relatively small, the total time delay of the flow table updating process is reduced; and finally, reducing influences from the time delay which is from a switch to a controller to the inconsistency of the flow table through adjusting the transmission sequence of the switch, reducing the number of transmitted flow table items through classifying new and old flow tables so as to reduce the write-in time of the flow table items and accordingly reduce the total time delay for the updating of the flow table. The invention improves the inconsistency problem of the flow table updating of the software defined satellite network in a better way.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP

Network awareness based virtual machine dispatching and re-dispatching method

The invention provides a network awareness based virtual machine dispatching and re-dispatching method. The network awareness based virtual machine dispatching and re-dispatching method includes a virtual machine dispatching method and a virtual machine re-dispatching method. The virtual machine dispatching method comprises the steps of firstly obtaining a current state of a data center, judging whether an initial communication matrix exists or not, judging whether initial clustering is needed or not according to a judgment result of the initial communication matrix existing situation, then using a shortest sub-tree algorithm to deploy a whole set of virtual machines and a part of clustered virtual machines to virtual machines; then comparing the current state of the data center with a historical state, and triggering re-dispatching when the network communication matrix is obviously changed. The virtual machine re-dispatching method comprises the steps of firstly calculating priorities of all sets of virtual machines, re-dispatching the virtual machines with high priorities, trying to move the sets of virtual machines onto physical machines on the same machine frame, and adopting the step of performing clustering towards the virtual machine center facing the machine frame to conduct re-dispatching if operation fails. By means of appropriate virtual machine migration, the performance of tasks deployed on the virtual machines and the overall network communication efficiency of the data center are improved.
Owner:NANJING UNIV

Method for configuring and optimizing carrier frequencies in multiple carrier frequency system and wireless network controller

The invention discloses a method for configuring and optimizing carrier frequencies in a multiple carrier frequency system and a wireless network controller on the basis of the method. The method comprises the following steps of: monitoring state information of a wireless network resource node in real time; when the state information of the wireless network resource node reaches a preset state information reference condition, acquiring wireless parameter configuration information matched with the state information and carrying out evaluation on the wireless parameter configuration information; and according to the wireless parameter configuration information which passes evaluation, configuring the wireless network resource node. According to the invention, the effect of updating configuration of the wireless network resource node at any time according to variation of the state information of the network resource node is realized. According to the invention, the network awareness of a user can be rapidly promoted; wireless network construction cost is reduced; and the problem of implementing dynamic distribution of carrier frequency resources in a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system according to the wireless network resource condition is solved. In the wireless resource management process, carrier frequency information is dynamically configured according to the interference characteristics between related cells, so that the effect that frequency reuse density between the related cells in a network is the minimum is achieved.
Owner:CHINA MOBILE GROUP JIANGSU

Device and method of data communication by storing digital certificate private key

The invention relates to the technical field of information safety, in particular to a device and a method of data communication by storing a digital certificate private key. The device of the data communication by storing the digital certificate private key comprises an audio input/output module, an audio conversion module, a private key management module, a near field communication (NFC) module, a power supply module and a micro-controller, wherein the audio input/output module is used for being connected and communicated with mobile terminal audio and data, the audio conversion module is used for carrying out mutual conversion and decryption processing on the audio and the data, the private key management module is used for carrying out storage through a certificate and a private key and carrying out data invoking and business signature during the process of identity authentication, the certificate and the private key are applied for through public key infrastructure (PKI)/certificate authority (CA), the NFC module is used in data communication at short ranged through the NFC technology, the power supply module is used for supplying power through a mobile terminal, the micro-controller is used for being connected with the modules and carrying out initialization, state transition and powering up of an interface circuit uniformly. According to the device and the method of the data communication by storing the digital certificate private key, a mobile terminal audio port is adopted to carry out data communication and exchange, and the range of application of a digital certificate is enlarged. The device and the method of the data communication by storing the digital certificate private key is suitable for the identity authentication of various application business of mobile internet and capable of improving reliability and credibility of network awareness.
Owner:北京祥云天地科技有限公司

Distributed network awareness information storage and query system

The invention discloses a distributed network awareness information storage and query system. The distributed network awareness information storage and query system comprises a user operation interface, an interface layer, an execution layer and a storage layer, wherein the user operation interface is used for accomplishing interaction between a user and the system, and the user carries out storage operation and query operation on dynamic information and static information through the user operation interface; the interface layer is used for receiving or submitting network awareness information stored or queried by the user, and identifying an operation instruction of the user, and comprises a query interface and a storage interface; the execution layer is used for analyzing a data access request of the upper layer, converting the data access request into an internal request of the system, and processing the internal request, and comprises a weak-reading interface, a locating reading interface, an identification interface, a weak-writing interface, a strong-writing interface and a reading repair interface, wherein the locating reading interface and the identifying interface are newly added on the basis of original interfaces of the Cassandra; the storage layer is used for storing the dynamic information and the static information. According to the distributed network awareness information storage and query system, the system load and the network overheads are reduced, and efficiency of storage of the network awareness information is improved.
Owner:合肥臻谱防务科技有限公司

Multi-scale unsupervised seismic wave velocity inversion method based on observation data self-coding

The invention provides a multi-scale unsupervised seismic wave velocity inversion method based on observation data self-encoding, which extracts large-scale information in the data through self-encoding of the observation data, and utilizes the information to guide an inversion network to complete recovery of different scale features in a velocity model, thereby reducing the non-linear degree of inversion and improving the accuracy of the inversion. On the basis, a trained observation data auto-encoder coding structure is embedded into the inversion network to complete effective extraction of seismic observation data information by the front end of the inversion network, so that the inversion network can better analyze information contained in seismic data and better establish a mapping relation between the seismic data and a velocity model; the inversion method is completely unsupervised, position codes are added to the observation data input into the network to assist the layout form of a network awareness observation system, and practical engineering application is facilitated. According to the method, an accurate inversion effect of the seismic velocity model can be obtained under the condition that no real geologic model is used as a network training label.
Owner:SHANDONG UNIV
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