110results about How to "Reduce network latency" patented technology

Presented is a system and a method for load balancing multiple globally-dispersed servers based on client-centric performance criteria. The infrastructure of the system includes load balancing domain name servers (DNS-LBs) deployed in close physical proximity to the Internet service providers' points of presence. The DNS-LBs are then able to monitor the performance of the servers from a location close to the clients, which allows the DNS-LBs to select a server that will yield the best performance from that location for the client. A second level of the infrastructure utilizes domain name servers (DNS-Bs) that are deployed on the Internet backbones and regional provides. The authoritative domain name servers (DNS-As) for the servers to be load balanced refer all name queries to these DNS-Bs. The DNS-Bs then refer the queries to one of the DNS-LBs based on a mapping of the DNS-ISP address to its physically proximate DNS-LB. The DNS-LB then returns the IP address of the server that will provide the best performance from that location.

A method for compressing a stream of application layer network traffic communicated over a transport layer connection of a virtual private network connection between a client and a server using an appliance. The appliance intercepts one or more transport layer packets of a stream of application network traffic communicated via a transport layer connection of a virtual private network connection between a client and a server. The appliance accumulates data from a payload of the intercepted transport layer packets, determines data accumulated for transmission should be compressed based on one or more compression trigger, and compresses the accumulated data into a self-contained compression block for transmission.

A variety of techniques for concealing the content of a communication between a client device, such as a cell phone or laptop, and a network or cloud of media nodes are disclosed. Among the techniques are routing data packets in the communication to different gateway nodes in the cloud, sending the packets over different physical media, such as an Ethernet cable or WiFi channel, and disguising the packets by giving them different source addressees. Also disclosed are a technique for muting certain participants in a conference call and a highly secure method of storing data files.

A method for at least apparently reducing the effects of network lag is provided. For a networked interactive game system including at least one local game system and at least one remote game system, distributed game play of an interactive game with at least an apparent reduction of network lag at the local game system is allowed. An input command which was generated by a local user of the local game system that controls a local object is intercepted. Furthermore, at least state data of a remote object that was determined in a network simulation of a previous game frame is retrieved. Interaction data of the local object for a local simulation of an immediately previous game frame may also be retrieved. A local simulation of the first game frame is generated based on the input command, the state data, and the interaction data.

The invention features a method of reducing perceived network latency in processing a query from a handheld client device processed by a remote system. The client device receives incremental input including a sequence of incremental user actions for identifying content items on the remote system. The client device transmits a first subsequence of the input to the remote system for incrementally identifying descriptive terms associated with desired content items. The remote system selects a first set of content items based on the first subsequence and transmits them in a reply to the client device. The client device selects a second set of content items from the first set based on a second subsequence of the input. The second subsequence includes incremental input received by the client device while it was waiting for the first reply. The client device orders and presents the second set of content items to the user.

A computer gateway for an intranet of computers, including a scanner for scanning incoming files from the Internet and deriving security profiles therefor, the security profiles being lists of computer commands that the files are programmed to perform, a file cache for storing files, a security profile cache for storing security profiles for files, and a security policy cache for storing security policies for client computers within an intranet, the security policies including a list of restrictions for files that are transmitted to intranet computers. A method and a computer-readable storage medium are also described and claimed.

A method for serving content from a radio-access network cache includes detecting a request from a mobile device for content in the cache. The request is sent to a content-origin server, and a response is received therefrom.

A management server maintains a set of metadata describing a storage structure of a storage server. In response to a change of the storage structure, the management server automatically updates the set of metadata. The management server also manages information indicating what portion of the set of metadata is cached locally at a storage management client application. If that portion of the set of metadata is updated in response to the change of the storage structure, the management server sends information to update the metadata cached locally at the storage management client application so that the cached metadata is consistent with the set of metadata at the management server. By caching data at the storage management client application and at the network storage management server, the present invention advantageously avoids sending unnecessary requests to the storage server, thereby reducing network latency.

Methods, systems, and computer program products for reducing web latency using adaptive speculative preconnection are provided. Exemplary methods, systems, and computer program products for reducing web latency include initiating a connection to a first URL hostname, and obtaining speculative information associated with the first URL hostname. The speculative information includes a likelihood of connecting to a second URL hostname as a result of initiating a connection to the first URL hostname. The methods, systems, and computer program products also include determining whether to preconnect to the second URL hostname based on the speculative information. The methods, systems, and computer program products further include providing an instruction to preconnect to the second URL hostname when a determination to preconnect is made.

The disclosed embodiments disclose techniques for managing opportunistic locks in a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in the cloud storage systems; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem. During operation, a client sending a request to access a file from a cloud controller also requests an opportunistic lock for the file. If there are no other outstanding client accesses on the other cloud controllers that preclude the requested opportunistic lock, the cloud controller grants the client file access and the opportunistic lock.

The invention discloses a connectivity sensing routing method on the basis of location prediction in a vehicle ad hoc network. By the connectivity sensing routing method, the problem that the connectivity of routes cannot be guaranteed when the optimal routes are determined in the prior art is solved. The connectivity sensing routing method includes particular steps of firstly, finding required routes for arriving at a destination node by a region flooding process; secondly, taking forwarding time delays of data packets on the routes with certain connectivity probabilities into consideration and selecting the route with a large connectivity probability and the shortest time delay as the optimal route; thirdly, forwarding the data packets according to a process on the basis of location prediction. The connectivity sensing routing method has the advantages that the connectivity of the acquired route is superior, the selected optimal route is high in connectivity probability and short in time delay, the data packets can be effectively prevented from being forwarded to sections which can be interrupted easily, the data packet delivery rate is increased, and the data packet transmission time delay is shortened; locations of neighbor nodes are predicted, the probability that the data packets are forwarded to the failure neighbor nodes is effectively reduced, and the data packet delivery rate is increased.

The invention discloses a content distribution system, which comprises a content server, a central server, an edge server and a user terminal, and is characterized in that the content server is used for storing a video file which can be accessed by the user terminal; the central server is used for obtaining heat ranking information of the video files according to record statistics of the video files requested by each user terminal, acquiring partial contents of a plurality of video files with highest heat degrees from the content server according to the heat degree ranking information of the video files in a trough period of network link transmission, and sending the partial contents to the edge server for pre-caching; and the edge server is used for sending the video file requested by theuser terminal to the user terminal. The invention further discloses a corresponding content distribution method. By applying the technical scheme disclosed by the invention, the code rate in the video data transmission process can be reduced, and the load of a data link at a server is reduced.

The invention discloses a hybrid cloud storage method based on multi-level cache. The method comprises the following steps: a user joins a user group for login according to the local area network where the user is, and sends a user name and a password for user authentication to a super node of the region where the user group is, the super node achieves authentication of the user according to the received user name and password, the user receives a catalog view returned from the super node and metadata information of all files and sends the catalog view to a group leader node of the user group, the group leader node judges whether the buffer memory space of the group contains files in the catalog view according to the received catalog view, and if yes, feeds the IP address of the node in which the files are saved in the buffer memory space of the group to the user, and the user determines the optimal access path of each file in the catalog view according to the received feedback information. The hybrid cloud storage method allows the user to access data from the user group cache and the super node layer cache which have lower network delay, thereby lowering the network delay of the user data access.

The invention relates to a communication method for solving problems due to a hidden terminal in a wireless network based on a wireless interference cancellation technique and a node full-duplex mode. Under a wireless local area network physical layer, wireless network nodes are coded into special interference signals by an OFDM (Orthogonal Frequency Division Multiplexing) technology, and overlapped into data signals in the air by means of ''attachment''. The control information and the data information can be transmitted in parallel, thus, the resource consumption on control information can be saved. The nodes for receiving the data information can remove the interference signals by an interference canceling technology in order to obtain the original data. The node for receiving the control information can demodulate the control signal from the mixed signal by an energy detecting technology, so as to obtain the physical address of the node which is transmitting in a collision domain, as well as establishing a relative node list. By inquiring the transmitting state and the receiving state of adjacent nodes, the node can determine whether it is the hidden terminal, so as to avoid transmission of conflict data and increase channel utilization rate.

The invention discloses a method and device for differentiating QoS strategies of different messages. The method comprises the steps that a message is received; when the message is a first class of message, the initial characteristic quantity of the first-class message is replaced with a special characteristic quantity, and the message is marked as a first priority; when the message is a second-class message, the message is marked as a second priority according to the initial characteristic quantity of the second-class message, wherein the network delay sensitivity of the second-class message is higher than that of the first-class message, and the level of the second priority is higher than that of the first priority; the first-class message and the second-class message are mapped to a first queue and a second queue respectively, wherein the priority of the second queue is higher than that of the first queue; the second-class message is transmitted and processed preferentially by the adoption of the corresponding QoS strategies. The differentiated QoS strategies are adopted for different messages, and a network delay of the time-delay-sensitive message is effectively reduced.

The invention discloses an indoor positioning-oriented fog network realization system and method. A cloud computing center for indoor positioning has problems of long network delay and high application cost in processing. The system comprises an SDN controller, a positioning display screen, a fog network, a positioning access network, and a positioning terminal. The method comprises the steps that the positioning terminal uploads positioning data information to the fog network; positioning data parameters are reported to the SDN controller; and the SDN controller monitors states of all fog nodes in the fog network, estimates the required computing capability and the computing capability of the nodes of the fog network, optimizes distributed coordination of multiple fog nodes, selects and uploads a shortest route to the positioning display screen, so as to finish indoor positioning. The fog network nodes are used as a processing unit of indoor positioning data, the SDN controller manages the network, computing and storage resources of the fog network nodes in a unified manner, so that the network delay and application cost of indoor positioning are lowered effectively. The system and method are used in the technical field of communications.

The invention discloses a paging control method, a dual-card dual-standby terminal and a computer readable storage medium. A first SIM card and a second SIM card of the dual-card dual-standby terminalboth support an LTE network type, and the paging control method comprises the steps of determining a fact that a data service provided by a data network is in the first SIM card and receiving a paging message from a current service of the network by the second SIM card; judging whether the second SIM card is a non-data service card; if so, intercepting the paging message; according to the method,, the problems of network resource waste and increase of power consumption of the dual-card dual-standby terminal due to incapability of effectively processing network paging after RRC connection is established between the existing double-card double-end terminal and the network are solved, the invention further discloses the dual-card dual-standby terminal and a computer readable storage medium,and by implementing the scheme, the waste of network resources is avoided, and the power consumption of the dual-card terminal is reduced.

The invention relates to a job scheduling method for streaming data. The job scheduling method for the streaming data comprises the following steps: a scheduling manager acquires jobs to be scheduled from a scheduling queue in real time, and utilizes a directed acyclic graph for generating a processing unit queue according to information of the jobs to be scheduled; according to the ratio of the non-local communication number of physical nodes to dominant resources, the scheduling manager selects one physical node for each processing unit in the processing unit queue and distributes all the processing units to the corresponding physical nodes respectively; when an actuator starts one processing unit, a linux container is established on the physical node of the processing unit, and then the processing unit is started inside the linux container. According to the job scheduling method for the streaming data, the processing units are scheduled to the physical nodes which are small in non-local communication number and low in load, the processing units which need communication frequently can be concentrated to the same physical node, and therefore network communication across the physical nodes is reduced.

A prefetching technique for a network interface is provided to give the network interface the opportunity to prefetch data out-of-order into send queues in the network interface, rather than prefetching data in the order produced and deposited into main memory. That allows, the state of the send queues to be taken into consideration when deciding an appropriate order to prefetch data.

The invention relates to a multi-channel routing method based on minimum channel switching in a self-organizing network. The method demands that an originating node passes through self-maintained routing and channel use information, during routing updating and maintaining, each node in a network also needs to maintain the information of available-channels around the node and the available channelinformation of each leap in routing to a destination node beside necessary routing information, and a periodic global routing updating method and an event trigger local routing updating method are adopted; when connection is established, the originating node selects the best routing to the destination node according to the available channel gather of each leap in a routing list and finishes the distribution of channels by dint of RTS / CTS of a media access control layer, wherein the best routing means the routing needing least switching time delay. The invention aims to try best to reduce channel switching in routing and reduces time delay generated in channel switching as far as possible, thereby reducing the network time delay and enhancing the throughput.

A variety of techniques for concealing the content of a communication between a client device, such as a cell phone or laptop, and a network or cloud of media nodes are disclosed. Among the techniques are routing data packets in the communication to different gateway nodes in the cloud, sending the packets over different physical media, such as an Ethernet cable or WiFi channel, and disguising the packets by giving them different source addressees. Also disclosed are a technique for muting certain participants in a conference call and a highly secure method of storing data files.

Network latencies are reduced by detecting a metadata access call for filesystem metadata contained in a filesystem node of remotely located filesystem. The metadata corresponding to the metadata access call is fetched when the metadata corresponding to the metadata access call is not contained in a local filesystem cache that has a hierarchical structure corresponding to a hierarchical structure of the remotely located filesystem. Metadata related to the metadata corresponding to the metadata access call from the remotely located filesystem is prefetched when the related metadata is not contained in the local filesystem cache. The metadata related to the metadata corresponding to the access call can be contained in a child node or a parent node of the node containing the metadata corresponding to the access call, or the descendants of such nodes.

The present disclosure relates to an industrial control network security early warning method and system, wherein the industrial control network security early warning method includes: obtaining security-related data of control events of the industrial control network; performing CEP analysis on the security-related data; and according to the CEP analysis results Carrying out security analysis of control events; wherein, the CEP analysis includes: statistically summarizing the security-related data in a fixed time window to determine the relevant attributes of the control events; and combining the relevant attributes of the control events with a preset rule engine to Correlation analysis is performed on control events to obtain the correlation among control events. The industrial control network security early warning method and system of the embodiments of the present disclosure can be deployed in industrial control sites with limited resources, and is suitable for a single node or multiple node deployment environment. The deployment method is more flexible, and the network delay is reduced, and the risk early warning capability is improved. .

The invention discloses a wireless network seamless transfer method and device based on a software-defined network. By introducing a framework of the software defined network, the method and the device of the invention separate a data plane and a control plane in a network and improve a traditional distributed network into a centralized network. A client accesses two different APs in a wireless network by using double network cards, and a controller monitors network topological changes in real time and generates an appropriate flow table for corresponding conversion equipment, and establishes a corresponding logic link to enable the network service of the client not to be interrupted while the client is roaming in the range of the wireless network. The method has the advantages as follows: in comparison with the traditional network, the controller controls the data flow with finer granularity, issues the flow table according to the network topological changes and a network segment where the client is located, and correctly orients the data flow to the current position of the mobile client so that the client could roam across the network segments in the range of the wireless network, while the network service of the client is not interrupted, namely seamless transfer is achieved.

A system, apparatus, and method for improving the user experience when accessing web pages containing embedded objects over a network. In one embodiment, information regarding the contents of a locally accessible cache is added to a request directed to a web server. The information is used to control certain aspects of a pre-fetch process that is designed to reduce network latency affects and improve network resource utilization, thereby improving a user's experience. The cache contents information may be provided to an intermediate server via a modification to an existing request-response protocol, with the information being encoded or compressed if desired to reduce data transport requirements. The information is used by the intermediate server to determine whether to request an embedded object referenced in the requested resource or web page, and to determine if a browser having access to the cache will request the object or access the object from the local cache.

The invention discloses an Internet of Things system, an Internet of Things communication method and electronic equipment. The system comprises an equipment layer, an edge computing layer and a cloudservice layer, wherein the equipment layer is used for acquiring acquired data; the edge computing layer is in communication connection with the equipment layer and is used for receiving the acquireddata sent by the equipment layer and processing the acquired data to obtain a data processing result; the cloud service layer is in communication connection with the edge computing layer, receives theacquired data and / or the data processing result sent by the edge computing layer, and processes the acquired data and / or the data processing result; the cloud service layer is constructed based on ablock chain technology. The system is advantaged in that time delay caused by data transmission to the cloud service layer can be reduced, the data processing efficiency is improved, in addition, decentralized distributed storage of the cloud data in the cloud service layer can be achieved, and safety of cloud data storage is improved.

The embodiments of the invention disclose a domain name query method and a domain name query device. The domain name query method comprises the following steps: when receiving a first domain name resolution request, acquiring the predicted round-trip delay of each domain name server in M domain name servers; determining the first domain name server in the M domain name servers, wherein the predicted round-trip delay of the first domain name server is the minimum; determining the second domain name server in the M domain name servers, wherein the difference between the predicted round-trip delay of the second domain name server and the predicted round-trip delay of the first domain name server is less than a preset threshold; and sending a domain name query request to the first domain name server or the second domain name server at default probability, wherein the probability that the domain name query request is sent to the first domain name server is the maximum. The embodiments of the invention not only can adapt to dynamic network change, but also can ensure that the network delay of the domain name query request is relatively small.

The invention relates to the field of routing distribution, and discloses a data transmission method, a data transmission device and data transmission equipment based on hybrid cloud, and a storage medium, which are used for solving the problem of network delay when a user uses a network. The data transmission method comprises the following steps of: trying to receive a first data packet sent by aprivate cloud server, caching the first data packet in a client if the first data packet is successfully received, or, receiving a second data packet sent by a public cloud server if the first data packet is not successfully received, and caching the second data packet in the client; detecting connection information between the client and a mobile gateway according to a preset Internet packet explorer; when the connection state between the client and the mobile gateway is communication, accessing the mobile gateway through using a target access IP address; when the connection state between the client and the mobile gateway is not communication, sending a service request to the mobile gateway through the public cloud server; and receiving a reply data packet sent by the mobile gateway.

Network latencies are reduced by detecting a metadata access call for filesystem metadata contained in a filesystem node of remotely located filesystem. The metadata corresponding to the metadata access call is fetched when the metadata corresponding to the metadata access call is not contained in a local filesystem cache that has a hierarchical structure corresponding to a hierarchical structure of the remotely located filesystem. Metadata related to the metadata corresponding to the metadata access call from the remotely located filesystem is prefetched when the related metadata is not contained in the local filesystem cache. The metadata related to the metadata corresponding to the access call can be contained in a child node or a parent node of the node containing the metadata corresponding to the access call, or the descendants of such nodes.