146 results about "Bandwidth optimization" patented technology

According to one or more embodiments of the present invention, a network cache intercepts data requested by a client from a remote server interconnected with the cache through one or more wide area network (WAN) links (e.g., for Wide Area File Services, or “WAFS”). The network cache stores the data and sends the data to the client. The cache may then intercept a first write request for the data from the client to the remote server, and determine one or more portions of the data in the write request that changed from the data stored at the cache (e.g., according to one or more hashes created based on the data). The network cache then sends a second write request for only the changed portions of the data to the remote server.

A method and apparatus for the transparent, non-disruptable transfer of data, particularly multimedia data, through any packet-based network, such as an ATM network is provided. The method of the present invention includes the step of setting a primary path and a secondary path between nodes of a network, or of a network domain. Accordingly, when a switch or node establishes a Virtual Path (VP) to another switch with specified effective bandwidth, it also has an alternate VP that is available, although no bandwidth is actually used. The method of the present invention further includes the step of optimizing the available capacity of the system through management actions. For handling congestion and resource failures, the total effective bandwidth on each physical link is categorized in terms of idle capacity (unused or available), used capacity (for existing VPs), and spare capacity. When a resource failure occurs, the idle capacity is used for real-time switching of the VP and service is not disrupted. This is accomplished by an alarm indication management cell which is delivered when a resource problem is encountered. This management cell sets forth the secondary path and the bandwidth associated therewith. On the other hand, if idle capacity does not exist, the spare capacity is used, while the bandwidth of all other VPs is reconfigured using virtual bandwidth optimization. Therefore, service disruption does not occur. In a wireless, mobile network, the present invention monitors node movement and takes management actions on the basis of such node movement to prevent service disruption.

A device 60 for time-shifting a first signal set with respect to a second signal set, as compared to the time sequence in which they were received, includes a receiver 44B, 46B, a storage means 44C, 46C, 70, a central processing unit 66, and a user interface 72. The first signal set 38 bears a cache marker 34 that directs the CPU to store it in a local storage. The second signal set 40 bears a recall marker 36 that uniquely identifies the first signal set 38 through the cache marker 34, and that determines a sequence in which the first and second signal sets are to be output. The CPU uses the recall marker and cache marker to sequence the first and second signal sets relative to one another in time that differs from the timed relation in which they were received. By storing the first signal set in a local storage, it need be broadcast or transmitted only once, eliminating the need to re-broadcast recurring commercial advertisements and conserving bandwidth.

Systems and methods are provided to optimize bandwidth usage associated with a local network. As part of the bandwidth optimization techniques, an authentication entity may receive an indication of an access profile selected by a user of an electronic device. The authentication entity may assign the access profile to the electronic device. Accordingly, when the electronic device transmits data, a network regulation entity may process the traffic in accordance with the access profile. To this end, the network regulation entity may correspond communication sessions within the traffic to an application. The network regulation entity may then query the access profile to determine a priority for each application. When the traffic exceeds a threshold byte volume, the network regulation entity may queue lower priority communication sessions. By processing the traffic based upon a user-indicated access profile, compliance with network neutrality principles may be maintained.

Systems and methods for bandwidth optimization in a network include monitoring a state of the network, wherein the network is a connection-oriented network; utilizing analytics based on the monitoring to predict trends, create triggers, and determine updates to policy associated with the network; and performing bandwidth optimization on one or more connections based on the trends, the triggers, and the policy, wherein each of the one or more connections has one or more of a Wave Division Multiplexing (WDM) component, a Time Division Multiplexing (TDM) component, and a packet component, and wherein the bandwidth optimization finds the one or more connections with inefficient resource usages and moves the one or more connections, in one or more of time and space, to more optimal paths.

Systems and methods for bandwidth optimization in data transmission using a surveillance device are described here. In one aspect, embodiments of the present disclosure include a method for protecting data security and optimizing bandwidth. The method, which may be embodied on a system, includes computing a checksum value of a data block, storing the checksum value of the data block in a computer readable storage medium, transmitting the data block to a remote server, computing an updated checksum value of an updated data block at a subsequent time, and / or comparing the updated checksum value with the checksum value stored in the computer-readable storage medium. In response to determining that the updated checksum value is not equal to the checksum value, the updated data block can be transmitted to the remote server.

In a ring topology digital network propagation delay is reduced A master node transmits a clock signal into the network in one direction. Each slave node propagates the signal to the next slave node without regeneration until the signal is received by the master node. The amount of time the signal takes to travel around the ring, is measured and is the total ring propagation delay. The master node then transmits a clock signal in both directions to the first slave node which measures the difference in their arrival times and transmits the difference to the master node. The process is repeated for each other slave node. Based upon each difference the master node computes the propagation delay for each ring segment. The master node transmits to each slave node the corresponding ring segment propagation delay and each slave node adjusts the phase of the node's clock.

An interface between the BTS and BSC optimizes data transmitted over, for example, T1 lines to effectively increase the transmission bandwidth. The method comprises determined whether a frame of data is available for optimization. If available, the frame type is identified, the payload is extracted, and a header compiled. The payload and header are used to generate the optimized frame of data. The data stream is aggregated with non-optimized frames of data and transmitted.

Methods for the optimal allocation of bandwidth among a plurality of video-on-demand (VOD) programs available on each link of a VOD tree network, where a server at the root node of the tree network broadcasts the multiple VOD programs. Each node in the network has demands for a subset of the programs and each link connecting nodes in the network has a limited amount of available bandwidth capacity. The available bandwidth is allocated on each link optimally among all programs that are carried on that link. The bandwidth allocated to a specific program may be different on different links of the network, as the bandwidth allocated may be decreased, but not increased, from one link to the next along the paths from the root node to the destination nodes. The methods use equitable resource allocation models with a lexicographic minimax objective function. The first method finds optimal solutions while satisfying the capacity constraints on all links, tree-like ordering constraints for the bandwidth allocated to each of the programs, and lower and upper bounds on bandwidth allocation for each program. The second method finds optimal solutions to a more restrictive scheme that imposes additional constraints which require equal bandwidth allocation for a specific program on all relevant links emanating from the same node.

A method for increasing channel utilization in a video broadcast system includes receiving, at a head-end, a request for a video program from one of a plurality of subscriber stations. Determining whether the requested video program is associated with a first subset of channels representing broadcasted channels having a first subscriber viewership level greater than a threshold level, a second subset of channels representing broadcasted channels having a second subscriber viewership level less than the threshold level, and a third subset of channels representing on-demand channels having a third subscriber viewership. The first subset of broadcast channels is substantially continuously transmitted. The second subset of broadcast channels is transmitted based upon channel availability and programming assignments. The third subset of on-demand channels are transmitted from the head-end to at least one of the plurality of subscriber stations upon assigning video programming corresponding to the requesting subscriber station.

A bandwidth optimization system to optimize bandwidth usage of a cellular data network is described. This is achieved by organizing data at interactive content cache server (42) such that data and corresponding meta data about said data can be viewed and interacted with by mobile device (32) users. This enables users to download alternate content associated with other users that may be related to their interest thereby improving the cache hit rate exponentially.

A method and system are provided for remultiplexing program bearing data. The remultiplexing method and system are applicable to MPEG-2 compliant transport streams carrying video programs. A descriptor based system is used for scheduling the timely output of transport packets wherein each descriptor records a dispatch time as well as a receipt time for each transport packet. The receipt time is used for estimating program clock reference adjustments, but final program clock reference adjustment is performed in hardware in relation to the precise output timing of each transport packets. A descriptor and transport packet caching technique is used for decoupling the synchronous receipt and transmission of transport packets from any asynchronous processing performed thereon. The descriptors can also be used for managing scrambling and descrambling control words (encryption and decryption keys). Remultiplexing functions may be distributed across a network. The remultiplexer can furthermore optimize the bandwidth of transport streams by replacing null transport packets with transport packet data to be inserted into the output transport stream. Program data transmitted via asynchronous communication links is re-timed and assistance is provided for outputting program data on such asynchronous communication links to reduce a variation in end-to-end delay incurred by the program data. Remultiplexing and program specific information can be seamlessly dynamically varied without stopping, or introducing a discontinuity in, the flow of outputted transport packets. A technique is also provided for locking multiple internal reference clock generators.

A method is described for optimizing the transport of Ethernet frames in a telecommunication network over different connections having different delays, in order to avoid overflow of the receiving queues. The method includes measuring of the delays of the connections, collecting the values of the delays, defining a range of valid values, comparing the values of the delays to the defined range and carrying the Ethernet frames over the connections having the values of the delays within the defined range.

Disclosed systems and methods relate to segmented delivery of content. In one aspect, the segmentation process allows discrete segments of content to be moved through a content delivery network for reconstitution at an edge device. In addition, aspects of the disclosure provide for personalized delivery of content (e.g., advertising, etc.) to each end user and for bandwidth optimization by delivering format specific content based on the capability of an end user device. In yet other aspects, the methods and systems disclosed herein may support time-shifted viewing of live programming options and for adaptive bit rate transmission of content to user devices.

The present invention concerns a method for reducing the channel change time in a broadcast television system by encoding a termed companion service in addition to the main service. The companion service is sent along with the original service and helps the receiver to retrieve and display the new service more rapidly during the channel change process. With this solution the service is encoded and streamed in its original format, plus encoded and streamed in a low resolution format.

The invention discloses a multiple-wind-power-plant correlation modeling method based on adaptive multi-variable nonparametric kernel density estimation, and belongs to the technical field of multidimensional variable correlation research. The method comprises the following steps that: S1: establishing a multi-variable nonparametric kernel density estimation model of a wind power plant; S2: constructing a bandwidth optimization model; and S3: constructing a bandwidth solving method of the multi-variable nonparametric kernel density estimation model of the wind power plant on the basis of ordinal optimization. By use of a method, a modeling process is practical and simple, correlation among a plurality of random variables can be quickly and efficiently modelled. Compared with a traditional parametric estimation method based on a copula function, the method is higher in accuracy and applicability, and a local adaptation problem of a traditional multi-variable nonparametric kernel density estimation method is favorably solved.

The present invention provides a wind power fluctuation probability density modeling method based on nonparametric kernel density estimation. The method comprises the following steps: 1, extracting a fluctuation amount of wind power sample data by wavelet decomposition; 2, establishing a corresponding nonparametric kernel density estimation model based on a fluctuation amount sample, and then aiming at the model bandwidth selection problem, constructing a constrained bandwidth optimization model which uses a goodness-of-fit test as a constraint condition; and 3, solving the optimization model by using a constrained sequence optimization algorithm. According to the present invention, due to adoption of the wavelet decomposition method, a wind power fluctuation component can be more precisely extracted; moreover, a probability characteristic modeling method of the extracted fluctuation component is entirely driven by the sample data without performing prior subjective assumption on the probability density model, so that the method has higher modeling accuracy and applicability; and an improvement strategy aiming at the nonparametric kernel density estimation method also enables modeling accuracy and computing efficiency of the method to be effectively improved.

The invention discloses a MapReduce bandwidth optimization method which comprises the following steps: after Hadoop work is submitted, an OpenFlow controller, according to task execution node information sent by JobTracker and through a Map intermediate value routing strategy, determines nodes for carrying out a Map intermediate value merge task, updates corresponding flow entry and sends the flow entry to an OpenFlow switch; and the OpenFlow switch receives and installs the flow entry through a secure channel, then, carries out flow entry matching on the received data packets, and if behavior type for merging the Map intermediate values is matched therewith, carries out merging of the Map intermediate values. Through the combination of the OpenFlow and Hadoop, and by utilizing data handling capacity of the OpenFlow switch, the Map intermediate values, that is, the intermediate tuple data obtained after the action of a map() function, are subjected to merge processing in advance, thereby greatly relieving the problem of network congestion in the data migration process and improving Hadoop work efficiency substantially.

A method for alleviation of congestion in a mobile communications network includes detecting congested cells in the mobile communications network, identifying subscribers with active data sessions in the congested cells; and optimizing band-width usage for at least one of the identified subscribers. A bandwidth optimization system includes a network sampling interface to receive at least subscriber, cell and data session identifiers from a network data packet sampler, where the sampler identifies the identifiers from internal data traffic within a mobile communications network, and a network awareness engine (NAE) to at least cross reference the identifiers with external data traffic output by the mobile communications network to at least detect congested cells and associated subscriber data sessions emanating from the mobile communications network.

Methods and Apparatus for IO, Processing and Memory Bandwidth Optimization for Analytics Systems has been disclosed. In one implementation a plurality of cards each having one or more GPU+CPU are interconnected via RapidIO.

Systems, devices and processes are described to adapt segment requests placed by an autonomous media player during media streaming to compensate for fluctuations in the bandwidth consumed by the requested segments due to variances in the underlying video content. By providing predictive data about the bandwidth consumption of upcoming video segments, client devices can adapt requests for future segments accordingly. Further, predictive consumption data can be shared between players operating within shared bandwidth to assist players needing additional bandwidth for upcoming video sequences.

The invention relates to an algorithm parallel processing method and system based on a heterogeneous many-core processor, and the method comprises the steps: taking a code segment with large operationtime consumption in a serial program as a parallel computing object, carrying out the task division according to the characteristics, determining the task division of a master core and a slave core array, handing over the time-consuming computing to the slave core array for execution, by each slave core, actively acquiring a task and data used for calculation from the main memory and returns a calculation result to the main core, by the main core, updating the main memory data in an asynchronous serial mode so as to avoid data read-write errors caused by data dependence, meanwhile, for the problem of time consumption of master-slave core communication, packaging a single data item in a structural body to realize data packaging, and setting a data master memory address 256B pair boundary of a master core to realize that the single data copy granularity is not less than 256B, so that the bandwidth of a single core group is utilized to the maximum extent, and the data transmission performance is optimized, consumption hiding of communication time is realized by using a double-buffer mechanism, and the parallel efficiency is improved.

The embodiment of the invention discloses a block chain consensus method and device with capable of optimizing bandwidth and electronic equipment, which are applied to a block chain network comprisinga plurality of block chain nodes, and the method comprises the following steps: each consensus node in the block chain network receives a proposal and carries out pre-voting; each consensus node receives a pre-voting result sent by other consensus nodes in the block chain network; each consensus node judges the received pre-voting result to generate a pre-submitting result; the pre-submission result is broadcast; each consensus node judges the pre-submission result and packages the proposal pre-submission result achieving the consensus into a consensus proof; the proposal node of the next height submits a proposal and the consensus proof; and the next round of consensus is performed on the proposal and the consensus proof. According to the method provided by the embodiment of the invention, the bandwidth resource is optimized, the waste of the bandwidth resource is avoided, and the bandwidth utilization rate is improved.

Systems and methods are provided to optimize bandwidth usage associated with a local network. As part of the bandwidth optimization techniques, a network regulation entity may maintain a plurality of usage statistics for a plurality of electronic devices. These usage statistics may be compared to an access profile to determine whether the local network is being used in a way anomalous with the access profile. If there is an anomalous usage condition present, the network regulation entity may generate a notification to inform a user of an electronic device as to the anomalous condition. Accordingly, when a user of the electronic device interacts with the notification, the electronic device may present an interface that enables the user to remedy the anomalous condition. Thus, because the remedial action is generated at the user's direction, compliance with network neutrality principles may be maintained.

The invention provides a method for realizing remote rapid backup by utilizing a common Internet network. The method is characterized in that a fingerprint technique is adopted to identify a specific file from the redundant backup of the whole enterprise, so that the transmission and storage of redundant data are not required, and the quantity of data transmitted on a wide area network is greatly reduced. The method comprises the following steps of: only installing lightweight agent software for a small-size remote branch structure; for a large-middle-size remote branch structure, distributing a storage pool which consists of a wave server and a storage array and is used for storing the data of the branch structure; distributing a large-size storage pool in a headquarter backup center; carrying out global repeated data deletion on the data of the remote branch structure and then transmitting to the headquarter backup center through the wide area network; transmitting the data of the backup center to a remote disaster tolerance center through a broadband optimization mode so as to achieve the remote concentrated backup and the remote disaster tolerance of enterprise data at the wide area network environment; and locally implementing global unique file and field section identification by the lightweight agent software installed on a client. According to the invention, increment data just need to be transmitted on the network, so that the backup broadband is reduced by 50% or above.

A method of bandwidth optimization in a non-volatile memory system includes: retrieving hard data bits; generating soft information from the hard data bits; applying a lossless compression to the soft information for calculating syndrome bits; and executing a low density parity check (LDPC) iterative decode on the hard data bits and the syndrome bits.

The invention relates to a bandwidth optimized multimode fiber and a manufacturing method thereof. The multimode fiber comprises three parts, including a fiber core, a quartz glass cladding and a coating with graded index profile. By adopting the method of optimizing the impurity gas flow curve, the refractive index profile parameter of a fiber core is controlled to optimize the optimal bandwidth of the fiber at the communication window of 850nm.The largest change of the differential mode time delay of the fiber is less than 0.22ps / m, the over-filled launch bandwidth is larger than 3,500MHz.km and 500MHz.km respectively at 850nm and 1,300nm and the valid mode bandwidth is larger than 4,700MHz.km and 500MHz.km respectively at 850nm and 1,300nm.The multimode fiber of the invention decreases the chromatic dispersion between modes and the time delay and increases transmission bandwidth, thereby not only meeting the application requirement of a low speed network, but also meeting the application requirement of a gigabit high speed broadband network.