1230results about How to "Improve bandwidth utilization" patented technology

A method and system for "selective" tunneling of streaming data from a server to a client in a computer network having one or more network segments. The server has a tunneler utility, and the client has a receiver utility. The receiver utility first attempts to detect if a given data stream is available via IP multicast on the network segment supporting the client. If not, then the receiver utility issues a request for a IP unicast stream. This request is serviced by the tunneler utility. The tunneler utility re-broadcasts the IP multicast feed using IP unicast to send the data stream directly to the requesting user and/or to a repeater utility. The receiver utility then receives and processes the data stream for output to the end user. Alternatively, the receiver application, or a network administrator, launches the repeater utility, which then converts the IP unicast stream back to IP multicast format for re-broadcast over the network segment to other clients.

A quality of service (QoS) station is disclosed containing a point coordinator (PC) for a basic service set (BSS) in a wireless LAN. The PC station includes a QoS management entity (QME) and an admission control entity (ACE). The QME receives at least one end-to-end QoS message that characterizes a user application, such as a voice call, a video call, a data call and a multimedia call. The at least one end-to-end QoS message includes at least one QoS parameter set that is expressed at layer 3 and higher of an ISO/IEC basic reference model of Open Systems interconnection (OSI) (ISO/IEC 7498-1) and is to be passed down to layer 2 of the PC-station for enabling QoS traffic transport of the application. The ACE performs an admission control decision relating to the application based on the at least one end-to-end QoS message characterizing the application. The ACE reserves a resource based on a QoS parameter set contained in the end-to-end QoS message. The ACE can be part of the QME and can include a resource control module that performs at least one admission control decision based on resource permission, and a policy control module that performs at least one admission control decision based on policy permission.

Methods and systems for rate-based flow control between a sender and a receiver are disclosed. A receiver performs TCP-like flow control calculations based on packets received from a sender. The receiver calculates a transmission rate and forwards the transmission rate to the sender. The sender sends packets to the receiver at the rate calculated by the receiver. Thus, rather than having sender-based flow control as in TCP, the receiver controls the rate at which packets are delivered.

Systems and methods for connecting and configuring a communication network are described. A network includes a first router; a tie-line having a plurality of full duplex dedicated router interconnects connected to said first router; a second router connected to said plurality of full duplex dedicated router interconnects; a first user connected to said first router with a first full duplex loop; and a second user connected to said second router with a second full duplex loop. The systems and methods provide advantages in that bursty control information can be multiplexed with time sensitive laminar data.

A wavelength division multiplexed optical network has a restoration process to re-route one or more of the wavelengths, by dynamically determining possible restoration routes, and re-routing each wavelength along a chosen one of the possible restoration routes. A distributed dynamic search for restoration routes down to the optical layer, for wavelengths, gives faster and more scalable restoration than reconfiguring routing tables and enables much better utilisation of bandwidth than using predetermined restoration paths.

The present invention is to provide a method and device which can determine current available bandwidth for each Transport Control Protocol (TCP) connection and adjust window size dynamically according to the available bandwidth to achieve high network utilization and efficient flow control in the same time without the need to buffer any received TCP packets, which can work with and without support of large window option. The device classifies incoming traffic into several groups (public and private), monitors and allocates the available bandwidth for each group. To enable flow control, the device also records the initial window size value for each connection and compares it with the original window size value for a newly received TCP packet. If the original window size value received from TCP receivers changes, the device varies the modified window size accordingly to enable efficient flow control in the same device as well.

Certain example embodiments relate to a framework that helps address dynamic scalability and in-order processing of payloads, e.g., pertaining to B2B and/or other transactions. A receiver and/or sender is/are able to dynamically and/or statically provide an executable to an intermediary entity (e.g., a central payload processor or CPP) to process and/or otherwise transform payloads, en-route. This arrangement advantageously provides a very efficient way of delivering ordered content, especially when the content is extremely large. Cloud processing and/or storage facilities may be implemented in certain example instances, parallel sending and/or receiving may be provided, etc., in addressing issues relating to how to send large amounts of data over large distances to possibly multiple recipients.

The invention discloses a block device thin-provisioning method for log mapping. The method comprises the step of hard disk data distribution, wherein storage resources are formatted, and resource pooling management is carried out on hard disk data distribution so as to support thin-provisioning resource allocation and storage and management of log mapping information, the step of thin-provisioning resource management, wherein on the basis of a hard disk with pooled resources, the data are sequentially written into a next free resource of the hard disk in a writing on-demand allocation mode of the storage resources, and mapping information corresponding to write operation is generated; the step of mapping information logging, wherein logging storage is carried out on the mapping information of the write operation according to an additional allocation mode, and on the basis of an asynchronous updating mode, the mapping information is amended so as to achieve data writing of the multi-user and multi-virtual-volume concurrence sequence.

A method for MPLS link protection pre-builds backup LSP. When the LSP breaks down, it can redirect the LSP to the backup LSP within the minimal time and rearrange an auxiliary LSP after breaking down for a default time. By the guiding and the rearrangement, the method prevents the service of the MPLS from being unavailable when the MPLS breaks down and optimizes the utilization of the MPLS resources.

The invention relates to methods for communicating within a communication system when re-configured from a source to a target uplink/downlink configuration. The invention is also providing mobile station for performing these methods, and computer readable media the instructions of which cause the mobile station to perform the methods described herein. Specifically, the invention suggests to perform PUSCH transmissions in response to Downlink Control Information, DCI, transmissions such that the source uplink/downlink configuration is applied to PUSCH transmissions relating to DCI transmissions received up to and including subframe N−6, a predefined uplink/downlink configuration is applied to PUSCH transmissions relating to DCI transmissions received during subframes N−5 to N−1; and the target uplink/downlink configuration is applied to PUSCH transmissions relating to DCI transmissions received from subframe N onward.

The invention discloses a method for transmitting public data based on a physical downlink shared channel. The method for transmitting the public data comprises the following steps: an evolution type base station (eNB) indicates the allocated resource blocks in corresponding downlink control information (DCI) on a physical downlink control channel (PDCCH) for all user equipment (UE) needing to receive the public data so as to transmit the public data; the eNB transmits the public data through the resource blocks allocated by the DCI on a physical downlink shared channel (PDSCH); and the UE receives the public data from the PDSCH when the resource blocks allocated by the DCI are used for transmitting the public data according to the indications in the DCI. The invention also discloses a system for transmitting the public data based on the PDSCH; and by means of the scheme disclosed by the invention, a large amount of public data of the same content, which are transmitted through special signalings of different UE, is reduced, the copies of special signalings of the same content are reduced, and the system resource is saved.

A method for allocating a set of time slots belonging to a common time division multiple access (TDMA) channel to a network of transceiver nodes is provided. The method includes the steps of dividing the set of time slots into a plurality of time slot sub-sets; defining for each transceiver node a common function that assigns one time slot sub-set of the plurality of time slot sub-sets to each point in space, where each point in space is identified by a unique set of space coordinates; and performing the following steps for each one of the transceiver nodes: periodically identifying a set of space coordinates; and allocating to each transceiver node time slots belonging to the time slot sub-set assigned by the common function to the point in space identified by the periodically identified set of space coordinates. The method further includes the step of resolving time slot allocation conflicts occurring when at least two transceiver nodes are allocated time slots belonging to an identical time slot sub-set and the distance between the at least two transceiver nodes is less than a predetermined distance threshold. This step includes allocating to each one of the at least two transceiver nodes time slots belonging to a different time slot sub-set of the identical time slot sub-set. The periodically identified set of space coordinates corresponds to the current set of space coordinates for each one of the transceiver nodes.

The invention discloses a bandwidth control method based on software-defined networking and oriented to different types of flow. By means of the method, the different types of flow are identified, intelligent bandwidth allocation schemes are provided, and the problems that as for a traditional method, control is complex and response is slow are solved. Under a SDN framework, bandwidth control of the whole network is achieved through a controller, an implementation process is simple and efficient, the bandwidth utilization rate is increased effectively, differential bandwidth allocation is provided intelligently, and the bandwidth control method is applied to bandwidth control oriented to the different types of flow in the SDN.

The invention discloses a memory arbiter system and implementation method that support multi-bus and multiple types of memory to solve the problem that multiple bus can not access multiple types of memory in existing technology. The invention includes: n bus main modules, the m memories, m arbiters which are connected to m memories correspondingly, the read data processing modules that are connected to n bus main modules, any memory arbiter module of the m memory arbiter modules can receive the memory access request issued by the n bus main modules; the memory arbiter module arbitrates the memory access requests and output the result; write to the memory corresponding to the memory arbiter; the read data processing module receives the arbitration results of m memory arbiter modules, and outputs the read data of corresponding memory to n bus main module according the arbitration result. It makes the multiple buses have access to multiple types of memory.

The invention discloses an explicit congestion control method based on bandwidth estimation in a high-bandwidth delay network, which comprises the following steps of: calculating the current available bandwidth of a network by a TCP (Transmission Control Protocol) sender through observing an ACK (Acknowledgement Character) receiving interval, loading a router by a packet header ECN (Explicit Congestion Notification) 2bits information feedback network, carrying out network state judgment by the sender through explicit feedback information and estimated available bandwidth values, and adjusting a congestion mechanism according to a judgment result. The congestion is judged by combining end-to-end feedback and router explicit feedback, i.e. finer congestion information is given by using the bandwidth estimation values based on the explicit feedback of coarseness, thus an algorithm ensures high congestion feedback precision while reducing the explicit feedback overhead and improving the protocol popularization, and improves the efficiency and the convergence rate of the protocol.

The invention relates to a reliable transmission acceleration method facing networks with high error rate and long delay characteristics, belonging to a reliable end-to-end transmission method of internet. In the invention, reasons that the network loses packages are distinguished according to the following method on the basis of a FAST TCP protocol: when a sending end receives 3 repeated ACK packages, the difference value of the transmission speed of a previous RTT and the transmission speed of a present RTT can be determined, when the transmission speed of the present RTT is larger than thetransmission speed of the previous RTT, the network does not have congestion, and the reason for losing package is link error; and when the transmission speed of the present RTT is greatly smaller than the transmission speed of the previous RTT, then the network can have congestion, and the package loss can be determined to be caused by network congestion. Calculated RTT can accurately and timelyreflect the current network status through the invention, thereby the reflection sensitivity of a congestion window of the sending end to the network status can be enhanced.

A connection controlling method of integrating a time synchronous code division multiple access with a automatic-organizing network belongs to the mobile communication field of the communication technology, based on keeping the unitive air interface of TD-SCDMA honeycomb network physic frame invariable construction, the method is a multi-channel synchronization connecting control method based on the preset pattern and distributing pattern control, the time span resource is divided into the control channel and the data channel by the OVSF (Orthogonal Variable Spreading Factor), thus improving the time span reusability through terminal to terminal status to expose the terminal problem, the method maintains the time span status of node within two jumps time span, and realizes the conflict-free wireless connection within two jumps time span; thereby solving the problems of realizing the conflict-free visit time span and performing the reliable alternation communication under integrating network and multi-communication modes.

Providing high availability multi-way conferencing. Separate signaling and media components may be provided within an MCU or among a cluster of MCUs. A signaling server may control signaling aspects of a conference while a media server may provide media support for the conference. In the event of media server failure, the signaling server may assign a new media server to provide media support for the conference. A backup signaling server may also monitor the signaling server and may provide signaling support for the conference in the event of signaling server failure.

Disclosed are a load balance method and a load balance system. The method comprises the following steps that the current access proportion and the number of loads of each server cluster in a corresponding network region are acquired; the access proportion of each server cluster is adjusted according to a preset threshold value of server clusters, the number of loads of each server cluster and the current access proportion; received user requests are led to corresponding server clusters according to the adjusted access proportion of each server cluster. Due to the adoption of the scheme of the load balance method and the load balance system, the user requests can be reasonably allocated to ensure that the loads of each server cluster are in a relatively balanced state, and therefore bandwidth utilization ratio can be reasonably improved, and service quality of network services can be improved.

The invention relates to the optical communication techniques and discloses a method and a device for transmitting low-speed business signals in an optical transmission network, which leads the low-speed business signal to be mapped onto the optical transmission network with high bandwidth utilization rate, can provide a flexible scheduling mechanism and an end-to-end performance management mechanism in a level of the low-speed business signal. The method and the device for transmitting the low-speed business signal in the optical transmission network adopt a GFP mapping method for mapping the low-speed business signal (GE/FC) to an ODUGE signal which is suitable for OTN transmission; the method and the device adopt an asynchronous or synchronous multiplexing method for multiplexing the ODUGE signal in multiple ways to one-way ODUk signal; the method and the device use the mapping from ODUGE to ODUk and an ODUGE cross network for implementing the on-line and off-line business in the level of the low-speed business signal .

The invention discloses a method and a system for implementing a cloud computing distributed network based on OpenFlow. The method comprises the following steps that a cloud computing network platform sends a message notification to a virtual switch and/or an OpenFlow switch; when the virtual switch on a computing node or a network node receives the message notification, the virtual switch issues flow tables used for indicating input and output of traffic of a virtual machine; and when the OpenFlow switch receives the message notification, according to configuration data, issuing the following seven flow tables including a flow table used for processing a broadcast message, a flow table used for recognizing the network, a flow table used for generating two-layer forwarding information, a flow table used for filtering of a security group, a flow table used for generating three-layer distributed forwarding information, a flow table used for filtering of a firewall and a flow table used for forwarding.

An embodiment of a system and method that uses inline measurements to probe available bandwidth for a transmission control protocol, and adaptively sets a slow-start threshold according to the available bandwidth. The method includes initializing a congestion window “cwnd,” sending cwnd packets, estimating an available bandwidth for the cwnd packets. The congestion window cwnd is set to a higher number, and the higher number of further packets is sent if the available bandwidth is greater than a first threshold level. The available bandwidth is re-estimated for the higher number of the further packets, and a soft start threshold “ssthresh” is set to the re-estimated available bandwidth. A statistical measure is calculated for the re-estimated available bandwidth, and the congestion window cwnd is set equal to ssthresh if a ratio of the statistical measure to the re-estimated available bandwidth is less than a second threshold level.