2815 results about "Transmission Control Protocol" patented technology

A packet-centric wireless point to multi-point telecommunications system includes: a wireless base station communicating via a packet-centric protocol to a first data network; one or more host workstations communicating via the packet-centric protocol to the first data network; one or more subscriber customer premise equipment (CPE) stations coupled with the wireless base station over a shared bandwidth via the packet-centric protocol over a wireless medium; and one or more subscriber workstations coupled via the packet-centric protocol to each of the subscriber CPE stations over a second network. The packet-centric protocol can be transmission control protocol/internet protocol (TCP/IP). The packet-centric protocol can be a user datagram protocol/internet protocol (UDP/IP). The system can include a resource allocation means for allocating shared bandwidth among the subscriber CPE stations. The resource allocation is performed to optimize end-user quality of service (QoS). The wireless communication medium can include at least one of: a radio frequency (RF) communications medium; a cable communications medium; and a satellite communications medium. The wireless communication medium can further include a telecommunications access method including at least one of: a time division multiple access (TDMA) access method; a time division multiple access/time division duplex (TDMA/TDD) access method; a code division multiple access (CDMA) access method; and a frequency division multiple access (FDMA) access method.

The first data network includes at least one of: a wireline network; a wireless network; a local area network (LAN); and a wide area network (WAN). The second network includes at least one of: a wireline network; a wireless network; a local area network (LAN); and a wide area network (WAN).

Firewalls and network address translators (NAT) provide many advantages for client and the Internet itself, however, these devices break many existing transmission control protocol (TCP)/Internet Protocol (IP) applications, since they conceal the identity of IP clients (i.e., peers) and block transmission control protocol (TCP) call setup requests. Firewalls and NATs make it impossible for one TCP peer to discover another and establish a connection. Embodiments of this invention provides a system and a protocol to enable two TCP peers that exist behind one or more firewalls and NATs to automatically setup a true peer-to-peer TCP connection and exchange data without making changes to the firewall or NAT devices or existing TCP-based applications. In embodiments of this invention, the synchronization between the blind TCP peers is achieved using a system that consists of a registration server, an agent application, and a virtual network interface that together relay and replicate the control signals between the two TCP peers. In addition, embodiments of this invention are also used to traverse the NAT and establish a bi-directional peer-to-peer TCP connection in the firewall.

Bi-directional communications via TCP ("Transmission Control Protocol")/IP ("Internet Protocol") between an HTML client program (i.e. "web browser") and the linked or embedded HTML server ("Hypertext Markup Language") of a Building Automation System ("BAS") are used to provide an authorized user with access to the interactive graphical panels of the BAS allowing the user to, for instance, monitor, control, configure and interact with the BAS or multiple BAS's.

A new Fast Recovery Plus (FR+) mechanism, and associated method, for wireless and/or mobile network applications to control data flow and avoid network congestion in a TCP/IP packet-switched network.

The present invention comprises systems, methods, and means for sending data across a network. Intelligent Image Distributions (IID) systems and methods are also disclosed. Systems, methods, and means for a HawkNet, a transmission control protocol, are likewise disclosed. A description of such systems handling DICOM radiology studies is presented along with a complete system for handling such studies.

An estimate of a portion of network traffic that is nonconforming to a communication transmission control protocol is used to signal that a distributed denial of service attack may be occurring. Traffic flows are aggregated and packets are intentionally dropped from the flow aggregate in accordance with an assigned perturbation signature. The flow aggregates are observed to determine if the rate of arrival of packets that have a one-to-one transmission correspondence with the dropped packets are similarly responsive to the perturbation signature. By assigning orthogonal perturbation signatures to different routers, multiple routers may perform the test on the aggregate and the results of the test will be correctly ascertained at each router. Nonconforming aggregates may be redefined to finer granularity to determine the node on the network that is under attack, which may then take mitigating action.

Methods and apparatuses for improved data transmission control protocols. Acknowledgment streams are used by a sender process to generate various estimates of eligible transmission rates that are fair to other processes competing for bandwidth across a common network. In addition, the acknowledgment streams are used in conjunction with various other standard transmission control protocol metrics to adapt a filter for use on the rate estimates. Additional improvements in throughput may no be had by measuring the overall capacity of the computer network using packet pair dispersion measurements and adaptive network probing. In addition, the methods may be adapted for both packet transmission and video streaming applications.

A home automation system using an infrared (IR)/radio frequency (RF) integration remote control module based on a network. At least one IR/RF integration remote control module (100) is disposed at a predetermined location of a home automation region. The IR/RF integration remote control module (100) with a wireless interface function integrates an RF modulation/reception/transmission function and an IR modulation/reception/transmission. A set-top box (200) is appropriately disposed so that it can carry out an interface function for controlling the IR/RF integration remote control module (100) and a wired/wireless Internet access function. The set-top box (200) receives various control commands over an Internet network using transmission control protocol/Internet protocol (TCP/IP) and controls the IR/RF integration remote control module (100). Even though various pieces of equipment using the conventional IR reception/transmission scheme or a new electronic product equipped with an RF module is added to the home automation system using an RF modulation scheme, an automation operation and a bidirectional control operation based on the integrated IR and RF transmission scheme can be appropriately carried out. Thus, the home automation system and method can be cost-effectively and conveniently implemented.

A roaming method and system using a SUPL (Secure User Plane Location)-based location information system, are provided. According to an aspect of the present invention, the method can include the steps of establishing a transmission control protocol (TCP) connection between a target terminal and a visited network associated with the target terminal, if position information of the target terminal is requested; and obtaining, by the target terminal or a location server in the visited network, the position information of the target terminal, through the established TCP connection and without a TCP connection between the target terminal and a home network of the target terminal.

A TCP/IP-based software application client/server communication channel construction mechanism is presented. The mechanism constructs a dedicated bi-directional data transmission for a single client/server session. The server software, running on a server host computer, provides session-based data services to one or more software clients. The client process supports one or more execution environments including: text-based scripting, Java or ActiveX components. The invoked code executing within the client computer detects the most attractive execution environment available within its execution environments, and uses the services of that execution environment client process to establish an optimal communication channel back to the server software process. Depending on the execution environment(s) available to the invoked code, the communication channel may be: (a) a content-independent, bi-directional transmission control protocol (TCP) connection, or (b) a content-dependent TCP connection, such as a TCP connection supporting only a single HTTP request/response pair.

A data packet header including an internet protocol (IP) header, a remote direct memory access (RDMA) header, and a transmission control protocol (TCP) header, wherein the RDMA header is between the IP header and the TCP header.

A firewall rule generation method, a load balancing rule generation method, and a wrapper generation method, for an Information Technology (IT) system, associated computer program products, and an associated processes for integrating computing infrastructure. The firewall rule generation method generates firewall rules allowing data transmission between a computer and a client, and subsequently assigns the firewall rules to firewalls of the IT system. The load balancing rule generation method assigns a load balancing mechanism to a load balanced group to which execution of an application is assigned, wherein the load balanced group has servers therein. For a client and computer having a communication protocol therebetween that is not allowed by a security policy, the wrapper generation method generates a communication protocol wrapper that opens a Transmission Control Protocol (TCP) connection between the client and the computer such that the TCP connection is allowed by the security policy.

There is disclosed a system and method for choosing between different Communication Initiation Request (CIR) channels in a mobile communications system when there are multiple CIR channels amongst which to choose. Additionally, there is disclosed a system and method for exploiting a Transmission Control Protocol (TCP) connection usage pattern that is characterized by periods of inactivity.

In a method for the transmission of data packets (D) from a transmitter (TR) to a receiver (RE) identification of transmitted data packets are stored. Defective data packets (D) are detected by the receiver (RE), status messages (S) which request defective data packets for retransmission are sent from the receiver (RE) to the transmitter (TR) and retransmissions of requested data packets are performed according to the status messages (S). The transmitter (TR) evaluates a first status message (S11) with an identification of at least one first requested data packet and retransmits the first data packet. The transmitter (TR) then initializes a timing unit according to the retransmission of the first data packet, wherein the timing unit or a threshold for the timing unit is attributable to the first data packet. When the transmitter evaluates a further status message (S12) and detects at least one further data packet that is requested for a retransmission, it selects the further data packet if the timing unit has reached the threshold or if the identification of the further data packet is different from the identification of the first data packets. Only the selected data packets are retransmitted. A transmitter and software programs embodying the invention are also described.

Methods, apparatuses and systems directed to facilitating load balancing and bandwidth allocation in wireless mesh networks. Generally, according to one implementation of the present invention, routing nodes implement a contention-based media access mechanism and self-allocate bandwidth within a wireless mesh network by dynamically modifying one or more contention-based transmission control parameters. The routing nodes determine a hop count and adjust one or more contention parameters based at least in part on the hop count.

A method is provided for transmitting data, wherein control packets are given priority with respect to application data packets. In general, this is accomplished by establishing a separate, distinct link flow over which only control packets (e.g., TCP control packets) will be transmitted. A higher priority is associated with this link flow. In addition, the reliability of control packets sent over the dedicated link flow can be improved upon by increasing the number of retransmissions associated with the control packets and/or decreasing the window of time before the retransmissions are sent. A system, mobile terminal, network entity, and computer program product for implementing the method are also provided.

The invention relates to a method for controlling overload in a packet switched network, especially in a network where Transmission Control Protocol (TCP) is used as the transport layer protocol. In order to inform the traffic source at a very early stage that the network is getting overloaded or congested, duplicate acknowledgments are transmitted towards the traffic source when the measured load level exceeds a predetermined threshold.