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7184407 |
Detecting, reporting and mitigating hidden nodes in a wireless data network
A method for automatic hidden node detection that includes observing frame exchange sequences that conform to a MAC standard such as the IEEE 802.11 standard. The method includes detecting a hidden...
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7180866 |
Rerouting in connection-oriented communication networks and communication systems
A Private Network-Network Interface (PNNI) network including interconnected nodes is defined as a single rerouting domain (“global domain”) and the global domain is further defined by multiple...
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7177267 |
Hardware monitoring and configuration management
A transmission system is provided. The system includes a hardware monitor adapted to collect performance information about associated hardware components, a system information database adapted to...
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7177268 |
Packet distributing device
Packets of different priorities are efficiently distributed to a plurality of links of different qualities. When transmitting a low priority packet, the load on a higher quality link is examined,...
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7173909 |
Diagnostic device for a field bus with control-independent transfer of information
A diagnostic device that may be included in a superior-level application, for example as an ActiveX component with a software interface standardized for this purpose. The superior-level application...
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7173903 |
Vehicle active network with communication path redundancy
A vehicle active network ( 12 ) communicatively couples devices ( 14–20 ) within a vehicle ( 10 ). Device operation is independent of the interface ( 22–28 ) of the device ( 14–20 ) with the...
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7174192 |
Method for controlling a hands free system, radio apparatus, and hands free apparatus
A radio apparatus, to be used as a first ending node of a communication network, is connectable to a hands-free apparatus by a local radio link to form a hands-free system. A call made on the...
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7173947 |
Methods and apparatus to evaluate statistical remultiplexer performance
The present invention relates to methods and apparatus for quantitatively measuring the performance of a statistical remultiplexer. The methods of the present invention provide for generation of...
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7170853 |
Vehicle active network topologies
A vehicle active network ( 12 ) communicatively couples devices ( 14–20 ) within a vehicle ( 10 ). Device operation is independent of the interface ( 22–28 ) of the device ( 14–20 ) with the...
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7158477 |
Data communication apparatus with distributed traffic protection switching system
A data communication apparatus having a plurality of working ports for exchanging data traffic with network elements and a plurality of protection ports. The data communication apparatus further...
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7154856 |
Multiplexing apparatus and cell discard method
A multiplexing apparatus selectively performs cell discard processing in the case of congestion on the basis of a use state of the same connection formed by cells from the side of a switching unit...
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7143161 |
Tandem connection monitoring parallel processing
In a synchronous hierarchic network having multi-level tandem connection monitoring, all of the fields containing tandem connection monitoring information associated with trail terminations at a...
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7139668 |
Wire event detection
Classifying a portion of an electrical signal propagating through a conductor includes digitizing the electrical signal to provide a digitized signal, providing a plurality of stored digitized...
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7139925 |
System and method for dynamic cluster adjustment to node failures in a distributed data system
A distributed system provides for separate management of dynamic cluster membership and distributed data. Nodes of the distributed system may include a state manager and a topology manager. A state...
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7137626 |
Packet loss recovery
A method, apparatus, and system for recovering from loss of a packet.
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7136921 |
Network system, detection method and monitoring method of network entity faults, and storage medium
A monitor ( 102 ) receives a returned response message, and stores the state of the link directed to the NE that returned the message as a successful transmission, and then repeats the same...
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7130274 |
Method for detecting connection polarity of network transmission lines and associated detection circuit
A method and associated detecting circuitss for detecting and correcting a connection polarity of a network transmission line include two network clients and a network transmission line. One...
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7130275 |
Extended automatic protection switching arrangement
An automatic protection arrangement for a communication system ( 100 ) provides a working line terminal equipment ( 300 and a link ( 1 A) for transmitting bearer traffic from a number of bearer...
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7130273 |
QOS testing of a hardware device or a software client
A system for testing a software client or hardware module in a voice-over-IP (VoIP) network path includes a VoIP client, a test tool, and an analyzer. The VoIP client, connected to the VoIP...
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7126970 |
Communication system with balanced transmission bandwidth
A communication system such as a distributed packet switch, is described, including multiple nodes with bi-directional transmission links between the nodes, each link comprising of a set of...
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7126921 |
Packet network providing fast distribution of node related information and a method therefor
A reliable packet network is constructed with nodes and links where the nodes use a method for fast distribution of link state information. This permits a rapid update of the routing information at...
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7124350 |
Wireless communication method and system for detecting and correcting transmission errors
A wireless communication method and system for detecting and correcting transmission errors. The system includes at least one wireless transmit/receive unit (WTRU) in communication with a Node B....
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7120112 |
Redundancy in media stream processing
Various media stream processing systems and methods are provided. In one exemplary embodiment, a media stream processing method is provided that includes the brokering of a number of communications...
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7116634 |
TCP sequence number recovery in a redundant forwarding system
Disclosed are methods and apparatus for facilitating recovery of a data connection that was established between an active router and a host. The data connection is a type of connection that tracks...
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7113699 |
Fault forwarding in an optical network
A system and method for forwarding fault information in an optical network is disclosed. Responsive to a fault being detected at a node, the fault information is forwarded to the destination node...
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7110364 |
Optical link adjacency discovery protocol and an optical network therefor
An optical link adjacency discovery protocol is provided. The protocol includes a simple format that includes an identifier field of a local node and facility and an identifier field of an echo...
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7107353 |
Systems and methods for determining a fundamental route between central offices in a telecommunications network
The invention is systems and methods for determining a fundamental route between central offices in a telecommunications network. The invention receives a “request for service” as location...
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7103002 |
Communication management in networks having split control planes and user planes
Methods of re-establishing a connection between a radio network node and a core network having a control plane entity and a user plane entity in a communication network and of detecting faulty...
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7103052 |
Device for reassembling cell data device for circuit emulation service and method of ATM synchronization control
A device and method are disclosed for correctly restoring a read clock when there are a plurality of STM data stream transmission sources. In a CES device of an ATM communication system, ATM cells...
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7103050 |
Method and means for determining the used bandwidth on a connection
The invention relates to a method for determining the used bandwidth (CCR) on a connection ( 18 ) on which information-carrying units are transported. The duration (ET) of an arrival period, during...
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7099282 |
Determining the effects of new types of impairments on perceived quality of a voice service
Empirically derived models are used to relate user perception to objectively measurable characteristics, under a criterion of nearly perfect co-variance between predicted MOS values and the...
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7096275 |
Methods and apparatus for protection against network failures
Units of traffic are routed between nodes in a network on corresponding sets of trunks, such that the traffic is balanced between disjoint paths. A restoration process for the traffic is...
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7092361 |
System and method for transmission of operations, administration and maintenance packets between ATM and switching networks upon failures
A system and method of notifying a first communication network of a fault related to a second communication network is provided. The first communication network is connected to the second...
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7085237 |
Method and apparatus for routing alarms in a signaling server
An alarm collection and routing method using a multi-stage clock distribution scheme in a signaling server organized into a plurality of uniquely addressable shelves. The signaling server includes...
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7085225 |
System and method for providing detection of faults and switching of fabrics in a redundant-architecture communication system
A system and method of selecting a routing datapath between an active datapath and a redundant datapath for a communication device are provided. The system and method are embodied in a first step...
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7082099 |
System for managing layered network
A system manages a layered network including an upper layer and a lower layer. In this system, a fault or degraded performance on a lower layer line, which is a connection line in a lower layer, is...
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7079484 |
Management method for maintaining communications options within a private communications network
The method enables a set of services to be maintained within a private communications network even in the event of the network becoming split. It uses emergency means providing dynamic accesses...
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7079491 |
Method and node apparatus for filtering ICMP data frame
A node apparatus is provided for transmitting an ICMP data frame to a transmission source in response to an IP data frame received from the transmission source when detecting failure regarding the...
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7079535 |
Method and apparatus for real-time fault-tolerant multicasts in computer networks
The sender of a multicast in a computer network attaches an official release time to the message being multicast, asking every receiver to process the message at or after the official release time....
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7079587 |
Signal transmitter having voltage booster circuit and method of operating the same
In a radio signal transmitter, a microcomputer operates by receiving an output voltage of a battery to sequentially generate a voltage boosting control signal. This voltage boosting control signal...
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7075887 |
Measuring efficiency of data transmission
Retransmission of packets in a TCP network is measured by monitoring packets traversing bearer links between nodes and examining the sequence number within its connection of each packet. For each...
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7072676 |
Method and wireless transceiver for requesting and processing information
A method and a wireless transceiver are used for requesting and processing information. A first information query is transmitted by the wireless transceiver and information is returned by a service...
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7072305 |
Method and apparatus for analyzing a communications network link
A method and system for testing at least one link in a communications network. The system includes first and second analyzer units that are configured to test an existing link in the network....
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7061871 |
System and method for identifying errors in a video conference conducted on a packet-based network
A system and method for identifying errors in a video conference conducted on a network are disclosed. A central device includes a central agent that detects an error during a video conference...
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7058009 |
Router-level automatic protection switching
In a data packet router, a method for redirecting packets destined for a port comprises steps of monitoring port status on a continuing or periodic basis, updating a port-status table, listing port...
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7058008 |
Link capacity adjustment component
A component for adjusting the capacity of a network link between the component and another component is disclosed. The component receives a first data signal and transmits across forward channels...
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7054262 |
Line-level path protection in the optical layer
Systems and methods provide very fast protection switching while leaving selected traffic unprotected. When a link fails, only certain pre-selected paths are rerouted at the point of failure. Other...
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7046620 |
Method and network for tolerating a fault on hubs and lines
Hubs 11–14 are circularly connected with each other. The hubs 11 and 12 are supplied with electric power from the power source 1 and the hubs 13 and 14 are supplied with electric...
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7046623 |
Fault recovery system and method for inverse multiplexed digital subscriber lines
A system ( 10 ) and method are provided for restoring the flow of a data stream in the event of a link ( 28 ) failure while avoiding delays due to down time. The system ( 10 ) for passing the data...
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7043250 |
Systems and methods for forming and operating a communications network
Methods are provided for forming and operating mesh communications networks. A primary application of these methods would be for a network for interconnecting telephone central offices. Compared to...
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