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Nortel Networks Limited Patents
Assignee:
Nortel Networks Limited
Address:
St. Laurent, Quebec, CA
No. of patents:
2624
Patents:


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Patent Number Title Of Patent Date Issued
7072581 Apparatus and method for signal recognition within WDM optical nodes July 4, 2006
The invention allows the checking of the internal performance of a cross-connect for optical networks with respect to both signal performance and proper connections. In a network comprising a number of interconnected cross-connect devices a spare output line of each cross-connect dev
7072336 Communications using adaptive multi-rate codecs July 4, 2006
A communications network includes a data network that is coupled to a wireless access network and other devices. The wireless access network enables access by mobile stations of the data network. Each mobile station, and optionally, one or more of other devices coupled to the data ne
7072319 Method and system for optimally allocating orthogonal codes July 4, 2006
A method for allocating orthogonal codes, whereby the product of a number of active users in the system and the average number of sectors servicing each user is determined, and sufficient orthogonal codes are allocated to service the product of F and the optimal number of active users in
7072307 Hybrid ARQ schemes with soft combining in variable rate packet data applications July 4, 2006
A system and method for transmitting high speed data on fixed rate and for variable rate channels. The system and method provides the flexibility of adjusting the data rate, the coding rate, and the nature of individual retransmissions. Further, the system and method supports partial sof
7072304 Network path selection based on bandwidth July 4, 2006
Determining a predetermined number of paths from a source node to a destination node in a network with nodes interconnected by links having metric values. A path between the source node and a current node is determined and expanded using selected links connected to the current node.
7072293 Load sharing/trunking in a communication device July 4, 2006
A method and apparatus is described which pertains to load sharing/trunking in a communication device used in unicast and/or multicasting interchange of information. A plurality of available ports in the interface cards of the device is identified. More than one port is selected to b
7069650 Method for reducing the number of layers in a multilayer signal routing device July 4, 2006
A technique for reducing the number of layers in a multilayer signal routing device is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for reducing the number of layers in a multilayer signal routing device having a plurality of electrically
7069646 Techniques for reducing the number of layers in a multilayer signal routing device July 4, 2006
Techniques for reducing the number of layers in a multilayer signal routing device are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method wherein the multilayer signal routing device has a plurality of electrically conductive signal path lay
7068935 Techniques for dilating and reverse dilating optical channels in an optical system June 27, 2006
Techniques for dilating and reverse dilating optical channels in an optical system are disclosed. In one particular exemplary embodiment, a technique for dilating optical channels may be realized as a method for dilating optical channels in a system having W optical frequencies. The
7068679 Asynchronous payload mapping using direct phase transfer June 27, 2006
The present invention involves the passing of clock information from a point where a tributary payload is mapped into a carrier to a point where a tributary payload is de-mapped from the carrier. A synchronization signal is generated at the mapping end. Rather than sending clock phase
7068655 Network address and/or port translation June 27, 2006
A method and apparatus for communicating data units (e.g., Internet Protocol or IP packets) between devices on one or more networks includes storing address and/or port translation information, and receiving a data unit having a source address and port and a destination address and port.
7068641 Telephony and data network services at a telephone June 27, 2006
A packetised data network includes IP telephones (ITs) and a network intelligence (NI). All of the keys of each IT are "soft" keys (i.e., they have no fixed function). The NI associates a configuration data structure with the IT which correlates the keys with functions, and, based on thi
7068623 Communicating traffic over a wireless channel in a mobile communications system June 27, 2006
A mobile communications system includes a radio access network, such as an Enhanced General Packet Radio Service (EGPRS) network, in which mobile stations are able to enter into a discontinuous transmission (DTX) mode. During DTX mode of a first mobile station that is allocated a channel
7068608 Automated method for connection discovery within consolidated network elements June 27, 2006
An automated method of detecting, and provisioning connections between interconnected nodes in a consolidated network element involves sending messages between the nodes. The messages are inserted into data frames sent from respective transmit ports through inter-node links, to respe
7068189 Location and event triggered notification services June 27, 2006
The present invention provides for delivering information, such as a notification or other content, to a select communication device when defined event and location criteria are satisfied. A profile is established to define the event and location criteria along with a method for deli
7065186 Telephone based access to instant messaging June 20, 2006
The present invention allows Internet instant messaging to be accessed via a telephone. Instant messaging access from any telephone in the world may be provided via a telephone messaging system. Alternatively, access can be embodied independently as a stand-alone telephone service, for e
7065143 Method and design for increasing signal to noise ratio in xDSL modems June 20, 2006
A DSL modem comprises an additional transformer and additional coils on a coupling transformer to couple a received signal on a transmission line to a receive path without loss due to an active impedance. The ratio of windings on the coils allows gain to be introduced to improve the sign
7065103 Hyper-concatenation across multiple parallel channels June 20, 2006
A signal processor is adapted for aligning two or more hyper-concatenated data streams, each data stream being conveyed within a respective parallel channel and having substantially equivalent bit and frame rates. The signal processor comprises a respective channel processor for each
7065042 Aggregating filters June 20, 2006
Access is provided to a resource on a network by installing instructions on the network that define a fixed level of access to the resource. The instructions are modified to change the level of access to the resource. The instructions may be a filter that is installed on a device on the
7062554 Trace monitoring in a transport network June 13, 2006
An apparatus for monitoring a path or section trace identifier. The apparatus receives the trace identifier and subjects it to a transform algorithm to produce a transformed trace identifier. The apparatus then compares the transformed trace identifier with a correspondingly transfor
7062165 Receiver monitoring and optimization using forward error correction information June 13, 2006
A data regenerator for regenerating a data signal, including a convertor for converting a received data signal into a binary data signal in dependence on conversion parameters, an error corrector for correcting errors in the binary data signal based on error correction code contained
7061938 Parallel data bus integrated clocking and control June 13, 2006
A data bus is provided having both a synchronous clock and a channel of data control information integrated in a single signal path. For a data bus having a particular bit time, the integrated clock and control signal has clock high and low time in units equal to one bit time. One edge o
7061910 Universal transfer method and network with distributed switch June 13, 2006
A method and a network for a universal transfer mode (UTM) of transferring data packets at a regulated rate are disclosed. The method defines a protocol that uses an adaptive packet header simplify packet routing and increase transfer speed. The protocol supports a plurality of data
7061898 System and method for time slotted code division multiple access communication in a wireless com June 13, 2006
A method and apparatus for assigning a time slotted code division multiple access carrier for wireless reverse link communication between a device and a base station. One or more performance characteristics corresponding to the device are determined. A code division multiple access sprea
7061854 Efficient OFDM communications with interference immunity June 13, 2006
The present invention relates to employing OFDM modulation in combination with spatial diversity and space-time block coding to provide high data rates and exceptional interference immunity. For transmission, quadrature modulated data is encoded in space and time to create individual ser
7058572 Reducing acoustic noise in wireless and landline based telephony June 6, 2006
Acoustic noise for wireless or landline telephony is reduced through optimal filtering in which each frequency band of every time frame is filtered as a function of the estimated signal-to-noise ratio and the estimated total noise energy for the frame. Non-speech bands and other spec
7058368 Adaptive feedforward noise cancellation circuit June 6, 2006
A method and apparatus for noise cancellation in communications systems. The method is applicable in situations where an interfering signal or noise must be cancelled within a specified bandwidth. A sample of the interfering signal is used to synthesize a cancellation signal which is
7058175 Digital switching system with shared analog line June 6, 2006
An auxiliary connection mechanism for allowing a Digital Switching System (DSS) to share an analog line with an analog device (via an auxiliary device port) is disclosed. The auxiliary connection mechanism includes a pair of relays for releasably connecting the auxiliary device port and
7058085 Method and apparatus for transmitting data over a network within a specified time limit June 6, 2006
A radio link protocol for a communications system ensures that delivery of Internet protocol data packets occurs within a set delay bound for the packets, in order to satisfy specified quality of service levels. Data packets arriving at a transmitter are subdivided into data blocks. As
7058077 Flexible frame structure for a CDMA wireless network June 6, 2006
A flexible frame arrangement for a CDMA wireless communications network is disclosed. A signal for transmission in the network includes several frames for transferring data between network nodes. At least one of the frames includes a hierarchical sub-frame structure having a physical
7058068 Session initiation protocol based advanced intelligent network/intelligent network messaging June 6, 2006
A method and system enables distributed transaction oriented telephony functionality for telephony services in a broadband packet network. Exemplary distributed transaction oriented telephony functionality includes Intelligent Network (IN) and Advanced Intelligent Network (AIN) funct
7058008 Link capacity adjustment component June 6, 2006
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 of the network link a plurality of second data signals carrying the data of the first da
7054557 Technique for routing data within an optical network May 30, 2006
A technique for routing data within an optical network having a plurality of network nodes is disclosed. In one embodiment, the technique is realized by receiving data at a first network node via a first optical signal having a first wavelength. The first wavelength corresponds to a
7053700 High-efficiency amplifier and method May 30, 2006
Methods and apparatus are provided for efficiently amplifying a signal. An input signal is decomposed into a plurality of two state signals, each two state signal having a respective on level and off level. This may involve sigma-delta modulation and phase splitting. Each of the two stat
7050861 Controlling a destination terminal from an originating terminal May 23, 2006
A caller associates computer software code with a signalling protocol messages such that when the messages are received at a destination processor the computer software code is executed. For example, the messages may be improved SIP protocol messages with incorporated Java code. By s
7050793 Context transfer systems and methods in support of mobility May 23, 2006
A broad aspect of the invention provides a method of providing mobility support for a mobile node's traffic. The method involves maintaining context information for the mobile node on each of a first plurality of network nodes carrying the traffic; and proactively transferring and ma
7050758 Self-configuring repeater system and method May 23, 2006
Provided is a system and method for a self-configuring repeater in a telecommunications network. The repeater receives data from a base transceiver station (BTS) via a downlink channel and sends data to the BTS via an uplink channel. The repeater compares the power level of a downlin
7050667 Metropolitan photonic switch May 23, 2006
A photonic switch uses a cost-effective DWDM optimized switch architecture allowing the introduction of DWDM into the metro network. In order to implement this architecture cost-effective ways of implementing the optical carrier frequency/wavelength precision required for a Dense Wav
7050565 Multimedia augmented call coverage May 23, 2006
A technique for sharing multimedia sessions between users that share a directory number allows incoming calls to be routed to both phones. Once one party picks up, the other party is alerted to this fact. Both parties may then exchange multimedia information to help in the handling and
7047561 Firewall for real-time internet applications May 16, 2006
The present invention relates to a firewall for use in association with real-time Internet applications such as Voice over Internet Protocol (VoIP). The firewall applies an application proxy to the signaling and control channels and a packet filter to the bearer channels. One of the
7047312 TCP rate control with adaptive thresholds May 16, 2006
The TCP receiver's advertised window (i.e., the receive buffer of a TCP connection) limits the maximum window and consequently the throughput that can be achieved by the sender. Thus, the idea behind TCP rate control is to match the offered network load to the available resources by
7046700 Spectrally invisible framing of high error rate data signals May 16, 2006
A framer is adapted for framing a high error rate data signal received through a link of a communications network, the data signal comprising M (an integer, M>1) interleaved sub-streams. The framer includes means for detecting a respective unique synchronizing word within each sub
7046699 Pointer processing and path BIP-8 computation for large concatenated payloads May 16, 2006
A system for performing Bit Interleaved Parity-8 (BIP-8) computation on large concatenated payloads, in a processing node of an optical communications networks. The BIP-8 computation system comprises storage means associated with each processing strip for allowing the comparison betw
7046693 Method and system for determining availability in networks May 16, 2006
Availability in a segment of a communications network between two terminating devices periodically transmitting a data packet over the segment is determined. The two terminating devices receive transmitted data packets according to an expected arrival format for data packets. The seg
7046669 Communications network May 16, 2006
A label switched path is determined in a communications multi-service network comprising a plurality of nodes interconnected via quality of service capable tunnels to provide a QoS guarantee for a session in which resource availability from the network edge to multiple central stages
7043632 End-to-end security in data networks May 9, 2006
A method and apparatus for managing a data transmission in a network is provided, which has a client, a real server and a load-balancing node (virtual server). The load-balancing node includes a handshake executor for handling a security protocol to establish a handshake between a cl
7043244 Method and apparatus for changing radio link configurations in a mobile telecommunications syste May 9, 2006
A telecommunications system and a method of operating the same are described in which mobile terminals may communicate with base station transceivers over an air interface, a communication to another user terminal being supported in macrodiversity by radio links between a plurality o
7043210 Adaptive coding and modulation May 9, 2006
The present invention provides a unique feedback system in a wireless communication system wherein the transmission channel is always overloaded with data, which is configured and modulated at a select order of modulation. Based on the channel conditions, only a portion of the data c
7043160 Method, system and signal for carrying overhead information in a transport network employing pho May 9, 2006
A communications signal which carries a purely digital wrapper signal and a method and system for generating it and extracting overhead information therefrom. The wrapper signal can be received by a high-performance format-specific receiver at the end of the network as part of the overal
7043159 Bidirectional optical networks May 9, 2006
A wavelength division multiplexed (WDM) apparatus is provided for a bidirectional dense WDM optical fiber communication network with cost-effective and efficient allocation of the resources available at each network node. For each fiber link, the invention uses a WDM signal composed
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