Abstract: A method and system for use in data communications. The method and system substantially ensure that actual data transmission per unit time from at least one input-buffered crossbar switch ingress to at least one input-buffered crossbar switch egress substantially satisfies a designated target amount of actual data transmission per unit time.

Abstract: A method and system for use in data communications. The method and system substantially ensure that actual data transmission per unit time from at least one cross-point buffer switch ingress to at least one cross-point buffer switch egress substantially satisfies a designated target amount of actual data transmission per unit time.

Abstract: The invention relates to packet-switched transmission of calls and particularly to packet-switched transmission of calls on circuits between a telecommunication network and base stations from the base stations toward the network.

Abstract: Improved techniques for optimizing performance of a wireless network. In an illustrative embodiment, a derivative-based optimization process is applied to optimize an objective function of a network performance metric with respect to a number of network tuning parameter variables. The optimization may be based on first or higher order derivatives of the objective function with respect to the selected network parameter variables. The objective function may include, e.g., one or more of a maximization of network coverage, a maximization of network capacity, and a minimization of network resources. Additional network parameters which are not variables in optimization process serve as constraints to the optimization process. Advantageously, the invention substantially improves the process of designing, adjusting and optimizing the performance of wireless networks.

Abstract: The invention concerns an improvement to an auto-negotiation process for a link between network devices and in particular the avoidance of ambiguity when signals at a higher rate, such as 100BASE-Tx scrambled idle signals, resemble signals at a lower rate, such as 10BASE-T link pulses. Analog and digital filtration is employed to identify 100BASE-Tx energy more accurately and a resultant indicating signal is used in conjunction with another signal characteristic of the higher rate signals, such as a descrambler lock signal, to ensure that the link is not established unless the bit error rate is reasonably low.

Abstract: A system and method of providing to an Asynchronous Transfer Mode (ATM) access network a standard ATM interface for accessing a non standard ATM bandwidth adjustable virtual path connection established on a backbone network between a backbone source node and a backbone destination node. A standard ATM available bit rate (ABR) virtual path connection is established between the ATM access network and the backbone source node of the bandwidth adjustable virtual path connection. The available bit rate of this ABR virtual path connection is adjusted according to the adjusted bandwidth of the virtual path connection establish on the backbone node.

Abstract: To reduce the size of a multi-carrier transmitter circuit for a mobile communication base station, by suppressing instantaneous peak output power to a small value with respect to a wide-band signal of a few MHz to tens of MHz so that the peak factor of a multi-carrier signal is reduced.

Abstract: A method and apparatus for converting UBR and nrt-VBR connections to ABR connections in an ATM network is presented. In response to receiving a connection set-up message for a UBR or nrt-VBR connection, it is determined it is determined whether the port contemplating conversion is commissioned as a conversion port, which enables it to perform such conversions. If the port is a conversion port, it is determined whether or not the port type of the ingress port and the port type of the egress port support connection format conversion. If the port types support connection format conversion, it is determined whether or not the set-up message for the connection indicates that the connection is conversion enabled. If the connection is conversion enabled and the ports are of the right configuration, the set-up message is converted from the nrt-VBR or UBR format to an ABR format for transmission.