Abstract: The present invention is a methodology for controlled switchover of unicast and multicast data flows in packet based switching system. In some cases it is advantageous to purposefully support switchover of flows from one path to the other without causing loss of data. This is termed a “controlled” or “hitless” switchover. In accordance with the present invention switchover methodology, given that an ingress arbiter device is transmitting to both cores simultaneously, it is required that the flows to both switching cores be synchronized at an aggregator level and that an egress arbiter be given time to cease receiving packets from one Core then switch over to the other Core, and continue receiving packets.

Abstract: The invention relates to a method of setting up a call between a central module (33) and a remote module (37) of the type comprising at least one first transmission channel and one second transmission channel according to distinct primary and secondary bit rates respectively. According to the invention, the method comprises the steps setting up a call by default on the first channel; listening and searching for a signal indicating a secondary bit-rate requirement, assuming a detection of the signal indicating a secondary bit-rate requirement, a phase for the switching of a bit rate from the first primary bit-rate transmission channel to the secondary bit-rate transmission channel, associated with a step for the masking, during a predetermined masking period, of an acknowledgement signal sent during the default setting-up phase. The invention also concerns a corresponding switching method, transmission network section and transmission network.

Abstract: A “Wireless INfrastructure Network”(WINN) comprises packet endpoints such as servers, routers, base stations and gateways. No mobile switching center (MSC) is required. Communications between these endpoints is Internet Protocol (IP) based and voice communications between base station endpoints occurs directly without use of an MSC. Each base station comprises a router and converts wireless air interface signaling to a common IP signaling format.

Abstract: In accordance with one embodiment of the invention, a central server system computes a feasible stretch value for use in scheduling the servicing of job requests by a plurality of communication channels. A stretch value provides an indication of the delay experienced by each job request to complete, when the central server processes many jobs concurrently. A processing time is calculated for each job request based on the size of the job request and the bandwidth of the channel. Thereafter, a stretch value is proposed. The server system computes a deadline for each job to be the arrival time of the job request plus the product of the processing time and the proposed stretch value. Thereafter, each job request is scheduled, based on an “earliest deadline first” arrangement.

Abstract: The method provides power control in transmitting a downlink signal of frame data in a wireless network. Each frame is composed of timeslots, with each timeslot being further composed of quarter symbols. The method includes mapping each quarter symbol to an offset within a frame attenuation buffer, and computing a template for the frame, each step being performed only once. The template is used for filling the attenuation buffer with attenuation values to attenuate the transmit power for the downlink signal. Attenuation values are provided for each quarter symbol in a frame, although a computation is not required for each quarter symbol. The attenuation values are grouped in blocks that are recursively copied into the frame attenuation buffer based on the template. The contents of a filled attenuation buffer are output for use in attenuating the transmit power of the frame.

Abstract: The present invention provides an organic field-effect transistor (OFET) and a method of fabricating the OFET. The OFET, configured to function as a p-type semiconductor, includes a substrate having a top surface and a semiconductor layer located over the top surface. The semiconductor layer comprises organic semiconductor molecules. Each of the organic semiconductor molecules includes a core having conjugated pi bonds, a fluorinated alkyl group, and an alkyl spacer group having a chain of two or more carbon atoms. One end of the chain is bonded to the fluorinated alkyl group and another end of the chain is bonded to the core. Substituents coupled to the carbon atoms have an electronegativity of less than about 4.

Abstract: An interleaver circuit architectures, which utilizes the relationship between intra-row elements in a matrix, in order to simplify the MOD computations necessary in an interleaver. The interleaver calculates a subset of results, stores those results, performs operations on the stored results in order to obtain new results, then updates at least some of the old results with the new results for the next column operation. The interleaver address is then calculated row by row. By storing only a subset of the results and replacing old results with new results, the interleaver can calculate the interleaver address “on the fly” in one clock cycle with very little delay. The interleaver may also require less power and smaller substrate surface area.

Abstract: A special-purpose file system is provided which includes a combination of services and features which improve the performance of applications employing caches, such as caching web proxies. This file system also provides a file system cache which can be used as a general high-performance file system cache for file systems which need a cache. The services and features include collocating files together on a disk; keeping file meta-data in memory; compressing file names to hash values for reference; using a flat naming scheme for files; providing background daemons that pack files into clusters and clean disk and main memory space; and implementing a user-level library. The file system reduces access to related disk files, eliminates disk operations that are needed to maintain directory and meta-data information, and avoids multiple buffering of file data, and saves and efficiently manages disk and main memory space.

Abstract: Disclosed is a method of communicating emergency call information originating from wireless phones among multiple entities using a set of network signaling operations for pooling and reconciling records of emergency calls and identifications for sources of fraudulent calls. A set of network signaling operations is described herein for communicating records of emergency calls among network entities of same or different levels, and for communicating identified sources of fraudulent calls among network entities of same or different levels.

Abstract: The dual mode handset system provides unified cellular service and wire-line service with a single Directory Number assigned to the dual mode handset and a corresponding cordless base station that are connected to the subscriber's local wire-line (POTS line) connection to the telephone network. The dual mode handset is programmed to operate as a cordless telephone when in proximity of the cordless base station. The handset operates as a cellular telephone when it is out of reach of the cordless base station. The dual mode handset is assigned the same telephone number as the subscriber's connection to a local wire-line telephone switching system. Consequently, the Caller ID information is consistent on calls originated through the dual mode handset, regardless of whether the call passes through the cordless base station to the subscriber's connection to a local wire-line telephone switching system or the cellular network.

Abstract: A system and method for reducing switching overhead in a communication network and a web-based server incorporating the system or the method. In one embodiment, the system includes: (1) an optimization engine configured to receive input data describing trunks, switches and traffic demands in at least a portion of the communication network and arrange connections between the trunks and switches such that the traffic demands are satisfied and such that a switch load or cost is reduced and (2) a report generator associated with the optimization engine and configured to produce a report containing a modified configuration having the reduced switch load or cost.

Abstract: A method and transmitter for amplifying at least first and second diversity-encoded signals, where each of the first and second diversity-encoded signals may represent information of a first signal to be transmitted using transmit diversity. Amplification of the first and second diversity-encoded signals may be shared between at least two amplifiers, and amplification for a second signal, to be amplified and transmitted without using transmit diversity, may be shared between the at least two amplifiers.

Abstract: A simplified methodology for accomplishing traffic management in a packet based network is achieved by allowing allocation of bandwidth based on a count of the number of endpoint connections associated with a specific service for a corresponding network device. A network device (e.g., IP router) can be configured to count the number of TCP/IP and UDP/IP connections and bandwidth usage per interface. The counting can be done by identifying the IP Addresses, Type of Service (TOS), and TCP/UDP and/or UDP/IP socket number range in the IP Header of a packet and then querying a specific communication type. When reaching the maximum allowed connections or bandwidth for a specific service, the network device (e.g., IP router) stops forwarding any new calls by means of dropping packets of new calls and informing the given endpoints to disconnect the new calls.

Abstract: A multiple band antenna (and an array of such antennas) includes a first radiating element that radiates at a first band, at least one second radiating element that radiates at a second band, and a frame to hold the radiating elements. The frame disposes the first and second radiating elements in different planes so that cross-band interference is substantially avoided. Alternatively, a multiple band array antenna includes a first array of radiating elements in a first plane and a second array of radiating elements in a second plane. The first plane overlays the second plane. As a result, individual radiating elements in the first array are substantially interspersed with individual radiating elements in the second array. But the first array and the second array are arranged so that individual radiating elements in the first array substantially do not overlap individual radiating elements in the second array.

Abstract: An apparatus includes an optical fiber and an electrically conducting layer. The optical fiber has a tapered portion with a lateral surface and an end face. The electrically conducting layer is located on a portion of the lateral surface of the tapered portion. The tapered portion and electrically conducting layer are configured to generate surface plasmons that propagate along a surface of the conducting layer in response to light of a preselected wavelength arriving at an end of the tapered portion.

Abstract: A wireless network that broadcasts a message from a telecommunication system to mobile stations associated with the wireless network is provided. The wireless network includes one or more mobile switching centers, one or more base stations, and one or more mobile stations. In various embodiments, the telecommunication system may include an emergency alert system and/or a public switched telephone network along with the wireless network. The message may include a presidential message, a local area message, a state message, a national information center message, a weather news report, a headline news report, a traffic news reports, or a promotional advertisement. Several methods for broadcasting the message in a wireless network are provided.

Abstract: The present invention provides a method and system for sending a server-specified message from an application server to Customer Premises Equipment (CPE) without setting up a call path between the application server and the CPE. The application server is coupled with a switch, which is in turn coupled with the CPE. The application server sends a request to the switch. The switch sends, based upon the request, a predetermined server-specified message to the CPE without setting up a call path between the application server and the CPE. The CPE is not rung and the predetermined message is not affected by the features of the line associated with the CPE.

Abstract: A digital transmission line tap circuit is provided for applying a non-intrusive tap on a digital transmission line thus allowing the transmission signal to be monitored or utilized by another piece of transmission equipment. The tap circuit incorporates all the required functions of the tap in one circuit and eliminates large components, such as termination transformers.

Abstract: A graphical user interface (GUI) is provided for use in conjunction with attribute evaluation utilizing computation rules and a combining policy. The graphical user interface displays a visual representation of the evaluation of attributes. The GUI displays a representation of the evaluation status of attributes and their associated computation rules during execution. The display may be updated dynamically to provide a user with a visual representation of the progression of attribute evaluation. The representation of evaluation status may include representations of the values assigned to, as well as the state of, data items and associated computation rules. States may be visually represented in the display in various ways, such as using various colors or labels associated with the data items and associated computation rules. Further, the particular data items and computation rules for which evaluation status is represented may be user selectable.

Abstract: A wireless endpoint employs frequency hopping for communicating signals in a wireless communications system. Over a time period T, the wireless endpoint performs pseudo-random selection of a frequency from a hopping set of N frequencies such that over at least a portion of the time period T, the frequency selection is constrained to less than the N frequencies.