Abstract: A technique for managing process state information involves pushing process state information from the kernel space to the user space in the event of an application crash and generating a core file at the user level instead of at the kernel level. Handling the process state information at the user level instead of at the kernel level provides more flexibility in the generation and management of a core file as compared to systems that use kernel code to generate and manage the core file. A core dump application at the user level can be programmed to forward the core file to another system that has permanent storage capacity available. Additionally, the core dump application can be programmed to compress the process state information and/or to extract only certain information from the process state information while generating the core file.

Abstract: The present invention provides for background calibration of a time-interleaved analog-to-digital converter (TIADC). In one embodiment, a background calibrator includes a TIADC having a parallel array of time-interleaved main signal processors, each main signal processor including an ADC connected to a corresponding output FIR filter. The background calibrator also includes an auxiliary signal processor having an ADC connected to at least one corresponding output FIR filter. Additionally, the background calibrator further includes a timing calibration circuit, wherein the timing calibration circuit is configured to select one of the main signal processors, exchange the auxiliary signal processor with the selected main signal processor in the TIADC and connect the selected main signal processor to the timing calibration circuit. In an alternative embodiment, the timing calibration circuit is further configured to reduce a timing mismatch of the selected main signal processor.

Abstract: Techniques for transmitting and receiving signals using a linear propagation channel, and the detection and decoding of the signals, are described. The symbols are decoded by computing the likelihood of each bit in a block of data in light of all blocks of received complex data and the constraints imposed by the channel code. Extrinsic information and a priori information are exchanged in an iterative fashion until desired performance is achieved. Extrinsic probability values are computed by searching through hypotheses in the constellation of available symbols to maximize the extrinsic probability values, with decoding employing a stored list of candidate points for discovered within a search radius, the list comprising the solution points found within the smallest radii.

Abstract: A method for automating changes to a service plan between a mobile subscriber and a wireless service provider is provided. In one embodiment, the method creates a temporary service plan for the subscriber. This method includes: a) receiving a request to create the temporary plan, b) retrieving the subscriber's existing service plan from a subscriber database, c) providing a change selection menu to the user, d) modifying the existing service plan in conjunction with one or more user selections associated with the change selection menu to create the temporary plan, and e) storing the temporary plan in the subscriber database. In another embodiment, the method modifies the subscriber's existing service plan and the modified service plan supercedes the previous service plan. In another aspect, a method for processing a call from a mobile station associated with the subscriber when the temporary service plan is in effect is provided.

Abstract: The present invention relates to wireless telephone networks, and more particularly to the allocation of radio channels to calls in CDMA-based systems when their Radio Access Networks (RAN) are congested. A Base Station (BS) receives a call origination from a mobile device. The BS communicates information about the call and about its radio availability to a Mobile Switching Center (MSC). The MSC determines the priority of the call and how the call should be treated by the BS based on the supplied information. The MSC communicates the treatment information and the priority information back to the BS. When the RAN is congested, high-priority calls are queued. These high-priority calls are served based on allocation specification in which radio channels may be assigned to low-priority calls, which are not queued, while there are still calls in the queue.

Abstract: In the method for selecting a channel rate, link quality between the serving portion of the network and a mobile station is determined from at least one signal strength measurement. A channel rate is then selected based on the determined link quality. Also, a physical channel is assigned to the mobile station on a prioritized basis with respect to the selected channel rate.

Abstract: Methods and systems for providing wide-band voice service via a telecommunications switch are described herein. A call can be initiated from a wide-band telecommunications device (e.g., an IP telephone) to another telecommunications device through a gateway (e.g., an IP gateway) associated with one or more telecommunications networks, such as, for example, a WAN, LAN and/or PSTN. One or more digital signals (e.g., 4 or fewer DS0s) can then be reserved for the call, if a telecommunications switch (e.g., a class 5 circuit switch, 5ESS®, etc.) associated with one or more of the telecommunications networks determines that at least one timeslot is available to permit a transfer of the call to the other telecommunications device.

Abstract: A wireless telecommunications network node is provided. The node includes a processor configured to handle call traffic and to record measurement data. The processor is also configured to detect processor load and to automatically adjust the rate of recordal of measurements dependent on detected processor load. The adjustments are so as to keep the processor load within predetermined limits.

Abstract: A system for, and method of, position estimation of, or tracking, an object. In one embodiment, the system includes: (1) a map generator configured to create, without requiring a propagation model, a mean map for the region and (2) a measurement matching engine associated with the map generator and configured to match received measurements regarding the object to a number of nearest neighboring grid points in the mean map.

Abstract: The content access control system has a content permissions field in the Home Location Register database for each mobile subscriber. The content permissions data are managed by a content manager who has content access responsibility for the mobile subscriber pursuant to an existing management relationship, such as parent-child or employer-employee. The content manager initiates a communication connection to a designated content access control administration system and uniquely identifies the subscriber via their mobile communication device identification and assigns one or more content rating access permissions to each identified subscriber. The content rating permissions comprise a definition of the content that is prohibited and/or permitted by indicating via selecting content ratings or other such code definitions to identify the appropriate content.

Abstract: A “user plane” location system for implementing a location based service (“LBS”) such as enterprise fleet tracking includes a number of GPS-enabled wireless mobile units in communication with a wireless network. Location data is periodically transmitted from various “client” mobile units to a “server” mobile unit. The location data relates to the respective physical locations of the client mobile units, and may be determined from GPS signals received by the client mobile units. Once the server mobile unit receives the location data, the location data is processed for use in one or more LBS applications. This may include displaying the location data on a screen or other display of the server mobile unit, including displaying the location data in conjunction with map data. The use of a server mobile unit facilitates portability of the server functionality to remote locations.

Abstract: The present invention provides a process for forming electrical contacts to a molecular layer in a nanoscale device, the nanoscale device, and a method of manufacturing an integrated circuit comprise such devices. The process includes coating a surface of a stamp with a metal layer and forming an attached layer of anchored molecules by coupling first ends of the anchored molecules to a conductive or semiconductive substrate. The process also includes placing the metal layer in contact with the attached layer of anchored molecules such that the metal layer chemically bonds to free ends of the anchored molecules. The resulting devices produced have superior reliability as compared to conventional prepared devices.

Abstract: The system for providing emergency voice mail service includes two components: a first component that informs a calling party that emergency voice mail service has been activated due to an interruption in telephone service provided by the affected local exchange(s), and a second component that provides emergency voice mail service to customers who are displaced from their residences or simply affected by the service outage. The calling party that wishes to leave a message or the customer whose service is interrupted and wishes to listen to their messages calls a nationwide toll free number and is routed to the Emergency Voice Mail System. The caller is asked to enter the telephone number of the customer who is out of service and then can enter a predetermined code to leave a voice mail message or retrieve a voice mail message for the wire-line or wireless customer who is out of service.

Abstract: In an over-sampled maximum-likelihood sequence estimation (MLSE) receiver system, the optimal sample spacing is determined for a variety of conditions. In an illustrative implementation, the system includes an optical filter for tightly filtering an incoming optical data signal with an on-off-keying (OOK) non-return-to-zero (NRZ) format, followed by an optical-to-electrical converter, an electrical filter, a sampler, and a MLSE receiver. The sampler samples the filtered electrical data signal twice each bit period with unequal sample spacings. For wide optical filtering bandwidths, the optimal sample spacing occurs at less than 50% of a bit period. For narrow bandwidths, the optimal sample instances occur closer to the maximum eye opening.

Abstract: Systems and techniques for classification of incoming text messages into categories. An initial set of categories is created and populated with a set of initial messages in each category. Incoming messages are assigned to a category based on text analysis of the incoming message and analysis of dissimilarities and differences between the message and messages already in the category. A set of unclassified messages is also maintained for incoming messages that do not fit an established category. Periodically, unclassified messages are reassigned to one of the established categories or to new categories created based on analysis of the unclassified messages.

Abstract: The invention proposes a method for feedback control, in which a portion of a data signal is split and rectified and the signal intensity is detected with slow speed electronics for improving the control of a delay line interferometer (DLI) used in optical data transmission. A control signal is generated and fed back to the DLI based on the detected signal intensity. The invention further proposes a device provided with a DLI, a first and second optoelectronic component, and a differential amplifier.

Abstract: The invention includes an apparatus for receiving an optical signal from an optical input means and directing the optical signal to one of a plurality of optical output means. The apparatus includes a solid signal propagating material having a refractive index greater than the refractive index of air. The solid signal propagating material includes a first transparent surface optically cooperating with the optical input and output means, a second transparent surface optically cooperating with a first light directing mechanism, and a reflective surface optically cooperating with the first light directing mechanism. A first reflecting component of the light directing mechanism directs a received optical signal to a second reflecting component of the light directing mechanism via the reflective surface of the signal propagating material. The second reflecting component of the light directing mechanism directs the respective incident optical signal to the selected one of the plurality of optical output means.

Abstract: A scheme for authentication, dynamic key generation and exchange provides means for authentication of mobile nodes (22) and generation of per session, per node, encryption keys for encrypting/decrypting communications between a mobile node (22) and an access point (24) in wireless local area networks (50). The scheme utilizes the same infrastructure and authentication information for both data link layers (layer 2) and network layers (layer 3). This scheme is particularly applicable to networks adhering to the IEEE 802 LAN family of standards.

Abstract: A channel sounding system employs orthogonal sequences to meet the Cramer-Rao bound in estimating the channel and achieves considerable simplification of the structure necessary to perform the channel sounding. These advantages are achieved by developing orthogonal sequences of substantially arbitrary length as a function of first and second existing orthogonal sequences and using such orthogonal sequences for channel sounding in lieu of M-sequences. The techniques of the invention are especially suited to systems that use multiple antennas at the transmitter and multiple antennas at the receiver, so called multiple-input multiple-output (MIMO) systems.

Abstract: The present invention provides a process for forming electrical contacts to a molecular layer in a nanoscale device, the nanoscale device, and a method of manufacturing an integrated circuit comprise such devices. The process includes coating a surface of a stamp with a metal layer and forming an attached layer of anchored molecules by coupling first ends of the anchored molecules to a conductive or semiconductive substrate. The process also includes placing the metal layer in contact with the attached layer of anchored molecules such that the metal layer chemically bonds to free ends of the anchored molecules. The resulting devices produced have superior reliability as compared to conventional prepared devices.