Abstract: A method for adjusting antenna radiation in a wireless network involves varying antenna radiation directions of antennas throughout a defined range. A test receiver measures signal parameters from the antennas at measurement locations as the antenna radiation directions are varied. The processing system determines a resultant antenna radiation direction for each of the antennas in the wireless network, or segment thereof, based upon the measured signal parameters.

Abstract: A method for optimizing the capacity of a forward link in a cellular telecommunications network involves dynamically setting the minimum gain level on the forward link for each mobile station, based each mobile station's individual performance. The cellular network has one or more base stations and a mixed population of single-diversity mobile stations and dual-diversity mobile stations. In communicating with a particular mobile station, the gain level of the transmission over the forward link is monitored at the base station. The base station also monitors the reverse link for a power measurement report message (“PMRM”) sent by the mobile station. If the gain level stays at or close to a minimum gain level for a certain time period, and if no PMRM?s are received during that time period, then the base station reduces the minimum gain level by a set amount. The reduction in the minimum gain level can be triggered based on other factors, such as the forward link frame error rate.

Abstract: The present invention provides a wireless backbone for use with a public switched telephone network (PSTN). In one embodiment, the wireless backbone includes a central office switch coupled to the PSTN and configured to process a plurality of calls associated with the PSTN. Additionally, the wireless backbone also includes a wireless transmission unit coupled to the central office switch and configured to cooperate with another wireless transmission unit to yield a wireless trunk for communicating the plurality of calls to another central office switch.

Abstract: The present invention provides a communications backbone for connecting first and second telecommunication nodes. In one embodiment, the communications backbone includes a first time division multiplexed gateway associated with the first telecommunication node and configured to be directly connected to a packet-switched network. Additionally, the communications backbone also includes a second time division multiplexed gateway associated with the second telecommunication node and configured to be directly connected to the packet-switched network to form a communications trunk between the first and second telecommunication nodes.

Abstract: Errors in closed loop transmit diversity (CLTD) feedback signaling may be detected and/or corrected by a mobile station, according to aspects of the present invention, based on signals received from a base station. The mobile station is generally configured to compute antenna weights to be applied at the base station and feed back corresponding antenna control bits to the base station, as in conventional CLTD systems. However, rather than automatically process subsequent transmissions received from the base station as if the base station properly received the antenna control bits and applied the computed antenna weights, the mobile station attempts to determine the antenna weights actually applied at the base station, and uses these determined antenna weights for processing the subsequent transmissions. Accordingly, even if a feedback signaling error occurred, resulting in the base station using the wrong antenna weights, the mobile station may properly process the transmissions.

Abstract: Semiconductor apparatus comprising a substrate having a substrate surface; a first dielectric layer comprising molecules of a first compound, the molecules of the first compound having first ends and second ends, the first ends being covalently bonded to a first region of the substrate surface, the second ends having aromatic regions; and a polycrystalline semiconductor layer comprising organic semiconductor molecules with aromatic portions, the polycrystalline semiconductor layer being on the first region of the substrate. Integrated circuits comprising apparatus, and methods for making apparatus and integrated circuits.

Abstract: In a method of block coding, each character of the codeword may be thought of as a sum of characters of the message word, computed such that each message-word character that contributes to the sum is weighted by a respective weight coefficient. In the method described here, the weight coefficients are derived from a division polynomial of an elliptic curve.

Abstract: An apparatus for controlling telephone communications through a communication switch during intervals of call traffic volume in excess of a threshold call traffic volume includes: (a) a call traffic volume sensing device coupled with the communication switch and measuring the call traffic volume during selected intervals; and (b) a call traffic control device coupled with at least one of the communication switch and the call traffic volume sensing device. The call traffic control device cooperates with the communication switch to involuntarily terminate selected calls through the communication switch when at least one selected parameter is exceeded. The at least one selected parameter includes the call traffic volume.

Abstract: Systems and methods for intelligently assigning a channel to a device being used by a mobile user in a power controlled, wireless communications system by minimizing the difference between a mobile user's received signal power and the minimum received signal power of a current user on a candidate carrier frequency. Each carrier frequency within a cell is examined to determine whether it has at least one current user assigned to a channel and also has at least one unoccupied channel. For each carrier frequency that meets both of these requirements, a channel quality metric is obtained for each occupied channel. The carrier frequencies are pruned down to a subset of candidate carrier frequencies using the channel quality metrics. Finally, a channel within the set of candidate carrier frequencies is selected by computing a cost function based on the received signal power of the mobile user and the received signal power of each occupied channel.

Abstract: In a wireless communication system using multiple antennas at the transmitter and multiple antennas at the receiver, with a sufficiently large number of antennas and/or diversity order, the same performance that is obtainable when employing instantaneous rate indication feedback can be attained without any such short-term feedback by adjusting the data rate of each transmit antenna according to a prescribed function. The prescribed function does not depend on the short-term state of the channel, but instead only depends on its long-term statistics, which may be fed back from the receiver to the transmitter at relatively lengthy intervals.

Abstract: A method and apparatus for increasing the capacity of a multiple-input and/or multiple-output system. Each sub-stream of a primary data stream is stratified to produce a processed sub-stream whose strata can be separated out and decoded with an acceptable error rate. A sub-stream can be stratified by dividing it into a plurality of sub-stream-components that are processed to obtain strata, with each stratum representing one of the sub-stream-components. The strata are then combined to obtain the processed sub-stream. Stratifying allows a particular processed sub-stream's strata have different transmit features from each other, such as different bit rates, or different power levels, or both. This reduces the interference for some of the strata of each processed sub-stream since as stratum are separated out and decoded they are no longer interference for the other strata. Thus, allowing for a higher overall bit rate for the processed sub-streams.

Abstract: A method of administering network selections for a mobile station between a second generation/third generation wireless network and wireless local area networks includes detecting when the mobile station encounters a wireless area network, and communicating an identity of the encountered wireless area network to the second generation/third generation wireless network. The communicating prompts a query for permission to establish a session between the mobile station and the encountered wireless local area network. When permission is granted, the method includes receiving a key distributed to the mobile station. The key is used by the mobile station to establish a session between the mobile station and the encountered wireless local area network.

Abstract: A scheme is described for mitigating the effects of polarization-mode dispersion (PMD) in a wave-division multiplex (WDM) optical communication system having one or more transmission links with one or more quasi-static waveguide sections coupled by one or more non-static coupling sections. A transmitter is coupled to the transmission link and is adapted to transmit optical signals through the transmission link with wavelength channel spacing of the optical signals greater than about the PMD correlation bandwidth of at least one of the one or more quasi-static waveguide sections, so that the PMD induced outage probability for the system is optimized.

Abstract: In a General Packet Radio Service (GPRS) system in which a Serving GPRS Support Node operates a leaky bucket algorithm to control data flow, a packet control unit in the base station is arranged so that on connection of a new mobile, a flow control message in the form of new values of B the maximum bucket capacity and R the leak rate is sent to the Serving GPRS Support Node only when it is known that the new connection is non-bursty. In the Temporary Block Flow queue for the new connection, a threshold is set at a queue length which ensures that at least two Logical Link Layer-Protocol Data Units are received before the threshold is reached. New values of B and R are then sent, the new value of B being related to the maximum data capacity of the newly connected mobile.

Abstract: An apparatus includes a sample stage, a cantilever mount, a cantilever-force detector, a cantilever feedback system, and a sample stage feedback system. The sample stage is configured for holding a sample. The cantilever mount is configured for mechanically fixing a mechanical cantilever having a scanning tip. The cantilever-force detector is configured to produce an electrical cantilever-force error signal. The cantilever feedback system is configured to electromechanically drive the mechanical cantilever in a manner responsive to the cantilever-force error signal. The sample stage feedback system is configured to electromechanically displace the sample stage in a manner responsive to the cantilever-force error signal. The cantilever feedback system and the sample stage feedback system are connected to receive the cantilever-force error signal in parallel.

Abstract: A method providing communication between an MSC and a mobile terminal in a wireless communications system including using the 10 digit MIN identifier for identifying the mobile terminal in all messages requiring a mobile terminal identifier sent from the MSC via a base station to the mobile terminal and using the 15 digit MIN-based IMSI identifier for identifying the mobile terminal in all messages requiring a mobile terminal identifier sent from the mobile terminal via the base station to the MSC. The method can also include deploying the use of 15 digit MIN-based IMSI identifiers in one MSC at a time. The invention also includes a system for providing mobile terminal identification information in a wireless system. The system includes a mobile terminal capable of receiving and responding to messages using a 10 digit MIN for identifying the mobile terminal and sending messages having a MIN-based IMSI identifier for identifying the mobile terminal.

Abstract: Signals are developed for use in a wireless system with multiple transmit and multiple receive antennas so that even in the face of some correlation the most open-loop capacity that can be achieved using a substantially open-loop system with a channel of that level of correlation is obtained. In accordance with the principles of the invention, the signals transmitted from the various antennas are processed so as to improve their ability to convey the maximum amount of information. More specifically, the data to be transmitted is divided into M+1 substreams, where M is the number of transmit antennas. Each transmit antenna is supplied with a combination signal that is made up of a weighted version of a common one of the substreams and a weighted version of a respective one of the substreams that is supplied uniquely for that antenna, so that there are M transmit signals. A receiver having N antennas receives the M transmit signals as combined by the channel and reconstitutes the original data therefrom.

Abstract: A method and apparatus for completing a priority call to a wireless border switch. A priority or preemption request is transmitted as part of the signaling messages used to set up a call. A border switch is a switch which is used in conjunction with the switch indicated by the last-seen pointer from an HLR entry for the called terminal to page a called station. The switch indicated by the last-seen pointer transmits the priority request to a border switch, to indicate that the call should be given priority treatment. Further, preemption service for calls terminating on a wireless station can be provided.

Abstract: The present invention relates to a polymeric composition of matter. The composition includes at least one polymer matrix and plurality of quantum dots distributed therein. The polymer may be a perfluorocyclobutane polymer having high optical transmission at telecommunications wavelengths. The quantum dots may include cap compounds to increase the solubility of the quantum dots in the composition. Typical cap compounds include aromatic organic molecules. Optical devices including waveguides may be fabricated from the polymeric compositions of the invention.

Abstract: The present invention provides a method for encoding messages. The method includes identifying at least a first plurality of messages indicative of a corresponding first plurality of data transmission rates and a second plurality of messages indicative of a corresponding second plurality of data transmission rates based on a prior transmitted message, where the first and second pluralities of messages are unequal. The method also includes transmitting a message from one of at least the first and second pluralities of messages.