Abstract: Handheld electronic devices are provided that contain wireless communications circuitry. The wireless communications circuitry may have first and second transceiver circuits that operate in the same radio-frequency band using different communications protocols. The wireless communications circuitry may have a configurable radio-frequency combiner and divider circuit that is coupled between an antenna and the first and second transceiver circuits. The combiner and divider circuit can be configured to support simultaneous use of the antenna by the first and second transceiver circuits. When simultaneous use is not required, the combiner and divider circuit can be used by either the first transceiver circuit or the second transceiver circuit.

Abstract: In a first high frequency switch, a current path and a current path are connected in parallel. When a positive voltage is applied to a control terminal, a current flows through a path passing through (Vc2)?(DL)?(DSL1)?(DDI)?(GSL2)?(DL) and a path passing through (Vc2)?(DR)?(DD2)?(DL). In a second high frequency switch, a current path and a current path are connected in parallel. When a positive voltage is applied to a control terminal, a current flows through a first path and a second path. Thus, the transmission signal is switched with a low control voltage and deterioration of insertion loss characteristics or harmonic distortion characteristics is prevented.

Abstract: Exemplary embodiments are provided of apparatus and methods relating to antenna multiplexers and demultiplexers are disclosed. In exemplary embodiments, antenna multiplexers include two or more inputs for receiving a corresponding number of signals from multiple antennas. The antennas may include world cell antennas, AM/FM antennas, SDARS antennas, GPS antennas, and/or antennas combining the preceding. Exemplary antenna multiplexers also include an output for simultaneously outputting the combined signals received by the multiplexer. Demultiplexers for receiving such combined signals and outputting each signal via a separate output are also disclosed.

Abstract: A method and apparatus for processing multiple signals at a common frequency combined into a single radio frequency cable and subsequently recovering the signals without significant losses, distortion, or cross-talk. The method and apparatus includes processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward or reverse link transmissions. The invention enables a single power amplifier to amplify multiple RF signals that occupy a common frequency channel and after amplification splitting these signals into amplified copies of the originals. The amplified signals may be sent to different antenna ports to illuminate different base station sectors if required. The signal splitting function is performed at the antenna masthead such that this method reduces the number of feeder cables running up the antenna tower by a factor of N, where N is the number of common frequency signals (e.g.

Abstract: A generalized form of cyclic shift diversity is described for use in an OFDM system with multiple transmit antennas. Multiple cyclic shifts are performed for each transmit antenna and the shifted signals are scaled and summed to form a time-domain data stream for each transmit antenna. A cyclic extension is added to each data stream prior to transmission.

Abstract: The invention discloses a new protocol to minimize data loss, reduce overhead transmissions on the system, reduce time delays and signal interruption during a handover in a Mobile IP system. Prior art Mobile IP systems transfer policy and charging rules for a particular mobile user device from a server to a gateway after the handover occurs. The invention allows for the transfer of the policy and charging rules during the handover procedure so that the system does not need to wait on a subsequent transmission of the policy and charging rules in order to process the transmissions sent by or to the mobile user, which results in minimized data loss, reduced overhead, and reduced time delays and signal interruption.

Abstract: A method for providing a buffer status report in a mobile communication network is implemented between a base station and a user equipment. When data arrives to buffers of the user equipment and the priority of a logical channel for the data is higher than those of other logical channels for existing data in the buffers, a short buffer status report associated with the buffer of a logical channel group corresponding to the arrival data is triggered. The user equipment is based on obtained resources allocated by the base station to fill all data of the buffer of the logical channel group in a Protocol Data Unit. If all data of the buffer of the logical channel group corresponding to the arrival data can be completely filled in the Protocol Data Unit, the short buffer status report is canceled. Otherwise, the user equipment transmits the short buffer status report.

Abstract: Embodiments described herein include methods for improving the SINR, and therefore communication quality or rate, in the downlink of a cellular communication system. In an embodiment, the system is an orthogonal-frequency-division multiple-access (OFDMA) system. In an embodiment, a set of terminals is designated a coordinated-transmission group. The set of terminal is chosen such that the slot-allocations of the set are given special treatment to alleviate interference from other sectors or cells. In an embodiment, “zones” defined in the WiMax standard are “repurposed” to handle the coordinated-transmission, although the zone was originally intended for another purpose.

Abstract: A hybrid forwarding apparatus and method for cooperative relaying in an OFDM network are provided. In a hybrid forwarding apparatus in a relay terminal, a forwarding scheme selector selects a forwarding scheme for transmission. An amplify and forward (AF) block amplifies data received from the forwarding scheme selector, if an AF scheme is selected. A decode and forward (DF) block decodes and encodes data received from the forwarding scheme selector, if a DF scheme is selected. A multiplexer provides the output data of the AF block and the DF block to an OFDM modulator.

Abstract: A system and method for harmonizing adaptive arrays for wireless communication systems. The system includes a basis beam that receives packet transmissions from stations. The system determines the angle of arrival of the packet transmissions and forms a select beam to cover at least one of the stations.

Abstract: Embodiments described herein include methods for improving the SINR, and therefore communication quality or rate, in the downlink of a cellular communication system. In an embodiment, the system is an orthogonal-frequency-division multiple-access (OFDMA) system. In an embodiment, a set of terminals is designated a coordinated-transmission group. The set of terminal is chosen such that the slot-allocations of the set are given special treatment to alleviate interference from other sectors or cells. All terminals within a coordination group generally use the same slot, but embodiments are not so limited.

Abstract: A method relating to inter-frequency or inter Radio Access Technology (RAT) measurements (IFM) between a User Equipment (UE) and a mobile communications network (NW), and an apparatus for implementing the method, comprising operating, by a UE having a plurality of receiver branches (100) (110), detecting whether IFM is needed (120); and selecting, if IFM is needed, either to use dual antenna data reception for detecting data in compressed mode and performing IFM during gaps, or to use single antenna data reception mode (SADRM), using the second antenna for IFM based on the value of certain parameters (130).

Abstract: A wireless intelligent switch engine (WISE) is described. The wireless intelligent switch engine provides for automatic switching between different physical wireless interfaces in mobile devices while roaming to maintain a wireless network connection. WISE functions as a bridge between a mobile device and multiple wireless network interfaces to provide automatic and seamless switching among networks while roaming. The mobile device sees WISE as a LAN interface and communicates with WISE using the TCP/IP protocol stack, thus providing a PPP-less configuration that uses the TCP/IP protocol stack regardless of the wireless interface.

Abstract: An inventive high frequency circuit includes a switch circuit (SPDT1), connected to an antenna terminal (Anti), using a field-effect transistor for switching between a connection with first to third transmitting terminals (Tx1-1, Tx2-1, Tx3-1) and a connection with first to third receiving terminals (Rx1-1, Rx2-1, Rx3-1); a transmitting-side triplexer (Trip1) for branching a transmitting path connected to the switch circuit into transmitting paths of first to third frequency bands; and a receiving-side triplexer (Trip2) for branching a receiving path connected to the switch circuit into receiving paths of the first to third frequency bands. The switch circuit can be formed as an IC to downsize the circuit.

Abstract: A system for multi-accessing a radio communication data call include a plurality of user equipments controlling allocation of a radio resource according to a desired data transfer rate and a multi-access system for multi-accessing the plurality of user equipments to one or more radio communication terminals according to the allocation control. Because a plurality of user equipments multi-access the data call of the radio communication terminals, a high-speed wireless line can be effectively used. In addition, connecting the plurality of user equipments to one radio communication terminal can be provided with a suitably distributed service from a data service providing network.

Abstract: Radio frequency signals are transmission-reception processed by N antennas. A radio unit performs a frequency translation processing, an amplification processing and an A-D or D-A conversion processing between a baseband signal and the radio frequency signal. A signal processing unit performs a signal processing necessary for the transmission/receiving processing by adaptive array antennas. A modem unit performs modulation/demodulation processings. A baseband unit serves as interface with a network. A control unit controls timings, channel allocation and the like of the radio unit, the signal processing unit, the modem unit and the baseband unit.

Abstract: An information processing system includes an information providing apparatus for providing a service, and a mobile terminal for receiving the service from the information providing apparatus. The information providing apparatus includes a plurality of directional antennas arranged in a predetermined space and forming at least one particular area in which communication coverage areas of the directional antennas overlap each other, and a plurality of data transmitting units for transmitting predetermined data to the mobile terminal in the particular area using the directional antennas thereof. The mobile terminal includes a data receiving unit for receiving in the particular area the predetermined data that the data transmitting unit has transmitted via the directional antenna having the particular area as the communication coverage area, and a data processing unit for processing the predetermined data received by the data receiving unit.

Abstract: A wireless communications device includes an antenna, a multi-port path selection structure having an antenna port connected to the antenna, and plural ports connected to respective one or more receive and transmit paths of the wireless communications device. The multi-port path selection structure has a transmit band reject filter connected to the transmit path and a second filter connected to the receive path.

Abstract: An apparatus to provide a multi-media communications access point for vehicles that permits subscribing devices to transmit file data, and telephonic or video data to other remote devices via an HSDPA RF communications network. The apparatus includes a wireless access switch, a cellular data transceiver, an optional data network signal booster, two antennas, and an input-output interface panel. Firmware in the wireless access point allows high-speed access to the cellular data network and point to point mobile communications from one apparatus to another minor apparatus.

Abstract: Disclosed is a Neighbor Location Discovery Protocol (NLDP) that determines the relative locations of the nodes in a mesh network. In one embodiment, NLDP can be implemented for an ad-hoc wireless network where the nodes are equipped with directional antennas and are not able to use GPS. While NLDP relies on nodes having at least two RF transceivers, it offers significant advantages over previously proposed protocols that employ only one RF transceiver. In NLDP antenna hardware is simple, easy to implement, and readily available. Further, NLDP exploits the host node's ability to operate simultaneously over non-overlapping channels to quickly converge on the neighbor's location. NLDP is limited by the range of the control channel, which operates in a omni-directional fashion. However, by choosing a low frequency band, high power, and low data rate, the range of the control channel can be increased to match the range on the data channel.

Abstract: A device includes a wireless communication port to allow the device to communicate with a wireless network. The device also has at least two wireless network profiles and a distributed device management interface to manage the wireless network profiles. The device management interface is established by defining at least one wireless network adapter class and providing properties for the wireless network adapter class. A setting class is defined for wireless network adapter configurations and the wireless network adapter is associated with a wireless provider.

Abstract: A method of operating a wireless data processing system to selectively enable a multi-antenna processor to demodulate N separate data signals from M separate antennas simultaneously. The multi-antenna processor is adapted to respond to changing channel conditions between two access points, so that it selectively kicks in if there is noise, interference, frequency fading, a need for an enhanced data rate, a need for an increased operating range, etc.

Abstract: Disclosed herein is wireless home LAN system using multiple antennas, and a wireless access point (AP) apparatus in a communication system for providing a plurality of terminals contained in a closed specific area with a wireless access service that includes a plurality of wireless modules arranged in the closed specific area at intervals of a predetermined distance, that are selectively activated, and a control module connected to the wireless modules by wire, for controlling communication performed in the area of the terminals and connection to an external network using the activated wireless modules. The apparatus selectively activates antennas in only a specific area requesting a communication service using a single controller and a plurality of antennas connected to the controller, such that it can solve performance anomalies and inter-cell frequency interference problems. Also, the apparatus controls propagation beams to concentrate on a minimum area, resulting in improved security.

Abstract: A wireless sensor network comprises a plurality of nodes that communicate over wireless communication links. At least one of the plurality of nodes receives sensor data from a sensor. At least one of the plurality of nodes determines when a discrete event occurs. When the discrete event occurs, transmits data related to the discrete event over at least one of the wireless communication links. The discrete event is a function of the sensor data.

Abstract: The invention relates to remote controlling and telemonitoring an unmanned radio transmitter (1), which can be controlled from a center if required. The center is connected to the remote-controlled transmitters via a public or private network and the operational functions of the transmitter are, if required, remote-controlled or interrogated by the center, according to the HTTP protocol, via a connection to a server/browser network linked to the remote-control device; simultaneously, the operational functions are automatically transmitted, without a prompt, from the transmitter to the centre (2) via a checkback network connection according to the SNMP- or HTTP-principle.

Abstract: In the method, a phase of at least one signal transmitted from a transmit antenna of a base station is shifted based on a sweeping frequency having a differentiating component.

Abstract: A method of space-time and/or space-frequency block encoding begins by receiving at least two complex signals, wherein each of the at least two complex signals includes a real component and an imaginary component. The method continues, for each of the at least two complex signals, by generating a swapped complex signal, wherein each of at least two swapped complex signals includes a swapped real component and a swapped imaginary component, wherein the swapped real component corresponds to the imaginary component and wherein the swapped imaginary component corresponds to the real component. The method continues by encoding the at least two complex signals and the at least two swapped complex signals to produce space-time and/or space-frequency block encoded signals.

Abstract: A wireless communications adapts its mode of operation between spatial multiplexing and non-spatial multiplexing in response to transmission-specific variables. An embodiment of a wireless communications system for transmitting information between a base transceiver station and a subscriber unit includes mode determination logic. The mode determination logic is in communication with the base transceiver station and the subscriber unit. The mode determination logic determines, in response to a received signal, if a subscriber datastream should be transmitted between the base transceiver station and the subscriber unit utilizing spatial multiplexing or non-spatial multiplexing. In an embodiment, the mode determination logic has an input for receiving a measure of a transmission characteristic related to the received signal.

Abstract: A receiver (10) is arranged to simultaneously receive at least a first (S1) radio frequency signal having a first frequency band (1) and a second radio frequency signal (S3) having a second frequency band (3) that is at least partly overlapping the first frequency band (1). The receiver has frequency down-conversion means (32,33) for frequency down converting the at least first (S1) and second radio frequency signals (S3) to at least a first (S2) and a second (S4) lower frequency signal and multiplexing means (34) for sequentially multiplexing the at least first (S2) and second lower frequency signals (S4) into a frequency multiplexed signal (S5).

Abstract: Methods, apparatuses and systems directed to partitioning access points into two or more network access layers, such as overlay and underlay network access layers. According to one implementation of the present invention, a wireless network management system partitions a set of wireless access points into an overlay network for low-functionality clients and an underlay network for high-functionality clients. As described in further detail below, each of the overlay and underlay networks provides a class of network service, where each class of network service differs relative to at least one attribute (e.g., type of 802.11 access, data rates, High-Density, Quality-of-Service, encryption, compression, etc.). For didactic purposes, the overlay network is also referred to as the overlay network service layer (NSL) and the underlay network is referred to as the underlay NSL.

Abstract: A wireless network apparatus and corresponding method and computer program comprises channel queues each to store packets of data to be transmitted on a respective wireless channel in one of a plurality of frequency bands; a memory to store a channel access time value and a return to channel value for each of the wireless channels; and a controller to select one of the wireless channels according to a channel polling scheme, and on that channel, cause a start beacon packet to be sent, exchange packets of data for an interval specified by the channel access time value, cause a stop beacon packet to be sent at the end of the interval specified by the channel access time value, and cause a further start beacon packet to be sent at the end of an interval specified by the return to channel value.

Abstract: To select a transmission mode to use for a data transmission via a MIMO channel from station A to station B, station A obtains channel information used for spatial processing and determines the age of this information. Station A selects one of multiple transmission modes based on the age of the channel information and possibly other information (e.g., the fading characteristic of the MIMO channel). To select rate(s) to use for the data transmission, station A obtains channel state information (CSI) indicative of the received signal quality for the MIMO channel, e.g., received SNRs or “initial” rates. Station A determines the age of the CSI and selects one or more “final” rates based on the CSI, the age of the CSI, the selected transmission mode, and possibly other information. Station A processes data in accordance with the selected transmission mode and final rate(s) and transmits the processed data to station B.

Abstract: A system and method are provided which add, via an add-on module, synchronization functionality to an instrument that does not otherwise support such synchronization functionality. Various synchronization techniques may be supported by the synchronization module. For instance, in certain embodiments the synchronization module supports message-based synchronization techniques and/or time-based synchronization techniques. Accordingly, in certain embodiments, the add-on module supports synchronization with another device (e.g., another instrument or another add-on module coupled to an instrument) via synchronized local clocks (e.g., IEEE 1588) and messaging over a communication network. In certain embodiments, the add-on module additionally or alternatively supports the use of “time bombs” to trigger scheduled actions on the instrument with which the synchronization module is interfaced.

Abstract: A method and apparatus for traffic arbitration in a system are provided. In the system, a first module operating in a first protocol and a second module operating in a second protocol share one communication channel. An arbitration circuit schedules medium accesses thereof, in which a quota table maintains a utilization value updated in accordance with the amount of time slots consumed by a particular traffic type, and a time counter periodically resets the utilization value to a default value. When the arbitration circuit receives a request for medium access of the particular traffic type, the arbitration circuit grants the request according to the utilization value, such that the first module or the second module are not activated at the same time.

Abstract: A method is disclosed for transferring preferred frequency information in a mobile communication system which establishes a preferred frequency layer and a non-preferred frequency layer for a Multimedia Broadcast/Multicast Service (MBMS) service. The method involves the steps of determining at least one preferred frequency of the MBMS service when a session of the MBMS service starts, generating the preferred frequency information representing said at least one preferred frequency, and transmitting the preferred frequency information to at least one serving radio network controller for managing communication of user equipments intended to receive the MBMS service.

Abstract: A wireless headphone assembly has left and right speakers attached to ends of a headphone body, and at least two antennas, e.g., one located at each speaker. Reception can be improved by selecting a “best” one of the antennas based on a quality metric.

Abstract: A receiver includes a plurality of antennas; a switching device coupled to the antennas for selecting one of the antennas to receive transmitted signals; a demodulator coupled to the switching device for demodulating the transmitted signals to generate demodulated signals; and a control circuit coupled to the demodulator and the switching device, for counting a specific type of packets within the demodulated signals so as to accordingly control the switching device.

Abstract: A method of, and a wireless device capable of, dynamically allocating radio spectrum access within a wireless communication system includes a wireless transceiver having at least a physical layer functionality to transmit and receive data across a wireless network. The device extracts measurements of radio spectrum conditions from a least one of a local and a remote wireless transceiver to form an assessment of radio spectrum conditions. The device then integrates the assessment of radio spectrum conditions to form an integrated assessment of radio spectrum conditions between the local and remote wireless transceivers. The device further possesses a means for selecting a preferred set of radio spectrum access parameters for a communications session between the local and remote wireless transceiver.

Abstract: An apparatus and method for providing an integrated web browsing service integrates a general web browsing function with a mobile web browsing function. Through this integration, various web content and web services are provided to the user. Also, additional equipment or interface installation for a mobile web service is not required for terminal equipment, and it is possible to recover or otherwise compensate for display limitations of a mobile terminal. The integrated web browsing service apparatus includes terminal equipment which performs Internet web browsing and mobile communication web browsing, and a mobile terminal which performs web browsing by itself or for supporting web browsing of the terminal equipment by connecting an Internet server and an mobile communication web server.

Abstract: An antenna assembly for a wireless communications device has an antenna, a filter circuit, and a connector constructed to engage a wireless communications device. A filter circuit includes a band-pass filter and a first notch filter disposed in serial electrical communication with the band-pass filter, the band-pass filter operable to permit the passage of oscillatory electrical signals in a first frequency range, the first notch filter operable to impede the passage of oscillatory electrical signals in a second frequency range, the second frequency range residing within the first frequency range.

Abstract: A multiple-in multiple-out (MIMO) system may use an antenna selection operation to determine an optimum number and subset of active antennas for communication over correlated fading channels. The system may use second-order statistics, such as correlation matrices determined at a receiver, to determine the optimal number of antennas and transmit constellations.

Abstract: A radio frequency (RF) power combiner for connecting multiple base transceiver stations with one antenna assembly includes at least one combining device coupled to at least two base transceiver stations for combining signals generated thereby into a combined signal for being transmitted by the antenna assembly. At least one frequency selective RF power detector is coupled to one of the signals generated from one of the base transceiver stations for generating an output indicating whether the signal at a predetermined frequency is present. A logic control module is coupled to the frequency selective RF power detector for generating a control signal in response to the output of the detector. An oscillator is coupled to the logic control module for generating a carrier signal at the predetermined frequency for the combined signal in response to the control signal.

Abstract: The present invention provides a method and an apparatus for adapting a data rate that a mobile station indicates to a base station for transmission on a forward link in a cellular system. The method comprises measuring a first value indicative of strength of at least one of a primary and a secondary pilot. The method further comprises compensating the first value indicative of strength of the pilot based on an offset to select a second value indicative of the data rate for the base station. The base station may determine an offset value for compensation and send an indication to the mobile station during the setup of the mobile station. When the mobile station connects to the base station, a measurement of a channel condition (i.e., pilot) may determine a revised data rate for transmission of a next data packet on the forward link.

Abstract: In a transmission/reception selection switch, a first diode is arranged in series with a transmission signal line and a second diode is arranged in shunt with a reception signal line. A first current route where a direct current passes through the first diode is connected in parallel to a second current route where a direct current passes through the second diode. When a predetermined positive voltage is applied to a control terminal, the diodes are turned ON and a direct current flows through, in order, the control terminal, a resistor, an inductor, the diode, a strip line, and an inductor), and a direct current flows through, in order, the control terminal, the resistor, the second diode, and the inductor.

Abstract: The present invention keeps track of channel change indicia associated with wireless communications with mobile terminals, and bases the scheduling of data in time slots of a scheduling period on the channel change indicia. The channel change indicia may be derived from any information that bears on the rate at which channel conditions are likely to change, such as the velocity the mobile terminals are traveling or actual channel condition measurements. Preferably, mobile terminals associated with intermediate values for the channel change indicia are given priority, and thus, scheduled for transmission before those with lower and higher values. The invention is applicable to uplink and downlink communications, and is particularly beneficial when implemented in uplink and downlink schedulers in a base station.

Abstract: A method includes determining for each access point and each associated client that has traffic to exchange with the access point in either directions of a link a pattern of slots of times that causes minimum interference to clients of other access points in a wireless local area network; deriving a conflict graph of pair wise patterns of different access points representing which patterns conflict on a particular client, the conflict graph representing which patterns of the slots cannot be scheduled simultaneously in a slot so as to avoid interference; and generating a schedule for each access points in the slots such that no two conflicting patterns for two different access points are scheduled in the same slot.

Abstract: A method and apparatus of transmitting pilot tones and data in multi-carrier spatial multiplexing transmission is disclosed. The method includes a plurality of subscribers transmitting data to a base station through common frequency sub-carrier and symbol time tiles. Each of the multiple subscribers rotating frequency sub-carrier and symbol time locations of pilot tones within the frequency sub-carrier and symbol time tiles.

Abstract: A method and system for adjusting the configuration of devices in a communications system is provided. An engineer may perform a test of the configuration of a device in a system by using a diagnostic measurement device (DMD). The engineer (or the DMD) may then establish a test result. The test result may indicate any adjustments that are necessary to the configuration of the device to optimize the configuration of the device and the system. The engineer may then cause the DMD to wirelessly send a control signal to the device's controller, causing the device's controller to make the necessary adjustments to the configuration of the device. The engineer may then verify the adjustments made by performing a second test and then possibly sending another wireless signal to the device's controller to reconfigure the device's configuration accordingly.

Abstract: Handheld electronic devices are provided that contain wireless communications circuitry. The wireless communications circuitry may have first and second transceiver circuits that operate in the same radio-frequency band using different communications protocols. The wireless communications circuitry may have a configurable radio-frequency combiner and divider circuit that is coupled between an antenna and the first and second transceiver circuits. The combiner and divider circuit can be configured to support simultaneous use of the antenna by the first and second transceiver circuits. When simultaneous use is not required, the combiner and divider circuit can be used by either the first transceiver circuit or the second transceiver circuit.

Abstract: In this second radio channel setting example, the grouping is done for each radio mobile stations 98 running on the same lane. A different radio channel is assigned to each group. Accordingly, this prevents the beam patterns using the same channel from intersecting with each other (interfering with each other). Actually, as shown in FIG. 10B, the pas or the pursuit does not occur between the radio mobile stations 98. Thus, the same radio channel is assigned to each radio mobile stations 98 running on the same lane so as to avoid the interference in the same radio channel. Hence, the same radio channel can be repeatedly used.