Abstract:
A communication system (100) and a method (500) of communicating backhaul data. The communication system can include a controller (160, 225). The controller can dynamically select from a plurality of backhaul sites (120, 125) at least a first backhaul site to establish a backhaul communication link with an access point (115). The controller also can generate a control signal that indicates to the access point to beam steer a backhaul signal to the first backhaul site. The access point can include a phased array (215) that dynamically beam steers the backhaul signal in azimuth and elevation.
Abstract:
A method and system for assigning a carrier channel to a subscriber device (102) in an OFDM system is provided. The method includes estimating (602) a link impairment associated with the subscriber device. The method also includes assigning (604) the subscriber device to a carrier channel having a cyclic prefix that conforms to the link impairment. The link impairment is related to the delay spread of a link used by the subscriber device.
Abstract:
A terminal 300 arranged to initiate a call or indicate an incoming call with a voiced alert and methods thereof, the terminal including a receiver 303 for receiving a signal corresponding to a call alert, a processor 309 for determining that the signal is a call alert signal corresponding to the voiced alert and for providing an alert signal corresponding to the voiced alert; and an audio transducer 317 coupled to the alert signal corresponding to the voiced alert for generating a user perceptible voiced alert. The terminal for initiating includes an audio transducer 321 for converting a caller party voiced signal to an alert signal and a processor 309 for generating a call alert signal corresponding to the alert signal; and a transmitter 305 for sending the call alert signal corresponding to the alert signal to a network and thereby to the called party.
Abstract:
An apparatus enabling multiple client devices (204, 206 and 208) to access a SIM card (202), coupled to a server device (200), along a local link (210), that includes a SIM card interface (214) and a router unit (226). The SIM card interface (214) couples the SIM card (202) to the server device (200), formats the commands from the client devices for transmission to the SIM card, and formats responses to the commands for transmission from the SIM card to the client devices. The router unit (226) routes the commands from the server device to the SIM card interface, and routes the responses to the commands for transmission along the local link from the SIM card to the client devices. A broadcast message is transmitted by the router unit along the local link to the client devices in response to detecting a physical presence signal transmitted by the SIM card interface in response to the SIM card being coupled to the SIM card interface.
Abstract:
A communication unit 101, 103, system (FIG. 3) and corresponding method 500 are arranged for distributing information. The communications unit comprises: a receiver 203, 231 to receive a message originating from an information source for distribution to one or more target communications units; a controller 207 coupled to a memory 215 to store the information in the memory; and a transmitter 205 having short range communications capabilities to transmit the information to individual communications units to facilitate distribution to the one or more target communications units on an opportunistic basis.
Abstract:
Methods and apparatus for simultaneous independent voice and data services using a remote subscriber identity module (SIM) are disclosed. The methods and apparatus described herein allow a personal computer (or other data station) which does not contain a SIM card and a mobile phone (or other voice station) which does contain a SIM card to cooperate wirelessly to allow the personal computer to use the SIM card in the mobile phone in a virtual manner. As a result, the personal computer may transmit and receive packet-switched data at the same time the mobile phone is transmitting or receiving a circuit-switched voice signal without interference between the two simultaneous transmissions.
Abstract:
A portable communication device (100) includes at least one sensing circuit (101) and a processor (104), and operates in accordance with a corresponding method of operation. The sensing circuit detects (205) either a characteristic of an external environment containing the portable communication device (e.g., a chemical in the air or acceleration of the device) or a characteristic of the portable communication device user (e.g., heart rate or blood sugar content), and generates a signal (207) representative of a feature of the sensed characteristic. The processor receives the signal and initiates an event based at least on the feature of the sensed characteristic as represented by the signal. Events include, but are not limited to, one or more of the following: alerting the device user, transmitting a signal (e.g., an emergency call) to a remote communication device, re-sensing the characteristic or sensing another characteristic, and modifying a setting or profile of the device.
Abstract:
dispositivo e método de radiofreqüência para alocação de freqüência múltipla um método da presente invenção inclui as etapas de identificar (801) uma primeira alocação de freqüência e uma segunda alocação de freqüência e programar um dispositivo de radiofreqüência (401, 701, 901) para pelo manos uma entre a) receber simultaneamente um primeiro sinal dentro da primeira alocação de freqüência e um segundo sinal dentro da segunda alocação de freqüência; e b) transmitir simultaneamente um primeiro sinal dentro da primeira alocação de frequüência e um segundo sinal dentro da segunda alocação de freqüência.
Abstract:
Orthogonal transmit diversity is implemented by employing a data splitter (803) to subdivide channel information (801) into at least a first portion of bits (802) and a second portion of bits (804). Each portion is spread with its own Walsh code for eventual transmission to a mobile station via a predetermined carrier frequency. When the number of bits in the first and second portion (802, 804) are small, separate Walsh codes are used to maintain orthogonality. When the number of bits in the first and second portion (802, 804) are relatively large, a time-division multiplex transmission is used to maintain orthogonality. A controller (809) controls the subdivision of the channel information and also an interleaver (308) to further enhance the effects of the diversity transmission. Control information related to the subdivision is transmitted to the mobile station so the channel information can be accurately reconstructed prior to decoding.
Abstract:
A wireless communications unit 200 , and corresponding method within, is arranged and constructed for choosing a system selection algorithm that is used for selecting a system to provide services for the communications unit and comprises: means for associating a location with the wireless communications unit 223 215 ; a controller 209 for choosing a system selection algorithm from a plurality of such algorithms based on the location, where the chosen algorithm includes scan parameters (FIG. 3 ) that vary with the location; and a receiver 205 controllable by the controller according to the chosen algorithm to search for a system to provide service for the wireless communications unit.