1491 results about "Radio frequency communication" patented technology

A system and method are disclosed for providing ubiquitous public network access to wireless, mobile terminals using private networks having private network access points and connections with the public network. The wireless, mobile terminals are permitted to use wireless, radio frequency communication devices comprising private network access points. A network access server (NAS) is associated with each wireless, radio frequency communication device and provides an interface between the wireless, mobile terminals and the private network. The NAS controls registration of wireless, mobile terminals as subscribers, and provides public network access to the mobile terminals through the private network's access point and public network connection. The NAS also restricts access by the mobile terminals to the private network, meters network useage by the mobile terminals, and controls use of bandwidth by the mobile terminals. The NAS also interfaces with integration operator distributed services over the public network. The integration operator services include databases and servers for storing and providing subscriber and network provider information for subscriber registration, network access and useage control, and accounting purposes. The NAS may be provided as a standalone element embodied in a computer, or may be integrated with the wireless radio frequency device and/or a network adaptor device for the private network.

A system comprises an equipment service vehicle and an off-board computer system. The equipment service vehicle further includes a power source, a power transmission link, a plurality of input devices, a plurality of output devices, and an on-board computer system. The on-board computer system further includes a plurality of microprocessor-based interface modules and a communication network. The plurality of interface modules are coupled to the power source by way of the power transmission link and are interconnected to each other by way of the communication network. Each of the plurality of interface modules is coupled to respective ones of the plurality of input devices and the plurality of output devices by way of respective dedicated communication links. The on-board computer system stores I/O status information for the plurality of input devices and the plurality of output devices. The on-board computer system transmits at least some of the I/O status information by way of a wireless radio-frequency communication link to the off-board computer system.

To reduce interference in a communication system (10), a communication unit (42-50) is arranged to initiate establishment of a radio frequency communication with a base station (26-38) by transmitting a system access request on a dedicated, wide area control channel. Upon receipt of the system access request, a base station (32) of the communication system of FIG. 1 responds by forming a narrowbeam control channel to the communication unit and transmitting system control information to the communication unit on the narrowbeam control channel, the system control information transmitted from the array of antenna elements and arranged to identify a narrowbeam communication resource for use in the radio communication. The communication unit (42-50), upon receiving the system control information, then configures itself to utilise the narrowbeam communication resource for the radio communication.

A portable communication device is used in a digital money system so as to pay for purchase by digital money by using the portable communication device. A remote communication interface interfaces radio-frequency communication with a remote communication terminal. A short-distance communication interface interfaces wireless communication with a communication terminal located in the vicinity of the portable communication device. Data or instruction information is input to the portable communication terminal by an inputting unit such as a key panel. The data is stored in a memory and is displayed on a display unit such as an LCD. An enciphering and deciphering circuit enciphers or deciphers the data to be transmitted or received so as to maintain security.

An apparatus and method for enabling far-field radio-frequency communications with an implantable medical device in which an antenna is embedded within a dielectric compartment of the device. A helical antenna may be employed to save space while still permitting far-field telemetry over a desired range of frequencies.

A wireless power and communication unit for field devices is configured to connect to a field device and provide operating power and wired digital communication between the unit and the field device. RF circuitry in the unit is configured for radio frequency communication. In one embodiment, power supply circuitry in the unit includes one or more solar power cells that convert solar energy into electricity to power both the unit and the field device. The unit interacts with the field device in accordance with a standard industry communication protocol. The unit communicates wirelessly with an external device, such as a control room, based upon the interaction with the field device.

A distributed radio frequency communication system facilitates communication between wireless terminals and a core network. The system includes a group of remote radio units (RRUs). Each RRU of the group of RRUs is coupled to an antenna to communicate with at least some of the mobile terminals and includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) and communicate over a fronthaul link. The system also includes a baseband unit (BBU) coupled to the core network and the fronthaul link, and communicably coupled to the group of RRUs over the fronthaul link. The BBU includes electronic circuitry to assign one or more RRUs, selected from the group of RRUs, to a cluster of RRUs based on one or more parameters, and to perform at least a second-level protocol of the RAN.

A multiple access, spread-spectrum communication system processes a plurality of information signals received by a radio carrier station over telecommunication lines for simultaneous transmission over a radio frequency channel as a code-division-multiplexed signal to a group of subscriber units. The radio carrier station receives a call request signal that corresponds to a telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The radio carrier station includes a plurality of CDMA modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an information signal with a message code signal to provide a code division multiplexed signal. The RCS includes a system channel controller is coupled to receive a remote call. A radio frequency transmitter is connected to all of the modems to combine the code division multiplexed processed signals with the global pilot code signal to generate a code division multiplexed signal. The transmitter also modulates a carrier signal with the code division multiplexed signal and transmits the modulated carrier signal through a radio frequency communication channel to the subscriber units. Each subscriber unit includes a CDMA modem which is also synchronized to the global pilot signal. The CDMA modem despreads the code division multiplexed signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the radio carrier station and the subscriber units, and system capacity management for maintaining a maximum number of active subscriber units for improved system performance.

A conference system leveraging radio frequency communication standards for initiating a conference and controlling conference room presets. The system comprises a processor, a memory, a data storage device, a display, and at least one communication interface configured to enable communications with a remote server and one or more RF beacons, wherein the one or more RF beacons are configured for periodically broadcasting a beacon ID. The system further comprises a program of instructions stored in the memory and executable in the processor, the program of instructions being operable to: receive from at least one of the one or more RF beacons the beacon ID, estimate a distance to the at least one of the one or more RF beacons according to a detected signal strength of the RF beacon broadcast, determine a location based on the distance to the at least one of the one or more RF beacons, accept information defining a conference type from a plurality of conference types, each conference type being associated with preset resources, display at least one preset parameter associated with the conference type, receive preset information including a start time, an end time, and one or more settings for a preset resource, automatically associate the preset information with at least one preset resource based on the determined location and the conference type, and send to the associated preset resources at least one control command comprising the one or more settings in response to the start time.

A wireless communication device includes a host module. A first wireless interface device transmits a first outbound packet in accordance with a first wireless communication protocol at a first power level and a first rate during a first time interval and that transmits a second outbound packet at a second power level and a second rate during a second time interval, wherein the first power level is less than the second power level and wherein the second rate is less than the first rate. A second wireless interface device transceives data between the host module and a second external device during the second time interval in accordance with a second wireless communication protocol. An antenna section provides at least one radio frequency communication path between the first wireless interface device and the first external device and between the second wireless interface device and the second external device.

A playmate toy or similar children's toy is provided having associated wireless, batteryless ID tag that can be read from and/or written to using a radio-frequency communication protocol. The tag is mounted internally within a cavity of the toy and thereby provides wireless communication of stored information without requiring removal and reinsertion of the tag. In this manner, a stuffed animal or other toy can be quickly and easily identified non-invasively, without damaging the toy. Additional information (e.g., unique personality traits, special powers, skill levels, etc.) can also be stored on the ID tag, thus providing further personality enhancement, input/output programming, simulated intelligence and/or interactive gaming possibilities.

A distributed radio frequency communication system facilitates communication between a wireless terminal and a core network. The system includes a remote radio unit (RRU) coupled to at least one antenna to communicate with the wireless terminal. The RRU includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) for communicating between the wireless terminal and the core network. The system also includes a baseband unit (BBU) coupled to the core network, and configured to perform at least a second-level protocol of the RAN. A fronthaul link is coupled to the BBU and the RRU. The fronthaul link utilizes an adaptive fronthaul protocol for communication between the BBU and the RRU. The adaptive fronthaul protocol has provisions for adapting to conditions of the fronthaul link and radio network by changing the way data is communicated over the fronthaul link.

The invention discloses an intelligent network burglar-proof door composed of a hardware system and a software system. The intelligent network burglar-proof door is mainly characterized in that a software control part comprises an underlying operation system, an application software system, a human face recognition system, a fingerprint recognition system, a touch screen control system, a local/ different-place storage system, an uninterruptible power supply management system, an extended interface system for controlling home appliances, a monitoring and alarming system for positioning and fortifying a multi-region zone PTZ (pan/tilt/zoom) electronic map, an access control system for controlling an unlocking motor, an intercom system capable of automatically responding, an H.264 video coding and decoding system, a 2.4G wireless video commutation system, a radio frequency communication system, a communication system for supporting TD/WCDMA (time division-wideband code division multiple access) and an Internet communication system. The intelligent network burglar-proof door checks information in real time or remotely backs up, improves data protection safety and intelligent and convenient maneuverability. The intelligent network burglar-proof door can widely serve as various burglar-proof doors, military guard burglar-proof doors, safety box doors and vehicle central door locks.

The present invention employs hierarchical modulation to simultaneously transmit data over different modulation layers using a carrier RF signal. Each modulation layer may be of a higher or lower order than the other modulation layers. Certain embodiments of the present invention may transmit different information on the different modulation layers. Other embodiments of the present invention may use the different layers for processing different information streams.

A method for delivering electronic services in a personal area network (PAN) can include providing a kiosk in a publicly traversable area. The kiosk can be configured to deliver electronic services over short-range radio communications links to wireless devices in a personal area network (PAN). The kiosk also can be configured to communicate over an existing physical communications link medium. A PAN can be established in the publicly traversable area. Electronic services can be selectably retrieved through the existing physical communications link medium into the kiosk. Finally, the retrieved selected electronic services can be delivered to wireless devices in the PAN over the short-range radio communications link. Notably, the step of establishing a PAN in the publicly traversable area can include establishing a BLUETOOTH-based PAN with wireless devices in the publicly traversable area. In addition, the step of providing a kiosk first can include retrofitting an existing kiosk both with a short-range radio frequency communications system, and with a host computing device for selectively retrieving electronic services over the existing physical communications link medium, and for delivering selected electronic services to the wireless devices in the PAN. Second, the retrofitted kiosk can be activated in the publicly traversable area.

A method for wirelessly transmitting data from an utility meter, such as an electric meter, is disclosed. A microprocessor housed inside an energy meter obtains readings of various power indicia, stores the readings, processes the buffer to determine an efficient means of formatting the data for transmission using a radio frequency communications link. The method examines the plurality of readings and determines if values can be communicated by transmitting an initial reading and followed by the difference of the next reading from the previous reading. A special indication is transmitted to turn ‘on’ compression and allow the receiver to propertly interpret received data. Other indicators are transmitted to turn ‘off’ compression, turn on compression for a pre-defined limited duration, or vary the range of the difference between readings.

The present Broadband Link System supplements the existing Air-To-Ground Radio Frequency communications link with an additional, separate high speed Broadband Ground-To-Air Data Channel to provide additional data communication capacity for aircraft. This Broadband Ground-To-Air Data Channel is typically a uni-directional (Ground-To-Air) link directed via a focused beam to selected aircraft which are operational in the coverage area of the Broadband Ground-To-Air Data Channel. The routing of the various data transmissions on both the Air-To-Ground Radio Frequency communications link and the Broadband Ground-To-Air Data Channel are managed in a unified manner to maximize the utilization of the two transmission facilities.

The present invention provides a method and an apparatus for communicating data over a network between a communication node, for example, an access point having a first and a second antenna and a first and a second mobile station. The method comprises weighting a first data at the access point to transmit the first data using the first and second antennas so that the first mobile station only receives the first data and weighting a second data at the access point to transmit the second data using the first and second antennas so that the second mobile station only receives the second data. A space division multiple access (SDMA) module may cause a transmission protocol to transmit the first data to the first mobile station on the downlink and transmit the second data to the second mobile station in parallel to the transmission of the first data on the downlink. In a telecommunication system, this substantially simultaneous transmission of the first and second data using a similar carrier frequency in a radio frequency communication over a wireless local area network (WLAN) may increase throughput of a downlink, for example, by a factor nominally equal to the number of antennas at an access point.