4486 results about "Broadbanding" patented technology

A method for providing network access to a shared access communications medium for a plurality of users includes the steps of conducting predictive admission control by arbitrating user requests for access to the shared medium based on predicted aggregate demands, conducting lookahead scheduling for use in making user channel assignments by forecasting schedule transmission opportunities one or more channels of the shared medium, and balancing load by making channel assignments such that a plurality users are each assigned a respective channel of the shared medium based upon a predicted need. Congestion parameters can predicted for each channel of the shared medium and mapped to a congestion measure using a mathematical function that takes into account packet loss rate, packet delay, packet delay jitter, and available capacity.

A method for automatically provisioning a broadband communication service to a subscriber having a broadband modem. The method includes the step of transmitting a service request from the broadband modem to a central office, which is associated with a network service provider. The network is configured for service in response to the service request. The method further includes automatically configuring the broadband modem by transmitting a configuration signal from the central office to the subscriber. The configuration signal may be transmitted to the broadband modem over a POTS subchannel. Alternatively, the configuration signal may be transmitted to the broadband modem over a subchannel in a broadband service, such as a DMT subchannel for ADSL service.

A novel multi-mode vibration damper is invented by using a pair of piezoelectric patches connected with negative capacitance shunt circuit units. A piezoelectric material connected with a series resistor-negative capacitor branch circuit is capable of suppressing the vibration and/or noise amplitudes in the low frequency range. The other piezoelectric material connected with a parallel resistor-negative capacitor circuit is for suppressing the vibration and/or noise amplitudes in the high frequency range. By combining two negative capacitance shunt circuit units, a multi-mode vibration damper is capable of suppressing the whole structure modes simultaneously. In order to describe the characteristic behaviors of a multi-mode vibration damper, the stiffness ratio and loss factor with respect to the non-dimensional frequency are considered. The mechanism of a shunt damper is also described as considering a shunt voltage generated by the shunt impedance. The example results show that the multi-mode vibration damper reduces the vibration amplitudes of the vibrating system significantly across a broadband frequency range.

Embodiments of the present invention provide an apparatus with a flexible probe suitable for determining properties of in vivo tissue from spectral information collected from various tissue sites. An illumination system provides light at a plurality of broadband ranges, which are communicated to a flexible optical probe. Light homogenizers and mode scramblers can be employed to improve the performance in some embodiments. The optical probe in some embodiments physically contacts the tissue, and in some embodiments does not physically contact the tissue. The optical probe receives light from the illumination system and transmits it to tissue, and receives light diffusely reflected in response to the broadband light, emitted from the in vivo tissue by fluorescence thereof in response to the broadband light, or a combination thereof. The optical probe can communicate the light to a spectrograph which produces a signal representative of the spectral properties of the light. An analysis system determines a property of the in vivo tissue from the spectral properties.

The present invention relates to allocating a radio resource in a wireless communication system utilizing orthogonal frequency division multiplexing (OFDM). Preferably, the present invention comprises receiving in a mobile station data associated with a radio resource allocation map from a base station, wherein the radio allocation map comprises control parameters for transmitting an uplink channel, wherein the uplink channel comprises at least on OFDM tile comprising a first set of subcarriers associated with representing at least part of an n-bit data payload, and a second set of subcarriers associated with representing at least part of a non-pilot m-bit data payload wherein each subcarrier carries a modulated data, and the first and the second set of subcarriers are exclusive to each other, and transmitting the uplink channel from the mobile station to the base station.

An arc fault detector system detects arcing faults in an electrical distribution system by monitoring one or more conductors and producing an input signal representing one or more electrical signal conditions in the circuit to be monitored. This input signal is processed to develop signals representing the electrical current flow through the monitored circuit and broadband noise signal components. The system analyzes these signals to determine whether an arcing fault is present, and if so, outputs a trip signal which may be used directly or indirectly to trip a circuit breaker or other circuit interruption device.

In embodiments of the present disclosure improved capabilities are described for increasing the bandwidth in a large area broadband network where an optimization server is incorporated within the wireless network in association with the public data network gateway, which may be deployed in regional areas, thus reducing the time-latency for applications being run from a mobile cellular device. Further, by associating additional optimization servers at base stations, application functionality may be optionally transferred from the regional optimization server to the local base station optimization server in instances where a number of mobile cellular devices are requesting the same data via their access through the same cell, and in other instances, to the effect that back haul network bandwidth utilization is reduced or eliminated.

A method and apparatus for allocating bandwidth in a broadband wireless communication system is disclosed. One embodiment uses a self-correcting bandwidth request/grant protocol. The self-correcting bandwidth request/grant protocol utilizes a combination of incremental and aggregate bandwidth requests. CPEs primarily transmit incremental bandwidth requests to their associated base stations, followed by periodic transmissions of aggregate bandwidth requests. The use of periodic aggregate bandwidth requests (that express the current state of their respective connection queues) allows the bandwidth allocation method and apparatus to be “self-correcting”. Another embodiment utilizes an abridged bandwidth request/grant protocol to allocate bandwidth. The abridged bandwidth request/grant protocol system utilizes padding packets to request a reduction in bandwidth allocation to a CPE. A base station modem alerts a base station CPU when the BS modem receives a padding packet from a CPE. After alerting the BS CPU the method can reduce the associated CPE's bandwidth allocation.

A system designs a thin and relatively flat microwave focusing lens that can produce multiple simultaneous beams, using readily-available isotropic dielectric materials, and having a gradient-index (GRIN) profile. The design optimizes the lens to achieve beam scanning and/or multiple beams over a wide field of regard (FOR) with broad bandwidth and a very short focal length compared with conventional lenses. The lens can be used individually or as an element in a more complex antenna having multiple lenses in various orientations that are independently switched, selected and/or excited simultaneously as elements in a phased array. The antenna terminal incorporates such lens into an array of lenses along with one or more feeds to produce single or multiple beams covering a broad field of regard for such applications as satellite communications on-the-move, cellular, broadband point-point or point-multipoint and other terrestrial or satellite communications systems. The lens and array design support multiple simultaneous independently steerable beams as well as null placement for interference cancellation.

An apparatus and method for switching between an AMC mode and a diversity mode adaptively according to a channel environment in a broadband wireless communication system are provided. According to the present invention, a transmitter (a base station) determines a transmission mode according to frequency-domain and time-domain channel measurement information received from a receiver (a mobile station). If the transmission mode is the AMC mode, the transmitter selects a coding and modulation scheme according to a frequency-domain CQI received from the receiver. If the transmission mode is a diversity mode, the transmitter selects a predetermined coding and modulation scheme.

In a broadband switching system for the switching of asynchronously transferred cells of data, a dynamic bandwidth controller (DBC) controls the application of data cells to an input port of the system. Data cells are supplied by a number of transmitting end-systems. When an end-system begins transmitting data cells, the DBC detects the presence of incoming cells and requests bandwidth from a connection admission control (CAC) forming part of the system. The switching system stores a table associating a number of signal sources connected to the ingress with respective predetermined transmission bandwidths and, preferably also, maximum delay times. When arrival of cells from one of the sources at the input port is detected, the DBC sends a request signal for the relevant predetermined bandwidth to the CAC and delays transmission of the cells until at least the predetermined bandwidth is allocated. This delay is typically effected by sending a cell rate indicator signal back to the input port for placing the source in a halt mode. If no allocation of bandwidth has occurred before the respective maximum delay time, bandwidth is allocated by robbing bandwidth form other signal sources.

A dielectric resonator antenna (DRA) includes: an electrically conductive ground structure; a plurality of volumes of dielectric materials disposed on the ground structure comprising N volumes, N being an integer equal to or greater than 3, disposed to form successive and sequential layered volumes V(i), i being an integer from 1 to N, wherein volume V(1) forms an innermost volume, wherein a successive volume V(i+1) forms a layered shell disposed over and at least partially embedding volume V(i), wherein volume V(N) at least partially embeds all volumes V(1) to V(N−1); and a signal feed disposed and structured to be electromagnetically coupled to one or more of the plurality of volumes of dielectric materials.

Systems and methods for customizing broadband content based upon passive presence detection of users are provided. A user device in proximity to a customer premise device may be detected. The customer premise device may be configured to output programming content received from a service provider. An identifier of the detected user device may be determined. Based at least in part on the identifier, an identity of a user may be determined. Based at least in part on the identity of the user, content that is output by the customer premise device may be customized.

A method of reconfiguring an internet protocol (IP) address during handover by a mobile station (MS) is disclosed. In the method, the MS transmits a ranging request message to a base station (BS) in a network and then receives a ranging response message which includes a IP address refresh parameter from the BS in the network. Thereafter, the MS transmits an IP address configuration network entity search message via the BS, receives an IP address configuration network entity search result message from the network via the BS, and transmits an IP address configuration request message to the network via the BS. Lastly, the MS receives an IP address configuration response message from the network via the BS.

In a broadband antenna unit having a ground plate and an elliptically shaped radiation element disposed at an upper portion of the ground plate in a plane where the ground plate extends, the ground plate has a semi-elliptically shaped upper edge and a lower portion where both side corner portions are deleted with a central portion left. The ground plate and the radiation element are formed on a substrate.

Multiple-wavelength VCSEL array apparatus and method having a high contrast grating (HCG) mirror which can be implemented on a single substrate in which only the dimensions of the HCG (e.g., duty cycle or the period) need be changed to alter the wavelength of a given VCSEL in response to changing the reflectivity phase of the HCG mirror. The HCG can be defined by any desired lithographic process. By using a broadband HCG mirror a large wavelength span over 100 nm is provided, such as covering the entire C-band. The HCG multi-wavelength VCSEL array enables single-transverse mode emission and polarization control and scalability with respect to wavelength.

Systems and methods for customizing broadband content based upon passive presence detection of users are provided. A sample of ambient audio may be collected by a customer premise device configured to output programming content received from a service provider. One or more audio components associated with the output of the customer premise device may be removed. Following the removal, a remainder of the collected sample may be compared to one or more stored user voice samples. Based at least in part on the comparison, one of an identity of a user or one or more user characteristics may be determined. Based at least in part on the determination, the content output by the customer premise device may be customized.

The present invention relates to a broadband wireless communication system, and disclosed are a method and an apparatus for executing a carrier management process in a broadband wireless communication system which supports multi-carrier. According to one embodiment of the present invention, a method for executing carrier management by a terminal in a communication system which supports the multi-carrier comprises the steps of: receiving a signal which indicates control channel allocation for a 1st carrier from a base station; receiving a signal which indicates control channel de-allocation for a 2nd carrier from the base station; activating the 1st carrier if the 1st carrier on which the control channel allocation is indicated is in an inactivate state; and inactivating the 2nd carrier if the 2nd carrier on which the control channel de-allocation is indicates is in an activated state.

The invention discloses a broadband MIMO radio frequency transceiving system for the next-generation wireless communication network. The system comprises a receiving module, a local oscillation module, a transmitting module, a power supply module and a control module. In the invention, the frequency utilization efficiency of over 10bit/Hz is realized through the adoption of a 100MHZ channel bandwidth and six-transmitting and six-receiving MIMO configuration. Site tests show that the system can support the data transmission rate of over 1Gbit/s and meets the requirements of International Telecommunications Union on the next-generation digital mobile communication system (4G). The system fully combines and takes full advantage of a superheterodyne architecture and a zero intermediate frequency architecture, adopts an asymmetric structure, adopts the zero intermediate frequency architecture in the transmitting module and adopts the superheterodyne architecture in the receiving module. The way reduces the complexity of circuits and the costs of the system while guaranteeing the performances of the system. The local oscillation module of the system adopts an innovative design, so that the cost of the system and the complexity of the circuits are reduced.

A method and system enables distributed transaction oriented telephony functionality for telephony services in a broadband packet network. Exemplary distributed transaction oriented telephony functionality includes Intelligent Network (IN) and Advanced Intelligent Network (AIN) functionality accessed through the legacy Common Channel Signaling (CCS) network using transaction-based messaging protocols, such as Intelligent Network Application Part (INAP) and/or Transaction Capability Application Part (TCAP) protocols. A functional content of a transaction message, such as a TCAP message, is encapsulated in a Protocol Data Unit (PDU) of the broadband packet network. The PDU is forwarded through the broadband packet network to a second network element. The functionality is then invoked using the encapsulated transaction message functional content. In preferred embodiments the PDU is a Session Initiation Protocol (SIP) envelope, into which TCAP message functional content can be mapped.