50 results about "Broadband" patented technology

A wireless device uses position-indicating data to determine its location in relation to multi-layered wireless networks that the device may see concurrently. If location information is available, the device employs a user-defined priority table to select the order of user-contracted available networks. If location information is unavailable, the device employs a technology learning table to automatically adapt CAI protocol options (e.g., GSM, cdma2000, IS-136, IEEE 802.11x, etc.) to search for an available network. Information is gathered and stored in databases within the device to allow automatic adaptation to multiple wireless networks. The device provides unique access to each wireless network with which a user has contracted, without the intervention of any “anchor” network. This allows the device to obtain network service no matter what network it is traveling through and allows the user to traverse multiple wireless networks with seamless access to multiple applications and services provided by those networks.

The invention relates to an infrared spectrum enhancement and detection method and an infrared spectrum enhancement and detection device based on a graphene nano antenna. The device comprises a light source, a collimating lens, a one-point detector and an MEMS (micro-electromechanical system) grating light modulator based on the three-dimensional graphene nano antenna. Infrared light emitted from the light source is irradiated to the MEMS grating light modulator based on the three-dimensional graphene nano antenna through the collimating lens, an interference signal of the MEMS grating light modulator can be detected by the one-point detector, a detection signal is demodulated through Fourier transform, a spectrum is reproduced, and trace molecules are detected according to obtained spectrum information; the device has the advantages of good stability, high response speed, high sensitivity, dynamic tunable broadband, high enhancement factor and the like, can be expected to greatly increase the variety of substances detected by an infrared spectroscopic analysis technology and improve the detection sensitivity of the infrared spectroscopic analysis technology, and has a huge development space and a wide application prospect.

A method for dynamically allocating signal processing resources in a wireless multichannel broadband base station (BBS) for a cellular communications network including determining a number of available channel processor (CP) resources which are unused in a BBS. In response to notification of a subscriber call to be processed by a cell of the BBS, a determination is made as to whether the number of available CP resources is at least one. If so, then the call is assigned to any available CP resource in the BBS. Each of the CPs in the BBS process any of a plurality of traffic channels contained on any frequency channel assigned to the BBS. In addition, an apparatus for practicing the method is disclosed.

The system comprises: stream-media releasing end, index server, client side, server for recording the watched program at customer end, and time transmission center. The method comprises: 1) said stream-media releasing end gets the precise time value from the time transmission center; 2) the stream-media releasing end disassembles the stream-media data into multi stream-media data fragments used by P2P system; labeling time mark on each fragment; sending the fragments to the network; 3) the client side gets the stream-media fragments data with said time mark from the stream-media release end or other P2P client sides; the client side extracts the time mark of each fragment; 5) the client side converts the time mark into the precise records of programs watched by user; collecting the precise records from all client sides.

The invention belongs to the field of broadband reconfigurable micro-strip antennas and particularly relates to a mobile phone antenna with a reconfigurable directional diagram. The mobile phone antenna with the reconfigurable directional diagram is used for receiving and transmitting wireless signals in communication devices such as a mobile phone and an ISM communication device. The mobile phone antenna with the reconfigurable directional diagram is composed of two medium substrates, four bending-shaped passive vibrators, four horizontal straight passive vibrators, six switches, two dipole excitation vibrators, two perpendicular parasitic vibrators, a balancer and a coaxial feeder. The first bending-shaped passive vibrator, the first horizontal straight passive vibrator, the second horizontal straight passive vibrator and the second bending-shaped passive vibrator are sequentially connected together to form a first connecting structure through the switches. The third bending-shaped passive vibrator, the third horizontal straight passive vibrator, the fourth horizontal straight passive vibrator and the fourth bending-shaped passive vibrator are sequentially connected together to form a second connecting structure through RF-PIN switches. The antenna is small in SAR value, low in radiation, high in efficiency, simple in structure, convenient to machine and low in cost.

The invention discloses a multiplication type organic photoelectric detector with narrowband and broadband optical detection capabilities. The multiplication type organic photoelectric detector comprises a transparent substrate, a transparent anode arranged on the transparent substrate, an anode modification layer arranged on the transparent anode, an active layer arranged on the anode modification layer, and a semi-transparent metal cathode arranged on the active layer, wherein the semi-transparent metal cathode is one of aluminum, silver and gold, and the thickness is 10-30 nanometers. The invention also discloses a preparation method of the multiplication type organic photoelectric detector. According to the multiplication type organic photoelectric detector, double incident windows areprovided, a single device can realize narrowband and broadband optical detection, and the weak light detection capability is great.

The invention discloses a telecommunication broadband wireless network access method and wireless network access equipment and aims at providing a shared telecommunication wired access broadband to simultaneously provide a shared broadband access circuit service for wired broadband contracted users and public wireless roaming users. The invention uses the following method to realize the wireless broadband access: the public wireless roaming user can get an access to the wireless network access equipment through a special wireless interface; and after the necessary information processing, the public wireless roaming user can get an access to operator certificate and service devices via a broadband route rented by the wired user to complete the data recovery, security certificate and public network service provision. The wireless network access equipment comprises more than one wireless circuit access modules which can identify internal users and public roaming users through special design; the wireless network access equipment can lead the identified internal users to be linked with an internal local area network firstly; and for identified external roaming users, the wireless network access equipment provides public network broadband services by building up a link which is connected with the certificate and service device of the telecommunication operator via a wired broadband circuit.

An orientation-insensitive ultra-wideband coupling capacitor. The orientation-insensitive ultra-wideband coupling capacitor includes a plurality of external surfaces, a low frequency portion, and a high frequency portion. The high frequency portion is so disposed on, and electrically connected to, the low frequency portion so as to allow the orientation-insensitive ultra-wideband coupling capacitor to work identically when mounted on any external longitudinal surface of the plurality of external surfaces thereof and thereby be readily SMT compatible without regard to special orienting procedures.

Methods and systems for identifying and preferring certain content transmissions over others for transport in a multiple subscriber computer network, such as public broadband access network. Preferred transport includes exempting participating content transmissions from bandwidth preservation policies, such as byte capping or rate limiting, or permitting the broadband access network provider to bill for certain identified content transmissions. The participating content transmissions are identified on a number of bases including by sending or receiving application, or by use of tags embedded by the content originator, sender or distributor. Those tagging techniques are also usable to enforce the content owner's distribution rights.

The invention provides a method for asynchronous positioning of an ultra-wideband sensor network based on compressive sampling. The method comprises the following specific steps that (1) an anchor node 1 broadcasts ultra-wideband pulse 1; (2) other anchor nodes and a TAG node carry out compressive sampling on a received signal to obtain a time of arrival of the pulse 1; (2) the TAG node broadcasts ultra-wideband pulse 2; (4) each anchor node respectively carries out compressive sampling on the received signal, the anchor node 1 records a pulse round-trip time, and other anchor nodes obtain a time of arrival of the pulse 2 and respectively report the two times of arrival to the anchor node 1; and (5) the anchor node 1 computes a coordinate position of the TAG. On one hand, a compressive sampling method is applied to an ultra-wideband sensor network positioning system, and the ultra-wideband pulse is obtained at a sampling rate which is further lower than Nyquist. On the other hand, each node does not need to carry out clock synchronization strictly, the complexity is lower, and a positioning error of an asynchronous ultra-wideband system can be effectively reduced.

The invention discloses a visible light communication based bridging system which comprises a plurality of LED optical access points. One LED optical access point is set to be in an optical access mode and connected with a network through broadband access equipment, and the rest LED optical access points are set to be in an optical bridging mode and connected with each other through a power line carrier bus and/or visible light to realize communication connection. By the visible light communication based bridging system in the technical scheme, a distributed system of visible light communication is formed through a bridging technique, coverage area and transmission rate of a visible light communication system are increased, typical safety and radiationless performance are given into play for different scenes, and flexibility and convenience of the whole network structure are improved greatly.

The invention provides an LTE (Long Term Evolution) broadband cluster system transmission switching method, equipment and a system. According to the invention, when standby core network equipment acquires a heartbeat anomaly message of primary core network equipment, the standby core network equipment establishes connection with a scheduling server; the standby core network equipment allocates a first Internet protocol (IP) address for a wireless router and configures functions of the wireless router; the wireless router sends a first tunnel building message to a GRE server according to the first IP address; the GRE server builds a GRE tunnel with the wireless router according to the first IP address in the first tunnel building message, and transmits messages to attached equipment of the wireless router through the GRE tunnel. Through setting the GRE server, the GRE tunnel is built between the wireless router and the GRE server after core network switching, messages are transmitted to the attached equipment of the wireless router through the GRE tunnel, routing information of the attached equipment is not required to be artificially configured, and message transmission after core network switching is realized efficiently.

The invention discloses a broadband microwave frequency source circuit with low phase noise. The reference frequency is input into a digital phase detector and a low phase noise amplifier respectively. The output end of the digital phase detector is connected with the input end of a passive loop filter, and the output end of the passive loop filter is connected with the first end of a plurality ofactive loop filters respectively. The output of the low phase noise amplifier is connected to the input of the sampling phase detector. The output of the sampling phase detector is connected to the input of the first set of multiplexers, the output terminals of the first group of multiplexers are respectively connected with the second terminals of a plurality of active loop filters, the third terminals of the plurality of active loop filters are respectively connected with the input terminals of the second group of multiplexers, the output terminals of the second group of multiplexers are respectively connected with a plurality of VCOs, and a plurality of VCOs select one output. The selected VCO output signal is fed back to the sampling phase detector as the system output and fed back tothe digital phase detector through the N divider. The invention realizes the effects of wide frequency band and low phase noise.

The invention relates to a wireless wideband access network, equipment and an access method thereof; wherein, the access method comprises the concrete steps as follows: at least a gateway node and at least a network node form a corresponding wideband access network; the gateway node and the network node respectively comprise a self-help gateway node and a self-help network node which are achieved by the terminal equipment with prearranged processing function in the network; furthermore, the gateway node is connected with a wire network, carries out the information interaction by wires, and provides the wireless access service by the gateway node and the network node; in the invention, the terminal equipment with the prearranged processing function in the network is used as the self-help gateway node and the self-help network node, and a network which can provide the wideband access service is formed in a self-help way; therefore, by the realization of the invention, the existing wire access resource can be effectively utilized, and the wideband wireless access service in a bigger area (including global network range) can be achieved at lower cost.

The system includes equipment in broadband collection layer, broadband access equipment, users' PCs, as well as server in monitor system, working unit at user end of monitor system. The server is connected to equipment in broadband collection layer, broadband access equipment, and working unit at user end of monitor system respectively. Working unit at user end of monitor system is connected to user's PC. Through equipment in broadband collection layer, the server obtains data of online user. Through broadband access equipment, server freezes up broadband port illegal used; or through equipment in broadband collection layer, server freezes up account number illegal used. The invention stops making connection to broadband without permission technically so as to increase economic benefit and make telecom department manage broadband users easily.

Provided is a Direct-Sequence Ultra-Wideband (DS-UWB) terminal device. A mobile communication terminal device using a DS-UWB scheme may simultaneously or sequentially transmit and receive a signal in a low-frequency band and a signal in a high-frequency band, and may simultaneously process the signals. Therefore, the DS-UWB scheme may be applied to a function division technique.

The invention provides a photovoltaic multi-connected air conditioner carrier communication coupled transmission method and carrier communication coupled transmission circuit. The first signal coupled access pin of a broadband carrier module is connected with the copper pipe of a photovoltaic multi-connected air conditioner through a first Y capacitor. The second signal coupled access pin of the broadband carrier module is connected with the positive end or the negative end of the DC power supply line of the photovoltaic multi-connected air conditioner through a second Y capacitor. The signal coupled access pins of the broadband carrier module are respectively connected with the copper pipe and the positive end or the negative end of the DC power supply line through the Y capacitors so that the problems of being high in signal transmission attenuation, liable to be interfered, instable in impedance and complex in branch in the prior art can be solved.

The invention discloses a bending-insensitive broadband dispersion flat single-mode optical fiber which includes a fiber core center round layer, a first annular layer which wraps the fiber core center round layer, a second annular layer which wraps the first annular layer, and a uniform outer cladding layer which wraps the second annular layer, wherein the refractivity of the first annular layer is lower than the refractivity of the uniform outer cladding layer. The optical fiber spreads in an improved total internal reflection method. The high-order mode cutoff wavelength is smaller than 1400nm. The dispersion minimum value under a wavelength of 1400nm is larger than 2.0 ps/(nm*km). The effective area under a wavelength of 1550nm is not smaller than 70.0 mum<2>. When the mode field diameter is not smaller than 9.30 mum and the bending radius is 5mm, the bending loss is from being smaller than 0.2dB/100rings to being smaller than 0.004dB/100rings. Under a wavelength of 1700nm, the dispersion maximum value is from being smaller than 10.7 ps/(nm*km) to being smaller than 10.1 ps/(nm*km).

Wideband digital distributed communications systems (DCSs) employing reconfigurable digital signal processing circuit for scaling supported communications services are disclosed. The DCS includes a head-end unit that includes front end downlink signal processing circuit to receive and distribute downlink communications signals for communications services (i.e., communications bands) to remote units. The remote units also include front end uplink signal processing circuits to receive uplink communications signals to be distributed to the head-end unit. The front end signal processing circuits are either equipped with broadband filters, or such filters are eliminated, to allow the DCS to be scaled to pass added communications bands. The front end processing circuits include analog-to-digital conversion (ADC) circuits for converting received analog communications signals into digital communications signals so that the digital communications signals can be processed by digital signal processing circuit that can flexibly be configured and reconfigured to support the added communications bands.

The invention relates to a broadband out-phase power combiner. The broadband out-phase power combiner comprises a switch power amplifier, a Chireix power combiner and a bandwidth extension circuit; the Chireix power combiner is connected between the switch power amplifier and a load in series; and the bandwidth extension circuit is connected between the Chireix power combiner and the load in series. Two out-phase broadband modulation signals are input to the circuit simultaneously, the positive signal is input to the upper branch circuit, the negative signal is input to the lower branch circuit, the two signals are integrated by the Chireix power combiner and then output by the bandwidth extension circuit, and the output signal is absorbed by the load. According to broadband out-phase power combiner, the quality factors of a matching circuit are reduced by adopting the bandwidth extension circuit by means of step impedance matching, a big influence is achieved on combination of communication signals such as the WCDMA signal and the LTE signal which have the certain bandwidth, and then the linearity, the output power and the efficiency in the overall passband are influenced.

A monopole broadband antenna based on a solar cell grid line structure comprises an epitaxial layer used for providing an installation substrate surface; an external exciter which is used for providing energy excitation for the monopole broadband antenna; and a grid line structure which is used for receiving the energy excitation of the external exciter and radiating energy outwards, is attached to the mounting substrate surface and is connected with the external exciter. According to the monopole broadband antenna based on the grid line structure of a solar cell, the grid line structure of the solar cell is creatively adopted for radiation, the single solar cell can work, the structure of the solar cell is fully utilized, and the solar cell and the broadband antenna are integrated, so that the solar cell antenna is simple in structure and wider in frequency band, the 3.4 GHz-6.3 GHz frequency bands are covered, the system complexity is reduced, and the monopole broadband antenna has practical application and popularization value.

An ultra-wideband has an elongated grounding plate disposed horizontally with a long front edge defined thereon. A connecting portion extends upwards from an end of the front edge. A first antenna radiator includes a first radiating strip extended from a side of the connecting portion and a second radiating strip connecting with a free end of the first radiating strip. A third antenna radiator includes a third radiating strip suspended over the grounding plate, a fourth radiating strip connecting with an end of a long front edge of the third radiating strip and an upper side of the second radiating strip, a fifth radiating strip extended downwards from the long front edge of the third radiating strip connecting with the connecting portion. A third antenna radiator extends downwards from a middle of the long front edge of the third radiating strip. A feeding point disposes on the second radiating strip.

The invention provides a device for carrying out high-potential online energy taking on a high-voltage overhead line. The device comprises the following components of: a suspension potential conductor; a conductor connecting piece which is connected to the suspension potential conductor; a discharge electrode which is connected with the conductor connecting piece through an insulating piece; a high-potential conductor, wherein the high-potential conductor is connected to the high-voltage overhead line, a discharge gap being formed between the high-potential conductor and the discharge electrode; and a discharge channel is formed between the high-potential conductor and the discharge electrode by using a phase voltage from the high-voltage overhead line, so that power can be supplied to anexternal load connected with the discharge electrode and the conductor connecting piece based on electric power generated by the discharge channel. According to the device of the invention, the discharge gap is formed between the discharge electrode and the high-potential conductor, and the potential difference between the discharge electrode and the high-potential conductor causes air gap breakdown of the discharge gap, so that charges induced on the discharge electrode are transferred to generate broadband current, and the broadband current is transmitted to the external load through the conductor connecting piece and the discharge electrode so as to supply power to the external load.