摘要:
A method for sharing or jointly using a GERAN (GSM EDGE Radio Access Network) mobile radio access network by at least a first mobile radio network operator and a second mobile radio network operator includes providing a radio access network for joint use by the at least first and second mobile radio network operators, wherein the radio access network provides at least a first radio frequency channel and a second radio frequency channel, the at least first and second radio frequency channels having each a TDMA frame (Time Division Multiple Access frame) with eight time slots (TS0 to TS7), and associated dedicated time slots of the radio access network with the mobile radio network operators.
摘要:
Process and land mobile system for operating a cellular land mobile network in which in case of an overload certain resources of the land mobile network currently being used can be released in order to be available for higher priority applications, and resources can be usable at the same time by several applications, characterized in that selection of the resource to be released takes place, for all resources under consideration an efficiency factor being determined and the resource with the lowest efficiency factor being released.
摘要:
A circuit arrangement for operating a low-pressure discharge lamp may include a voltage source with two terminals; switches; and a series resonant circuit; a controller configured to control the switches such that an AC voltage is applied to the resonant circuit; a PTC thermistor coupled on one side to a circuit point of the resonant circuit and on the other side, at least one of via a diode, to the first terminal of the voltage source and, via a diode to the second terminal of the voltage source; a resistive element connected in series with a diode in the circuit between a terminal of the voltage source and the PTC thermistor; and an evaluation device configured to tap off the voltage drop across the resistive element and being coupled to the controller in order to deactivate the controller.
摘要:
A method for remotely controlling a device by a fixed transceiver station in a radio cell of a cellular mobile telecommunications network, the cellular mobile telecommunications network being at least one of a Long Term Evolution (LTE) network or a Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN), includes: transmitting to the device on a control channel, by the fixed transceiver station, control information specific to the radio cell; wherein the control channel is a channel or a portion of a channel used to broadcast location information; wherein the control information comprises an identification part for specifying the device; and wherein the device is not required to have a registration with the network.
摘要:
The invention relates to a method for renewing program files of a programmable, mobile telecommunications terminal, according to which the program files are transmitted from a telecommunications network to the telecommunications terminal via the air interface. The aim of the invention is to allow the program files to be renewed in a simple and cost-effective manner and with little effort. To achieve this, the terminal type is determined by the telecommunications network, new program files that exist in devices of the telecommunications network, or are available elsewhere are determined and made available for the identified terminal type and the existing new program files are automatically transmitted to the terminal via the air interface.
摘要:
A circuit arrangement for starting and operating one or more discharge lamps comprising a self-oscillating inverter (1), a resonant circuit (2), a low-pressure discharge lamp (5), a starting voltage controller (3) with a variable resistor (R1), and a lamp filament heating controller (4), wherein the lamp filament heating controller includes an additional variable resistor (R2) in the resonant circuit, which variable resistor measures the current flowing in the resonant circuit, and, in the event of a threshold value being exceeded, disconnects the half-bridge transistor (Q2) and thus limits the current flowing in the resonant circuit, this additional variable resistor (R2) being bypassed by a switch (Q3), depending on the lamp state.
摘要:
The invention relates to a method for reduction of the incoming delay time in network-initiated data transmission in GPRS-mobile communication networks, wherein data transmission is initiated to a mobile communication terminal device in a ready state via a requesting network node, wherein the first data packet to be sent by the requesting network node has already been transmitted to the base station subsystem together with a Paging Request message.
摘要:
A method for operating at least one light source, in which an input voltage (Uin) is converted into an AC output voltage, the AC output voltage providing a power for operating at least one light source (5), wherein the frequency of the output voltage is frequency-modulated with a triangular modulation signal if the input voltage (Uin) is a DC voltage.
摘要:
A circuit arrangement for operating a low-pressure discharge lamp may include a voltage source with two terminals; switches; and a series resonant circuit; a controller configured to control the switches such that an AC voltage is applied to the resonant circuit; a PTC thermistor coupled on one side to a circuit point of the resonant circuit and on the other side, at least one of via a diode, to the first terminal of the voltage source and, via a diode to the second terminal of the voltage source; a resistive element connected in series with a diode in the circuit between a terminal of the voltage source and the PTC thermistor; and an evaluation device configured to tap off the voltage drop across the resistive element and being coupled to the controller in order to deactivate the controller.
摘要:
The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.