摘要:
The invention relates to an apparatus and a method for energy optimized routing of traffic participants in road traffic (user). The method comprising the step of receiving a first set of data (1sd) from at least a traffic participant (user), comprising at least a current position (cur_pos) and a destination (dest) of said traffic participant (user). Further said method comprises the step of receiving a second set of data (2sd) from at least a traffic control equipment (tce) comprising at least a current status (cur_stat) of said traffic control equipment (tce). At least one of said first set of data (1sd) and said second set of data (2sd) is transmitted by wireless telecommunication. Said method further comprises the step of processing said received first set of data (1sd) from said traffic participant (user) and said received second set of data (2sd) from said traffic control equipment (tce). Said processing comprises at least calculating for said traffic participant (user) a third set of data (3sd) comprising at least an optimum path (opt_path) and an optimum speed (opt_speed), based on said first set of data (1sd) and based on said second set of data (2sd). Said method further comprises transmitting said third set of data (3sd) to said traffic participant (user), for controlling said path and said speed of said traffic participant (user) to equalize the speed of said traffic participant (user).
摘要:
The present invention relates to a transceiver module (10) for transmission and reception of radio signals being simultaneously operable in multiple frequency bands and being connectible to an antenna module (40). The transceiver module (10) comprises the power amplifier component (28) which is simultaneously operable in more than one frequency band. The invention further relates to a base station comprising said transceiver module (10) and a mobile station comprising said transceiver module (10).
摘要:
The invention relates to an antenna arrangement (1) for providing direct air-to-ground communications, comprising: an antenna array (2) with a plurality of antenna elements (A1 to An), preferably in a linear configuration, and a feeding network (3) with a plurality of antenna paths (P1 to Pn) for feeding an RF signal (RF in) to the plurality of antenna elements (A1 to An), wherein the feeding network (3) is adapted to generate phase shifts (α 1 to α n ) and possibly also unequal amplitudes (r 1 to r n ) on the antenna paths (P1 to Pn) such that the antenna array (2) provides an approximated target gain pattern , in particular an approximate cosecant squared gain pattern, in the elevation plane for a range of elevation angles from an elevation limit angle with maximum gain up to an elevation angle of 90°. The invention also relates to a base station (BS) and to a radio network (RN) comprising such an antenna arrangement (1), as well as to a corresponding method for providing direct air-to-ground communications
摘要:
The communication system (1) presented here comprises a base transceiver station (BTS) equipped with a scanning receiver (10) and an air interface, i.e. an antenna (AN). The scanning receiver (10) is configured for a scanning operation (SC) for scanning a broad RF communication frequency range of RF signals received through the antenna (AN), monitoring means (11) configured for monitoring the scanned RF communication frequency range, detecting means (12) for detecting actually occupied frequency resources (OR) and free, momentarily unused chunks (FR) of the scanned broad frequency range, scheduling means (13) for scheduling and allocating RF resources and occupying one or more of the detected unused chunks (FR) and adapting means (14) for adapting the communication from/to each terminal (T) on a dedicated standard and on at least one of the now occupied frequency chunks depending on a specific standard and capability of the terminal (T) and type of the communication service as desired by the user (U).
摘要:
The invention relates to a network element for a multiband mobile communications system, the network element comprising: a first set of transmission filters and a second set of reception filters, each filter having a stop band, a pass band around a carrier frequency, an input port, an output port, wherein each filter is designed for maximum reflection at the output port in the stop bands; a first set of quarter-wavelength transmission lines connecting the first set of transmission filters with a first connection point and a second set of quarter-wavelength transmission lines connecting the second set of reception filters with a second connection point. The network element further comprises: a first circulator with a first, a second and a third port, wherein the first port is coupled to the first connection point, and the third port is coupled to a first termination; a second circulator with a forth, a fifth and a sixth port, wherein the forth port is coupled to the second port of the first circulator, and the fifth port coupled to an antenna; a third circulator with a seventh, an eight and a ninth port, wherein the seventh port is coupled to the sixth port of the second circulator, the eight port is coupled to the second connection point and the ninth port coupled to a second termination.
摘要:
The present invention relates to a method and apparatus for multi-band testing. A first multi-carrier signal in a lower frequency band of the maximum radio bandwidth of the multi-band transmitter is received. The first multi-carrier signal has a narrowband carrier located at the higher edge of the lower frequency band and a wideband carrier. A second multi-carrier signal in a higher frequency band of the maximum radio bandwidth of the multi-band transmitter is received. The second multi-carrier signal has a narrowband carrier located at the lower edge of the higher frequency band and a wideband carrier. Between the lower frequency band and the higher frequency band, a frequency gap is present. The wideband carrier in the lower frequency band is located in the lower frequency band such that its third order intermodulation product with the narrowband carrier in the lower frequency band is generated in the middle of the frequency gap. The wideband carrier in the higher frequency band is located in the higher frequency band such that its third order intermodulation product with the narrowband carrier in the higher frequency band is generated in the middle of the frequency gap. The transmitter test is performed with the first and second signal.
摘要:
A controller (2) for controlling an operating characteristic of an amplifier circuit (4) comprising at least a first amplifier (6) and a second amplifier (8) coupled to an output (10) of the first amplifier (6), wherein the first amplifier (6) is powered from a first power supply (12) by a first energy supply signal (14) and the second amplifier (8) is powered from a second power supply (16) by a second energy supply signal (18). The controller comprises a monitoring interface (20) operable to receive monitoring information indicative of a signal characteristic of a signal amplified by the amplifier circuit and a control interface (22) operable to provide a control signal (24) being operable to modify at least one of the group of the first energy supply signal (14) and the second energy supply signal (18) such that a power efficiency of the amplifier circuit (4) is increased.
摘要:
The invention relates to a method of providing a multi-carrier signal (mc) comprising a plurality of single-carrier signals (sc_1, .., sc_m), wherein m many single-carrier signals (sc_1, .., sc_m) are combined to obtain said multi-carrier signal (mc). According to the present invention, said method is characterized by: - providing n many instances (mc1_1, .., mc1_n) of a first stage multi-carrier signal by combining said m many single-carrier signals (sc_1, .., sc_m) within a first combining stage, wherein said n many instances (mc1_1, .., mc1_n) of said first stage multi-carrier signals have a predetermined amplitude and phase relationship to each other, - combining said n many instances (mc1_1, .., mc1_n) of said first stage multi-carrier signal to obtain said multi-carrier signal (mc).
摘要:
The present invention relates to a transmitter for simultaneously transmitting plural signals. The transmitter comprises at least two converters 10a and 10b. Each converter 10a and 10b is adapted to convert an input signal into an analogue output signal. Each of said analogue output signals has a particular carrier frequency A combiner 40 combines the analogue signals from the converters 10a and 10b. The combiner 40 receives the analogue signals and outputs a single combined analogue signal. An amplifier (20) receives the combined analogue signal and outputs an amplified analogue signal to an antenna.
摘要:
The present invention relates to a method and apparatus for multi-band testing. A first signal in a lower frequency band of the maximum radio bandwidth of the multi-band transmitter is used. The first signal has a carrier located at the lower edge of the lower frequency band. Further, a second signal in a higher frequency band of the maximum radio bandwidth of the multi-band transmitter is used. The second signal has a carrier located at the higher edge of the higher frequency band. Further, a third signal in a middle frequency band of the maximum radio bandwidth of the multi-band transmitter is used. The middle frequency band is located asymmetrically between the lower frequency band and higher frequency band. The transmitter test is performed with the first, second and third signal.