Abstract: A high frequency power amplifying apparatus is provided with an amplifying section with a plurality of amplifying stages connected in cascade. A power control signal is supplied to the amplifying section through a control terminal so as to control the output of the high frequency power amplifying apparatus. Each of the amplifying stages has a gain smaller than that of a preceding stage. Gain control signals generated from the power control signal are supplied to the respective amplifying stages. Dividing resistors are connected in series with one another between the control terminal and a reference potential so as to divide the voltage of the power control signal to thereby generate a plurality of different gain control signals. Different ones of the gain control signals are supplied to the respective amplifying stages, an absolute value of a voltage of the gain control signal applied to each stage is larger than that applied to an earlier preceding stage.

Abstract: Terminals having analog/digital telephone functions as well as data exchange functions are typically used by users who have a lower skill level than the average user of a personal computer. Therefore, such a terminal should be as self-supporting and independent as possible, which could be realized by selecting and storing addresses of access providers and/or server providers in a non-mechanical terminal memory, which could further comprise software for performing protocols. Then the terminal is almost completely ready for use, with complex and time-consuming installment by a user no longer being necessary.

Abstract: Digital cellular telephone with a variable rate vocoder is used with a number of different classes of service. A first class of service provides always constant bit rate to the telephone. A second class of service is the variable bit rate which changes the class of service depending on the traffic on the system. A third class of service is always-degraded service at a presumable lower price.

Abstract: The penalties associated with relying on layer-4 to handle packets lost as a result of a handoff can be reduced by forwarding, in response to a handoff request from a first base station to a second base station, at least one layer-2 frame of a layer-3 packet destined to/from the wireless terminal that has been passed down from layer-3 to layer-2, and so is indicated to have been transmitted at layer-3 even though not all of the layer-2 frames of the layer-3 packet have actually been transmitted. In one embodiment of the invention, each of the at least one layer-2 frames may be encapsulated together in a special layer-3 packet that is transferred from the first base to the second base station in the usual manner of inter-base-station communication. Advantageously, packets are not lost at layer-4 due to handoffs. Thus, layer-4 retransmissions are not required, and so delays in the network are reduced.

Abstract: A system (FIG. 2) and method for billing in a radio telecommunications network, comprising: means (HLR) for storing billing class identifier information associated with a predetermined subscriber or subscriber services; and charging gateway means for receiving call information together with the relevant billing class identifier information and for passing the call information to a relevant billing system.

Abstract: Methods and systems are provided which calculate a carrier to interference ratio of a channel using an approach which accounts for variations in the channel response characteristics over the estimation evaluation time period. The time variations may be taken into account by various alternative approaches including breaking the sample period into a series of sub-sample estimation windows and applying a different constant channel response estimate to each sub-sample estimation window or by applying a time varying model to the channel when generating the channel response estimate (such as a least squares error fit to a first order or higher order equation). Accordingly, the systems and methods of the present invention may provide for improved estimates of the carrier to interference ratio, particularly for channels subject to multi-path fading effects such as those which may result from movement of a mobile terminal during measurements of the channel.

Abstract: A product and system is disclosed for intelligently controlling the number of amplifier modules that are active in a linear amplification system. By exercising such control, the system can avoid using unnecessary power. The invention monitors the system and gathers information from signals associated with the system, particularly information concerning signal power. A control functionality evaluates the gathered information to decide how many modules are necessary to sufficiently operate the amplification system or to decide if it has been commanded to perform certain functions. Once this decision is made, the control functionality communicates control signals to the power amplification modules to activate the needed or desired number of modules and deactivate the unneeded or undesired number of modules. Likewise, the control functionality configures the splitter and the combiner according to the number of needed or desired amplifier modules. This gathering, evaluation, and control is conducted continuously.

Abstract: A mobile radio communication terminal automatically disconnects a call after completion of a telephone conversation. A speaker signal detector generates a first detection signal upon detection of an audio signal received from another party, and a microphone signal detector generates a second detection signal upon detection of an audio signal input from a microphone. A controller disconnects an established speech path when the first and second detection signals are not input from respective speaker signal detector and the microphone signal detector, for a predetermined time.

Abstract: The characteristics of a radio channel is estimated over which pilot signals are transmitted consecutively together with TPC signals in the cdma2000 system. From the pilot signals demodulated into baseband signals, obtained are correlated values of a field of the pilot signals preceding the TPC field and of the TPC signals with the spread spectrum codes. Both of the correlated values are operated to determine data represented by the TPC signals. The data thus determined are removed from the TPC signals to restore the pilot signals which would have appeared unless multiplied with the spread spectrum codes in the TPC bit field. The characteristics of the radio channel are estimated from the pilot signals including the TPC bit field from which the data determined have been removed.

Abstract: A system and method for notifying a remote device of a low battery capacity condition in a wireless communications system is disclosed. A detector monitors the capacity of the battery in a wireless device receiving operational power from the battery for a low capacity condition. A control system coupled to the detector sends a low battery capacity status signal to the remote device upon detection a low battery capacity condition. While the battery is in a low capacity condition, communications between the wireless device and the remote device may be maintained until the low battery capacity condition is corrected.

Abstract: A wireless device (104) selectively opreates near protected sites (110) including equipment at least intermittently using an operating frequency. The wireless device upon detecting a beacon signal from a beacon system (112) ascertains interference parameters. The interference parameters are used to control operation of the wireless device to prevent harmful interference with the equipment at the protected site. The operation is selectively altered depending upon the interference parameters ascertained. The wireless device can be intelligently controlled from a control system (105).

Abstract: A watch type portable radiotelephone is disclosed which includes a body element having upper and lower case frames, data input means, an LCD unit for outputting inputted data and displaying a variety of information, an antenna unit electrically connected to a receiver and a transmitter, a speaker unit, and a microphone unit. The radiotelephone also includes a holding part formed integrally with the lower case frame of the body element. The holding part at least partially defines a receiving space in which a battery pack for supplying power to the body element is able to be received. The holding part secures the battery pack to the body element. A locking projection for locking and unlocking the battery pack to and from the body element is formed on the battery pack. An electrically conductive connection assembly is provided for electrically connecting the body element and the battery pack with each other.

Abstract: A radio transceiver circuit which includes an antenna, a transmitter, a receiver, an antenna switching circuit for selectively connecting the transmitter and the receiver to the antenna, and a power source for driving the transmitter and the receiver. The antenna switching circuit includes two semiconductor elements. The current (|BRX, |BTX) provided by the power source to the receiver and to the transmitter is directed through the respective semiconductor elements which are each set to its conductive electrical state by the respective current (|BRX, |BTX) and thereby selectively coupling the radio signal between the receiver and the transmitter to the antenna.

Abstract: A small-sized flat antenna mounted on a portable radio communication device is available for a narrow bandwidth, and the resonance frequency of the flat antenna varies due to interference between the flat antenna and surrounding dielectrics such as a housing and a human body. As a result, the transmission efficiency and reception sensitivity of the antenna have been impaired. A communicating section (constructed of a coaxial line or a microstrip line)is arranged in a portable radio communication device having a circularly polarized antenna for satellite communication, so that an appropriate distance is provided not only between a housing of the portable radio communication device and the antenna but also between a human body and the antenna.

Abstract: A rake receiver in accordance with an exemplary embodiment of this invention is configurable by an external agent (e.g., microcontroller, DSP, or state machine) to suit the particular requirements of different spread spectrum systems. In an exemplary embodiment, the receiver includes multiple fingers. Each finger includes a plurality of generic despreaders/descramblers, a plurality of generic dechannelizers coupled to the despreaders/descramblers, and at least one timing estimation controller coupled to the despreaders/descramblers. The finger also includes at least one phase estimation controller, at least one frequency estimation controller, and at least one energy estimation controller all coupled to the generic dechannelizers.

Abstract: A tradesworker's radio has a weather and impact resistant features to enable a tradesworker to use the radio under adverse working conditions, such as construction or other work sites. Louvered grills covering moisture resistant loudspeakers are angled downward to protect the speakers from direct splash in case the radio is left outdoors in a heavy downpour. A layer of felt-like material is interspersed between the louvered grills and the loudspeaker cones to offer improved moisture resistance. A non-telescoping antenna of the rubber covered spring type material folds neatly into recess when not in use. The controls include waterproof pushbuttons for on/off, volume adjustment, a weather channel, AM/FM selection and tuning. Elastomeric blocks are bonded to the interior of the housing and the blocks have bonded threaded studs, which are used to shock mount the radio circuit board to the inside of the housing. This circuit board is treated with a conformal coating to improve its moisture resistance.

Abstract: A radio communication apparatus includes a transceiver coupled to an antenna structure with many directional antennas that form a radiation pattern. The antenna structure gives greater importance to certain directions of transmission. A power regulation device is controlled by a control element for modifying the radiation pattern. The control element includes switches for selectively activating/deactivating the directional antennas to modify the radiation pattern. A proximity detection device measures at least one proximity parameter and feeds the control element with a proximity indication for controlling the power regulation device to reduce the radiation pattern in the direction of the radio communication apparatus user. The proximity detection device includes a humidity and/or a temperature detector.

Abstract: A telephone apparatus, especially for use in a vehicle. There is a mobile telephone and a receptacle device in whose receptacle space the mobile telephone can be removably held by a safety catch. The safety catch extends part way over at least one of the mobile telephone surfaces and is reliably held when hung up by and push-forward element. Mobile telephone can be brought from receptacle space out into a position where it can be grasped. The telephone instrument is reliably held in a “harsh” environment and can be dependably installed but still be picked up easily.

Abstract: A compact frequency multiplier can perform high-degree frequency multiplication and can be incorporated in a wireless device. The frequency multiplier includes an input terminal for inputting an input signal, a first resonant circuit resonating with the frequency &ohgr; of the input signal, a second resonant circuit and an idler circuit, which resonate with the frequency n·&ohgr; that is, n times the frequency of the input signal, a variable reactor such as a varactor diode, coupling-adjusting capacitors, a bias resistor, and an output terminal for outputting multiplied output signals. In one embodiment, the frequency multiplier is a current-excitation type. The first resonant circuit and the second resonant circuit, each of which is constituted of an LC series resonant circuit, are connected in series between the input terminal and the output terminal.

Abstract: The invention relates to a radio system and a method of timing an interfrequency handover in a WCDMA cellular radio system where data transmission between a terminal equipment and a base station employs several adjacent alternative frequency bands, and which comprises several different base stations the coverage areas of which overlap at least partly, the base stations utilizing frequency band groups that differ from one another and that are situated next to one another in the frequency range, in which system a terminal equipment communicates with a first base station on a first frequency band and measures the strength of a first signal it has received from the base station, and wherein the terminal equipment measures the strength of a second signal transmitted by a second base station on a second, adjacent frequency band.