Abstract: A radio handset and method of operation of same for communication on a selected channel of a radio telephone system in which information is transmitted in bursts, each burst having respective portions independently capable of indicating burst errors. The handset is operable to detect sliding collisions by comparing the distribution of errors over error indicating portions of a received burst.

Abstract: A fixed wireless terminal such as a wireless local loop terminal comprising: memory (210) storing characteristics for at least one network, means (214, 220) for accepting network information particular to a subscriber and processing means (208) for reading the subscriber network information and, on the basis of the subscriber network information, selecting appropriate network characteristics for subsequent use by the terminal. Preferably the processing means (208) is arranged to configure a subscriber line interface circuit (212) in accordance with the selected appropriate network characteristics, such as ringing tone, dialling tone, busy tone etc.

Abstract: A cellular radio network based positioning system for determining the position of a mobile station (16). For each base transceiver station (1 to 5) or cell of the network, a fixed list of base transceiver stations is stored by a Mobile Positioning Centre (13). Each list identifies those base transceiver stations which enable the position of a mobile station served by the corresponding base transceiver station (6) to be optimally determined. The list is transmitted to the mobile station (16) via the serving base transceiver station (6) together with a list of respective real time differences which exist between the serving base transceiver stations and the listed base transceiver stations. The mobile station determines an observed time difference for each of the listed base transceiver stations, relative to the serving base transceiver station (6), from signals broadcast by the listed base transceiver stations.

Abstract: A portable radio communication device having low power radio frequency unit, and having associated therewith a plurality of memory packs, the memory packs being situated remote from and external of the portable radio communication device, and the memory packs having a low power radio frequency unit associated respectively therewith, the portable radio communication device including data transfer means whereby the portable radio communication device is operable to read from and write to selectable ones of the memory packs, the data transfer means providing for the read/write data operations by low power radio frequency transfer between the low power radio frequency unit of the memory packs and the low power radio frequency unit of the portable radio communication device. One advantage of this invention is that bulky memory is not situated in the mobile phone handset itself, which is thus more compact.

Abstract: The invention relates to a method for setting up a data transmission connection which is formed for transmitting information between at least a first communication device (1, 6-15, 300a, 300b, 400, 401) and a second communication device (1, 6-15, 300a, 300b, 400, 401), in which method, for at least the first communication device (1, 6-15, 300a, 300b, 400, 401), a network address (321a, 321b) is selected that is advantageously used for identifying the first communication device (1, 6-15, 300a, 300b, 400, 401).

Abstract: The invention relates to a method for transmitting background noise information including a silence descriptor identifier and background noise parameters in a communication system in which the information to be transmitted is formed into data frames. The data frames are subjected to channel coding to form channel-coded frames. The channel-coded frames are interleaved to be transmitted in two or more data transmission frames, and information of two channel-coded frames is transmitted in each data transmission frame. A first silence descriptor frame is formed provided with the silence descriptor identifier. The first silence descriptor frame is subjected to channel coding to form a channel-coded silence descriptor frame. The channel-coded silence descriptor frame is transmitted in two or more data transmission frames, and at least one data transmission frame transmitting part of the channel-coded silence descriptor frame is also used to transmit at least the background noise parameters.

Abstract: A method and an arrangement for setting data transfer parameters in a data transfer system is disclosed for use preferably in a digital cellular system. A data transfer connection may be established by setting first the parameters related to speech connection and then, during the speech connection, the data transfer parameters can be changed, when necessary to be suitable for data transfer. Then, at call setup, no data is needed on whether the data transfer connection is possibly to be used for data transfer.

Abstract: A housing or decorative cover for a mobile communication device is constructed by impact extrusion of metal. The impact extrusion die and punch are designed to provide attachment ridges and slots for ease of assembling the cover to the device. To provide a final shape and finish the impact extruded metal cover is drawn through a drawing stone.

Abstract: Apparatus, and an associated method, for encoding and decoding data in a communication system. A hybrid dimensional Spherical Space-Time Code (SSTC) scheme is provided. Data to be transmitted upon a communication channel is encoded, and when received at a receiving station, the encoded sequence is decoded.

Abstract: A chip assembly comprising a chip mounted on a support is disclosed. The chip assembly comprises at least one terminal and discharge means for discharging a charge accumulated on or transferred to the at least one terminal. The discharge means is connected to an RF common mode node for at least one circuit on the chip.

Abstract: A radio handset comprises a housing having a key pad including a plurality of keys mounted on a main body and an extending portion mounted for movement between a first position in which a group of the plurality of keys are concealed and a second position in which the group of the plurality of keys are exposed. A processor answers a call in response to movement of the extending portion. The processor delays answering the call for a period during which generation of a predefined cancellation signal cancels answering the call.

Abstract: A transmitter, for controlling at least one receiver by intermittently transmitting groups of messages. The transmitter includes a controller arranged to provide intermittently groups of messages for transmission. Each of said groups includes a plurality of messages in series and separated by time intervals, wherein each of the plurality of messages in a group includes control information such that control of the receiver can be effected by reception of any one of the plurality of messages in the group. The invention increases the efficiency with which control messages can be transmitted without markedly increasing the power consumption of transceivers in a radio frequency network.

Abstract: A damped hinge comprising a first part mounted to a second part to allow relative rotation between the first and second part; biasing means for providing rotational movement between the first and second part; wherein upon rotational movement between the first and second part the first and second parts are arranged to cooperate to dampen the rotational movement.

Abstract: An embedded system (1) comprising at least one processor (2) for running an operating system (OS_A, OS_B). The embedded system (1) further comprises: means (17, 401, 412) for running at least two operating systems (OS_A, OS_B) in said processor (2), a first operating system (OS_A) comprising a first group of threads (THA1, THA2, THA_IDLE), a second operating system (OS_B) comprising a second group of threads (THB1, THB2, THB_IDLE), means (nFIQ, nIRQ, SWI) for generating an interrupt (FIQ, IRQ, SWI) to said processor (2), means for examining (401, 603, 617) to the execution of which thread (THA1, THA2, THB1, THB2, THA_IDLE, THB_IDLE) the interrupt (FIQ, IRQ, SWI), that has come to the processor (2), affects, and means (401, 412, 603, 609, 617) for transmitting interrupt data to said operating system (OS_A, OS_B) which relates to the thread (THA1, THA2, THB1, THB2, THA_IDLE, THB_IDLE) affecting the interrupt (FIQ, IRQ, SWI) received by the processor (2).

Abstract: In order to record and play spoken messages in a voice mail system, there are implemented steps where there is recorded (305) a first greeting message and a second greeting message corresponding to at least two operating modes of the terminal of a given subscriber, in the voice mail system, there is received (308) information as to in which operating mode the terminal of a given subscriber is set, and as a response to a call that is transferred to the voice mail system, there is played (302) a greeting message which is selected on the basis of the earlier received information as to in which operating mode the terminal of a given subscriber is set.

Abstract: A joystick controller for a portable radio communication device in which a ring of elasto-resistive material which when relaxed acts as an insulator, and when stressed acts as a conductor is positioned below the joystick lever of the controller and above four pairs of contact pads arranged in a circle, and the elasto-resistive material is used to transduce the movement of the joystick lever so as to provide an electrical signal output indicative of the amount of movement of the joystick lever.

Abstract: A method and apparatus for receiving a radio frequency signal and a method and apparatus for transmitting a modulation signal in a multiple channel radio system. The method for receiving the radio frequency signal involves mixing the radio frequency signal with a demodulating signal, tunable in frequency steps greater than the channel spacing of the multiple channel radio system to facilitate rapid frequency adjustments. The resultant intermediate signal is then mixed with another demodulating signal, tunable in relatively smaller frequency steps in order to select the channel containing the radio frequency signal.

Abstract: A Network Assisted Mobile Terminal GPS system includes a plurality of GPS-capable mobile terminals (10) each having a transceiver, and a wireless telecommunications network (32) having at least one base site transceiver (30) for transmitting GPS Assistance Data to individual ones of the plurality of GPS-capable mobile stations using a point-to-point signalling protocol. In the illustrative embodiment described herein the point-to-point signalling protocol is comprised of at least one of an IMSI (International Mobile Subscriber Identity) Attach, a Normal Location Update, or a Periodic Location Update signalling protocol.

Abstract: An improved paging procedure for use in a low power radio communications network. A transceiver which pages a device by periodically transmitting a series of messages, comprises a transmitter which transmits a series of messages comprising a message at each frequency in a predetermined series of frequencies, a receiver which receives at, at least a predetermined frequency; and a controller which enables the transmitter and then the receiver in each of a plurality of successive periods and provides each message in said series of messages. The predetermined series of frequencies is an ordered series. A first message in the series of messages transmitted in a period defines directly or indirectly when the receiver is enabled and a second message in the series, a mark code, directly defines the predetermined frequency.

Abstract: A handset having a keypad structure for inputting information is described. The keypad structure includes a keypad assembly having a plurality of keys being interconnected by a foil, the plurality of keys being provided with activation pins, a keypad base part having a switching device that is activated by an associated activation pin when a respective key is depressed, and a support device arranged in between the keypad assembly and the keypad base part supporting the foil of the keypad in between the keys.