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A polar loop transmitter includes separate phase and envelope paths providing a linearising scheme for an efficient non-linear power amplifier. Loop filters are...
Testing of a radio transceiver
The objective of this invention is to provide a test procedure that enables testing of not only the transceiver but also of the cable connecting the transmitters...
A method for defining correction parameters used in transmitter linearization executed by a predistortion method and a transmitter comprising: sampling means (9)...
Initiating a wireless connection to a broadcast program
A method and system for users to select and participate in call-in broadcast programs are disclosed. A user speaks a station name into a mobile device, providing...
Mobile telephone for internet-applications
A mobile telephone for Internet applications comprising at least one WEB server which can be coupled to at least one further server and to at least one client.
Portable telecommunication device
A portable electronic device comprising a user input device capable of adopting at least three pre-determined positions, each of which enables an associated...
An antenna is disclosed. The antenna has a first element including an unbalanced antenna with a feed point, and a second element. The second element has a spaced...
Techniques for sample rate conversion
Techniques for sample rate conversion are disclosed. In one exemplary embodiment, a sample rate conversion occurs between first samples having a sample rate...
Radio transceiver having a phase-locked loop circuit
The invention relates to a phase-locked loop circuit (1) in a radio transceiver for the detection of the linear operation of a first voltage controlled...
A key has a varying response depending on the manner of depression. The key comprises at least a base and a switching element arranged curved relative to one...
Method, system and apparatus for constructing fully personalized and
contextualized interaction environment for...
A method, system and apparatus for creating personalized and contextualized interaction environment for terminals in mobile use. The method comprises receiving...
Method and apparatus for initiating compression of headers of packets and
refreshing the context related to the...
A method and apparatus for initiating compression of IP headers of a stream of packets to be sent from a source apparatus to a destination apparatus. IP header...
System and device for monitoring of occupancy area
The invention concerns a system for monitoring an occupancy area (15.1 15.3). The system includes the following elements. A device (10) that is arranged in...
Method and apparatus for implementing a class D driver and speaker system
An audio path is constructed to include a multi-bit sigma-delta converter for converting an N-bit digital input to an n-bit output representing an over-sampled,...
An antenna arrangement for dual mode radio devices such as WCDMA/GSM or Bluetooth radio devices. The arrangement contains two antennas close to each other, where...
A method of establishing a connection in a telecommunications system in which an intermediate network provides for communications between a user terminal and one...
Personal safety net
A personal safety net includes a mobile terminal, a server including a memory to store data, and a communications network to transmit data between the mobile...
Cell re-selection utilizing system information length
The invention relates to a method for performing cell re-selection in a cellular network, and a subscriber terminal and a network part using the method. In the...
Vehicle telephone system
A telephone system for a vehicle comprising: a vehicle transceiver, on board said vehicle, and connectable to a cellular telephone network for bi-directional...
Hybrid switched mode/linear power amplifier power supply for use in polar
In one aspect this invention provides a DC-DC converter that has a switch mode part for coupling between a DC source and a load, the switch mode part providing x...
Data transmission method and radio system
The invention relates to a radio system and a data mission method. In the method of the invention, a transmitter codes a signal to be transmitted such that at...
Charging in a communication system
A method for charging for services in a communication system comprising a charging entity and at least two connection support entities for providing resources to...
Method for selecting modulation detection in receiver, and receiver
A method for selecting a modulation detector in a receiver and a receiver which includes a first and a second modulation detector, mechanisms for determining at...
Method and arrangement for using a selected signal processing scheme to
A method is presented for conveying information over a wireless interface in the form of a digitally encoded message. A set of bits is provided as a first piece...
Mapping of internet protocol based data
A method of mapping internet protocol (IP) based data and signalling data for a forming a single connection between a mobile handsets in a code division multiple...
System and method for using a mobile router tunneling protocol to locate
functionality in a distributed...
The system and method provides virtual mobility to an application by using a mobile router tunneling protocol (MRTP). The system and method use a MRTP to enable...
A packet mode (e.g. IP) communication service layer is provided on top of a standard mainstream cellular radio network. Conceptually, the communication layer...
Phase shifted time slice transmission to improve handover
The present invention provides methods and apparatus for a wireless system broadcasting a plurality of data packets to at least one wireless terminal. The...
Method for controlling the transmission power
The invention relates to a method (300, 400, 500) for controlling transmission power of a signal which is received using a certain number of rake fingers, where...
Memory structure, a system, and an electronic device, as well as a method
in connection with a memory circuit
A memory circuit (1) comprises at least a non-volatile random access memory (3) and a random access memory (4). The memory circuit (1) also comprises a memory...
Advertising using an eBook with a bistable display
A user terminal, such as an eBook, with a bistable display wherein the terminal detects when a predetermined period of user inactivity with respect to loaded...
The present invention relates to a lineariser for use with an amplifier. The lineariser comprises an input means and an output means. Input matching means are...
Cover structure for a keypad
A top structure for a keypad, comprising a number of key caps. The structure comprises a solid flexible layer, which is placed above the key caps or directly on...
Front cover of a handset
Programmable CPU/interface buffer structure using dual port RAM
Disclosed is a programmable buffer circuit (16) for interfacing a CPU (12) to a plurality of channel interfaces (14). The buffer circuit includes a dual port...
Defining context identifier in header field compression
A method for defining a context identifier when compressing header fields of data packets, in which method, a context is defined for a compressor and...
Technique for providing announcements in mobile-originated calls
A technique for providing an announcement in a communications network includes setting up a first level communication session in a first network element of the...
Antenna arrangement in a mobile station
The invention concerns generally the technological field of antenna arrangements in mobile stations. The invention also concerns a mobile station equipped with...
Transmitting information based on location data onto display of mobile
A method of transmitting information based on location data from a cellular mobile network to the display of a mobile station, the display comprising a field for...
Pulse shaping according to modulation scheme
A method is provided for defining a pulse function shape for acting on a data stream for transmission in a telecommunication system in accordance with a...
Backwards compatible, extended method to execute check number calculation
A method is taught to provide an improved mobile station International Mobile Equipment Identity (IMEI) code having at least a six digit hexadecimal SNR...
Two channel communication system based on RDS datastream broadcasting and
the integration of digital mobile...
The present invention comprises a digital mobile terminal system for accessing mobile internet services including a VHF/AM/FM radio receiver and a subsystem that...
Transmission method in a communication system
The invention relates to a transmission method in a communication system. In order to devise a mechanism for providing seamless connections in an efficient way,...
System for rate control of multicast data delivery in a wireless network
The present invention provides methods and apparatus for transmitting multicast data over a wireless channel. At least one wireless terminal requests a multicast...
Grapevine driven updating technique
A grapevine driven updating technique includes providing a first piece of updated data to a first mobile terminal and then initiating an inquiry from the first...
Method of determining the validity of service announcements
Disclosed is a method of determining the validity of service announcements in a cellular mobile network, wherein a multimedia broadcast/multicast service (MBMS)...
Power control for a transmitter
The invention relates to a transmitter which comprises a modulator providing a phase-modulated constant-envelope radio-frequency signal, and to a method of...
Vertical and horizontal pictures taken without camera rotation
This invention describes a method for changing a picture orientation of a picture taken by an image sensor of an electronic device, e.g., for taking horizontal...