Abstract: A release is carried out by PP transmitting CC-person who belongs to a radio system with a short range, for example a wireless telephony system, can be temporarily transferred as guest into a second wireless telephony system. When the user moves to a second communications system, he identifies himself in it as a guest. Information relating to the temporary address of the relevant person is transferred to his home system. An incoming call to the person in question is received by the home system which forwards the call to the system in which the person sought is temporarily registered. The caller is then notified that a call is coming in by a call signal being originated. The called party then answers the call and a normal call is set up. With an outgoing call, signals are transferred from the caller to the network which registers who is establishing the call.

Abstract: In telecommunication systems, for instance of the type DECT, there are mobile units which move within and between the cells of the system. The new device identifies mobile units which move with a predetermined speed and the identification is performed by means of fading measurements.

Abstract: The present invention relates to a radio-based mobile short-range communication system SRC, comprising a transmitting and receiving unit. The receiving units are offered information from the transmitting units from a number of information providers. The information providers offer information within one or more predetermined subject fields. The receiving unit selects a desired information and obtains this information presented via a presentation element. The transmitting unit transfers a protocol divided into a number of main divisions. For each information provider, the protocol is divided into a number of subdivisions, one of which indicates different subject fields. The subject fields constitute headings for different subject categories which are presented in a number of octets. Each subject field is represented by one bit which is set to 0 when the information provider does not have any information to deliver within the subject field and, respectively, to 1 for information which is provided.

Abstract: For repeaters in a radio-based communication system, there is a function for identification and initiation of the respective repeater concerned. The said function can be effected without the need for digital decoding in the respective repeater concerned.

Abstract: In a mobile radio system, which comprises densely positioned base stations working with a short range between the affected base stations and mobile units, repeating functions are carried out by means of a simplified variant of a base station. This simplified variant of a base station is positioned between the ordinary base station and the mobile unit, which simplified variant of a base station receives a respective message and forwards the message to the affected mobile unit.

Abstract: A radio based communication system including stationary units, portable or mobile units, and repeaters. Respective mobile units communicate using a normal access schedule where transmitting and receiving functions are separated in time, for instance with a half time frame. Reception for a respective current stationary unit is delayed a number of time slots in relation to transmitting from the stationary unit, at which the stationary unit is aware of the delay and consequently the use of a repeater. Also repeating of information is arranged to be performed within one time frame.

Abstract: A random access protocol system and method for communicating between a mobile station and a base station in a multi-access digital radio communication system, including the steps of cyclically repeating a random access sequence and transmitting each cyclically repeated random access sequence in an orthogonal frequency division multiplex format from the mobile station as an uplink transmission.

Abstract: A device and a procedure for a telecommunications system that makes possible the introduction of a general personal telephone number which functions in both fixed and mobile networks as well as in cordless access systems connected to these networks. A condition for this personal number is a central network node located at, or in connection to, these telecommunications networks (7), preferably PSTN, ISDN, GSM, NMT, without influencing network functions, numbering schemes, terminals in these networks. For a call to a subscriber located in any telecommunications network, the call, independent of from which telecommunications network the call emanates, is connected to this central network node which converts the received personal number to the specific number corresponding to the telecommunications network at which the subscriber has registered himself/herself, whereafter said network node executes connection of the call to the current access point which corresponds to the specific number.

Abstract: An arrangement for supplying local network emulation services over a broad connectionless ATM-network. The ATM-network is in charge of connectionless data communication traffic by a broadband data service network. Private local networks can be connected to the ATM-network to exchange traffic with other local networks. The ATM-network emulates local networks so that the ATM-network can deal with the local network traffic. The broadband data service network includes servers which function as address resolvers for local network addresses and as local network relays for routing local network traffic via the ATM-network. The server uses unit specific addresses and local emulation groups as addresses.

Abstract: A method and arrangement for transfer between a cordless telecommunication system, preferably DECT, and a cellular mobile telecommunication system, preferably GSM. The cordless telecommunication system includes of a number of cells within a relatively small area, while the mobile telecommunication system includes of a number of cells within a relatively larger area which completely or partly overlaps the area of the cordless system. The system comprises at least one portable terminal capable of communicating with both the cordless and cellular communication systems. Accordingly a transfer zone is fixed by the cordless system and the terminal is monitored with regard to it identity and position so that transfer parameters can be transmitted to the terminal when it is located in the transfer zone. The transfer is prepared by setting up a three-party connection between the terminal and the telecommunication system and between the terminal and the mobile telecommunication system.

Abstract: Telecommunications system including a fixed tele- and datacommunications system, hereinafter called a fixed system, and a radio communications system, for instance a GSM-system, hereinafter called a mobile system, the mobile system including mobile units. A respective mobile unit of a number of mobile units is arranged for connection to an optional subscriber line or extension line in the fixed system via a connection device (for instance a jack), and the fixed and/or the mobile system is/are arranged with identification devices which identify via said connection device, to the fixed system, a connected mobile unit for enabling billing for the use of the mobile unit in the fixed system.

Abstract: A device and method in which polyphones of speech of a first language is received and stored as well as a movement pattern in a person's face and/or body is registered. The registration of the movement pattern is made by measuring movement at a number of measuring points in the face/body of the speaker, where the measurements are made at the same time that the polyphones are registered. In connection with translation of a person's speech from one language into another, the polyphones and corresponding movement patterns in the face are linked up to a movement model in the face. A picture image of a face of the real person is after that pasted over the model, at which one to the language corresponding movement pattern is obtained. The invention consequently gives the impression that the person really speaks the language in question.

Abstract: A telecommunications system operates with a personal telephony function and a respective user has the capability of controlling offered personal telecommunications services. In the system, the user is represented by a unique identity (UPTN), which is used for identification and authenticity check of the user. Access to the telecommunications services can be established from a DECT portable which is involved in identification, authenticity check and registration in the telephone system. Availability of the services offered thus becomes more user friendly and the services and the DECT system become more attractive to the end users.

Abstract: A method of demultiplexing OFDM signals and a receiver for such signals. More particularly the method is concerned with synchronization in an OFDM receiver. A signal is read into a synchronization unit, in the time domain, i.e., before fourier transforming the signal by means of an FFT processor. In the synchronization unit, a frame clock is derived for triggering the start of the FFT process and for controlling the rate at which data is supplied to the FFT processor. For OFDM reception, it is vital that the FFT process commences at the right point in time. Once the frame clock has been recovered, a frequency error can be estimated by the synchronization unit. The frequency error is used to control; an oscillator which generates a complex rotating vector which is, in turn, multiplied with the signal to compensate for frequency errors. The method can be used both with OFDM systems in which symbols are separated by guard spaces, and with OFDM systems in which symbols are pulse shaped.

Abstract: A method and device for inputting characters. An answering equipment, Ts, answers a call from a terminal equipment, Te. The answering equipment transmits a sequence of characters which can consist of letters, digits or other characters. The information is transmitted via the telecommunications network to the terminal equipment where the information is read out in a loudspeaker which is listened to by a subscriber. When the subscriber hears the character in question being read, he/she presses a key on the terminal equipment. The key can be one of the keys on the ordinary keypad of twelve keys on the telephone. The signal passes to the answering equipment where it is identified and registers that the character in question shall be stored in a data base, DB. The data base stores the character and combines the other characters which are input, and predicts which possible words or character combinations remain, depending on application.

Abstract: A method and device for determining quality of speech. The speech to be evaluated is listened to by a person who reproduces the speech. The end of vowel sounds in the produced and reproduced speech respectively are determined. The difference between the ends of the vowel sounds is registered. From the obtained time differences an average value is determined. The average value indicates the quality of the produced speech. The invention can be used for evaluation of different speech sources.

Abstract: A method and device for speech-to-text conversion. From a given speech, the fundamental tone is extracted. A model of the speech is further created from the speech. In the model, a duration reproduction in words and sentences is obtained. The duration reproduction is compared with a segment duration in the speech. Information which decides which type of accent exists is obtained from the comparison from which a text with sentence accent information is produced. Further, in creating the model lexical information, which may indicate accents in words, can be utilized. Syntax analysis of the model can further by utilized to model a fundamental tone in a sentence. Such operations allow the re-recognition utilizing the accent and stress after a decision as to the type of accent which exists.

Abstract: A multi-user system includes radio channels which are independent and uncorrelated for different users. The system operates with frequencies which, due to multi-path propagation, are more or less attenuated for one user and more or less amplified for another user. Elements are arranged to detect or measure the attenuation/amplification for the different frequencies. The elements also prevent signal or information transmission at frequencies which drop below a predetermined lowest attenuation by disconnecting the frequency or frequencies in question and connecting a corresponding number of frequencies which pass the attenuation value criterion.

Abstract: The present invention concerns a device for communication networks comprising a connection member and network database. A first subscriber, equipped with a multimedia terminal, makes a connection to a second subscriber, equipped with a number of services connected to various terminals. The first subscriber wants to use several facilities in parallel during the communication. This is recorded in the network database which ensures that the relevant services at the second subscriber are used for the connection . Thereafter the subscribers can communicate with each other over several parallel facilities. In addition, the first subscriber has the ability to request, during the communication, the connection of further facilities which were not connected at the beginning of the communication.

Abstract: A mobile radio system includes a number of base stations operating with time frames and mobile units operating with low transmitting power. The range between an affected mobile unit and an affected normal base station is extended by means of a repeating function. The repeating function can be effected from a functionally subordinated base station which operates with a short range. The functionally subordinated base station is placed between the normal base station and the mobile units. Each subordinated base station is arranged to detect affected mobile units which call the normal base station and to forward the calls and the information which the affected mobile units transmit to the normal base station.