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Assignee: Telefonaktiebolaget LM Ericsson


Location: publ
No. of patents: 1373

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NumberTitleIssue Date
6704711System and method for modifying speech signals
A system and method for speech signal enhancement upsamples a narrowband speech signal at a receiver to generate a wideband speech signal. The lower frequency range of the wideband speech signal is reproduced using the received narrowband speech signal. T...
03/09/2004
6704898Combined hybrid automatic retransmission request scheme
A transmitter operates using a scheme that allows receivers using either Type I Hybrid ARQ or receivers using Type II Hybrid ARQ to successfully receive and decode blocks from a common transmitter without the need for the transmitter to be informed of whi...
03/09/2004
6704293Broadcast as a triggering mechanism for route discovery in ad-hoc networks
A method and/or an apparatus which places a broadcast message which the source expects a reply message in a broadcast message for route discovery. The combined message is broadcast throughout the ad-hoc network. When the combined broadcast message is rece...
03/09/2004
6700975Subscriber line interface circuit
In a subscriber line interface circuit, a device applies to a line, associated with the line interface circuit, a substantially constant line current of a first predetermined value for line voltages up to a first voltage having an absolute value which, by...
03/02/2004
6700882Method and apparatus for increasing throughput and/or capacity in a TDMA system
In accordance with exemplary embodiments of the invention, throughput and capacity in a TDMA system are increased using several different channels all operating simultaneously on the same carrier frequency. In a first embodiment, a base station in a cell ...
03/02/2004
6700888Manipulating header fields for improved performance in packet communications
In packet communication paths that include header compression, header fields of packets to be communicated are altered. The alteration of the header fields does not disturb their functionality, and is transparent to the header compression scheme of the pa...
03/02/2004
6697643System and method for implementing a multi-beam antenna without duplex filters within a base station
The present invention is directed to cellular systems and methods for providing a multi-beam antenna configuration within a base station without utilizing duplex filters. The multi-beam antenna configuration of the present invention produces overlaid beam...
02/24/2004
6697625Method in a communication network
The present invention relates to a method for assigning temporary identities to terminals connected to a communication network forming a geographic network service area with a number of location areas (fixed or dynamically customised), wherein the network...
02/24/2004
6697569Automated conversion of a visual presentation into digital data format
A full multimedia production such as a seminar, conference, lecture, etc. can be captured in real time using multiple cameras. A live movie of a speaker together with the speaker's flipping still images or slide show can be viewed interactively within the...
02/24/2004
6697336Method to configure a communication link for a data transmission
The invention relates to a method and a device for the optimized negotiation of communication parameters for a transmission of data in communication links. A list is initialized in a communication initializing device and is sent one after another to all d...
02/24/2004
6697331Link layer acknowledgement and retransmission for cellular telecommunications
A mobile telecommunications system comprises a mobile user equipment unit and at least one node through which a packet switched data session is established between the user equipment unit and a data network. One of the node and the user equipment unit ser...
02/24/2004
6697020Portable communication apparatus having a display and an antenna with a plane radiating member
A portable communication apparatus has a display and a first antenna with a plane radiating member. The display and the plane radiating member are integrated in a multi-layer structure, which is built into the portable communication apparatus. The first a...
02/24/2004
6696890Differential signal transfer circuit
A differential signal transfer circuit to control the common mode level of a differential signal, comprising an input common mode level detection circuit, for detecting the common mode level of an incoming signal, two capacitors coupled between the first ...
02/24/2004
6698005Min-time / race margins in digital circuits
A preferred timing change is automatically selected from a set of candidate timing changes that can be made to address a short path violation in a circuit design. This involves determining an associated cost metric for each of the candidate timing changes...
02/24/2004
6697874Method for controlling the access, such as medis access protocol, of a plurality of terminal adapters
A customer premises network includes a plurality of terminal adapters, which are interconnected by a double daisy chained bus, preferably an optical fiber bus. One bus is used in each data transmission, i.e., one bus for downstream transmission of data an...
02/24/2004
6694354Host computer access to peripheral device drivers
A peripheral device is cooperable with a host computer to direct the host computer to device information stored at an external location accessible to the host computer via an external data path. The device information can then be automatically downloaded ...
02/17/2004
6694148Transmit power control for MCPA-equipped based stations
A transmit power control system and method is provided which utilizes an efficient allocation of average output power of a multi-carrier power amplifier (MCPA), the average output power being a weighted average of the actual power over multiple time slots...
02/17/2004
6694085Device for feeding optical fibres into a duct
A device for feeding optical fibers into a tubular element, duct, or the like. For ease of handling, the fiber feeding device includes a channel into which there can be inserted a bar which includes one or more longitudinally extending blow passages, wher...
02/17/2004
6694013Filter arrangement and method for telecommunication device
The present invention relates to a filter arrangement (8C) and a method for frequency filtering and impedance conversion. The invention makes it possible to perform frequency filtering and impedance conversion using fewer inductors than what is required u...
02/17/2004
6694006Method of and a system for delivering calls to plural service provider domains
A method of and a system for delivering a call to a called subscriber in a service provider domain of an Intelligent Network (IN) telecommunication system (1) comprising plural service provider domains (10; 20). Each such domain (10; 20) comprises interco...
02/17/2004
6693984Method and apparatus for compensating for intersymbol interference in a received signal
A method and arrangement are proposed for compensating for intersymbol interference (ISI) in a multi-carrier transmission system. Compensation is based on the generation of an estimate of the ISI transient tail generated between consecutively transmitted ...
02/17/2004
6693623Measuring applications for an electronic reading device
A method and system for monitoring moving parts relies upon a formatted surface of a moving part. The formatted surface includes an address pattern wherein a precise position relative to the address pattern can be determined from a portion of the address ...
02/17/2004
6693894Communications network and method for directly routing calls to mobile subscribers using an internet protocol network
A method and communications network is provided that directly routes a call from a calling party to a called mobile party using an IP network. More specifically, the method includes the step of determining at the IP network as to whether the called mobile...
02/17/2004
6694247Traffic management system including a layered management structure
The invention relates to a traffic management system (TMSYS) including a layered structure of management layers. The system comprises a physical layer (PL) on which the actual traffic takes place. A traffic signalling layer (TSL) controls the traffic on t...
02/17/2004
6690744Digital line driver circuit
A digital line driver circuit 1 for driving a transmission line and being arranged to receive a digital input signal Di and output a digital output signal in accordance with said digital input signal Di, said digital line driver circuit being operable in ...
02/10/2004
6690725Method and a system for generating summarized video
An algorithm for video summarization is described. The algorithm combines photometric and motion information. According to the algorithm, the correspondence between feature points is used to detect shot boundaries and to select key frames. Thus, the rate ...
02/10/2004
6690583Carrier for electronic components
A carrier intended for one or several electronic components and having spaces provided for the components on at least one surface is provided. The carrier has an at least partly conductive Low Temperature Cofire Ceramic (LTCC) material with good thermal c...
02/10/2004
6690311Adaptively calibrating analog-to-digital conversion with correction table indexing
Methods, systems, and arrangements enable true wide-band calibration of analog-to-digital conversion (ADC) using correction table indexing. The frequency of an analog input signal that corresponds to a digital output sample is accounted for, at least part...
02/10/2004
6690080Semiconductor structure for isolation of semiconductor devices
In an integrated circuit, particularly an integrated circuit for radio frequency applications, a semiconductor structure for isolation of semiconductor devices that includes a semiconductor substrate, at least one shallow trench extending vertically into ...
02/10/2004
6691273Error correction using packet combining during soft handover
A method of error correction during a soft handover process is disclosed wherein a radio network control node receives a plurality of versions of the same data block. Two or more of the received versions of the data block are combined to determine a subst...
02/10/2004
6690951Dynamic size allocation system and method
A system and method of dynamically allocating memory records to a plurality of blocks in a telecommunications switch. A data acquisition monitor is provided for monitoring one or more traffic pattern parameters associated with the call traffic through the...
02/10/2004
6690953Calibration method for an adaptive antenna system
A method and a system are disclosed for achieving calibration with a minimum of hardware implementations. The method and system apply to base stations that have a "full adaptive antenna" implementation. The calibration accounts for irregularities from the...
02/10/2004
6690939Increased radio communication capacity using transmit power balancing
A transmit power load balancing technique in accordance with the present invention is used to increase the overall communication capacity of a radio communications system without incurring substantial, additional control signaling. An overloaded connectio...
02/10/2004
6690936Air-interface efficiency in wireless communication systems
A greater variety of frequency combinations may be utilized in multiple situations, including, by way of example but not limitation, hard handovers, soft handovers, macrodiversity, etc. Soft handovers, for example, may be executed between two base station...
02/10/2004
6687252Dynamic IP address allocation system and method
In a General Packet Radio Service (GPRS) network, a system and method of dynamically allocating an Internet Protocol (IP) address to a mobile terminal (MT) operating in the network. A Gateway GPRS Service Node (GGSN) requests IP addresses over the Gi inte...
02/03/2004
6687370Method and an arrangement for securing an ADSL connection
To secure an ADSL connection between a first ADSL transceiver (4) in a central office and a second ADSL transceiver (5) on a subscriber's premises on a telephone line (1) between a SLIC (2) in the central office and a telephone (3), a request to the SLIC ...
02/03/2004
6687366Intelligent routing
The present invention relates to an arrangement, a network and methods for identifying the relevant SDP for a question from an SCP in a telecommunication network with a large amount of subscribers and handling and administration of a large amount of subsc...
02/03/2004
6687226Base station subsystem and method for handling an increase in traffic volume that overloads a terrestrial link in an internet protocol network
A base station subsystem (BSS) and method is provided that handles an increase in traffic volume which temporarily overloads at least one terrestrial link in an IP network by gracefully downgrading the transmission rate of one or more calls. More specific...
02/03/2004
6687655Maintenance of sliding window aggregated state using combination of soft state and explicit release principles
A method is provided for reserving, maintaining and releasing resources in the interior nodes located within an interior network positioned between edge nodes, wherein requests belonging to corresponding data microflows that continually arrive at any inte...
02/03/2004
6687507Time of arrival estimation for edge/GSM
In systems which transmit both GSM modulated and EDGE modulated signals, time of arrival estimations can be improved without requiring the detection of the type of modulation used on the received signal. In accordance with the present invention, a receive...
02/03/2004
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