Patents Assigned to Telefonaktiebolaget L M Ericcson
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Publication number: 20120315003Abstract: An assembly for guiding and protecting optical fibre cables or wave guides, which comprises a first number of first guide tubes and a second number of second guide tubes where each of the first and second guide tubes are adapted to receive an optical fibre cable along its complete length. The assembly further comprises an elongated first tubular shell, and an elongated second tubular shell where the first number of first guide tubes is supported within and in parallel relationship with the first tubular shell, and the second number of second guide tubes is supported within and in parallel relationship with the second tubular shell. The assembly further comprises a first connecting strip which interconnects the first and second tubular shells, which defines a separation between the first and second tubular shells, and which positions the first number of first guide tubes and the second number of second guide tubes in parallel.Type: ApplicationFiled: September 16, 2011Publication date: December 13, 2012Applicant: Telefonaktiebolaget L m Ericcson (publ)Inventor: Uffe G. Mogensen
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Publication number: 20120281683Abstract: In downlink signal communication to a mobile terminal (200), the mobile terminal (200) is associated with a serving access node (100-1). Signal communication to a further mobile terminal (200; 200??) may interfere with the signal communication between the serving access node (100-1) and the mobile terminal (200). In order to allow interference mitigation at the mobile terminal (200), the serving access node (100-1) obtains scheduling information pertaining to the signal communication to the further mobile terminal (200; 200??). The obtained scheduling information is then forwarded to the mobile terminal (200) to be used for interference mitigation.Type: ApplicationFiled: November 30, 2009Publication date: November 8, 2012Applicant: Telefonaktiebolaget L M Ericcson (publ)Inventors: Laetitia Falconetti, Christian Hoymann
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Patent number: 8059772Abstract: A filter device and method for suppressing effects of Adjacent-Channel Interference of a received signal in a Frequency-Division-Multiple-Access system by filtering a baseband signal of the received signal. The filter device comprises an interference filter, which is a complex digital Single-Input-Multiple-Output, SIMO, filter that is adapted to simultaneously generate a first signal filtered at an upper-frequency-band and a second signal filtered at a lower-frequency-band, wherein the first signal is separate from the second signal. The filter device also comprises a selector adapted to select one of the signals as the output from the filter device.Type: GrantFiled: November 9, 2006Date of Patent: November 15, 2011Assignee: Telefonaktiebolaget L M Ericcson (publ)Inventor: Shousheng He
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Publication number: 20110254594Abstract: The present invention relates to a solution for electrical power conversion using a first gate (202, 302) for starting an electrical wave in a wave propagating medium (205, 306) acting as a transmission delay where an electrical wave propagates and due to reflections in the propagating medium a resulting wave builds up and is transferred to an output for delivering a power amplifier, DC/DC converter or similar function and the output is controlled using a second gate (204, 304).Type: ApplicationFiled: December 22, 2008Publication date: October 20, 2011Applicant: Telefonaktiebolaget L M Ericcson(PUBL)Inventor: Sverker Sander
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Patent number: 7937085Abstract: A Dual mode mobile terminal (MT2) comprising a WLAN interface (WLAN_NIC) and a cellular radio interface (GSM_NIC) has been described wherein when receiving a Page Request (6) message over the cellular radio interface (GSM_NIC), indicating an incoming voice call over the cellular radio interface, or upon receiving an indication from the user of the dual mode terminal to perform an outgoing voice call, performing a determination (7) as to whether a WLAN coverage is possible from an AP providing WLAN telephony calls, and if so responding, by issuing a WLAN call message (8) to a WLAN AP over the WLAN interface to an interworking node (IWFN).Type: GrantFiled: September 17, 2004Date of Patent: May 3, 2011Assignee: Telefonaktiebolaget L M Ericcson (PUBL)Inventors: Gunnar Rydnell, Hans Rönneke, Stefan Rommer, Jan Lindskog
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Patent number: 7817544Abstract: Methods and apparatus for distributing events among a set of traffic processor in a telecommunication network. The methods and apparatus determines a traffic processor from the set of traffic processors with the lowest traffic load, the traffic load is determined for each traffic processor of the set of traffic processors based on a weighting factor, an event queue length of a traffic processors and a current traffic load. Events are re-distributed when a change occurs in the set of traffic processors. The re-distribution is based on a determination of an allowable event queue length for each traffic processor of the set of traffic processors, which is based on the current traffic load, an optimal traffic load and a maximum event queue length.Type: GrantFiled: December 24, 2007Date of Patent: October 19, 2010Assignee: Telefonaktiebolaget L M Ericcson (Publ)Inventors: Zhongwen Zhu, Huiping Zhang
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Patent number: 7539210Abstract: A method is provided for routing data packets across a multi-layer network which includes a plurality of nodes, a logical level provided with a plurality of logical links and a physical level provided with a plurality of physical links, each of the logical links corresponding to at least one of the physical links, the method comprising the steps of assigning a weight to each logical link with respect to a first critical constraint in the logical level, refining the weight assigned to each logical link with respect to a second critical constraint in the physical level and, based on the weights assigned to each link, computing a path at the logical level connecting a start node to an end node for the transport of the data packets.Type: GrantFiled: May 17, 2002Date of Patent: May 26, 2009Assignee: Telefonaktiebolaget L M Ericcson (Publ)Inventors: Paola Iovanna, Roberto Sabella, Pietro Tou, Gianpaolo Oriolo
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Patent number: 6946983Abstract: The values X(n) input to a current-steering digital-to-analog converter (49) are modified (41) before the actual conversion to compensate for conversion errors of the digital-to-analog converter. The input values are modified according to a model (43) of the digital-to-analog converter in which each output value of the digital-to-analog converter Y(n) is a sum of a desired value directly proportional to the respective input value and an error. The error is a product of the settled output value, i.e. the difference between the desired value and the previous output value Y(n?1) actually provided by the digital-to-analog converter, and a relative step error that is a function only of the respective input signal and is stored in a table. The relative step error can be a function also of the previous output signal and of the previous input signal. This model has a low complexity and is suitable for on-chip implementation.Type: GrantFiled: October 25, 2004Date of Patent: September 20, 2005Assignee: Telefonaktiebolaget L M EriccsonInventors: Ola Andersson, Jacob Wikner
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Patent number: 6631128Abstract: Routing nodes that are interconnected within a communications network are not configured to utilize a single type of switching technology in the context of a single type of networking topology. Responsive to data input and the operation of an expert system, the routing nodes are configured to implement a certain switching technology type and networking technology type, and thus optimize portions of the communications network to handle different types of traffic. Traffic of the various different types may then be efficiently handled through the network by its correspondingly optimized portion.Type: GrantFiled: May 27, 1999Date of Patent: October 7, 2003Assignee: Telefonaktiebolaget L M Ericcson (publ)Inventor: Yves Lemieux
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Publication number: 20020151284Abstract: A power controller for a mobile terminal variable gain amplifier (VGA). A controller consistent with the invention controls VGA output using a feedback error signal established based on the difference between a signal representative of the VGA output and a signal representative of a target output. The error signal causes convergence of the VGA output to the target output based on a magnitude of the difference. A method of controlling the output of a variable gain amplifier in a mobile terminal is also provided.Type: ApplicationFiled: February 16, 2001Publication date: October 17, 2002Applicant: Telefonaktiebolaget L.M. EriccsonInventors: Thomas E. Medl, Ronald D. Boesch
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Patent number: 5794140Abstract: The load on the communications resources of a cellular telephone system is monitored to detect instances of excess amounts of unused resource capacity. When such instances are detected, a message is transmitted to subscribers via the cellular system offering reduced charging rates for calls initiated in response to the offering message. The subscriber mobile stations are programmed to alert the subscriber to the broadcast of the offering message, after which the subscriber may initiate a reduced rate call. The mobile stations may further be programmed to automatically initiate the cellular call in response to receipt of the offering message, and to thereafter engage in the communication. Monitoring of communications resources external to the cellular system is also made, and an offering message is broadcast by the system in response to detection of excess amounts of unused external resource capacity, in response to which subscribers may initiate calls requesting reduced rate access to the resource.Type: GrantFiled: October 24, 1995Date of Patent: August 11, 1998Assignee: Telefonaktiebolaget L M Ericcson (publ)Inventor: Francois Sawyer
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Patent number: 5517549Abstract: A system for collecting within a mobile subscriber station of a cellular radio system the key elements of telephone billing information for subsequent retrieval. Information about the connected party's number, the time of the call and the duration of the call are collected in real time and stored in a non-volatile memory. Such information is selectively retrieved from the memory of the subscriber station on command and a bill for use of the subscriber station calculated on the spot (by a mobile station rental agency, for example).Type: GrantFiled: December 3, 1993Date of Patent: May 14, 1996Assignee: Telefonaktiebolaget L M EriccsonInventor: Jangsik Lee
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Patent number: 5434798Abstract: A method and apparatus for performing reconfiguration of a cellular network is provided. Cell parameters of affected mobile switching centers in the network are copied to a database, and the copied parameters are stored. A set of proposed changes to the stored parameters are prepared and the consistency of the prepared set of proposed changes is verified. Any necessary alterations to the set of proposed changes responsive to the verification are made and the verified set of proposed changes are copied to the affected mobile switching centers. The verified set of proposed changes are then introduced into the network. Additionally, at all times, an up-to-date image of all the cell parameters in all the mobile switching centers in the network is maintained in a system parameter database.Type: GrantFiled: May 23, 1991Date of Patent: July 18, 1995Assignee: Telefonaktiebolaget L M EriccsonInventors: Monica B. K. Madebrink, Walter Ghisler, Ake L. Ramstedt, Anders C. E. Hoff, Sven G. Nordstrom, Gunilla A. Bergling, Nils P. Taylor, Bo G. Svensson, Lars R. Waerme, Hans J. Roxbergh, Jan E. A. S. Dahlin, Harald Kallin