Patents by Inventor Stefan Eriksson
Stefan Eriksson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140211719Abstract: Method, arrangement and computer program product in a base station for modulating information intended for transmission to a terminal. The base station and the terminal are comprised within a wireless communication network. The information comprises first and second data blocks, where two USF values are to be sent across the first data block and the second data block. The first data block and first parts of the two USF values are modulated with a first modulation technique and the second data block and second parts of the two USF values are modulated with a second modulation technique. Further, a method, an arrangement and a computer program product in a terminal for demodulating information received from a base station are described. In addition, a method, an arrangement and a computer program product in a control node are described.Type: ApplicationFiled: March 31, 2014Publication date: July 31, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Håkan Axelsson, Stefan Eriksson, Anders Malm, Mårten Sundberg
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Patent number: 8724730Abstract: Method, arrangement and computer program product in a base station for transmitting two USF values and two data blocks to a terminal. The base station and the terminal are comprised within a wireless communication network. The two USF values are to be sent across the first data block and the second data block. The first data block and first parts of the two USF values are modulated with a first modulation technique and the second data block and second parts of the two USF values are modulated with a second modulation technique. The modulated data blocks and USF parts are transmitted to the terminal. Further, a method, an arrangement and a computer program product in a terminal for receiving USF values and data blocks from a base station are described. In addition, a method, an arrangement and a computer program product in a control node are described.Type: GrantFiled: February 9, 2009Date of Patent: May 13, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Marten Sundberg, Hakan Axelsson, Stefan Eriksson, Anders Malm
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Publication number: 20140064194Abstract: Methods and devices for generating a TFI are described. In some embodiments an extended TFI with more bits than a legacy TFI is provided and the bits of the extended TFI are added in a RLC/MAC data block or in a PAN addressing field.Type: ApplicationFiled: November 8, 2012Publication date: March 6, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Paul Schliwa-Bertling, Stefan Eriksson Löwenmark, Olof Liberg, Mårtin Sundberg
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Publication number: 20140049426Abstract: An electrically steerable antenna arrangement comprising at least a first antenna function and a second antenna function, each antenna function comprising at least one antenna element, the antenna functions having at least one main radiation lobe that is electrically steerable, where each antenna function comprises at least one signal altering means arranged for altering the time characteristics and/or phase characteristics and/or frequency characteristics of a signal fed through the signal altering means, the electrically steerable antenna arrangement comprising a control unit arranged for feeding a signal comprising control information to the antenna functions via a control connection, the signal altering means being arranged to take certain settings in dependence of the control information, such that for certain settings of the signal altering means, a certain angular direction of said main radiation lobe in relation to an antenna reference plane is acquired.Type: ApplicationFiled: April 26, 2011Publication date: February 20, 2014Applicant: SAAB ABInventors: Stefan Eriksson, Magnus Isacsson, Claes Nylund
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Publication number: 20130272273Abstract: Transmitter and receiver technologies are provided that allow more than two users in a time-slotted communications system to share the same time slot by creating orthogonal sub-channels, while keeping the receiver complexity low are provided. Moreover, the users can in accordance with some embodiments employ GMSK or other non-linear continuous phase modulation technique.Type: ApplicationFiled: September 3, 2012Publication date: October 17, 2013Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Miguel Lopez, Stefan Eriksson Löwenmark
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Patent number: 8358678Abstract: First and second groups of mobile terminal communications in a cell are defined. A basic frequency hopping sequence for both groups is identified. An offset from the basic hopping sequence is determined for each mobile terminal communication in the first and second groups and is used along with the basic frequency hopping sequence to generate an assigned frequency hopping sequence for each mobile terminal. Some of the assigned frequency hopping sequences overlap such that a first communication from the first group and a second communication from the second group simultaneously use the same time-frequency radio resource during one hop in their corresponding assigned frequency hopping sequences.Type: GrantFiled: December 30, 2008Date of Patent: January 22, 2013Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stefan Eriksson, Miguel Lopez, Mårten Sundberg
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Publication number: 20120320871Abstract: A method in a mobile station (120) for enabling more than eight mobile stations to share one uplink Packet Data Channel (PDCH) in a GSM network (100) is provided. A combination of Uplink State Flag values in a set of two or more downlink radio blocks is received. The received Uplink State Flag values of the combination are jointly interpreted. Packet data are only transmitted (706; 1402) when an assigned combination of Uplink State Flag values has been received. Conventionally in GSM only a maximum of 8 unique mobile stations can share one PDCH using one timeslot (of eight conventionally available). By the combination of the USF values and joint interpretation thereof, more than 8 unique mobile station can share the same PDCH. Compatibility is also enabled with legacy mobile stations supporting only a single USF value.Type: ApplicationFiled: February 13, 2012Publication date: December 20, 2012Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Stefan Eriksson Löwenmark, Paul Schliwa-Bertling, Märten Sundberg
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Patent number: 8311076Abstract: The invention relates to a method for transmitting call data in a digital wireless communication network, said call data being transmitted over at least one radio frequency channel in a sequence of timeslots. Call data are transmitted in the network using timeslot hopping in which the call data of each user of the network are transmitted with a different timeslot hopping sequence.Type: GrantFiled: February 3, 2009Date of Patent: November 13, 2012Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Stefan Eriksson Lowenmark, Miguel Lopez, Marten Sundberg
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Publication number: 20120269145Abstract: The invention relates to a method in a mobile network for resolving a Temporary Block Flow, a TBF, in a wireless network including one or more mobile stations exchanging data with a base station system. The packet data is transmitted by means of one or more RLC/MAC blocks each associated with the TBF. The TBF is identified by means of an Temporary Flow Identity, a TFI, and associated to an MS. The inventive method is applicable in a wireless communication system with an extended TFI addressing space. The method comprises steps of receiving a RLC/MAC block and retrieving a first TFI in the RLC/MAC header. The TFI is compared to an assigned TFI. The capability for the associated MS to resolve TBFs based on extended TFI addressing is determined. If the received first TFI matches assigned TFI and represents a comprehensive TFI for the associated MS, the payload of the RLC/MAC block is decoded.Type: ApplicationFiled: February 20, 2012Publication date: October 25, 2012Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Daniel Widell, John Walter Diachina, Stefan Eriksson Löwenmark, Paul Schliwa-Bertling, Mårten Sundberg
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Patent number: 8238276Abstract: A method of transmitting a downlink, coding scheme CS-1 RLC/MAC control message from a BSS to an EGPRS MS (61), and receiving and detecting the CS-1 RLC/MAC control message in the MS. The BSS places in an MCS-1 radio block, a CS-1 RLC/MAC control block identical to a coding scheme CS-1 RLC/MAC control message excluding the MAC header octet. The BSS also places a coding scheme CS-4 stealing bit code word in the radio block using legacy stealing bit values and positions. The CPS field (26) of the block header (25) indicates that the radio block contains a CS-1 RLC/MAC control message. The MS receives the radio block and detects the coding scheme CS-4 stealing bit code word. In response, the MS interprets the received radio block header to identify the CPS field. The MS determines from the CPS field that a CS-1 RLC/MAC control block has been received.Type: GrantFiled: March 7, 2008Date of Patent: August 7, 2012Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: John Diachina, Stefan Eriksson
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Patent number: 8031673Abstract: A handover or cell change procedure in a cellular radio communications system starts with mobile user terminal present in a serving cell and having multiple radio resources simultaneously allocated for communication with a base station of the cell. When there is a need for a cell change, the multiple radio resources are sequentially replaced with radio resources allocated to the terminal for communication with at least one base station having an associated cell different from the serving cell. This cell change procedure provides macro diversity without requiring the complexity of soft handover and has enhanced service coverage and handover robustness compared to hard handover.Type: GrantFiled: April 18, 2006Date of Patent: October 4, 2011Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stephen Craig, Stefan Eriksson
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Publication number: 20110122922Abstract: The invention relates to a method for transmitting call data in a digital wireless communication network, said call data being transmitted over at least one radio frequency channel in a sequence of timeslots. Call data are transmitted in the network using timeslot hopping in which the call data of each user of the network are transmitted with a different timeslot hopping sequence.Type: ApplicationFiled: February 3, 2009Publication date: May 26, 2011Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stefan Eriksson Lowenmark, Miguel Lopez, Marten Sundberg
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Publication number: 20100322338Abstract: Method, arrangement and computer program product in a base station for transmitting two USF values and two data blocks to a terminal. The base station and the terminal are comprised within a wireless communication network. The two USF values are to be sent across the first data block and the second data block. The first data block and first parts of the two USF values are modulated with a first modulation technique and the second data block and second parts of the two USF values are modulated with a second modulation technique. The modulated data blocks and USF parts are transmitted to the terminal. Further, a method, an arrangement and a computer program product in a terminal for receiving USF values and data blocks from a base station are described. In addition, a method, an arrangement and a computer program product in a control node are described.Type: ApplicationFiled: February 9, 2009Publication date: December 23, 2010Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Marten Sundberg, Hakan Axelsson, Stefan Eriksson, Anders Malm
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Publication number: 20100296597Abstract: In a method, modulator, transmitter and receiver, the modulator of data signals to be transmitted simultaneously to at least two receiving mobile stations in the same transmission time slot is adapted to select rotational angle of a QPSK transmission modulation, such as a hybrid ?-QPSK modulation used to modulate the data signals to the at least two mobile stations in response to the capabilities of the mobile stations that share the same transmission slot.Type: ApplicationFiled: November 11, 2008Publication date: November 25, 2010Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Miguel Lopez, Stefan Eriksson
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Patent number: 7796568Abstract: A method and apparatus for determining the content in bursts to be transmitted from a base station in a mobile network on a broadcast frequency in specific timeslots of a broadcast frequency frame structure. A current state of the logical channel allocated to the forthcoming burst is checked, and the content in the forthcoming burst is determined depending on the current channel state. A dummy burst with a base station specific training sequence is transmitted if there is no data to transmit, and if the dummy burst cannot be confused with a regular traffic burst according to the current channel state. The dummy burst contains no intelligible information to mobile terminals.Type: GrantFiled: December 18, 2003Date of Patent: September 14, 2010Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Tobias Tynderfeldt, Stephen Craig, Ari Kangas, Stefan Eriksson
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Publication number: 20100110946Abstract: A method of transmitting a downlink, coding scheme CS-1 RLC/MAC control message from a BSS to an EGPRS MS (61), and receiving and detecting the CS-1 RLC/MAC control message in the MS. The BSS places in an MCS-1 radio block, a CS-1 RLC/MAC control block identical to a coding scheme CS-1 RLC/MAC control message excluding the MAC header octet. The BSS also places a coding scheme CS-4 stealing bit code word in the radio block using legacy stealing bit values and positions. The CPS field (26) of the block header (25) indicates that the radio block contains a CS-1 RLC/MAC control message. The MS receives the radio block and detects the coding scheme CS-4 stealing bit code word. In response, the MS interprets the received radio block header to identify the CPS field. The MS determines from the CPS field that a CS-1 RLC/MAC control block has been received.Type: ApplicationFiled: March 7, 2008Publication date: May 6, 2010Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: John Diachina, Stefan Eriksson
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Publication number: 20090294616Abstract: The present invention encompasses an arrangement (1) related to a suspension hook with a discrete anchorage portion fixable via fixing means (3,(3)), to a vertically orientable support (2) and a discrete hook portion (5) coordinated with the anchorage portion. Said anchorage portion (4) displays an elongate surface section (4a) with barbs (6), while said hook portion (5) displays a short surface section (5a) with corresponding barbs (7,8) in order, in a position with the barbs cooperating, to cause the retention of said hook portion (5) against the anchorage portion (4) in one set position selectable from among a plurality of such positions. A vertically directed loading (‘F’) acting on the hook portion (5) is adapted to be absorbed by a cooperation between said barbs (8) allocated to the hook portion and barbs (6) allocated to the anchorage portion.Type: ApplicationFiled: October 31, 2006Publication date: December 3, 2009Inventors: Stefan Eriksson-Bradley, Mikael Johansson
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Publication number: 20090279587Abstract: First and second groups of mobile terminal communications in a cell are defined. A basic frequency hopping sequence for both groups is identified. An offset from the basic hopping sequence is determined for each mobile terminal communication in the first and second groups and is used along with the basic frequency hopping sequence to generate an assigned frequency hopping sequence for each mobile terminal. Some of the assigned frequency hopping sequences overlap such that a first communication from the first group and a second communication from the second group simultaneously use the same time-frequency radio resource during one hop in their corresponding assigned frequency hopping sequences.Type: ApplicationFiled: December 30, 2008Publication date: November 12, 2009Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stefan Eriksson, Miguel Lopez, Marten Sundberg
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Publication number: 20090042572Abstract: The invention relates to a handover or cell change procedure in a cellular radio communications system comprising a mobile user terminal present in a serving cell and having multiple radio resources simultaneously allocated for communication with a base station of the cell. In this procedure, when there is a need for a cell change, the multiple radio resources are sequentially replaced with radio resources allocated to the terminal for communication with at least one base station having an associated cell different from the serving cell. This cell change procedure provides macro diversity without requiring the complexity of soft handovers and has enhanced service coverage and handover robustness compared to hard handover.Type: ApplicationFiled: April 18, 2006Publication date: February 12, 2009Inventors: Stephen Craig, Stefan Eriksson
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Patent number: 7471928Abstract: The invention involves selection of modulation scheme for a mobile unit (100) having access to a link quality enhancing algorithm (130) operable only on data modulated using a subset of the available modulation schemes. The mobile unit (100) performs signal quality measurements on a communications link (410), over which data modulated with a first modulation scheme is communicated. A link quality measure is then determined for this first modulation. A quality enhancement due to operation of the algorithm (130) is also determined. This quality measure and the quality enhancement are used for generating decision information, which is reported to the network (200). There the information is used for estimating link quality measure(s) of currently non-employed modulation(s) for the mobile unit (100). The selection of a modulation scheme for the communications link is then performed based on the decision information and the estimated quality measure(s).Type: GrantFiled: June 1, 2004Date of Patent: December 30, 2008Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Johan Axnas, Stephen Craig, Dayong Chen, Stefan Eriksson