Patents by Inventor Peter Butovitsch
Peter Butovitsch 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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Base station, apparatus and methods therein for handling uplink-to-downlink interference between UEs
Patent number: 9787420Abstract: Example embodiments presented herein are directed towards methods for handling uplink-to-downlink interference between a first UE served by a first BS and a second UE served by a second BS, the first BS and the second BS being with full-duplex mode. According to the methods, the first BS receives from the first UE information about a first received signal quality associated with the first BS and a second received signal quality associated with the second BS. The first BS generates a full-duplex interference list associated with the second BS by putting the first UE into the full-duplex interference list if a difference between the first received signal quality and the second received signal quality is smaller than a threshold. Example embodiments are also towards methods for scheduling downlink reception and methods for scheduling uplink transmission.Type: GrantFiled: November 28, 2013Date of Patent: October 10, 2017Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Yi Wu, Yunfei Wang, Paul Peter Butovitsch -
Base Station, Apparatus and Methods therein for Handling Uplink-to-Downlink Interference between UEs
Publication number: 20170033881Abstract: Example embodiments presented herein are directed towards methods for handling uplink-to-downlink interference between a first UE served by a first BS and a second UE served by a second BS, the first BS and the second BS being with full-duplex mode. According to the methods, the first BS receives from the first UE information about a first received signal quality associated with the first BS and a second received signal quality associated with the second BS. The first BS generates a full-duplex interference list associated with the second BS by putting the first UE into the full-duplex interference list if a difference between the first received signal quality and the second received signal quality is smaller than a threshold. Example embodiments are also towards methods for scheduling downlink reception and methods for scheduling uplink transmission.Type: ApplicationFiled: November 28, 2013Publication date: February 2, 2017Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Yi Wu, Yunfei Wang, Paul Peter Butovitsch -
Publication number: 20160380745Abstract: The present disclosure provides a method implemented by a full duplex wireless communication device for communications using an array of antennas and the full duplex wireless communication device. The method comprises switching an operation mode of the full duplex wireless communication device between an antenna sharing mode, in which each of the antennas is used for both transmission and reception at a same frequency band, and an antenna isolation mode, in which said each of the antennas is used for either transmission or reception at the frequency band or for both transmission and reception at non-overlapping frequency subbands. The method further comprises performing full duplex wireless communications in one of the antenna sharing mode and the antenna isolation mode.Type: ApplicationFiled: January 23, 2014Publication date: December 29, 2016Inventors: Yi WU, Yunfei WANG, Paul Peter BUTOVITSCH
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Patent number: 6792276Abstract: A method and apparatus for minimizing interference in a wireless communication system. A base transceiver station transmits and receives over a first frequency band and a second frequency band. The maximum range of the first frequency band can be smaller than the maximum range of the second frequency band. Alternatively, the maximum range of the first frequency band can be larger than the maximum range of the second frequency band. Further, the maximum range of the second frequency band can vary based upon factors such as the capacity of the first frequency band and the amount of interference on the first frequency band. A control channel for the second frequency band which is measured for determining whether to handoff from the first frequency band to the second frequency band can be transmitted within the first frequency band.Type: GrantFiled: June 28, 2000Date of Patent: September 14, 2004Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Peter Butovitsch, Lars B. Johansson, Walter Muller, Petter Blomberg
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Patent number: 6708041Abstract: A power control method in accordance with the present invention synchronizes the transmit power levels at the base stations currently serving a mobile station and an initial transmit power level of a new target base station being added in a diversity handover situation. At the beginning of the handover, a radio network controller orders the serving base stations to measure their respective transmit powers to the mobile station. Each serving base station then measures its transmit power to the mobile station and reports the power level measurements to the radio network controller. An initial transmit power setting is determined for the target base station, and new transmit power settings are determined for the serving base stations synchronized for example to a particular time (t0).Type: GrantFiled: November 10, 1998Date of Patent: March 16, 2004Assignee: Telefonaktiebolaget LM (publ)Inventors: Peter Butovitsch, Peter B. Andersson
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Patent number: 6546252Abstract: Systems and methods for estimating inter-frequency measurements used for radio network functions are disclosed. The systems and methods described allow systems to evaluate the quality of a second frequency by using offset adjusted measurements on a first frequency. By using the described methods, system capacity is increased by providing a “low cost” measurement mechanism for support of handover that substantially balance the load between two or more frequency bands. By using the proposed method, handover can be performed more frequently and the interference within each frequency band can therefore be kept at a more optimal level.Type: GrantFiled: December 15, 1999Date of Patent: April 8, 2003Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Ulrich Jetzek, Walter Müller, Lars B Johansson, Petter Blomberg, Peter Butovitsch
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Patent number: 6539227Abstract: A method and system for controlling handoffs in radiocommunication systems using a softzone concept are described. Soft handoff is permitted between members of a particular softzone, but not between members of different softzones. Hard handoff is permitted between members of different softzones, but not between members of the same softzone.Type: GrantFiled: December 15, 1999Date of Patent: March 25, 2003Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Ulrich Jetzek, Petter Blomberg, Lars B. Johansson, Sture Jonsson, Peter Butovitsch
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Patent number: 6463296Abstract: A method for controlling the power transmission levels in a spread spectrum or CDMA cellular system is disclosed, in which the decision to increase or decrease the transmission power level of a mobile station or base station, and the amount of any such increase or decrease made, is based on the weighted combination of a plurality of factors that indicate existing channel conditions. For example, the weight can be set according to the reliability of each channel condition factor involved.Type: GrantFiled: February 16, 1999Date of Patent: October 8, 2002Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Riaz Esmailzadeh, Paul Peter Butovitsch
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Publication number: 20020025816Abstract: A method and a system for handling handovers in a cellular radio system where a mobile terminal (40), having a connection to at least one first base station (42), is about to establish a new connection to a second base station (41).Type: ApplicationFiled: May 17, 2001Publication date: February 28, 2002Inventors: Lars B. Johansson, Peter Butovitsch
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Patent number: 6341124Abstract: A plurality of base stations are operated in CDMA macrodiversity mode to communicate a message to a mobile station via an air interface. If the message is successfully communicated to one of the base stations via a packet network, the base station communicates the message to the mobile station via the air interface using CDMA. Otherwise, the base station refrains from communicating any message to the mobile station.Type: GrantFiled: March 13, 1998Date of Patent: January 22, 2002Assignee: Telefonaktiebolaget LM EricssonInventors: Lars B. Johansson, Paul Peter Butovitsch, Tomas Sandin
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Patent number: 6259927Abstract: Methods of controlling the power levels of transmitted signals in telecommunication systems are described. For example, a remote terminal measures the quality of a received signal, either by determining the frame error rate or the bit error rate, and reports its quality measurement to a network by sending a quality message. The network causes the signal transmitters to adjust their transmit power levels appropriately. Faster power control methods may be combined with slower power control methods for downlink (network to remote terminal) transmissions in various communications scenarios, such as soft hand-overs.Type: GrantFiled: June 6, 1997Date of Patent: July 10, 2001Assignee: Telefonaktiebolaget LM EricssonInventors: Peter Butovitsch, Tomas Sandin, Magnus Persson
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Patent number: 6154450Abstract: A CDMA mobile telecommunications system comprises a base station (20) having a radio channel connection to a mobile station (22). The base station (20) determines a signal to interference/noise ratio (SINR) with respect to the signal received from the mobile station (22), compares the signal to interference/noise ratio (SNR) for the mobile station (22) with a target signal to interference/noise ratio (TSINR), and transmits a power level command to the mobile station (22) in accordance with the comparison. A mobile switching center (24) generates information for updating the target signal to interference/noise ratio (TSINR)and transmits the information for updating the target signal to interference/noise ratio (TSINR) to the base station (20) using in-band signaling.Type: GrantFiled: August 22, 1997Date of Patent: November 28, 2000Assignee: Telefonaktiebolaget LM EricssonInventors: Bo Stefan Pontus Wallentin, Paul Peter Butovitsch
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Patent number: 6144861Abstract: The transmit power of a base station transmission to a mobile station is advantageously controlled. The base station receives a signal from the mobile station and determines a signal-to-interference ratio (SIR) associated with the received signal. The base station controls its transmit power to the mobile station using the determined SIR value in conjunction with a transmit power control command received from the mobile station. When the mobile station is in the process of a soft handover involving two or more base stations, each of those base stations determines an SIR value associated with a signal received from the mobile station. Moreover, each of the base stations controls its respective power using both the power control command received from the mobile station and the SIR determined by that base station.Type: GrantFiled: April 7, 1998Date of Patent: November 7, 2000Assignee: Telefonaktiebolaget LM EricssonInventors: Magnus Sundelin, Jens Knutsson, Paul Peter Butovitsch, Carl M. Thornberg
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Patent number: 6085107Abstract: A radio communication method and system employs power level presetting to mitigate the increase in interference caused by the discontinuous transmission of mobile stations. In the downlink, power presetting entails detecting the entry (or removal) of mobile stations to a cell, and in response thereto, calculating a plurality of power adjustment values for each mobile station within the cell. In the uplink, power presetting entails estimating an increase in interference caused by the entry (or removal) of mobile stations to a cell, and using this estimate for calculating an updated power target for each mobile station within the cell. Power presetting is also initiated in response to one or more mobile stations switching from high data-rate mode to low data-rate mode, or vice versa.Type: GrantFiled: November 20, 1997Date of Patent: July 4, 2000Assignee: Telefonaktiebolaget LM EricssonInventors: Anders H.ang.kan Persson, Paul Peter Butovitsch, Carl Magnus Thornberg, Joseph Eric Turcotte, Anisur M. Rahman
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Patent number: 6067446Abstract: A radio communication method and system employs power level presetting to mitigate the increase in interference caused by the discontinuous transmission of mobile stations. In the downlink, power presetting entails detecting the entry (or removal) of mobile stations to a cell, and in response thereto, calculating a plurality of power adjustment values for each mobile station within the cell. In the uplink, power presetting entails estimating an increase in interference caused by the entry (or removal) of mobile stations to a cell, and using this estimate for calculating an updated power target for each mobile station within the cell. Power presetting is also initiated in response to one or more mobile stations switching from high data-rate mode to low data-rate mode, or vice versa.Type: GrantFiled: July 11, 1996Date of Patent: May 23, 2000Assignee: Telefonaktiebolaget LM EricssonInventors: Anders H.ang.kan Persson, Paul Peter Butovitsch, Carl Magnus Thornberg, Joseph Eric Turcotte, Anisur M. Rahman