Patents by Inventor Miguel Berg

Miguel Berg 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).

  • Publication number: 20220159787
    Abstract: It is provided a communication device comprising: a first wired connection interface for communicating backhaul signals with more central equipment over wired connection; a mobile termination device configured to transmit and receive the backhaul signals, wherein the backhaul signals conform to a cellular mobile communication standard; a radio base station, connected to the mobile termination device, wherein the radio base station is configured to transmit and receive access signals, conforming to a cellular mobile communication standard, to and from at least one local device, the access signals containing same payload data as corresponding backhaul signals; and at least one antenna port for communicating the access signals over the air.
    Type: Application
    Filed: March 27, 2019
    Publication date: May 19, 2022
    Inventors: Miguel Berg, Elmar Trojer, Michael Petras, Roland Smith, Per-Erik Eriksson
  • Patent number: 11337114
    Abstract: A method and transition device for enabling communication of data between a remote radio unit and a central baseband unit in a wireless network. When detecting a first interface configuration used by the remote radio unit and a second interface configuration used by the baseband unit, the transition device configures interface functions, based on the first and second interface configurations. The interface functions are selected from a set of predefined interface functions associated with different interface configurations. The transition device then establishes a data flow between the remote radio unit and the central baseband unit over the transition device, and performs conversion between the first interface configuration and the second interface configuration for data communicated in the data flow, using the selected interface functions.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: May 17, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Miguel Berg, Per-Erik Eriksson, Chenguang Lu, Jacob Österling, Elmar Trojer
  • Patent number: 11329668
    Abstract: A method performed by an encoder of a base station system, for handling a data stream for transmission over a transmission connection between a remote unit and a base unit of the base station system, the remote unit being arranged to transmit wireless signals to, and receive from, mobile stations. The method comprises quantizing a plurality of IQ samples, converting the quantized plurality of IQ samples to IQ predictions, calculating per sample a difference between the quantized plurality of IQ samples and the IQ predictions in order to create IQ prediction errors. The method further comprises quantizing the IQ predictions or the IQ prediction errors, entropy encoding the IQ prediction errors and sending the entropy encoded IQ prediction errors over the transmission connection to a decoder of the base station system. The method can be performed by a decoder.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: May 10, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Miguel Berg, Chenguang Lu, Per Ola Börjesson, Daniel Cederholm, Elmar Trojer
  • Publication number: 20220123854
    Abstract: Disclosed is a method performed by a first unit, which is any of a baseband unit (170) and a radio unit (160) of abase station system (100). The method comprises transmitting a first user plane data stream to a second unit, which is the other of the baseband unit and the radio unit, over a first fronthaul link (165), using a first encoding scheme resulting in a first data rate, and transmitting a second user plane data stream to the second unit over a second fronthaul link (167), using a second encoding scheme resulting in a second data rate.
    Type: Application
    Filed: February 18, 2019
    Publication date: April 21, 2022
    Inventors: Daniel Cederholm, Miguel Berg, Chenguang Lu
  • Patent number: 11303326
    Abstract: Systems and methods for handling antenna signals are provided. In some embodiments, a method is performed by a first unit for handling antenna signals for transmission over a transmission connection with a second unit of the base station system. The base station system includes a base unit and a remote unit. The remote unit is arranged to transmit the antenna signals wirelessly to, and receive from, one or more wireless communication devices. The antenna signals each include a plurality of In-phase and Quadrature (IQ) samples. The first unit is the base unit and the second unit is the remote unit, or the first unit is the remote unit and the second unit is the base unit. In this way, quantization errors may typically add incoherently, i.e., adding quantization error power. Also, this may allow cancellation of quantization errors in certain directions depending on transformation type and transformation values.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: April 12, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Chenguang Lu, Jacob Österling, Miguel Berg
  • Patent number: 11290169
    Abstract: A method performed by a RRU of a distributed base station system, which further comprising a BBU, connected to the RRU. The RRU is arranged to wirelessly communicate with at least one UE. The method comprises determining a downlink channel estimate from received uplink signals and determining a first part of precoding coefficients to be used for precoding signals to be sent downlink to the at least one UE based on the determined downlink channel estimate. The method further comprises receiving a second part of the precoding coefficients from the BBU, precoding downlink signals of data received from the BBU using the first and the second part of the precoding coefficients and sending the precoded downlink signals to the at least one UE via the plurality of antennas.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: March 29, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Elmar Trojer, Miguel Berg, Yezi Huang, Chenguang Lu
  • Publication number: 20220095261
    Abstract: A method and network node for uplink coordinated multipoint positioning are disclosed. According to one aspect, a method includes employing a coordinated multipoint function to decode data from a WD using signals received from the WD by the network node and from signals received from the WD by a plurality of cooperating network nodes. The method further includes converting the decoded WD data signal into a time domain reference signal and convert the signals received from the plurality of cooperating network nodes into time domain neighbour signals. The method also includes cross-correlating the time domain reference signal with the time domain neighbour signals to determine a time difference of arrival for each of the plurality of time domain neighbour signals. The method also includes calculating a position of the WD based on the time differences of arrival and based on locations of the cooperating network nodes.
    Type: Application
    Filed: December 13, 2019
    Publication date: March 24, 2022
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Roland SMITH, Miguel BERG, Satyam DWIVEDI, Mike SKOF
  • Patent number: 11283539
    Abstract: Described is a method performed by an encoder of a base station system of a wireless communication network, for handling a data stream comprising a number of consecutive IQ samples for transmission over a transmission network between a remote unit and a base unit of the base station system. The remote unit is arranged to transmit wireless signals to and receive from mobile stations, each of the number of IQ samples comprising a first number of bits.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: March 22, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Aldebaro Klautau, Chenguang Lu, Leonardo Ramalho, Miguel Berg, Per Ola Börjesson, Stefan Höst
  • Publication number: 20220070797
    Abstract: Disclosed is a method performed by a first unit of a base station system of a wireless communication network for handling a signal for transmission over a fronthaul link between the first unit and a second unit of the base station system. The base station system includes a base unit and a remote unit. The method includes receiving the signal having at least one complex value, each consisting of two subparts, each being represented by a first number of bits, and transmitting the signal over the fronthaul link to the second unit, wherein at least two subparts are represented in a subgroup, the subgroup being a binary codeword having an integer number of bits that is a multiple of a second non-integer number of bits allocated per subpart, the second non-integer number of bits being fewer than the first number of bits.
    Type: Application
    Filed: December 20, 2018
    Publication date: March 3, 2022
    Inventors: Miguel BERG, Daniel CEDERHOLM, Chenguang LU
  • Publication number: 20220070045
    Abstract: In mobile communications networks, requirements on signal distortion may be fulfilled at a lower bit rate, or alternatively quantization noise be reduced for a given bit rate, by including fractional exponent bits in a block floating point format. One or more fractional exponent bits may apply to all samples in the block. Alternatively, fractional bits may apply to sub-blocks within the block. The optimal number of fractional bits depends on the number of samples in the block.
    Type: Application
    Filed: December 28, 2018
    Publication date: March 3, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Miguel BERG, Chenguang LU, Daniel CEDERHOLM, Jan ROXBERGH, Fredrik HUSS
  • Publication number: 20220070027
    Abstract: Disclosed is a method performed by a RRU of a distributed base station system of a wireless communication network, the RRU being connected to a BBU over a fronthaul link, the RRU being connected to N antennas. The method comprises obtaining uplink signals as received at the antennas from UEs wirelessly connected to the RRU, and obtaining a channel estimation matrix of wireless communication channels between UEs and the antennas. The method further comprises determining an error estimation matrix based on the channel estimation matrix, and on received reference signals yref,l, the received reference signals having L symbols, L being smaller than N, determining intermediate signals, based on the uplink signals, the channel estimation matrix and the error estimation matrix, and sending to the BBU over the fronthaul link, the determined intermediate signals.
    Type: Application
    Filed: December 19, 2018
    Publication date: March 3, 2022
    Inventors: Yezi Huang, Miguel Berg, Chenguang Lu
  • Publication number: 20220011394
    Abstract: A method and network node for differential matched summed antenna positioning are disclosed. According to one aspect, a method includes summing sequential uplink data signals at each of a plurality of antennas of the network node to produce a plurality of antenna signal sums. The method also includes selecting one of the antenna signal sums to be used as a reference antenna signal sum. A channel impulse response is determined for each of a plurality of other antennas by cross correlating the reference antenna signal sum with the others of the plurality of antenna signal sums. The method further includes estimating a time difference of arrival from the channel impulse responses of the plurality of antennas, and estimating an error of the estimated time difference of arrival of each antenna. A position of a wireless device is determined using the estimated time differences of arrival.
    Type: Application
    Filed: December 13, 2019
    Publication date: January 13, 2022
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Roland SMITH, Miguel BERG, Satyam DWIVEDI, Mike SKOF
  • Publication number: 20210399853
    Abstract: One embodiment of the disclosure provides a method performed by a first component part of a base station. The first component part comprises one of a central unit and a radio unit. The base station further comprises a second component part, which comprises the other of the central unit and the radio unit.
    Type: Application
    Filed: October 24, 2019
    Publication date: December 23, 2021
    Inventors: Jacob Österling, Fredrik Huss, Tomas Lagerqvist, Miguel Berg, Jan Roxbergh
  • Publication number: 20210289439
    Abstract: Embodiments presented herein relates to a method for saving power in remote radio heads (RRHs) of a wireless communication system. The method is performed in an RRH controller node associated with a plurality of RRHs or the same cell, each of the plurality of RRHs having at least a first antenna branch A of the cell and a second antenna branch B of the cell. The method comprises providing S120 a first power saving indication to a first RRH of the plurality of RRHs, to inactivate its first antenna branch A, and providing S120 a second power saving indication to a second RRH of the plurality of RRHs, to inactivate its second antenna branch B, wherein at least one antenna branch is kept active in the first and second RRH. RRH controller nodes, a computer programs and a computer program product for saving power in RRHs of a wireless communication system are also presented.
    Type: Application
    Filed: August 24, 2018
    Publication date: September 16, 2021
    Inventors: Miguel BERG, Chenguang LU, Daniel CEDERHOLM, André Mendes CAVALCANTE
  • Publication number: 20210235278
    Abstract: Systems, methods and apparatuses are disclosed for virtualization of radio access network technology to provide baseband processing in a cloud environment. An example method includes providing a first virtualized network node that includes a feature function. The feature function is communicatively coupled to receive baseband data from a communication stack function of a second virtualized network node. The communication stack function of the second virtualized network node receives a plurality of baseband data and provides, via a cloud data distribution system, at least a subset of the plurality of baseband data to the feature function of the first virtualized network node.
    Type: Application
    Filed: August 30, 2018
    Publication date: July 29, 2021
    Inventors: Chenguang LU, Daniel CEDERHOLM, Miguel BERG, Simon DUQUENNOY, Niklas WIRSTRÖM
  • Patent number: 11063795
    Abstract: A method performed in a scheduler entity is provided for adapting load on a fronthaul network in a radio access network comprising a central baseband unit and a remote radio unit. The central baseband unit and the remote radio unit are interconnected by the fronthaul network over which baseband signal information is exchanged. The method comprises obtaining information related to capacity of the fronthaul network, and adapting, based on the obtained information, air interface performance for at least one type of conveyed baseband signal information such as to enable adapting of load on the fronthaul network. A scheduler entity, method in a fronthaul module, computer programs and computer program products are also provided.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: July 13, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: André Mendes Cavalcante, Igor Almeida, Eduardo Lins de Medeiros, Miguel Berg
  • Publication number: 20210211940
    Abstract: According to certain embodiments, a method by a network node (860) for shifting cell borders of multiple frequency bands includes deploying at least two frequency bands. Each of the at least two frequency bands have at least two cells, and each cell have an associated cell coverage area within a common target coverage area. Each of the at least two frequency bands are associated with a respective interference area along a respective cell border, and each interference area is characterized by interference from an adjacent cell. The associated cell coverage area of at least one of the at least two frequency bands is adjusted such that the respective cell border of the at least one of the at least two frequency bands is shifted to reduce a common interference area of the at least two frequency bands. The common interference area is an area where the respective cell borders of the at least two frequency bands overlap.
    Type: Application
    Filed: August 31, 2018
    Publication date: July 8, 2021
    Inventors: Miguel Berg, Olof V. Tidblad, Gunther Auer, Stefan Strom
  • Publication number: 20210126699
    Abstract: There is provided mechanisms for processing uplink signals. A method is performed by a RRU (200). The method comprises obtaining uplink signals (S102) as received from wireless devices at antenna elements of an antenna array of the RRU (200), each wireless device being associated with its own at least one user layer. The method comprises capturing (S104) energy per user layer by combining the received uplink signals from the antenna array for each user layer into combined signals, resulting in one combined signal per user layer. The combining for each individual user layer is based on channel coefficients of the wireless device associated with said each individual user layer. The method comprises providing (S106) the combined signals to a BBU (300).
    Type: Application
    Filed: January 4, 2021
    Publication date: April 29, 2021
    Inventors: Chenguang Lu, Miguel BERG, Yezi HUANG
  • Publication number: 20210050884
    Abstract: Disclosed is receiving IQ samples of a first antenna signal related to wireless communication of a first antenna of the remote unit, and IQ samples of a second antenna signal related to wireless communication of a second antenna of the remote unit, transforming the received IQ samples of the first antenna signal into transformed IQ samples, using a first transformation value, and transforming the received IQ samples of the second antenna signal into transformed IQ samples, using a second transformation value different from the first transformation value.
    Type: Application
    Filed: March 8, 2018
    Publication date: February 18, 2021
    Inventors: Chenguang Lu, Jacob Österling, Miguel Berg
  • Patent number: 10886997
    Abstract: There is provided mechanisms for processing uplink signals. A method is performed by a RRU (200). The method comprises obtaining uplink signals (S102) as received from wireless devices at antenna elements of an antenna array of the RRU (200), wireless device being associated with its own at least one user layer. The method comprises capturing (S104) energy per user layer by combining the received uplink signals from the antenna array for each user layer into combined signals, resulting in one combined signal per user layer. The combining for each individual user layer is based on channel coefficients of the wireless device associated with said each individual user layer. The method comprises providing (S106) the combined signals to a BBU (300).
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: January 5, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Chenguang Lu, Miguel Berg, Yezi Huang