Patents by Inventor Miguel Lopez
Miguel Lopez 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).
-
Patent number: 11968067Abstract: A method of signalling in a Wireless Local Area Network, WLAN, includes transmitting a signal having a physical layer data unit via a wireless channel of the WLAN using plural subcarriers spaced across plural symbols, the physical layer data unit having a data packet and a preamble, wherein the preamble has a synchronisation part having a channel estimation part. The channel estimation part has N training symbols, where N is an integer greater than 1, the N training symbols have synchronisation information for synchronising a second wireless device with the first wireless device, the synchronisation information having an offset value, and synchronisation information transmitted in second and subsequent training symbols is transmitted using offset subcarriers, the offset subcarriers being frequency offset with respect to reference subcarriers used to transmit synchronisation information in a first training symbol, the frequency offset being equal to the offset value.Type: GrantFiled: July 10, 2020Date of Patent: April 23, 2024Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Miguel Lopez, Leif Wilhelmsson
-
Publication number: 20240129949Abstract: A method is disclosed for a sensing coordination device associated with one or more wireless sensing devices comprising a first wireless sensing device. The method comprises determining a threshold value for the first wireless sensing device, wherein the threshold value is for comparison with a difference between channel estimates of wireless sensing measurements of the first wireless sensing device, and causing application of the threshold value in control of operation of the first wireless sensing device for performing wireless sensing measurements. A method for the first wireless sensing device is also disclosed.Type: ApplicationFiled: February 12, 2021Publication date: April 18, 2024Inventors: Leif Wilhelmsson, Miguel Lopez, Hugo Tullberg
-
Publication number: 20240107345Abstract: A wireless communication device (11) maintains, on a first channel, a radio link to a further wireless communication device (10). The wireless communication device (11) sends, to the further wireless communication device (11), an indication that the wireless communication device supports multi-link operation. Further, the wireless communication device (11) receives a request from the further wireless communication device (10). In response to the request, the wireless communication device (11) utilizes the multi-link operation to perform at least one measurement on a second channel while maintaining the radio link to the further wireless communication device (10). Further, the wireless communication device (11) sends, to the further wireless communication device, one or more measurement reports representing the at least one measurement.Type: ApplicationFiled: December 23, 2020Publication date: March 28, 2024Inventors: Miguel Lopez, Jonas Sedin, Abhishek Ambede, Leif Wilhelmsson
-
Patent number: 11936509Abstract: A transmitter and method therein for transmitting a signal to a receiver in a wireless communication system are disclosed. The transmitter is configured to modulate a signal using two different modulations, a combination of binary amplitude shift keying, ASK, and binary frequency shift keying, FSK, and transmit the modulated signal.Type: GrantFiled: January 25, 2019Date of Patent: March 19, 2024Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Leif Wilhelmsson, Henrik Sjöland, Miguel Lopez
-
Patent number: 11929780Abstract: Methods, apparatus and non-transitory machine-readable mediums are provided for wireless communication in communication networks comprising a wireless device, a radio access network node and a wireless light communication network node. In one embodiment, a method is performed by a node (102, 104, 120) of a wireless communication network (100), the wireless communication network comprising a wireless device (104), a radio access network node (102) and one or more wireless light communication (LC) network nodes (106). At least one of the wireless device and the radio access network node comprise a plurality of antenna elements configurable to provide a transmit or receive beam (110, 112) for communication with the other of the wireless device and the radio access network node.Type: GrantFiled: June 24, 2019Date of Patent: March 12, 2024Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Athanasios Stavridis, Miguel Lopez, Leif Wilhelmsson
-
Publication number: 20240080892Abstract: A method is disclosed for a sensing correction device. The sensing coordination device is associated with one or more sensing receiver devices and a radio access node configured for communication with one or more wireless communication devices. The method comprises selecting at least one of the sensing receiver devices in association with a time interval, instructing the selected sensing receiver devices to perform sensing measurements during the time interval, and causing transmission (during the time interval) of a communication packet between the radio access node and at least one of the wireless communication devices which differs from the selected at least one sensing receiver device. A method is also disclosed for a sensing receiver device.Type: ApplicationFiled: January 25, 2021Publication date: March 7, 2024Inventors: Leif Wilhelmsson, Miguel Lopez
-
Publication number: 20240064734Abstract: Systems and methods are disclosed herein for coordinated uplink transmission. In one embodiment, a method performed by a wireless communication device comprises obtaining a configuration of a plurality of sets of resources for cooperative uplink transmission. The plurality of sets of resources comprises N sets of resources that are mapped to N possible data elements that can be communicated by a cooperative uplink transmission by a group of two or more wireless devices including the wireless communication device. N is an integer number that is greater than or equal to 2. The method further comprises transmitting a transmission using at least a subset of a particular set of resources from among the N sets of resources that is mapped to a particular data element from among the N possible data elements that is to be communicated by the wireless communication device for the cooperative uplink transmission.Type: ApplicationFiled: December 18, 2020Publication date: February 22, 2024Inventors: Hieu Do, Talha Khan, Kittipong Kittichokechai, Miguel Lopez, Jeong Hun Kim
-
Publication number: 20240048424Abstract: A method is disclosed for transferring data symbols between a transmitter and a receiver. The method comprises specifying communication symbols through application of a transform to a representation of the data symbols, and conveying a signal indicative of the communication symbols from the transmitter to the receiver. When expressed as a transform matrix, the transform has at least the following properties: that a ratio (between number of zero-valued elements of the transform matrix and number of non-zero-valued elements of the transform matrix) equals or exceeds a sparsity threshold, and that a number of columns of the transform matrix that has a zero-valued element sum equals or exceeds an angle distortion mitigation threshold.Type: ApplicationFiled: December 14, 2020Publication date: February 8, 2024Inventors: Miguel LOPEZ, Leif WILHELMSSON
-
Patent number: 11894962Abstract: A method of transmitting an Orthogonal Frequency Division Multiplexing, OFDM, symbol having a guard interval including a cyclically repeated part of an original symbol comprises applying a guard interval for the OFDM symbol, the guard interval including a first part, where the first part is a cyclic prefix, including an indication whether the applied guard interval has a second part, wherein the second part is a cyclic prefix and/or postfix, applying, when indicated to be present, the second part of the guard interval, and transmitting the OFDM symbol. A method of receiving the symbol, transmitter, receiver and computer programs for implementing the methods are also disclosed.Type: GrantFiled: July 10, 2020Date of Patent: February 6, 2024Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Dennis Sundman, Miguel Lopez
-
Publication number: 20240040516Abstract: Apparatuses and methods are disclosed for joint downlink/uplink (DL/UL) scheduling and parameter selection for constrained simultaneous transmit and receive (STR) access point (AP) multi-link devices (MLDs). In one embodiment, a STR capable MLD includes an AP STA. The MLD is configured to jointly schedule an uplink communication on a first link and a simultaneous downlink communication on a second link by selecting a first non-access point (non-AP) station (STA) for the uplink communication and a second non-AP STA for the simultaneous downlink communication out of a plurality of non-AP STAs, the first and second links being a STR constrained pair of links, the first link being associated with the first non-AP STA, the second link being associated with the second non-AP STA, and the first and second non-AP STAs not being affiliated with a same MLD.Type: ApplicationFiled: December 16, 2020Publication date: February 1, 2024Inventors: Rocco DI TARANTO, Leif WILHELMSSON, Abhishek AMBEDE, Miguel LOPEZ
-
Publication number: 20240031117Abstract: Apparatuses and methods for simultaneous transmit and receive (STR) multi-link operations (MLO) are disclosed. In one embodiment, a multi-link device (MLD) is configured to select at least one communication parameter value for a pair of radio links to enable STR on the pair of radio links between the MLD and a second MLD, the second MLD including a non-access point (non-AP) station (STA) and the selected at least one communication parameter value including a value of at least one of: at least one first communication parameter for a first link in the pair and at least one second communication parameter for a second link in the pair. In one embodiment, a MLD is configured to transmit information about a pair of radio links; and perform a multi-link operation (MLO) on the pair of radio links using at least one communication parameter value based at least in part on the transmitted information.Type: ApplicationFiled: December 9, 2020Publication date: January 25, 2024Inventors: Abhishek AMBEDE, Leif WILHELMSSON, Miguel LOPEZ
-
Publication number: 20240015787Abstract: An access point (10) of a wireless communication system contends for access to a medium. In response to gaining access to the medium, the access point (10) reserves a transmission opportunity, TXOP, on the medium. The access point (10) cooperates with one or more further access points (10) of the wireless communication system by sharing the TXOP based on spatial reuse of at least some radio resources of the TXOP for transmission of multiple physical protocol data units, PPDUs, by each of the access points (10). Further, the access point (10) coordinates transmissions of acknowledgment information for each of the multiple PPDUs within the TXOP.Type: ApplicationFiled: September 17, 2021Publication date: January 11, 2024Inventors: Charlie Pettersson, Jonas Sedin, Miguel Lopez, Sebastian Max
-
Publication number: 20240015544Abstract: A first wireless device (WD) configured to communicate with a second WD is provided. The first WD is configured to, and/or includes a radio interface and/or includes processing circuitry configured to receive a request for a communication measurement, perform the communication measurement based at least on the received request, and transmit a measurement report. The measurement report includes at least the performed communication measurement. Methods and other apparatuses are also disclosed.Type: ApplicationFiled: November 25, 2021Publication date: January 11, 2024Inventors: Jonas SEDIN, Abhishek AMBEDE, Miguel LOPEZ
-
Publication number: 20240007889Abstract: A method, system and apparatus are disclosed. According to one or more embodiments, a network node configured to communicate with a wireless device (WD) is provided. The network node is configured to, and/or includes a radio interface and/or includes processing circuitry configured to transmit a measurement request for the wireless device to perform a measurement on a non-operating channel where the measurement request includes an indication that the network node is configured to prioritize data traffic for the wireless device. The processing circuitry and/or radio interface is further configured to optionally receive a message associated with the measurement request where the message indicates whether the measurement associated with the measurement request was performed.Type: ApplicationFiled: November 25, 2021Publication date: January 4, 2024Inventors: Miguel LOPEZ, Jonas SEDIN, Abhishek AMBEDE
-
Publication number: 20240008080Abstract: Channel access coordination for TXOP sharing An access point of a wireless communication system operates on a primary bandwidth part 5 (Ch2, Ch3) of a medium. This operation on the primary bandwidth part (Ch2, Ch3) is based on carrier sensing to gain access to the primary bandwidth part of the medium. Further, the access point scans a secondary bandwidth part (Ch1, Ch2) of the medium to detect control messages transmitted on the secondary bandwidth part (Ch1, Ch2), without performing carrier sensing to gain access to the secondary bandwidth part (Ch1, Ch2) of the medium. Further, the AP 10 detects a control message indicating that another AP reserved a transmission opportunity, TXOP, on the secondary bandwidth part (Ch1, Ch2) of the medium. In response to the control message, the AP cooperates with the other AP by sharing the TXOP for performing one or more transmissions of data.Type: ApplicationFiled: November 17, 2020Publication date: January 4, 2024Inventors: Charlie Pettersson, Dennis Sundman, Miguel Lopez, Rocco Di Taranto
-
Patent number: 11855785Abstract: A technique for performing a multi-layer transmission from a transmitting station to a receiving station on a radio frequency is described. The multi-layer transmission comprises multiple layers having different robustnesses (704, 706) on the radio frequency. As to a method aspect of the technique, first data of a first hybrid automatic repeat request, HARQ, process is transmitted on a first layer of the multi-layer transmission simultaneously with second data of a second HARQ process on a second layer of the multi-layer transmission.Type: GrantFiled: February 14, 2020Date of Patent: December 26, 2023Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Leif Wilhelmsson, Rocco Di Taranto, Miguel Lopez, Jung-Fu Cheng
-
Publication number: 20230396363Abstract: A method is for controlling interleaving, within a packet for transmission, of second type symbols amongst first type symbols. The first type symbols comprise error correction encoded data modulated using a first modulation alphabet and the second type symbols are for communication parameter estimation and comprise error correction encoded data modulated using a second modulation alphabet which is smaller than the first modulation alphabet. The data modulated using the second modulation alphabet is encoded with a same error correcting code as the data modulated using the first modulation alphabet. The method comprises determining (340) one or more of: an interleaving density of the second type symbols, a type of the second modulation alphabet, and a size of the second modulation alphabet.Type: ApplicationFiled: October 25, 2021Publication date: December 7, 2023Inventors: Leif Wilhelmsson, Miguel Lopez
-
Patent number: 11838866Abstract: Embodiments include methods for a wireless communication device comprising a main receiver and a wake-up receiver (WUR) having a channel selective filter. Such methods include determining a correlation metric for the WUR, based on the following: a signal received via the WUR using the channel selective filter configured according to a first one of a plurality of available bandwidths, and a reference signal that is representative of a wake-up signal (WUS) transmitted by an access point node. Such methods include detecting a WUS included in the received signal based on the correlation metric in relation to a first threshold, and in response to detecting the WUS, selecting a second one of the available bandwidths for the channel selective filter, based on the correlation metric in relation to a second threshold. Other embodiments include complementary methods for an access point node, as well as apparatus configured to perform such methods.Type: GrantFiled: November 30, 2022Date of Patent: December 5, 2023Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Leif Wilhelmsson, Miguel Lopez, Sven Mattisson, Dennis Sundman
-
Publication number: 20230362841Abstract: Methods, apparatus, and device-readable mediums are disclosed relating to wireless access in a network requiring a carrier-sense mechanism. One aspect provides a method performed by a transmitting device for transmitting to a receiving device in a wireless communications network. The transmitting device comprises a plurality of antenna elements. The method comprises: performing a directional carrier-sense assessment for one or more sub-bands configured for transmissions between the transmitting device and the receiving device, the directional carrier-sense assessment utilizing beamforming to detect a respective level of wireless activity on each of the sub-bands in a particular direction for transmissions to the receiving device; selecting a respective transmit power for each sub-band based on the determined level of wireless activity; and transmitting to the receiving device in the particular direction, using the respective selected transmit power for each sub-band.Type: ApplicationFiled: May 16, 2023Publication date: November 9, 2023Inventors: Dennis Sundman, Mehmet Burak Guldogan, Miguel Lopez, Leif Wilhelmsson
-
Patent number: 11811573Abstract: Methods and apparatus are provided. In an example aspect, a method of transmitting a multicarrier symbol comprising a plurality of subcarriers simultaneously from a plurality of antennas is provided. Each subcarrier is associated with a respective orthogonal matrix. The method comprises transmitting the symbol from the plurality of antennas such that, for each antenna, the symbol transmitted from each subcarrier is multiplied by an element of a respective row of the matrix associated with the subcarrier, wherein the row is associated with the antenna. The matrices are selected such that from each antenna, the symbol transmitted from at least one subcarrier is multiplied by a non-zero element, and the symbol transmitted from at least one other subcarrier is multiplied by a zero element.Type: GrantFiled: September 16, 2019Date of Patent: November 7, 2023Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Miguel Lopez, Leif Wilhelmsson