Patents by Inventor Ali Zaidi
Ali Zaidi 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: 11949621Abstract: A system and method for providing phase noise-based signal design for positioning in a communication system. In one embodiment, an apparatus is configured to receive configuration parameters for a reference signal based on a level of phase noise for the reference signal estimated by a user equipment, apply the configuration parameters to the reference signal to obtain a modified reference signal, and transmit the modified reference signal to the user equipment to enable a position of the user equipment to be determined.Type: GrantFiled: November 7, 2019Date of Patent: April 2, 2024Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Satyam Dwivedi, Ali Zaidi, Dehan Luan
-
Patent number: 11800483Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.Type: GrantFiled: September 10, 2021Date of Patent: October 24, 2023Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Fredrik Gunnarsson, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
-
Patent number: 11445469Abstract: Methods and apparatuses for determining a position of a wireless device in a wireless communication network are provided. The method includes obtaining a first sequence of Time Difference of Arrivals (TDOAs) at the wireless device of reference signals, which are transmitted by and used for synchronization of a first pair of network nodes; and determining, based on the first sequence of TDOAs, a first relative distance. The method also includes obtaining a second sequence of TDOAs at the wireless device of reference signals, which are transmitted by and used for synchronization of a second pair of network nodes; and determining, based on the first sequence of TDOAs, a second relative distance. The method further includes determining the position of the wireless device based on the first and second relative distances. Corresponding computer programs and computer program carriers are also disclosed.Type: GrantFiled: February 9, 2018Date of Patent: September 13, 2022Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Satyam Dwivedi, Henrik Asplund, Jonas Medbo, Fredrik Gunnarsson, Ali Zaidi, Sara Modarres Razavi
-
Publication number: 20220217673Abstract: Systems and methods for providing measurement reporting for mobile radio network nodes are provided. Embodiments of a method performed by a user equipment (UE) comprise obtaining, from a location server, positioning assistance information comprising information for mobile radio network nodes and their corresponding downlink signal configurations, and measuring one or more positioning parameters corresponding to each of one or more mobile radio network nodes. In another embodiment, a method performed by a location server comprises determining mobile radio network nodes in a vicinity of a UE, and sending, to the UE, positioning assistance information comprising information for mobile radio network nodes and their corresponding downlink signal configurations.Type: ApplicationFiled: May 15, 2019Publication date: July 7, 2022Inventors: Ali Zaidi, Ritesh Shreevastav, Fredrik Gunnarsson, Henrik Rydén, Satyam Dwivedi, Sara Modarres Razavi
-
Publication number: 20220070818Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.Type: ApplicationFiled: September 10, 2021Publication date: March 3, 2022Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Fredrik GUNNARSSON, Sara Modarres Razavi, Henrik Ryden, Meng Wang, Ali Zaidi
-
Publication number: 20220006589Abstract: A system and method for providing phase noise-based signal design for positioning in a communication system. In one embodiment, an apparatus is configured to receive configuration parameters for a reference signal based on a level of phase noise for the reference signal estimated by a user equipment, apply the configuration parameters to the reference signal to obtain a modified reference signal, and transmit the modified reference signal to the user equipment to enable a position of the user equipment to be determined.Type: ApplicationFiled: November 7, 2019Publication date: January 6, 2022Inventors: Satyam DWIVEDI, Ali ZAIDI, Dehan LUAN
-
Publication number: 20210112521Abstract: Methods and apparatuses for determining a position of a wireless device in a wireless communication network are provided. The method includes obtaining a first sequence of Time Difference of Arrivals (TDOAs) at the wireless device of reference signals, which are transmitted by and used for synchronization of a first pair of network nodes; and determining, based on the first sequence of TDOAs, a first relative distance. The method also includes obtaining a second sequence of TDOAs at the wireless device of reference signals, which are transmitted by and used for synchronization of a second pair of network nodes; and determining, based on the first sequence of TDOAs, a second relative distance. The method further includes determining the position of the wireless device based on the first and second relative distances. Corresponding computer programs and computer program carriers are also disclosed.Type: ApplicationFiled: February 9, 2018Publication date: April 15, 2021Inventors: Satyam DWIVEDI, Henrik ASPLUND, Jonas MEDBO, Fredrik GUNNARSSON, Ali ZAIDI, Sara MODARRES RAZAVI
-
Patent number: 10809350Abstract: Methods and devices for performing hybrid fingerprinting/observed time difference of arrival (OTDOA) positioning are described. Fingerprinting information can be used to improve OTDOA results by using the fingerprinting information to generate OTDOA assistance information. The OTDOA assistance information is sent to a user equipment, which uses the OTDOA assistance information to perform reference signal time differences (RSTDs) measurements.Type: GrantFiled: February 19, 2016Date of Patent: October 20, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Di Shu, Sara Modarres Razavi, Kunpeng Qi, Arios Yu, Ali Zaidi
-
Publication number: 20200296681Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.Type: ApplicationFiled: June 2, 2020Publication date: September 17, 2020Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Fredrik GUNNARSSON, Sara MODARRES RAZAVI, Henrik RYDÉN, Meng WANG, Ali ZAIDI
-
Publication number: 20200241106Abstract: Methods and devices for performing hybrid fingerprinting/observed time difference of arrival (OTDOA) positioning are described. Fingerprinting information can be used to improve OTDOA results by using the fingerprinting information to generate OTDOA assistance information. The OTDOA assistance information is sent to a user equipment, which uses the OTDOA assistance information to perform reference signal time differences (RSTDs) measurements.Type: ApplicationFiled: February 19, 2016Publication date: July 30, 2020Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Di SHU, Sara MODARRES RAZAVI, Kunpeng QI, Arios YU, Ali ZAIDI
-
Patent number: 10721015Abstract: A Radio Network Node (RNN) and a method for enabling an improved reception of Positioning Reference Signals (PRSs) at a communications device. The RNN and the communications device are operable in a wireless communications network. The RNN selects a first precoder and a second precoder for forming a first beam and a second beam, respectively, and obtains a precoding switching pattern relating to when the first precoder is to be applied to one or more first PRS symbols and when the second precoder is to be applied to one or more second PRS symbols. Further, the RNN transmits, to the communications device, the one or more first PRS symbols to which the first precoder is applied; and in accordance with the obtained precoding switching pattern, the RNN transmits, to the communications device, the one or more second PRS symbols to which the second precoder is applied.Type: GrantFiled: April 20, 2016Date of Patent: July 21, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Henrik Rydén, Fredrik Gunnarsson, Sara Modarres Razavi, Ali Zaidi, Meng Wang
-
Patent number: 10708881Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.Type: GrantFiled: September 20, 2019Date of Patent: July 7, 2020Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Fredrik Gunnarsson, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
-
Patent number: 10673485Abstract: A method and a receiving node for determining Time Of Arrival (TOA) for a radio signal received from a transmitting node in a wireless network. The receiving node detects the received radio signal by cross-correlating the received radio signal with a predefined reference signal transmitted by the transmitting node, to obtain a Cross-Correlated Function (CCF). The receiving node then estimates a set of candidate TOAs for respective signal components of the cross-correlated signal, and determines a final TOA for the received radio signal based on the set of candidate TOAs.Type: GrantFiled: March 30, 2016Date of Patent: June 2, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Henrik Rydén, Fredrik Gunnarsson, Sara Modarres Razavi, Ali Zaidi
-
Patent number: 10588078Abstract: Systems and methods relating to a remote wireless device for a cellular communications network are disclosed. In some embodiments, the remote wireless device is a wireless device that desires to establish a relay connection with a relay wireless device that has relay functionality. The remote wireless device includes a transceiver, a processor, and memory storing instructions executable by the processor whereby the relay wireless device is operable to rank a plurality of candidate relay wireless devices and to report a subset of the plurality of candidate relay wireless devices based on the ranking of the plurality of candidate relay wireless devices to a network node of the cellular communications network via the transceiver.Type: GrantFiled: February 4, 2019Date of Patent: March 10, 2020Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Mats Folke, Johnny Karout, Xinghua Song, Stefano Sorrentino, Pontus Wallentin, Stefan Wänstedt, Ali Zaidi
-
Publication number: 20200015188Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.Type: ApplicationFiled: September 20, 2019Publication date: January 9, 2020Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Fredrik GUNNARSSON, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
-
Patent number: 10433276Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a 5 wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using 0 the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.Type: GrantFiled: August 15, 2016Date of Patent: October 1, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Fredrik Gunnarsson, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
-
Publication number: 20190200288Abstract: Systems and methods relating to a remote wireless device for a cellular communications network are disclosed. In some embodiments, the remote wireless device is a wireless device that desires to establish a relay connection with a relay wireless device that has relay functionality. The remote wireless device includes a transceiver, a processor, and memory storing instructions executable by the processor whereby the relay wireless device is operable to rank a plurality of candidate relay wireless devices and to report a subset of the plurality of candidate relay wireless devices based on the ranking of the plurality of candidate relay wireless devices to a network node of the cellular communications network via the transceiver.Type: ApplicationFiled: February 4, 2019Publication date: June 27, 2019Inventors: Mats Folke, Johnny Karout, Xinghua Song, Stefano Sorrentino, Pontus Wallentin, Stefan Wänstedt, Ali Zaidi
-
Patent number: 10270544Abstract: The disclosed embodiments relates to a method performed by an D2D capable UE (800) and also relates to the D2D capable UE (800) for determining link quality of a D2D signal or D2D channel. The method includes receiving (710) a D2D signal or channel transmitted from another D2D capable UE; if detection (720) of the D2D signal or channel is determined to be successful; identifying (730) the identity of the other D2D capable UE; measuring (740) received signal power on resources of the D2D signal or channel; measuring (750) signal strength indicator on resources of the D2D signal or channel or on other resources different from the resources of the D2D signal or channel; and determining (760) link quality based on the measured received signal power and based on the measured signal strength indicator.Type: GrantFiled: March 8, 2016Date of Patent: April 23, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Ali Zaidi, Stefano Sorrentino
-
Publication number: 20190104431Abstract: A method performed by a wireless device for adapting measurement report resolution is disclosed. The method comprises performing a measurement, determining a measurement report resolution to be used, and sending a measurement report to the network node encoded based on the determined measurement report resolution. According to additional embodiments, prior to determining the measurement report resolution to be used, the wireless device informs the network node of the wireless device's capabilities of sending measurement reports encoded based on a plurality of different measurement report resolutions. According to additional embodiments, subsequent to informing the network node of the wireless device's capabilities, and prior to determining the measurement report resolution to be used, the wireless device receives a desired measurement report resolution from the network node.Type: ApplicationFiled: September 23, 2016Publication date: April 4, 2019Inventors: Fredrik Gunnarsson, Yufei Blankenship, Sara Modarres Razavi, Henrik Rydén, Iana Siomina, Kai-Erik Sunell, Riikka Susitaival, Meng Wang, Ali Zaidi
-
Publication number: 20190089405Abstract: A method and a receiving node for determining Time Of Arrival (TOA) for a radio signal received from a transmitting node in a wireless network. The receiving node detects the received radio signal by cross-correlating the received radio signal with a predefined reference signal transmitted by the transmitting node, to obtain a Cross-Correlated Function (CCF). The receiving node then estimates a set of candidate TOAs for respective signal components of the cross-correlated signal, and determines a final TOA for the received radio signal based on the set of candidate TOAs.Type: ApplicationFiled: March 30, 2016Publication date: March 21, 2019Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Henrik Rydén, Fredrik Gunnarsson, Sara Modarres Razavi, Ali Zaidi