Patents by Inventor Mehdi Amirijoo
Mehdi Amirijoo 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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Patent number: 11659598Abstract: Method of performing a random access procedure between a User Equipment, UE, and a radio access network, wherein two access nodes comprise different sets of signature sequences, wherein said signature sequences are used, by said access nodes, to differentiate requests coming from different UEs, said method comprising the steps of receiving a random access request from said UE, wherein said random access request comprises a signature sequence, determining that said random access request is intended for said first radio access node based on said signature sequence comprised by said request, receiving, from a second access node, said random access request, thereby indicating that said second radio access node has also received said random access request from said UE, and sending a response based on said received random access request from said UE and based on said random access request received from said second radio access node.Type: GrantFiled: April 19, 2021Date of Patent: May 23, 2023Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Rasmus Axén, Mehdi Amirijoo, Håkan Axelsson, Walter Müller, Paul Schliwa-Bertling
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Patent number: 11296844Abstract: A method of allocating reference signals for determining radio link quality, in a source node, the method triggering or comprising the steps of: Transmitting to a candidate node information about at least one reference signal allocated for transmission in at least one beam controlled by the source node and/or information about one or more reference signals eligible to be allocated for a transmission in at least one beam controlled by the candidate node.Type: GrantFiled: June 17, 2016Date of Patent: April 5, 2022Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Håkan Axelsson, Mehdi Amirijoo, Stefan Engström, Paul Stjernholm
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Publication number: 20210259023Abstract: Method of performing a random access procedure between a User Equipment, UE, and a radio access network, wherein two access nodes comprise different sets of signature sequences, wherein said signature sequences are used, by said access nodes, to differentiate requests coming from different UEs, said method comprising the steps of receiving a random access request from said UE, wherein said random access request comprises a signature sequence, determining that said random access request is intended for said first radio access node based on said signature sequence comprised by said request, receiving, from a second access node, said random access request, thereby indicating that said second radio access node has also received said random access request from said UE, and sending a response based on said received random access request from said UE and based on said random access request received from said second radio access node.Type: ApplicationFiled: April 19, 2021Publication date: August 19, 2021Inventors: Rasmus Axén, Mehdi Amirijoo, Håkan Axelsson, Walter Müller, Paul Schliwa-Bertling
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Patent number: 11013037Abstract: Method of performing a random access procedure between a User Equipment, UE, and a radio access network, wherein two access nodes comprise different sets of signature sequences, wherein said signature sequences are used, by said access nodes, to differentiate requests coming from different UEs, said method comprising the steps of receiving a random access request from said UE, wherein said random access request comprises a signature sequence, determining that said random access request is intended for said first radio access node based on said signature sequence comprised by said request, receiving, from a second access node, said random access request, thereby indicating that said second radio access node has also received said random access request from said UE, and sending a response based on said received random access request from said UE and based on said random access request received from said second radio access node.Type: GrantFiled: July 26, 2019Date of Patent: May 18, 2021Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Rasmus Axén, Mehdi Amirijoo, Håkan Axelsson, Walter Müller, Paul Schliwa-Bertling
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Patent number: 10959272Abstract: Methods may be provided to operate a wireless terminal UE in a wireless communication network. Responsive to receiving a request for a primary identification of a non-serving base station for the wireless terminal, transmission to the non-serving base station for the wireless terminal may be initiated using a random access channel RACH configuration. A random access response RAR may be received from the non-serving base station. Moreover, the random access response may be received with the primary identification of the non-serving base station, and the random access response may be responsive to the transmission using the RACH configuration. The primary identification of the non-serving base station may be transmitted to a node of the wireless communication network other than the non-serving base station.Type: GrantFiled: February 28, 2018Date of Patent: March 23, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Pradeepa Ramachandra, Mehdi Amirijoo, Icaro L. J. da Silva, Fredrik Gunnarsson, Stefan Wager
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Patent number: 10880760Abstract: Methods, nodes and arrangements for supporting identification of one or more neighboring network nodes comprised in a wireless communication network. A communication device is associated with a communicative connection to a first network node, e.g. a serving base station. The communication device obtains a first identifier identifying the first network node, and transmits the obtained first identifier in an uplink so that the first identifier is receivable by one or more other, second network nodes, e.g. non-serving base stations. Receipt of the first identifier by a second network node enables identification of the first radio network node as neighboring said second radio network node. The second network node obtains, based on the first identifier, an address of the first network node, and/or a second identifier uniquely identifying the first network node, in the wireless communication network.Type: GrantFiled: September 13, 2016Date of Patent: December 29, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Pradeepa Ramachandra, Mehdi Amirijoo, Andreas Bergström, Fredrik Gunnarsson
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Patent number: 10517023Abstract: Support of mobility for a communication device (120) being served in a serving beam (115a) transmitted by a first network node (110) comprised in a wireless communication network (100). The first network node (110) and the communication device (120) obtains (301a, 302; 701, 901) a first information set comprising predetermined identifiers identifying reference signals, respectively. The first network node (110) maintains (310; 904) a third information set that associates one or more candidate beams (115b, 116a-c), other than the serving beam (115a), with one or more predetermined identifiers of the first information set, which one or more predetermined identifiers identify reference signals that are being transmitted in said one or more candidate beams (115, 116a-c).Type: GrantFiled: September 29, 2016Date of Patent: December 24, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Håkan Axelsson, Mehdi Amirijoo, Rasmus Axén, Patrik Karlsson, Walter Müller, Christer Östberg, Henrik Ronkainen, Thomas Walldeen
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Publication number: 20190350008Abstract: Method of performing a random access procedure between a User Equipment, UE, and a radio access network, wherein two access nodes comprise different sets of signature sequences, wherein said signature sequences are used, by said access nodes, to differentiate requests coming from different UEs, said method comprising the steps of receiving a random access request from said UE, wherein said random access request comprises a signature sequence, determining that said random access request is intended for said first radio access node based on said signature sequence comprised by said request, receiving, from a second access node, said random access request, thereby indicating that said second radio access node has also received said random access request from said UE, and sending a response based on said received random access request from said UE and based on said random access request received from said second radio access node.Type: ApplicationFiled: July 26, 2019Publication date: November 14, 2019Inventors: Rasmus Axén, Mehdi Amirijoo, Håkan Axelsson, Walter Müller, Paul Schliwa-Bertling
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Publication number: 20190334673Abstract: A method of allocating reference signals for determining radio link quality, in a source node, the method triggering or comprising the steps of: Transmitting to a candidate node information about at least one reference signal allocated for transmission in at least one beam controlled by the source node and/or information about one or more reference signals eligible to be allocated for a transmission in at least one beam controlled by the candidate node.Type: ApplicationFiled: June 17, 2016Publication date: October 31, 2019Inventors: Håkan Axelsson, Mehdi Amirijoo, Stefan Engström, Paul Stjernholm
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Patent number: 10412768Abstract: Method of performing a random access procedure between a User Equipment, UE, and a radio access network, wherein two access nodes comprise different sets of signature sequences, wherein said signature sequences are used, by said access nodes, to differentiate requests coming from different UEs, said method comprising the steps of receiving a random access request from said UE, wherein said random access request comprises a signature sequence, determining that said random access request is intended for said first radio access node based on said signature sequence comprised by said request, receiving, from a second access node, said random access request, thereby indicating that said second radio access node has also received said random access request from said UE, and sending a response based on said received random access request from said UE and based on said random access request received from said second radio access node.Type: GrantFiled: November 9, 2016Date of Patent: September 10, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Rasmus Axén, Mehdi Amirijoo, Håkan Axelsson, Walter Müller, Paul Schliwa-Bertling
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Patent number: 10349258Abstract: Identification of network nodes (110a-c) of a first Radio Access Technology, “RAT”, and of a wireless communication network (100), which network nodes (110a-c) are at least potentially neighboring each other. Multiple information sets associated with multiple communication devices (120a-c), respectively, are obtained (204a-b; 401). Each communication device (120a-c) supports both the first RAT and another, second RAT. Each information set, thus associated with a communication device (120a), identifies a network node (110a) of the first RAT, and one or more network nodes (111a) of the second RAT that have been identified by the communication device (120a) when the communication device (120a) was associated with a communicative connection to said identified network node (110a) of the first RAT. The network nodes (110a-b) of the first RAT that are at least potentially neighboring each other are then identified (205; 402) based on the obtained multiple information sets.Type: GrantFiled: August 24, 2016Date of Patent: July 9, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Pradeepa Ramachandra, Mehdi Amirijoo, Andreas Bergström, Fredrik Gunnarsson
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Publication number: 20190208431Abstract: Methods, nodes and arrangements for supporting identification of one or more neighboring network nodes comprised in a wireless communication network. A communication device is associated with a communicative connection to a first network node, e.g. a serving base station. The communication device obtains a first identifier identifying the first network node, and transmits the obtained first identifier in an uplink so that the first identifier is receivable by one or more other, second network nodes, e.g. non-serving base stations. Receipt of the first identifier by a second network node enables identification of the first radio network node as neighboring said second radio network node. The second network node obtains, based on the first identifier, an address of the first network node, and/or a second identifier uniquely identifying the first network node, in the wireless communication network.Type: ApplicationFiled: September 13, 2016Publication date: July 4, 2019Inventors: Pradeepa RAMACHANDRA, Mehdi AMIRIJOO, Andreas BERGSTRÖM, Fredrik GUNNARSSON
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Patent number: 10306530Abstract: A method performed by a first radio network node for handling mobility of a wireless device in a wireless communication network. The first radio network node provides radio coverage over a first service area using a first reference signal for identifying the first service area in the wireless communication network. A second radio network node provides radio coverage over a second service area using a second reference signal for identifying the second service area in the wireless communication network. The first radio network node receives a measurement report from the second radio network node, which measurement report indicates a second signal strength or quality of a second dedicated beam used for data transmission for wireless devices in the second service area. The first radio network node performs a mobility decision for the wireless device taking the second signal strength or quality, indicated in the received measurement report, into account.Type: GrantFiled: November 15, 2016Date of Patent: May 28, 2019Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Pradeepa Ramachandra, Mehdi Amirijoo, Håkan Axelsson, Rasmus Axén
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Patent number: 10278082Abstract: Network nodes (102, 104), control node (100) and methods therein, for enabling establishment of a neighbor relation between a first network node (102) and a second network node (104) in a wireless network. The control node (100) sends (1:1) or distributes, to network nodes in the network including the first network node (702), a set of reference signals reserved for neighbor relation establishment. The second network node (104) transmits (1:3) one of the reserved reference signals which is then detected by a wireless device (D1) being served by the first network node (102) which then receives (1:4), from the wireless device (D1), a measurement report indicating the detected reference signal that is recognized by the first network node (102) as belonging to the set of reserved reference signals.Type: GrantFiled: October 6, 2016Date of Patent: April 30, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Mehdi Amirijoo, Håkan Axelsson, Rasmus Axén, Fredrik Gunnarsson, Patrik Karlsson, Walter Müller, Christer Östberg, Pradeepa Ramachandra, Henrik Ronkainen, Thomas Walldeen
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Publication number: 20180332508Abstract: Support of mobility for a communication device (120) being served in a serving beam (115a) transmitted by a first network node (110) comprised in a wireless communication network (100). The first network node (110) and the communication device (120) obtains (301a, 302; 701, 901) a first information set comprising predetermined identifiers identifying reference signals, respectively. The first network node (110) maintains (310; 904) a third information set that associates one or more candidate beams (115b, 116 a-c), other than the serving beam (115a), with one or more predetermined identifiers of the first information set, which one or more predetermined identifiers identify reference signals that are being transmitted in said one or more candidate beams (115, 116a-c).Type: ApplicationFiled: September 29, 2016Publication date: November 15, 2018Inventors: Häkan Axelsson, Mehdi Amirijoo, Rasmus Axén, Patrik Karlsson, Walter Müller, Christer Östberg, Henrik Ronkainen, Thomas Walldeen
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Publication number: 20180302928Abstract: Method of performing a random access procedure between a User Equipment, UE, and a radio access network, wherein two access nodes comprise different sets of signature sequences, wherein said signature sequences are used, by said access nodes, to differentiate requests coming from different UEs, said method comprising the steps of receiving a random access request from said UE, wherein said random access request comprises a signature sequence, determining that said random access request is intended for said first radio access node based on said signature sequence comprised by said request, receiving, from a second access node, said random access request, thereby indicating that said second radio access node has also received said random access request from said UE, and sending a response based on said received random access request from said UE and based on said random access request received from said second radio access node.Type: ApplicationFiled: November 9, 2016Publication date: October 18, 2018Inventors: Rasmus Axén, Mehdi Amirijoo, Håkan Axelsson, Walter Müller, Paul Schliwa-Bertling
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Publication number: 20180288675Abstract: According to an aspect, a wireless device receives, from a first node, a blacklist with random access response identifiers. The wireless device transmits a random access preamble to initiate random access to another node and receives a random access response. The wireless device compares a random access response identifier included in the received random access response to the random access response identifiers in the blacklist and establishes a connection to a second node that corresponds to the received random access response, responsive to determining that the random access response identifier in the received random access response is not included in the blacklist. The wireless device sends, to the second node, an identifier for the first node or an identifier for a beam transmitted by the first node, or both.Type: ApplicationFiled: October 27, 2016Publication date: October 4, 2018Inventors: Fredrik Gunnarsson, Pradeepa Ramachandra, Rasmus Axén, Thomas Walldeen, Patrik Karlsson, Christer Östberg, Håkan Axelsson, Henrik Ronkainen, Walter Müller, Mehdi Amirijoo
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Publication number: 20180270729Abstract: A method performed by a first radio network node for handling mobility of a wireless device in a wireless communication network. The first radio network node provides radio coverage over a first service area using a first reference signal for identifying the first service area in the wireless communication network. A second radio network node provides radio coverage over a second service area using a second reference signal for identifying the second service area in the wireless communication network. The first radio network node receives a measurement report from the second radio network node, which measurement report indicates a second signal strength or quality of a second dedicated beam used for data transmission for wireless devices in the second service area. The first radio network node performs a mobility decision for the wireless device taking the second signal strength or quality, indicated in the received measurement report, into account.Type: ApplicationFiled: November 15, 2016Publication date: September 20, 2018Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Pradeepa RAMACHANDRA, Mehdi AMIRIJOO, Håkan AXELSSON, Rasmus AXÉN
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Publication number: 20180249351Abstract: Network nodes (102, 104), control node (100) and methods therein, for enabling establishment of a neighbour relation between a first network node (102) and a second network node (104) in a wireless network. The control node (100) sends (1:1) or distributes, to network nodes in the network including the first network node (702), a set of reference signals reserved for neighbour relation establishment. The second network node (104) transmits (1:3) one of the reserved reference signals which is then detected by a wireless device (D1) being served by the first network node (102) which then receives (1:4), from the wireless device (D1), a measurement report indicating the detected reference signal that is recognized by the first network node (102) as belonging to the set of reserved reference signals.Type: ApplicationFiled: October 6, 2016Publication date: August 30, 2018Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Mehdi AMIRIJOO, Håkan AXELSSON, Rasmus AXÉN, Fredrik GUNNARSSON, Patrik KARLSSON, Walter MÜLLER, Christer ÖSTBERG, Pradeepa RAMACHANDRA, Henrik RONKAINEN, Thomas WALLDEEN
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Patent number: 9992720Abstract: A method in a base station (110) for enabling the base station (110) to identify a neighboring base station (120) is provided. A request is being sent (303) to a user equipment (130), commanding it to send an identification requesting message to the neighboring base station (120). In response to reception of the sent identification requesting message, a neighboring base station identifier that is associated with and identifies the neighboring base station (120), is received (303). Thereby the base station (110) is enabled to identify the neighboring base station (120). By receipt of the neighboring base station identifier, the base station becomes aware of and is enabled to contact, or connect with, the neighboring base station more directly, without the need of doing it through the user equipment. This can be done at some later point in time, for example in order to request the neighboring base station to perform handover measurements with regard to the same or another user equipment.Type: GrantFiled: December 20, 2011Date of Patent: June 5, 2018Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Mehdi Amirijoo, Pål Frenger, Fredrik Gunnarsson, Johan Moe