Patents by Inventor Zhiyi Xuan
Zhiyi Xuan 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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Publication number: 20230343804Abstract: Disclosed is a short-wave infrared spectrum detector, including: a photosensitive chip, including a plurality of detection pixels; a substrate; and a wavelength division component array, including a plurality of wavelength division pixels, each of the plurality of wavelength division pixels corresponding to a narrowband transmission spectrum, wherein the photosensitive chip and the wavelength division component array are monolithically integrated on both sides of the substrate, and an orthographic projection of each of the plurality of wavelength division pixels on the substrate covers an orthographic projection of at least one detection pixel on the substrate. The wavelength division structure and the photosensitive chip are integrated, so that each pixel has the ability of frequency-selective light spectrum detection, and a short-wave infrared spectrum detector integrated with wavelength division and detection is formed, realizing the miniaturization of the short-wave infrared spectral detection system.Type: ApplicationFiled: June 27, 2023Publication date: October 26, 2023Applicant: Shanghai Institute of Technical Physics, Chinese Academy of SciencesInventors: Shaowei WANG, Zhiyi XUAN, Qingquan LIU, Wei LU
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Publication number: 20230147541Abstract: In a method for adapting a mobile network, a terminal is connected to a first access node of the mobile network via a first connection and to a second access node via a second connection. The first access node controls a data transmission for the terminal and the second access node assists in the data transmission for the terminal. The method comprises determining whether a quality of at least one of the first connection and the second connection is degraded, acquiring quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting the mobile network based on the step of acquiring.Type: ApplicationFiled: December 28, 2022Publication date: May 11, 2023Inventors: Torsten Dudda, Walter Müller, Mattias Bergström, Stefan Wager, Zhiyi Xuan
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Patent number: 11570681Abstract: In a method for adapting a mobile network, a terminal is connected to a first access node of the mobile network via a first connection and to a second access node via a second connection. The first access node controls a data transmission for the terminal and the second access node assists in the data transmission for the terminal. The method comprises determining whether a quality of at least one of the first connection and the second connection is degraded, acquiring quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting the mobile network based on the step of acquiring.Type: GrantFiled: February 8, 2021Date of Patent: January 31, 2023Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Torsten Dudda, Walter Müller, Mattias Bergström, Stefan Wager, Zhiyi Xuan
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Publication number: 20210176691Abstract: In a method for adapting a mobile network, a terminal is connected to a first access node of the mobile network via a first connection and to a second access node via a second connection. The first access node controls a data transmission for the terminal and the second access node assists in the data transmission for the terminal. The method comprises determining whether a quality of at least one of the first connection and the second connection is degraded, acquiring quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting the mobile network based on the step of acquiring.Type: ApplicationFiled: February 8, 2021Publication date: June 10, 2021Inventors: Torsten Dudda, Walter Müller, Mattias Bergström, Stefan Wager, Zhiyi Xuan
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Patent number: 10959151Abstract: In a method for adapting a mobile network, a terminal is connected to a first access node of the mobile network via a first connection and to a second access node via a second connection. The first access node controls a data transmission for the terminal and the second access node assists in the data transmission for the terminal. The method comprises determining whether a quality of at least one of the first connection and the second connection is degraded, acquiring quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting the mobile network based on the step of acquiring.Type: GrantFiled: March 11, 2020Date of Patent: March 23, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Torsten Dudda, Walter Müller, Mattias Bergström, Stefan Wager, Zhiyi Xuan
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Publication number: 20200213924Abstract: In a method for adapting a mobile network, a terminal is connected to a first access node of the mobile network via a first connection and to a second access node via a second connection. The first access node controls a data transmission for the terminal and the second access node assists in the data transmission for the terminal. The method comprises determining whether a quality of at least one of the first connection and the second connection is degraded, acquiring quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting the mobile network based on the step of acquiring.Type: ApplicationFiled: March 11, 2020Publication date: July 2, 2020Inventors: Torsten Dudda, Walter Müller, Mattias Bergström, Stefan Wager, Zhiyi Xuan
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Patent number: 10631222Abstract: Methods, nodes, computer programs, computer program products and a mobile network for adapting a mobile network are described. In such a method for adapting a mobile network (800), a terminal (802) is connected to a first access node (804) of the mobile network (800) via a first connection and to a second access node (808) via a second connection. The first access node (804) controls a data transmission for the terminal (802) and the second access node (808) assists in the data transmission for the terminal (802). The method comprises determining (7) whether a quality of at least one of the first connection and the second connection is degraded, acquiring (7) quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting (896, 8, 898, 899, 10, 11) the mobile network (800) based on the step of acquiring.Type: GrantFiled: January 17, 2014Date of Patent: April 21, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Torsten Dudda, Walter Müller, Mattias Bergström, Stefan Wager, Zhiyi Xuan
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Patent number: 9961607Abstract: According to several disclosed techniques, a wireless network provides assistance information to a mobile terminal for cell selection at re-establishment of a connection after a radio link failure. An example method is implemented in a mobile terminal served in a first cell of a wireless network, and includes receiving (510) a configuration message from the network, the configuration message identifying at least one carrier frequency. Upon subsequently losing connection with the first cell without receiving a handover command, the mobile terminal initiates (520) a cell search using the identified at least one carrier frequency, based on the configuration message.Type: GrantFiled: May 28, 2014Date of Patent: May 1, 2018Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Tao Cui, Walter Müller, Zhiyi Xuan
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Patent number: 9749926Abstract: A method in a primary network node for handling a handover of a wireless device from a primary cell serviced by the primary network node to a neighbor cell serviced by a neighbor network node. The method comprises sending a configuration message to the wireless device, comprising instructions to evaluate in parallel a first handover event and a second handover event. The first event is based on signal quality measurements from both cells. The second event is based on signal strength measurements from both cells. To evaluate comprises determining if an entering condition for each of the events is satisfied. The method further comprises sending a handover command to the wireless device when one of: the entering condition for the first handover event is satisfied over a first time period, and the entering condition for the second handover event is satisfied over a second time period.Type: GrantFiled: March 27, 2013Date of Patent: August 29, 2017Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Walter Müller, Zhiyi Xuan
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Patent number: 9510259Abstract: A method in a first base station (105) for handling a data transferral in a cellular network (100) is provided. The first base station (105) serves a user equipment (125) via a first cell (115). When the first base station (105) obtains an indication that a second cell (120) provides a coverage for the user equipment (125), the first base station (105) sends a message to a second base station (110) serving the second cell (120). The message commands the second base station (110) to prepare for receiving the uplink data from the user equipment (125) via the second cell (120). The first base station (105) also sends a request to the user equipment (125). The request commands the user equipment (125) to prepare for sending the uplink data both via the first cell (115) and via the second cell (120) in respective separate intra frequency transmissions.Type: GrantFiled: November 10, 2011Date of Patent: November 29, 2016Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Walter Müller, Zhiyi Xuan
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Patent number: 9363717Abstract: Embodiments herein relates to a radio network node (12) for controlling a handover process of a user equipment (10) from a first cell (11) to a second cell (14). The user equipment (10) is served in the first cell configured to be controlled by the radio network node. The radio network node comprises an operating circuit configured to operate according to a handover process, which handover process is triggered by a first trigger parameter when a connection to the user equipment is active, and by a second trigger parameter when the connection to the user equipment is inactive.Type: GrantFiled: September 14, 2011Date of Patent: June 7, 2016Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Zhiyi Xuan, Walter Müller
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Publication number: 20160014666Abstract: A method in a primary network node for handling a handover of a wireless device from a primary cell serviced by the primary network node to a neighbour cell serviced by a neighbour network node. The method comprises sending a configuration message to the wireless device, comprising instructions to evaluate in parallel a first handover event and a second handover event. The first event is based on signal quality measurements from both cells. The second event is based on signal strength measurements from both cells. To evaluate comprises determining if an entering condition for each of the events is satisfied. The method further comprises sending a handover command to the wireless device when one of: the entering condition for the first handover event is satisfied over a first time period, and the entering condition for the second handover event is satisfied over a second time period.Type: ApplicationFiled: March 27, 2013Publication date: January 14, 2016Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Walter Müller, Zhiyi Xuan
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Publication number: 20150365872Abstract: Methods, nodes, computer programs, computer program products and a mobile network for adapting a mobile network are described. In such a method for adapting a mobile network (800), a terminal (802) is connected to a first access node (804) of the mobile network (800) via a first connection and to a second access node (808) via a second connection. The first access node (804) controls a data transmission for the terminal (802) and the second access node (808) assists in the data transmission for the terminal (802). The method comprises determining (7) whether a quality of at least one of the first connection and the second connection is degraded, acquiring (7) quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting (896, 8, 898, 899, 10, 11) the mobile network (800) based on the step of acquiring.Type: ApplicationFiled: January 17, 2014Publication date: December 17, 2015Inventors: Torsten Dudda, Walter Müller, Mattias Bergström, Stefan Wager, Zhiyi Xuan
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Publication number: 20150110024Abstract: A low power RBS and a method therein for scheduling downlink transmission to a UE are provided. The low power RBS is associated to at least one macro RBS and the low power RBS is configured to provide radio coverage in a cell of a heterogeneous cellular communication network for scheduling downlink transmissions to a UE connected to the low power RBS. The method comprises receiving (210) a measurement report comprising a channel quality measurement from the UE and adjusting (220) a current SINR value based on the received measurement report for a period of an Almost Bland Subframe, ABS, of the macro RBS. The method further comprises determining (230) downlink transmission parameters based on the adjusted SINR value, and scheduling (240) a downlink transmission to the UE in a subframe of the low power RBS coinciding with an ABS of the macro RBS using the determined downlink transmission parameters.Type: ApplicationFiled: April 11, 2012Publication date: April 23, 2015Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Jawad Manssour, Girum Fantaye, Lars Klockar, Zhiyi Xuan
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Publication number: 20150092686Abstract: According to several disclosed techniques, a wireless network provides assistance information to a mobile terminal for cell selection at re-establishment of a connection after a radio link failure. An example method is implemented in a mobile terminal served in a first cell of a wireless network, and includes receiving (510) a configuration message from the network, the configuration message identifying at least one carrier frequency. Upon subsequently losing connection with the first cell without receiving a handover command, the mobile terminal initiates (520) a cell search using the identified at least one carrier frequency, based on the configuration message.Type: ApplicationFiled: May 28, 2014Publication date: April 2, 2015Inventors: Tao Cui, Walter Müller, Zhiyi Xuan
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Patent number: 8948764Abstract: The present invention relates to methods and devices for mobility management in a cellular communications system. A user equipment maintains (21) at least two sets of mobility trigger parameters. Each set of mobility trigger parameters corresponds to a predetermined user equipment speed range. The user equipment determines (22) a speed range that the speed of the user equipment falls into and selects (23), based on the determined speed range, at least one set of mobility trigger parameters to be used for performing mobility-based decisions. If the user equipment is in connected mode a network base station may select a set of mobility trigger parameters to be used for performing handover decisions based on a determined speed range of the user equipment. Advantages are that ping-pong mobility decisions may be avoided and it is sufficient to determine a range for the UE speed, which is less complicated than determining an accurate speed of the UE particularly in idle mode.Type: GrantFiled: November 27, 2009Date of Patent: February 3, 2015Assignee: Optis Wireless Technology, LLCInventors: Konstantinos Dimou, Muhammad Kazmi, Walter Müller, Zhiyi Xuan
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Publication number: 20140378142Abstract: Embodiments herein relates to a radio network node (12) for controlling a handover process of a user equipment (10) from a first cell (11) to a second cell (14). The user equipment (10) is served in the first cell configured to be controlled by the radio network node. The radio network node comprises an operating circuit configured to operate according to a handover process, which handover process is triggered by a first trigger parameter when a connection to the user equipment is active, and by a second trigger parameter when the connection to the user equipment is inactive.Type: ApplicationFiled: September 14, 2011Publication date: December 25, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Zhiyi Xuan, Walter Müller
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Publication number: 20140256311Abstract: A method in a first base station (105) for handling a data transferral in a cellular network (100) is provided. The first base station (105) serves a user equipment (125) via a first cell (115). When the first base station (105) obtains an indication that a second cell (120) provides a coverage for the user equipment (125), the first base station (105) sends a message to a second base station (110) serving the second cell (120). The message commands the second base station (110) to prepare for receiving the uplink data from the user equipment (125) via the second cell (120). The first base station (105) also sends a request to the user equipment (125). The request commands the user equipment (125) to prepare for sending the uplink data both via the first cell (115) and via the second cell (120) in respective separate intra frequency transmissions.Type: ApplicationFiled: November 10, 2011Publication date: September 11, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Walter Müller, Zhiyi Xuan
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Publication number: 20140213255Abstract: A method in a wireless device for handling a handover event from a primary cell to a neighbour cell, the primary cell being serviced by a primary network node, the neighbour cell being serviced by a neighbour network node, and the wireless device, the primary network node, the primary cell, the neighbour network node and the neighbour cell being comprised in a wireless communications network. The method comprises: determining if an entering condition for a handover event is satisfied by determining if a first entering precondition and a second entering precondition are fulfilled. The first entering precondition is based on a measurement of signal quality from the primary cell; and the second entering precondition is based on a measurement of signal strength from the neighbour cell, and a measurement of signal strength from the primary cell.Type: ApplicationFiled: January 28, 2013Publication date: July 31, 2014Inventors: Walter Müller, Zhiyi Xuan, Stefan Wager
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Patent number: 8780866Abstract: A controlling node for a cellular communications system, arranged to handle the control of one or more user terminals in a first cell and configurable to receive transmissions from one or more user terminals in the first cell, with a defined periodicity. The controlling node includes a receipt monitor for one or more users in the cell, the receipt monitor being arranged to monitor timely receipt of the one or more of the certain transmissions from the one or more user terminals at the expected time for the defined periodicity, and to initiate handover of a user terminal from the first cell to another cell if the controlling node does not receive one or more of the certain transmissions at the expected time for the defined periodicity from the user terminal.Type: GrantFiled: March 22, 2010Date of Patent: July 15, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Walter Müller, Zhiyi Xuan