Patents by Inventor Rui Fan

Rui Fan 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: 10924957
    Abstract: A wireless device, a network node and a respective method performed thereby for performing measurements for fast setup are provided. The method performed by the wireless device comprises receiving, during a RACH procedure, a “message 4” (Msg 4), which Msg 4 may be a contention resolution, the Msg 4 comprising a trigger for performing a fast measurement. The method also comprises performing a fast measurement on one or more carrier(s) that the wireless device receives. The method may further comprise sending a measurement report to the network node which sent the Msg 4 to the wireless device.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: February 16, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mårten Ericson, Rui Fan, Gunnar Mildh, Osman Nuri Can Yilmaz
  • Patent number: 10912011
    Abstract: Method, base station and user equipment for transceiving system information (SI). A minimum SI message is transmitted, in which the minimum SI message comprises information regarding transmission of at least one additional SI message. The at least one additional SI message is transmitted according to the information in the minimum SI message. The minimum SI message comprises an indicator for indicating the transmission of the at least one additional SI message. The indicator further indicates that the at least one additional SI message are periodically broadcasted.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: February 2, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jinhua Liu, Rui Fan, Pål Frenger
  • Publication number: 20210014897
    Abstract: Embodiments of the present disclosure relate to methods and apparatuses for random access transmission. In example embodiments, a method implemented in a terminal device is provided. According to the method, a first transmission resource set from a plurality of transmission resource sets is selected based on one or more of the following: a beam-forming reciprocity capability of the terminal device, and a geometry of the terminal device in a serving area of a network device. The plurality of transmission resource sets are indicated in information for one or more random access configurations received from the network device and are respectively corresponding to different numbers of random access transmissions. Up to a first number of random access signals are transmitted to the network device in a random access request. The first number is corresponding to the first transmission resource set.
    Type: Application
    Filed: May 3, 2018
    Publication date: January 14, 2021
    Inventors: Jinhua Liu, Rui Fan
  • Publication number: 20200412418
    Abstract: An access node transmits, in a downlink signal having a series of subframes, a beam-formed reference signal in subframes, where the beam-formed reference signals are transmitted in fewer than all of the subframes of the downlink signal. A first subset includes beam-formed reference signals corresponding to a first frequency or first localized range of frequencies, and a second subset includes beam-formed reference signals corresponding to a second frequency or second localized range of frequencies. The second frequency or second localized range of frequencies is spaced apart from and differing from the first frequency or first localized range of frequencies. A user equipment, UE, receives, in the downlink signal, the beam-formed reference signal in each of a plurality of subframes. The UE performs mobility management measurements using at least the first subset of the received beam-formed reference signals and performs RLM using the second subset of the received beam-formed reference signals.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 31, 2020
    Inventors: Icaro L. J. da Silva, Rui Fan, Pradeepa Ramachandra, Claes Tidestav, Umut Ugurlu
  • Patent number: 10880816
    Abstract: A method for requesting system information. The method comprises transmitting a request for at least one system information block group, each of which comprises one or more system information blocks, from a user terminal to a network node. The one or more system information blocks is/are grouped according to a feature of the one or more system information blocks. The method may further comprise receiving one or more system information block groups from the network node. The one or more system information block groups may comprise the at least one system information block group.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: December 29, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rui Fan, Jinhua Liu, Pål Frenger
  • Publication number: 20200383120
    Abstract: A user equipment, UE, performs measurements based on a plurality of RLM sources received in beam-formed downlink signals, where the measurements indicate a quality of a given cell or beam. The plurality of sources comprises two or more of: first reference signals (RSs), second RSs of a different type than the first RSs, and one or more physical channel quality indicators obtained from non-reference-signal data in the beam-formed downlink signals. For each of the plurality of sources used to perform measurements, the UE determines whether a measurement for the respective source indicates an out-of-sync event in response to the measurement being below a first threshold. The UE then performs an RLM action based on determined occurrences of out-of-sync events.
    Type: Application
    Filed: July 31, 2020
    Publication date: December 3, 2020
    Inventors: Icaro L. J. da Silva, Rui Fan, Claes Tidestav, Umut Ugurlu
  • Publication number: 20200383145
    Abstract: A method and an apparatus for random access. The method for random access implemented at a base station may comprise sending a first message for triggering random access to a terminal device, wherein the first message indicates a first UL carrier of two candidate UL carriers for the random access and receiving a random access request from the terminal device. The two candidate UL carriers include a normal uplink carrier and a supplementary uplink carrier.
    Type: Application
    Filed: November 14, 2018
    Publication date: December 3, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rui FAN, Stefan PARKVALL, Janne PEISA
  • Patent number: 10849044
    Abstract: A method of multi-connectivity handling in a communication system is disclosed. The method may be performed in a first network node and comprises: generating a data protocol packet destined to a communication device, and including in the data protocol packet at least one identifier identifying data protocol processing context and the first network node. Methods in a second network node and in a communication device are also disclosed, as are first and second network nodes, communication device, computer programs and computer program products.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: November 24, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Karl Norrman, Rui Fan, Johan Rune, Gunnar Mildh, Rasmus Axén, Qingyu Miao
  • Patent number: 10848230
    Abstract: The present invention generally relates to wireless communication, more particularly, relates to recovery from beam failure in a wireless access network where beamforming technique is used in communication between network elements. According to one aspect of the present invention, there is provided a method for recovery from beam failure in a wireless access network accessed by a user equipment (UE). The method comprises: at the wireless access network, determining whether the beam failure occurs on the basis of presence of a response from the UE during communicating between the wireless access network and the UE via a first beam; and if it is determined that the beam failure occurs, communicating with the UE via an available beam selected from the first beam and one or more second beams.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: November 24, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Qianxi Lu, Rui Fan, Qingyu Miao, Zhang Zhang, Johan Rune
  • Publication number: 20200351035
    Abstract: The present disclosure relates to a method used in a User Equipment (UE) for reporting Hybrid Automatic Repeat Request (HARQ) acknowledgement (ACK)/non-acknowledgement (NACK) for Physical Downlink Shared Channels (PDSCHs) in dynamic time division duplex (TDD) configurations. In the method, a plurality of PDSCHs are received in DownLink (DL) subframes associated with an UpLink (UL) subframe and indicated by a DL reference TDD configuration. The DL subframes are divided into a first subset of DL subframes and a second subset of DL subframes. The first subset of DL subframes is also indicated by an UL reference TDD configuration. A first set of Physical Uplink Control Channel (PUCCH) resource indices are assigned based on resources used in transmission of Physical Downlink Control Channels (PDCCHs) corresponding to the PDSCHs received in the DL subframes of the first subset of DL subframes.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 5, 2020
    Inventors: Shaohua Li, Erik ERIKSSON, Rui FAN, Zhiheng GUO, Jinhua LIU, Xinghua SONG
  • Patent number: 10826592
    Abstract: A method for random access for beam failure recovery. In the method, specific random access configuration for the beam failure recovery is received. In the event of a beam failure, a random access procedure is performed according to the specific random access configuration.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: November 3, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rui Fan, Icaro L. J. Da Silva, Helka-Liina Määttanen
  • Publication number: 20200344019
    Abstract: A method in a user equipment (UE) is disclosed. The method comprises obtaining one or more radio link monitoring configurations, each radio link monitoring configuration associated with at least one bandwidth part. The method comprises determining that the UE is to switch from a source bandwidth part to a target bandwidth part. The method comprises performing radio link monitoring on the target bandwidth part according to an obtained radio link monitoring configuration associated with the target bandwidth part.
    Type: Application
    Filed: November 14, 2018
    Publication date: October 29, 2020
    Inventors: Icaro L. J. DA SILVA, Helka-Liina MÄÄTTANEN, IANA SIOMINA, Muhammad KAZMI, Rui FAN
  • Patent number: 10812155
    Abstract: An access node transmits, in a downlink signal having a series of subframes, a beam-formed reference signal in subframes, where the beam-formed reference signals are transmitted in fewer than all of the subframes of the downlink signal. A first subset includes beam-formed reference signals corresponding to a first frequency or first localized range of frequencies, and a second subset includes beam-formed reference signals corresponding to a second frequency or second localized range of frequencies. The second frequency or second localized range of frequencies is spaced apart from and differing from the first frequency or first localized range of frequencies. A user equipment, UE, receives, in the downlink signal, the beam-formed reference signal in each of a plurality of subframes. The UE performs mobility management measurements using at least the first subset of the received beam-formed reference signals and performs RLM using the second subset of the received beam-formed reference signals.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: October 20, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Icaro L. J. da Silva, Rui Fan, Pradeepa Ramachandra, Claes Tidestav, Umut Ugurlu
  • Publication number: 20200329518
    Abstract: The embodiments disclose a method in a primary access node of a wireless network for an intra-carrier dual connectivity communication, the method comprises the steps of determining a data receiving mode based on one or more mode determination parameters, sending information about the determined data receiving mode to a secondary access node and a wireless device and sending data according to the determined data receiving mode to a wireless device. The embodiments also disclose a method in a wireless device connected to a wireless network for an intra-carrier dual connectivity, and the method comprises the steps of receiving information about a data receiving mode from a primary access node and receiving data according to the data receiving mode. According to one or more aspects of the present disclosure, there are provided corresponding access nodes and wireless device.
    Type: Application
    Filed: July 7, 2016
    Publication date: October 15, 2020
    Inventors: Jinhua Liu, Rui Fan, Shaohua Li
  • Publication number: 20200323022
    Abstract: Embodiments of the disclosure generally relate to determining configuration of a DRX timer. A wireless device determines a relationship between a DRX timer and different scheduling units and determines a time unit of the DRX timer based on the determined relationship. Then, the wireless device calculates a time interval indicated by the DRX timer based on the time unit.
    Type: Application
    Filed: April 27, 2020
    Publication date: October 8, 2020
    Inventors: Rui FAN, Jinhua LIU
  • Publication number: 20200305045
    Abstract: Disclosed is a method performed by a network equipment for controlling handover of a User Equipment (UE) from a source network node to a target network node. The method comprises providing, for the UE and for the target network node, information comprising a representation of a UE-specific sequence, where the UE-specific sequence is to be incorporated in a signal, the signal to be transmitted by the target network node to enable the UE to initiate a radio link establishment procedure with the target network node based on a reception of a signal comprising said UE-specific sequence.
    Type: Application
    Filed: June 8, 2020
    Publication date: September 24, 2020
    Inventors: Rui Fan, Andres Reial, Johan Rune, Claes Tidestav
  • Publication number: 20200305041
    Abstract: Some embodiments herein relate to a method performed by a wireless device (10) for handling communication of the wireless device (10) in a wireless communication network (1), wherein a first radio network node serves the wireless device (10) and the wireless communication network (1) further comprises a second radio network node (13). The wireless device receives a handover command from the first radio network node (12) indicating a handover to a cell served by the second radio network node (13), the handover command comprises a beam indication, such as a threshold, controlling which beam of the cell to select by the wireless device (10). The wireless device (10) further selects a beam of the cell based on at least the beam indication.
    Type: Application
    Filed: May 3, 2018
    Publication date: September 24, 2020
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Rui FAN, Icaro L.J. DA SILVA, Janne PEISA, Pradeepa RAMACHANDRA
  • Patent number: 10785801
    Abstract: Methods, apparatuses and computer program provide for random access in a wireless communication system. A method implemented in a network device comprises receiving, from a terminal device, a signal for initiating an RA procedure of a first RA type, the signal including a preamble portion and an information portion. In response to successfully detecting the preamble portion of the signal, but failure in detection of the information portion of the signal, transmitting to the terminal device a first response indicating a successful detection of only a preamble portion of the signal, or a second response indicating an RA procedure of a second RA type different from the first RA type. The described technique may increase the reliability of a two-step RACH procedure and/or reduce consumption of time-frequency resources.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: September 22, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gen Li, Jinhua Liu, Rui Fan
  • Patent number: 10778399
    Abstract: A method for operating a network node in a millimeter network, mmW network is provided. Operations according to the method include receiving a data packet comprising header information, the header information indicating a source ID, a destination ID, 5 a flow ID and a UE ID; and transmitting, to the preceding network node, an ARQ response message indicating the flow ID and the UE ID and ACK/NACK pertaining to the received data packet. Related devices and methods are also provided.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: September 15, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gunnar Mildh, Rui Fan, Qianxi Lu
  • Publication number: 20200288337
    Abstract: The invention refers to a method in a user equipment, UE, for a measurement gap pattern configuration including receiving a configuration information indicative of a measurement gap pattern configuration, and a bandwidth part, BW, configuration, determining an association between measurement gap patterns and BW parts, receiving a message to change the active BW part to one of the configured BW parts, and changing the measurement gap pattern as a function of the corresponding BW part and the association; the invention further refers to a corresponding method in a network node; to corresponding UE, a corresponding network node, and computer programs.
    Type: Application
    Filed: October 8, 2018
    Publication date: September 10, 2020
    Inventors: Christopher CALLENDER, Icaro L. J. DA SILVA, Rui FAN, Muhammad KAZMI, Helka-Liina MÄÄTTANEN, Iana SIOMINA, Henning WIEMANN