Patents by Inventor Dexu Lin

Dexu Lin 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).

  • Publication number: 20150270925
    Abstract: A modulation and coding scheme (MCS) is selected for one or more transmissions from a first wireless device to a second wireless device, based at least in part on interference at the second wireless device during a time period. The interference excludes wireless signals present at the second wireless device at first times during the time period when the first wireless device is transmitting and at second times during the time period when the first wireless device detects transmissions.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 24, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Dexu Lin, Jelena Damnjanovic, Anastasios Stamoulis, Yongbin Wei, Kiran K. Somasundaram, Shi Cong Yang
  • Patent number: 9125133
    Abstract: Systems and methodologies are described herein that facilitate techniques for design of relay backhaul to support mobility of relay nodes in a wireless communication system. According to various aspects herein, techniques are provided to enable and support the use of mobile relays and to facilitate handover of mobile relays between respective donor cells. More particularly, techniques are provided herein for relay backhaul control channel assignment associated with hand in or hand out of mobile relays, access/backhaul resource partitioning for mobile relays, and management of quality of service (QoS) requirements associated with a relay handover.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: September 1, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, Wanshi Chen, Dexu Lin
  • Patent number: 9083517
    Abstract: The described aspects include methods and apparatus for aggregating carriers over a backhaul link between a relay and an evolved Node B (eNB). A first set of subframes of at least a first carrier of a plurality of carriers configured for communicating with an eNB over a backhaul link can be determined. A second set of subframes of at least a second carrier of the plurality of carriers configured for backhaul link communications is also determined, wherein the second set of subframes are different from the first set of subframes. Data received over a plurality of access link carriers can then be communicated to the eNB over the first carrier and the second carrier based at least on the first set of subframes and the second set of subframes.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: July 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Dexu Lin, Jelena M. Damnjanovic, Juan Montojo
  • Patent number: 9078270
    Abstract: Systems and methodologies are described that facilitate providing opportunistic relay node communication based on scheduling of other communications in a wireless network. In particular, a relay node can maintain a backhaul link with an access point and an access link with a mobile device to facilitate communicating information therebetween. Time slots during which the backhaul link is active can be determined and avoided during scheduling access link communications with the mobile device. Furthermore, resource assignments from the access point to the mobile device can be monitored and decoded such that time slots associated therewith can also be determined and avoided. Thus, the relay node can communicate with mobile devices in time slots where the backhaul link is inactive and/or the mobile devices are not occupied communicating directly with the access point.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: July 7, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, Kambiz Azarian Yazdi, Dexu Lin, Anastasios Stamoulis, Arnab Chakrabarti
  • Patent number: 9009573
    Abstract: Methods, apparatuses, and computer program products are disclosed for encoding/decoding a wireless control signal. For encoding, control bits are received and encoded with a first error control code so as to create a first set of encoded bits. The encoded bits are then encoded with a second error control code so as to create a second set of encoded bits, which are modulated as beacon tones and subsequently transmitted. For decoding, beacon tones corresponding to a set of control bits are received and subsequently demodulated so as to ascertain a set of demodulated bits. The demodulated bits are then decoded with a decoder so as to ascertain a set of decoded bits. The decoded bits are then decoded with a second decoder so as to ascertain a second set of decoded bits, which includes the set of control bits.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: April 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Naga Bhushan, Dexu Lin, Aamod D. Khandekar
  • Patent number: 8976662
    Abstract: A method, an apparatus, and a computer program product for associating a user equipment (UE) with a relay in a wireless network are provided. The apparatus determines a relay backhaul link quality of a relay; determines a path loss from a UE to the relay; and compares the relay backhaul link quality to a direct link quality between the UE and a base station, and the path loss to a path loss threshold to determine whether to associate the UE with the relay.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: March 10, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Kiran K. Somasundaram, Siddhartha Mallik, Anastasios Stamoulis, Aleksandar Damnjanovic, Naga Bhushan, Dexu Lin
  • Patent number: 8953507
    Abstract: For range expansion, a determination to enter range expansion may be made based on a signal strength differential for user equipment (UE) communications between a first class of base stations and a second class of base stations. If the signal strength differential is beyond a certain threshold, range expansion may be implemented. In range expansion, a signal is transmitted, on a resource coordinated with at least one of the first class of base stations, from one of the second class of base stations to the UE which could experience dominant interference from one of the first class of base stations if coordination were not performed. Transmission power may be reduced from one of the first class of base stations on that resource. The second signal may be transmitted within the region of the Physical Downlink Shared Channel.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: February 10, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Dexu Lin, Ravi Palanki, Wanshi Chen, Aleksandar Damnjanovic, Tingfang Ji, Aamod Dinkar Khandekar
  • Patent number: 8942272
    Abstract: Systems and methodologies are described that enable serving cell selection in a wireless network with a multiple antenna repeater operable to support MIMO communications. In one example, a repeater using orthogonal frequency division multiplexing on the downlink can be equipped to receive, by one or more receive antennas, one or more signals using one or more radio frequency (RF) isolation schemes. The repeater can further be equipped to amplify and delay the one or more signals using one or more combination schemes. Moreover, the repeater can be equipped to transmit, by one or more transmit antennas, the amplified and delayed one or more signals, wherein at least one of the one or more receive antennas or the one or more transmit antennas includes two or more antennas.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: January 27, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Dexu Lin, Kapil Bhattad, Dhananjay Ashok Gore
  • Patent number: 8903321
    Abstract: Various systems and methods for network management are disclosed. In one embodiment, a network management system comprises a receiver for receiving data from a plurality of entities, including base stations and/or subscriber handsets, a processor for generating a network map or a recommendation based on the received data, a display device for displaying the network map or recommendation, and a transmitter for transmitting instructions based on the recommendation.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: December 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Anastasios Stamoulis, Arnab Chakrabarti, Dexu Lin, Kambiz Azarian Yazdi, Tingfang Ji
  • Patent number: 8880111
    Abstract: Various systems and methods for network management are disclosed. In one embodiment, a network management system comprises a receiver for receiving data from a plurality of entities, including base stations and/or subscriber handsets, a processor for generating a network map or a recommendation based on the received data, a display device for displaying the network map or recommendation, and a transmitter for transmitting instructions based on the recommendation.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: November 4, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Anastasios Stamoulis, Arnab Chakrabarti, Dexu Lin, Kambiz Azarian Yazdi, Tingfang Ji
  • Patent number: 8838122
    Abstract: Various systems and methods for network management are disclosed. In one embodiment, a network management system comprises a receiver for receiving data from a plurality of entities, including base stations and/or subscriber handsets, a processor for generating a network map or a recommendation based on the received data, a display device for displaying the network map or recommendation, and a transmitter for transmitting instructions based on the recommendation.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: September 16, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Anastasios Stamoulis, Arnab Chakrabarti, Dexu Lin, Kambiz Azarian Yazdi, Tingfang Ji
  • Patent number: 8798665
    Abstract: Systems and methodologies are described that facilitate transmitting control information in wireless networks. Portions of bandwidth can be blanked for transmitting control information, and the control information transmitters can utilize beacon symbols to convey the control information. In this regard, interference is mitigated with respect to data transmissions over the control information bandwidth. Selected frequencies of the beacon symbols in a codeword can be used to indicate the control information. The codewords can be encoded with an error control code to provide redundancy for decoding in the presence of some interference.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: August 5, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Avneesh Agrawal, Alexei Gorokhov, Aamod Khandekar, Ashwin Sampath, Dexu Lin
  • Patent number: 8798526
    Abstract: Techniques for selecting and processing signals from different stations in a wireless network are described. A destination station may receive a direct signal from a source station and at least one relay signal from at least one relay station. The destination station may determine metrics for the source and relay stations, e.g., based on pilots received from these stations. The destination station may select at least one signal to process from among the direct and relay signals based on the metrics for the source and relay stations. The destination station may select the direct signal if the metric for the source station exceeds a threshold. The destination station may select the relay signal from each relay station having a metric exceeding at least one threshold. The destination station may process the at least one selected signal to recover a transmission sent by the source station to the destination station.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: August 5, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, Arnab Chakrabarti, Anastasios Stamoulis, Dexu Lin, Kambiz Azarian Yazdi
  • Patent number: 8774119
    Abstract: Providing for fair resource sharing among wireless nodes in a wireless communication environment is described herein. By way of example, fairness can comprise establishing a set of resource sharing credits for wireless nodes. By expending credits, a node can borrow a resource of another node, to enable or enhance operation of the borrowing node. Credits for the borrowing node are decreased based on consumption of a shared resource, or credits for the lending node are increased based on such consumption, or both. Once an amount of credits expires, a node can be restricted from borrowing further resources until enough resources are lent to build up a suitable amount of credits. Accordingly, fairness can comprise correlating shared resource consumption with shared resource provisioning, to encourage participation in cooperative wireless communications.
    Type: Grant
    Filed: August 11, 2012
    Date of Patent: July 8, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Arnab Chakrabarti, Anastasios Stamoulis, Dexu Lin, Kambiz Azarian Yazdi, Tingfang Ji
  • Patent number: 8767684
    Abstract: Aspects are disclosed for operating a relay via an MBSFN-based backhaul link. Control resources are allocated, which include a first set of control resources and a second set of control resources. For some embodiments, a portion of the first set of control resources is concatenated with a portion of the second set of control resources to form a concatenation of resources whereas, in other embodiments, an indication scheme is implemented to provide an indication of a first or second allocation size respectively associated with the first and second set of control resources. At least one control signal is then transmitted which includes at least one of the concatenation or the indication. Other disclosed embodiments are directed towards configuring a user equipment to decode a control signal generated according to the aspects disclosed herein.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: July 1, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Dexu Lin, Tingfang Ji
  • Patent number: 8761032
    Abstract: Systems and methodologies are described that facilitate wireless network transmitters blanking or reducing power on portions of bandwidth reserved for control information transmission. This mitigates interference from disparate transmitters. Furthermore, the control information portion can be divided into a plurality of OFDM tiles that are reusable by transmitters for transmitting the control information. In this regard, interference between transmitters is additionally mitigated as the transmitters can multiplex the control information over a plurality of tiles increasing the chance that at least a portion of the tiles are not interfered. The control information can be decoded by the receivers from the portion of tiles with a low probability of interference.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: June 24, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Dexu Lin, Alexei Gorokhov, Aamod Khandekar, Ravi Palanki
  • Publication number: 20140169197
    Abstract: A selection process is disclosed for a user equipment (UE) to select between a WAN and a WLAN. Instead of defaulting to select one or the other networks, as long as the connection is available, a better load balancing and maximization of the system capacity may be achieved when the UE selects the network according to a priority order between the WAN/WLAN. The priority order takes into account various network metrics, such as loading, channel conditions, bandwidth, and service requirements.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 19, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Jelena Damnjanovic, Yongbin Wei, Dexu Lin
  • Patent number: 8705419
    Abstract: Techniques for supporting relay communication with subframe staggering are described. For subframe staggering, subframes of different relays are staggered from one another, which can increase the number of potential backhaul subframes. In one design, a first relay determines its access subframes and backhaul subframes, which correspond to different non-overlapping subsets of the subframes of the first relay. The first relay communicates with at least one UE during the access subframes and communicates with a base station during the backhaul subframes. The subframes of the first relay are offset from the subframes of a second relay communicating with the base station. In one design, the access subframes of the first relay includes all subframes with either even or odd indices, which can support data transmission with HARQ. In one design, at least one access subframe corresponds to at least one reserved subframe having reduced transmit power from the base station.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: April 22, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Aamod Dinkar Khandekar, Tingfang Ji, Dexu Lin, Wanshi Chen
  • Patent number: 8611333
    Abstract: A system and method of managing adjustment of synchronization timing for handover of a mobile relay is disclosed. The method includes repositioning coverage of the mobile relay from a first network access point to a second network access point and adjusting a synchronization timing of the mobile relay in an asynchronous network of the wireless communication system.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: December 17, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, Dexu Lin, Wanshi Chen, Rajat Prakash, Aamod Dinkar Khandekar
  • Patent number: 8547910
    Abstract: Providing for fair resource sharing among wireless nodes in a wireless communication environment is described herein. By way of example, fairness can comprise establishing a set of resource sharing credits for wireless nodes. By expending credits, a node can borrow a resource of another node, to enable or enhance operation of the borrowing node. Credits for the borrowing node are decreased based on consumption of a shared resource, or credits for the lending node are increased based on such consumption, or both. Once an amount of credits expires, a node can be restricted from borrowing further resources until enough resources are lent to build up a suitable amount of credits. Accordingly, fairness can comprise correlating shared resource consumption with shared resource provisioning, to encourage participation in cooperative wireless communications.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: October 1, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Arnab Chakrabarti, Anastasios Stamoulis, Dexu Lin, Kambiz Azarian Yazdi, Tingfang Ji