Patents by Inventor Su-Khiong Yong

Su-Khiong Yong 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: 20170126461
    Abstract: A wireless local area network station (STA) changes a receiver operating mode (ROM) and saves power by influencing when a ROM-conforming access point (AP) transmission takes place. The STA evaluates candidate delay regimes after a negotiation exchange with the STA. The STA then instructs the AP of a selected delay regime which the AP is permitted to use when transmitting data according to the changed ROM. The ROM can involve a change in the system bandwidth demodulated by the STA and/or the number of spatial streams demodulated by the STA. The delay regime can allow the AP to transmit with little or no delay based on the changed ROM, or the delay regime may require a fixed time delay before the AP transmits according to the changed ROM.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 4, 2017
    Inventors: Guoqing LI, Christiaan A. HARTMAN, Joonsuk KIM, Su Khiong YONG, Yong LIU
  • Publication number: 20170127344
    Abstract: In some embodiments, one or more wireless stations operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to a mechanism for peer NAN devices to assist one another in receiving communications from an access point common to the peer NAN devices. In some embodiments, a wireless station may establish a communication link with a Wi-Fi access point and establish a peer-to-peer communication link with one or more neighboring wireless stations. In addition, the wireless station may receive transmissions intended for at least one neighboring wireless station of the one or more neighboring wireless stations from the Wi-Fi access point and relay the transmissions to the at least one wireless station on behalf of the Wi-Fi access point.
    Type: Application
    Filed: October 10, 2016
    Publication date: May 4, 2017
    Inventors: Yong Liu, Christiaan A. Hartman, Guoqing Li, Su Khiong Yong
  • Publication number: 20170127369
    Abstract: In some embodiments, one or more wireless stations operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to a mechanism for a wireless station to discover a neighboring peer wireless station, e.g., via peer-to-peer Wi-Fi communications, receive a synchronization beacon(s) from the neighboring peer wireless station, and synchronize timing with the neighboring peer wireless station based at least in part on the synchronization beacon(s). In addition, the wireless station may transmit, e.g., via Wi-Fi peer-to-peer communications, a data beacon to one or more neighboring wireless devices stations, wherein the one or more neighboring wireless stations are configured to synchronize timing with the wireless station based on the data beacon.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 4, 2017
    Inventors: Yong Liu, Christiaan A. Hartman, Guoqing Li, Su Khiong Yong, Lawrie Kurian, Peter N. Heerboth
  • Publication number: 20170127464
    Abstract: In some embodiments, one or more wireless stations operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to a mechanism for peer devices to transmit availability schedules beyond 512 time units while continuing to minimize communication overhead. In some embodiments, a wireless station may discover a peer wireless station and transmit extended availability information. In some embodiments, the extended availability information may indicate one or more of an availability interval duration, a bitmap length, and/or a repeat interval of the availability information. In some embodiments, the extended availability information may indicate a maximum number of receivable spatial streams and/or a channel bandwidth.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 4, 2017
    Inventors: Yong Liu, Christiaan A. Hartman, Guoqing Li, Su Khiong Yong, Lawrie Kurian
  • Publication number: 20170093600
    Abstract: Time, frequency and waveform division multiplex schemes are used to efficiently estimate multiple uplink channels in a Wireless Local Area Network (WLAN). Orthogonal Frequency Division Multiple Access (OFDMA) and multi-user Multiple Input Multiple Output (MU-MIMO) approaches provide efficient uplink data transmission. An Access Point (AP) communicates with multiple Stations (STAs) in the WLAN. In some approaches, two or more STAs are addressed and the two or more STAs respond at the same time. The AP receives a composite signal and separates the responses to estimate the uplink channel from each STA. After the AP learns the uplink channels, the AP triggers data transmission from one or more of the WLAN STAs by sending a synchronizing trigger message. In some embodiments, the STAs respond simultaneously with data transmissions to the AP.
    Type: Application
    Filed: September 28, 2016
    Publication date: March 30, 2017
    Inventors: Guoqing LI, Joonsuk KIM, Yong LIU, Christiaan A. HARTMAN, Su Khiong YONG
  • Publication number: 20170094554
    Abstract: In embodiments, one or more wireless stations operate to configure direct communication with neighboring mobile stations, i.e., direct communication between the mobile stations without utilizing an intermediate access point. Embodiments of the disclosure relate to NAN datapath scheduling and NAN pre-datapath operation setup and scheduling. The NAN datapath embodiments described herein provide a mechanism through which devices can communicate and provide services. In particular, embodiments described herein provide a mechanism for NAN datapaths to support various levels of quality of service (QoS). Aspects of the datapath development include datapath scheduling, including datapath setup and scheduling attributes, as well as pre-datapath operation triggering and scheduling. Scheduling may include determination of a type of datapath, including paging and synchronized datapaths. NAN data cluster base schedules may be scheduled as equal-sets or subsets of datapath schedules.
    Type: Application
    Filed: September 21, 2016
    Publication date: March 30, 2017
    Inventors: Yong Liu, Christiaan A. Hartman, Daniel R. Borges, Guoqing Li, Lawrie Kurian, Nathan A. Kralian, Peter N. Heerboth, Su Khiong Yong
  • Publication number: 20170070418
    Abstract: Disclosed herein are system, method, and computer program product embodiments for selectively decoding a multicast subframe in a multi-user frame for a wireless communications protocol. Embodiments include transmitting a request frame including a multicast group address for a multicast group to an access point (AP). The AP can determine a multicast identifier for the multicast group based on the multicast group address in the request frame. The AP can also transmit a response frame including the determined multicast identifier to a station (STA). The STA can receive a multi-user frame containing a multicast subframe from the AP. The STA can determine whether the multicast subframe is destined for the STA based on the determined multicast identifier and a multicast identifier stored in a preamble of the multi-user frame. The STA can determine whether to decode the multicast subframe based on the determination of whether the multicast subframe is destined for the STA.
    Type: Application
    Filed: September 2, 2016
    Publication date: March 9, 2017
    Applicant: Apple Inc.
    Inventors: Guoqing LI, Yong LIU, Joonsuk KIM, Christiaan A. HARTMAN, Su Khiong YONG, Syed A. MUJTABA, Matthew L. SEMERSKY
  • Patent number: 9572105
    Abstract: Embodiments described herein relate to providing reduced power consumption in wireless communication systems, such as 802.11 WLAN systems. Timing information regarding power save opportunities (PSOPs) may be provided in communication frames, which may inform mobile devices of expected frame exchange periods during which they may transition to a Doze state. Additional PSOP information may be included in beacon frames, which may inform mobile devices of expected multicast periods during which they may transition to a Doze state. This may operate to provide improvements in terms of power consumption.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: February 14, 2017
    Assignee: Apple Inc.
    Inventors: Chiu Ngok E. Wong, Christiaan A. Hartman, Joonsuk Kim, Syed Aon Mujtaba, Yong Liu, Su Khiong Yong
  • Publication number: 20170041798
    Abstract: Disclosed herein are system, method, and computer program product embodiments for enabling a spatial reuse opportunity at a high efficiency (HE) station and a network allocation vector (NAV) reset capability at a legacy station using a Request to Send and/or Clear to Send (RTS and/or CTS) frame. For example, the method can include receiving a RTS frame with a redefined field that specifies spatial reuse information. The NAV can be set based on the RTS frame. The method can determine whether a second frame was received within a threshold time after a Short Interframe Space (SIFS). Finally, the method can reset the NAV based on whether the second frame was received within the threshold time.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 9, 2017
    Applicant: Apple Inc.
    Inventors: Guoqing LI, Yong LIU, Joonsuk KIM, Christiaan A. HARTMAN, Chiu Ngok E. WONG, Syed Aon MUJTABA, Matt SEMERSKY, Su Khiong YONG
  • Publication number: 20170012756
    Abstract: Disclosed herein are system, method, and computer program product embodiments for performing multiuser block acknowledgement in a wireless communication protocol. Embodiments include receiving a control frame from an access point (AP). A transmission mode can be determined based on a trigger information field in the control frame. Further, a data frame to acknowledge can be determined based on a block acknowledgement request (BAR) field in the control frame. A block acknowledgment (BA) frame can be generated based on the data frame to acknowledge. The BA frame can then be transmitted to the AP based on the transmission mode, e.g., at the same time another BA frame is transmitted to the AP by another station.
    Type: Application
    Filed: July 6, 2016
    Publication date: January 12, 2017
    Applicant: Apple Inc.
    Inventors: Guoqing LI, Yong Liu, Joonsuk Kim, Chiu Ngok E. Wong, Christiaan A. Hartman, Su Khiong Yong, Syed A. Mujtaba
  • Publication number: 20160353233
    Abstract: In some embodiments, one or more wireless stations operate according to Neighbor Awareness Networking (NAN)—direct communication with neighboring wireless stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to triggering a NAN datapath using Bluetooth low energy (BLE) signaling. The NAN datapath embodiments described herein provide a mechanism through which devices can communicate to establish a Wi-Fi connection via non-Wi-Fi signaling and provide services. Aspects of the datapath development include Wi-Fi connection establishment and datapath initiation. The datapath model may be implemented for unicast and/or multicast communication between wireless stations, including mobile stations.
    Type: Application
    Filed: May 27, 2016
    Publication date: December 1, 2016
    Inventors: Su Khiong Yong, Yong Liu, Christiaan A. Hartman, Siegfried Lehmann, Guoqing Li, Chiu Ngok E. Wong
  • Publication number: 20160353470
    Abstract: In some embodiments, one or more wireless stations operate according to Neighbor Awareness Networking (NAN)—direct communication with neighboring wireless stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to NAN datapath scheduling and NAN pre-datapath operation setup and scheduling. The NAN datapath embodiments described herein provide a mechanism through which devices can communicate and provide services. Aspects of the datapath development include datapath scheduling, including datapath setup and scheduling attributes, as well as pre-datapath operation triggering and scheduling. Scheduling attributes may include a native scheduler rank and a NAN data cluster scheduler rank. NAN data cluster base schedules may be scheduled as equal-sets or subsets of datapath schedules. The datapath model may be implemented for unicast and multicast communication between wireless stations, including mobile stations.
    Type: Application
    Filed: May 25, 2016
    Publication date: December 1, 2016
    Inventors: Yong Liu, Christiaan A. Hartman, Daniel R. Borges, Peter N. Heerboth, Lawrie Kurian, Su Khiong Yong, Anand Rajagopalan, Saravanan Balasubramaniyan, Tashbeeb Haque, Andreas Wolf, Guoqing Li, Lilach Zukerman, Oren Shani
  • Publication number: 20160330742
    Abstract: Managing orthogonal frequency division multiple access (OFDMA) uplink acknowledgements is described herein. An example system can include an interface circuit to generate a physical layer convergence protocol data unit (PPDU) including a physical layer preamble, a first sub-channel field corresponding to a first station, and a second sub-channel field corresponding to a second station. The first sub-channel field can carry a first unicast trigger corresponding to the first station, and the second sub-channel field can carry a second unicast trigger corresponding to the second station. The interface circuit can also transmit the PPDU to the first and second stations.
    Type: Application
    Filed: May 5, 2016
    Publication date: November 10, 2016
    Applicant: Apple Inc.
    Inventors: Guoqing LI, Joonsuk KIM, Christiaan A. HARTMAN, Yong LIU, Chiu Ngok E. WONG, Syed Aon MUJTABA, Su Khiong YONG
  • Publication number: 20160315782
    Abstract: A method for receiving feedback on a quality of multicast transmissions in a Wireless Local Access Network (WLAN) including a source electronic device (e.g., an access point) and a plurality of electronic devices is disclosed, according to some embodiments. The method can include (i) transmitting a plurality of multicast packets addressed to a subset of the plurality of electronic devices by the source electronic device; (ii) concurrently polling the subset of the plurality of electronic devices by the source electronic device; and (iii) receiving a plurality of block acknowledgements (BAs) from at least the subset of the plurality of electronic devices by the source electronic device. Each BA may include information on a quality of reception of two or more multicast packets received at an electronic device.
    Type: Application
    Filed: April 25, 2016
    Publication date: October 27, 2016
    Applicant: Apple Inc.
    Inventors: Guoqing Li, Joonsuk KIM, Chiu Ngok E. WONG, Yong LIU, Su Khiong YONG, Christiaan A. Hartman, Syed Aon MUJTABA, Ye SUN, Shu DU, Wen ZHAO
  • Publication number: 20160316470
    Abstract: In embodiments, a wireless device, such as a Wi-Fi device, transmits communication signals on secondary channels within an operational bandwidth of a wireless network, concurrent with a transmission from another wireless device on a primary channel. The wireless device may detect that a first frequency band within an operating bandwidth of a wireless network is occupied by a first transmission transmitted by a second wireless device, and determine that a second, different frequency band within the operating bandwidth of the wireless network is not occupied. In response, the wireless device may transmit a second transmission occupying the second frequency band concurrent with the first transmission. The wireless device may set a duration of the second transmission based at least in part on a determination of whether the second wireless device is configured to assess the state of all frequency bands within the operating bandwidth before beginning a subsequent transmission.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 27, 2016
    Inventors: Chiu Ngok E. Wong, Joonsuk Kim, Christiaan A. Hartman, Guoqing Li, Su Khiong Yong, Yong Liu
  • Publication number: 20160309357
    Abstract: In some embodiments, a first wireless device initializes a first threshold and sends a first frame transmission to a second wireless device. When the first wireless device determines that the first frame transmission was successful, it adjusts the first threshold to a second threshold that is greater than the first threshold. Additionally, when the first wireless device determines that the first frame transmission was not successful, the first wireless device adjusts the first threshold to a third threshold that is less than the first threshold. The thresholds can be associated with any measure, including carrier sensitivity and/or energy detection.
    Type: Application
    Filed: March 28, 2016
    Publication date: October 20, 2016
    Inventors: Chiu Ngok E. Wong, Christiaan A. Hartman, Guoqing Li, Joonsuk Kim, Su Khiong Yong, Yong Liu
  • Publication number: 20160309508
    Abstract: Embodiments include a method, computer program product, and system for grouping electronic devices into contention groups to reduce uplink Orthogonal Frequency-Division Multiple Access (OFDMA) random access (OFDMA-RA) collisions. An access point may explicitly assign an electronic device to a contention group, or the electronic device may implicitly determine an assignment to the contention group. To explicitly assign a device to a contention group, the access point may randomly assign or assign based on a criteria of the electronic device. Examples of criteria include an association identifier (AID), a traffic type/quality of service (QoS) category, a power saving preference, and an association status. The electronic device may implicitly determine a contention group assignment based on the total number of contention groups.
    Type: Application
    Filed: April 14, 2016
    Publication date: October 20, 2016
    Applicant: Apple Inc.
    Inventors: Guoqing LI, Joonsuk Kim, Christiaan A. Hartman, Syed Aon Mujtaba, Chiu Ngok E. Wong, Yong Liu, Su Khiong Yong
  • Publication number: 20160309472
    Abstract: In some embodiments, one or more wireless stations operate to configure Neighbor Awareness Networking (NAN)—direct communication with neighboring wireless stations, e.g., without utilizing an intermediate access point. Embodiments relate to scheduling of NAN ranging procedures, including to a first wireless station sending first information, including first scheduling preferences and a first ranging role, to a second wireless station. The first wireless device receives second information, including second scheduling preferences and a second ranging role, from the second wireless device. The first wireless station may initiate the ranging procedure based on the scheduling preferences and ranging parameters. Alternatively, the second wireless station and may initiate the ranging procedure based on the scheduling preferences and ranging parameters.
    Type: Application
    Filed: April 18, 2016
    Publication date: October 20, 2016
    Inventors: Su Khiong Yong, Christiaan A. Hartman, Yong Liu, Lawrie Kurian, Peter N. Heerboth, Guoqing Li, Daniel R. Borges, Chiu Ngok E. Wong, Saravanan Balasubramaniyan, Tashbeeb Haque, Anand Rajagopalan
  • Publication number: 20160295413
    Abstract: The disclosed embodiments provide a system that provides wireless service groups. During operation, a wireless device's advertising mechanism advertises a service group over Wi-Fi, wherein the service group comprises at least the wireless device and wherein the service group's security requirements regulate multicast protection within the service group. In response to receiving a request from a second device to be admitted into the service group, the wireless device's security mechanism admits the second device into the service group and sends the service group's security requirements to the second device, thereby enabling the second device to initialize multicast protection in accordance with the service group's security requirements.
    Type: Application
    Filed: November 20, 2015
    Publication date: October 6, 2016
    Applicant: APPLE INC.
    Inventors: Yong Liu, Christiaan A. Hartman, Guoqing Li, Chiu Ngok E. Wong, Su Khiong Yong
  • Publication number: 20160278112
    Abstract: In some embodiments, one or more wireless stations operate to configure Neighbor Awareness Networking (NAN)—direct communication between neighboring wireless stations, e.g., without utilizing an intermediate access point. Embodiments of the disclosure relate to NAN datapath configuration. The NAN datapath embodiments described herein provide a mechanism through which devices can communicate and provide services. Aspects of the datapath development include datapath scheduling, including datapath setup and scheduling attributes, scheduler rank management, and further NAN discovery. The datapath model may be implemented for unicast and multicast communication between wireless stations.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 22, 2016
    Inventors: Yong Liu, Christiaan A. Hartman, Daniel R. Borges, Peter Heerboth, Lawrie Kurian, Su Khiong Yong, Anand Rajagopalan, Saravanan Balasubramaniyan, Tashbeeb Haque, Andreas Wolf, Guoqing Li, Lilach Zukerman, Oren Shani