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: 20190239250
    Abstract: Some embodiments are directed to 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. The electronic device may use the explicitly or implicitly assigned contention group number to determine whether the electronic device may contend for a given trigger frame random access (TF-R) frame.
    Type: Application
    Filed: April 12, 2019
    Publication date: August 1, 2019
    Applicant: Apple Inc.
    Inventors: Guoqing LI, Joonsuk Kim, Christiaan A. Hartman, Syed Aon Mujtaba, Chiu Ngok E. Wong, Yong Liu, Su Khiong Yong
  • Patent number: 10356819
    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: Grant
    Filed: August 5, 2016
    Date of Patent: July 16, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Yong Liu, Joonsuk Kim, Christiaan A. Hartman, Chiu Ngok E. Wong, Syed Aon Mujtaba, Matt Semersky, Su Khiong Yong
  • Patent number: 10342013
    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: Grant
    Filed: April 18, 2016
    Date of Patent: July 2, 2019
    Assignee: Apple Inc.
    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
  • Patent number: 10341065
    Abstract: During operation, an interface circuit in an electronic device may receive, from a second electronic device (such as an access point in a WLAN), an uplink trigger frame that may specify an access category. In response to the uplink trigger frame, the electronic device may first include data associated with the specified access category in one or more frames, and then may transmit the one or more frames to the second electronic device. Moreover, when all the data associated with the specified access category has been transmitted or when there is no data associated with the specified access category, and when there is leftover time in an allocation associated with the uplink trigger frame, the interface circuit may transmit the one or more frames to the second electronic device with additional data associated with another access category that is different from the specified access category.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: July 2, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Yong Liu, Christiaan A. Hartman, Ashok Ranganath, Oren Shani, Su Khiong Yong, Jarkko L. Kneckt, Joonsuk Kim
  • Publication number: 20190200295
    Abstract: An interface circuit in an electronic device (such as an access point) may receive a setup request associated with the recipient electronic device. The setup request may specify a group address for which the recipient electronic device wants to receive associated frames and a proposed transmission interval. Based at least in part on the proposed transmission interval, the electronic device may determine a transmission schedule and/or may assign, based at least in part on the group address, the recipient electronic device to an aggregated group having a flexible multicast service identifier (FMSID). Then, the electronic device may provide a wake-up frame for the recipient electronic device, where the wake-up frame includes an identifier of the aggregated group for which a group-addressed frame will subsequently be transmitted by the electronic device. Moreover, the wake-up frame may be provided at a transmission time based at least in part on the transmission schedule.
    Type: Application
    Filed: August 27, 2018
    Publication date: June 27, 2019
    Inventors: Christiaan A. Hartman, Guoqing Li, Yong Liu, Su Khiong Yong, Jarkko L. Kneckt
  • Patent number: 10321423
    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: Grant
    Filed: October 27, 2016
    Date of Patent: June 11, 2019
    Assignee: Apple Inc.
    Inventors: Yong Liu, Christiaan A. Hartman, Guoqing Li, Su Khiong Yong, Lawrie Kurian, Peter N. Heerboth
  • Patent number: 10313226
    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: Grant
    Filed: September 2, 2016
    Date of Patent: June 4, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Yong Liu, Joonsuk Kim, Christiaan A. Hartman, Su Khiong Yong, Syed A. Mujtaba, Matthew L. Semersky
  • Patent number: 10306640
    Abstract: A basic bandwidth wireless local area network (WLAN) device or station (STA) is assigned to a secondary channel. The basic bandwidth STA may be a 20 MHz STA. On the secondary channel, the basic bandwidth STA operates in a wideband mode recovering received data transmitted from an access point (AP) as part of a high bandwidth physical layer protocol data unit (PPDU). The STA and the AP can be members of a basic service set (BSS). The high bandwidth PPDU may be, for example, a 40 MHz, 60 MHz, or 80 MHz PPDU. Once on the secondary channel, the STA relies on the AP to perform channel sensing and scheduling activities, thus reducing power consumption at the STA and increasing the efficiency of the BSS. Several signaling formats are provided for indicating the secondary channel that the STA is assigned to or requests to move to.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: May 28, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Jarkko L. Kneckt, Christiaan A. Hartman, Yong Liu, Su Khiong Yong
  • Patent number: 10306476
    Abstract: An interface circuit in an electronic device may receive, from an access point associated with the electronic device, a frame with management information that enables the electronic device to use a spatial-reuse technique, where the electronic device, through the spatial-reuse technique, adjusts a transmit power and a channel-availability sensing threshold. Moreover, the management information may specify parameters for the spatial-reuse technique. Then, the electronic device may transmit, using the spatial-reuse technique, one or more frames to the access point based on the parameters. Furthermore, the electronic device may transmit, to the access point, feedback information that indicates communication performance during the communication between the electronic device and the access point. For example, the feedback information may include a retry rate and, more generally, communication-performance information. This feedback information may be used by the access point to modify the parameters.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: May 28, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Christiaan A. Hartman, Jarkko Kneckt, Yong Liu, Su Khiong Yong, Joonsuk Kim, Oren Shani
  • Publication number: 20190150062
    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 device to trigger, via a first interface, service discovery over a second interface. In some embodiments, the service discovery can involve the exchange of one or more Bloom filters.
    Type: Application
    Filed: November 14, 2018
    Publication date: May 16, 2019
    Inventors: Bob Bradley, Su Khiong Yong, Yong Liu
  • Patent number: 10285040
    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 accelerated service discovery between peer devices. In some embodiments, a wireless device may broadcast a probe beacon on one or more discovery channels. The wireless device may then scan the discovery channels for an extended period of time. The wireless device may receive a response from a peer device and transmit further service information to the peer device in an availability window indicated in the response.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: May 7, 2019
    Assignee: Apple Inc.
    Inventors: Yong Liu, Christiaan A. Hartman, Guoqing Li, Lawrie Kurian, Peter N. Heerboth, Su Khiong Yong
  • Patent number: 10285200
    Abstract: An access point selects a channel access policy for an electronic device in a wireless local area network (WLAN). During operation, an interface circuit of the access point receives a channel access preference from the electronic device. The channel access preference includes: a multi-user trigger-based channel access technique, a single-user contention-based channel access technique, or both. The interface circuit selects the channel access policy for the electronic device based, at least in part, on the received channel access preference. The channel access policy can also be selected based at least in part on a communication performance metric associated with communication in the WLAN. The interface circuit communicates the selected channel access policy to the electronic device, which subsequently accesses a communication channel and communicates packets with the access point in accordance with the channel access policy.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: May 7, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Christiaan A. Hartman, Ashok Ranganath, Joonsuk Kim, Matthew L. Semersky, Oren Shani, Su Khiong Yong, Yong Liu
  • Patent number: 10277424
    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: Grant
    Filed: September 28, 2016
    Date of Patent: April 30, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Joonsuk Kim, Yong Liu, Christiaan A. Hartman, Su Khiong Yong
  • Patent number: 10271180
    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 device to perform multicast communications amongst a group of peer devices. Embodiments described herein provide mechanisms for initiation (or establishment) and scheduling of a multicast group as well as enrollment of a device into a multicast group, merging of multicast groups, and termination of multicast groups.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: April 23, 2019
    Assignee: Apple Inc.
    Inventors: Yong Liu, Su Khiong Yong, Christiaan A. Hartman, Lawrie Kurian, Peter N. Heerboth, Guoqing Li
  • Patent number: 10264602
    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: Grant
    Filed: April 14, 2016
    Date of Patent: April 16, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Joonsuk Kim, Christiaan A. Hartman, Syed Aon Mujtaba, Chiu Ngok E. Wong, Yong Liu, Su Khiong Yong
  • Publication number: 20190097952
    Abstract: A wireless device can perform Out-of-Order packet processing and block acknowledgement. Multiple packets may be received at a lower layer of the wireless device. Identifying information may be determined for the received packets. It may be determined that the packets were received out of sequential order, based at least in part on the identifying information. Despite being received out of sequential order, payload information from the packets may be provided to a higher layer of the wireless device in a non-sequential order, such as the order of receipt.
    Type: Application
    Filed: May 16, 2018
    Publication date: March 28, 2019
    Inventors: Su Khiong Yong, Yigal Eliaspur, Yong Liu, Koby Vainapel
  • Patent number: 10237870
    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: Grant
    Filed: May 5, 2016
    Date of Patent: March 19, 2019
    Assignee: Apple Inc.
    Inventors: Guoqing Li, Joonsuk Kim, Christiaan A. Hartman, Yong Liu, Chiu Ngok E. Wong, Syed Aon Mujtaba, Su Khiong Yong
  • Publication number: 20190075609
    Abstract: One or more wireless stations may operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. A mechanism for a wireless station to transmit a paging beacon outside of a paging window may include establishing a paged data link with a peer station, determining that one or more data frames associated with the paged data link are pending transmission, and transmitting a beacon to the peer station outside of a scheduled paging window of the paged data link. The beacon may include a paging attribute indicating there are pending data frames.
    Type: Application
    Filed: August 23, 2018
    Publication date: March 7, 2019
    Inventors: Yong Liu, Christiaan A. Hartman, Guoqing Li, Lawrie Kurian, Peter N. Heerboth, Su Khiong Yong
  • Publication number: 20190075521
    Abstract: An interface circuit in an electronic device (such as an access point) may receive a wake-up-radio (WUR)-setup request associated with a recipient electronic device, where the WUR-setup request specifies one or more proposed data criteria or wake-up criteria that indicate when a wake-up frame is to be transmitted to the recipient electronic device. In response, the electronic device may determine one or more data criteria (or wake-up criteria) for use based at least in part on the one or more proposed data criteria. Then, the interface circuit may provide a WUR-setup response intended for the recipient electronic device, where the WUR-setup response indicates acceptance of the one or more proposed data criteria for use as the one or more data criteria or a proposed modification of at least one of the one or more proposed data criteria.
    Type: Application
    Filed: August 27, 2018
    Publication date: March 7, 2019
    Inventors: Jarkko L. Kneckt, Yong Liu, Su Khiong Yong, Christiaan A. Hartman, Guoqing Li
  • Patent number: 10219224
    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: July 6, 2018
    Date of Patent: February 26, 2019
    Assignee: Apple Inc.
    Inventors: Chiu Ngok E. Wong, Christiaan A. Hartman, Joonsuk Kim, Syed Aon Mujtaba, Yong Liu, Su Khiong Yong