Patents by Inventor Yanjun Sun

Yanjun Sun 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: 11863978
    Abstract: This disclosure provides methods, devices and systems that facilitate mobility of wireless communication devices configured for multi-link operation (MLO). Particular aspects more specifically relate to facilitating fast basic service set (BSS) transitions by wireless communication devices that support MLO. For example, some aspects provide support for station (STA) multi-link device (MLD) roaming between access point (AP) MLDs, from an AP MLD to a non-MLO AP, or from a non-MLO AP to an AP MLD. In some aspects, a STA MLD may be configured to use a medium access control (MAC) service access point address (MAC-SAP address) of the AP MLD when re-associating or communicating with a legacy AP or with an AP MLD. In such aspects, the MAC-SAP address may be used by all STAs of the non-AP MLD for fast BSS transitions.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: January 2, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, George Cherian, Abhishek Pramod Patil, Alfred Asterjadhi, Yanjun Sun, Jouni Kalevi Malinen
  • Publication number: 20230422304
    Abstract: In some implementations, a first access point (AP) selects one or more other APs for participation with the first AP in a coordinated access point transmission session. The first AP obtains a transmission opportunity (TXOP), and transmits a frame indicating scheduling information for uplink (UL) or downlink (DL) transmissions to or from the selected APs, the scheduling information indicating a respective start time for the UL or DL transmissions to or from the selected APs, at least two of the start times being offset from one another by a time period associated with decoding a preamble of a wireless packet. The first AP transmits or receives wireless packets to or from one or more associated stations (STAs) at least partially concurrently with the transmission or reception of wireless packets by the selected APs to or from their respective associated STAs based on the scheduling information.
    Type: Application
    Filed: September 12, 2023
    Publication date: December 28, 2023
    Inventors: Yanjun SUN, George CHERIAN, Alfred ASTERJADHI, Sai Yiu Duncan HO, Abhishek Pramod PATIL, Gaurang NAIK, Abdel Karim AJAMI
  • Publication number: 20230403545
    Abstract: A first access point (AP) of an AP multi-link device (MLD) is associated with a first communication link, and one or more secondary APs of the AP MLD are associated with one or more respective secondary communication links of the AP MLD. The first AP of the AP MLD generates a frame including a first change sequence field and one or more secondary change sequence fields. The first change sequence field indicates a presence or absence of a critical update associated with the first communication link, and each of the one or more secondary change sequence fields indicates a presence or absence of a critical update associated with a corresponding secondary communication link of the AP MLD. The first AP of the AP MLD transmits the frame over the first communication link of the AP MLD to a station (STA) of a STA MLD.
    Type: Application
    Filed: June 28, 2023
    Publication date: December 14, 2023
    Inventors: Abhishek Pramod PATIL, Sai Yiu Duncan HO, George CHERIAN, Alfred ASTERJADHI, Yanjun SUN
  • Patent number: 11844106
    Abstract: This disclosure provides systems, methods, and apparatus for managing data traffic in restricted target wake time (TWT) service periods (SPs). In some aspects, an access point (AP) receives a request frame from a wireless station (STA) associated with a client device via a peer-to-peer (P2P) link, the request frame indicating that the STA intends to exchange P2P communications with the client device during a r-TWT SP scheduled on a wireless medium. The AP obtains a transmission opportunity (TXOP) on the wireless medium during the r-TWT SP, the request frame identifying the client device. The AP transmits a trigger frame on the wireless medium responsive to obtaining the TXOP, the trigger frame allocating a portion of the obtained TXOP for P2P communications between the STA and the client device, wherein at least one of the response frame or the trigger frame indicates a Network Allocation Vector (NAV) exception for the client device.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: December 12, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Abdel Karim Ajami, Sai Yiu Duncan Ho, George Cherian, Alfred Asterjadhi, Abhishek Pramod Patil, Yanjun Sun, Gaurang Naik
  • Publication number: 20230389102
    Abstract: This disclosure provides systems, methods, and apparatus for wireless communications. In one aspect, an apparatus may obtain, for a first access point (AP), a first service set identifier (SSID) associated with single-link communications and obtain, for a second AP, a second SSID associated with multi-link communications. The apparatus may obtain, from a wireless communication device, a management frame include a multi-link operation information field that carries a first SSID and obtain a multi-link indication for the wireless communication device based, at least in part, on the first SSID, the multi-link indication indicating whether the wireless communication device includes AP capable of link aggregation, and selectively associate with the wireless communication device based on the multi-link indication.
    Type: Application
    Filed: April 21, 2023
    Publication date: November 30, 2023
    Inventors: Sai Yiu Duncan HO, Abhishek Pramod PATIL, George CHERIAN, Alfred ASTERJADHI, Yanjun SUN
  • Publication number: 20230379995
    Abstract: A wireless station (STA) operating as a non-simultaneous transmit-receive (NSTR) soft access point (AP) multi-link device (MLD) is associated with a primary link and a non-primary link. The NSTR softAP MLD transmits, on only the primary link, a frame including a complete profile of the primary link and indicating a complete profile of the non-primary link. The respective complete profiles of the primary link and the non-primary link each include capabilities, operation parameters, and other discovery information. The frame can include fields and elements that carry the complete profile of the primary link, and can include a multi-link (ML) element that indicates the complete profile of the non-primary link. The NSTR softAP MLD can receive or determine an update to the operation parameters of the non-primary link, and can transmit, on the primary link, an indication of the update to the operation parameters of the non-primary link.
    Type: Application
    Filed: August 4, 2023
    Publication date: November 23, 2023
    Inventors: Abhishek Pramod PATIL, George CHERIAN, Alfred ASTERJADHI, Sai Yiu Duncan HO, Yanjun SUN, Gaurang NAIK, Tushnim BHATTACHARYYA, Vikram PHOGAT
  • Publication number: 20230361911
    Abstract: This disclosure provides methods, devices and systems for enhanced bandwidth puncturing. Some implementations more specifically relate to punctured channel indications that support channel puncturing over a range of bandwidths achievable in accordance with the Institute of Electrical and Electronics Engineers (IEEE) 802.11be amendment, and future generations, of the IEEE 802.11 standard. In some implementations, an access point (AP) may communicate static punctured channel information to each associated wireless station (STA) in its BSS. In some other implementations, a transmit opportunity (TXOP) holder may communicate dynamic punctured channel information to a TXOP responder with which it intends to communicate. Still further, in some implementations, the TXOP responder may communicate additional punctured channel information to the TXOP holder responsive to the dynamic punctured channel information.
    Type: Application
    Filed: June 28, 2023
    Publication date: November 9, 2023
    Inventors: Yanjun SUN, Alfred ASTERJADHI, George CHERIAN, Abhishek Pramod PATIL, Sai Yiu Duncan HO
  • Publication number: 20230357173
    Abstract: Provided here are methods of making derivatives and prodrugs of substituted morpholines or pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: June 7, 2023
    Publication date: November 9, 2023
    Applicant: Supernus Pharmaceuticals, Inc.
    Inventors: Yanjun Sun, Bhaskara Rao Nallaganchu, Gary L. Olson
  • Patent number: 11805438
    Abstract: This disclosure describes systems, devices, apparatus, and methods, including computer programs encoded on storage media, for controlling a network with one or more access points (APs). A controller may be configured to schedule at least some resources of the one or more APs to improve network efficiency. The APs may measure and report a variety of information and statistics to the controller. The controller may determine one or more transmission parameters and one or more operations a given AP is permitted to perform during a respective time interval. The controller may communicate the one or more transmission parameters using an indication, such as a message. At least one AP associated with the controller may communicate with stations (STAs) using the one or more transmission parameters.
    Type: Grant
    Filed: May 17, 2022
    Date of Patent: October 31, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Yanjun Sun, Hemanth Sampath, Bibhu Mohanty, Brian Michael Buesker, Yuan Zhou, Eric Vanbuhler, Danyang Cong, Raamkumar Balamurthi, Harshit Joshi, Vamsi Vegunta, Danny Jen, Nitin Ravinder
  • Patent number: 11805551
    Abstract: This disclosure provides methods, devices and systems for providing energy detection based resolution in radio access technologies. In one aspect, a wireless communication device may include a first energy detection threshold (EDT) to identify a transmission opportunity in an unlicensed frequency band. The wireless communication device may detect a second wireless communication device having a second EDT to identify the transmission opportunity, the second EDT being greater than the first EDT. The wireless communication device may, based on detection of the second wireless communication device having the second EDT, modify a transmission configuration of the first wireless communication device.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: October 31, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Yanjun Sun, George Cherian, Maarten Menzo Wentink, Sai Yiu Duncan Ho, Abhishek Pramod Patil, Alfred Asterjadhi, Gaurang Naik, Abdel Karim Ajami
  • Publication number: 20230345365
    Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication that can be used to establish a restricted target wake time (TWT) session on a wireless medium. In some implementations, an access point (AP) establishes a restricted TWT session for one or more wireless stations (STAs) associated with latency sensitive traffic, the restricted TWT session including restricted TWT service periods (SPs) during which the AP reserves access to the wireless medium for only the one or more STAs associated with the latency sensitive traffic. The AP transmits a clear-to-send (CTS) frame at a start of each restricted TWT SP, the CTS frame indicating to other STAs that the wireless medium is unavailable for a duration of the respective restricted TWT SP. The AP transmits latency sensitive data to or receives latency sensitive data from the one or more STAs during at least one of the restricted TWT SPs.
    Type: Application
    Filed: June 26, 2023
    Publication date: October 26, 2023
    Inventors: Sai Yiu Duncan HO, George CHERIAN, Abhishek Pramod PATIL, Yanjun SUN, Alfred ASTERJADHI
  • Publication number: 20230345294
    Abstract: This disclosure provides methods, devices and systems for communicating over multiple links, for example, indicating buffered units (BUs) per traffic identifier (TID) for transmission to multi-link devices (MLDs). One innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication. The method can be performed, for example, by a non-access point (non-AP) MLD. The non-AP MLD can receive an indication of an association identifier (AID) associated with the non-AP MLD, wherein the indication of the AID indicates whether an AP has BUs for the non-AP MLD, determine one or more links associated with one or more TIDs based on a mapping of a plurality of TIDs, including the one or more TIDs, to a plurality of links, including the one or more links, receive the BUs associated with the one or more TIDs from the AP on the determined links.
    Type: Application
    Filed: February 3, 2023
    Publication date: October 26, 2023
    Inventors: George CHERIAN, Abhishek Pramod PATIL, Sai Yiu Duncan HO, Yanjun SUN, Alfred ASTERJADHI
  • Publication number: 20230337025
    Abstract: Methods, systems, and devices for wireless communications are described. In some aspects, two devices may support signaling and messaging designs that support bandwidths that are greater than 160 MHz for ranging null data packets (NDPs). For example, various signaling and messaging designs may support a use of a 320 MHz bandwidth for ranging NDPs as part of a ranging measurement procedure, which may offer greater resolution than narrower bandwidths. The signaling and messaging designs may include one or more updates for a null data packet announcement (NDPA) frame, for a trigger frame, for session negation messages (such as one or both of an initial fine timing measurement (IFTM) frame and an IFTM request (IFTMR) frame), for segmentation techniques for ranging NDPs, or for any combination thereof.
    Type: Application
    Filed: April 15, 2022
    Publication date: October 19, 2023
    Inventors: Yanjun Sun, Alireza Raissinia, Stephen Jay Shellhammer, Xiaoxin Zhang, George Cherian, Alfred Asterjadhi, Abhishek Pramod Patil
  • Publication number: 20230328669
    Abstract: This disclosure provides systems and methods for synchronizing wireless devices with each other. In some implementations, a device transmits, to at least one wireless station (STA), an indication of an enhanced synchronization mode on a first communication link associated with a first access point (AP) of the device. The device transmits, during the enhanced synchronization mode, a plurality of sync frames on the first communication link more often than Target Beacon Transmission Times (TBTTs) associated with the first communication link, each of the plurality of sync frames indicating a Timing Synchronization Function (TSF) offset between the first AP and a second AP of the device. In some instances, at least one of the plurality of sync frames may be a Fast Initial Link Setup (FILS) Discovery frame carrying a TSF value of the first AP.
    Type: Application
    Filed: April 11, 2022
    Publication date: October 12, 2023
    Inventors: Gaurang NAIK, Alfred ASTERJADHI, Abdel Karim AJAMI, George CHERIAN, Yanjun SUN, Abhishek Pramod PATIL, Sai Yiu Duncan HO
  • Publication number: 20230318758
    Abstract: Certain aspects of the present disclosure provide a method of wireless communications by a first multi-link device (MLD). The method generally includes establishing multiple links with at least one second MLD, obtaining network coded packets over at least one of the multiple links, decoding the network coded packets, based on a network decoding algorithm, to recover one or more uncoded packets, generating feedback based on the decoding, and outputting, for transmission, the feedback to the at least one second MLD.
    Type: Application
    Filed: April 4, 2022
    Publication date: October 5, 2023
    Inventors: Abdel Karim AJAMI, Sai Yiu Duncan HO, Alfred ASTERJADHI, George CHERIAN, Abhishek Pramod PATIL, Gaurang NAIK, Yanjun SUN
  • Patent number: 11778645
    Abstract: An access point (AP) of an AP multi-link device (MLD) is associated with a first communication link, and one or more secondary APs of the AP MLD are associated with one or more respective secondary communication links of the AP MLD. The first AP of the AP MLD generates a frame including a first change sequence field, one or more secondary change sequence fields, and a critical update flag subfield. The first change sequence field carries a value of the most-recent critical update for the first AP. The one or more secondary change sequence fields carry values of the most-recent critical updates for the one or more respective secondary APs. The critical update flag subfield carries an indication of a change in value of at least one of the secondary change sequence fields. The first AP transmits the frame over the first communication link of the AP MLD.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: October 3, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Abhishek Pramod Patil, George Cherian, Alfred Asterjadhi, Sai Yiu Duncan Ho, Yanjun Sun, Sandip Homchaudhuri, Yongchun Xiao
  • Patent number: 11778666
    Abstract: In some implementations, a first access point (AP) selects one or more other APs for participation with the first AP in a coordinated access point transmission session. The first AP obtains a transmission opportunity (TXOP), and transmits a frame indicating scheduling information for uplink (UL) or downlink (DL) transmissions to or from the selected APs, the scheduling information indicating a respective start time for the UL or DL transmissions to or from the selected APs, at least two of the start times being offset from one another by a time period associated with decoding a preamble of a wireless packet. The first AP transmits or receives wireless packets to or from one or more associated stations (STAs) at least partially concurrently with the transmission or reception of wireless packets by the selected APs to or from their respective associated STAs based on the scheduling information.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: October 3, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Yanjun Sun, George Cherian, Alfred Asterjadhi, Sai Yiu Duncan Ho, Abhishek Pramod Patil, Gaurang Naik, Abdel Karim Ajami
  • Publication number: 20230295100
    Abstract: Provided here are methods of making derivatives and prodrugs of substituted morpholines or pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: March 17, 2023
    Publication date: September 21, 2023
    Applicant: Supernus Pharmaceuticals, Inc.
    Inventors: Yanjun Sun, Bhaskara Rao Nallaganchu, Gary L. Olson
  • Publication number: 20230300916
    Abstract: An emulated wireless access point (AP) at a first PMC device (PMC1) establishes a first tunneled direct link setup (TDLS) session between a first station module (STA1) incorporated into the PMC1 and a second station module (STA2) incorporated into a second PMC device (PMC2). Following establishment of the TDLS session, the wireless AP is allowed to sleep; and most infrastructure management duties are handled by the STA1 during the session. PMC device battery charge may be conserved as a result. The emulated wireless AP may also establish a second TDLS link to a third station module (STA3) incorporated into a third PMC device (PMC3). The STA1 may then bridge data traffic flow between the STA2 and the STA3. Such bridging operation may enable communication between two PMC devices otherwise unable to decode data received from the other.
    Type: Application
    Filed: May 18, 2023
    Publication date: September 21, 2023
    Inventors: Leonardo William Estevez, Ariton Xhafa, Ramanuja Vedantham, Yanjun Sun
  • Publication number: 20230292252
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network entity may generate a transmit power envelope (TPE) element that includes fields that indicate maximum transmit powers for bandwidth sizes, including an extension field for a bandwidth whose size is greater than 160 MHz or for a bandwidth with channel puncturing, based at least in part on detecting a difference between a first bandwidth size configured for a first device operation mode and a second bandwidth size configured for a second device operation mode. The network entity may transmit the TPE element. Numerous other aspects are described.
    Type: Application
    Filed: March 9, 2023
    Publication date: September 14, 2023
    Inventors: Yanjun SUN, Alfred ASTERJADHI, George CHERIAN, Abhishek Pramod PATIL, Sai Yiu Duncan HO, Gaurang NAIK, Abdel Karim AJAMI