Patents by Inventor Rong SHAO

Rong SHAO 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: 8280445
    Abstract: A system and method of performing a beam discovery between a device and a plurality of other devices in a wireless network is disclosed. Sector training sequences to a plurality of other devices are transmitted via a transmit directional antenna having a set of transmit sectors. A plurality of feedback messages are received from the plurality of other devices, where the plurality of feedback messages are indicative of optimum transmit sectors that have been determined at the other devices based at least in part on the sector training sequences. Beam training sequences are transmitted to the plurality of other devices via the transmit directional antenna. A plurality of feedback message indicative of optimum transmit beam directions within the optimum transmit sectors are received from the plurality of other devices.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: October 2, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su Khiong Yong, Huai-Rong Shao, Xiangping Qin, Pengfei Xia, Chiu Ngo
  • Patent number: 8265657
    Abstract: A method and system for device discovery in a wireless network is provided. The device discovery involves directionally transmitting a data unit from a transmitting station over a channel in different directions to emulate omni-directional transmission, receiving the data unit transmissions from different directions at a receiving station, determining the quality of the transmissions received from the different directions, and detecting location information for the transmitting station relative to the receiving station based on the highest quality transmission among the transmissions received from the different directions.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: September 11, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Harkirat Singh, Chiu Ngo
  • Publication number: 20120224496
    Abstract: Embodiments of the invention provide connection maintenance for communication of audio/video (AV) information. One implementation comprises transmitting audio/video (AV) information as multiple spatial streams from a wireless transmitter to at least one wireless receiver over a wireless link, wherein each spatial stream is targeted to one of multiple AV devices connected to the wireless receiver. Receiving the AV information at the wireless receiver and providing the AV information from each spatial stream to a target AV device connected to the wireless receiver via a communication link, wherein each communication link corresponds to a spatial stream. Detecting connection status information for the wireless link and the communication links. Transmitting the connection status information from the wireless receiver to the wireless transmitter.
    Type: Application
    Filed: March 1, 2012
    Publication date: September 6, 2012
    Inventors: Huai-Rong Shao, Ju-Lan Hsu, Chiu Ngo
  • Patent number: 8259647
    Abstract: A system and method for performing medium access control in a system for wireless communication of uncompressed video is disclosed. In one aspect, the method includes communicating a control initiation request message during a contention based period of a superframe period. The control initiation request message contains information allowing a device coordinator to determine a reserved time slot for communication of the requested message exchange. The requested message exchange is then performed in a non-contentious environment, thereby limiting collisions of contention based messages. The control initiation procedure and subsequent message exchanges take place on a low-rate channel. Transmission on the low-rate channel is time division duplexed with a high-rate channel, where transmission at any one time can take place on either the high-rate or the low-rate channel.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Harkirat Singh, Chiu Ngo
  • Publication number: 20120213208
    Abstract: Performing distributed contention-free communication channel reservation for wireless communication, is disclosed. One implementation involves providing access to a shared communication channel in a wireless network including multiple wireless stations, by performing distributed channel time reservation for contention-free access to a shared wireless channel by each wireless station, based on a prior successful contention by the wireless station for access to the channel in a wireless network.
    Type: Application
    Filed: April 30, 2012
    Publication date: August 23, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ju-Lan Hsu, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8243823
    Abstract: A method and system for communication uncompressed video over a wireless communication medium is provided. Pixels in an uncompressed video frame are grouped into groups of pixels for wireless transmission from a transmitter to a receiver, wherein the neighboring pixels in each group possess (have) high spatial correlation. Upon receiving the pixel groups, the receiving station reconstructs the video frame from the received pixel groups, wherein upon detecting an erroneous pixel in a group, information from one or more neighboring pixels in that pixel group are used in place of the erroneous pixel. Further, FEC encoding is utilized recovering bit-errors.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: August 14, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8212722
    Abstract: A system and method for discovering and tracking communication directions is disclosed herein. In one embodiment, communication directions for two devices with asymmetric antenna systems are discovered. In one embodiment, a contention access period (CAP) is partitioned into an association CAP and a regular CAP, either of which may be further partitioned into sub-CAPs corresponding to different reception directions. In one embodiment, an association request command is transmitted by a device at different association sub-CAPs to train a transmission direction of the device. In one embodiment, further training is performed to find the best communication directions, as collisions may occur when association request commands are transmitted at different association sub-CAPs.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: July 3, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Su Khiong Yong, Chiu Ngo
  • Patent number: 8208392
    Abstract: A system and method for performing a beam discovery between peer stations is disclosed. A channel time message indicating an allocation of a first time period for a peer-to-peer beam discovery (PBD) is received, where the PBD is configured to discover a beam direction to be used for data transfer to a peer station. The PBD is executed between two peer stations during the first time period. Data is transferred to the peer station via the discovered beam direction if the PBD is successful.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: June 26, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Xiangping Qin, Huai-Rong Shao, Chiu Ngo
  • Publication number: 20120133827
    Abstract: A protocol for wireless transmission of audio/video (A/V) information is provided. The protocol includes sending a request message from a requester to a responder for changing A/V format of an A/V stream transmission between the requester and the responder over a wireless communication medium. In reply to the request message, sending a response message from the responder to the requester for synchronizing the A/V format change. The requester and the responder changing the A/V format of the A/V stream in synchrony.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 31, 2012
    Inventors: Ju-Lan Hsu, Huai-Rong Shao, Chiu Ngo
  • Publication number: 20120135677
    Abstract: Relay-initiated relay teardown operations in wireless communication networks. One embodiment comprises selecting a wireless relay among multiple candidate wireless relays and setting up relay operations using the selected wireless relay for wireless communication between wireless stations via the selected wireless relay. The selected wireless relay provides relay operations for wireless communication for wireless communication between wireless stations via the selected wireless relay. Terminating the relay operations is initiated by the selected wireless relay.
    Type: Application
    Filed: September 26, 2011
    Publication date: May 31, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ju-Lan Hsu, Huai-Rong Shao, Chiu Ngo
  • Publication number: 20120133828
    Abstract: A method and system is provided for wireless transmission of audio/video information via different wired AV interface formats. A method and system for wireless communication of audio/video AV information between AV devices includes receiving audio/video (AV) information from a first AV module via a first wired AV interface in a first AV device, applying interface dependent processing to the AV information, and transmitting the processed AV information from a wireless transceiver over a wireless channel to a wireless receiver of a second AV device. The second AV device includes a second wired AV interface and the first AV interface is of a different type than the second interface device.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 31, 2012
    Inventors: Huai-Rong Shao, Ju-Lan Hsu, Chiu Ngo
  • Patent number: 8189526
    Abstract: Performing distributed contention-free communication channel reservation for wireless communication, is disclosed. One implementation involves providing access to a shared communication channel in a wireless network including multiple wireless stations, by performing distributed channel time reservation for contention-free access to a shared wireless channel by each wireless station, based on a prior successful contention by the wireless station for access to the channel in a wireless network.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: May 29, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Lan Hsu, Huai-Rong Shao, Chiu Ngo
  • Patent number: 8179805
    Abstract: Wireless communication between a first transmitter and a first receiver for a new transmission is established on the same wireless data channel used for ongoing transmission between a second transmitter and a second receiver. This is achieved by determining if the second receiver can receive signals from the first transmitter, and determining if the first receiver can receive signals from the second transmitter. If the second receiver cannot receive signals from the first transmitter, and the first receiver cannot receive signals from the second transmitter, then a new transmission is performed from the first transmitter to the first receiver by spatial reuse of the wireless data channel at least partially concurrently with the ongoing transmission on the data channel.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: May 15, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Huai-Rong Shao, Xiangping Qin, Chiu Ngo
  • Patent number: 8179871
    Abstract: A method and system for channel access control for transmission of uncompressed video information over wireless channels. A contention-free period (CFP) for high-rate and low-rate channels is divided into schedules in which one or multiple periodical channel time blocks are reserved for wireless transmission of isochronous streams.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: May 15, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Harkirat Singh, Chiu Ngo
  • Patent number: 8175041
    Abstract: A system and method for wireless communication of audiovisual data are disclosed. One embodiment of the system includes a wireless transmitter and a wireless receiver configured to change the size of audiovisual data in response to a change in the condition of a wireless channel. The wireless transmitter is configured to transmit the audiovisual data over the wireless channel. The wireless receiver is configured to receive the audiovisual data over the wireless channel. The wireless transmitter includes an application layer, media access control (MAC) layer, and physical (PHY) layer. The wireless receiver includes an application layer, MAC layer, and PHY layer. The application or MAC layer of the wireless transmitter is configured to change the size of the audiovisual data in response to a change in the condition of the wireless channel. The application or MAC layer of the wireless receiver is configured to restore the size of the audiovisual data.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: May 8, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo
  • Patent number: 8169995
    Abstract: A system and method using a medium access control (MAC) header for a wireless communication system including an application layer, a MAC layer, and a physical (PHY) layer is disclosed. The MAC header accommodates time-delay insensitive data transfer between devices located in the network. The MAC header finds particular benefits in short range networks that transfer high definition (HD) video between components. One embodiment of the invention comprises a method of transferring data in a wireless communication network for uncompressed video including fragmenting the data into a plurality of data packets; appending a PHY header to at least one of the data packets to form a MAC frame; setting a field in the PHY header to indicate that the packets do not contain audio video (A/V) data; and transmitting the MAC frame to another device in the wireless communication network.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: May 1, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Huai-Rong Shao, Xiangping Qin, Chiu Ngo
  • Patent number: 8165050
    Abstract: A system and method for use of a short beacon in a wireless communication network is disclosed. In one embodiment, the method comprises generating a short beacon comprising PHY information, wherein the short beacon excludes MAC information and transmitting the short beacon via the wireless network. In general, three types of short beacons are disclosed, a first type consisting only of a PHY preamble, a second type also including a PHY header, and a third type also including a MAC header. In addition, the scheme of common beacons and individual beacons is described. Common beacons are broadcast omni-directional at the beginning of each superframe with low data rate and individual beacons are unicast to individual devices directionally with high data rate. A common beacon contains information intended for all of the devices of the network. An individual beacon contains information intended for one particular device.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: April 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chiu Ngo, Huai-Rong Shao
  • Patent number: 8135400
    Abstract: The present invention provides a method and a system for device discovery in wireless communication. One implementation involves scanning one or more wireless channels to discover a partner wireless station for a new transmission, by detecting peak energy and beacons on each scanned channel. If a beacon is not detected, then selecting the clearest channel among the scanned channels, and transmitting beacons on the clearest channel. Upon detecting a beacon from a partner station, establishing association with the partner station and selecting a wireless data channel for communication with the partner station. Another implementation involves discovering a partner wireless station to establish a data channel for communication with a discovering station that is associated with a coordinator station, and transmitting a bandwidth reservation request to the coordinator to reserve channel time for control message exchange between the discovering station and the partner station.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: March 13, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Harkirat Singh, Xiangping Qin, Chiu Ngo
  • Patent number: 8127206
    Abstract: A system and method for wireless communication of uncompressed video data includes concealing corrupted portions of video data. Video packets received are transmitted over a wireless channel. Each of the video packets includes data blocks forming video data representing at least part of a video frame. Each of the data blocks is encoded with an error correction code. A data block determined to be corrupted is replaced with an uncorrupted data block selected from the data blocks in the video packets. The corrupted data block includes a first displayable element on the video frame and the uncorrupted data block includes a second displayable element on the video frame. The uncorrupted data block is selected at least partially based on proximity between the first and second displayable elements on the video frame.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: February 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harkirat Singh, Xiangping Qin, Huai-Rong Shao, Chiu Ngo, Huaning Niu
  • Patent number: 8111647
    Abstract: A system and method of wireless data communication over a network of devices and device types are disclosed. In one aspect, the beacons of a first device type are sent and received from devices of the first device type or a second device type, by a first device of the first device type. A plurality of beacons of the first device type or the second device type are sent or received from a plurality of devices of the first device type or a second device type, by a second device of the second device type. Each of channels by the first device is sensed. A free channel for data communication between the first device and the second device is located. Beacons of the first device type are sent out by the first device. Channel reservations of time blocks are made of the free channel for data transmissions.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: February 7, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Huai-Rong Shao, Chiu Ngo