Patents by Inventor Hujun Yin

Hujun Yin 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).

  • Techniques for quick access channel information loading in wireless networks
    Patent number: 8064476
    Abstract: An embodiment of the present invention provides a method of quick access channel information loading in wireless networks, comprising mapping at least one quick access channel to one distributed resource unit of control tiles, said control tiles being spread across consecutive sub-carriers and consecutive OFDMA symbols, wherein each control tile and a predetermined number of sub carriers are used to send a bandwidth indicator and a predetermined number of sub carriers are used to send a bandwidth request message, and wherein there exist unique orthogonal sequences for the bandwidth indicator and each of the sequences are capable of being selected as a preamble sequence.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: November 22, 2011
    Assignee: Intel Corporation
    Inventors: Yuan Zhu, Xiangying Yang, Qinghua Li, Hujun Yin, Honggang Li
  • METHOD AND DEVICE FOR IMPLICIT RELAY
    Publication number: 20110280174
    Abstract: Embodiments of a method and apparatus for implicit relay of communication between a base station and a subscriber station within a wireless network are described. Some embodiments may reduce co-channel interference at the subscriber station and some embodiments may allow the base station to reduce its transmission power. Other embodiments may be described and claimed.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 17, 2011
    Inventors: Qinghua Li, Ozgur Oyman, Wendy C. Wong, Yuan Zhu, Hujun Yin
  • Systems and methods for arranging MAC layer PDUs in a downlink burst
    Patent number: 8031649
    Abstract: Embodiments of systems and methods for arranging data units in a downlink burst transmission are generally described herein. Other embodiments may be described and claimed. In some embodiments a group of data units are arranged by associated identifiers. These identifiers may also be associated with certain subscriber stations. Once arranged, the data units may be transmitted in a downlink burst and received by a subscriber station. The subscriber station may determine the arrangement of the data units to decode until a cutoff value is determined and passed.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: October 4, 2011
    Assignee: Intel Corporation
    Inventors: Shantidev Mohanty, Jose Puthenkulam, Shailender Timiri, Hujun Yin
  • TECHNIQUES TO REDUCE FALSE DETECTION OF CONTROL CHANNEL MESSAGES IN A WIRELESS NETWORK
    Publication number: 20110216843
    Abstract: A method and system of reducing false detection of control channel messages in a wireless communication system. This facilitates blind detection of control channel messages in the wireless communication network. In one embodiment of the invention, the control messages in the wireless communication system are randomized or scrambled to minimize or lower the probability of false detection of the control channel messages. The control channel message includes, but is not limited to, an Assignment Advanced Media Access Protocol (A-A-MAP) Information Element (IE) and the like. In one embodiment of the invention, the contents of the A-A-MAP IE are randomized or scrambled before encoding into A-A-MAP symbols.
    Type: Application
    Filed: September 24, 2010
    Publication date: September 8, 2011
    Inventors: YI HSUAN, Hujun Yin
  • METHOD FOR IMPROVING POWER EFFICIENCY OF SUBSCRIBER STATIONS
    Publication number: 20110188432
    Abstract: Disclosed is a method for improving power efficiency of subscriber stations in a communication network. A subscriber station is uniquely identified by a base station using a connection Identifier (CID). The method includes splitting CIDs of subscriber stations to form a plurality of first parts and a plurality of second parts. The method includes generating an index including a plurality of entries and transmitting the index to a plurality of subscriber stations by the base station. One or more subscriber stations switch to a power-saving mode on absence of a match between each entry of the plurality of entries with an equivalent part of CIDs associated with the one or more subscriber stations, thereby conserving power and improving power efficiency of the subscriber station. Further, at least one information element in a sub-MAP message may be compressed to reduce overhead.
    Type: Application
    Filed: April 12, 2011
    Publication date: August 4, 2011
    Inventor: Hujun Yin
  • Multi-Carrier Communications With Group-Based Subcarrier Allocation
    Publication number: 20110170446
    Abstract: A method and apparatus for subcarrier selection for systems is described. In one embodiment, the system employs orthogonal frequency division multiple access (OFDMA). In one embodiment, a method for subcarrier selection comprises a subscriber measuring channel and interference information for subcarriers based on pilot symbols received from a base station, the subscriber selecting a set of candidate subcarriers, providing feedback information on the set of candidate subcarriers to the base station, and receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the subscriber.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 14, 2011
    Applicant: Adaptix, Inc.
    Inventors: Xiaodong Li, Hui Liu, Hujun Yin, Guanbin Xing, Fuqi Mu
  • WLAN Having Load Balancing Based on Access Point Loading
    Publication number: 20110164520
    Abstract: A network having distribution of access point loading includes access points to which mobile stations can associate themselves based upon access point beacon signal levels and loading levels for the various access points. A mobile station receives beacon signals from various access points and determines a signal strength for the received beacon signals. The mobile station also receives access point loading information from the access points. The mobile station associates with an access point based upon the access point beacon signal strengths and the access point loading information.
    Type: Application
    Filed: February 14, 2011
    Publication date: July 7, 2011
    Applicant: AT&T INTELLECTUAL PROPERTY II, L.P.
    Inventors: Zoran Kostic, Kin K. Leung, Hujun Yin
  • Device, system, and method of channel quality indication
    Patent number: 7974242
    Abstract: Device, system, and method of channel quality indication. In some demonstrative embodiments a method may include, for example, calculating a plurality of channel-quality-indicator values corresponding to a plurality of sub-channels associated with a mobile communication device; and transmitting a channel-quality-indicator message from the mobile communication device to a base station, the channel-quality-indicator message including only first and second channel-quality-indicator values of the plurality of channel-quality-indicator values corresponding to first and second sub-channels of the plurality of sub-channels. Other embodiments are described and claimed.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: July 5, 2011
    Assignee: Intel Corporation
    Inventors: Rongzhen Yang, Xiaoliang Luo, Liang Jiang, Hujun Yin
  • UPLINK POWER CONTROL IN WIRELESS NETWORKS
    Publication number: 20110159913
    Abstract: Briefly, in accordance with one or more embodiments, one or more interference over thermal noise (IoT) values may be measured for one or more frequency partitions or a sounding area, or combinations thereof, and a difference between a current IoT value and a previous IoT value may be evaluated. If the difference is greater than or equal to a reset threshold, the current IoT value is broadcast to a mobile station to reset the IoT value. Otherwise an IoT differential value is broadcast to the mobile station to update the IoT with the IoT differential value. The mobile station may then perform open loop power control based on the IoT value for uplink broadcast.
    Type: Application
    Filed: July 27, 2010
    Publication date: June 30, 2011
    Inventors: Rongzhen Yang, Hujun Yin
  • Adaptive MAC fragmentation and rate selection for 802.11 wireless networks
    Publication number: 20110149770
    Abstract: A method for setting and adjusting MAC fragmentation threshold for IEEE 802.11 networks operating at different data rates is presented. The fragmentation threshold is adjusted based on throughput performance, delay constraints and hidden node influence.
    Type: Application
    Filed: February 18, 2011
    Publication date: June 23, 2011
    Inventors: Leonard Joseph Cimini, JR., Zoran Kostic, Kin K. Leung, Hujun Yin
  • TECHNIQUES TO PROVIDE PHYSICAL RESOURCE ALLOCATION USING A TREE-BASED STRUCTURE AND COMMUNICATE A CHANNEL QUALITY INDICATOR
    Publication number: 20110149807
    Abstract: In a wireless network, simultaneous support of distributed and contiguous sub-carrier allocation may be accomplished in the same sub-frame or time zone. Techniques are described herein that can be used to allocate distributed and/or contiguous basic (physical) resource blocks to users by specifying a codebook index and parent node. Techniques are described herein that can be used to flexibly set a number of sub-channels over which a subscriber station indicates a channel quality indicator to a base station. Sub-channels may be represented as nodes and may be grouped to include a parent node and child nodes. By specifying a code book to use and a parent node, the channel quality indicator of the parent and children nodes can be indicated.
    Type: Application
    Filed: March 4, 2011
    Publication date: June 23, 2011
    Inventors: Hujun Yin, Roshni Srinivasan, Sassan Ahmadi
  • WIRELESS BROADBAND RESOURCE ALLOCATION INDEXING
    Publication number: 20110141980
    Abstract: Wireless broadband resource allocation indexing is generally presented. In this regard a method is introduced comprising determining a total number of allowable continuous logical resource unit (LRU) allocations for a bandwidth, removing allowable allocations to generate a set of allocations that can be indexed with fewer bits than the total number of allowable allocations, and storing an index of the set of allocations in a memory. Other embodiments are also disclosed and claimed.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 16, 2011
    Inventors: Ping Wang, Roshni M. Srinivasan, Hujun Yin, Huaning Nin
  • DETERMINING HYBRID AUTOMATIC REPEAT REQUEST (HARQ) TIMING
    Publication number: 20110138244
    Abstract: A communication apparatus (CA) such as a mobile node/station (MN), a base station (BS), or a radio station (RS) may support determination of HARQ timing. The CA may generate at least in part one or more generalized frames such as a frequency division duplex (FDD) frame or a time division duplex (TDD) frame. The generalized FDD and TDD frames may include support to determine the HARQ timing considering various factors, which may affect the HARQ timing. The FDD and TDD frames may include information corresponding to various factors to determine the HARQ timing considering factors such as DL/UL ratio, number of sub-frames per frame, variable transmission time interval (TTI), relay zones, legacy IEEE® 802.16e zones, and availability of ACKCH.
    Type: Application
    Filed: December 3, 2009
    Publication date: June 9, 2011
    Inventors: Jing Zhu, Yujian Zhang, Hujun Yin
  • UPLINK POWER CONTROL SCHEME
    Publication number: 20110136448
    Abstract: An uplink power control technique may include a simplified maximum sector throughput (SMST) and a generalized maximum sector throughput (GMST). The SMST and GMST techniques may be used to determine a maximum sector throughput and cell-edge throughput to enhance the overall efficiency of the communication system. The uplink power control technique may determine the optimal uplink power value without collecting interference over thermal noise and without computing the individual channel losses in each neighboring sector.
    Type: Application
    Filed: December 3, 2009
    Publication date: June 9, 2011
    Inventors: Rongzhen Yang, Wei Guan, Hujun Yin
  • WLAN having load balancing by access point admission/termination
    Patent number: 7957742
    Abstract: A network includes access points that admit/terminate mobile station associations based upon the loading level of the access point and/or whether a mobile station can associate with a further access point. Mobile stations transmit information indicative of the access points to which they can associate. The access points determine whether to admit/terminate a mobile station association based upon access point loading.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: June 7, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Zoran Kostic, Kin K Leung, Hujun Yin
  • Subcarrier permutation to achieve high frequency diversity of OFDMA systems
    Publication number: 20110110342
    Abstract: An embodiment of the present invention provides a method of improving subcarrier permutation to achieve high frequency diversity of OFDMA systems in wireless networks, comprising introducing different tone selections for different symbols, such that if a channel has only a few tones in each symbol of a resource unit it can still have sufficient frequency diversity.
    Type: Application
    Filed: March 9, 2010
    Publication date: May 12, 2011
    Inventors: Yi Hsuan, Yang-Seok Choi, Hujun Yin
  • Techniques to control uplink power
    Publication number: 20110111766
    Abstract: Techniques are described that provide uplink power control techniques that can support different uplink multi-input multi-output (MIMO) transmission schemes. Open and closed loop power control schemes can be used to prescribe the power level of the mobile station.
    Type: Application
    Filed: November 10, 2009
    Publication date: May 12, 2011
    Inventors: Rongzhen Yang, Apostolos Papathanassiou, Hujun Yin, Yang-seok Choi, Wei Guan
  • Method and apparatus for an OFDMA parallel architecture scheduler
    Patent number: 7936836
    Abstract: A method and apparatus for calculating an optimal sub-channel allocation of Orthogonal Frequency Division Multiple Access (OFDMA) from a first bipartite graph that may map users, to a second bipartite graph that may map additional users, including original users. A calculation of each bipartite graph may include a calculation of maximum weight paths and matchings. Using a bipartite graph method for OFDMA sub-channel allocation may improve the time and complexity when establishing an OFDMA wireless system.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: May 3, 2011
    Assignee: Intel Corporation
    Inventor: Hujun Yin
  • Multi-carrier communications with group-based subcarrier allocation
    Patent number: 7933244
    Abstract: A method and apparatus for subcarrier selection for systems is described. In one embodiment, the system employs orthogonal frequency division multiple access (OFDMA). In one embodiment, a method for subcarrier selection comprises a subscriber measuring channel and interference information for subcarriers based on pilot symbols received from a base station, the subscriber selecting a set of candidate subcarriers, providing feedback information on the set of candidate subcarriers to the base station, and receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the subscriber.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: April 26, 2011
    Assignee: Adaptix, Inc.
    Inventors: Xiaodong Li, Hui Liu, Hujun Yin, Guanbin Xing, Fuqi Mu
  • Base station and method for mitigating interference in a sectorized communication network
    Patent number: 7933346
    Abstract: Embodiments of a base station and method for mitigating interference in a sectorized wireless communication network are generally described herein. Other embodiments may be described and claimed. In some embodiments, some partitions of subchannels are configured in accordance with the distributed subcarrier permutation scheme for use within each sector of a base station, and one or more partitions of subchannels is configured in accordance with the contiguous subcarrier scheme for use within each sector of the base station.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: April 26, 2011
    Assignee: Intel Corporation
    Inventors: Hujun Yin, Roshni M Srinivasan