Patents Represented by Attorney, Agent or Law Firm Donald C. Kordich
  • Patent number: 8335248
    Abstract: Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Using multiple transmit and/or receive antennas and MIMO technology, multiple data streams can be transmitted within a single tone. During equalization, receivers can separate data received within a tone into individual data streams. The equalization process generally is computationally expensive. Equalizer functions include the inverse operation, which can be computed using the fast square root method; however, the fast square root method involves large numbers of computations for a set of matrices, where the size of a matrix in the set of matrices increases with the number of transmit or receive antennas. Utilizing a modification of the fast square root method, a subset of the elements of the matrices can be selected and updated to reduce the number and/or complexity of computations.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: December 18, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Dhananjay A. Gore, Hemanth Sampath, Edward Harrison Teague
  • Patent number: 8331284
    Abstract: A communication system receives attributes associated with access terminals within a cell and groups them in accordance with similarities between the received attributes. Resource assignment messages customized to their respective attributes are transmitted to the groups, thereby ensuring that all groups receive these messages. These groups are formed dynamically as the attributes of the access terminals vary when they traverse through a cell.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: December 11, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Thomas Richardson, Junyi Li
  • Patent number: 8332904
    Abstract: A method comprises establishing a session between a host and a display unit, including transmitting media content according to a television broadcasting standard, and implementing control traffic for the session on a bi-directional control link independent of the television broadcasting standard.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: December 11, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Krishnan Rajamani, Samir S. Soliman, Nishith Chaubey
  • Patent number: 8320928
    Abstract: Systems and methodologies are described that facilitate scheduling uplink transmissions. For instance, a time sharing scheme can be utilized such that differing mobile devices can be scheduled to transmit during differing time slots; however, it is also contemplated that a static scheme can be employed. Pursuant to an illustration, an interference budget can be combined with a time varying weighting factor associated with a base station; the weighting factor can be predefined and/or adaptively adjusted (e.g., based upon a load balancing mechanism). Moreover, the weighted interference budget can be leveraged for selecting mobile devices for uplink transmission (e.g., based at least in part upon path loss ratios of the mobile devices). Further, disparate interference budgets can be utilized by differing channels of a sector at a particular time. Also, for example, a base station can assign a loading factor to be utilized by wireless terminal(s) for generating channel quality report(s).
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: November 27, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Xinzhou Wu, Sundeep Rangan, Prashanth Hande, Arnab Das, Junyi Li
  • Patent number: 8320407
    Abstract: Techniques for transmitting data in a communication system are described. A packet may be partitioned into multiple subpackets, and each subpacket may be encoded separately. The subpackets may be mapped to resources assigned for transmission of the packet, with at least one subpacket being mapped to a subset of the assigned resources. The assigned resources may include multiple tiles, with each tile corresponding to a block of time frequency resources. The subpackets may be mapped to the tiles such that (i) the subpackets are mapped to equal number of tiles to achieve similar decoding performance, (ii) each subpacket is mapped to at least NMIN tiles, if available, to achieve a certain minimum diversity order for the subpacket, and/or (iii) each subpacket is mapped to a subset of the multiple tiles, if possible, so that the subpacket can be decoded without having to demodulate all of the tiles.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: November 27, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Jeremy H. Lin, Aamod Khandekar, Alexei Gorokhov, Avneesh Agrawal
  • Patent number: 8315660
    Abstract: A method of user power offset estimation for a wireless communication system is disclosed. Dedicated pilot symbols transmitted over at least one time-frequency region for a user are received. Power offset of the user is estimated based on the received dedicated pilot symbols.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: November 20, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Petru Cristian Budianu, Dhananjay A. Gore, Alexei Y. Gorokhov
  • Patent number: 8315240
    Abstract: The claimed subject matter relates to providing uplink data rate option information in an uplink traffic channel segment. A wireless terminal may indicate a data rate option being used for the segment via an energy pattern applied to the tone-symbols of the segment. To indicate a first data rate option, additional energy may be applied to a first set of tone-symbols of the segment. To indicate a second rate option, additional energy may be applied to a second set of tone-symbols of the segment, the second set being different from the first set. According to some aspects, each implemented energy pattern may be represented by a pattern, which has a slope (e.g., in a logical, pre-hopped representation of the channel segment), where some of the patterns have positive slope and some of the patterns have negative slope.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: November 20, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Hui Jin, Tom Richardson, Rajiv Laroia, Junyi Li
  • Patent number: 8315662
    Abstract: Systems and methodologies are described that facilitate controlling transmission power of a wireless terminal. A downlink power control channel segment may include an Orthogonal Frequency Division Multiplexing (OFDM) tone-symbol that may comprise a first component and a second component. The first component may be an in-phase (I) component and the second component may be a quadrature (Q) component, for example. A power command may be transmitted in the first component. Further, information associated with a wireless terminal may be transmitted in the second component. The information associated with the wireless terminal may be, for instance, a portion of a scrambling mask associated with the wireless terminal.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: November 20, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Pablo Alejandro Anigstein, Prashanth Hande, Junyi Li
  • Patent number: 8305943
    Abstract: Systems and methodologies are described that provide half-duplex communication in a frequency division duplex (FDD) system. Communications in an FDD system may be divided into half-duplex interlaces, wherein a terminal may receive at one time period and transmit at another time period. An access network in an FDD system may then utilize half-duplex communication to communicate with an access terminal that is not capable of transmitting and receiving simultaneously by using a half-duplex interlace. Further, an access network may also utilize full-duplex communication to communicate with an access terminal that is capable of transmitting and receiving simultaneously.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: November 6, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Aamod Khandekar, Naga Bhushan
  • Patent number: 8306520
    Abstract: Provided is a more efficient manner of transmitting a control message to reach into a neighboring sector (e.g., inter-sector) of a wireless network environment. The control message can be utilized for purposes such as handoff, indicating an amount of interference, inter-sector power control for managing inter-sector interference, sector loading, or other control messages. The control message can be placed on a set of resources utilizing planned reuse and/or statistical reuse. Statistical reuse includes selecting a subcarrier set for carrying the control message. According to some aspects, the control message can be sent over a backhaul channel.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: November 6, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: David Jonathan Julian, Dhananjay Ashok Gore
  • Patent number: 8306541
    Abstract: A wireless terminal receives an uplink traffic channel segment assignment including a maximum uplink rate option indicator. Each uplink rate option corresponds to a number of information bits, coding rate and modulation method. The maximum rate option indicator indicates the highest rate option that the wireless terminal is permitted to use when transmitting in the assigned traffic channel segment from the perspective of the base station. In some embodiments, the wireless terminal uses interference measurements to further quality, e.g., conditionally reduce, the maximum uplink rate option that may be used. Then, the wireless terminal selects an uplink rate option to use which is less than the determined allowed maximum uplink rate option, e.g., based on the amount of user data to communicate. The wireless terminal transmits data in the assigned uplink traffic channel segment in accordance with the wireless terminal selected uplink rate.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: November 6, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Rajiv Laroia, Hui Jin, Tom Richardson, Junyi Li
  • Patent number: 8295190
    Abstract: An improved method and system for determining round-trip time (RTT) during a radio link protocol (RLP) wireless communication link. The RTT estimate is negotiated by both sides of the RLP communication link without the need for the 3-way handshake generally required for RLP synchronization. The method includes techniques used by both sides of the RLP communication link to dynamically update and refine their initial, negotiated RTT estimates.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 23, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Nischal Abrol, Nikolai K. N. Leung
  • Patent number: 8295250
    Abstract: Communication systems and methods that mitigate false alarms due to Doppler shift are disclosed. Received message data is mapped to orthogonal Walsh codes, interleaved and scrambled with appropriate PN sequence prior to transmission. The transmitted message data is descrambled and deinterleaved upon reception. The energies associated with each of the Walsh code from various antennas and/or signal paths are combined to obtain a total energy for each Walsh code. If the total energy of the Walsh code exceeds a certain threshold it is declared as the received message else an erasure is indicated. As the data is interleaved prior to transmission, any phase ramp introduced due to Doppler is transformed into random phase errors upon deinterleaving at the receiver thereby mitigating false alarms.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: October 23, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Alexei Y. Gorokhov, Ravi Palanki
  • Patent number: 8295225
    Abstract: Systems and methodologies are described that provide techniques for generating and utilizing reverse link feedback for interference management in a wireless communication system. Channel quality and/or interference data can be obtained by a terminal from a serving sector and one or more neighboring sectors, from which an interference-based headroom value can be computed that contains interference caused by the terminal to an allowable range. The interference-based headroom value can then be provided with power amplifier (PA) headroom feedback to the serving sector. Based on the provided feedback from the terminal, the serving sector can assign resources for use by the terminal in communication with the serving sector. Further, the serving sector may choose to honor or disregard a received interference-based power value based on quality of service and/or other system parameters.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: October 23, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, Rajat Prakash, Mohammad J. Borran, Alexei Gorokhov
  • Patent number: 8285283
    Abstract: Method and apparatus for an access terminal which makes handoff decisions between a number of potential alternative attachment points based on service level indicating metrics are described. The access terminal computes a service level indicating metric differently for a current connection than for a potential alternative connection. A service level indicating metric is a function of loading information and received signal strength. A selection may be made by selecting between attachment points by selecting the attachment point having the highest service level indicating metric from among a plurality of attachment points, one per possible carrier where the attachment point which is considered for a given carrier is the one having the best connection for the given carrier. The access terminal handoff decision approach provides handoff decisions which are nearly as optimal as those which can be achieved using a centralized control node but without the requirement for centralized handoff decisions.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: October 9, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Prashanth Hande, Pablo Alejandro Anigstein, Shailesh Patil, Yunus Hussain, Hyung G. Myung
  • Patent number: 8265019
    Abstract: Systems and methodologies are described that facilitate dynamically adjusting scheduling priorities in relation to a combination of delay sensitive flows with delay requirements and best effort flows. The systems and methodologies provide optimal and efficient techniques to enable real time adjustment and assignment of bandwidth for a combination of best effort flows and delay sensitive flows. In particular, the bandwidth allocation is adjusted for each data packet such that delay requirements are met and the remaining bandwidth can be assigned to best effort flows.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: September 11, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Ritesh K. Madan, Arnab Das, Sundeep Rangan, Siddharth Ray
  • Patent number: 8254360
    Abstract: Apparatus and methods for interlacing communications in random access control channels of an Orthogonal Frequency Division Multiple Access (OFDMA) wireless communication system are described. A wireless communication device communicating over distinct OFDMA control channels to multiple serving sectors may operate under link limited conditions. The wireless communication device can interlace the communications between the multiple serving sectors. The wireless communication device can interlace the control channel communications in a number of interlaces equal to the number of distinct control channels over which communications are scheduled. In another embodiment, the wireless communication device divide the multiple scheduled control channel communications into two or more sets and can interlace the sets.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: August 28, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: David Jonathan Julian, Edward Harrison Teague
  • Patent number: 8238923
    Abstract: An apparatus and method of delivering data in a wireless communication system, the apparatus and method comprising of determining, based on first criteria, if a shared channel can utilized to transmit an actual data packet; converting said actual data packet into one or more first data packets, wherein each said one or more first data packet represent a portion of said actual data packet; and transmitting each said one or more first data packet using said shared channel.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: August 7, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: David Jonathan Julian, Avneesh Agrawal, Edward Harrison Teague
  • Patent number: 8238979
    Abstract: Systems and methods displaying information from a mobile device are described herein. One embodiment of the disclosure provides a method comprising detecting a wireless connection between a mobile device and an external display device. The method further comprises adjusting a display of the mobile device based on at least the detection of the wireless connection.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: August 7, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Krishnan Rajamani, Samir Soliman, Atul Suri, Sivaramakrishna Veerepalli
  • Patent number: 8219030
    Abstract: Systems and methodologies are described that facilitate employing distributed frequency planning and reuse factor optimization based upon forward link and/or reverse link interference management techniques. An optimal reuse factor for a base station can be determined based upon a metric that evaluates levels of service associated with neighboring base stations. Moreover, a subset of available resource sets can be selected for use by the base station; thus, a base station specific collection of resource sets can be formed through such selection. Further, mappings of each resource set to a set of physical resources can be disseminated in a network or portion thereof. According to another example, frequency hopping can be constrained to use of resources within a resource set (rather than across more than one resource set) as provided in a base station specific hopping pattern.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: July 10, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Alexei Gorokhov, Avneesh Agrawal, Naga Bhushan, Tingfang Ji