Patents by Inventor Srinivas Katar

Srinivas Katar 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: 9614585
    Abstract: A service provider device of a local communication network communicates a first frame with an electric vehicle via a first communication medium to associate with the electric vehicle, establish a communication link with the electric vehicle, and to add the electric vehicle to the local communication network. After an association process between the electric vehicle and the service provider device is successfully completed, the electric vehicle and/or the service provider device can execute operations that extend the utility of their respective communication devices by switching to a new communication medium. By switching to the new communication medium, the electric vehicle and/or the service provider device can connect to a remote communication network. The service provider device communicates a second frame with at least a network device of the remote communication network via the new communication medium.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 4, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Srinivas Katar, Rouhana Rouhana, Hao Zhu
  • Publication number: 20170094556
    Abstract: Methods, systems, and apparatuses are described for adaptive dwell time for scan procedures. A wireless station (STA) may identify a scan period during which a passive scan procedure is performed on a first channel. The STA may analyze a channel congestion metric during at least a portion of the scan period. The STA may transition from the passive scan procedure to an active scan procedure on the first channel during the scan period based at least in part on the analyzed channel congestion metric.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 30, 2017
    Inventors: Sandip HomChaudhuri, Pradeep Kumar Yenganti, Michael Richard Green, Alireza Raissinia, Srinivas Katar, Hoon Ki Lee
  • Publication number: 20170086061
    Abstract: Methods, systems, and devices are described for wireless communication. An access point (AP) may group stations (STAs) into multi-user (MU) groups with group identifiers (IDs). Within each MU group, the AP may dynamically configure several STAs into a transmission set. Each transmission set may include a different combination of STAs. In some cases, the AP may assign a STA to multiple transmission sets within a group ID. In certain scenarios, the AP may assign a STA to more than one group ID. The AP may restrict the number of group IDs to which a STA is assigned. Each MU group may include a number of user positions that may be occupied by one or more STAs. In some cases, the AP may restrict the number of STAs that may be assigned to (i.e., occupy) each user position.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 23, 2017
    Inventors: Xiaolong Huang, Chao Zou, Srinivas Katar
  • Publication number: 20170086169
    Abstract: Methods, systems, and devices are described for wireless communication. An access point (AP) may group stations (STAs) into multi-user (MU) groups with group identifiers (IDs). Within each MU group, the AP may dynamically configure several STAs into a transmission set. Each transmission set may include a different combination of STAs. In some cases, the AP may assign a STA to multiple transmission sets within a group ID. In certain scenarios, the AP may assign a STA to more than one group ID. The AP may restrict the number of group IDs to which a STA is assigned. Each MU group may include a number of user positions that may be occupied by one or more STAs. In some cases, the AP may restrict the number of STAs that may be assigned to (i.e., occupy) each user position.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 23, 2017
    Inventors: Xiaolong Huang, Chao Zou, Srinivas Katar
  • Publication number: 20170079044
    Abstract: A method for resource allocation includes determining, based on topology information, resource compatibility between a first basic service set (BSS) and a second BSS. The method also includes, in response to determining the first BSS and the second BSS are incompatible, assigning a first device the first BSS to a first group of devices and assigning a second device of the second BSS to a second group of devices. The method further includes allocating a communication resource between multiple groups of devices, the multiple groups including the first group and the second group.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 16, 2017
    Inventors: Hao Zhu, Srinivas Katar
  • Patent number: 9590707
    Abstract: Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes receiving, by a first wireless device, compressed beamforming information from each of a plurality of stations, the compressed beamforming information including a feedback signal-to-noise ratio (SNR) value and compressed feedback matrix. The method also includes determining a multi-user signal-to-interference-plus noise ratio (SINR) metric for each of the plurality of stations based at least in part on the received feedback SNR values and the received compressed feedback matrices.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: March 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Eugene Baik, Ahmed Ragab Elsherif, Qinghai Gao, Gregory Steele, Srinivas Katar, Didier Johannes Richard van Nee, Ehab Tahir
  • Publication number: 20170063438
    Abstract: Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes receiving, by a first wireless device, compressed beamforming information from each of a plurality of stations, the compressed beamforming information including a feedback signal-to-noise ratio (SNR) value and compressed feedback matrix. The method also includes determining a multi-user signal-to-interference-plus noise ratio (SINR) metric for each of the plurality of stations based at least in part on the received feedback SNR values and the received compressed feedback matrices.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 2, 2017
    Inventors: Eugene Baik, Ahmed Ragab Elsherif, Qinghai Gao, Gregory Steele, Srinivas Katar, Didier Johannes Richard van Nee, Ehab Tahir
  • Publication number: 20170064536
    Abstract: Methods, systems, and devices are described for wireless communications. A communication device may utilize enhanced roaming techniques to use multiple channel maps for a high density AP environment. For instance, a communication device performs at least a partial channel scan by a communications device while the communications device is connected to an access point (AP) associated with a basic service set identifier (BSSID). The communication device further selects a channel map from a plurality of channel maps associated with the BSSID based at least in part on the partial scan, wherein each of the channel maps associated with the BSSID comprises a different set of signal strength measurements for a same set of neighboring APs. The communication device also uses the selected channel map as a basis for a roaming operation by the wireless device.
    Type: Application
    Filed: September 2, 2015
    Publication date: March 2, 2017
    Inventors: Srinivas Katar, Xiaolong Huang, Keshav Kishore Sahai, Farrukh Usmani, Hoon Ki Lee
  • Publication number: 20170064618
    Abstract: Methods, systems, and devices are described for wireless communications. A communication device may utilize enhanced roaming techniques to dynamically adjust signal strength thresholds in a high density AP environment. For instance, a communication device determines a signal strength of a communication link between a wireless device and an access point (AP). The communication device further compares the signal strength value to at least a low threshold and a high threshold and performs a channel scan for the communication link when the signal strength value is below the low threshold. The communication device also adjusts the low threshold when the signal strength value is greater than the high threshold.
    Type: Application
    Filed: September 2, 2015
    Publication date: March 2, 2017
    Inventors: Srinivas Katar, Xiaolong Huang, Keshav Kishore Sahai, Farrukh Usmani, Hoon Ki Lee
  • Patent number: 9577923
    Abstract: An advanced gateway for multiple broadband access can include a plurality of broadband network interfaces. The advanced gateway can route data from a local network interface to a broadband network interface when a performance attribute of the broadband network meets or exceeds a data characteristic of data conveyed through the local network interface. In another embodiment, a first advanced gateway can send a portion of data received through the local network interface to a second advanced gateway when performance attributes associated with the first advanced gateway cannot meet or exceed a data characteristic of data received through a local network interface of the first advanced gateway. In yet another embodiment, an advanced gateway can receive commands from service providers, determine a recipient device for the command and forward the command to the recipient device through a device interface coupled to the recipient device.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Purva R. Rajkotia, Todd D. Antes, Srinivas Katar, Hassan Afkhami
  • Publication number: 20170041961
    Abstract: Methods, systems, and devices are described for wireless communication. A wireless device may detect a delay in reverse link throughput. The wireless device may reduce the delay by modifying channel access parameters. In one aspect, the wireless device may adjust enhanced distributed channel access (EDCA) parameters. For example, the wireless device may modify contention window size (CW) and arbitration interframe spacing (AIFS). In some cases, the wireless device may instigate EDCA parameter adjustments in another wireless device in the wireless system (e.g., by sending an EDCA adjustment request message). The channel access adjustments may be triggered by detection of various conditions that are indicative of the reverse link delay. For example, the wireless device may monitor the communication of acknowledgments (ACKs) and adjust EDCA parameters if the ACKs are delayed. In other cases, the wireless device may adjust EDCA parameters based at least in part on multi-user (MU) communications.
    Type: Application
    Filed: August 5, 2015
    Publication date: February 9, 2017
    Inventors: Chao Zou, Srinivas Katar, Xiaolong Huang, Hao Zhu
  • Publication number: 20170019837
    Abstract: Systems and methods are disclosed that may adjust the likelihood and/or frequency with which a wireless device performs scanning operations to reduce power consumption without degrading the ability of the wireless device to identify the best available access point with which to associate. In some aspects, the wireless device may adjust the likelihood and/or frequency of performing scanning operations based on a motion state of the wireless device, a change in the motion state of the wireless device, a signal strength of an associated access point, and/or the connection status of the wireless device.
    Type: Application
    Filed: March 9, 2016
    Publication date: January 19, 2017
    Inventors: Srinivas Katar, Xiaolong Huang, Hoon Ki Lee, Farrukh Usmani
  • Publication number: 20170013493
    Abstract: Methods, systems, and devices are described for wireless communications. A device may utilize enhanced roaming techniques to identify a candidate channel for roaming. In one example, a device determines whether a candidate channel is congested by calculating a congestion metric associated with traffic over the shared channel. In some examples, the congestion metric is calculated based at least in part on an amount of energy measured over the candidate. For instance, the calculated congestion metric can be an instantaneous congestion level measured during a CCA. The device may then determine whether to roam to the candidate channel based at least in part on the calculated congestion metric.
    Type: Application
    Filed: November 17, 2015
    Publication date: January 12, 2017
    Inventors: Sandip HomChaudhuri, Xiaolong Huang, Pradeep Kumar Yenganti, Srinivas Katar
  • Publication number: 20170006480
    Abstract: Methods, systems, and devices are described for wireless communications. An access point (AP) communicates to a multi-user (MU) group of stations (STAs) that are assigned disparate modulation and coding schemes (MCSs). The AP sends an MU transmission to the MU group using an MCS and transmit power combination that is associated with the highest estimated throughput. The AP selects the MCS and transmit power combination from two configurations. In the first configuration, a single MCS and corresponding transmit power is used for the MU transmission. In the second configuration, a single transmit power and two different MCSs are used for the MU transmission. Both configurations may use the MCSs associated with the STAs in the MU group. The transmit power may correspond to one of the selected MCSs.
    Type: Application
    Filed: October 1, 2015
    Publication date: January 5, 2017
    Inventors: Xiaolong Huang, Srinivas Katar, Chao Zou
  • Patent number: 9538535
    Abstract: A system and method are disclosed that may allow a STA to selectively change frequency bands from an operating band to a candidate band based on operating conditions. In response to determining that a channel condition is within a band switch region associated with a candidate band, the STA may select the candidate band and temporarily switch to it. The STA may select an initial modulation and coding scheme for the candidate band and probe the candidate band with data to determine an estimate of candidate band goodput. If the estimate of candidate band goodput is greater than the operating band goodput, the STA may switch to the candidate band.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: January 3, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaolong Huang, Tevfik Yucek, Srinivas Katar
  • Patent number: 9537792
    Abstract: A master network device determines to transmit data from the master network device to a plurality of client network devices of a network. In one example, the master network device can generate a data frame including a payload with a plurality of symbols. The payload may include at least one symbol allocated for each of the client network devices. The plurality of symbols may be arranged in a predefined pattern in the payload. In another example, the master network device may generate a data frame including a payload with one or more symbols. Each symbol may include a plurality of frequency carriers, and may include at least one frequency carrier allocated for each of the client network devices. The plurality of frequency carriers can be allotted to the client network devices according to a partitioning pattern. The master network device then transmits the data frame to the client network devices.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: January 3, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Rouhana Rouhana, Hassan Kaywan Afkhami, Srinivas Katar
  • Patent number: 9537641
    Abstract: A first powerline communication device, associated with a first powerline communication network, determines a plurality of time intervals in a beacon period of the first powerline communication network based, at least in part, on variations in levels of interference from a second powerline communication network which shares a powerline communication medium with the first powerline communication network. The first powerline communication device determines at least one channel adaptation parameter for each of the plurality of time intervals in the beacon period to compensate for effects of the variations in the levels of interference from the second powerline communication network. The first powerline communication device applies the at least one channel adaptation parameter corresponding to one or more of the plurality of time intervals in the beacon period when transmitting data via the powerline communication medium.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: January 3, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Srinivas Katar, Hassan Kaywan Afkhami, Hao Zhu, Lawrence Winston Yonge, III
  • Patent number: 9521090
    Abstract: Systems and methods for connecting new stations to a secure network. New stations can send connection requests to a headend device. The headend device can retrieve a device access key associated with the new station and can provide a network membership key to the new station based upon authentication of the new station using the device access key.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: December 13, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Lawrence W. Yonge, III, Srinivas Katar, Manjunath Krishnam
  • Publication number: 20160345343
    Abstract: Methods, systems, and apparatuses are described for wireless communications. More particularly, an access point (AP) identifies a plurality of multi-user multiple-input multiple-output (MU-MIMO) groups associated with a wireless station (STA). The AP determines a communication metric associated with each of the plurality of MU-MIMO groups. The communication metric provides an indication of the compatibility of the STAs in the MU-MIMO group. The AP prioritizes at least one of the plurality of MU-MIMO groups based at least in part on the communication metric associated with the prioritized MU-MIMO group. The AP creates a preferred group list and/or a blacklisted group list and included the prioritized MU-MIMO group in the appropriate group list.
    Type: Application
    Filed: September 17, 2015
    Publication date: November 24, 2016
    Inventors: Ahmed Ragab Elsherif, Qinghai Gao, Xiaolong Huang, Ehab Tahir, Nathaniel Houghton, Vincent Knowles Jones, IV, Srinivas Katar
  • Publication number: 20160338059
    Abstract: A system and method are disclosed that may allow a STA to selectively change frequency bands from an operating band to a candidate band based on operating conditions. In response to determining that a channel condition is within a band switch region associated with a candidate band, the STA may select the candidate band and temporarily switch to it. The STA may select an initial modulation and coding scheme for the candidate band and probe the candidate band with data to determine an estimate of candidate band goodput. If the estimate of candidate band goodput is greater than the operating band goodput, the STA may switch to the candidate band.
    Type: Application
    Filed: May 11, 2015
    Publication date: November 17, 2016
    Inventors: Xiaolong Huang, Tevfik Yucek, Srinivas Katar