Patents Assigned to Clearwire IP Holdings, LLC
  • Patent number: 8750878
    Abstract: A method and system of determining whether a mobile station is located inside (or moving into) a repeater's coverage area and using the determination in a handover procedure. An access network may receive from a mobile station communicating on a first wireless link an indication of channel quality for the first wireless link and a second wireless link that serve the same coverage area. The access network may then use the channel quality indicators to determine whether the mobile station is located inside (or moving into) a repeater's coverage area, such as by comparing the channel quality indicators. If the access network determines that the mobile station is located inside (or moving into) the repeater's coverage area, it may also initiate a handover of the communication with the mobile station to the repeated wireless link (e.g., which may include suspending application of a load threshold to the repeated wireless link).
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: June 10, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Saied Kazeminejad
  • Patent number: 8731034
    Abstract: The present invention relates to a method, a computer readable medium, and a system of payload encoding and modulation and, more particularly, to a method, a computer readable medium, and a system of payload encoding and modulation for channel quality feedback. A method includes sending a Channel Quality Indicator (CQI) in a x-bit modulation scheme, and after sending the CQI, sending at least one CQI in a y-bit modulation scheme, the at least one CQI indicating one of an increment and a decrement of a previous CQI. The method further includes detecting a trigger event, and when the trigger event is detected, sending the CQI in the x-bit modulation scheme.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: May 20, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Durga Prasad Satapathy
  • Patent number: 8699445
    Abstract: A method of operating a communication system comprises exchanging initial communications between a wireless communication device and a communication network over a wireless connection between the wireless communication device and a network access system and a network connection between the wireless communication device and the communication network. The method further comprises performing a plurality of ranging processes to monitor a status of the wireless connection. Upon successfully completing a ranging process of the plurality of ranging processes, the method comprises determining a duration elapsed since the last successful ranging process and processing the duration to determine if the duration satisfies a criteria.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: April 15, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Chunmei Liu, Masoud Olfat, Feng Huang, Mohammad Hassan Partovi, David S. McGinniss
  • Patent number: 8699423
    Abstract: An indicator of throughput for one or more network elements is received. A plurality of slots are allocated to a plurality of devices that are operating using a plurality of combinations of modulation and coding. This allocation is based upon the indicator of throughput for the one or more network elements. An indicator of throughput for one or more network elements is received. A plurality of requests for wireless throughput are received from a plurality of wireless devices. Wireless throughput for each of the plurality of wireless devices is allocated based on a wireless throughput indicator associated with each of the plurality of wireless devices and the indicator of throughput.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: April 15, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Howard Bishop Anderson, Vijay Rudraraju, Esmail Hejazi Dinan, Hemanth Balaji Pawar, Daniel A. Vivanco
  • Patent number: 8700965
    Abstract: An apparatus and method of configuring a number of retransmissions for an automatic repeat request (ARQ) scheme (e.g., hybrid ARQ) includes configuring one or more first maximum retransmission numbers based on respective one or more first predetermined values and independent of a second maximum retransmission number. The first maximum retransmission numbers may indicate a maximum number of retransmissions related to respective service flows operational with the base station. The second maximum retransmission number may indicate a maximum number of retransmissions related to control messages transmitted in the wireless network, and may be configured based on a second predetermined value. The configuration of the first maximum retransmission numbers may include the maximum retransmissions numbers associated with a specific user in communication with the base station. Further, at least one of the first maximum retransmission numbers of a particular user may be reconfigured to a third predetermined value.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: April 15, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Chunmei Liu, Masoud Olfat
  • Patent number: 8693457
    Abstract: An apparatus and media are provided for more effectively utilizing modems in a WiMAX environment. The apparatus connects a computing device to a network-based information system through at least a first WiMAX modem that is located within the apparatus. A second WiMAX modem can be removably coupled to the apparatus so as to connect the first computing device to the network in combination with the first WiMAX modem. In the event the second WiMAX modem is removed, network connectivity provided by the first WiMAX modem is maintained.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 8, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Doug A. Olding, Warren B. Cope, Shane Robert Werner, Ahsan Habib, Arun Santharam
  • Patent number: 8681660
    Abstract: Systems and methods for detecting and mitigating interference between from a wireless time division duplex (TDD) communications device and a wireless frequency division duplex (FDD) communications device includes processing quality-indicator reports received from the FDD device to determine if the FDD device has experienced interference from the TDD device. Such interference may be mitigated by adjusting a downlink configuration of the FDD base station in communication with the FDD device. To detect and mitigate interference from an FDD device to a TDD device, it is determined if a monitored value of an operational parameter of the FDD device is within a fixed range of a maximum value of the operational parameter, and if so, a specific time interval or frequency of the FDD device is assigned for communication purposes. Similar interference detection and mitigation techniques may also be used for interference scenarios between two TDD systems including TDD devices.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: March 25, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Yang Xu, Michael Hart, Peter Gelbman, Herkole Sava
  • Patent number: 8681638
    Abstract: A method of operating a communication system comprises exchanging initial communications between a wireless communication device and a communication network over a wireless connection between the wireless communication device and a network access system and over a network connection between the wireless device and the communication network. The method further comprises, in response to a loss of the network connection due to a deterioration of the wireless connection, determining if a partial network entry process is possible to regain the connection, and if the partial network entry process is possible to regain the network connection, performing the partial network entry process. The method further comprises, in response to an improvement of the wireless connection and upon regaining the network connection, exchanging new communications between the wireless communication device and the communication network over the wireless connection and the network connection.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: March 25, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Chunmei Liu, Masoud Olfat, Feng Huang, Mohammad Hassan Partovi, David S. McGinniss
  • Patent number: 8682392
    Abstract: A base station includes multiple transmitter-receiver elements coupled to multiple antennas. The activation of additional baseband signal processing resources, dynamically mapped via a programmable digital interface module to a subset of the original transmitter-receiver sets in the base station to double capacity of the system or facilitate simultaneous operation of multiple air interface technologies with minimal or no hardware modifications to the base station or cell site. With a base station having four transmitter-receivers, the system transmits and receives the same signal on all transmitter-receivers to provide a 4×2 downlink and a 1×4 uplink. The system can be reconfigured by splitting the transmitter-receiver sets into two logically separate units. An additional base station modem resource is activated to double the capacity of the radio system or to implement a different communication protocol allowing transition between technologies.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: March 25, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Peter Gelbman, Durga Prasad Satapathy
  • Patent number: 8649282
    Abstract: In one or more embodiments, a system and method of managing network channel quality in a wireless communications network includes reporting a channel quality measurement from the particular user to a base station (BS) over an available CQICH, and determining a MCS based, at least in part, upon the channel quality measurement. If a threshold network CQICH capacity is reached during a subsequent data frame such that a CQICH is no longer available, MAC level messages are generated between the BS and the particular user to trigger reporting of signal quality information to the BS by the particular user. After the next CQICH cycle commences and if a CQICH is still unavailable, the signal quality information is continued to be provided via MAC level messages. Otherwise, a CQICH is reallocated for a particular user and channel quality measurement reporting is transitioned back to the CQICH.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: February 11, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Masoud Olfat
  • Publication number: 20140036837
    Abstract: In one or more embodiments, a system and method of managing network channel quality in a wireless communications network includes reporting a channel quality measurement from the particular user to a base station (BS) over an available CQICH, and determining a MCS based, at least in part, upon the channel quality measurement. If a threshold network CQICH capacity is reached during a subsequent data frame such that a CQICH is no longer available, MAC level messages are generated between the BS and the particular user to trigger reporting of signal quality information to the BS by the particular user. After the next CQICH cycle commences and if a CQICH is still unavailable, the signal quality information is continued to be provided via MAC level messages. Otherwise, a CQICH is reallocated for a particular user and channel quality measurement reporting is transitioned back to the CQICH.
    Type: Application
    Filed: October 9, 2013
    Publication date: February 6, 2014
    Applicant: CLEARWIRE IP HOLDINGS LLC
    Inventors: Sungki PARK, Masoud OLFAT
  • Patent number: 8644154
    Abstract: A wireless device is communicated with using a first throughput. A predicted location for the wireless device is determined. Based on the predicted location, a predicted maximum throughput at the predicted location is determined. Based on the predicted maximum throughput, a second throughput is determined. The wireless device is communicated with using the second throughput.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: February 4, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Daniel A. Vivanco, Esmail Hejazi Dinan, Hemanth Balaji Pawar, Howard Bishop Anderson, Vijay Rudraraju
  • Patent number: 8644301
    Abstract: Systems and methods for supporting E911 for VoIP mobile communications are provided. A mobile station formats a call setup message by including particular information in a header portion of the call setup message that is used by the wireless network to select an appropriate PSAP and route the call to the appropriate PSAP.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: February 4, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Arundhati Tamhankar, Michael Brothers, Stevan Klesper, Curt Jutzi, Kurt Christian Schmidt, Masud Kibria, Cathy Massey, Erin Boone
  • Publication number: 20140024373
    Abstract: Systems and methods of operating multimode 3G/4G communications devices in an overlapping 3G/4G coverage area (e.g., WiMAX or LTE/CDMA EvDO) include determining if a number associated with temporarily-disabled sectors of an available sector set of the multimode device while the device is operational with a 3G base station is at least equal to a threshold number. If the number is at least equal to the threshold number, a scan for a sector in the 4G network to handover the operation of the multimode device from the 3G base station associated with the 3G coverage to a 4G base station associated with the 4G coverage is initiated. A scan for a fixed period of time for a new available sector in the 3G network to be added in the available sector set may be initiated; and, if a new available sector is added to the sector set, it may be redetermined if the number associated with the temporarily-disabled sectors is at least equal to the threshold number, before initiating the scan for a sector in the 4G network.
    Type: Application
    Filed: March 11, 2013
    Publication date: January 23, 2014
    Applicant: Clearwire IP Holdings LLC
    Inventors: Hemanth Balaji PAWAR, Krishna D. Sitaram, Daniel Vivanco
  • Patent number: 8634423
    Abstract: Methods and media are provided for allowing WiMAX device users varying levels of Quality of Service (QoS) based on the network service provider ID (NSPID) present on the device. A user's authentication request can be routed based on the NSPID, thus ensuring certain prescribed QoS levels. The QoS level could be varied over time as requested by the user. Guarantee of the QoS levels can be accomplished by dedicating network resources, such as the number of servers, the quality of servers, or the bandwidth allocated. Utilizing the NSPID to route the user prior to authentication also improves latency time for user-authentication requests and improves traffic flow across the network by reducing the need to reroute.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: January 21, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Doug A. Olding, Warren B. Cope
  • Patent number: 8620322
    Abstract: A base station may decide to initiate a handover of a communication with a mobile station from a first wireless link to a new wireless link and identify one or more wireless links for the handover. For each identified wireless link, the base station may then determine a channel-quality metric, a wireless-link loading metric, and perhaps a coverage-area loading metric. In turn, the base station may then select the new wireless link based on the channel-quality metric and one or both of the wireless-link loading metric and the coverage-area loading metric. For example, the base station may apply a linear function that includes as variables the channel-quality metric and the wireless-link loading metric, and the base station may select the identified wireless link that best satisfies this function. The base station may then facilitate the handover of the communication from the first wireless link to the selected new wireless link.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: December 31, 2013
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Durga P. Satapathy
  • Patent number: 8621513
    Abstract: Systems, methods and media are provided for presenting a group of available broadcast channels utilizing a wireless network upon initiation of a channel-viewing graphical user interface (GUI). The group comprises channels that can be broadcast most efficiently to the mobile device. After initiating the channel-viewing GUI on the mobile device, requests are communicated to elements on the network to retrieve lists of currently broadcast channels in the area and currently viewed channels throughout the wireless network. A list also is retrieved of recently viewed channels on the mobile device. At least a portion of each list is then presented on the channel-viewing GUI. The lists can be sent by a first video media proxy (VMP) server and a broadcast management server (BMS).
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: December 31, 2013
    Assignee: Clearwire IP Holdings LLC
    Inventors: Yaojun Sun, Jing Gu, Lyle Bertz, Wei-Ming Lan
  • Patent number: 8614990
    Abstract: What is disclosed is a method of coordinating a handoff of a wireless communication device from a first access node to a second access node. The method includes monitoring a signal strength level at the wireless communication device for wireless communications transferred from each of the first access node and the second access node. The method also includes determining a loading factor of the first access node, a loading factor of the second access node, a mobility factor of the wireless communication device, and an application type of user communications between the wireless communication device and the first access node, and processing the loading factor of the first access node, the loading factor of the second access node, the mobility factor, and the application type to determine a handoff threshold.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: December 24, 2013
    Assignee: Clearwire IP Holdings LLC
    Inventors: Hetal J. Mistry, PinalKumari K. Tailor, Esmail Hejazi Dinan
  • Publication number: 20130337871
    Abstract: A system and method of a hybrid scheme of DL link adaptation in a network having mobile stations (MSs) in communication with a base station (BS). The system may include a mode decision module associated with the base station. The mode decision module may include one or more processors configured to select a first mode configuration for use during transmission of a first communication from the base station. The BS may receive first feedback information associated with the first communication, where the first feedback information includes a first mode recommendation and first channel information. Based on the first feedback information, the BS may generate a BS-derived mode configuration based on the first channel information and compare the first mode recommendation and the BS-derived mode configuration. Based on the comparison, the BS may determine a second mode configuration to use to configure a second communication.
    Type: Application
    Filed: June 19, 2013
    Publication date: December 19, 2013
    Applicant: Clearwire IP Holdings LLC
    Inventors: Sungki PARK, Durga Prasad Satapathy, Walter Rausch
  • Patent number: 8605586
    Abstract: Systems and methods of balancing traffic load in a wireless communication network include calculating a load metric for each of a plurality of users, wherein each of the plurality of users, in operation, are in communication with a first base station using an overloaded carrier associated with the first base station. Such load metric for each user may include a plurality of metric factors related at least to an associated communication link. Based on the calculated load metric, a transfer-deserving user from the plurality of users may be determined. The transfer-deserving user may be associated with a highest value of an associated calculated load metric. For load balancing at the first base station, the associated communication link of the transfer-deserving user may be transferred from the overloaded carrier to a target carrier, wherein the target carrier may be associated with either the first base station or a second base station.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: December 10, 2013
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Durga Prasad Satapathy