Patents Assigned to Clearwire IP Holdings, LLC
  • Patent number: 9025505
    Abstract: In various embodiments, a system, network node, and method of providing voice communications in a wireless packet communications system includes registering a communications path between a gateway (GW) and a base station (BS); establishing a real-time service flow in the BS; activating the real-time service flow over an air interface between the BS and a terminal device; requesting, by the terminal device, that zero bandwidth be allocated by the BS to the activated real-time service flow in the absence of voice traffic to or from the terminal device; requesting, by the terminal device, that sufficient bandwidth be allocated by the BS to the activated real-time service flow when voice traffic to or from the terminal device is detected by the terminal device; and transmitting and/or receiving the voice traffic over the registered communications path via the activated real-time service flow.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: May 5, 2015
    Assignee: Clearwire IP Holdings LLC
    Inventors: Durga Prasad Satapathy, Richard Martin Cane, Dhaval Dipak Mehta
  • Patent number: 9014698
    Abstract: Systems and methods for performing handover cancellation in a wireless communication system are provided. According to an aspect of the invention, a mobile station requests bandwidth from a serving base station for the mobile station to send a handover cancellation request message to the serving base station. The mobile station then receives an allocation of the requested bandwidth from the serving base station, and sends the handover cancellation request message to the serving base station via the allocated bandwidth. The mobile station requests the bandwidth after a disconnect time and before a resource retain time.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: April 21, 2015
    Assignee: Clearwire IP Holdings LLC
    Inventors: Chunmei Liu, Masoud Olfat
  • Patent number: 9001817
    Abstract: A method of operating a communication system comprises sending a frame by an access node to a wireless device where the frame comprises a packet. A counter is initialized and a timer for each frame is initiated. The method continues with the access node determining if a response associated with the packet is received before the expiration of the timer. If the response is received prior to the expiration of the timer, the counter and the timer are reset. If a response is not received prior to the expiration of the timer, the counter is incremented. Upon the counter meeting a criteria of a certain quantity of lost packets, the access node performs a synchronization process.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: April 7, 2015
    Assignee: Clearwire IP Holdings LLC
    Inventors: Chunmei Liu, Masoud Olfat, Nagi Mansour
  • Patent number: 8989804
    Abstract: A multi-modal wireless communication device contains multiple radios for communication with wireless networks utilizing different communication protocols. When a communication link with a first base station using a first communication protocol is broken, and a communication link established with a second base station, the mobile device stores the communication data related to the prior communication link and stores it in association with the current communication link. At some future time, the mobile device may establish a communication link with the second base station. The mobile device can check the stored data to see if there is a an alternative network connection in the proximity of the current connection. If so, the mobile device may activate the radio for communication with first base station and actively attempt to establish a communication link based on the proximity data recalled from storage in the mobile device.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: March 24, 2015
    Assignee: Clearwire IP Holdings LLC
    Inventors: Curtis E. Jutzi, Bhupal De
  • Publication number: 20150019689
    Abstract: An apparatus, methods, and computer program products are described which transfer files/data from one system to other. Source and target system can be external trading partners or internal enterprise applications. File transfers can be scaled horizontally or vertically, depending on the requirement without any server or application downtime. File transfers can also be managed and executed in different server/infrastructure zones as per the different regulatory requirements (e.g., PCI, CPNI, etc.) or security sensitivity using service demarcation. File transfer platforms can be patched or upgraded by isolating one or multiple components at a time without disrupting running production processes. Auto-recovery component can handle file transfer failures automatically without any manual intervention making the system self-healing. Periodic endpoint scanning is added to the platform to proactively scan and detect connectivity issues with trading partners or internal systems involved in file transfers.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 15, 2015
    Applicant: Clearwire IP Holdings LLC
    Inventors: Anurag SINGH, Bramh GUPTA, Frederick YATZECK, Somesh DIXIT, Srinivas MANDADAPU, Srinivasa VALLAMKONDA
  • Patent number: 8908571
    Abstract: Systems and methods for detecting and mitigating interference between from a first wireless time division duplex (TDD) communications device and a second wireless TDD communications device includes processing quality-indicator reports received from the first TDD device to determine if reception at the first TDD device has experienced interference from the second TDD device. Such interference at the first TDD device may indicate that the first TDD device may also cause interference to reception at the second TDD device. Accordingly, to mitigate the possible interference from the first TDD device, an uplink configuration of the first TDD base station may be adjusted. The adjustment of the uplink configuration may include configuring reception of data packets at the first TDD base station from the first TDD device in accordance with an interference-free time interval, an unprotected time interval, or a specific portion of an associated frequency band.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: December 9, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Michael Hart, Yang Xu, Peter Gelbman, Herkole Sava
  • Patent number: 8908592
    Abstract: In various embodiments, a system and method for providing uplink (UL) power control for a wireless mobile station (MS) includes, after transmission of an unanswered bandwidth request by the MS, incrementally boosting an UL transmit power of one or more subsequent bandwidth requests by the MS to a boosted UL power level at which UL bandwidth is allocated to the MS by the BS; selectively reporting the boosted UL power level to the BS immediately after the UL transmit power has been boosted; and selectively controlling the boosted UL power level by the BS responsive to the boosted UL power level reported to the BS. A MS is configured to carry out the UL power control method and a BS is configured to generate MS UL power control commands based, at least in part, upon the UL power level reported to the BS.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 9, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Chunmei Liu, Dhaval Dipak Mehta, Sungki Park, Masoud Olfat, Durga Prasad Satapathy
  • Patent number: 8891442
    Abstract: A system, computer-readable medium, and method of operating a dual-mode WiMAX and CDMA communications device capable of operating in a CDMA mode or a WiMAX mode includes receiving a first base station (BS) location message from the BS and storing the received location as a current BS location. The BS location is compared to stored region coordinates for the different regions, and the comparison is used to determine a particular region in which the dual-mode device is currently located. Analysis determines whether a WiMAX market is located within the particular region. If no WiMAX markets are located, the dual-mode device is operated in the CDMA mode. If one or more WiMAX markets are located within the particular region, a determination is made as to whether the BS location is within a WiMAX market and, if so, the dual-mode device is placed in a WiMAX mode of operation. Battery power is conserved by avoiding WiMAX transmission when WiMAX service is not available at the current BS location.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 18, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventor: Wei-Ming Lan
  • Patent number: 8879386
    Abstract: In various embodiments, a method, computer-readable storage medium, and apparatus for scheduling prioritized best effort (BE) service flows through a wireless network base station includes a controller coupled to a memory. If any one of a plurality of BE service flows are congested, a minimum reserved traffic rate (MRTR) algorithm is used by the controller to ensure that at least a highest priority BE service flow is maintained at least at an associated MRTR. If none of the plurality of BE service flows are congested, a maximum sustained traffic rate (MSTR) algorithm is used by the controller to enable the highest priority BE service flow to be set to at least at an associated MSTR before lower priority service flows are increased. If none of the plurality of BE service flows are congested and each service flow is at their associated MSTR, the controller is configured to distribute any excess bandwidth to each service flow in accordance with an initial set of priority BE traffic flow ratios.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: November 4, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Durga Prasad Satapathy, Sungki Park
  • Patent number: 8874782
    Abstract: A system and method are provided for determining whether a transaction between a subscriber and a merchant website requires downloading and/or streaming digital objects. In response to a determination that the transaction does require downloading and/or streaming of digital objects, a subscriber is provided with various options for delaying such downloading and/or streaming in return for incentives of varying value.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: October 28, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventor: Charles B. Lobsenz
  • Patent number: 8873502
    Abstract: First and second indicators of a first available amount of an air-interface resources associated with a first and second channel, respectively, is received. A request for an allocation of an amount of the air-interface resource is received. Based on the request for the allocation, first and second ranking values associated with the first and second channels, respectively are determined. The first and second ranking values are selected such that the efficient allocations receive higher ranks. Based on the first ranking value and the second ranking value, the first frequency band is selected to provide the allocation of the amount of the air-interface resource.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: October 28, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Daniel A. Vivanco, Esmail Hejazi Dinan, Vijay Rudraraju, Howard Bishop Anderson, Hemanth Balaji Pawar
  • Patent number: 8842525
    Abstract: The present document describes a system and method for extending a wireless communication coverage area of a cellular wireless base station transceiver (BTS) to enable control signaling and identification of mobile stations not currently within a coverage area of an existing beamform antenna pattern of the BTS, for example. A cellular BTS may scan through dead zones of coverage areas provided by the BTS to identify mobile stations not within the coverage area of the BTS, but within a possible service area of the BTS. In addition, the BTS may receive a relaying control signal from a mobile station located within the coverage area of the BTS, and the signal will indicate a location of another mobile station not within the coverage area of the BTS but within the service area of the BTS. In either example, the BTS may attempt to provide a coverage area to the mobile station located in the control signaling dead zone, for example.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: September 23, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: John Yongchae Kim, Joe Martire, Thuy Thomas Tran
  • Patent number: 8830985
    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 25, 2012
    Date of Patent: September 9, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Yang Xu, Michael Hart, Peter Gelbman, Herkole Sava
  • Patent number: 8825865
    Abstract: A system and methodology for network planning in which a software based tool provides network engineers with the capability to more precisely plan for traffic loading within the network on a cell site by cell site basis. Thus for each cell site, variations in geographic location, device mix, historical usage patterns and other factors are taken into account to allow for more accurate network planning and for more efficient use of capital. Cell sites with a higher traffic profile based upon historic device mix and usage patterns will be associated with lower OSF values thus enhancing the user experience for a device user in communication with that cell site. On the other hand, for cell sites with a lesser traffic profile, a higher OSF value is ascribed thus allowing for capital to be deployed elsewhere while still maintaining a positive user experience for users relying on that cell site.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: September 2, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Howard Anderson, Hemanth Pawar, Hetal Mistry
  • Patent number: 8811925
    Abstract: In various embodiments, a system and method for improving a noise figure (NF) of a time division duplex (TDD) communications system includes a pre-amplified antenna unit having a plurality of antennas and associated low-noise amplifiers (LNA). Each of the associated LNA's is arranged to receive signals from a phase-matched pair of antennas selected from the plurality of antennas. For each of the phase-matched antenna pairs, a variable negative gain circuit may be coupled to a TDD signal output of the associated LNA such that a remote radio head (RRH) may be suitably coupled to an output of the variable gain circuit. The variable gain circuit is configured to provide a negative gain to the TDD signal appropriate to ensure that a dynamic range of the RRH is not reduced from a desired dynamic range due to excess gain provided by the LNA.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: August 19, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Durga P. Satapathy, Walter Rausch
  • Patent number: 8805379
    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 a loading condition of the 3G and 4G base stations. If the 3G and 4G base stations are lightly loaded, one or more 4G Channel Quality Indicators (CQI) are compared with one or more corresponding 3G Data Rate Control (DRC) indices to determine which of the 3G and 4G networks allows a higher data throughput. The dual mode communications device is handed off to a 4G base station associated with the 4G coverage if the 4G network allows the higher data throughput; otherwise, the dual mode communications device is handed off to a 3G base station. User priorities, application categories, and/or MIMO and diversity modes may be used to determine handoff if the base stations are more than lightly loaded.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: August 12, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Swati Tiwari, Hemanth Balaji Pawar, Esmail H. Dinan, Krishna Sitaram, Jong-Hak Jung
  • Patent number: 8804688
    Abstract: A method for varying pilot sub-carrier density in OFDMA communications is described. The method comprises calculating channel quality from sub-carriers; determining whether the channel quality is outside a threshold range; selecting a different pilot sub-carrier density for a sub-zone based on the value of the channel quality when the channel quality is outside the threshold range; and setting the sub-zone to the different pilot sub-carrier density. A system for using sub-zones with different pilot sub-carrier densities in OFDMA communications is also described.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: August 12, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Masoud Olfat
  • Patent number: 8797945
    Abstract: A system and method a hybrid scheme of mode decision in a network having a plurality of mobile stations communicably coupled to a base station 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, receive first feedback information comprising a first mode recommendation and first channel information, identify a first system state of the first communication based at least in part on the first condition information, determine whether to use the first mode recommendation configuration based at least in part on the first system state, and configure the second communication using a second mode configuration based on the determination.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: August 5, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Masoud Olfat, Dhaval Dipak Mehta
  • Patent number: 8768358
    Abstract: Systems and methods of uplink bandwidth allocation for a handoff are provided. A mobile station can transmit a handoff request message to a serving base station. The mobile station and the target base station can exchange synchronization messages and the mobile station can then subsequently receive an unsolicited allocation of a number of uplink sub-channels from the base station.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: July 1, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Nagi A. Mansour, Esmail Dinan, Chunmei Liu
  • Patent number: 8756470
    Abstract: A system and method of increasing data throughput in a wireless communications network between a base station (BS) and one or more mobile stations (MS) includes establishing a service flow (SF) and initially enabling a hybrid automated repeat request (HARQ) protocol; determining, at a particular time, the measure of quality of the communications channel; comparing the determined measure of quality with a predetermined channel quality threshold; and selectively disabling the HARQ protocol based upon a first comparison result while continuing the SF between the BS and MS. In other aspects, after selectively disabling the HARQ protocol, the method further includes determining that the time-varying measure of quality of the communications channel has deteriorated below the predetermined channel quality threshold; and selectively re-enabling the HARQ protocol in the established SF.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: June 17, 2014
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Masoud Olfat, Dhaval Dipak Mehta