Patents Assigned to NextWave Broadband Inc.
  • Publication number: 20130065623
    Abstract: Methods and apparatus for reducing transmit emissions are described herein. The transmit out of band emissions in an adjacent band can be reduced while complying with existing wireless communication standards through utilization of one or more of reduced transmit bandwidth, transmit operating band offset, and channel index remapping. The transceiver can support a receive operating band substantially adjacent to a band edge. The transmit operating band can be offset from an adjacent frequency band, and can use a narrower operating band than is supported by the receiver. The transmit baseband signal can have a reduced bandwidth to reduce the amount of noise. The frequency offset can introduce a larger transition band between the transmit operating band edges and the adjacent frequency band of interest. The transceiver can remap channel assignments to compensate for the frequency offset such that the frequency offset introduced in the transmitter is transparent to channel allocation.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 14, 2013
    Applicant: NEXTWAVE BROADBAND INC.
    Inventors: Srikanth Gummadi, Lei Wang, Walid Hosseini, Todd Sutton
  • Publication number: 20100061333
    Abstract: A configuration for downlink signals in a wireless communication system, methods of configuring the downlink signals, apparatus for generating the downlink signals, and apparatus for receiving and processing the downlink signals are described herein. Downlink signals in a wireless communication system are reconfigured in series of frames, with each frame carrying a preamble that provides fast cell search and system acquisition. In particular, the preamble includes a primary preamble and a secondary preamble, where the primary preamble is common to all sectors in a base station and all base stations in a system and the secondary preamble is effectively unique to each base station, and may be further distinguished based on a sector basis.
    Type: Application
    Filed: March 9, 2009
    Publication date: March 11, 2010
    Applicant: NextWave Broadband Inc.
    Inventors: Gene Marsh, Srikanth Gummadi, William Burchill, Michael Wengler
  • Publication number: 20100040178
    Abstract: Methods and apparatus for implementing a wireless communication transceiver having receive path performance diversity. The transceiver implements a plurality of signal paths that can be configured as diversity receive paths. Each of the plurality of signal paths includes a distinct RF filter. Each RF filter can be configured to provide a distinct jammer rejection profile. Each receive path also includes a jammer detector, that can be a multiple level jammer detector. Each jammer detector operates to control a level of processing gain applied to the signals in its receive path. The multiple gain scaled receive signals can be combined in a coherent combiner before being routed for further processing.
    Type: Application
    Filed: March 17, 2009
    Publication date: February 18, 2010
    Applicant: NextWave Broadband Inc.
    Inventors: Todd Sutton, James Stump, Hardik Patel, Laddan Hashemian
  • Publication number: 20100037105
    Abstract: In a system in which both the media access layer and the physical layer use error control, information from the physical layer error control process is used to provide surrogate media access layer error control messaging. In one aspect, the physical layer error control state machine in the transmitting station sends the surrogate message internally to the media access layer error control state machine based on physical layer error control results, thereby eliminating a need to transmit the error control messaging from the media access layer error control state machine of the receiving station over the wireless link.
    Type: Application
    Filed: June 26, 2009
    Publication date: February 11, 2010
    Applicant: NextWave Broadband Inc.
    Inventor: Yair Bourlas
  • Publication number: 20100037112
    Abstract: A mechanism is provided to allow an HARQ retransmission to more closely match the receiver's need for energy with the additional energy sent over the wireless link. In one aspect, the receiver sends the transmitter qualitative feedback which indicates to the transmitter an approximate amount of additional energy that the receiver needs to successfully decode the transmission.
    Type: Application
    Filed: July 2, 2009
    Publication date: February 11, 2010
    Applicant: NextWave Broadband Inc.
    Inventor: Peter Graumann
  • Publication number: 20100009707
    Abstract: A base station (BTS) may instruct a client station (CS) to transmit sounding signals that the BTS may analyze to determine what adjustments, such as power, time, and/or frequency adjustment(s) should be made by the CS. The BTS may control when and how the sounding signals are sent by the CS. This helps reduce the possibility of adjustment signals transmitted by two or more CSs colliding. Thus, sounding signals transmitted by the CS in response to a request by the BTS can be received by the BTS with higher a probability of success. This permits the BTS to more accurately characterize the channel and to provide better adjustment of power level, frequency offset, and/or timing offset for more optimal communication. Such techniques can be used to reduce bit error rates and to improve the overall signal to noise ratio encountered by the system.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 14, 2010
    Applicant: NextWave Broadband Inc.
    Inventor: Ron Porat
  • Publication number: 20090274073
    Abstract: Methods and apparatus for control of uplink resource allocation and undesirable transmit emissions from a wireless transceiver in a frequency division duplex (FDD) or hybrid frequency division duplex (H-FDD) wireless system. The bandwidths spanned by the receive band and the transmit band may be symmetric or asymmetric. Additionally, each of the receive band or the transmit band may be contiguous or may be an aggregate of multiple discontinuous frequency bands. The wireless transceiver can control undesirable transmit emissions from occurring in a predetermined frequency band by using an offset LO frequency and restricting transmit signals to frequencies away from the predetermined frequency band. Alternatively, in an asymmetric FDD system where a receive band is larger than a transmit band, the transceiver can limit transmit signal allocation to the transmit band. The transceiver can further limit out of band transmit emissions using an offset LO frequency.
    Type: Application
    Filed: May 2, 2008
    Publication date: November 5, 2009
    Applicant: NextWave Broadband Inc.
    Inventor: Todd R. Sutton
  • Publication number: 20090264142
    Abstract: Methods and apparatus are described for mitigating intercell interference in wireless communication systems utilizing substantially the same operating frequency band across multiple neighboring coverage areas. The operating frequency band may be shared across multiple neighboring or otherwise adjacent cells, such as in a frequency reuse one configuration. The wireless communication system can synchronize one or more resource allocation regions or zones across the multiple base stations, and can coordinate a permutation type within each resource allocation zone. The base stations can coordinate a pilot configuration in each of a plurality of coordinated resource allocation regions. Subscriber stations can be assigned resources in a coordinated resource allocation region based on interference levels. A subscriber station can determine a channel estimate for each of multiple base stations in the coordinated resource allocation region to mitigate interference.
    Type: Application
    Filed: December 3, 2008
    Publication date: October 22, 2009
    Applicant: NextWave Broadband Inc.
    Inventors: Hari Sankar, Ron Porat, Danjie Pan, Wee Peng Goh, Srikanth Gummadi, Lei Wang
  • Publication number: 20090180413
    Abstract: Methods and apparatus for power reduction in a wireless device having multiple receive paths are described herein. A wireless device configured for any one of multiple operating modes may utilize multiple receive signal paths to improve the receive signal quality in each of the operating modes. The wireless device may be configured to dynamically reconfigure a modulation coding scheme to compensate for varying signal qualities in some modes. The wireless receiver may be configured in other operating modes where the modulation coding scheme is fixed for a duration of the operating mode. The wireless device can conserve power when it is operating in a mode supporting a constant modulation coding scheme. The wireless device can determine a signal metric value of the received signals and can selectively power down or deactivate a receive signal path based on the value of the signal metric.
    Type: Application
    Filed: January 16, 2008
    Publication date: July 16, 2009
    Applicant: NextWave Broadband Inc.
    Inventor: Todd R. Sutton
  • Publication number: 20090116427
    Abstract: An advanced technology frame structure is described herein. The advanced technology frame structure can enhance a first technology frame structure in dimensions of time, frequency, or a combination of time and frequency. A second technology frame structure time division multiplexes second technology subframes with the first technology downlink and uplink subframes. The first technology downlink subframe can be divided into a first technology downlink subframe and one or more second technology downlink subframes. Similarly, the first technology uplink subframe can be divided into a first uplink subframe and one or more second technology uplink subframes. These principles can be expanded upon and can be applied in many communication systems.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 7, 2009
    Applicant: NextWave Broadband Inc.
    Inventors: Roger Marks, Lei Wang, Yair Bourlas, Srikanth Gummadi, Kenneth Stanwood, Ron Porat
  • Patent number: 7526248
    Abstract: An extended wireless communication system allows a subscriber station which has an unacceptable (weak or inoperative) wireless link to a base transmitter station to communicate with the network via a wire connection to a second subscriber station which has a strong wireless link to the network. A first subscriber station which has an unacceptable first wireless link to a base station of the network uses a second wireless subscriber station which has a strong or acceptable second wireless link to the local base station to relay data back and forth between the first subscriber station and the network. The first and second stations are configured to send data to and from the first station via the second wireless link, the second station, and an existing wire connection between the first and second subscriber stations.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: April 28, 2009
    Assignee: NextWave Broadband, Inc.
    Inventors: Adam Gould, Michael S. Librizzi, Kenneth L. Stanwood
  • Publication number: 20090081962
    Abstract: Methods and apparatus permitting the coexistence of multiple communication links to distinct wireless systems in a client device are disclosed. A wireless device can interface with both a primary communications system and at least one distinct communications system by managing the coexistence of active communications with the multiple communication systems. The wireless device can initially configure communications with the primary communications system for dynamically reconfigurable time multiplexed operation having scheduled periods of inactivity. The wireless device can determine timing and scheduling of communications with the distinct communications systems and can schedule the communications with the distinct communications systems during periods of inactivity in the primary communications system. The periods of inactivity may be limited to the scheduled periods of inactivity or can include unscheduled periods of inactivity occurring during active periods of the time multiplexed operation.
    Type: Application
    Filed: May 30, 2008
    Publication date: March 26, 2009
    Applicant: NextWave Broadband Inc.
    Inventor: Katayoun Sohrabi
  • Publication number: 20090075667
    Abstract: Methods and apparatus for communicating and utilizing persistent allocation of uplink resources are described herein. A base station can allocate persistent uplink resources to a client station, such that the resource allocation remains active for future uplink frames without the client station repeating a request for uplink resources or the base station expressly communicating the uplink resource allocation. A client station can request a persistent uplink resource allocation when wireless channel conditions are fairly consistent and not varying and the required uplink resources are predictably periodic and fixed in size. The base station can verify that the uplink resource request meets the criteria for persistent allocation and can allocate persistent uplink resources in a dedicated information element of an uplink resource map that is transmitted to the user. The resources allocated remain allocated to the client station in each frame satisfying a predetermined periodicity until deallocated.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 19, 2009
    Applicant: NextWave Broadband Inc.
    Inventor: Yair Bourlas
  • Publication number: 20090070650
    Abstract: Methods and apparatus for communicating and utilizing persistent allocation of resources are described herein. A base station can allocate persistent resources to a client station, and can associate the client station or persistent resource allocation with a particular shared NACK channel. The base station can monitor the NACK channel for a NACK indicating a map error. The base station can also monitor the resource allocation to implicitly determine a map error. The base station can resend one or more persistent resource allocation information elements in response to the NACK or implicit error determination. A client station having a persistent resource allocation can monitor persistent resource allocation information elements in map messages and can indicate failure to receive a persistent resource allocation information element in a NACK message on a preassigned share NACK channel.
    Type: Application
    Filed: September 4, 2008
    Publication date: March 12, 2009
    Applicant: NextWave Broadband Inc.
    Inventors: Yair Bourlas, Kirupairaj Asirvatham
  • Publication number: 20090067448
    Abstract: For an example embodiment, a method for a communication device operating in a synchronous communication system is described. The method includes performing a listen-before-talk (LBT) procedure prior to the start of a downlink subframe of a synchronous frame and determining if a transmission from another communication device of another communication system is detected during the LBT procedure. In the case that a transmission is detected during the LBT procedure, the communication device refrains from transmitting during the downlink subframe. In the case that a transmission is not detected during the LBT procedure, the communication device transmits during the downlink subframe.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 12, 2009
    Applicant: NextWave Broadband, Inc.
    Inventors: Kenneth L. Stanwood, Paul W. Piggin, Lei Wang, Brian D. Petry, Roger Marks, Yair Bourlas
  • Publication number: 20080259849
    Abstract: A system including a buffer to receive and store a stream of content data. A controller module may be configured to determine the macro-diversity region size based on a set of pre-selected configuration parameters including an incoming rate of the content data and to allocate at least a portion of the content data to a macro-diversity region, to monitor an amount of the content data in the buffer in accordance with the set of pre-selected configuration parameters including an incoming rate of the content data to determine whether the amount of content data falls into or out of a target range defined by a low-end value and a high-end value and to adjust the size of the macro-diversity region by one or more increments in response to changes in the amount of the content data in accordance with the target range.
    Type: Application
    Filed: April 17, 2008
    Publication date: October 23, 2008
    Applicant: NEXTWAVE BROADBAND, INC.
    Inventors: Dennis P. Connors, Huei-jiun Ju, Sina Zahedi, Neeraj Poojary
  • Publication number: 20080259905
    Abstract: Methods, apparatus and systems for generating and synchronizing a macro-diversity region transmitted by base stations in a network includes a receiving module configured to receive a plurality of packets of content data. A controller module coupled to the receiving module and configured to generate a macro-diversity region data that includes at least one packet of the plurality of packets of content data, and to generate a time reference and frame offset information to indicate an offset from the time reference and to further identify a second base station transmission frame that will include the second macro-diversity region data. A communication module to communicate a macro-diversity region message that includes the macro-diversity region data and the macro-diversity region control information to a plurality of base stations, configured to synchronize the transmission of the macro-diversity region data at the plurality of base stations.
    Type: Application
    Filed: April 16, 2008
    Publication date: October 23, 2008
    Applicant: NEXTWAVE BROADBAND, INC.
    Inventors: Dennis P. Connors, Huei-Jiun Ju, Keerthi S. Govind, Sina Zahedi
  • Publication number: 20080253320
    Abstract: Enhanced frame preambles facilitate co-channel co-existence in a wireless communication environment by having at least one preamble characteristic that connotes channel-sharing information regarding the wireless communication environment. In an exemplary embodiment, a downlink subframe is received in one or more wireless communication signals in a wireless communication environment. A preamble is detected in the downlink subframe, and at least one characteristic of the preamble is ascertained. Channel-sharing information for the wireless communication environment is determined based upon the at least one characteristic of the preamble. In another exemplary embodiment, a channel is scanned to detect secondary preambles being transmitted on the channel. A current preamble configuration, including a permutation of preamble location and preamble content corresponding to the secondary preambles, is determined, which connote channel-sharing information.
    Type: Application
    Filed: October 31, 2007
    Publication date: October 16, 2008
    Applicant: NextWave Broadband Inc.
    Inventors: Paul W. Piggin, Srikanth Gummadi, Ron Porat, Kenneth L. Stanwood
  • Publication number: 20080233945
    Abstract: Methods and apparatus for identifying a subscriber station which is in motion, determining a mobility metric indicative of a level of mobility of the subscriber station and varying or updating one or more operating parameters based on the mobility metric. An apparatus can determine a measure of mobility based on one or a combination of a plurality of factors, such as variations in signal strength, variations in a channel estimate, or variations in phase or frequency of a particular signal or signal component. The one or more measures of mobility can be combined to form a single measure of mobility, the measure of mobility can be quantized to a predetermined number of mobility levels and one or more operating parameters can be varied or adjusted based on the mobility level.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 25, 2008
    Applicant: NextWave Broadband Inc.
    Inventors: Srikanth Gummadi, Ron Porat, Todd R. Sutton
  • Publication number: 20080233958
    Abstract: In a wireless communication system, a mobility factor is used to influence handoff. If a subscriber station has been in a low mobility state for some period of time, the system may handoff operation from a first service type to a second service type. If the mobility factor indicates that the subscriber station is moving, the system may handoff operation from the second service type back to the first service type.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 25, 2008
    Applicant: NextWave Broadband Inc.
    Inventors: Barry R. Robbins, Todd R. Sutton