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| Number | Title | Issue Date |
| 8175120 | Minimal maintenance link to support synchronization Multiple field units in a CDMA system are synchronized for communication with a base station using a shared forward and reverse link channel. Each field unit is assigned a time slot in a forward link channel to receive messages from the base station. Likewise, each ... | 05/08/2012 |
| 8139546 | System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system A subscriber access unit includes a transceiver for providing wireless communication of digital signals. The digital signals are communicated to a base station using at least one radio frequency (RF) channel via Code Division Multiple Access (CDMA) modulated radio s... | 03/20/2012 |
| 8134980 | Transmittal of heartbeat signal at a lower level than heartbeat request A communication system, such as a wireless CDMA system, detects markers with fewer errors by having field units transmit the markers at different power levels (e.g., 9 dB for one marker and 11 dB for another marker). The difference in power levels of the markers all... | 03/13/2012 |
| 8085665 | Automatic reverse channel assignment in a two-way TDM communication system To minimize overhead in the allocation of channels, forward and reverse link time slots are automatically assigned in pairs. In particular, rather than requiring a separate process for allocating reverse link channels for the sending of acknowledgment messages in re... | 12/27/2011 |
| 8072958 | Reverse link pilot integrated with block codes A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to out... | 12/06/2011 |
| 8072944 | Staggering forward and reverse wireless channel allocation timing An apparatus and method for staggering forward and reverse channel time slot allocation in a wireless communication allows a wireless communication unit, such as a base station processor or a subscriber access unit, to transmit a return message in less than a full t... | 12/06/2011 |
| 8068474 | Variable rate coding for enabling high performance communication A protocol for optimizing the use of coded transmissions such as over wireless links. In this technique, interframes are split into segments selected to be an optimum size according to transmission characteristics of the radio channel. The inverse process is applied... | 11/29/2011 |
| 8045990 | Maintenance of channel usage in a wireless communication system Data is accessed from a network via a wireless communication link. A determination is made as to whether payload data has been received from a subscriber's terminal. If so, then a request is sent for a first set of traffic channels, and the payload data is transmitt... | 10/25/2011 |
| 8045536 | Forward error correction scheme for high rate data exchange in a wireless system A transmitter/receiver system for high data transfer in a wireless communication system includes a physical layer processor that comprises an FEC coder, a demultiplexer and a plurality of modem processors. The FEC coder applies error correction codes to the high dat... | 10/25/2011 |
| 8023913 | Master-slave local oscillator porting between radio integrated circuits A technique to share a local oscillator signal between two radio frequency integrated circuits (RFICs). The local oscillator signal generated internally by one RFIC is ported to the other RFIC for use in transmit or receive operation. The local oscillator signal tha... | 09/20/2011 |
| 7944845 | Application specific traffic optimization in a wireless link A packet data system such as a TCP/IP network transmits packets containing a variety of data types along links in the network. Packets are transmitted in a stream between nodes interconnected by the links, which conform to a transport layer protocol such as TCP, UDP... | 05/17/2011 |
| 7937061 | Signal interfacing techniques to simplify integrated circuit radio designs A signal interfacing technique for connecting signals between a signal processing device and a MIMO radio integrated circuit (IC) involving multiplexing two or more signals on a connection pin between the radio IC and a signal processing device. According to one tec... | 05/03/2011 |
| 7933249 | Grade of service and fairness policy for bandwidth reservation system A scheme for assigning priority levels to users based upon a history of their request for access to the resources. If a user has, over a historical period of time, made fewer demands than a stated amount, that user is given a higher priority than a user who has made... | 04/26/2011 |
| 7916772 | Method for searching pilot signals to synchronize a CDMA receiver with an associated transmitter A method for synchronizing a CDMA receiver to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360° reception angle pattern (i.e., an omni-directional pattern) and a fixed recept... | 03/29/2011 |
| 7912026 | Throughput in multi-rate wireless networks using variable-length packets and other techniques In a wireless communication network having a plurality of devices operating at different data rates that contend for access to the network, an apparatus is provided that assigns network access parameters so as to control throughput on the network. ... | 03/22/2011 |
| 7911993 | Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure Method and apparatus for base stations and subscriber units allows soft handoff of a CDMA reverse link utilizing an orthogonal channel structure. Subscriber units transmit an orthogonally coded signal over a reverse link to the base stations. A given base station pr... | 03/22/2011 |
| 7899414 | Control of power amplifiers in devices using transmit beamforming A radio transmitter and method controls efficiency of each of a plurality of power amplifiers that amplify a corresponding one of a plurality of radio frequency signals for a beamforming transmission by a corresponding one of a plurality of antennas. Each of the plu... | 03/01/2011 |
| 7894475 | Two tier hi-speed wireless communication link A system and method for communicating between a plurality of remote transceivers and a network is discussed including multiple types of serially-connected communication links, upon which data flows are established to communicate information between the remote transc... | 02/22/2011 |
| 7889702 | Time-slotted data packets with a preamble An illustrative embodiment of the present invention supports the transmission of data to a user on an as-needed basis over multiple allocated data channels. Data packets are transmitted in time-slots of the allocated data channels to corresponding target receivers w... | 02/15/2011 |
| 7881674 | System and method for antenna diversity using equal power joint maximal ratio combining An equal gain composite beamforming technique which includes the constraint that the power of the signal output by each antenna is the same, and is equal to the total power of the transmit signal divided by the number N of transmit antennas from which the signal is ... | 02/01/2011 |
| 7873365 | Optimal load-based wireless session context transfer A subscriber access unit for transferring session context in wireless communication is disclosed. The access unit contains first context establishing circuitry for establishing a first wireless session context associated with a first wireless coverage area; locating... | 01/18/2011 |
| 7869778 | Master-slave local oscillator porting between radio integrated circuits A technique to share a local oscillator signal between two radio frequency integrated circuits (RFICs). The local oscillator signal generated internally by one RFIC is ported to the other RFIC for use in transmit or receive operation. The local oscillator signal tha... | 01/11/2011 |
| 7843884 | Achieving PPP mobility via the mobile IP infrastructure A method and system is provided for transmitting information from a mobile computer to a server utilizing point-to-point protocol (PPP). The system enables a PPP session to be maintained between a mobile user device and a PPP termination device. A Mobile IP address ... | 11/30/2010 |
| 7826437 | Variable rate coding for enabling high performance communication A protocol for optimizing the use of coded transmissions such as over wireless links. In this technique, interframes are split into segments selected to be an optimum size according to transmission characteristics of the radio channel. The inverse process is applied... | 11/02/2010 |
| 7701905 | Employing simulated acknowledgment signals for efficient handoffs in cellular packet networks An improved arrangement is described for maintaining throughput of date packets over a cellular packet network from an Internet server to an end user machine during handoff of a mobile subscriber unit from a first base station to a second base station. The end user ... | 04/20/2010 |
| 7701903 | Power control protocol for highly variable data rate reverse link of a wireless communication system A technique for implementing closed loop power control in a wireless system using a modulation that requires synchronization over the radio channel, which dynamically assigns coded channels on a demand basis. The technique maintains a proper power level, even when n... | 04/20/2010 |
| 7696943 | Low cost multiple pattern antenna for use with multiple receiver systems An antenna assembly includes at least two active or main radiating omni-directional antenna elements arranged with at least one beam control or passive antenna element used as a reflector. The beam control antenna element(s) may have multiple reactance elements that... | 04/13/2010 |
| 7676837 | Firewall protection for wireless users In a computer telecommunications network, firewalls protect a machine or network from undesired message transmissions. In the case of a firewall employed on a user side of the wireless link, a message rejected by the firewall has already consumed the wireless resour... | 03/09/2010 |
| 7672284 | Throughput in multi-rate wireless networks using variable-length packets and other techniques In a wireless communication network having a plurality of devices operating at different data rates that contend for access to the network, a method is provided that assigns network access parameters to one or more of the devices so as to control throughput on the n... | 03/02/2010 |
| 7672241 | Link-aware transmission control protocol In a TCP/IP network, congestion control techniques such as slow start and congestion avoidance are employed. Such networks include wired and wireless links. However, normal operation of the wireless links exhibit different latencies than those exhibited over the wir... | 03/02/2010 |
| 7653159 | Narrowband gain control of receiver with digital post filtering An Automatic Gain Control (AGC) circuit as used in a digital receiver that utilizes a main loop filter that is of a relatively wide bandwidth. A pre-filter, wideband variance is determined from the input digital signal, and a post-filter, narrowband variance is also... | 01/26/2010 |
| 7636554 | Multiple-input multiple-output radio transceiver A MIMO radio transceiver to support processing of multiple signals for simultaneous transmission via corresponding ones of a plurality of antennas and to support receive processing of multiple signals detected by corresponding ones of the plurality of antennas. The ... | 12/22/2009 |
| 7616970 | Dual mode unit for short range, high rate and long range, lower rate data communications A technique for communicating with a local area network (LAN) via a wireless connection determines whether a first short-range, high-speed, wireless communication path is available and connects to the LAN using a longer range, lower speed wireless communication path... | 11/10/2009 |
| 7613227 | Reverse link correlation filter in wireless communication systems A single, common correlation filter (CF) core is provided in a receiver for recovery of data from received code division multiple access (CDMA) signals. Signals are received over CDMA channels with different data rates, where the received signals include user inform... | 11/03/2009 |
| 7609648 | Antenna steering for an access point based upon control frames A method for operating an access point in a wireless local area network (WLAN) is provided. The access point includes a directional antenna for communicating with at least one remote station in a forward link based upon an exchange of packet data comprising a plural... | 10/27/2009 |
| 7593380 | Variable rate forward error correction for enabling high performance communication A protocol for optimizing the use of coded transmissions such as over wireless links. In this technique, interframes are first split into segments selected to be an optimum size according to transmission characteristics of the radio channel. Segments are assigned a ... | 09/22/2009 |
| 7586880 | Method of detection of signals using an adaptive antenna in a peer-to-peer network An adaptive antenna signal identification process to provide increased interference rejection in a wireless data network, such as a wireless Local Area Network (LAN). An adaptive antenna, such as a directional antenna, can be steered to various angle of arrival orie... | 09/08/2009 |
| 7580674 | Intelligent interface for controlling an adaptive antenna array An antenna control interface is integrated with common integrated circuit components, such as radio transceiver or baseband modem signal processing control logic. The antenna control interface controls the operation of an adaptive antenna array used with wireless co... | 08/25/2009 |
| 7573945 | System and method for joint maximal ratio combining using time-domain based signal processing A spatial signal processing system and method are provided to optimize the received signal-to-noise ratio (SNR) at a first radio communication device based on the transmit filter at another radio communication device. Using an estimate of the channel derived from a ... | 08/11/2009 |
| 7570921 | Systems and methods for improving range for multicast wireless communication Methods to optimize range of multicast signal communication in wireless communication applications that use range-enhanced techniques for directed signal communication. A multicast signal may be sent multiple times through each of a plurality of independent omnidire... | 08/04/2009 |
