Patents Assigned to Airvana, Inc.
  • Patent number: 8326342
    Abstract: This description relates to information sharing in a private access point network.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: December 4, 2012
    Assignee: Airvana, Inc.
    Inventors: Balaji Raghothaman, Deepak Das, Anand Srinivas, Pierre A. Humblet
  • Patent number: 7853263
    Abstract: In a radio access network, multiple radio network controllers are connected to several radio nodes using a network. The interconnected radio network controllers and radio nodes are addressable, and, therefore, each radio network controller can communicate directly with each radio node and visa versa. The radio access network can be configured to avoid active handoffs between radio network controllers by maintaining a traffic channel set up between an access terminal and a radio network controller even as the flow.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: December 14, 2010
    Assignee: Airvana, Inc.
    Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
  • Publication number: 20100290389
    Abstract: In general, a method performed on a personal base station includes transmitting a first pilot signal to a portable access terminal operating in an idle mode in a macrocell that uses a first carrier frequency. The first pilot signal is transmitted in the first carrier frequency to allow the portable access terminal to temporarily connect to the first pilot signal. A second pilot signal is transmitted in a second frequency that is different than the first frequency. The portable access terminal is dispelled from the first pilot signal, and the portable access terminal is allowed to connect to the second pilot signal.
    Type: Application
    Filed: May 18, 2009
    Publication date: November 18, 2010
    Applicant: Airvana, Inc.
    Inventors: Jindong Hou, Andrew Richardson, Kenneth Jones
  • Patent number: 7831257
    Abstract: In a radio access network (e.g., a cellular network), a radio receiver is configured with a switch that alternatively couples an antenna and an impedance-matched load to the remainder of the receiver. Sector load, e.g., rise-over-thermal (ROT), is monitored by comparing a first measurement of signal power in a radio receiver (e.g., signal power output by the receiver) when the radio receiver is coupled to an antenna receiving the data traffic with a second measurement of signal power in the radio receiver when the radio receiver is de-coupled from the antenna.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: November 9, 2010
    Assignee: Airvana, Inc.
    Inventors: Michael D. Pollman, Satish Ananthaiyer, Theodore O. Grosch
  • Patent number: 7801487
    Abstract: A device causes at least one access terminal that is configured to transmit data to a radio node in a sector of a radio access network to alter transmission. While transmission is altered, the device determines a power of a signal received at the radio node, and updates an average value of signal power using the power measured. A device receives, from one or more access terminals that are configured to receive data from a radio node in a sector of a radio access network, a requested rate at which information should be transmitted to each access terminal, receives from the access terminals information about quality of signals received from the radio node, and generates an event if the requested rate and the information about quality of signals fail to satisfy a condition. An access terminal, located in the vicinity of a first radio node configured to transmit data in a sector of a radio access network, measures signal power of pilot signals received by the access terminal.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: September 21, 2010
    Assignee: Airvana, Inc.
    Inventors: Sepehr Mehrabanzad, Satish Ananthaiyer, Pierre A. Humblet
  • Patent number: 7751835
    Abstract: In a radio access network, techniques for defining a non-circular paging area in which an access terminal is to be paged based on distance-based location updating information for a sector of the network.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: July 6, 2010
    Assignee: Airvana, Inc.
    Inventors: Vivek Sharma, Prasasth R. Palnati, Rajeev Chawla, Arthur J. Barabell, Champak Das
  • Publication number: 20100157941
    Abstract: This description relates to access terminal hand-off methods in wireless networks.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 24, 2010
    Applicant: Airvana, Inc.
    Inventors: Balaji Raghothaman, Woojune Kim
  • Patent number: 7729243
    Abstract: In a radio access network, the reverse link rate of an access terminal is controlled and stabilized by determining a number of connections in one or more sectors in which the access terminal has a connection and setting a rate limit based on at least one of the determined number of connections. The number of connections can be determined for each sector in which the access terminal has a connection or for some subset of these sectors. If the number of connections is determined for more than one sector, the radio access network may limit the reverse link rate based on the sector having the greatest number of connections.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: June 1, 2010
    Assignee: Airvana, Inc.
    Inventors: Satish Ananthaiyer, Sae-Young Chung, Sepehr Mehrabanzad
  • Patent number: 7730189
    Abstract: Techniques for network-initiated session recovery are described. A relationship is maintained between two identifiers both associated with a session between a first device and an access terminal in a wireless network. The first identifier is associated with the first device, and the second identifier is associated with a second device in communication with the first device. After a breach of the session, communications associated with the session are preserved based on the relationship between the first and second identifiers.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: June 1, 2010
    Assignee: Airvana, Inc.
    Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
  • Publication number: 20100075658
    Abstract: This description relates to access terminal authorization methods in wireless networks.
    Type: Application
    Filed: September 23, 2008
    Publication date: March 25, 2010
    Applicant: AIRVANA, INC.
    Inventors: Jindong Hou, Kenneth Jones
  • Patent number: 7672682
    Abstract: In a radio access network, techniques for determining how often an aces terminal in communication with the network is to monitor a channel of the network based on trigger information received from the access terminal that is specific to one or more of the following: a state of the terminal, a state of a premium application, and a user of the terminal. The trigger information includes information about one or more of the following: a power mode of the access terminal, a user profile identification, an activation of a premium application on the terminal, and a terminal of a premium application on the terminal.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: March 2, 2010
    Assignee: Airvana, Inc.
    Inventors: Vivek Sharma, Sundar Raman, Rayadurgam Ravikanth, Gopal Harikumar, Woojune Kim, Srinivas Kappla, Satish Grandhi
  • Patent number: 7626926
    Abstract: In a radio access network (e.g., a cellular network), a radio node is configured to monitor one or more characteristics of a stream of data packets destined for an access terminal (e.g., a cellular telephone, laptop computer, etc.) to determine whether there is congestion in a network supplying the stream of data packets. If the radio node detects congestion, the radio node transmits a congestion alert to another device to cause the rate at which data enters the network to be slowed. The rate may be slowed either directly (e.g., by an upstream device which slows the rate at which the upstream device supplies the data to the network) or indirectly (e.g., by a downstream device which requests a slower delivery of data from the radio node).
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: December 1, 2009
    Assignee: Airvana, Inc.
    Inventors: Firas Abi-Nassif, Sae-Young Chung
  • Patent number: 7603127
    Abstract: In a cell of a cellular wireless communication system, the SIR of at least one user in a sector of the cell is altered by temporarily reducing transmissions on a forward link in at least one other sector of the cell or a sector in another cell in accordance with a pattern.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: October 13, 2009
    Assignee: Airvana, Inc.
    Inventors: Sae-Young Chung, Dae-Young Kim, M. Vedat Eyuboglu, Gopal Harikumar
  • Publication number: 20090186626
    Abstract: In addition to other aspects disclosed, a portable base station requests a mobile handset to measure signal strengths associated with a portion of a code space. The portable base station also sends a message that represents the signal strength measurements to a remotely located control station.
    Type: Application
    Filed: December 21, 2007
    Publication date: July 23, 2009
    Applicant: Airvana, Inc.
    Inventor: Balaji Raghothaman
  • Patent number: 7558356
    Abstract: In a cellular network, a GPS receiver includes circuitry that modulates a global positioning system (GPS) timing pulse signal with a carrier signal and transmits the modulated signal to one or more remote base stations. When the modulated timing pulse signal is received at a remote base station it is demodulated and a timing pulse signal corresponding to the GPS timing pulse signal is recovered. The remote base station may be configured to transmit a reply signal back to the GPS receiver, which can then be used to estimate a propagation delay between the GPS receiver and the remote base station.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: July 7, 2009
    Assignee: Airvana, Inc.
    Inventors: Michael D. Pollman, Theodore O. Grosch
  • Patent number: 7558588
    Abstract: In a radio access network, techniques for enabling the network to provide a service availability guarantee to a user of a premium service without requiring the network to identify a priority level of a connection with an access terminal associated with the premium service user prior to connection establishment.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: July 7, 2009
    Assignee: Airvana, Inc.
    Inventors: Philip To, Tugay Eyceoz
  • Publication number: 20090170475
    Abstract: In addition to other aspects disclosed, through a non-secure network, one or more bidirectional secure logical connections are established between a mobile base station and a secure network interface.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Applicant: Airvana, Inc.
    Inventors: Shi Baw Ch'ng, Minsh Den, Woojune Kim, Douglas Norman Knisely, Robin Montague Mathews
  • Publication number: 20090170440
    Abstract: A method of mitigating interference between a private access point and an access terminal in a radio access network, where the private access point uses a shared carrier frequency that is shared with a macro access point, and where the access terminal has an idle operational state and an active operational state, includes directing the access terminal to move to a first carrier frequency other than the shared carrier frequency if the access terminal operates on the shared carrier frequency in the active operational state. The access terminal is configured to communicate with the macro access point and the access terminal is not authorized to communicate with the private access point. N carrier frequencies are used by the macro access point, where N?2.
    Type: Application
    Filed: December 31, 2007
    Publication date: July 2, 2009
    Applicant: AIRVANA, INC.
    Inventors: Vedat Eyuboglu, Pierre A. Humblet
  • Publication number: 20090116445
    Abstract: Techniques for transferring a communication connection for a client device from a source network device to a target network device include receiving first and second sequence numbers and applying a first processing technique to data segments associated with sequence numbers that succeed the first and the second sequence numbers.
    Type: Application
    Filed: November 6, 2007
    Publication date: May 7, 2009
    Applicant: AIRVANA, INC.
    Inventors: Prince Samar, Woojune Kim
  • Patent number: 7515643
    Abstract: In a cellular network, randomness is introduced into a transmitted signal at each transmitter, and the resulting received signal, which is the sum of all received signals, fluctuates more in time than a signal transmitted without the introduced randomness. While the introduction of randomness can diminish reception of some parts of the signal at the receiver, the transmitted signal can be encoded using forward error correction coding techniques, which allows the receiver to recover all of the signal information despite some diminished reception. Such randomization provides time diversity so that receivers can have more consistent performance. For broadcasted data, where users with the worst channel condition dictates the overall performance, having consistent performance across users can improve the overall network performance.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: April 7, 2009
    Assignee: Airvana, Inc.
    Inventor: Sae-Young Chung