Tellabs Operations, Inc.

Airvana Network Solutions, Inc.

Airvana, Inc.

Ericsson Evdo Inc.

Gopal Harikumar

Daniel J Marchok

Kenneth J Rudofski

M Vedat Eyuboglu

Dae-Young Kim

Sae-Young Chung

Woojune Kim

Satish Ananthaiyer

Sepehr Mehrabanzad

Sanjay Cherian

Rayadurgam Ravikanth

Dennis Ng

Roshan M Rao

Prasasth Reddy Palnati

Srinivas Kappla

Deepak Garg

Amit Mate

Fugui Wang

Vivek Sharma

Mehdi Alasti

Sundar Raman

Satish Grandhi

A channel in a multiple carrier communication system is equalized by computing a desired spectral response, shortening the impulse response of the channel so that a significant part of an energy of the impulse response is confined to a region that is shorter than a target length and filtering the signal based on the desired spectral response. A multiple carrier communication system may include a primary impulse shortening filter that receives an output signal of an analog to digital converter and accepts coefficients. A secondary impulse shortening filter may receive the output signal of the analog to digital converter, output an output signal, and pass coefficients to the primary impulse shortening filter. A reference signal generator may output a reference signal. A comparator may compare the output signal and the reference signal and output a resulting error signal. An adaptive processor may compute coefficients for the secondary impulse shortening filter based on the error signal.

Filter for impulse response shortening with additional spectral constraints for multicarrier transmission

A connection is established between an access terminal and a first radio network controller through a first radio node. The first radio node is controllable primarily by the first radio network controller. The connection is maintained with the first radio network controller as the access terminal moves from a coverage area of the first radio node toward a coverage area of a second radio node. The second radio node is controllable primarily by a second radio network controller and controllable subordinately by the first radio network controller. A connection is also established through the second radio node. Upon a fulfillment of a predetermined criterion, the connection is transferred from the first radio network controller to the second radio network controller.

Handing off active connections

In addition to other aspects disclosed, a data over signaling message that identifies a recipient access terminal is transmitted from a radio network controller to the sector in response to an attempt by an access terminal on a sector of a wireless network to access a service of the wireless network.

Signaling for push-to-talk

A multiple carrier communication system includes a primary impulse shortening filter that receives an output signal of an analog to digital converter and accepts coefficients. A secondary impulse shortening filter receives the output signal of the analog to digital converter, outputs an output signal, and passes coefficients to the primary impulse shortening filter. A reference signal generator outputs a reference signal. A comparator compares the output signal and the reference signal and outputs a resulting error signal. An adaptive processor computes coefficients for the secondary impulse shortening filter based on the error signal.

Time-domain equalization for discrete multi-tone systems

In a radio access network, techniques for multicasting information from a radio network controller to radio nodes. The techniques further include broadcasting the information from the radio nodes to mobile access terminals. The information can include content to be delivered to the access terminals.

Broadcasting in wireless systems

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.

Boosting a signal-to-interference ratio of a mobile station

In addition to other aspects disclosed, in response to an attempt by an access terminal in a sector of a wireless network to provide push-to-media content to another access terminal, the push-to-media session content is transmitted from the first access terminal over a multicast flow to the other access terminal.

Multicasting push-to-media content

A channel in a multiple carrier communication system is equalized by computing a target spectral response, shortening the impulse response of the channel so that a significant part of an energy of the impulse response is confined to a region that is shorter than a target length and filtering the signal based on the target spectral response.

Spectrally constrained impulse shortening filter for a discrete multi-tone receiver

The description describes examples for performing reverse link power control in a mobile network having a plurality of first modem devices that receive and transmit signals to wireless access terminals (ATs) and a second device in communication with the plurality of first devices. Execution is transitioned between a first and a second loop to control reverse link power of one of the ATs. The transition is based on a state of a connection. The first control loop executes at one of the first devices and the second loop executes at the second device.

Reverse link power control

In a radio access network, an access terminal is assigned frequency channels for communication between the access terminal and a radio node of a radio access network based on a strength of a signal determined for the access terminal.

Channel assignment in wireless communication

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.

Network-initiated session recovery

In a cell of a cellular wireless communication system, the SIR of at least one user in a sector of the cell is increased 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.

This description describes examples of performing reverse link power control in a mobile network having a plurality of first modem devices that receive and transmit signals to wireless access terminals (ATs) and a second device in communication with the plurality of first devices. One of the first devices derives a first power control threshold (PCT) value for reverse link power of one of the access terminals (ATs) and the second device derives a second power control threshold (PCT) value for reverse link power of the one of the ATs. The second power control threshold (PCT) value is transmitted using a data traffic path and either the first PCT value or the second PCT value is selected.

Growing community of inventors

Waltham, MA, United States of America

Gopal Harikumar