Lucent Technologies Inc.

Alcatel Lucent

Narad Networks, Inc.

Ciena Corporation

Nokia of America Corporation

Alcatel-lucent USA Inc.

Vencore Labs, Inc.

Kiran Meghashyam Rege

Krishna Balachandran

Joseph H Kang

Kemal Mehmet Karakayali

Pantelis Monogioudis

Subrahmanyam Dravida

Hong Jiang

Walid Ahmed

Bharat Tarachand Doshi

Doru Calin

Eunyoung Kim

Manas Tandon

Kirk K Chang

Sarath Kumar

Daniel R Jeske

Ashwin Sampath

Sanjiv Nanda

Muralidharan Sampath Kodialam

Dev Vrat Gupta

Wen-Yi Kuo

Satya Vrat Gupta

Thyaga Nandagopal

Gautam Desai

Frederick Peralta

Ravi Kumar

DeQuan Wu

Krishan Kumar Sabnani

Katherine Hua Guo

Carl Francis Weaver

Yung-Terng Wang

Achilles George Kogiantis

Wim Henderickx

Byron H Chen

Tung Ching Chiang

Anthony A Triolo

Abdulkadir Dinc

Victor A Abramsky

John Freidenfelds

Yogendra Champaklal Shah

William Harvey Johnson

Prasad Dorbala

Zhendong Cao

Dey V Gupta

Anoop Jayadevan

Sitaram Dikshitulu

Nitin Sonawane

A method of estimating and compensating for Doppler frequency shifts includes providing an accurate reference device for generating an accurate reference frequency in a Doppler estimation and compensation (DEC) system, the DEC system being electrically connected to a user device. The DEC system receives one of a downlink signal from a base station and an uplink signal from the user device. The one of the downlink signal and the uplink signal is compared to the accurate reference frequency. An estimate of a Doppler frequency shift associated with the one of the downlink signal and the uplink signal is determined. An offset Doppler frequency shift of opposite sign as the Doppler frequency shift is added to the one of the downlink signal and uplink signal to provide a compensated signal. The compensated signal is transmitted to one of the base station and user device.

Doppler estimation and compensation for wireless communication systems

The present disclosure generally discloses an autonomous wireless transmission mechanism. The autonomous wireless transmission mechanism may be configured to support autonomous transmissions by wireless end devices to wireless access nodes in a connectionless manner. In general, an autonomous wireless transmission by a wireless end device may include transmission of a preamble in a preamble transmission zone and autonomous transmission of a payload over one or more resource units of one or more payload transmission zones without requiring establishment of a connection between the wireless end device and the wireless access node. The autonomous wireless transmission mechanism, by obviating the need for a wireless end device to establish a connection with a wireless access node in order to transmit data to the wireless access node, also obviates a need for the wireless end device to operate in a scheduled transmission mode.

Autonomous wireless transmissions

Various methods and devices are provided to address the need for improved dual connectivity. For example, a network node () in a primary network includes a processing unit () and an interface unit (), which includes a network interface () for communication with other network devices. The processing unit is communicatively coupled to the interface unit and configured to receive, from a user equipment (UE) via the interface unit, a secondary Internet Protocol (IP) address for the UE, the secondary IP address being associated with a secondary network of the UE. The processing unit is also configured to initiate via the interface unit the establishment of at least one tunnel to bridge the network node and the UE via the secondary network.

Method and apparatus for improved dual connectivity

Embodiments are described herein to provide improvements to known network interference cancellation techniques. One general approach involves a first network node attempting () to decode a received signal which includes signaling from a first wireless device transmission and at least one interfering transmission. If the first network node is unsuccessful in attempting to decode the received signal, it is determined () whether it would be cost effective to obtain decoded signaling from a serving network node of a wireless device that corresponds to the at least one interfering transmission. If () it is determined to be cost effective, the decoded signaling that corresponds to the at least one interfering transmission is requested.

Cost effective network interference cancellation for wireless networks

Various methods and devices are provided to address the need for improved mobile communications in heterogeneous networks. In one method, an anchor-cell transceiver node communicates with a mobile device via a primary link. The anchor-cell transceiver node conveys information for the mobile device to the mobile device by routing at least a portion of the information to the mobile device via a secondary-cell transceiver node.

Method and apparatus for improved mobile communications in heterogeneous wireless networks

Various methods and apparatuses are provided to address the need for improved multi-carrier communication. In one apparatus, a radio access network (RAN) () includes multiple network nodes () operative to transmit, via multiple carriers (-), packet data to a user element (UE) () using a protocol stack. The protocol stack includes a radio link control (RLC) layer split into an upper RLC processing layer and multiple lower RLC processing layers. Each lower RLC processing layer is associated with one carrier of the multiple carriers and each lower RLC processing layer supports packet data transmission via its associated carrier. The upper RLC processing layer supports packet data transmission via the multiple carriers.

Method and apparatus for improved multi-carrier communication

In one example embodiment, a method for reducing an effect of an interference signal on data being transmitted over a communication channel includes determining, by a processor, a code word based on at least an information vector and an interference vector, the information vector representing the data, the interference vector representing the interference signal. The method further includes determining, by the processor, a code vector based on the determined code word. The method further includes generating, by the processor, a transmit vector based on the code vector and the interference vector.

Methods and apparatus for reducing interference effect on data transmitted over a communication channel

In one embodiment, the method includes determining, at a receiver, a total average received power over N resource elements and the L antennas, where N and L are integers greater than or equal to 1. The method further includes determining, at the receiver, a first bias in a first estimate of average received power for a received desired signal based on the determined total average received power; and generating, at the receiver, a first refined estimate of the average received power for the received desired signal based on the first estimate and the determined first bias.

Method of operating a receiver and a receiver

In one embodiment, the method includes determining, at a network element, a first filter component based on reference sequences for user equipments in a first set. The method further includes determining a second filter component. The second component is based on a plurality of received signals and has estimated contributions to the plurality of received signals by the user equipments in the first set removed. The plurality of received signals are associated with a plurality of antennas. The method further includes filtering a selected received signal based on the first and second filter components to obtain an estimated signal for a selected user equipment.

Method of receiving a signal in a wireless communication network and associated network elements

The present invention provides a method for content rate selection. The method includes selecting a content rate for play out of at least one frame transmitted from a media server to a media client via a wireless access network. Selection of the content rate is performed based on a statistical representation of a bandwidth available for transmission of frames.

Content rate control for streaming media servers

In one example embodiment, a method for reducing an effect of an interference signal on data being transmitted over a communication channel is disclosed. The method includes determining, by a processor, a code vector representing data based on an information vector and an interference vector, the information vector representing the data, the interference vector representing the interference signal. The method further includes generating, by the processor, a transmit vector for transmitting the data based on the code vector and the interference vector.

In one example embodiment, a method for reducing an effect of an interference signal on data being transmitted over a communication channel includes determining, by the processor, a code word based on a base information vector and an auxiliary vector, the base information vector including base information bits representing the data to be transmitted over the communication channel, the auxiliary vector corresponding to an interference vector representing the interference signal. The method further includes generating, by the processor, a transmit vector for transmission based on the determined code word and the interference vector.

Methods for proxy-driven content rate selection for streaming media servers are provided. In one method, one or more maximum transmission rate parameters from a network controller are stored at a proxy server in response to a receiver report message from the client. A target rate for the media session is generated based on the stored maximum transmission rate parameters, and the target rate is transmitted to a media server in a proxy-to-server feedback message. The media server selects the content rate from among a plurality of supported content rates in response to the proxy-to-server feedback message from the proxy server, and streams streaming multimedia frames to the client at the selected content rate.

Proxy-driven content rate selection for streaming media servers

Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving, at the node, a network update message; determining whether the network update message should be propagated to other nodes; if the network update message should be propagated to other nodes, forwarding the network update message to at least one other node; and if the network update message should not be propagated to other nodes, refraining from forwarding the network update message to any other node. Various further embodiments relate to a method and related network node including one or more of the following: determining a first time period for the network update message; setting the first time period as a delay time; waiting for the delay time; and after the delay time has elapsed, computing new routing information based on the network update message.

Reduction of message and computational overhead in networks

Growing community of inventors

Marlboro, NJ, United States of America

Kiran Meghashyam Rege