Deutschetelekom Ag

Leland Stanford Junior University

Other

University of California

University of Illinois

William Marsh Rice University

Jatinder Pal Singh

Kyu-Han Kim

Bernd Girod

Jeonghun Noh

Alexander W Min

Angela Nicoara

Cheng-Hsin Hsu

Zhenyun Zhuang

Sachin Kumar Agarwal

Peter Pogrzeba

Xiaoqing Zhu

Lin Zhong

David Chen

Petros Zerfos

Frank Hartung

Gerhard Kadel

Nicholas Bambos

Ashish Khisti

Gerd Zimmermann

Clayton Wells Shepard

Jeongyeup Paek

Srinivasan Seetharaman

Bangnan Xu

Chen-Nee Chuah

Pablo Vidales

Haiyun Luo

Nathanael A Thompson

S M Shahriar Nirjon

Sachin Kumar Argawal

Minar Makar

Marcin Solarski

Ahmad Rahmati

Saqib Raza

Guanyao Huang

Nikolaos Markos Freris

Sam Tsai

Dhruv Gupta

Volkmar Scharf-Katz

Kyn-Han Kim

Shahriar SM Nirjon

Angela Nicora

A method of tracking an inventory of objects via a mobile communications device includes acquiring an image of one or more of the objects via the mobile communications device, which also collects a location of the mobile communications device while acquiring the image of the one or more of the objects. The location and image are transferred from the mobile communications device to a remote server via a wireless network, such that the one or more of the objects are identified at the server based on the image, and the location and identity of the one or more objects are stored on a database associated with the server.

Smartphone-based asset management system

A method is described for streaming video data within a network, wherein the video data includes a sequence of frames. The method includes encoding the sequence of frames and generating a plurality of substreams from the encoded frames in this embodiment. Each of the plurality of substreams is assigned an identifier, and each substream includes a common encoded frame and a non-overlapping portion of the encoded sequence. The non-overlapping portion of the encoded sequence of each substream is selected from the encoded frames based on the identifier of the respective substream. The method also includes transmitting the plurality of substreams to a receiver in an embodiment.

Distributed transcoding of video frames for transmission in a communication network

A method for managing TCP flows in a mobile device adapted to connect to two or more wireless network types includes enabling connection to a number of networks of different types at the mobile device and executing a plurality of Internet-enabled applications on the mobile device. Each such application forms an existing TCP connection over a first one of the wireless networks. The routing table is modified such that any additional TCP connection will be created on a second one of the wireless networks. The device determines that a termination condition has occurred and in response to determining that the termination condition has occurred, renders an interface on the mobile device to the first one of the wireless networks inoperative.

Heterogeneous network access on devices with one or more network interfaces

A system for enabling streaming video to a mobile client includes a plurality of fixed node peers linked to the mobile client via one or more networks as well as a video source linked to fixed node peers and configured to provide streaming video data representing a video presentation to each of the fixed node peers. A decoder assembly associated with each of the fixed node peers is configured to decode the streaming video data and to transcode a portion of the decoded streaming video data for transmission to the mobile client. A video substream manager and interleaver on the mobile client is provided for receiving the transcoded output of the decoder assemblies of the fixed node peers and reconstructing the video presentation on a screen of the mobile client.

Enhanced video streaming to mobile clients

A method for routing-assisted traffic monitoring includes providing a set of flows, each flow having an associated ingress routing device and an associated egress routing device. A controller determines a micro-flowset routing for the set of flows, the micro-flowset routing defining which of a set of directed links connecting a plurality of routing devices are used to route each of the flows from the respective ingress routing device to the respective egress routing device. The controller transmits flow information to at least a first routing device of the plurality of routing devices according to the micro-flowset routing, the flow information defining which of the set of directed links are to be used to route at least one flow entering the first routing device to a second routing device of the plurality of routing devices.

Method for routing-assisted traffic monitoring

The described system and method provide joint rate control and scalable stream adaptation for multiple clients concurrently competing for the same access networks. For each such client, an optimization problem is constructed and solved to determine the streaming rate over each access network, the video packets to be transmitted, and the access network over which each video packet is sent. The rate control and stream adaptation problem is constructed as an integer program in an embodiment of the invention, with an objective to minimize a cost function of the expected video distortion. Randomized packet scheduling is accounted for in an embodiment of the invention by relaxing the integer program into real-valued optimization programs and deriving convex programming approximations.

Distortion-aware multihomed scalable video streaming to multiple clients

A client-based system for use in a mobile client device in communication with a remote server device provides for dynamically switching among multiple wireless interfaces on the mobile client device. The system includes a first interface for communicating over a cellular network, a second interface for communicating over a WiFi network, and a computer-readable medium within the mobile client device, having thereon computer-executable instructions for switching one or more connection-oriented sessions from one of the first and second interfaces to the other based on a selection policy selected from an energy saving selection policy, an offload selection policy, and a performance selection policy.

System support for accessing and switching among multiple wireless interfaces on mobile devices

A method is provided for managing a location sensing operation for location-based applications, including activating a first sensor disposed in the portable device so as to provide a location sensing operation requested by at least one location-based application. The method further includes periodically monitoring movement of the portable device by a second sensor disposed in the portable device, and suppressing the location sensing operation of the first sensor in accordance with the movement of the portable device detected by the second sensor.

Apparatus, method, and system for sensing suppression for location-based applications

A method for navigation based on a cellid-aided positioning system includes: determining, at a cellid-aided positioning system-compatible device, that a user has moved through a sequence of cellids, wherein moving through a sequence of cellids comprises moving from a first region corresponding to a first cellid to a second region corresponding to a second cellid; accessing previously stored route information corresponding to the sequence of cellids, wherein the previously stored route information includes previously recorded sequences of cellids and global positioning system (GPS) information; estimating a current position of the user based on the previously stored route information; and displaying the current position of the user.

Energy-efficient positioning system for smartphone using cell-id sequence matching

A method for connecting a mobile client to a wireless network includes periodically triggering an access point scanning process so as to monitor an access point density of a wireless network. A frequency of the triggering is adjusted in response to a change in the access point density.

Method, apparatus, and system for connecting a mobile client to wireless networks

A method and system for determining an optimal throughput of a communications channel in a highly mobile wireless environment, which includes selecting power control measures, determining a throughput of the communications channel for each of the selected power control measures using a throughput model of the communications channel and the selected power control measure, wherein the throughput model is based on a probability of a packet error averaged over a packet fade, and wherein the probability of the packet error averaged over the packet fade is a function of the selected power control measure, and determining the optimal throughput as a maximum one of the throughputs determined for each of the selected power control measures.

Method and system to model TCP throughput, assess power control measures, and compensate for fading and path loss, for highly mobile broadband systems

A method for streaming audio data in a network, the audio data having a sequence of samples, includes encoding the sequence of samples into a plurality of coded base bitstreams, generating a plurality of enhancement streams, and transmitting the coded base bitstreams and the enhancement bitstreams to a receiver for decoding. Each of the enhancement bitstreams is generated from one of a plurality of non-overlapping portions of the sequence of samples.

Method and system for distributed audio transcoding in peer-to-peer systems

A method of spectrum access for wireless communications by a secondary unlicensed unit in a CRN environment comprising one or more secondary unlicensed mobile units and one or more primary licensed units includes receiving information indicative of a location and movement of one or more secondary unlicensed units and a channel usage pattern and spatial distribution of one or more primary licensed units is accessed and a guard distance to shield the one or more primary licensed units from interference is calculated. The channel availability to the one or more secondary unlicensed units is then calculated according to a two-state Markov model including the guard distance as a constraint and based on the information indicative of the location and movement of the one or more secondary unlicensed units and the channel usage pattern and spatial distribution of the one or more primary licensed units.

Opportunistic spectrum access in mobile cognitive radio networks

An error correction code includes a separate error code portion for each of two or more separate burst erasure durations (or burst error durations). For each burst erasure duration, the code can be employed to recover from the burst erasure with a different delay time. Each error code portion has a particular parameter for burst duration (B) and delay (T), meaning that the code can be used to recover from a burst erasure of duration B with delay T. Each error code portion is based on separating the source symbols into sub-symbols and diagonally interleaving the sub-symbols based on the (B,T) parameters for the error code portion. Accordingly, different burst erasures are recovered from with different delays.

Unequal delay codes for burst-erasure channels

A method is provided for delivery of content data to a plurality of hosts. Each host is configured to operate as at least one of a content uploading host and a content downloading host. The plurality of hosts form a peer-to-peer network.

Method and system for peer-to-peer content dissemination

Growing community of inventors

Mountain View, CA, United States of America

Jatinder Pal Singh