Nec Usa, Inc.

University of California

Allot Communications Ltd.

Other

Nec Corporation

Nec Research Institute, Inc.

Ortiva Wireless, Inc.

Stmicroelectronics Gmbh

Sujit Dey

Debashis Panigrahi

Anand Raghunathan

Miodrag Potkonjak

Parag Arole

Niraj K Jha

Jiangtao Wen

Ganesh Lakshminarayana

Douglas Wong

Naomi Ramos

Srimat T Chakradhar

Pranav N Ashar

Sharad Malik

Faraydon O Karim

Rabindra K Roy

Subhrajit Bhattacharya

Kanishka Lahiri

Steven G Rothweiler

Debashi Panigrahi

Hasti Ahlehagh

Jinwen Zan

Supriya Bhat

Andjela Illic

Nishant Mittal

Shoubhik Mukhopadhyay

Yusuke Takebuchi

Debasis Panigrahi

Anh Nguyen

A method for delivering video data from a server in a content delivery network (CDN). Video preferences of active users of a cell are determined. Video data is cached at one or more base station nodes disposed in a radio access network (RAN), wherein the video data is cached in one or more micro-caches according to a caching policy that is based on the determined video preferences. A request is received for video data. If the cached video data includes the requested video data, the cached video data is served from the RAN cache. If the cached video data does not include the requested video data, the requested video is fetched from the CDN according to a scheduling approach that considers Quality of Experience (QoE).

System and method for delivering video data from a server in a wireless network by caching the video data

A method of communication is provided according to embodiments of the present invention. A request is received for video data for each of a plurality of devices. For each of the wireless devices, performance capability of the device, and optionally network information, is obtained. A video scalability level for the video data for each of the devices is determined based on the obtained performance capability, and optionally the network information. The video data for each of the devices is scaled according to the determined video scalability level, and the scaled video data is delivered to each of the devices.

Network and device aware video scaling system, method, software, and device

A method and system are provided for wireless multimedia customization for different access networks with variable network conditions and device types. In one aspect, when a multimedia content clip is available, the clip is processed for transport by processing it in accordance with different options for the content clip in an optimized way that helps dynamic customization. For example, instead of preparing a version of the entire content clip, targeted for a particular network condition and target device characteristics, or creating a separate processed clip for each compression parameter available, a set of content ingredients are generated that can address a wide range of network conditions even through dynamic fluctuations in conditions and device characteristics.

Network adaptation of digital content

Digital video content is processed for delivery over a communications channel by segmenting the digital video content into one or more regions of interest (ROI) in accordance with content signature of the video content and encoding the digital video content in accordance with the ROI segmentation and the communications channel.

Intelligent video signal encoding utilizing regions of interest information

A method and system for wireless data communication. A request is accepted for communication of a data collection including a plurality of data objects. For each of the plurality of data objects, content importance and error resilience properties are evaluated. A transmission order of the data objects is determined based upon evaluated content importance, error resilience properties, past channel conditions and predicted channel conditions, and one or more data objects are selected based on the determined order. An error control level is selected for transmission of data packets for communicating the selected data objects based upon error resilience properties and current channel conditions to achieve communication of the data collection.

Content and channel aware object scheduling and error control

A method for monitoring a wireless channel or wireless network. Preferably, the method and system monitors a web-based network. Active data probing is used to estimate bandwidth availability when no a-priori knowledge of the current channel or network condition is available, and passive monitoring is used to track ongoing web traffic in estimating the current bandwidth available. Data probes are selected that are dynamically customized based on application requirements and the network variability observed in view of a balancing between accuracy of the bandwidth estimation and the potential overhead in terms of time consumed and additional traffic used. In this way, under specified limits of overhead, the active probing attempts to achieve best-effort network bandwidth estimation, and the passive monitoring tracks ongoing web traffic in estimating the current bandwidth available.

Network monitoring system and method

Techniques and systems designed to dynamically control communications between wireless devices and an access point in a wireless local area network (WLAN) to enhance the quality of service (QoS). Described techniques and systems may be implemented to further enhance QoS in WLANs under IEEE 802.11e.

Dynamic adaptation for wireless communications with enhanced quality of service

Apparatus and method suitable for improving reliability of collected sensor data over a network. One or more transient errors are predicted and corrected using correlation of collected data. For example, sensor data can be collected from one or more sensor nodes in a network. A device other than a sensor node can use the data to develop a predictive model based upon inherent redundancy in the sensor data, and correct one or more later-received values deemed unreliable.

Apparatus and method for improving reliability of collected sensor data over a network

Network transmission of live digital content from sources to receiving devices is enabled with real-time encoding, customization, and transmission of the live content according to user preferences, receiving device characteristics, network conditions and the like. Content, such as advertising customized to user profile and user location, may be conveniently inserted into the live content. Source-to-screen delay from sources to receiving devices is reduced and channel switching is supported.

Digital content buffer for adaptive streaming

A method of designing a communication architecture comprising receiving a partitioned system, communication architecture topology, input traces and performance matrices. Analyzing and creating communication analysis graph (CAG). Partitioning communication instances to create partition clusters. Evaluating cluster statistics related to the partition clusters and assigning parameter values to the partition clusters to form a new system with new communication architecture. Reanalyzing the new system and recomputing performance metrics. If performance is improved then synthesizing CATs to realize optimized protocols. If performance is not improved then the process is repeated.

Methodology for the design of high-performance communication architectures for system-on-chips using communication architecture tuners

A method and apparatus for design-for-low-power of register transfer level (RTL) controller/data path circuits that implement control-flow intensive specifications. The method of the invention focuses on multiplexer networks and registers which dominate the total circuit power consumption and reduces generation and propagation of glitches in both the control and data path parts of the circuit. Further the method reduces glitching power consumption by minimizing propagation of glitches in the RTL circuit through restructuring multiplexer networks (to enhance data correlations and eliminate glitchy control signals), clocking control signals, and inserting selective rising/falling delays, in order to kill the propagation of glitches from control as well as data signals. To reduce power consumption in registers, the clock inputs to registers are gated with conditions derived by an analysis of the RTL circuit, ensuring that glitches are not introduced on the clock signals.

Register transfer level power optimization with emphasis on glitch analysis and reduction

A power management method and system targeted toward high-level synthesis of data-dominated behavioral descriptions. The method of the present invention is founded on the observation that variable assignment can significantly affect power management opportunities in the synthesized architecture. Based on this observation, a procedure for constraining variable assignment is provided so that the functional units in the synthesized architecture do not execute any spurious operations.

Constrained register sharing technique for low power VLSI design

A low-overhead controller-based power management technique that re-specifies control signals to reconfigure existing multiplexer networks and functional units to minimize unnecessary activity. Though the control signals in an RT-level implementation are fully specified, they can be re-specified under certain states/conditions when the data path components that they control need not be active. Another aspect of this invention is an algorithm to perform power management through controller re-specification, that consist of constructing an activity graph for each data path component, identifying conditions under which the component need not be active, and re-labeling the activity graph resulting in re-specification of the corresponding control expressions. The algorithm avoids the above negative effects of controller re-specification. Experimental results demonstrate that (i) controller re-specification allows us to perform efficient power management and obtain large power savings for control-flow intensive designs, which pose several challenges to conventional power management techniques, and (ii) it is important to consider the various potential negative effects while performing controller re-specification in order to obtain maximal power savings.

Controller-based power management for low-power sequential circuits

An alternative method for testing circuits (H-SCAN) which retains the main advantage of full scan testing, namely, the ability to use combinational automatic test pattern generation (ATPG), while eliminating the high area overhead the long test application time associated with full, scan test methods. The method provides a practical test methodology that can be easily applied to any RT-level specification. The method uses existing connections of registers and other structures available in a high-level specification of a circuit without necessitating the use of scan flip-flops. Test application time is reduced by using the parallelism inherent in the circuit design to load multiple flip-flops in a single clock cycle, without having to add parallel scan chains as done in traditional parallel scan approaches.

Low cost testing method for register transfer level circuits

A technique for optimizing the speed of sequential synchronous digital circuits. First, the bottlenecks that prevent retiming for shortening the delay period are identified and then conditions to eliminate the bottlenecks are derived. This involves identifying the subcircuits associated with the bottlenecks, satisfying a set of timing constraints on the subcircuits, and developing a new circuit that meets the timing constraints. The new circuit free of bottlenecks can generally be retimed by relocation of the forward slack latches to reduce the clock period.

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San Diego, CA, United States of America

Sujit Dey