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NEC Laboratories
(23 results)-
White Papers
Task Scheduling and Lightpath Establishment in Optical Grids
September 10, 2007, 12:00am PDT
Data-intensive grid applications require huge data transferring between multiple geographically separated computing nodes where computing tasks are executed. For a future WDM network to...
Provided by NEC Laboratories America
-
White Papers
Design and Implementation of the Node Identity Internetworking Architecture
December 5, 2008, 12:00am PST
The Internet Protocol (IP) has been proven very flexible, being able to accommodate all kinds of link technologies and supporting a broad range of applications. The basic principles of the...
Provided by NEC Laboratories Europe Heidelberg
-
Whitepapers
Distributed PCA-Based Anomaly Detection in Telephone Networks Through Legitimate-User Profiling
May 24, 2012, 12:00am PDT
In this paper, the authors present a distributed mechanism based on Principal Component Analysis (PCA) to profile the behavior of the legitimate users in telephone networks. The idea is to take...
Provided by NEC Laboratories
-
Whitepapers
Reducing Backhaul Costs for Mobile Content Delivery - An Analytical Study
May 24, 2012, 12:00am PDT
Mobile carriers are currently facing the tremendous challenge of coping with the rapid data traffic growth stemming from smart phones and data dongles. Recent studies have shown that caching of...
Provided by NEC Laboratories Europe Heidelberg
-
Whitepapers
Downlink Multiuser MIMO Scheduling in LTE Advanced Systems
May 24, 2012, 12:00am PDT
In this paper, the authors consider the DownLink (DL) MultiUser (MU) Multi-Input-Multi-Output (MIMO) scheduling for the fourth generation LTE Advanced (LTE-A) cellular networks. The DL MU-MIMO...
Provided by NEC Laboratories
-
Whitepapers
Improving Network Throughput in 60GHz WLANs Via Multi-AP Diversity
May 24, 2012, 12:00am PDT
Due to the limited diffracting ability of millimeter wave (mm-wave) signals, solving the blockage problem in 60GHz WLANs is one of major challenges. Since multiple Access Points (AP) are typically...
Provided by NEC Laboratories
-
Whitepapers
Standards-Compliant LTE and LTE-A Uplink Power Control
May 24, 2012, 12:00am PDT
In LTE and LTE-Advanced uplink, the interference power in a cell depends on the user scheduling and power assignment in neighboring cells. As a result, it is hard to accurately estimate the...
Provided by NEC Laboratories
-
Whitepapers
Backhaul Resource Allocation in LTE-Advanced Relaying Systems
March 12, 2012, 12:00am PDT
In 3GPP LTE-Advanced, relay is considered as an important means for extending cell coverage and improving capacity. Backhaul resource allocation needs to be carefully designed to achieve the...
Provided by NEC Laboratories
-
White Papers
Vehicle-to-Vehicle and Road-Side Sensor Communication for Enhanced Road Safety
August 8, 2008, 12:00am PDT
The authors propose a hybrid ITS safety architecture that combines vehicle-to-vehicle communication and vehicle-to-roadside sensor communication. Opposed to dedicated roadside units, which require...
Provided by NEC Laboratories Europe Heidelberg
-
Whitepapers
Optimizing Data Warehousing Applications for GPUs Using Kernel Fusion/Fission
February 29, 2012, 12:00am PST
Data warehousing applications represent an emergent application arena that requires the processing of relational queries and computations over massive amounts of data. Modern general purpose GPUs...
Provided by NEC Laboratories
-
Whitepapers
Two Bitcoins at the Price of One - Double-Spending Attacks on Fast Payments in Bitcoin
May 2, 2012, 12:00am PDT
Bitcoin is a decentralized payment system that is based on Proof-of-Work. Bitcoin is currently gaining popularity as a digital currency; several businesses are starting to accept Bitcoin...
Provided by NEC Laboratories
-
Whitepapers
Device-to-Device (D2D) Communication in MU-MIMO Cellular Networks
November 21, 2012, 12:00am PST
In this paper, the authors address a resource allocation problem, where a pair of device-to-device terminals are integrated into a Time Division Duplex (TDD) cellular network. By introducing an...
Provided by NEC Laboratories
-
Whitepapers
IntelligentWorkload Factoring for a Hybrid Cloud Computing Model
July 30, 2009, 12:00am PDT
The authors present an intelligent workload factoring service for enterprise customers to make the best use of public cloud services along with their privately-owned (legacy) data centers. It...
Provided by NEC Laboratories
-
White Papers
Congestion Control for Safety Messages in VANETs: Concepts and Framework
October 1, 2008, 12:00am PDT
Congestion control in packet data networks has been extensively studied. However, most algorithms are not directly applicable to safety messages in Vehicular Ad Hoc NETworks (VANETs), which have...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
Real-Time Video Stream Aggregation in Wireless Mesh Network
January 1, 2011, 12:00am PST
In this paper the authors design and evaluate Ganges, a wireless mesh network architecture that can efficiently transport real-time video streams from multiple sources to a central monitoring...
Provided by NEC Laboratories America
-
White Papers
IEEE 802.16m for IMT-Advanced: The Next Step in WirelessMAN Evolution
June 17, 2009, 12:00am PDT
The next step in the evolution of the IEEE WirelessMAN project is IEEE 802.16m. Building upon IEEE 802.16e mobile WiMAX, this standard in development is one of the contenders in the IMT-Advanced...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
Identity Driven Mobility Architecture
May 31, 2010, 12:00am PDT
This paper describes an identity based mobility architecture, which relies on the Identity Management System for mobility decision and execution. This is achieved by clearly separating mobility...
Provided by NEC Laboratories
-
White Papers
Identities in the Future Internet of Things
February 1, 2011, 12:00am PST
There are two problem areas of the current Internet to be solved in Future Internet scenarios - security and putting the user back in control despite the move to the Internet of things. With this...
Provided by NEC Laboratories
-
White Papers
Migration Policies for Location-Centric Data Storage in Mobile Ad-Hoc Networks
June 29, 2007, 12:00am PDT
Location-centric data storage is a fundamental paradigm for data management in wireless ad-hoc networks. It guarantees that data is stored at network nodes near specific geometric reference...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
B-SSCT: A Block Sequential Spectrum Sensing Scheme for Cognitive Radio
January 1, 2011, 12:00am PST
Recently, it has been shown that in comparison to the well-known energy detection scheme, the Sequential Shifted Chi-square Test (SSCT) is capable of delivering considerable reduction on the...
Provided by NEC Laboratories America
-
White Papers
Testing Dialog-Verification of SIP Phones With Single-Message Denial-of-Service Attacks
April 8, 2008, 12:00am PDT
The authors tested several SIP implementations against simple yet effective DoS Cancel and Bye attacks using forged dialog IDs. Their results are worrying and show that a majority of the...
Provided by NEC Laboratories
-
White Papers
Enhancing the Performance of TCP Over Wi-Fi Power Saving Mechanisms
February 21, 2012, 12:00am PST
The Wi-Fi technology is quickly being adopted by new types of devices that pose stringent requirements in terms of energy efficiency. In order to address these requirements the IEEE 802.11 group...
Provided by NEC Laboratories Europe Heidelberg
-
Whitepapers
SGSA: A SDMA-OFDMA Greedy Scheduling Algorithm for WiMAX Networks
August 20, 2012, 12:00am PDT
Future wireless networks need to address the predicted growth in mobile traffic volume, expected to have an explosive growth in the next five years mainly driven by video and web applications....
Provided by NEC Laboratories
-
Whitepapers
IntelligentWorkload Factoring for a Hybrid Cloud Computing Model
July 30, 2009, 12:00am PDT
The authors present an intelligent workload factoring service for enterprise customers to make the best use of public cloud services along with their privately-owned (legacy) data centers. It...
Provided by NEC Laboratories
-
Whitepapers
Device-to-Device (D2D) Communication in MU-MIMO Cellular Networks
November 21, 2012, 12:00am PST
In this paper, the authors address a resource allocation problem, where a pair of device-to-device terminals are integrated into a Time Division Duplex (TDD) cellular network. By introducing an...
Provided by NEC Laboratories
-
Whitepapers
Two Bitcoins at the Price of One - Double-Spending Attacks on Fast Payments in Bitcoin
May 2, 2012, 12:00am PDT
Bitcoin is a decentralized payment system that is based on Proof-of-Work. Bitcoin is currently gaining popularity as a digital currency; several businesses are starting to accept Bitcoin...
Provided by NEC Laboratories
-
Whitepapers
Optimizing Data Warehousing Applications for GPUs Using Kernel Fusion/Fission
February 29, 2012, 12:00am PST
Data warehousing applications represent an emergent application arena that requires the processing of relational queries and computations over massive amounts of data. Modern general purpose GPUs...
Provided by NEC Laboratories
-
Whitepapers
Backhaul Resource Allocation in LTE-Advanced Relaying Systems
March 12, 2012, 12:00am PDT
In 3GPP LTE-Advanced, relay is considered as an important means for extending cell coverage and improving capacity. Backhaul resource allocation needs to be carefully designed to achieve the...
Provided by NEC Laboratories
-
Whitepapers
Standards-Compliant LTE and LTE-A Uplink Power Control
May 24, 2012, 12:00am PDT
In LTE and LTE-Advanced uplink, the interference power in a cell depends on the user scheduling and power assignment in neighboring cells. As a result, it is hard to accurately estimate the...
Provided by NEC Laboratories
-
Whitepapers
Improving Network Throughput in 60GHz WLANs Via Multi-AP Diversity
May 24, 2012, 12:00am PDT
Due to the limited diffracting ability of millimeter wave (mm-wave) signals, solving the blockage problem in 60GHz WLANs is one of major challenges. Since multiple Access Points (AP) are typically...
Provided by NEC Laboratories
-
Whitepapers
Downlink Multiuser MIMO Scheduling in LTE Advanced Systems
May 24, 2012, 12:00am PDT
In this paper, the authors consider the DownLink (DL) MultiUser (MU) Multi-Input-Multi-Output (MIMO) scheduling for the fourth generation LTE Advanced (LTE-A) cellular networks. The DL MU-MIMO...
Provided by NEC Laboratories
-
Whitepapers
Reducing Backhaul Costs for Mobile Content Delivery - An Analytical Study
May 24, 2012, 12:00am PDT
Mobile carriers are currently facing the tremendous challenge of coping with the rapid data traffic growth stemming from smart phones and data dongles. Recent studies have shown that caching of...
Provided by NEC Laboratories Europe Heidelberg
-
Whitepapers
Distributed PCA-Based Anomaly Detection in Telephone Networks Through Legitimate-User Profiling
May 24, 2012, 12:00am PDT
In this paper, the authors present a distributed mechanism based on Principal Component Analysis (PCA) to profile the behavior of the legitimate users in telephone networks. The idea is to take...
Provided by NEC Laboratories
-
Whitepapers
SGSA: A SDMA-OFDMA Greedy Scheduling Algorithm for WiMAX Networks
August 20, 2012, 12:00am PDT
Future wireless networks need to address the predicted growth in mobile traffic volume, expected to have an explosive growth in the next five years mainly driven by video and web applications....
Provided by NEC Laboratories
-
White Papers
Enhancing the Performance of TCP Over Wi-Fi Power Saving Mechanisms
February 21, 2012, 12:00am PST
The Wi-Fi technology is quickly being adopted by new types of devices that pose stringent requirements in terms of energy efficiency. In order to address these requirements the IEEE 802.11 group...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
Testing Dialog-Verification of SIP Phones With Single-Message Denial-of-Service Attacks
April 8, 2008, 12:00am PDT
The authors tested several SIP implementations against simple yet effective DoS Cancel and Bye attacks using forged dialog IDs. Their results are worrying and show that a majority of the...
Provided by NEC Laboratories
-
White Papers
B-SSCT: A Block Sequential Spectrum Sensing Scheme for Cognitive Radio
January 1, 2011, 12:00am PST
Recently, it has been shown that in comparison to the well-known energy detection scheme, the Sequential Shifted Chi-square Test (SSCT) is capable of delivering considerable reduction on the...
Provided by NEC Laboratories America
-
White Papers
Migration Policies for Location-Centric Data Storage in Mobile Ad-Hoc Networks
June 29, 2007, 12:00am PDT
Location-centric data storage is a fundamental paradigm for data management in wireless ad-hoc networks. It guarantees that data is stored at network nodes near specific geometric reference...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
Identities in the Future Internet of Things
February 1, 2011, 12:00am PST
There are two problem areas of the current Internet to be solved in Future Internet scenarios - security and putting the user back in control despite the move to the Internet of things. With this...
Provided by NEC Laboratories
-
White Papers
Identity Driven Mobility Architecture
May 31, 2010, 12:00am PDT
This paper describes an identity based mobility architecture, which relies on the Identity Management System for mobility decision and execution. This is achieved by clearly separating mobility...
Provided by NEC Laboratories
-
White Papers
IEEE 802.16m for IMT-Advanced: The Next Step in WirelessMAN Evolution
June 17, 2009, 12:00am PDT
The next step in the evolution of the IEEE WirelessMAN project is IEEE 802.16m. Building upon IEEE 802.16e mobile WiMAX, this standard in development is one of the contenders in the IMT-Advanced...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
Real-Time Video Stream Aggregation in Wireless Mesh Network
January 1, 2011, 12:00am PST
In this paper the authors design and evaluate Ganges, a wireless mesh network architecture that can efficiently transport real-time video streams from multiple sources to a central monitoring...
Provided by NEC Laboratories America
-
White Papers
Congestion Control for Safety Messages in VANETs: Concepts and Framework
October 1, 2008, 12:00am PDT
Congestion control in packet data networks has been extensively studied. However, most algorithms are not directly applicable to safety messages in Vehicular Ad Hoc NETworks (VANETs), which have...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
Vehicle-to-Vehicle and Road-Side Sensor Communication for Enhanced Road Safety
August 8, 2008, 12:00am PDT
The authors propose a hybrid ITS safety architecture that combines vehicle-to-vehicle communication and vehicle-to-roadside sensor communication. Opposed to dedicated roadside units, which require...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
Design and Implementation of the Node Identity Internetworking Architecture
December 5, 2008, 12:00am PST
The Internet Protocol (IP) has been proven very flexible, being able to accommodate all kinds of link technologies and supporting a broad range of applications. The basic principles of the...
Provided by NEC Laboratories Europe Heidelberg
-
White Papers
Task Scheduling and Lightpath Establishment in Optical Grids
September 10, 2007, 12:00am PDT
Data-intensive grid applications require huge data transferring between multiple geographically separated computing nodes where computing tasks are executed. For a future WDM network to...
Provided by NEC Laboratories America
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