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Bell Labs
(32 results)-
White Papers
Hardness of Robust Network Design
January 1, 2010, 12:00am PST
The authors settle the complexity status of the robust network design problem in undirected graphs. The fact that the flow-cut gap in general graphs can be large, poses some difficulty in...
Provided by Bell Labs
-
White Papers
Data Cleaning for Decision Support
January 1, 2010, 12:00am PST
Data cleaning may involve acquisition, at same effort or expense, of high-quality of data. Such data can serve not only to correct individual errors, but also to improve the reliability model for...
Provided by Bell Labs
-
White Papers
Network MIMO: Overcoming Intercell Interference in Indoor Wireless Systems
November 20, 2007, 12:00am PST
Network MIMO is a family of techniques whereby each user in a wireless system is served through all the access points within its range of influence. By tightly coordinating the transmission and...
Provided by Bell Labs
-
White Papers
Network Coding-Based Broadcast in Mobile Ad Hoc Networks
January 1, 2010, 12:00am PST
Broadcast operation, which disseminates information network-wide, is very important in multi-hop wireless networks. Due to the broadcast nature of wireless media, not all nodes need to transmit in...
Provided by Bell Labs
-
White Papers
Impact of Interfering Bluetooth Piconets on a Collocated p-Persistent CSMA-Based WLAN
June 29, 2009, 12:00am PDT
In this paper, the effect of co-channeled BlueTooth (BT) piconets on a Carrier Sense Multiple Access (CSMA)-based Wireless Local Area Network (WLAN) is investigated. Specifically, the p-persistent...
Provided by Bell Labs
-
White Papers
MAC Precomputation With Applications to Secure Memory
July 14, 2009, 12:00am PDT
The authors present ShMAC (Shallow MAC), a fixed input length message authentication code that performs most of the computation prior to the availability of the message. Specifically, ShMAC's...
Provided by Bell Labs
-
White Papers
Interference Alignment in Dense Wireless Networks
January 19, 2011, 12:00am PST
The authors consider arbitrary dense wireless networks, in which n nodes are placed in an arbitrary (deterministic) manner on a square region of unit area and communicate with each other over...
Provided by Bell Labs
-
White Papers
Efficient Linear Precoding in Downlink Cooperative Cellular Networks With Soft Interference Nulling
September 24, 2009, 12:00am PDT
A simple line network model is proposed to study the downlink cellular network. Without base station cooperation, the system is interference-limited. The interference limitation is overcome when...
Provided by Bell Labs
-
White Papers
Efficient Aggregate Computation Over Data Streams
November 20, 2007, 12:00am PST
Cisco's NetFlow Collector (NFC) is a powerful example of a real-world product that supports multiple aggregate queries over a continuous stream of IP flow records. NFC enables a plethora of...
Provided by Bell Labs
-
White Papers
Memory-Constrained Aggregate Computation Over Data Streams
November 11, 2010, 12:00am PST
Computing multiple aggregation queries over a data stream has applications in many domains: IP network monitoring, stock trading, analysis of Web logs, fraud detection in telecom networks and...
Provided by Bell Labs
-
White Papers
Access-Control Policies Via Belnap Logic: Effective and Efficient Composition and Analysis
April 8, 2008, 12:00am PDT
It is difficult to develop and manage large, multi-author access control policies without a means to compose larger policies from smaller ones. Ideally, an access-control policy language will have...
Provided by Bell Labs
-
Whitepapers
IA-TCP: A Rate Based Incast-Avoidance Algorithm for TCP in Data Center Networks
May 24, 2012, 12:00am PDT
In recent years, the data center networks commonly accommodate applications such as MapReduce and web search that inherently shows the in cast communication pattern; multiple workers...
Provided by Bell Labs
-
Whitepapers
Coordinated Dual-Layer Beamforming for Public Safety Network: Architecture and Algorithms
May 24, 2012, 12:00am PDT
The revolutionary success of commercial broadband wireless network has spurred significant interest in employing related technologies such as 3GPP Long Term Evolution (LTE) technologies to build a...
Provided by Bell Labs
-
Whitepapers
Energy Benefit of Distributed In-Network Processing for Personalized Media Service Delivery
May 24, 2012, 12:00am PDT
In-network processing of media streams will be necessary in order to meet the personalization, interactive, and real time requirements of future video centric media services. Using Multi-View...
Provided by Bell Labs
-
Whitepapers
Distributed STBC-OFDM and Distributed SFBC-OFDM for Frequency-Selective and Time-Varying Channels
March 12, 2012, 12:00am PDT
Distributed Space-Time Block Coding with Orthogonal Frequency Division Multiplexing (DSTBC-OFDM) and Distributed Space-Frequency Block Coding with Orthogonal Frequency Division Multiplexing...
Provided by Bell Labs
-
Whitepapers
Routing for Energy Minimization in the Speed Scaling Model
December 21, 2009, 12:00am PST
The authors study network optimization that considers energy minimization as an objective. Studies have shown that mechanisms such as speed scaling can significantly reduce the power consumption...
Provided by Bell Labs
-
Whitepapers
Routing and Scheduling for Energy and Delay Minimization in the Powerdown Model
December 21, 2009, 12:00am PST
Energy conservation is drawing increasing attention in data networking. One school of thought believes that a dominant amount of energy saving comes from turning off network elements. The...
Provided by Bell Labs
-
White Papers
A Stochastic Geometry Model for the Best Signal Quality in a Wireless Network
July 16, 2010, 12:00am PDT
In a wireless network composed of randomly scattered nodes, the characterization of the distribution of the best signal quality received from a group of nodes is of primary importance for many...
Provided by Bell Labs
-
White Papers
An Indoor Wireless System for Personalized Shopping Assistance
January 1, 2011, 12:00am PST
By integrating wireless, video, speech and real-time data access technologies, a unique shopping assistant service can be created that personalizes the attention provided to a customer based on...
Provided by Bell Labs
-
White Papers
The Capacity Region of Large Wireless Networks
September 8, 2008, 12:00am PDT
Characterizing the capacity region of wireless networks is a long standing open problem in information theory. The exact capacity region is, in fact, not known for even simple networks like a...
Provided by Bell Labs
-
White Papers
Modeling Data Transfer in Content-Centric Networking
June 14, 2011, 12:00am PDT
Content-centric networking proposals, as Parc's CCN, have recently emerged to define new network architectures where content, and not its location, becomes the core of the communication model....
Provided by Bell Labs
-
White Papers
Experimental Evaluation of Memory Management in Content-Centric Networking
April 22, 2011, 12:00am PDT
Content-Centric Networking is a new communication architecture that rethinks the Internet communication model, designed for point-to-point connections between hosts, and centers it around content...
Provided by Bell Labs
-
White Papers
Energy-Aware Scheduling Algorithms for Network Stability
January 13, 2011, 12:00am PST
A key problem in the control of packet-switched data networks is to schedule the data so that the queue sizes remain bounded over time. Scheduling algorithms have been developed in a number of...
Provided by Bell Labs
-
White Papers
Decentralized Utility Maximization in Heterogeneous Multicell Scenarios with Interference Limited and Orthogonal Air Interfaces
January 6, 2009, 12:00am PST
Overlapping coverage of multiple radio access technologies provides new multiple degrees of freedom for tuning the fairness throughput trade-off in heterogeneous communication systems through...
Provided by Bell Labs
-
White Papers
Queue Back-Pressure Random Access in Multi-Hop Wireless Networks: Optimality and Stability
May 20, 2009, 12:00am PDT
A model for wireless networks with slotted-Aloha-type random access and with multi-hop flow routes is considered. The goal is to devise distributed algorithms for utility-optimal end-to-end...
Provided by Bell Labs
-
White Papers
Self-Organizing Dynamic Fractional Frequency Reuse in OFDMA Systems
January 5, 2008, 12:00am PST
The authors describe an algorithm for sub-carrier and power allocation that achieves out-of-cell interference avoidance through dynamic Fractional Frequency Reuse (FFR) in downlink of cellular...
Provided by Bell Labs
-
White Papers
Design and Implementation of a Caching System for Streaming Media Over the Internet
November 4, 2007, 12:00am PDT
Congested networks and overloaded servers resulting from the ever growing number of Internet users contribute to the lack of good quality video streaming over the Internet. The paper proposes a...
Provided by Bell Labs
-
White Papers
Misuse Detection in Consent-Based Networks
April 10, 2011, 12:00am PDT
Consent-based networking, which requires senders to have permission to send traffic, can protect against multiple attacks on the network. Highly dynamic networks like Mobile Ad-hoc NETworks...
Provided by Bell Labs
-
White Papers
Network Tomography: Identifiability and Fourier Domain Estimation
January 1, 2012, 12:00am PST
Network tomography has been regarded as one of the most promising methodologies for performance evaluation and diagnosis of the massive and decentralized Internet. It can be used to infer...
Provided by Bell Labs
-
White Papers
IBAKE: Identity-Based Authenticated Key Exchange Protocol
November 11, 2011, 12:00am PST
The past decade has witnessed a surge in exploration of cryptographic concepts based on pairings over Elliptic Curves. In particular, identity-based cryptographic protocols have received a lot of...
Provided by Bell Labs
-
White Papers
Bandwidth Estimation for Best-Effort Internet Traffic
January 1, 2012, 12:00am PST
A fundamental problem of Internet traffic engineering is bandwidth estimation: determining the bandwidth (bits/sec) required to carry traffic with a specific bit rate (bits/sec) offered to an...
Provided by Bell Labs
-
White Papers
Toward Energy Efficient Content Dissemination
May 20, 2011, 12:00am PDT
A major role of today's Internet is to provide efficient content dissemination among users, such as distributing multimedia content and sharing user generated data. To meet the ever-increasing...
Provided by Bell Labs
-
Whitepapers
Routing and Scheduling for Energy and Delay Minimization in the Powerdown Model
December 21, 2009, 12:00am PST
Energy conservation is drawing increasing attention in data networking. One school of thought believes that a dominant amount of energy saving comes from turning off network elements. The...
Provided by Bell Labs
-
Whitepapers
Routing for Energy Minimization in the Speed Scaling Model
December 21, 2009, 12:00am PST
The authors study network optimization that considers energy minimization as an objective. Studies have shown that mechanisms such as speed scaling can significantly reduce the power consumption...
Provided by Bell Labs
-
Whitepapers
Distributed STBC-OFDM and Distributed SFBC-OFDM for Frequency-Selective and Time-Varying Channels
March 12, 2012, 12:00am PDT
Distributed Space-Time Block Coding with Orthogonal Frequency Division Multiplexing (DSTBC-OFDM) and Distributed Space-Frequency Block Coding with Orthogonal Frequency Division Multiplexing...
Provided by Bell Labs
-
Whitepapers
Energy Benefit of Distributed In-Network Processing for Personalized Media Service Delivery
May 24, 2012, 12:00am PDT
In-network processing of media streams will be necessary in order to meet the personalization, interactive, and real time requirements of future video centric media services. Using Multi-View...
Provided by Bell Labs
-
Whitepapers
Coordinated Dual-Layer Beamforming for Public Safety Network: Architecture and Algorithms
May 24, 2012, 12:00am PDT
The revolutionary success of commercial broadband wireless network has spurred significant interest in employing related technologies such as 3GPP Long Term Evolution (LTE) technologies to build a...
Provided by Bell Labs
-
Whitepapers
IA-TCP: A Rate Based Incast-Avoidance Algorithm for TCP in Data Center Networks
May 24, 2012, 12:00am PDT
In recent years, the data center networks commonly accommodate applications such as MapReduce and web search that inherently shows the in cast communication pattern; multiple workers...
Provided by Bell Labs
-
White Papers
Toward Energy Efficient Content Dissemination
May 20, 2011, 12:00am PDT
A major role of today's Internet is to provide efficient content dissemination among users, such as distributing multimedia content and sharing user generated data. To meet the ever-increasing...
Provided by Bell Labs
-
White Papers
Bandwidth Estimation for Best-Effort Internet Traffic
January 1, 2012, 12:00am PST
A fundamental problem of Internet traffic engineering is bandwidth estimation: determining the bandwidth (bits/sec) required to carry traffic with a specific bit rate (bits/sec) offered to an...
Provided by Bell Labs
-
White Papers
IBAKE: Identity-Based Authenticated Key Exchange Protocol
November 11, 2011, 12:00am PST
The past decade has witnessed a surge in exploration of cryptographic concepts based on pairings over Elliptic Curves. In particular, identity-based cryptographic protocols have received a lot of...
Provided by Bell Labs
-
White Papers
Network Tomography: Identifiability and Fourier Domain Estimation
January 1, 2012, 12:00am PST
Network tomography has been regarded as one of the most promising methodologies for performance evaluation and diagnosis of the massive and decentralized Internet. It can be used to infer...
Provided by Bell Labs
-
White Papers
Misuse Detection in Consent-Based Networks
April 10, 2011, 12:00am PDT
Consent-based networking, which requires senders to have permission to send traffic, can protect against multiple attacks on the network. Highly dynamic networks like Mobile Ad-hoc NETworks...
Provided by Bell Labs
-
White Papers
Self-Organizing Dynamic Fractional Frequency Reuse in OFDMA Systems
January 5, 2008, 12:00am PST
The authors describe an algorithm for sub-carrier and power allocation that achieves out-of-cell interference avoidance through dynamic Fractional Frequency Reuse (FFR) in downlink of cellular...
Provided by Bell Labs
-
White Papers
Queue Back-Pressure Random Access in Multi-Hop Wireless Networks: Optimality and Stability
May 20, 2009, 12:00am PDT
A model for wireless networks with slotted-Aloha-type random access and with multi-hop flow routes is considered. The goal is to devise distributed algorithms for utility-optimal end-to-end...
Provided by Bell Labs
-
White Papers
Decentralized Utility Maximization in Heterogeneous Multicell Scenarios with Interference Limited and Orthogonal Air Interfaces
January 6, 2009, 12:00am PST
Overlapping coverage of multiple radio access technologies provides new multiple degrees of freedom for tuning the fairness throughput trade-off in heterogeneous communication systems through...
Provided by Bell Labs
-
White Papers
Energy-Aware Scheduling Algorithms for Network Stability
January 13, 2011, 12:00am PST
A key problem in the control of packet-switched data networks is to schedule the data so that the queue sizes remain bounded over time. Scheduling algorithms have been developed in a number of...
Provided by Bell Labs
-
White Papers
Experimental Evaluation of Memory Management in Content-Centric Networking
April 22, 2011, 12:00am PDT
Content-Centric Networking is a new communication architecture that rethinks the Internet communication model, designed for point-to-point connections between hosts, and centers it around content...
Provided by Bell Labs
-
White Papers
Modeling Data Transfer in Content-Centric Networking
June 14, 2011, 12:00am PDT
Content-centric networking proposals, as Parc's CCN, have recently emerged to define new network architectures where content, and not its location, becomes the core of the communication model....
Provided by Bell Labs
-
White Papers
The Capacity Region of Large Wireless Networks
September 8, 2008, 12:00am PDT
Characterizing the capacity region of wireless networks is a long standing open problem in information theory. The exact capacity region is, in fact, not known for even simple networks like a...
Provided by Bell Labs
-
White Papers
An Indoor Wireless System for Personalized Shopping Assistance
January 1, 2011, 12:00am PST
By integrating wireless, video, speech and real-time data access technologies, a unique shopping assistant service can be created that personalizes the attention provided to a customer based on...
Provided by Bell Labs
-
White Papers
A Stochastic Geometry Model for the Best Signal Quality in a Wireless Network
July 16, 2010, 12:00am PDT
In a wireless network composed of randomly scattered nodes, the characterization of the distribution of the best signal quality received from a group of nodes is of primary importance for many...
Provided by Bell Labs
-
White Papers
Access-Control Policies Via Belnap Logic: Effective and Efficient Composition and Analysis
April 8, 2008, 12:00am PDT
It is difficult to develop and manage large, multi-author access control policies without a means to compose larger policies from smaller ones. Ideally, an access-control policy language will have...
Provided by Bell Labs
-
White Papers
Memory-Constrained Aggregate Computation Over Data Streams
November 11, 2010, 12:00am PST
Computing multiple aggregation queries over a data stream has applications in many domains: IP network monitoring, stock trading, analysis of Web logs, fraud detection in telecom networks and...
Provided by Bell Labs
-
White Papers
Efficient Aggregate Computation Over Data Streams
November 20, 2007, 12:00am PST
Cisco's NetFlow Collector (NFC) is a powerful example of a real-world product that supports multiple aggregate queries over a continuous stream of IP flow records. NFC enables a plethora of...
Provided by Bell Labs
-
White Papers
Efficient Linear Precoding in Downlink Cooperative Cellular Networks With Soft Interference Nulling
September 24, 2009, 12:00am PDT
A simple line network model is proposed to study the downlink cellular network. Without base station cooperation, the system is interference-limited. The interference limitation is overcome when...
Provided by Bell Labs
-
White Papers
Interference Alignment in Dense Wireless Networks
January 19, 2011, 12:00am PST
The authors consider arbitrary dense wireless networks, in which n nodes are placed in an arbitrary (deterministic) manner on a square region of unit area and communicate with each other over...
Provided by Bell Labs
-
White Papers
MAC Precomputation With Applications to Secure Memory
July 14, 2009, 12:00am PDT
The authors present ShMAC (Shallow MAC), a fixed input length message authentication code that performs most of the computation prior to the availability of the message. Specifically, ShMAC's...
Provided by Bell Labs
-
White Papers
Impact of Interfering Bluetooth Piconets on a Collocated p-Persistent CSMA-Based WLAN
June 29, 2009, 12:00am PDT
In this paper, the effect of co-channeled BlueTooth (BT) piconets on a Carrier Sense Multiple Access (CSMA)-based Wireless Local Area Network (WLAN) is investigated. Specifically, the p-persistent...
Provided by Bell Labs
-
White Papers
Network Coding-Based Broadcast in Mobile Ad Hoc Networks
January 1, 2010, 12:00am PST
Broadcast operation, which disseminates information network-wide, is very important in multi-hop wireless networks. Due to the broadcast nature of wireless media, not all nodes need to transmit in...
Provided by Bell Labs
-
White Papers
Network MIMO: Overcoming Intercell Interference in Indoor Wireless Systems
November 20, 2007, 12:00am PST
Network MIMO is a family of techniques whereby each user in a wireless system is served through all the access points within its range of influence. By tightly coordinating the transmission and...
Provided by Bell Labs
-
White Papers
Data Cleaning for Decision Support
January 1, 2010, 12:00am PST
Data cleaning may involve acquisition, at same effort or expense, of high-quality of data. Such data can serve not only to correct individual errors, but also to improve the reliability model for...
Provided by Bell Labs
-
White Papers
Hardness of Robust Network Design
January 1, 2010, 12:00am PST
The authors settle the complexity status of the robust network design problem in undirected graphs. The fact that the flow-cut gap in general graphs can be large, poses some difficulty in...
Provided by Bell Labs
-
White Papers
Design and Implementation of a Caching System for Streaming Media Over the Internet
November 4, 2007, 12:00am PDT
Congested networks and overloaded servers resulting from the ever growing number of Internet users contribute to the lack of good quality video streaming over the Internet. The paper proposes a...
Provided by Bell Labs
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