Ericsson Research

Displaying 1-10 of 10 results

  • White Papers // Nov 2012

    Scalability Aspects of Centralized Control of MPLS Access/Aggregation Network

    The authors apply the concept of centralized control to the MPLS access/aggregation network segment of service provider networks. They describe a numerical model to capture the scale and scope of the access/aggregation network and explain the corresponding scalability issues. They compare this numerical model to the experimental results obtained on...

    Provided By Ericsson Research

  • White Papers // Nov 2012

    Fast Failover for Control Traffic in Software-Defined Networks

    The Software-Defined Network (SDN) design decouples forwarding and control planes, and runs the controlling functions on servers that might be in different physical locations from the forwarding elements. Such separation introduces new challenges to the network resiliency, because disconnection between switches and the controller could disable the forwarding plane. In...

    Provided By Ericsson Research

  • White Papers // May 2012

    Carrier-Grade Network Management Extensions to the SDN Framework

    The concept of Software-Defined Networking (SDN) recently gained huge momentum in the industry, driven mainly by IT companies interested in datacenter applications. In this paper, however, the authors consider SDN applied in the carrier domain, which poses additional requirements on the network architecture, including network management functions. They derive concrete...

    Provided By Ericsson Research

  • White Papers // May 2012

    Performance Model for Mapping Processing Tasks to OpenFlow Switch Resources

    In a recent effort to push forward the powerful concept of software defined networks, OpenFlow has gained a lot of popularity as a practical approach to split the data and the control planes by standardizing an open interface that allow remote software controllers to dictate the forwarding behavior of network...

    Provided By Ericsson Research

  • White Papers // Mar 2012

    Studying Impacts of Prefix Interception Attack by Exploring BGP AS-PATH Prepending

    The AS path prepending approach in BGP is commonly used to perform inter-domain traffic engineering, such as inbound traffic load-balancing for multi-homed ASes. It artificially increases the length of the AS level path in BGP announcements by inserting its local AS number multiple times into outgoing announcements. In this paper,...

    Provided By Ericsson Research

  • White Papers // Feb 2010

    Experimentally-Driven Research in Publish/Subscribe Information-Centric Inter-Networking

    Testing and evaluating new architectural propositions is a challenge. Given the usual variety of technologies and scales involved in the necessary evaluation, a one-size-fits-all approach does hardly suffice. Instead, a collection of evaluation and experimentation methods must be chosen for a comprehensive testing of the proposed solutions. This paper outlines...

    Provided By Ericsson Research

  • White Papers // Oct 2009

    Performance Analysis of Shortest Path Bridging Control Protocols

    Ethernet networks are evolving from the enterprise to the carrier thus facing new demands and requirements. Therefore, a set of new control approaches are being defined for Ethernet. Amongst these, IEEE 802.1aq Shortest Path Bridging (SPB) aims to assure the transmission of unicast and multicast frames on the shortest path...

    Provided By Ericsson Research

  • White Papers // Mar 2009

    Cooperation Between Base Stations in Uplink for Future Cellular Networks

    Nowadays cellular systems operate with frequency reuse one, where adjacent cells use the same frequency band. User Equipments (UEs) located at cell edge are most affected by the resulting co-channel interference. In addition, cell edge UEs suffer from their weak carrier signal strength. This paper investigates new methods to increase...

    Provided By Ericsson Research

  • White Papers // Feb 2009

    Distributed Uplink Macro Diversity for Cooperating Base Stations

    Nowadays cellular systems operate with frequency reuse one, where adjacent cells use the same frequency band. Use Equipments (UEs) located at cell edge are mostly affected by the resulting co-channel interference. In addition, cell edge UEs suffer from their weak carrier signal strength. This paper proposes a new method to...

    Provided By Ericsson Research

  • White Papers // Feb 2009

    Distributed Uplink Signal Processing of Cooperating Base Stations Based on IQ Sample Exchange

    Cellular systems in general suffer from co-channel interference, when simultaneous transmissions in other cells use the same physical resources. In order to mitigate such co-channel interference cooperating Base Stations (BSs) can perform joint multi-antenna signal processing across cell borders. This paper describes a concept of distributed cooperation, where BSs communicate...

    Provided By Ericsson Research

  • White Papers // May 2012

    Performance Model for Mapping Processing Tasks to OpenFlow Switch Resources

    In a recent effort to push forward the powerful concept of software defined networks, OpenFlow has gained a lot of popularity as a practical approach to split the data and the control planes by standardizing an open interface that allow remote software controllers to dictate the forwarding behavior of network...

    Provided By Ericsson Research

  • White Papers // Nov 2012

    Scalability Aspects of Centralized Control of MPLS Access/Aggregation Network

    The authors apply the concept of centralized control to the MPLS access/aggregation network segment of service provider networks. They describe a numerical model to capture the scale and scope of the access/aggregation network and explain the corresponding scalability issues. They compare this numerical model to the experimental results obtained on...

    Provided By Ericsson Research

  • White Papers // Nov 2012

    Fast Failover for Control Traffic in Software-Defined Networks

    The Software-Defined Network (SDN) design decouples forwarding and control planes, and runs the controlling functions on servers that might be in different physical locations from the forwarding elements. Such separation introduces new challenges to the network resiliency, because disconnection between switches and the controller could disable the forwarding plane. In...

    Provided By Ericsson Research

  • White Papers // Oct 2009

    Performance Analysis of Shortest Path Bridging Control Protocols

    Ethernet networks are evolving from the enterprise to the carrier thus facing new demands and requirements. Therefore, a set of new control approaches are being defined for Ethernet. Amongst these, IEEE 802.1aq Shortest Path Bridging (SPB) aims to assure the transmission of unicast and multicast frames on the shortest path...

    Provided By Ericsson Research

  • White Papers // Feb 2010

    Experimentally-Driven Research in Publish/Subscribe Information-Centric Inter-Networking

    Testing and evaluating new architectural propositions is a challenge. Given the usual variety of technologies and scales involved in the necessary evaluation, a one-size-fits-all approach does hardly suffice. Instead, a collection of evaluation and experimentation methods must be chosen for a comprehensive testing of the proposed solutions. This paper outlines...

    Provided By Ericsson Research

  • White Papers // May 2012

    Carrier-Grade Network Management Extensions to the SDN Framework

    The concept of Software-Defined Networking (SDN) recently gained huge momentum in the industry, driven mainly by IT companies interested in datacenter applications. In this paper, however, the authors consider SDN applied in the carrier domain, which poses additional requirements on the network architecture, including network management functions. They derive concrete...

    Provided By Ericsson Research

  • White Papers // Feb 2009

    Distributed Uplink Macro Diversity for Cooperating Base Stations

    Nowadays cellular systems operate with frequency reuse one, where adjacent cells use the same frequency band. Use Equipments (UEs) located at cell edge are mostly affected by the resulting co-channel interference. In addition, cell edge UEs suffer from their weak carrier signal strength. This paper proposes a new method to...

    Provided By Ericsson Research

  • White Papers // Feb 2009

    Distributed Uplink Signal Processing of Cooperating Base Stations Based on IQ Sample Exchange

    Cellular systems in general suffer from co-channel interference, when simultaneous transmissions in other cells use the same physical resources. In order to mitigate such co-channel interference cooperating Base Stations (BSs) can perform joint multi-antenna signal processing across cell borders. This paper describes a concept of distributed cooperation, where BSs communicate...

    Provided By Ericsson Research

  • White Papers // Mar 2009

    Cooperation Between Base Stations in Uplink for Future Cellular Networks

    Nowadays cellular systems operate with frequency reuse one, where adjacent cells use the same frequency band. User Equipments (UEs) located at cell edge are most affected by the resulting co-channel interference. In addition, cell edge UEs suffer from their weak carrier signal strength. This paper investigates new methods to increase...

    Provided By Ericsson Research

  • White Papers // Mar 2012

    Studying Impacts of Prefix Interception Attack by Exploring BGP AS-PATH Prepending

    The AS path prepending approach in BGP is commonly used to perform inter-domain traffic engineering, such as inbound traffic load-balancing for multi-homed ASes. It artificially increases the length of the AS level path in BGP announcements by inserting its local AS number multiple times into outgoing announcements. In this paper,...

    Provided By Ericsson Research