CARMEN: Delivering carrier grade services over wireless mesh networks

2012 21st International Conference on Computer Communications and Networks (ICCCN)

2012

Today's wireless operators must support the tripleplay service offerings demanded by the market or by regulatory bodies through so-called Universal Service Obligations (USOs). Typically, those services are offered within the scarce and precious wireless spectrum resources owned by the providers. In parallel, broadcasters provide live TV and radio programming via their own radio spectrum. The paradigm shift from live TV to time-shifted consumption blurs the previously clear separation between broadcasting services and multi-media content received via regular, wired or wireless, data networks. The expected reduction of live content through decomposition and clever rescheduling may result in temporarily vacated resources in the TV spectrum which could then be used for regular wireless data services. In this paper we argue that such a 'Dynamic Broadcast' scheme can be supported -at layer 2.5 -by our Wireless BackHaul (WiBACK) architecture, focusing on the architecture and protocol requirements to integrate Unidirectional Technologies (UDTs) such as DVB-T2 or ATSC. Initial validation results show that our WiBACK architecture can support a 'Dynamic Broadcast' system and provides the mechanisms to orchestrate such coordinated white space usage while providing a common MPLS-based transport.

Section: Motivationmentioning

confidence: 99%

Section: Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Wireless Back-Haul Architecture Supporting Dynamic Broadcast and White Space Coexistence

2012 21st International Conference on Computer Communications and Networks (ICCCN)

2012

“…Thus, CG-WMANs can be compared to typical operator access network with two major limiting factors: the severe capacity constraints due to scarce wireless spectrum resources and the volatile link conditions. The heterogeneous CG-WMAN developed by the CARrier grade wireless MEsh Network (CARMEN) [3] consortium is based on a concept which combines and adapts technology independent Multi Protocol Label Switching (MPLS)-based Traffic Engineering [2], IEEE 802.21 command and event services as well as a model to address the potentially shared frequency spectrum resources of wireless links. LSP are used at an aggregate level to separate traffic classes with different QoS requirements and to support Mobile Terminal (MT) mobility through Proxy Mobile IP (PMIP) [6].…”

Section: Motivationmentioning

confidence: 99%

QoS-aware flow monitoring and event creation in heterogeneous MPLS-based Wireless Mesh Networks supporting unidirectional links

2009 IEEE 9th Malaysia International Conference on Communications (MICC)

2009

Abstract-Monitoring is a crucial task in QoS-aware networks since it provides statistics to verify that the network performs within the committed QoS parameters. It is especially important in a resource-constrained Carriergrade Wireless Mesh Access Network (CG-WMAN) in order to monitor a node's neighborhood, established links as well as MPLS QoS-traffic flows, so-called Label-Switched Paths (LSPs). In this paper, we present a monitoring architecture for LSPs in a heterogeneous CG-WMAN, where configurable Rating Agents perform adaptive per-LSP event creation based on monitoring statistics, QoS-requirements and overall network state. Keeping the footprint of the monitoring mechanism at a minimum, our approach is based on quasipassive monitoring minimizing the transmission of extra frames. To support unidirectional links as well as 1-to-N multicast trees, a receiving side feedback-free mechanism is proposed which can be extended with transmitting side functionality. Initial results obtained in our testbed show that we can reliably detect under-performing links according to the QoS requirements of the payload.

“…The work presented in this paper has been done within the context of the CARrier grade wireless MEsh Network (CARMEN) [2] project, which aims at studying and specifying a WMN supporting carrier grade triple-play services in future heterogeneous mobile/fixed network operator environments. A CARMEN access network can complement existing access technologies by exploiting low costs mesh networking techniques.…”

Section: Introductionmentioning

confidence: 99%

Towards QoS Provisioning in a Heterogeneous Carrier-Grade Wireless Mesh Access Networks Using Unidirectional Overlay Cells

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

2009

Abstract. The visibility and success of Wireless Mesh Network (WMN) deployments has raised interest among commercial operators in this technology. Compared to traditional operator access networks WMNs have the potential to offer easier deployment and flexible self-reconfiguration at lower costs. A WMN-type architecture considered as an alternative for an operator access network must meet similar requirements such as high availability and guaranteed QoS in order to support triple-play content provisioning. In this paper we introduce an architecture of such a Carrier-grade Wireless Mesh Access Network (CG-WMAN). We then present our contribution, an approach to seamlessly integrate unidirectional broadcast cells (i.e. DVB-T) into such a CG-WMAN. This allows higher layer protocols to utilize broadcast cells like regular mesh links, where beneficial for a given payload and receiver distribution. We then present a typical use case and discuss for which combinations of traffic type, user distribution and QoS requirements the use of longer range broadcast technologies can help to improve the overall CG-WMAN performance in terms of throughput and reliability.