QoS Management in Fixed Broadband Residential Gateways

Abstract

QoS management is nowadays a mandatory feature in current broadband residential gateways developments. The interconnection between different QoS domains has to be treated into different steps in order to provide a reliable end-to-end QoS solution. The scenario analyzed in this paper is the mapping between QoS requirements in residential users connected to a broadband access network across a multiservice broadband access gateway. Different approaches to provide QoS in the access network are discussed as well as their impact in the design of a residential gateway. An architecture of a gateway based on IMS (IP Multimedia Subsystem) as SIP-based signaling domain for multimedia services is presented with the corresponding adaptation to a broadband fixed access scenario according to Next Generation Networks (NGN) standardization. Finally, the implementation of a prototype of the QoSenabled gateway, based on the Click! modular router [1], is described to demonstrate end-to-end QoS provisioning for multimedia services. This prototype allows us the demonstration of (1) an innovative way of extending gateway device functionalities using Click! and (2) the feasibility of residential gateway architecture proposed. The work presented in this paper has been developed within the framework of the 6 th Framework Programme IST MUSE [2] project.

Adaptive Quality of Service Management for Next Generation Residential Gateways

“…In this paper a flexible RGW architecture is proposed allowing the own gateway to autoconfigure itself using the signalling interchanged by the customer devices and the network. This architecture extends and demonstrate the concepts published in a previous work [3] where just the basic functionality was described, in order to explain the work developed in the MUSE European Project [4] where the main goal is to research the European next generation network. In MUSE the RGW is considered a key component and an entire Task Force is focused in its study and definition.…”

“…guaranteed QoS and relative QoS. -SIP signalling proxy: This functionality is necessary in the Signalling Proxy Scenario (SPS) proposed in [3]. In this scenario the NGN SP would behave as a signalling proxy on behalf of legacy terminals, by generating the SIP signalling associated with the upstream and the downstream traffic.…”

Advances on Adaptive Systems in NGN

“…For example, in a whole endto-end QoS the resource management must be present in every segments (CPN, AN, CN...) of the communication path. They are several works on NGN, which focus on the use of a RGW (Guerrero, 2005).…”

Integration of a QoS Aware End User Network within the TISPAN NGN Solutions

“…It will process all the SIP signalling messages exchanged between the end user network and the Core IMS in the NGN Core Network. In a previous work [2] this model was validated to assure that the RGW could handle all these messages without a perceptible performance degradation. The NGN SP will include the following functional entities:…”