An IP-based QoS architecture for 4G operator scenarios

Abstract

This article describes a global QoS architecture for multimedia traffic in mobile heterogeneous environments. This architecture supports both multiple access networks and multiple service provider scenarios. The architecture is able to provide QoS per user and per service, implementing the notion of a user profile associated with control element functions. An integrated management approach to service and network management in the case of heterogeneous and mobile network access is presented based on cooperative association between QoS brokers and authentication, authorization, accounting, and charging systems. The overall exchange of messages is exemplified for the case of a field test with specific optimizations for voice traffic.

Interworking of 3G cellular networks and wireless LANs

“…At the edge of the sender's access networks, the RSVP signalling for end-to-end resource reservation is mapped to DiffServ PHBs, and the RSVP messages are tunnelled through the DiffServ domains till the receiver end. The DiffServ approach for core networks is further justified by the bandwidth over-provisioning in current core networks and the relatively low cost of upgrading transmission capability (Marques et al, 2003). A similar idea is used in the QoS architecture proposed in Grilo et al (2003), where RSVP is slightly modified.…”

“…Another IP-based QoS architecture is proposed in Marques et al (2003) for 4G networks supporting multiple accesses and multiple service providers. In this architecture, the end-to-end QoS support is integrated with mobility and Authentication, Authorisation, Auditing and Charging (AAAC).…”

A Secure Context Management for QoS-Aware Vertical Handovers in 4G Networks

“…3, the enhanced the model of [15] [16]. QoS Broker plays key roles in QoS-aware handover with core modules like Application specific Control, QoS Service Management, QoS-aware resource Management and interworking interfaces to SGSN, Secure Access Router, AAA Broker and QoS Broker.…”

A Transsignaling Strategy for QoS Support in Heterogeneous Networks

“…Our improved QoS architecture (Fig. 1), based on [9], assumes such a network, and defines specific entities for signalling and control. Three entities are defined, an AAAC server responsible for contract level QoS issues, an AQMUA (Advanced QoS Manager of Universidade de Aveiro) which is mainly a QoS Broker [4] with added functionalities, and SPAAQE (Signalling Processing, Access Authorization and QoS Enforcement) units, an advanced entity lying in access routers, that provides advanced signalling and QoS processing.…”