| 摘要 |
A telecommunication system comprising an access network (EDGE) to which a plurality of subscribers (USERS) are coupled, interconnected with a core network (CORE) to which several network service providers (NSP) are coupled. The system further comprises a primary tier broadband remote access server (T1_BRAS) interfacing the access and the core networks, and a secondary tier broadband remote access server (T2_BRAS) located closer to the subscribers. In this system, when subscribers want to be connected to service providers, the secondary tier server sends (S1) the upstream traffic from the subscribers towards the primary tier server. The primary tier server then classifies these incoming flows into session aggregations on basis of a local algorithm. Finally, the primary tier server signals (S2) to the secondary tier server to aggregate predetermined incoming flows into communication pipes according to the session aggregations. According to the present method, the primary tier server imposes an aggregation specification onto the secondary tier server. This aggregation specification specifies local rules to be applied by the secondary tier server to instances of the session aggregations. The access network (EDGE) preferably uses label switching [L2] technology between the primary and the secondary tier servers.
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