Method for forwarding traffic flow in IP load-carrying network

Abstract

The method includes following steps: in the circuit domain carried by IP of 3G communication system, adds a bearer control layer composed of bearer network control servers between the call control layer and IP bearer layer; through bearer control servers, configures the network topology of IP bearer network, and detects the resource variation in IP bearer network in real time, and selects routing strategy for traffic flow in 3G circuit domain to meet the QoS requirement, and sends down the routing strategy to the edge router in IP bearer network; the edge router labels the priority and dispatches the queue for the traffic flow matching the routing strategy, and in term of the routing strategy, makes priority forwarding for the traffic flow to guarantee the QoS of the traffic flow.

Description

technical field [0001] The invention relates to the service flow transmission technology of the circuit switching domain in the core network of the third generation mobile communication system, in particular to a method for forwarding the service flow in the IP bearer network. Background technique [0002] Currently, a mobile communication system mainly includes a radio access network (RAN, Radio Access Network) and a core network (CN, CoreNetwork). Among them, the wireless access network handles all wireless-related functions, while the CN handles all voice calls and data connections in the mobile communication system, and realizes switching and routing functions with external networks. The CN is logically divided into a circuit switched domain (CS, Circuit Switched Domain) and a packet switched domain (PS, Packet Switched Domain). [0003] The system architecture of the wireless communication system is constantly evolving. At present, whether it is the Universal Mobile T...

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Problems solved by technology

[0012] However, in the above-mentioned existing technical solutions of using IP packet network to carry voice and signaling, since the routing process of the service flow in the IP bearer network is performed by routers in the IP bearer network, the route selected by the router is random. The communication quality of the selected route cannot be guaranteed, and because the communication quality of different routes is different, data packets may encounter routing congestion during transmission, resulting in packet loss, delay, jitter and other problems, thereby seriously reducing The quality of service (QoS) cannot be met, and the user's demand for QoS cannot be met.

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