System for dynamic service quality negotiation of next-generation network and its realization method

Abstract

The invention relates to a service quality dynamic negotiation system and a realization method in a next-generation network. In the invention, a resource and access control sub-system provides interfaces to be communicated with a transmission function module, a business control function module and the sub-systems of a network annex to ensure that when a user terminal of the next-generation network carries out a business which requires to provide QoS (service quality) guarantee, the resource and access sub-system can gain parameter information of the required QoS guarantee and determine access control parameters according to the QoS parameters information. In the end, the determined access control parameters are sent to the transmission function module to realize the QoS guarantee aiming at the business. The invention allows end-to-end QoS negotiation in a NGN according to the availability of the resources of the present network, thus the feasibility of the QoS negotiation result is enhanced effectively, therefore, the invention can guarantee effectively the QoS of the business transmission in the NGN.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a system for dynamically negotiating service quality in a next-generation network and an implementation method thereof. Background technique [0002] One of the characteristics of NGN (Next Generation Network, Next Generation Network) is that the service layer is separated from the transport layer, and the transport layer is usually implemented based on packet and optical technologies. At present, the TISPAN working group of ETSI (European Telecommunications Standards Institute) has begun to formulate the NGN functional framework supporting fixed and mobile convergence on the basis of 3G IMS (third-generation mobile communication IP Multimedia Subsystem), as shown in Figure 1, the framework Contains a business layer and a transport layer based on IP (Internet Protocol) technology. [0003] As shown in Figure 1, the described service layer consists of NASS (Network ...

AI Technical Summary

Problems solved by technology

The user's QoS request is represented by the DiffServ tag value in the message in the network. Since the DiffServ tag has only 3 bits, it can only reflect the relative requirements including QoS level and priority, and cannot transmit the QoS parameters desired by the user end-to-end. Including bandwidth, delay, jitter, and packet loss rate, etc., user traffic can only be processed by relative QoS from the network

And it is also impossible to guarantee the QoS of user services based on the availability of network resources

[0013] To sum up, it can be seen that the IntServ / RSVP (Integrated Service / Resource Reservation Protocol), DiffServ (Differential Service) and their policy control models and mechanisms proposed by IETF cannot provide bearer layer UNI (User Network Interface) in NGN networks. ) to the data flow path (i.e., end-to-end) between the UNI, which cannot meet the requirements of business diversity, technical diversity and terminal diversity in NGN

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