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Communication service QoS assurance method, device and system in NAT scene

A technology for communication services and scenarios, which is applied in the field of network communication and can solve the problem of high interface requirements

Active Publication Date: 2012-03-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a QoS guarantee method for communication services in a NAT scenario, aiming to solve the problem that the existing architecture has high requirements for user terminal interfaces

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  • Communication service QoS assurance method, device and system in NAT scene
  • Communication service QoS assurance method, device and system in NAT scene
  • Communication service QoS assurance method, device and system in NAT scene

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] The embodiment of the present invention is based on the PacketCable2.0 standard such as figure 1 As shown in the architecture, when the architecture is applied to a NAT scenario, an access-border gateway function (access-border gateway function, A-BGF) network element is introduced, and by connecting it with a proxy-call session control function (proxy-call session control function, P-CSCF) network elements are connected to complete the NAT traversal of signaling streams and media streams during the communication process, so as to further realize the QoS guarantee of communication services i...

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Abstract

The invention is suitable for the network communication field, and provides a communication service QoS (Quality of Service) assurance method in NAT (Network Address Translation) scene. The method comprises the following steps: an A-BGF (Access-Border Gateway Function) network element is controlled to generate agent SDP (Session Description Protocol) information according to calling SDP information when a user terminal issues a communication request, the SDP information is utilized to replace the calling SDP information to connect the user terminal and a called party, after the two communication parties are successfully connected, a PCRF (Policy and Charging Rules Function) network element is informed to conduct QoS resource reservation, an IP (Internet Protocol) address and a port of the user terminal, which are converted by NAT, from the A-BGF network element, are received, and the PCRF network element is informed to update the source address information of the QoS resource reservation to the IP address and the port of the user terminal, which are converted by NAT. The invention realizes communication service QoS assurance in NAT scene under the premise that the interface of the user terminal is not specially required.

Description

technical field [0001] The invention belongs to the field of network communication, and in particular relates to a communication service QoS guarantee method, device and system in a NAT scene. Background technique [0002] The existing hybrid fiber-coaxial network (hybrid fiber-coaxial, HFC) provides triple play services by combining IP multimedia subsystem (IMS). Telephone (voice over internet protocol, VOIP) services, video conferencing services, Internet services, and interactive TV services and other related data (media streams) are transmitted, and when the network is congested, real-time requirements for VOIP and video conferencing are required Quality of service (QoS) guarantee is performed for high communication services. As one of the QoS guarantee mechanisms in the network, QoS resource reservation, on the premise that the QoS requirements of the media streams of both parties and the media stream encoding scheme are clarified, the calling party starts to establish...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L29/12H04L47/724H04L47/80H04L45/741
CPCH04L61/2503H04L12/569H04W28/0205H04L65/1016H04L65/1069H04L65/80H04L61/2514H04L61/2564H04L65/1045
Inventor 肖磊黄庆彬
Owner HUAWEI TECH CO LTD
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