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Bandwidth adjustment method and broadband access server

A technology of access server and bandwidth adjustment, applied in branch offices providing special services, data exchange details, digital transmission systems, etc., can solve problems such as image quality degradation of IPTV multicast programs, and achieve the effect of preventing congestion and ensuring quality.

Active Publication Date: 2010-09-22
CHINA TELECOM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, assuming that the bandwidth between the DSLAM and the user Modem is 3M, the maximum Internet traffic is 3M, and the IPTV multicast service traffic is 2M, assuming that the son in the family is surfing the Internet at a speed of 3M bandwidth, and at this time the family My father watched an IPTV multicast program with a bandwidth of 2M. At this time, if the quality of the IPTV multicast program is to be guaranteed, the bandwidth between the DSLAM and the user Modem is required to be 5M (3M+2M=5M), and this ideal 5M is greater than the actual The 3M bandwidth between the DSLAM and the Modem is now congested between the DSLAM and the Modem. Since the DSLAM does not have the QoS function, the DSLAM will randomly drop packets and may discard some IPTV multicast service data. packet, resulting in the degradation of the image quality of IPTV multicast programs

Method used

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  • Bandwidth adjustment method and broadband access server
  • Bandwidth adjustment method and broadband access server
  • Bandwidth adjustment method and broadband access server

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Embodiment Construction

[0026] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention.

[0027] figure 1 It is a structural schematic diagram of an existing IPTV multicast service bearer network. Such as figure 1 As shown, the IPTV multicast service bearing network includes: BRAS 102, aggregation switch 104, DSLAM 106, campus switch 108, corridor switch 110, Modem 112, set-top box (STB, Set Top Box) 114, personal computer (PC, Personal Computer) 116 and Hub118.

[0028] The functions of each entity in this network are described in detail below:

[0029]BRAS 102 is used to terminate LAN-based point-to-point communication protocol (PPPoE, Point to Point Protocol over Ethernet), perform DHCP authenti...

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PUM

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Abstract

The invention discloses an bandwidth adjustment method and a broadband access server, wherein the bandwidth adjustment method comprises the following steps of: acquiring an IPTV (Internet Protocol Television) multicast service status of a user by the broadband access server; and when the user applies for IPTV multicast service, turning the bandwidth of service marked by a CVLAN (Customer Virtual Local Area Network) in the user down by the broadband access server so as to ensure the bandwidth for IPTV multicast service traffic. In the invention, the bandwidth traffic of the service marked by the CVLAN is regulated through a user service status learned by the broadband access server, thereby ensuring that a data packet of the IPTV multicast service can not be jammed even at a DSLAM (Digital Subscriber Lane Access Multiplexer) without QoS (Quality of Service) function when the user views the IPTV multicast programs and further guaranteeing the quality of the IPTV multicast service.

Description

technical field [0001] The invention relates to the application field of network television in data communication, and more specifically, relates to a bandwidth adjustment method and a broadband access server. Background technique [0002] When developing Internet Protocol Television (IPTV, Internet Protocol Television) services, telecom operators will choose different implementation plans according to the development of IPTV services in different stages: (1) In the stage of low penetration rate of IPTV services when the number of users is small, telecom operators Providers generally perform multicast replication on Broad-band Remote Access Server / Service Router (BRAS / SR, Broad-band Remote Access Server / Service Router) in order to seize the market by rapidly deploying services; (2) in the stage of high penetration rate of IP services, IPTV services are deployed on a large scale. If replication is performed on the BRAS / SR when there are a large number of users, the bandwidth ...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/18H04L29/06H04L12/801
Inventor 邹洁陈珣许国旺
Owner CHINA TELECOM CORP LTD
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