Priority scheduling method

Abstract

The invention provides a priority scheduling method, comprising a plurality of steps that: step S302, different identification codes are set for at least two different businesses; step S304, a digital subscriber line accesses a multiplexer and captures packet in the downstream data flows by using a data message capture mechanism according to the identification code, the data packet with the identification code indicating a scheduled service is determined as the service data packet of the highest priority; step S306, the priority of the service data packet captured is modified, and the messageafter modifying the priority is forwarded; and step S308, when the downstream bandwidth is not free, the digital subscriber line accessing multiplexer carries out a corresponding hierarchical scheduling according to the priority of the data packet. Thus, a function of priority scheduling can be realized without the operator modifying the existing higher-level device.

Description

technical field [0001] The present invention relates to the field of broadband access communication technology in the Internet, and more specifically, relates to a service model of an interactive network television (IP television, hereinafter referred to as IPTV) in the case that the upper-layer switch does not have the priority mapping capability. IP Digital Subscriber Line Access Multiplexer (IP Digital Subscriber Line Access Multiplexer, hereinafter referred to as IPDSLAM) realizes the priority scheduling function, and guarantees that the IPTV service and ordinary Internet access service can be normally carried out at the same IPDSLAM device port at the same time. Background technique [0002] IPTV is Interactive Network Television, which is a kind of access to broadband network using asymmetric digital subscriber loop (Asymmetrical Digital Subscriber Loop, hereinafter referred to as ADSL) or Ethernet or cable television network, and transmits television signals through In...

AI Technical Summary

Problems solved by technology

[0012] For the downlink business data, it is necessary to set the corresponding 802.1p mark on the upper layer device, so as to ensure that the IPDSLAM will send downlink priority to different PVCs. If the upper layer device does not set the 802.1p mark, the downlink data flow will appear no difference Priority, cannot guarantee IPTV service quality

[0013] But in some specific occasions, the operator does not want to queue up and send different service data due to the configuration of 802.1p priority queues on the upper layer equipment

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