Scheduling apparatus and method for real-time service

A technology of real-time business and scheduling device, applied in the field of communication, can solve problems such as packet loss in real-time business scheduling, and achieve the effects of reducing packet loss rate, good time guarantee, and guaranteeing delay requirements

Inactive Publication Date: 2009-01-07
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of packet loss in real-time service scheduling, and at the same time meet the QoS requirements, and propose a real-time service scheduling device and scheduling method

Method used

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  • Scheduling apparatus and method for real-time service
  • Scheduling apparatus and method for real-time service
  • Scheduling apparatus and method for real-time service

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Embodiment Construction

[0032] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0033] The core idea of ​​the present invention is to put SDUs of different real-time service types into the unified SDU queue established in advance according to the set priority. When scheduling, first schedule the SDUs in the unified SDU queue, and then schedule each SDU queue For the SDU in , the priority is a time limit coefficient set according to the time limit sensitivity of SDUs of different service types.

[0034] The basic process of the inventive method, such as figure 1 shown, including:

[0035] Step 1: Establish SDU queues according to different real-time service types;

[0036] Step 2: Put the SDUs into the corresponding SDU queues respectively;

[0037] Step 3: set the priority of the SDU queue, and put the SDUs in the SDU queue into the unified SDU queue according to the priority;

[0038] Step 4: Scheduling the SDUs in t...

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Abstract

The invention discloses a device for dispatching a real-time service and a method thereof, which comprises: according to the types of different real-time services, SDU queues are established respectively; the SDU is put in the corresponding SDU queues respectively; priority of the SDU queues is set, and the SDU in the SDU queues is uniformly put in the SDU queues in sequence according to the priority; and the SDU in the SDU queues is dispatched uniformly. In the dispatching method of the invention, time limit coefficient and the uniform SDU queues are introduced, SDU which has pressing time requirement can be guaranteed to be dispatched in time, being lost can be avoided for overtime of dispatching, better time guaranteeing performance is provided, and the effects can be realized that the rate of losing packet is lowered and time delay requirement can be guaranteed.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a real-time service scheduling technology. Background technique [0002] At present, the OFDM system based on the IEEE802.16 protocol supports five types of downlink data transmission services: UGS (Unsolicited grant service, real-time periodic constant rate service), RT-VR (Real-Time Variable Rate, real-time variable rate service), NRT-VR (Non-Real-Time Variable Rate, non-real-time variable rate service), BE (BestEffort, best effort service) and ERT-VR (Extended Real-Time Variable Rate, extended real-time variable rate service). UGS, ERT-VR and RT-VR are real-time services, NRT-VR is non-real-time service, and BE is best-effort service. The QoS requirements of the above five service types are different, so the scheduling methods are also different. [0003] QoS (Quality of Service) refers to the performance of a packet or flow passing through a network, which is described...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L47/6275
Inventor 吴冬凌王璐
Owner ZTE CORP
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