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Method and device for crossing time slot

A time slot crossover and time slot technology, applied in the field of communication, can solve the problems of lack of service quality, inability to realize multi-service unified cross plane, inability to realize dynamic bandwidth adjustment, etc., to achieve the effect of reducing waste

Active Publication Date: 2013-06-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of research and practice of the prior art, the inventor of the present invention found that: due to the multiple cross-scheduling modes in the existing metropolitan area network, the multi-service unified cross-plane cannot be realized, and there is no strict quality of service (QoS, Quality of Service), and cannot achieve dynamic bandwidth adjustment

Method used

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  • Method and device for crossing time slot
  • Method and device for crossing time slot
  • Method and device for crossing time slot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An embodiment of the present invention provides a time slot interleaving method, see figure 1 As shown, the method includes:

[0027] Step 1: receiving a transmission convergence layer (TC, Transmission Convergence) frame;

[0028] Wherein, the specific method for receiving the TC frame of the physical layer in step 1 may include:

[0029] Step A1: Search for TC frames;

[0030] Wherein, the specific method of searching for the TC frame in step A1 is to realize the search for the TC frame by searching for a fixed bit pattern at the frame header.

[0031] Step A2: Perform serial-to-parallel conversion on the found TC frames to obtain parallel TC frames;

[0032] Step A3: performing frame alignment on the acquired parallel TC frames;

[0033] Step A4: Descrambling the aligned TC frames.

[0034] Through the above steps A1 to A4, devices in the network can obtain uplink TC frames at the channel layer. It is convenient for network equipment to cross-schedule service d...

Embodiment 2

[0051] An embodiment of the present invention provides a time slot interleaving method, which is similar to the time slot interleaving method provided in Embodiment 1. The difference is that, compared with the method provided in Embodiment 1, the method provided in this embodiment is a more Preferred, more specific embodiments. see image 3 shown. include:

[0052] Steps Y1 to Y4 are similar to Steps A1 to A4 in Embodiment 1, and the descrambled TC frame is finally obtained. For details, please refer to Embodiment 1;

[0053] Step Y5: Extracting the time slot unit and frame header in the TC frame;

[0054] Wherein, the method for specifically extracting the time slot unit and the frame header in step Y5 may be that the input port in the crossover device counts the bytes of the input TC frame, and the frame header and the time slot can be extracted according to the format of the preset TC frame. Gap unit.

[0055] Step Y6: discarding the frame header extracted in step Y5; ...

Embodiment 3

[0071] The implementation of the present invention provides a time slot crossover method, which is based on the time slot crossover method provided in Embodiment 2. When the crossover device receives the bandwidth adjustment information sent by the upper layer of the network, it will adjust the adjusted The bandwidth information is written into the standby cross-connect time slot table, therefore, the cross-connect device needs to perform cross-connect processing according to the standby cross-connect time slot table. The method will be described in conjunction with Embodiment 2 below. The method provided in this embodiment includes step Y1 to step Y9 in the second embodiment. After step Y5 or step Y6 and before step Y7, the method includes:

[0072] Step W1: Determine whether the time slot unit in the currently extracted TC frame is the same as the time slot unit in the last extracted TC frame, specifically, determine whether the bandwidth map in the T-CONT frame in the TC fr...

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Abstract

The embodiment of the invention discloses a method and a device for crossing time slots. The method comprises the following steps of: receiving a transmission convergence layer (TC) frame and extracting at least one time slot unit from payload of the TC frame, wherein each time slot unit has different units; performing crossed scheduling on the extracted time slot unit according to the preset time slot table; and outputting a crossed TC frame according to the preset generating frame header information and the crossed scheduling result, wherein a bandwidth map in the crossed TC frame at least comprises an initial position and an end position of the time slot unit, and the payload of the crossed TC frame comprises the time slot unit. The embodiment of the invention also provides an exchangedevice. In the technical scheme provided by the embodiment of the invention, the time slot units in the crossed TC frame do not need to supplement idle data to ensure that each time slot unit has thesame unit, so that the waste of bandwidth resource is reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a time slot crossover method and crossover device. Background technique [0002] Existing networks carry various services, such as voice, video, online games, and web browsing. The time slot crossover technology plays an important role in supporting the transmission of various service data in the network. By adopting the time slot crossover technology, the equipment centralizes the service data, classifies the service data, and sends the service data to the target address, so that each The transmission path of such business data in the network is more reasonable. [0003] The current MAN network includes: Synchronous Digital Hierarchy (SDH, Synchronous Digital Hierarchy), Multi-service Transport Platform (MSTP, multi-service transport platform), Packet Transmission Network (PTN, Package Transmission Net), Layer 2 Ethernet, etc. form. Therefore, multiple transmis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/04H04L12/70H04L12/863
Inventor 李江周建林李汉国胡幸申小军
Owner HUAWEI TECH CO LTD
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