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Method and system for realizing net clock non-synchronous multiple E1 service transmission

A technology of business transmission and network clock, which is applied in the direction of transmission system, synchronization signal speed/phase control, electrical components, etc., can solve problems such as asynchrony, and achieve the effect of reliable transmission

Inactive Publication Date: 2010-02-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method and system for realizing the transmission of multiple E1 services with asynchronous network clocks, and to solve the problem that the prior art cannot realize the independent E1 transmission of multiple network clocks based on the DOCSIS protocol

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  • Method and system for realizing net clock non-synchronous multiple E1 service transmission
  • Method and system for realizing net clock non-synchronous multiple E1 service transmission
  • Method and system for realizing net clock non-synchronous multiple E1 service transmission

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Embodiment Construction

[0033] Figure 10 Be the step flow chart of the present invention; A kind of method of the present invention realizes the multiple E1 service transmission of network clock asynchronous, is used for the system based on DOCSIS agreement, as shown in the figure, comprises the following steps:

[0034] Step 100, define the timing unit and frame format of the DOCSIS system;

[0035] Step 200, select the global clock of the DOCSIS system, select the counting clock of the time stamp counter in the synchronization frame of the DOCSIS system as the network clock of one E1 fixed, send the synchronization frame regularly through the downlink to complete the synchronization of the whole system, thereby Realization of several E1 transmissions compatible with network clock synchronization;

[0036] Step 300, using the E1 clock transmission technology to store the network clock information in the synchronization frame, thereby using the synchronization frame to transmit the network clock in...

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Abstract

This invention relates to a method for realizing network clock non-synchronous multiple El service transmission including defining the time unit and the frame form: selecting the global clock used inDOCSIS protocol to select the counting clock of time scale counter in a synchronous frame as the fixed one path El network clock and timely send the synchronous frames to finish the synchronization ofthe entire system by the down link to realize several paths of El transmission of the compatible network clock synchronization, applying El clock transmission technology to store network clock information in the synchronous frames of the radio access system and transfer the network clock information, applying the clock resume technology at the end station to finish the synchronization of the local and the network clocks to realize the total network synchronization of the network clock and process the El data to finish the El service transmission.

Description

technical field [0001] The invention relates to a method and a system for realizing a plurality of E1 service transmissions with asynchronous network clocks under the DOCSIS protocol, in particular to a method and a system for realizing E1 transmission in a broadband wireless access system. Background technique [0002] The DOCSIS protocol (Data-Over-Cable Service Interface Specifications) is a specification for the user-side device-cable modem (CM) that performs bidirectional IP data transmission on a hybrid optical fiber / coaxial network. The DOCSIS protocol itself does not support the transmission of real-time circuit services. The DOCSIS protocol stipulates that MPEG is used as the aggregation layer of MAC frames in the downlink direction, and the transmission of MAC frames is completed with a certain MPEG period. The MPEG frame period is determined by the symbol rate and debugging method. For example, if the symbol rate is 2.56Mbps and the modulation mode is 16QAM, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/04H04L29/06
Inventor 闫华梁程浩
Owner ZTE CORP