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Method and device for detecting E1/T1 link time slot binding mode

A time slot binding and time slot technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as slow speed, low efficiency, and limited applicable scenarios, and achieve high efficiency, fast speed, and wide application range wide effect

Active Publication Date: 2019-03-01
电信科学技术第五研究所有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The method described in the invention patent CN104579835B exhaustively exhausts the combination of time slots, which is inefficient and slow, and its detection method depends on the encoding method of Payload data. Only HDLC-like encoding can be effectively detected, and the applicable scenarios are limited.

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  • Method and device for detecting E1/T1 link time slot binding mode
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  • Method and device for detecting E1/T1 link time slot binding mode

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Embodiment Construction

[0039] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0040] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0041] E1 and T1 differ in transmission rate and synchronization mode, but are similar in the use of time slots. Our country adopts the European E1 standard, so the following description takes the E1 standard as an example, but this technical solution is also applicable to the T1 standard.

[0042] When using E1 to transmit data packets, according to the actual bandwidth needs of users, several time slots can be bound together as an N*64Kbit / s channel; on the other hand, an E1 link can provide multip...

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Abstract

The invention discloses a method and a device for detecting an E1 / T1 link time slot binding mode. The method comprises the following steps: from to-be-detected time slots, preliminarily judging the time slot which changes from an 'idle' state into a 'work' state in continuous M frames as a bound time slot, wherein M is greater than or equal to 2, and M is an integer; for the time slot primarily judged as being bound, recombining the data of the time slot to be Payload data according to bound time slot serialization; removing idle filling in the Payload data, and extracting data frames; and parsing the data frames through a supported link layer protocol. The method and the device provided by the invention have the advantages of fast speed and high efficiency. Under a condition where usage of cache data is not considered, just by one frame of the Payload data, the E1 / T1 link time slot binding mode can be judged, and loss of the Payload data can be reduced. Moreover, the method and the device provided by the invention are not confined to HDLC analogous data, can be applied to a wider range, and also can be automatically adaptive to dynamically changing scenes of the E1 / T1 link time slot binding mode.

Description

technical field [0001] The invention relates to the technical field of communication protocols, in particular to a method and equipment for detecting the binding mode of time slots of an E1 / T1 link. Background technique [0002] E1 and T1 are widely used transmission standards. The E1 standard used in Europe is 32 channels of pulse code modulation (PCM), the sampling rate is 8000 frames per second, each frame is divided into 32 time slots, each time slot is 8 bits, and the transmission rate is 8000*256bit, that is, 2.048Mbit / s; the T1 standard used in North America is 24-way PCM, each frame is divided into 24 time slots, one time slot is 8 bits, and 1 bit is added after every 24*8 bits as frame synchronization, one frame is 193 bits, and the transmission rate It is 8000*193bit, which is 1.544Mbit / s. [0003] E1 and T1 differ in transmission rate and synchronization mode, but are similar in the use of time slots. Our country adopts the European E1 standard, so the followi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04W72/04H04L29/08
CPCH04L43/08H04L69/324H04W72/0446
Inventor 曾勇张铁军俞鹏飞
Owner 电信科学技术第五研究所有限公司
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