CN100426734C

CN100426734C - Method for monitoring and managing synchronous digital system / synchronous optic fiber network

Info

Publication number: CN100426734C
Application number: CNB2003101031193A
Authority: CN
Inventors: 陈可加; 胡端刚; 马小龙; 廖志权
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2003-10-31
Filing date: 2003-10-31
Publication date: 2008-10-15
Anticipated expiration: 2023-10-31
Also published as: CN1612530A

Abstract

The present invention relates to a method for flexibly monitoring and managing a synchronous digital hierarchy / synchronous optical network by picking up or inserting the overhead byte in the optional position of the synchronous digital hierarchy / synchronous optical network. The present invention comprises steps that on a sending end, the overhead byte is inserted on the optional position of the signal section overhead. On a receiving end, the optional position that the sending end downward inserts the section overhead is picked up. The overhead byte is used for monitoring and managing the synchronous digital hierarchy / synchronous optical network. The method has the advantages of high flexibility and good expandability.

Description

The method of a kind of monitoring and management SDH (Synchronous Digital Hierarchy)/synchronous optical network

Technical field

The present invention relates to the method for a kind of monitoring and management SDH (Synchronous Digital Hierarchy)/synchronous optical network, relate in particular to a kind of optional position of passing through in SDH (Synchronous Digital Hierarchy)/synchronous optical network expense and extract or the insertion overhead byte, and monitor and manage SDH (Synchronous Digital Hierarchy)/synchronous optical network method flexibly.

Background technology

The function of SDH (SDH (Synchronous Digital Hierarchy)) expense is that the SDH signal is carried out monitoring management, the classification of monitoring can the section of being divided into layer monitoring, channel layer monitoring.The monitoring of section layer is divided into the monitoring of regenerator section layer and multiplex section layer again, and the channel layer monitoring is divided into the monitoring of higher order path layer and low order channel layer.Realized monitoring thus to STM-N refinement layer by layer.For example to the monitoring of 2.5G system, RSOH is to whole STM-16 signal monitoring, and MSOH refine to any of 16 STM-1 wherein, realizes the multilevel monitor to SDH thus.SDH is used for realizing that the expense of monitoring is as shown in table 1, and the A1 in the table 1, A2 are frame head indication bytes, and J0, D1～D12, E1, E2, F1, B1, B2, K1, K2, M1, S1 etc. are the expenses that realizes monitoring function.

The function of SONET (synchronous optical network) expense is to finish to provide the monitoring management function to sonet signal, and the classification that transmits the expense monitoring can the monitoring of the section of being divided into layer, line layer is monitored.SONET is used for realizing that the expense of monitoring is as shown in table 2, and the A1 in the table 2, A2 are frame head indication bytes, and J0, D1～D12, E1, E2, F1, B1, B2, K1, K2, M1, S1, Z0～Z2 etc. are the expenses that realizes monitoring function.

At present, a kind of method that realizes SDH/SONET monitoring and management is to realize by the fixed overhead (seeing Fig. 1 and Fig. 2) of agreement/GR-253-CORE agreement regulation G.707.This technology can only realize the SDH management and the monitoring of existing protocol regulation, because present SDH/SONET technology is also perfect constantly, this technology does not have extendibility, in the networking of complexity and distinct device merchant's butt joint with restricted.

In addition, SDH/SONET also can increase monitoring and the management that overhead is realized SDH/SONET by the fixed overhead (seeing Fig. 1 and Fig. 2) of agreement G.707/GR-253-CORE agreement regulation with in the fixed position.With respect to first kind of technology, in flexibility, increase.But because at fixed position introducing overhead byte, when docking with other equipment supplier, if and the overhead byte position of other supplier regulation is different, to cause this position byte of we or the other side unavailable or can not transparent transmission, when causing operator to adopt the equipment network of different manufacturers, the network management of across a network is difficult unusually.

Content of the present invention

The present invention makes for the problems referred to above that solve prior art.A kind of method that provides is provided, monitors and manage SDH (Synchronous Digital Hierarchy)/synchronous optical network neatly, and have good expandability.

For achieving the above object, the invention provides the method for a kind of monitoring and management SDH (Synchronous Digital Hierarchy)/synchronous optical network, may further comprise the steps:, under the optional position of the section overhead of signal, insert overhead byte at transmitting terminal; At receiving terminal the overhead byte that is inserted into the optional position in the section overhead under the transmitting terminal is extracted, and utilize described overhead byte that SDH (Synchronous Digital Hierarchy)/synchronous optical network is monitored and managed.Described position of being inserted overhead byte down is arbitrarily optionally, preferably provides the row at its place, the row at place, the degree of depth at place by external interface.The maximum of the described degree of depth be SDH (Synchronous Digital Hierarchy)/synchronous optical network signal interleave the number of plies.Described signal is meant OC-3, OC-12, OC-48, the OC-192 in the STM-1 of SDH system, STM-4, STM-16, STM-64, STM-256 and SONET system.The receiving position of the overhead byte that described receiving terminal is set is put identical with the following slot of the overhead byte that transmitting terminal is set.

By the solution of the present invention,, accomplished to dock any apparatus supplier's transmission equipment because the configurability of the position of expense has solved owing to the different problem that can not dock that causes in distinct device supplier's special overhead byte position; Its expandability can improve the expandability of SDH/SONET system monitoring and administration overhead, improve the overhead management function, owing to can also roll up the undefined function of existing protocol; Can make simultaneously the position of expansion byte of SDH/SONET system monitoring and administration overhead optional, have the flexibility of height, can place overhead byte arbitrarily according to concrete needs.

Description of drawings

Fig. 1 is a SDH section overhead schematic diagram;

Fig. 2 transmits the expense schematic diagram for SONET.

Embodiment

Below in conjunction with accompanying drawing feature of the present invention and technology contents are elaborated.Only for reference and the explanation usefulness of accompanying drawing is not limitation of the present invention.

In the SDH system, receiving terminal the section overhead of STM-1 (or STM-4, STM-16, STM-64, STM-256) in the overhead byte of optional position extract; At transmitting terminal, can be in the section overhead of STM-1 (or STM-4, STM-16, STM-64, STM-256) the following slotting overhead byte of optional position, this position that can extract, can descend slotting overhead byte arbitrarily is arbitrarily optionally, its position can provide the row at its place, the row at place, the degree of depth at place to select arbitrarily by external interface, wherein the maximum of the degree of depth is the number of plies that interleaves of SDH, and for example the maximum number of lines of STM-64 is 9, maximum number of column is 9, depth capacity is 64.Put when the same when slot under the overhead byte that overhead byte receiving position that receiving terminal is set and transmitting terminal are set, just can finish the butt joint communication of transmitting-receiving.

In SDH, as shown in Figure 1, overhead byte flexible0 transmitting terminal by external interface by under be inserted into the optional position of SDH signal, described external interface provides row, column, the degree of depth at flexible0 place, in the present embodiment, its position is: the 3rd row, the 2nd row, the 1st degree of depth;

Equally, overhead byte flexible1 transmitting terminal by external interface by under be inserted into the optional position of SDH signal, described external interface provides row, column, the degree of depth at flexible1 place, in the present embodiment, its position is: eighth row, the 9th row, the 1st degree of depth.

Receiving terminal will be at the 3rd row, the 2nd row of SDH signal, the 1st degree of depth receives flexible0, at eighth row, the 9th row of SDH signal, the 1st degree of depth receives flexible1, and wherein row, column, the degree of depth at flexible0 and flexible1 place are provided by external interface.

In the SONET system, receiving terminal the section overhead of OC-3 (or OC-12, OC-48, OC-192) in the overhead byte of optional position extract; At transmitting terminal, can be in the section overhead of OC-3 (or OC-12, OC-48, OC-192) the following slotting overhead byte of optional position, this position that can extract, can descend slotting overhead byte arbitrarily is arbitrarily optionally, its position can provide the row at its place, the row at place, the degree of depth at place to select arbitrarily by external interface, wherein the maximum of the degree of depth is the number of plies that interleaves of SONET, and for example the maximum number of lines of OC-192 is 9, maximum number of column is 9, depth capacity is 64.Put when the same when slot under the overhead byte that overhead byte receiving position that receiving terminal is set and transmitting terminal are set, just can finish the butt joint communication of transmitting-receiving.

In the SONET system, in Fig. 2, overhead byte flexible2 transmitting terminal by external interface by under be inserted into the optional position of SDH signal, described external interface provides row, column, the degree of depth at flexible2 place, in the present embodiment, its position is: the 3rd row, the 2nd row, the 1st degree of depth;

Equally, overhead byte flexible3 transmitting terminal by external interface by under be inserted into the optional position of SDH signal, described external interface provides row, column, the degree of depth at flexible3 place, in the present embodiment, its position is: eighth row, the 5th row, the 1st degree of depth;

Equally, in SONET, receiving terminal is at the 3rd row, the 2nd row of SDH signal, the 1st degree of depth receives flexible2, at eighth row, the 5th row of SDH signal, the 1st degree of depth receives flexible3, and wherein row, column, the degree of depth at flexible2 and flexible3 place are provided by external interface.

More than the preferred embodiments of the present invention are described in detail for illustrative purposes; but those of ordinary skill in the art is to be appreciated that; under the situation of scope and spirit of the present invention; various improvement, interpolation and replacement all are possible, and all in the protection range that claim of the present invention limited.

Claims

1. the method for a monitoring and management SDH (Synchronous Digital Hierarchy) or synchronous optical network may further comprise the steps:

1), under the optional position of the section overhead of the signal of described SDH (Synchronous Digital Hierarchy) or synchronous optical network, inserts overhead byte at transmitting terminal;

2), the overhead byte of the optional position of the section overhead of the signal that is inserted into described SDH (Synchronous Digital Hierarchy) or synchronous optical network under the transmitting terminal is extracted, and utilize described overhead byte that SDH (Synchronous Digital Hierarchy) or synchronous optical network are monitored and managed at receiving terminal;

Wherein, the overhead byte of inserting under transmitting terminal is identical with the row, column and the degree of depth of the corresponding overhead byte that extracts at receiving terminal, and provides by external interface.

2. the method for monitoring according to claim 1 and management SDH (Synchronous Digital Hierarchy) or synchronous optical network, the signal that it is characterized in that described SDH (Synchronous Digital Hierarchy) or synchronous optical network are meant OC-3, OC-12, OC-48, the OC-192 in STM-1, STM-4, STM-16, STM-64, STM-256 or the synchronous optical network of SDH (Synchronous Digital Hierarchy).