CN101090405A - Fault state transmission method in E1 grade connection configuration - Google Patents
Fault state transmission method in E1 grade connection configuration Download PDFInfo
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- CN101090405A CN101090405A CNA2006100839765A CN200610083976A CN101090405A CN 101090405 A CN101090405 A CN 101090405A CN A2006100839765 A CNA2006100839765 A CN A2006100839765A CN 200610083976 A CN200610083976 A CN 200610083976A CN 101090405 A CN101090405 A CN 101090405A
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Abstract
This invention discloses a fault state transfer method in the E1 stage connection configuration including the following steps: obtaining E1 cascade configuration on a middle node, testing the state of E1 and transferring E1 state information by setting or eliminating E1 remote warning , which increases process on the middle node to realize transfer of fault information on physical layers.
Description
Technical field
Invention relates to the method that the E1 malfunction is transmitted in a kind of E1 cascade application, and the E1 level that relates in particular to a kind of communication field transmission control aspect connects fault state transmission method in the configuration.
Background technology
For E1 interface board by logic realization, the inside annexation between the own processing unit of E1 and interface board and E1 and the E1, by logic realization, can the dynamic flexible configuration.Any one time slot of every pair of E1 input (a pair of E1 is totally 32 time slots) both can be configured to and being connected of this plate processing unit, and also can be configured to be connected with the output of other E1.The flexible configuration of this E1 interface board realizes the basis for functions such as the branch time slot transmission of E1, cascade networking provide.
The remote alarm of E1 is to be sent by far-end to be detected by local terminal then, like this, just can see the alarm of far-end at local terminal.Cause the reason of remote alarm to have following:
1, circuit reason.When situations such as opening circuit appears in circuit, alarm can appear.
2, frame structure goes wrong and causes alarm.
3, the circuit error rate surpasses the lowest bit error rate that circuit allowed, and for example, the error rate can cause alarm when 10%-6%.
Remote alarm also is remote alarm, i.e. opposite equip. alarm (RAI).It is that or error code is excessive because opposite equip. does not receive the E1 signal, and to an alarm signal of local terminal equipment loopback, effect is to notify local terminal equipment.The receipts local terminal is bad, may be that the local terminal transmission is bad, also may be that the opposite end reception is bad, and the intermediate conveyor link is bad when also possible.
Because the E1 chip can only detect the state with self direct-connected E1 circuit receiving end on the interface board,, then can't detect for the non-direct-connected E1 or the state of making a start.This is a kind of defective for the situation of a plurality of nodes by the E1 cascade, if fault occurred with the non-direct-connected E1 circuit of E1 chip, then the E1 chip can't detect this fault, will cause the processor at two end points places of this E1 link can't know the time of day of this E1 like this, in line fault, still send packet, cause the packet loss phenomenon to this circuit.
Summary of the invention
Technical problem solved by the invention provides a kind of E1 level and connects fault state transmission method in the configuration, so that peer node can detect failure condition, realizes the transmission of fault message, two end node routing Problem-Errors when solution cascade E1 breaks down.
Technical scheme of the present invention is as follows:
Fault state transmission method comprises the steps: in the E1 level connection configuration
(1) the E1 cascade that obtains on the intermediate node disposes;
(2) state of detection E1;
(3) transmit the E1 state information by being provided with or removing the E1 remote alarm.
Further, step (1) is specially: obtain the higher level E1 of intermediate node and the corresponding relation of the E1 of subordinate.
Further, corresponding relation described in the step (1) is the annexation one to one of higher level E1 and the E1 of subordinate time slot.
Further, step (2) is specially, and detects the state of 0 time slot of E1, and described 0 time slot is used to represent the state of this E1.
Further, in the step (2), regularly inquire about the E1 chip register, obtain the state of each E1.
Further, in the step (2), the state of described E1 comprises alarm status, and described alarm status comprises catastrophe failure state and remote alarm state, and described catastrophe failure state is that reception carrier is lost, the received frame step-out.
Further, in the step (3), when the E1 of intermediate node detects the catastrophe failure state, need remote alarm be set to higher level E1 and subordinate's E1 both direction; When only detecting the E1 remote alarm, remote alarm is set to next stage E1 direction.
Further, in the step (3), fault delivery is only handled man-to-man E1 configuration.
Further, the present invention also comprises: (4) remove remote alarm.
Further, in the step (4), when catastrophe failure state and remote alarm state just often, remove remote alarm.
Adopt the inventive method, overcome the failure problems that can't detect non-direct connection E1 in the networking of E1 cascade, corrected the E1 routing mistake that causes thus.
At the cascade networking model of intermediate node transparent transmission data, the present invention is by increasing the transmission that processing has realized the fault message on the physical level on the intermediate node.The inventive method is especially effective for the situation that two end nodes of cascade have different software architectures or data frame format, because in this case, two nodes may be structured on the different operating system, software level and data packet format differ greatly, make the intercommunication mutually of application layer become difficult, implement very complicated.And the present invention utilizes remote alarm (RAIS) bit of 0 time slot of E1 dexterously, has realized the transmission of E1 state information easily, and implementation method is simple, and can not influence the software architecture of two nodes.
Description of drawings
Fig. 1 is the fault delivery mechanism description figure on the E1 interface board;
Fig. 2 is the condition table that is provided with or removes remote alarm.
Embodiment
The present invention is directed to this defective in the configuration of E1 cascade, when detecting certain E1 receiving end and break down, making a start and with this E1 time slot corresponding RAIS (remote alarm) bit of making a start of the E1 of cascade relation being arranged of this E1 is set on intermediate node, so that peer node can detect failure condition, the real transmission of seeing fault message, two end node routing Problem-Errors when solution cascade E1 breaks down.In E1, there is time slot corresponding to represent the E1 state, can specify among the E1 any one time slot to represent the E1 state, represent the E1 state with 0 time slot usually, certainly, also can set other time slots and represent the E1 state.
In the technical solution of the present invention, transmit the E1 fault message by 0 time slot RAI bit, fault state transmission method mainly comprises the steps: in the E1 level connection configuration
1, obtains the cascade configuration.
This method at first need be obtained the configuration of E1 cascade on intermediate node before work, just obtain the higher level E1 of this node and the corresponding relation of the E1 of subordinate.
In the inventive method, the cascade configuration is the one to one annexation of E1 to E1.Because one E1 has 32 time slots, hardware logic is supported timeslot-level configuration, and the different time-gap of an E1 can exchange to several different E1; Equally, the time slot of several E1 also can exchange to same E1, like this will draw the pair relationhip of one-to-many, many-one, multi-to-multi.For the cross-over configuration of such more complicated, it is mixed and disorderly and nonsensical that the transmission of E1 fault message becomes.Therefore, need handle for the configuration of logic, remove the annexation of those one-to-manies, many-one and multi-to-multi, only keep man-to-man configuration, fault delivery is only handled man-to-man E1 configuration.
2, detect the E1 state.
One road E1 has 32 time slots, and wherein 0 time slot is used for representing the state of this E1, and any fault takes place E1, can both reflect in 0 time slot.Mainly comprise following several alarm, FRCL (reception carrier is lost), RLOS (received frame step-out), RAIS (far-end), SLIP (slip) chooses two classes from these alarms, the first kind is called the catastrophe failure state, comprise FRCL and RLOS, this class alarm is considered to fatal, in case appearance just should inaccessible this E1.Second class is RAIS, is called the remote alarm state, and it can call by BSP (integrated circuit board support package) making a start of E1, is provided with artificially or removes, and the E1 chip of receiving end can detect the state variation that this operation of making a start causes.When making a start RAIS being set, receiving end can detect the RAIS alarm, and when removing RAIS when making a start, receiving end detects no RAIS alarm.
The inventive method is regularly inquired about the E1 chip register, obtains each E1 state, and from wherein selecting above-mentioned two classes alarm independent process.Time span regularly can be provided with according to actual needs, and in this preferred embodiment, the time span of this timing is 8 seconds.
3, the RAI alarm is transmitted
Every couple of E1 is preserved two class states, and a class is catastrophe failure state (referring to FRCL and RLOS), and another kind of is remote alarm state (referring to RAIS).When detecting E1 catastrophe failure state, need the RAI alarm be set to higher level and subordinate's both direction, when only detecting the E1 remote alarm, only need the RAI alarm to be set to the next stage direction.
Shown in seeing figures.1.and.2, the fault message pass through mechanism is specifically described.
Among Fig. 1, three node A, B, C connect together by two pairs of E1 levels, are example explanation processing procedure with the Node B.When Node B detects the E0_IN catastrophe failure (finger records ripple and loses FRCL and received frame step-out RLOS), need E0_OUT and E1_OUT are put remote alarm; When detecting the E0_IN remote alarm, need E1_OUT is put remote alarm.In like manner, when Node B detects E1_IN fault (FRCL and RLOS), need E0_OUT and E1_OUT are put remote alarm; When detecting the E1_IN remote alarm, need E0_OUT is put remote alarm.
When removing the remote alarm operation, need to judge according to a plurality of states of related E1.For example,, must judge catastrophe failure state, the remote alarm state of E0_IN and the catastrophe failure state of E1_IN of E0_IN earlier, have only the three kinds of remote alarms that all normally could remove E1_OUT if remove the remote alarm of E1_OUT.
Fig. 2 has listed Fig. 1 and has disposed down, is provided with or removes the actual conditions of E0_OUT, E1_OUT remote alarm.A plurality of conditions that remote alarm is set be " or " relation, when the remote alarm of E0_OUT for example is set, as long as E0_IN catastrophe failure, E1_IN catastrophe failure or one of them appearance of E1_IN remote alarm; A plurality of conditions of removing remote alarm be " with " relation, for example, if remove the remote alarm of E0_OUT, must judge catastrophe failure state, the catastrophe failure state of E1_IN and the remote alarm state of E1_IN of E0_IN earlier, have only the three kinds of remote alarms that all normally could remove E0_OUT.
At the cascade networking model of intermediate node transparent transmission data, the present invention handles by increasing on intermediate node, has realized the transmission of the fault message on the physical level.This method is especially effective for the situation that two end nodes of cascade have different software architectures or data frame format, because in this case, two nodes may be structured on the different operating system, software level and data packet format differ greatly, make the intercommunication mutually of application layer become difficult, implement very complicated.And the present invention utilizes the RAIS bit of 0 time slot of E1, has realized the transmission of E1 state information, and implementation method is simple, and can not influence the software architecture of two nodes.
Claims (10)
1, a kind of E1 level connects fault state transmission method in the configuration, comprises the steps:
(1) the E1 cascade that obtains on the intermediate node disposes;
(2) state of detection E1;
(3) transmit the E1 state information by being provided with or removing the E1 remote alarm.
2, E1 level according to claim 1 connects fault state transmission method in the configuration, it is characterized in that step (1) is specially: obtain the higher level E1 of intermediate node and the corresponding relation of the E1 of subordinate.
3, E1 level according to claim 2 connects fault state transmission method in the configuration, it is characterized in that corresponding relation described in the step (1) is the annexation one to one of higher level E1 and the E1 of subordinate time slot.
4, E1 level according to claim 1 connects fault state transmission method in the configuration, it is characterized in that step (2) is specially, and detects the state of 0 time slot of E1, and described 0 time slot is used to represent the state of this E1.
5, E1 level according to claim 4 connects fault state transmission method in the configuration, it is characterized in that, in the step (2), regularly inquires about the E1 chip register, obtains the state of each E1.
6, E1 level according to claim 4 connects fault state transmission method in the configuration, it is characterized in that, in the step (2), the state of described E1 comprises alarm status, described alarm status comprises catastrophe failure state and remote alarm state, wherein, described catastrophe failure state is that reception carrier is lost, the received frame step-out.
7, E1 level according to claim 1 connects fault state transmission method in the configuration, it is characterized in that, in the step (3), when the E1 of intermediate node detects the catastrophe failure state, need remote alarm be set to higher level E1 and subordinate's E1 both direction; When only detecting the E1 remote alarm, remote alarm is set to next stage E1 direction.
8, E1 level according to claim 1 connects fault state transmission method in the configuration, it is characterized in that, in the step (3), fault delivery is only handled man-to-man E1 configuration.
9, connect fault state transmission method in the configuration according to each described E1 level of claim 1 to 8, it is characterized in that, also comprise:
(4) remove remote alarm.
10, E1 level according to claim 9 connects fault state transmission method in the configuration, it is characterized in that, in the step (4), when catastrophe failure state and the remote alarm state of the upper level E1 of intermediate node are removed, and when the catastrophe failure state of this node next stage E1 is removed, remove the remote alarm of this node next stage E1.
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| CN2006100839765A CN101090405B (en) | 2006-06-16 | 2006-06-16 | Fault state transmission method in E1 grade connection configuration |
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| CN2006100839765A CN101090405B (en) | 2006-06-16 | 2006-06-16 | Fault state transmission method in E1 grade connection configuration |
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| CN101090405B CN101090405B (en) | 2011-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009092305A1 (en) * | 2008-01-14 | 2009-07-30 | Huawei Technologies Co., Ltd. | Method, apparatus and system for distinguishing states of sub-frames in a cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2648715Y (en) * | 2003-07-02 | 2004-10-13 | 西安大唐电信有限公司 | Multi-interface E1 data collector |
| CN100382622C (en) * | 2003-12-04 | 2008-04-16 | 华为技术有限公司 | Method for transforing base station environment monitoring information |
| CN100359859C (en) * | 2004-08-27 | 2008-01-02 | 中兴通讯股份有限公司 | Transmission network management switching-in method and apparatus for radio insertion network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009092305A1 (en) * | 2008-01-14 | 2009-07-30 | Huawei Technologies Co., Ltd. | Method, apparatus and system for distinguishing states of sub-frames in a cell |
| CN101489184B (en) * | 2008-01-14 | 2010-12-08 | 华为技术有限公司 | Method, apparatus and system for differentiating intra-district sub-frame state |
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| CN101090405B (en) | 2011-01-19 |
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