CN100341339C - Chain circuit fault recovering method - Google Patents
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- CN100341339C CN100341339C CNB200310113232XA CN200310113232A CN100341339C CN 100341339 C CN100341339 C CN 100341339C CN B200310113232X A CNB200310113232X A CN B200310113232XA CN 200310113232 A CN200310113232 A CN 200310113232A CN 100341339 C CN100341339 C CN 100341339C
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Abstract
The present invention discloses a chain circuit fault recovering method which is applied under a transparent transmission networking mode. The transparent transmission networking mode is characterized in that message transmitting equipment transparently transmits messages to the message transmitting equipment of the other party by providing transparent transmission channel equipment of a transparent transmission channel. The method comprises: the message transmitting equipment detects the failure of the transparent transmission channel equipment; the message transmitting equipment selects new transparent transmission channel equipment for providing the transparent transmission channel according to a pre-stored list of candidate transparent transmission channel equipment; then, the mark of the selected transparent transmission channel equipment is informed to the message transmitting equipment of the other party, and the message transmitting equipment of the other party selects the transparent transmission channel equipment corresponding to the mark of the current transparent transmission channel equipment for providing the transparent transmission channel. The method of the present invention ensures normal communication between the message transmitting equipment.
Description
Technical field
The present invention relates to the link failure recovery technology, refer to especially the link failure recovery method under a kind of transparent transmission networking mode.
Background technology
Attaching position register (HLR) and mobile switching centre (MSC) are existing equipment in the GSM, and Lawful Interception Center (LIC) is realized the monitoring to the target UE communication activity by access HLR and MSC.
Fig. 1 is the traditional group net mode schematic diagram of HLR, MSC and LIC, as shown in Figure 1, links to each other by C interface between HLR and MSC, also can link to each other by network such as transmission network, signaling network etc. between HLR and MSC. LIC links to each other by the Xa interface with MSC, and LIC links to each other by the Xb interface with HLR. For improving the confidentiality of monitoring activity, Xa and Xb interface are private line access usually. Under the above-mentioned networking mode, LIC need to GSM in each HLR, MSC set up private line access, increased the cost of monitoring activity, therefore, propose the transparent transmission networking plan of HLR, MSC and LIC, simplify the networking structure of HLR, MSC and LIC, thereby reduce the cost of monitoring activity.
Fig. 2 is the transparent transmission networking mode schematic diagram of HLR, MSC and LIC, as shown in Figure 2, owing to set up annexation between HLR and MSC, therefore LIC is with after MSC links to each other by the Xa interface, can access HLR by MSC, mutual information exchange is crossed the MSC transparent transmission between LIC and HLR, thereby simplifies the annexation of equipment in LIC and the GSM. Although do not have direct physical connection relation between LIC and HLR, the logic interfacing between LIC and HLR still exists, and identical with Xb interface among Fig. 1, and dotted line represents that the Xb interface message by the MSC transparent transmission is carried out communication between LIC and HLR among the figure.
Fig. 3 is transparent transmission message transmitting procedure schematic diagram, as shown in Figure 3, comprise a plurality of MSC and a plurality of HLR in the GSM, target UE is realized that the LIC that monitors also has a plurality of, one-to-one relationship when emphasizing between LIC and HLR transmission transparent transmission message only has a HLR and a LIC among Fig. 3. The Xb interface message of transmitting between MSC2 transparent transmission LIC and HLR.
HLR may further comprise the steps to the process that LIC sends Xb interface message a:
Step 311～step 312:HLR is encapsulated in Xb interface message a in the transparent transmission message data of C interface, then sends the transparent transmission message that carries purpose LIC sign to MSC2; After MSC2 received this transparent transmission message, the LIC sign according to this transparent transmission message is carried was encapsulated in Xb interface message a in the transparent transmission message data of Xa interface, sends to the LIC corresponding to the LIC sign; After LIC received this transparent transmission message, the data in this transparent transmission message of decoding obtained Xb interface message a.
LIC may further comprise the steps to the process that HLR sends Xb interface message b:
Step 321～step 322:LIC is encapsulated in Xb interface message b in the transparent transmission message data of Xa interface, then sends the transparent transmission message that carries purpose HLR sign to MSC2; After MSC2 received this transparent transmission message, the HLR sign according to this transparent transmission message is carried was encapsulated in Xb interface message b in the transparent transmission message data of C interface, sends to the HLR corresponding to the HLR sign; After HLR received this transparent transmission message, the data in this transparent transmission message of decoding obtained Xb interface message b.
Be to increase the security of Xb interface message, be packaged into again transparent transmission message data after can the Xb interface message encrypting, the MSC data that only transparent transmission is corresponding after encrypting.
In the practical application; but the Xb interface message that any MSC transmits between transparent transmission LIC and HLR; time sequencing for the Xb interface message that guarantees to transmit between LIC and HLR; and make things convenient for equipment control; usually can specify certain MSC to provide pass-through channel for the Xb interface message of transmitting between LIC and HLR; for example, specify MSC1 to provide pass-through channel for the Xb interface message of transmitting between HLR1 and LIC1, specify MSC2 to provide pass-through channel for the Xb interface message of transmitting between HLR2 and LIC3. If provide pass-through channel by a plurality of MSC for the Xb interface message between LIC and HLR, when a MSC breaks down therein, although the communication between LIC and HLR can not interrupted, but the MSC that breaks down can abandon the Xb interface message of its transparent transmission, thereby has a strong impact on the normal communication between LIC and HLR. In addition, for the Xb interface message between LIC and HLR provides pass-through channel, be difficult to guarantee the time sequencing of the Xb interface message transmitted between LIC and HLR by a plurality of MSC.
As seen from the above description, when the Xb interface message of transmitting between for LIC and HLR provides the MSC of pass-through channel to break down, with the communicating interrupt that makes between LIC and HLR, cause to carry out normal communication between LIC and HLR.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of link failure recovery method, guarantee the normal communication of transmission of messages equipment room under the transparent transmission networking mode.
In order to achieve the above object, the invention provides a kind of link failure recovery method, be applied under the transparent transmission networking mode, described transparent transmission networking mode passes through the other side transmission of messages equipment by the current current pass-through channel equipment of pass-through channel that provides with message for transmission of messages equipment, and the method includes the steps of:
A, transmission of messages Equipment Inspection are to current pass-through channel device fails;
B, described transmission of messages equipment are according to pre-stored candidate's pass-through channel list of devices, select new pass-through channel equipment as the current current pass-through channel equipment that pass-through channel is provided, then notify the other side's transmission of messages equipment with the pass-through channel device identification of described selection, the other side's transmission of messages equipment is selected to provide pass-through channel corresponding to the pass-through channel equipment of described pass-through channel device identification.
Described steps A may further comprise the steps:
A1, in transmission of messages equipment, set in advance pass-through channel equipment fault timer, after transmission of messages equipment and the other side's transmission of messages equipment connect, start pass-through channel equipment fault timer;
When A2, timing arrived pass-through channel equipment fault timing, transmission of messages equipment was not received the link detecting message that the other side's transmission of messages equipment sends yet in scheduled time scope, determine current pass-through channel device fails.
Further comprise after the described step B: transmission of messages equipment and the other side's transmission of messages device reset pass-through channel equipment fault timer.
Described steps A 1 further comprises: set in advance the link detecting timer of transmission of messages equipment, after transmission of messages equipment and the other side's transmission of messages equipment connect, start the link detecting timer;
Further comprise before the described steps A 2: when timing arrived the link detecting timing, transmission of messages equipment sent link detecting message, the link detecting that then resets timer to the other side's transmission of messages equipment; After described the other side's transmission of messages equipment was received link detecting message, pass-through channel equipment fault timer resetted.
Further comprise after the described step B: transmission of messages equipment and the other side's transmission of messages device reset link detecting timer.
Described link detecting message carries the current current pass-through channel device identification that pass-through channel is provided.
The timing length that described link detecting timer is set is not more than the timing length of described pass-through channel equipment fault timer.
Pre-stored candidate's pass-through channel list of devices comprises described in the step B: when transmission of messages equipment and the other side's transmission of messages equipment connect, the transmission of messages equipment of initiating to connect selects to provide the pass-through channel equipment of initial pass-through channel, and definite candidate's pass-through channel list of devices, storage provides pass-through channel device identification and candidate's pass-through channel list of devices of initial pass-through channel.
Described storage provides after the pass-through channel device identification and candidate's pass-through channel list of devices of initial pass-through channel, further comprise: the transmission of messages equipment of initiating to connect sends pass-through channel device identification and the candidate's pass-through channel list of devices that initial pass-through channel is provided, described pass-through channel device identification and the described candidate's pass-through channel list of devices that initial pass-through channel is provided of the other side's transmission of messages device storage to the other side's transmission of messages equipment.
The transmission of messages equipment that initiate to connect is according to pass-through channel place capacity or pass-through channel device processes ability or pass-through channel equipment load balance, selects to provide the candidate's pass-through channel equipment that comprises in the pass-through channel equipment of initial pass-through channel or the candidate's pass-through channel list of devices.
Described definite candidate's pass-through channel list of devices comprises: determine candidate's pass-through channel device identification of comprising in candidate's pass-through channel list of devices and the order of each candidate's pass-through channel equipment in candidate's pass-through channel list of devices.
Described in the step B according to pre-stored candidate's pass-through channel list of devices, select new pass-through channel equipment to comprise as the current current pass-through channel equipment of pass-through channel that provides: according to the order of the candidate's pass-through channel equipment in candidate's pass-through channel list of devices of determining, to select a new pass-through channel equipment as the current current pass-through channel equipment that pass-through channel is provided.
According to the proposed method, under the transparent transmission networking mode, when the pass-through channel device fails, provide the transmission of messages equipment of pass-through channel can be according to pre-stored candidate's pass-through channel list of devices by pass-through channel equipment, select new pass-through channel equipment that pass-through channel is provided, thereby guaranteed the normal communication of transmission of messages equipment room. In addition, the invention allows for corresponding link failure detection method, by regularly sending link detecting message to the other side's transmission of messages equipment, whether know provides the pass-through channel of pass-through channel equipment to break down, if in the pass-through channel equipment fault timer timing of setting, do not receive the link detecting message that the other side's transmission of messages equipment sends, then think the pass-through channel device fails.
Description of drawings
Fig. 1 is the traditional group net mode schematic diagram of HLR, MSC and LIC;
Fig. 2 is the transparent transmission networking mode schematic diagram of HLR, MSC and LIC;
Fig. 3 is transparent transmission message transmitting procedure schematic diagram;
Fig. 4 is link detecting and fault recovery flow chart.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Among the present invention, under the transparent transmission networking mode, when the communication for the transmission of messages equipment room provides the pass-through channel device fails of pass-through channel, transmission of messages equipment can be according to previously selected candidate's pass-through channel list of devices, select new pass-through channel equipment to provide pass-through channel for the subsequent communications of transmission of messages equipment room, thereby keep the normal communication of transmission of messages equipment room. The below is described in detail concrete methods of realizing of the present invention with the fault recovery between foregoing LIC and HLR, and LIC or HLR are transmission of messages equipment, and MSC is pass-through channel equipment.
Before LIC and HLR carry out communication, model Xb interface connects, select MSC to provide initial pass-through channel for the Xb interface message between LIC and HLR by connecting the initiator, and definite candidate MSC tabulation, after breaking down for the MSC that initial pass-through channel is provided, select new MSC to provide pass-through channel for the Xb interface message between LIC and HLR. Connect if initiate the Xb interface by LIC to HLR, then LIC is for connecting the initiator; Connect if initiate the Xb interface by HLR to LIC, then HLR is for connecting the initiator. Connecting the initiator can provide according to selecting factors such as the capacity of MSC, disposal ability, load balancing the MSC of initial pass-through channel; Also can select to provide according to the principle of load balancing the MSC of initial pass-through channel. The MSC quantity that comprises in the candidate MSC tabulation can determine that according to the applied environment of reality for example, candidate MSC tabulation comprises 3 MSC, or candidate MSC tabulation comprises 6 MSC. MSC sign in the candidate MSC tabulation can be arranged according to the sequence of priority, i.e. first MSC priority in the candidate MSC tabulation is the highest, and the MSC priority that is arranged in order progressively reduces. When selecting candidate MSC, also can select according to factors such as the capacity of MSC, disposal ability, load balancing.
Secondly, LIC sets up the Xb interface with HLR and is connected, and LIC and HLR start respectively timer T1 and timer T2. When timer T1 referred to that the LIC timing arrives T1, LIC sent link detecting message to HLR, carried the current MSC sign that pass-through channel is provided for the Xb interface message in this link detecting message; Or the HLR timing is when arriving T1, and HLR sends link detecting message to LIC, carries the current MSC sign that pass-through channel is provided for the Xb interface message in this link detecting message. When timer T2 referred to that the LIC timing arrives T2, LIC determined that the current MSC of pass-through channel that provides breaks down, and tabulation selects new MSC to provide follow-up pass-through channel for the Xb interface message according to candidate MSC; Or the HLR timing is when arriving T2, and HLR determines that the current MSC of pass-through channel that provides breaks down, and tabulation selects new MSC to provide follow-up pass-through channel for the Xb interface message according to candidate MSC. Timer T2 should be more than or equal to timer T1. In addition, can according to the set of frequency timer T1 of link detecting, if need to frequently detect link, can arrange timer T1 smaller, such as 15 minutes; Detect if only link is carried out generality, can arrange timer T1 larger, such as 1 hour.
Fig. 4 is link detecting and fault recovery flow chart, and as shown in Figure 4, link detecting and failover procedure may further comprise the steps:
Before step 401～step 403:LIC initiates the connection of Xb interface to HLR, select MSC2 to provide initial pass-through channel for itself and Xb interface message that HLR transmits, then determine and storage candidate MSC tabulation, such as MSC1, MSC3, MSC5 etc., then initiating the Xb interface to HLR connects, be connected connection with candidate MSC identification list and set up and ask to be encapsulated in the transparent transmission message data of Xa interface carrying MSC2 sign, send to MSC2. After MSC2 received this transparent transmission message, the HLR sign of carrying according to this transparent transmission message was connected the connection request of setting up and is encapsulated in the transparent transmission message data of C interface carrying the MSC2 sign with candidate MSC identification list, send to the HLR that identifies corresponding to HLR.
After step 404～step 407:HLR receives transparent transmission message, data in this transparent transmission message of decoding obtain carrying MSC2 sign and are connected connection with candidate MSC identification list and set up and ask, then storage provides the MSC2 sign of initial pass-through channel, and storage candidate MSC identification list. HLR is encapsulated in connection establishment response in the transparent transmission message data of C interface, sends to MSC2. After MSC2 received this transparent transmission message, the LIC sign according to this transparent transmission message is carried was encapsulated in connection establishment response in the transparent transmission message data of Xa interface, sends to the LIC corresponding to the LIC sign. After LIC received this transparent transmission message, the data in this transparent transmission message of decoding obtained connection establishment response. HLR starts timer T1 and T2 after sending the transparent transmission message of connection establishment response to MSC2. After LIC receives the transparent transmission message of connection establishment response, start timer T1 and T2. There is not obvious time sequencing in the process that HLR and LIC start timer T1, T2.
Step 408～step 412: after a period of time, the timing of HLR arrives T1, and the link detecting message that HLR will carry the MSC2 sign is encapsulated in the transparent transmission message data of C interface, sends to MSC2. After MSC2 received this transparent transmission message, the LIC sign according to this transparent transmission message is carried was encapsulated in the link detecting message that carries the MSC2 sign in the transparent transmission message data of Xa interface, sends to the LIC corresponding to the LIC sign. After LIC receives this transparent transmission message, data in this transparent transmission message of decoding obtain carrying the link detecting message of MSC2 sign, the MSC2 sign of carrying in the MSC2 sign of judging self current selection and the link detecting message is consistent, and the continuation selection MSC2 provide pass-through channel for the Xb interface message. After HLR sent link detecting message to MSC2, timer T1 resetted. After LIC received link detecting message, timer T2 resetted. There is not obvious time sequencing in HLR the reset process of timer T2 of timer T1 and LIC that resets.
LIC compares the MSC sign of carrying in the MSC sign of self current selection and the link detecting message, if consistent, then continue to select the MSC of current selection to provide pass-through channel for the Xb interface message, if inconsistent, then select the MSC corresponding to the MSC sign of carrying in the link detecting message, for the Xb interface message provides pass-through channel.
Step 413～step 417: after a period of time, the timing of LIC arrives T1, and the link detecting message that LIC will carry the MSC2 sign is encapsulated in the transparent transmission message data of Xa interface, sends to MSC2. After MSC2 received this transparent transmission message, the HLR sign according to this transparent transmission message is carried was encapsulated in the link detecting message that carries the MSC2 sign in the transparent transmission message data of C interface, sends to the HLR corresponding to the HLR sign. After HLR receives this transparent transmission message, data in this transparent transmission message of decoding obtain carrying the link detecting message of MSC2 sign, the MSC2 sign of carrying in the MSC2 sign of judging self current selection and the link detecting message is consistent, and the continuation selection MSC2 provide pass-through channel for the Xb interface message. After LIC sent link detecting message to MSC2, timer T1 resetted. After HLR received link detecting message, timer T2 resetted. There is not obvious time sequencing in LIC the reset process of timer T2 of timer T1 and HLR that resets.
HLR compares the MSC sign of carrying in the MSC sign of self current selection and the link detecting message, if consistent, then continue to select the MSC of current selection to provide pass-through channel for the Xb interface message, if inconsistent, then selecting provides pass-through channel corresponding to the MSC of the MSC sign of carrying in the link detecting message for the Xb interface message.
Step 418～step 423: because MSC2 breaks down, can't provide pass-through channel for the Xb interface message, HLR does not receive the link detecting message that LIC sends all the time, after a period of time, the timing of HLR arrives T2, HLR selects MSC1 to provide pass-through channel for the Xb interface message according to the candidate MSC tabulation of storage, and then the HLR link detecting message that will carry the MSC1 sign is encapsulated in the transparent transmission message data of C interface, sends to MSC1. At this moment, if HLR has the Xb interface message need to send to LIC, then the Xb interface message is encapsulated in the transparent transmission message data of C interface, sends to MSC1. After MSC1 received the transparent transmission message of this link detecting message, the LIC sign according to this transparent transmission message is carried was encapsulated in the link detecting message that carries the MSC1 sign in the transparent transmission message data of Xa interface, sends to the LIC corresponding to the LIC sign. After LIC receives this transparent transmission message, data in this transparent transmission message of decoding obtain carrying the link detecting message of MSC1 sign, the MSC2 sign of carrying in the MSC2 sign of judging self current selection and the link detecting message is inconsistent, and then selecting provides pass-through channel corresponding to the MSC1 of the MSC1 sign of carrying in the link detecting message for the Xb interface message. After HLR sent link detecting message to MSC1, timer T1, T2 resetted. After LIC received link detecting message, timer T1, T2 resetted. There is not obvious time sequencing in HLR the reset process of timer T1, T2 of timer T1, T2 and LIC that resets. At this moment, if LIC has the Xb interface message need to send to HLR, then the Xb interface message is encapsulated in the transparent transmission message data of Xa interface, sends to MSC1.
Step 424～step 428: after a period of time, the timing of LIC arrives T1, and the link detecting message that LIC will carry the MSC1 sign is encapsulated in the transparent transmission message data of Xa interface, sends to MSC1. After MSC1 received this transparent transmission message, the HLR sign according to this transparent transmission message is carried was encapsulated in the link detecting message that carries the MSC2 sign in the transparent transmission message data of C interface, sends to the HLR corresponding to the HLR sign. After HLR receives this transparent transmission message, data in this transparent transmission message of decoding obtain carrying the link detecting message of MSC1 sign, the MSC1 sign of carrying in the MSC1 sign of judging self current selection and the link detecting message is consistent, and the continuation selection MSC1 provide pass-through channel for the Xb interface message. After LIC sent link detecting message to MSC1, timer T1 resetted. After HLR received link detecting message, timer T2 resetted. There is not obvious time sequencing in LIC the reset process of timer T2 of timer T1 and HLR that resets.
If LIC or HLR the new MSC that tabulation is selected according to candidate MSC can't provide pass-through channel for the Xb interface message, then tabulation selects other MSC to provide pass-through channel for the Xb interface message according to candidate MSC, if all MSC that comprise in the candidate MSC tabulation selected, then can in candidate MSC tabulation, again select from section start, or no longer select, directly produce alarm.
When the timing of LIC and HLR arrives T2 at one time, when all not receiving the link detecting message to method, apparatus, to select new MSC to provide pass-through channel for the Xb interface message according to the candidate MSC tabulation of separately storage, for guaranteeing that LIC selects identical MSC with HLR both sides, avoid LIC and the HLR selection of rattling, LIC must store identical candidate MSC tabulation with HLR.
Above-described LIC or HLR send the process of link detecting message, and be only relevant with timer T1 separately, and the timing of which equipment arrives T1, and this equipment is just to method, apparatus is sent link detecting message. If the timing of LIC arrives T1, is HLR to method, apparatus then; If the timing of HLR arrives T1, is LIC to method, apparatus then. Above-described LIC or HLR select new MSC that the process of pass-through channel is provided for the Xb interface message, also only relevant with timer T2 separately, the timing of which equipment arrives T2, this equipment just selects new MSC to provide pass-through channel for the Xb interface message according to the candidate MSC tabulation of storage, and the new MSC sign that then will select sends to method, apparatus. If the timing of LIC arrives T2, is HLR to method, apparatus then; If the timing of HLR arrives T2, is LIC to method, apparatus then.
The definition of following message only is listed as the call parameter of realizing the present invention and needing. The difference of applied environment according to the present invention, message name, parameter name can change to some extent, can increase new parameter for each message according to the practical application meeting.
Table 1 is parameter and the description thereof of C interface transparent transmission message, Xa interface transparent transmission message; Table 2 is for connecting parameter and the description thereof of carrying in the request of foundation; Parameter and the description thereof of table 3 for carrying in the connection establishment response; Parameter and the description thereof of table 4 for carrying in the link detecting message. Wherein, M is mandatory parameter, and O is optional parameters.
| Parameter | Type | Note |
| Type of message | M | |
| The destination device sign | O | For the transparent transmission message that mails to MSC, this parameter is essential option. To relevant device, this parameter is LIC sign or HLR sign to destination device sign instruct MS C with data penetration transmission |
| Data | M | The data of variable-length, the Xb interface message is encapsulated in these data. If the Xb interface message needs encrypted transmission, the Xb interface message after then will encrypting is encapsulated in these data |
Table 1
| Parameter | Type | Note |
| Type of message | M | |
| Candidate MSC row | M | Comprise a plurality of MSC signs. When current MSC breaks down, LIC |
| Table | Or HLR selects new MSC to provide pass-through channel for the Xb interface message according to this tabulation. First MSC in can this tabulation is set to the highest MSC of priority, reduces successively according to the priority that puts in order of MSC |
Table 2
| Parameter | Type | Note |
| Type of message | M |
Table 3
| Parameter | Type | Note |
| Type of message | M | |
| The MSC sign | M | This parameter identification goes out the current MSC that pass-through channel is provided for the Xb interface message |
Table 4
Process described above is LIC with after HLR sets up the Xb interface and is connected, and starts respectively fixing timer T1 and T2; In addition, after LIC and HLR set up the Xb interface and are connected, also can start respectively timer T2 and the random timer that is not more than timer T2, when LIC and HLR arrive random timer in timing, send link detecting message to the other side, then the random timer that resets, and again start random timer, the time span of each random timer that starts can be not identical.
Although only with under the transparent transmission networking mode, the fault detect between LIC and HLR and fault recovery are that example describes among the present invention, in fact, above link failure detection and restoration methods are applicable in the equipment of any transparent transmission networking mode.
In a word, the above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (12)
1, the link failure recovery method under a kind of transparent transmission networking mode, described transparent transmission networking mode is characterized in that for transmission of messages equipment passes through the other side's transmission of messages equipment by the current current pass-through channel equipment of pass-through channel that provides with message the method includes the steps of:
A, transmission of messages Equipment Inspection are to current pass-through channel device fails;
B, described transmission of messages equipment are according to pre-stored candidate's pass-through channel list of devices, select new pass-through channel equipment as the current current pass-through channel equipment that pass-through channel is provided, then notify the other side's transmission of messages equipment with the pass-through channel device identification of described selection, the other side's transmission of messages equipment is selected to provide pass-through channel corresponding to the pass-through channel equipment of described pass-through channel device identification.
2, method according to claim 1 is characterized in that, described steps A may further comprise the steps:
A1, in transmission of messages equipment, set in advance pass-through channel equipment fault timer, after transmission of messages equipment and the other side's transmission of messages equipment connect, start pass-through channel equipment fault timer;
When A2, timing arrived pass-through channel equipment fault timing, transmission of messages equipment was not received the link detecting message that the other side's transmission of messages equipment sends yet in scheduled time scope, determine current pass-through channel device fails.
3, method according to claim 2 is characterized in that, further comprises after the described step B: transmission of messages equipment and the other side's transmission of messages device reset pass-through channel equipment fault timer.
4, method according to claim 2 is characterized in that,
Described steps A 1 further comprises:
Set in advance the link detecting timer of transmission of messages equipment, after transmission of messages equipment and the other side's transmission of messages equipment connect, start the link detecting timer;
Further comprise before the described steps A 2:
When timing arrived the link detecting timing, transmission of messages equipment sent link detecting message, the link detecting that then resets timer to the other side's transmission of messages equipment;
After described the other side's transmission of messages equipment was received link detecting message, pass-through channel equipment fault timer resetted.
5, method according to claim 4 is characterized in that, further comprises after the described step B: transmission of messages equipment and the other side's transmission of messages device reset link detecting timer.
6, method according to claim 4 is characterized in that, described link detecting message carries the current current pass-through channel device identification that pass-through channel is provided.
7, method according to claim 4 is characterized in that, the timing length that described link detecting timer is set is not more than the timing length of described pass-through channel equipment fault timer.
8, method according to claim 1, it is characterized in that, pre-stored candidate's pass-through channel list of devices comprises described in the step B: when transmission of messages equipment and the other side's transmission of messages equipment connect, the transmission of messages equipment of initiating to connect selects to provide the pass-through channel equipment of initial pass-through channel, and definite candidate's pass-through channel list of devices, storage provides pass-through channel device identification and candidate's pass-through channel list of devices of initial pass-through channel.
9, method according to claim 8, it is characterized in that, described storage provides after the pass-through channel device identification and candidate's pass-through channel list of devices of initial pass-through channel, further comprise: the transmission of messages equipment of initiating to connect sends pass-through channel device identification and the candidate's pass-through channel list of devices that initial pass-through channel is provided, described pass-through channel device identification and the described candidate's pass-through channel list of devices that initial pass-through channel is provided of the other side's transmission of messages device storage to the other side's transmission of messages equipment.
10, method according to claim 8, it is characterized in that, the transmission of messages equipment that initiate to connect is according to pass-through channel place capacity or pass-through channel device processes ability or pass-through channel equipment load balance, selects to provide the candidate's pass-through channel equipment that comprises in the pass-through channel equipment of initial pass-through channel or the candidate's pass-through channel list of devices.
11, method according to claim 8, it is characterized in that, described definite candidate's pass-through channel list of devices comprises: determine candidate's pass-through channel device identification of comprising in candidate's pass-through channel list of devices and the order of each candidate's pass-through channel equipment in candidate's pass-through channel list of devices.
12, method according to claim 11, it is characterized in that, described in the step B according to pre-stored candidate's pass-through channel list of devices, select new pass-through channel equipment to comprise as the current current pass-through channel equipment of pass-through channel that provides: according to the order of the candidate's pass-through channel equipment in candidate's pass-through channel list of devices of determining, to select a new pass-through channel equipment as the current current pass-through channel equipment that pass-through channel is provided.
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| CNB200310113232XA CN100341339C (en) | 2003-11-07 | 2003-11-07 | Chain circuit fault recovering method |
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| CNB200310113232XA CN100341339C (en) | 2003-11-07 | 2003-11-07 | Chain circuit fault recovering method |
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| CN100341339C true CN100341339C (en) | 2007-10-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1203011A (en) * | 1995-10-03 | 1998-12-23 | 艾利森电话股份有限公司 | A redundancy structure in a digital switch |
| JP2000286828A (en) * | 1999-03-30 | 2000-10-13 | Fujitsu Ltd | Monitoring switching method for redundant part of transmitter and its unit |
| CN1409494A (en) * | 2001-09-27 | 2003-04-09 | 阿尔卡塔尔加拿大公司 | System and method for providing fault detection and structure switching in redandancy systemic structure communication system |
-
2003
- 2003-11-07 CN CNB200310113232XA patent/CN100341339C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203011A (en) * | 1995-10-03 | 1998-12-23 | 艾利森电话股份有限公司 | A redundancy structure in a digital switch |
| JP2000286828A (en) * | 1999-03-30 | 2000-10-13 | Fujitsu Ltd | Monitoring switching method for redundant part of transmitter and its unit |
| CN1409494A (en) * | 2001-09-27 | 2003-04-09 | 阿尔卡塔尔加拿大公司 | System and method for providing fault detection and structure switching in redandancy systemic structure communication system |
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