JP2908323B2 - Method and apparatus for selecting level 3 processor of upper-level user processor in multiprocessor system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for selecting an MTP level 3 processor of an upper-level user processor in a multiprocessor system of the NO7 signaling system.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram showing an example of a conventional MTP level 3 processor selecting device disclosed in Japanese Patent Application Laid-Open No. 5-37596.

[0003] As shown in FIG. 5, MTP level 3 of the MTP upper-level user processor in the conventional NO7 signal system is used.
When the # 0 upper-level user processor 1 or the # 1 upper-level user processor 2 sends the NO7 signal, the processor selection method refers to the SLS-compatible level 3 processor table 5 or 6 to determine the # 7 corresponding to the SLS of each NO7 signal. 0NO7 MTP processor 8 or # 1
The NO7 MTP processor 9 is selected, and the NO7 signal is sent to the selected processor. In such a conventional MTP upper-level user processor, the SLS of the NO7 MTP level 3 management processor 12 is used.
The corresponding level 3 processor table 14 is updated and notified to the # 0 upper user processor 1 and the # 1 upper user processor 2 only when a signal link state change occurs, and the # 0 upper user processor 1 and the # 1 upper user The processor 2 updates its own SLS correspondence level 3 processor table 5 or 6 by the notification. For this reason, when a routing change that does not accompany a signal link state change due to a forced bypass or a control bypass occurs, the SLS of the NO7MTP level 3 management processor 12
The corresponding level 3 processor table 14 and the SLS corresponding level 3 processor table 5 of the # 0 upper user processor 1 and the SLS of the # 1 upper user processor 2
The LS level 3 processor table 6 remains unchanged.

[0004]

As described above, in the conventional MTP level 3 processor selection method of the MTP upper-level user processor, when a routing change that does not accompany a signal link state change due to a forced detour or a control detour occurs. , NO7MTP level 3 management processor and the SLS-compatible level 3 processor table of the upper-level user processor remain unupdated, so that they can be used as signal links due to forced detour or control detour, etc. In the case where it is not possible to use (3), the upper-level user processor determines the MTP level 3 processor to which the signal is to be transmitted only based on the state of the signal link. For this reason, N
There is a problem that a transition between routes occurs in the MTP level 3 processor that has received the O7 signal, and this may be a transition between the MTP level 3 processors.

[0005] An object of the present invention is to provide a conventional MT as described above.
It eliminates the disadvantage of the MTP level 3 processor selection scheme of the P upper-level user processor, and allows the upper-level user processor to always select the level 3 processor containing the signal link to which the NO7 signal is to be transmitted.
An object of the present invention is to provide a method and an apparatus for selecting an MTP level 3 processor of an upper-level user processor that can eliminate a transition between TP level 3 processors.

[0006]

SUMMARY OF THE INVENTION Level 3 of the upper user processor in the multiprocessor type system of the present invention
The processor selection method is a level 3 processor selection method of an upper-level user processor in a multiprocessor type system in which a plurality of upper-level user processors of the NO7 signaling system and a plurality of level 3 processors of the NO7-level signaling system are present. When a change in the routing state occurs due to disconnection or restoration of a signal link connecting any of the plurality of ground stations to and from the plurality of ground stations, and a plurality of the plurality of signal links configured by any of the plurality of signal links When a change in the routing state due to blockage or forced detour or control detour of the signaling link group occurs, which signaling link group of the signaling link groups is used for each of the ground stations of the plurality of ground stations. Signal link group table S per le and the signal link group
The contents of the SLS correspondence level 3 processor table indicating the level 3 processor connecting the signal link corresponding to the LS are notified from the MTP level 3 management processor to the upper level user processor, and the signal for each ground in the upper level user processor. Link group table and SL
The S corresponding level 3 processor table is updated, and when the upper user processor transmits the NO7 signal, the upper level user processor refers to its own signal link group table for ground and the SLS corresponding level 3 processor table to select the level 3 processor to be transmitted. That is to say.

In the multiprocessor system according to the present invention, an apparatus for selecting a level 3 processor of an upper level user processor comprises a plurality of NO7s having an upper level user, a first SLS level 3 processor table and a first signal link group table for each ground. An upper-level user processor of a signaling system, and an MTP level 3 of an NO7 signaling system connected to the plurality of upper-level user processors via a bus.
An MTP level 3 management processor having a management unit, a second SLS-compatible level 3 processor table and a second signal link group table for each ground, and M connected to the plurality of upper-level user processors via the bus;
A plurality of level 3 processors having a TP level 3 control unit, wherein some of the plurality of level 3 processors are connected to a plurality of ground stations via a plurality of relay stations or directly. And a set of signal links between a plurality of level-3 processors connected to the plurality of ground stations is defined as a signal link group, and a signal link group and a detour route serving as a main route for the plurality of ground stations are connected. When a change in the use state of the signaling link group due to disconnection or restoration of the signaling link occurs, and when the signaling link group is blocked or forcedly detoured or detoured by the control detour, the signaling link group is set. When a change in the use state occurs, it is detected by the MTP level 3 control unit of the Bell 3 processor. Updating the second SLS corresponding level 3 processor table or the second ground-based signal link group table of the MTP level 3 management processor, and updating the updated second SLS corresponding level 3 processor table or the second Sending the contents of the ground-based signal link group table to the plurality of upper-level user processors and updating the first SLS corresponding level 3 processor table or the first ground-based signal link group table; Processor is NO
7 signal, the first SLS corresponding level 3
The method includes selecting a level-3 processor to be transmitted with reference to a processor table or the first signal link group table for each ground.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an MTP level 3 processor selecting apparatus according to the present invention, FIG. 2 is a correspondence diagram showing a configuration of a signal network in the embodiment of FIG. 1, and FIG. 3 is an embodiment of FIG. And FIG. 4 is a flowchart showing the operation of the MTP level 3 management unit in the embodiment of FIG.

In FIG. 1, a # 0 high-order user processor 21 and a # 1 high-order user processor 22 respectively include a high-order user 23 or 24, an SLS-compatible level 3 processor table 25 or 26, and a ground-specific signal link group table 35 or 36. N connected to the # 0 upper-level user processor 21 and the # 1 upper-level user processor 22 by a bus 27
The O7 MTP level 3 management processor 32 has an MTP level 3 management unit 33, an SLS corresponding level 3 processor table 34, and a signal link group table 37 for each ground. # 0 to # 3 level 3 processors 28 to 31 connected to the # 0 upper user processor 21 and the # 1 upper user processor 22 by a bus 27.
Have MTP level 3 control units 38 to 41, respectively.

# 0 to # 1 Level 3 processors 28 to 29
Is connected to the STP-A station 48 by the signaling link group 46.
# 2 to # 3 level 3 processor 30
31 to STP-B by the signal link group 47
Station 49 is connected. The signal link group 46 includes
A signal link 42 connecting the # 0 level 3 processor 28 and the STP-A station 48, and a # 1 level 3 processor 29
And a signal link 43 for connecting the STP-A station 48. The signal link group 47 includes a signal link 44 for connecting the # 2 level 3 processor 30 and the STP-B station 49, and a # 3 level. 3 processor 31 and STP-
And a signal link 45 for connecting to the B station 49.

The STP-A station 48, which is a relay station, is connected to a ground “C” 50, which is a ground station, by a signal link 53, and to a ground “D” 51, by a signal link 54.
The STP-B station 49 connects the signal “C” 50 with the signal link 56 and the signal “D” 51 with the signal link 55.
Is connected to

Next, the operation of the MTP level 3 processor selection device configured as described above will be described with reference to FIGS.
This will be described with reference to FIG.

When the system is restarted, the MTP level 3 management unit 33 of the NO7 MTP level 3 management processor 32
# 3 The level 3 processors 28 to 31 are notified of the establishment data of the station data and the signal link, so that the signal link group table 37 for each ground and the SLS level 3 processor table 34 are created. At this time, as shown in FIG.
7, the signal link group 46 is set as the backbone signal link group (backbone route) 57 for the ground “C” 50, and the backbone signal link group (backbone route) 57 is set for the ground “D” 51. A link group 47 is set. Therefore, the signal link group 47 is set for the detour signal link group (detour route) 58 for the ground “C” 50, and the signal link group 46 is set for the detour signal link group 58 for the ground “D” 51. Similarly, the SLS correspondence level 3 processor table 34 includes # 0 to # 0 corresponding to the signal link group 46.
The # 1 level 3 processors 28 to 29 are set, and the # 2 to # 3 level 3 processors 30 to 31 are set corresponding to the signal link group 47. These tables are transferred to the # 0 upper-level user processors 21 and # via the bus 27.
The first upper-level user processor 22 and the # 1 upper-level user processor 22 are notified.
Updates its own ground-based signal link group table 35 or 36 and the SLS-compatible level 3 processor table 25 or 26.

# 0 Upper user processor 21 or # 1
The upper-level user processor 22 determines whether each upper-level user 23
Or, when the NO7 signal is transmitted from 24, the signal link group number is searched by the respective signal link group table 35 or 36 for each ground, and the SLS corresponding level 3 processor table 25 or 26 is searched by the signal link group number. By doing, N
Determine the level 3 processors 28-31 to which the O7 signal should be sent.

In the state of FIG. 1, signaling link group 4
6 is disconnected (steps 61 and 62 in FIG. 4), the # 0 level 3 processor 28
The TP level 3 control unit 38 detects this and outputs NO7MTP
The level 3 management processor 32 is notified. Upon receiving this notification, the NO7 MTP level 3 management processor 32
The P level 3 management unit 33 recognizes this, and updates the SLS level 3 processor table 34 corresponding to the signal link group 46 to which the disconnected signal link 42 belongs. Disconnection of signaling link 42 is signaling link group 4
If it is not the last available signaling link in 6, the routing state has not changed and the updated SL
Only the S corresponding level 3 processor table 34 is notified to the # 0 upper user processor 21 and the # 1 upper user processor 22. The # 0 upper-level user processor 21 and the # 1 upper-level user processor 22 receiving this notification update their respective SLS-compatible level 3 processor tables 25 or 26 (step 64), and update the updated SL.
In accordance with the S corresponding level 3 processor table 25 or 26, # 0 to # 3 level 3 processors 28 to 31 are selected.

Thereafter, when the signal link 43 of the signal link group 46 is disconnected, NO is set as in the case described above.
7 MTP level 3 MTP level 3 of the management processor 32
The management unit 33 recognizes this, and the signal link 43
Is updated in the SLS correspondence level 3 processor table 34 corresponding to the signal link group 46 to which. In this case, since there is no usable signal link in the signal link group 46, the routing of the bypass route 58 to the signal link group 47 is changed at the ground "C" 50 (step 65). Therefore, the ground-based signal link group table 37 is updated, and only the updated ground-based signal link group table 37 is updated with the # 0 upper-level user processor 21 and the # 1 upper-level user processor 2.
Notify 2. The # 0 upper-level user processor 21 and the # 1 upper-level user processor 22 that have received the notification transmit the signal link group table 35 or 3 for each ground.
6 (step 66), and # 0 to # 3 level 3 processors according to the updated signal link group table 35 or 36 for ground and the SLS corresponding level 3 processor table 25 or 26 corresponding to the new signal link group 47. Select 28-31.

Next, an operation in the case where a signal link group is closed due to maintenance personnel intervention, or a routing change which does not involve a signal link state change due to a forced detour or a control detour due to reception of a TFP signal or a TFA signal occurs. explain.

When the signal link 55 between the STP-B station 49 and the ground "D" 51 is disconnected, the STP-B station 49
A TFP signal indicating that communication with the ground "D" 51 has become impossible is transmitted to # 2 to # 3 level 3 processors 30 to 3
1 (step 63). # 2 to # 3 level 3 processor 3 receiving this TFP signal
0 to 31 notify the NO7MTP level 3 management processor 32 of this fact.
Recognize it in 3. As a result, the ground “D” 5
It is detected that there has been a change in the routing state from the signaling link group 47 that is the backbone route 57 to the signaling link group 46 that is the detour rate 58 (step 6).
5) Update the per-ground signal link group table 37 and notify only the updated per-ground signal link group table 37 to the # 0 upper user processor 21 and the # 1 upper user processor 22. The # 0 upper-level user processor 21 and the # 1 upper-level user processor 22 that have received the notification update their respective ground-based signal link group tables 35 or 36 (step 66), and update the updated ground-based signal link group table 35 or 36. 36
And # 3 to # 3 level 3 processors 28 to 31 are selected according to the SLS level 3 processor table 25 or 26 corresponding to the new signaling link group 46.

If the signal link group 46 of the backbone route 57 to the ground "C" 50 by the command is closed by the maintenance person's intervention, the request by this command is sent to the MTP level 3 management unit 33 of the NO7 MTP level 3 management processor 32. (Step 63), thereby detecting that the routing state has changed from the signal link group 46, which is the main route 57 to the ground "C" 50, to the signal link group 47, which is the detour rate 58 (step 65). ), Update the per-ground signal link group table 37 (step 66), and notify only the updated per-ground signal link group table 37 to the # 0 upper-level user processor 21 and the # 1 upper-level user processor 22 (steps 67 and 68). ). The # 0 upper-level user processor 21 and the # 1 upper-level user processor 22 that have received the notification update their respective ground-based signal link group tables 35 or 36, and update the updated ground-based signal link group table 35 or 36 with a new one. SLS level 3 corresponding to the simple signal link group 47
# 0 to # 3 according to the processor table 25 or 26
Select level 3 processors 28-31.

Signal link group table 35 for each ground
As shown in FIG. 3, since two signal link group numbers 71 can be designated for one of the ground (DPC) 70 as shown in FIG. In the case of, each trunk signal link group number can be set in the data corresponding to the ground, and which trunk signal link group is selected can be determined by the SLS of the signal.

Although the embodiment of FIG. 1 is an example in which there are four level 3 processors and two ground stations, the present invention is directed to an arbitrary system having two or more level 3 processors and two ground stations. The present invention is applicable to the case of the number, and in that case, the configuration of the signal link group and the selection of the backbone signal link group and the bypass signal link group are also free. In the embodiment of FIG. 1, the relay station is connected to the ground station by relaying the STP station. However, the relay station may be directly connected to the ground station without relaying the STP station.

[0023]

As described above, according to the present invention, the signal link group table for each ground and the SLS level 3 processor table are provided in the upper processor, and the NO7MT
The MTP level 3 management unit of the P upper-level user processor recognizes the state of the signal link and the signal link group, sends the state to the upper-level processor, and stores it in the signal link group table for each ground and the SLS-compatible level 3 processor table. Can select the level 3 processor connecting the signal link to which the NO7 signal is to be transmitted by referring to the ground-specific signal link group table and the SLS corresponding level 3 processor table, so that the upper level processor can , Regardless of the state of the signal link and the signal link group, not only when there is a routing change due to a change in the state of the signal link, but also in a routing change that does not involve a change in the state of the signal link due to forced detour or control detour, etc. was there Even if there is an effect that it is possible to transmit the NO7 signal for an MTP level 3 processor in question without a crossover between MTP level 3 processor.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of an MTP level 3 processor selection device of the present invention.

FIG. 2 is a correspondence diagram illustrating a configuration of a signal network in the embodiment of FIG. 1;

FIG. 3 is a format diagram showing a signal link group table for each ground in the embodiment of FIG. 1;

FIG. 4 is a flowchart showing an operation of an MTP level 3 management unit in the embodiment of FIG.

FIG. 5 is a block diagram showing an example of a conventional MTP level 3 processor selection device.

[Explanation of symbols]

1.21 # 0 upper-level user processor 2.22 # 1 upper-level user processor 5.6.25.26 SLS-compatible level 3 processor table 8 # 0NO7MTP processing processor 9 # 1NO7MTP processing processor 12.32 NO7MTP level 3 management processor 14.34 SLS correspondence level 3 processor table 23/24 upper user 27 bus 28 # 0 level 3 processor 29 # 1 level 3 processor 30 # 2 level 3 processor 31 # 3 level 3 processor 32 NO7 MTP level 3 management processor 33 MTP level 3 management unit 35・ 36 ・ 37 Signal link group table for each ground 38 ・ 39 ・ 40 ・ 41 MTP level 3 control unit 42 ・ 43 ・ 44 ・ 45 ・ 53 ・ 54 ・ 55 ・ 56
Signaling link 46/47 Signaling link group 48 STP-A station 49 STP-B station 50 Ground "C" 51 Ground "D" 57 Backbone route 58 Detour rate 61-68 Step 70 Ground (DPC) 71 Signal link group number

Continuation of the front page (56) References JP-A-5-37596 (JP, A) 1989 IEICE Autumn National Convention Lecture Papers 1989 p3.17 Hiroyuki Ichikawa, Toshikazu Suzuki Discussion "Electronic Communication Vol. No. 56 2/3 p264-273 1981 B.I. Ross i & F. Haerens "ITT1240 Digital Exchange Implementation of C CITT No. 7 Common Channel Signaling" (58) Fields investigated (Int. Cl. ⁶ , DB name) G06F 15/177 676 H04L 29/10 JICST file (JOST)

Claims (2)

(57) [Claims] 1. A method for selecting a level 3 processor of an upper-level user processor in a multiprocessor system in which a plurality of upper-level user processors of a NO7 signaling type and a plurality of level 3 processors of a NO7-level signaling type are present, respectively. When a change in the routing state occurs due to disconnection or restoration of a signal link connecting any of the plurality of ground stations to and from the plurality of ground stations, and a plurality of the plurality of signal links configured by any of the plurality of signal links When a change in the routing state due to blockage or forced detour or control detour of the signaling link group occurs, which signaling link group of the signaling link groups is used for each of the ground stations of the plurality of ground stations. And a signal link group table for each ground indicating The MTP level 3 management processor notifies the upper level user processor of the contents of the SLS corresponding level 3 processor table indicating the level 3 processor that connects the signal link corresponding to the SLS for each signal link group, and And updates the signal link group table and the SLS correspondence level 3 processor table according to the ground, and when the upper-level user processor transmits the NO7 signal, its own signal link group table and the SLS correspondence level 3
A method of selecting a level 3 processor of an upper-level user processor in a multiprocessor type system, comprising selecting a level 3 processor to be transmitted with reference to a processor table. 2. A plurality of upper user processors of the NO7 signaling system having an upper user and a first SLS corresponding level 3 processor table and a first signal link group table for each ground, and the plurality of upper user processors and a bus Connected via a NO7 signaling MTP
An MTP level-3 management processor having a level-3 management unit, a second SLS-compatible level-3 processor table and a second ground-based signal link group table; and an MTP connected to the plurality of upper-level user processors via the bus. Multiple Level 3 units with Level 3 control unit
A plurality of level 3 processors connected to a plurality of ground stations via a plurality of relay stations or directly to the plurality of level 3 processors, and the plurality of ground stations are connected to each other. A set of signaling links between the plurality of level 3 processors is defined as a signaling link group, and a signaling link group serving as a main route and a signaling link group serving as a detour route are set for the plurality of ground stations. When the usage state of the signaling link group is changed due to disconnection or restoration, and when the usage state of the signaling link group is changed due to blockage or forced detour or control detour of the signaling link group, the level 3 The MTP level 3 control unit of the processor detects it and detects it before the MTP level 3 management processor. Updating a second SLS-compatible level 3 processor table or the second signal-by-ground signal link group table and updating the contents of the updated second SLS-compatible level 3 processor table or the second signal-by-ground signal link group table When the plurality of upper-level user processors send the NO7 signal by updating the first SLS-compatible level 3 processor table or the first signal-by-ground signal link group table by sending to the plurality of upper-level user processors, Upper level user processor in a multiprocessor type system, comprising selecting a level 3 processor to be transmitted with reference to the first SLS corresponding level 3 processor table or the first signal link group table for each ground. Level 3 processor selection device