JPH0779284A - Congestion information transmission system and traffic information transmission system - Google Patents

Abstract

PURPOSE:To enable the line operation corresponding to the use status of a momentarily changing line by making adjacent stations or the station of an incoming destination perform the processing of congestion information and traffic information. CONSTITUTION:When the fact that either one of exchange means 131 to 13N are in congestion states is recognized by the processes of the reception and the call processing from other stations, congestion information is transmitted from a pertinent exchange means. In a transmission destination selection means 17, by recognizing the transmission origin exchange means of the information and referring to a storage means 15 based on this, the selection of a transmission line to be the output route of a call is enabled. In a transmission means 19, the congestion information and the discrimination information on the station where the exchange means of the transmission origin are arranged are arranged on the overhead of a prescribed frame based on the frame format of a new synchronizing interface and the frame is made to be transmitted to adjacent stations via the transmission line selected by the means 17. Thus, the congestion information is discriminated and recognized each call and the control which is adaptive to this result is quickened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a congestion information transmission method for transmitting congestion information indicating congestion states between terminal stations in a transmission system to which a new synchronous interface is applied, and a traffic amount and traffic density of each call. The present invention relates to a traffic information transmission method for transmitting traffic information that serves as a calculation reference.

[0002]

2. Description of the Related Art In recent years, a user network interface (UN) has been developed in order to integrate existing major digital hierarchies to provide a broadband ISDN service.
I) has been studied, and Synchronous Digit (SDH: Synchronous Digit) that can flexibly synchronize and multiplex various high-speed data signals and signals transmitted and received by existing communication services.
al Hierarchy) has become an international standard.

In Japan, the existing network, which is adapted to such an international standard and is synchronized up to 6.3 Mb / s, is synchronized to a single speed of 156 Mb / s, and the direct line termination is performed at the multiplexing level. A new synchronous interface for efficiently processing cross-connects and other processes was examined and decided by the Telegraph and Telephone Technical Committee as a national standard.

FIG. 5 is a diagram showing a configuration example of a transmission system to which the new synchronous interface is applied. In the figure, the terminal station 51 _A , the relay station 52, and the terminal station 51 _c are connected in series via transmission lines 53 ₁ and 53 ₂ adapted to the new synchronous interface. Further, the terminal station 51 _A , the relay station 52 and the terminal station 51 _c are respectively connected to the data lines 54 _A , 54 _B ,
Connected to the line / path management center 55 via 54 _C ,
It is also connected to the network control center 57 via the data lines 56 _A , 56 _B and 56 _C.

Terminal station 51_AThen, the exchange 58_A1~ 58_ANBut
And the outgoing routes of these exchanges are
59_A1~ 59_ANVia transmission line 53₁Connected to. It
In addition, the transmission device 59_A1~ 59_ANIs a communication link for control
60_AAnd operation information collection and distribution device (MCM (hereinafter, simply
It is called "collection and distribution device". )) 61_AVia transmission line 5
Four _A, 56_AConnected to. The terminal 51_CIn the configuration of
Regarding the above-mentioned exchange 58_A1~ 58_ANEquivalent to
Exchange 58_C1~ 58_CNTransmission path 53₂Is connected
And the transmission device 59 described above._A1~ 59_ANEquivalent to
Sending device 59_C1~ 59_CNThe way out of is not defined
Except terminal station 51_ASince it is the same as the configuration of
Add the first subscript to the component_CSame reference as
A number is given and shown, and the description thereof is omitted here.

At the relay station 52, transmission devices 62 _{B1 to} 62 _{BN are provided.}
Are arranged opposite to the terminal station 51 _A via a transmission line 53 ₁ , and these transmission devices are respectively exchanges 58 _{B1 to} 58 _BN.
Is connected to the entrance route. The outgoing routes of the exchanges 58 _{B1 to} 58 _BN are transmitted via the transmission devices 63 _{B1 to} 63 _BN , respectively, to the transmission line 53.
Connected to ₂ . The transmission devices 62 _{B1 to} 62 _BN and the transmission devices 63 _{B1 to} 63 _BN are each a communication link 6 for control.
0 _B1, 60 _B2 is connected to the current distribution device 61 _B via the further the current distribution device 61 _B is connected to the transmission line 54 _B, 56 _B.

In the transmission system having such a configuration, for example, when an outgoing call originates in a terminal accommodated in the exchange 58 _A1 , the exchange processes the outgoing call based on a predetermined processing procedure and To an adjacent relay station (here, for the sake of simplicity, it is assumed to be the relay station 52) which can be connected to the terminal station (here, for simplicity, the terminal station 51 _C ) which accommodates the terminal by the shortest route, Transfer the applicable call. Further, the exchange 58 _B1 of the relay station 52 relays the call thus transferred to the terminal station 51 _C. At the terminal station 51 _C , the exchange (herein, the exchange 58 _C1 for simplicity) accommodating the above-mentioned destination terminal takes in the call thus relayed via the transmission device 59 _C1 and receives the incoming call. Perform processing.

The terminal station 51_A, 51_CAnd relay station 52
Then, the exchange 58_A1~ 58_AN, 58 _B1~ 58_BN, 58_C1
~ 58_CNIs a pre-defined call treatment for each call
Monitor the presence of congestion based on the procedure and show the result of the monitoring.
Congestion information (congestion mode, switching equipment in charge of processing,
It consists of attached lines and other identification information. ) Is generated
It Collection / delivery device 61_A~ 61_CAre transmission devices 5 respectively
9_A1~ 59_AN, 62_B1~ 62_BN(63_B1~ 63_BN), 5
9_C1~ 59_CNAnd communication link 60_A~ 60_CThrough
Capture, transmission path 56_A~ 56_CSuch radiation through
The congestion information is sent to the network control center 57.

The network control center 57 receives the congestion information thus individually transmitted from the terminal stations 51 _A and 51 _C and the relay station 52, and the contents of the information are transmitted to the operator via a predetermined terminal device. To notify. The operator makes a call for reducing or avoiding the congestion state indicated by each congestion information by making a comprehensive judgment based on the network configuration of the transmission system for all the congestion information notified in this way. An exchange to which congestion control such as regulation and output route switching is to be performed is determined, and a congestion control command is issued to the exchange via the same transmission path as the congestion information described above.

Further, at the terminal stations 51 _A and 51 _C and the relay station 52, the exchanges 58 _{A1 to} 58 _AN , 58 _{B1 to} 58 _BN , 5
8 _{C1 to} 58 _CN are calling subscriber number, called subscriber number, line speed service identification information, major user identification information, user information, occurrence time, end time (duration), and call state based on the above-mentioned call processing procedure. , Cause of call loss,
It collects traffic information including identification information of the exchanges in charge of processing, route information, and so on. Collection and distribution device 61 _A
˜61 _C are transmission devices 59 _{A1 to} 59 _AN , 62 _{B1 to} 62 _BN
(63 _{B1 to} 63 _BN ), 59 _{C1 to} 59 _CN and communication links 60 _{A to} 60 _C , such traffic information is taken in and sent to the line / path management center 55 via transmission lines 54 _{A to} 54 _C. To do.

The line / path management center 55 receives the traffic information thus individually transmitted from the terminal stations 51 _A and 51 _C and the relay station 52, and the content of the information is transmitted via a predetermined terminal device. Notify the operator. Such traffic information is provided for the operator to grasp the traffic distribution and the like for each section connecting adjacent terminal stations and each section connecting the adjacent terminal station and the relay station.

[0012]

By the way, in such a conventional transmission system, all the congestion information is once gathered in the network control center 57, but the operator performs various operations on the above-mentioned terminal to transmit these congestion information. By analyzing the congestion information of the above, the exchange that should perform the congestion control in accordance with the actual congestion state was specified. Therefore, it takes a long time from the time when the congestion state occurs to the time when the congestion control corresponding to the congestion state is performed, and there is a case where the rapid congestion control cannot be performed and the service quality deteriorates.

Further, the line / path management center 55 collects traffic information individually collected by the exchanges arranged in all the terminal stations and relay stations regardless of the difference in call. Information that identifies the call is not included. Therefore, no matter what kind of processing is performed on such traffic information, it is possible to grasp the combination of actually allocated lines (connection route) for relay calls that pass through multiple relay stations (switches). There wasn't.

The present invention provides a congestion information transmission method capable of promptly controlling congestion for the generated congestion state and a traffic information transmission method capable of surely grasping a connection route for each call. To aim.

[0015]

FIG. 1 is a block diagram showing the principle of the invention described in claims 1 and 2. The invention according to claim 1 is a transmission line 11 ₁ adapted to a new synchronous interface.
~ 11 _N are individually connected to perform call processing for calls that use these transmission paths as either incoming or outgoing routes, and monitor the presence or absence of a congestion state based on the procedure of the call processing to check the individual congestion. The exchanging means 13 _{1 to} 13 _N for transmitting the congestion information indicating the mode and the generation point of the state, and the transmission paths 11 _{1 to} 11 _N and the exchanging means 13 _{1 to} 13 are individually associated with the ingress route and the egress route. _N
A storage unit 15 that holds the connection relationship with the station information as station information.
And the congestion information sent from the exchanging means 13 _{1 to} 13 _N , the station information is referred to based on the exchanging means of the sender, and the call outgoing route in which the congestion state corresponding to the congestion information is detected. Destination selection means 17 for selecting the transmission path
A frame is generated by arranging the congestion information sent from the sender's exchanging means and the identification information of the station in which the exchanging means is arranged in the overhead based on the frame format of the new synchronization interface, and the frame is sent to the destination selecting means. Transmitting means 19 for transmitting to the transmission path selected by 17
It is characterized by having and.

The invention according to claim 2 is a call of a call which is individually connected to the transmission lines 11 _{1 to} 11 _N adapted to the new synchronous interface and uses these transmission lines as either an incoming route or an outgoing route. Switching means 21 _{1 to} 21 _N that perform processing and send out traffic information indicating the traffic amount or traffic density for each type of call, and the transmission paths 11 ₁ to individually corresponding to the ingress and egress routes. 11 _N and exchange means 2
The storage means 15 for holding the connection relation with 1 _{1 to} 21 _N as station information, and the traffic information sent from the exchanging means 21 _{1 to} 21 _N are fetched and the station information is referred to based on the exchanging means of the transmission source. Then, the destination selection means 23 for selecting the transmission path which is the outgoing path of the call indicated by the traffic information, the traffic information sent from the exchange means of the transmission source, and the identification of the station in which the exchange means is arranged. And a transmission means 25 for generating a frame in which information and information are arranged in the overhead based on the frame format of the new synchronous interface and transmitting the frame to the transmission path selected by the transmission destination selection means 23.

[0017]

In the congestion information transmission method according to the invention described in claim 1, in the process of call processing, a notification that any _one of the exchanging means 13 _{1 to} 13 _N has detected a congestion state is received from another station or congestion occurs during the call processing. Upon recognizing the state, the corresponding exchanging means sends out congestion information indicating the congestion state. Destination selection means 17
Takes in such congestion information, recognizes the exchange means of the transmission source of the information, and further refers to the storage means 15 based on the transmission source to output the call in which the corresponding congestion state is detected. Select the transmission path that will be the path. The transmission means 19 arranges such congestion information and the identification information of the station in which the above-mentioned transmission source exchange means is arranged in the overhead of a predetermined frame based on the frame format of the new synchronization interface, and transmits the frame. Destination selection means 1
It transmits to the adjacent station via the transmission path selected by 7.

That is, in the adjacent station and the destination station, together with the identification information of the station in which the above-mentioned exchange means which has detected the congestion state and exchange means which relays the congestion information indicating the congestion state are arranged, The congestion information is surely transmitted.
Therefore, in the station arranged on the transfer route of each call, the congestion information for each call is different from the conventional example in which each station individually sends the congestion information that does not include the call identification information to the network control center. It is possible to identify and be surely grasped, and it is possible to promptly perform the congestion control adapted to the result of the grasp.

In the traffic information transmission system according to the second aspect of the present invention, the switching means 21 _{1 to} 21 _N individually perform the call processing in parallel, and when the corresponding call originates in the own station, Traffic information indicating the traffic volume and traffic density corresponding to the type is transmitted, and when the corresponding call is a transfer call from an adjacent station, the traffic information transmitted from the adjacent station is received and transmitted. The destination selection means 23 takes in such traffic information, recognizes the exchange means of the transmission source of the information, and further,
By referring to the storage means 15 on the basis of the transmission source, the transmission path which is the outgoing path of the call to which the corresponding traffic information is given is selected. The transmission means 25 arranges such traffic information and the identification information of the station in which the above-mentioned transmission source exchange means is arranged in the overhead of a predetermined frame based on the frame format of the new synchronization interface, and transmits the frame. The data is transmitted to the adjacent station via the transmission path selected by the preselection means 23.

That is, since the traffic information is surely transmitted to the adjacent station and the destination station together with the identification information of the station in which the above-mentioned exchange means for transmitting the traffic information is arranged, In the stations arranged on the call transfer route, compared to the conventional example in which these stations individually send traffic information that does not include call identification information to the line / path management center, the call is sent more quickly and reliably. It is possible to grasp the traffic amount and traffic density for each type and route, and it is possible to operate the line efficiently according to the grasped result.

[0021]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 2 is a diagram showing an embodiment corresponding to the invention described in claim 1.

The difference between this embodiment and the conventional example shown in FIG. 5 is that instead of the terminal stations 51 _A and 51 _C and the relay station 52, the terminal stations 21 _A and 21 _C and the relay station 22 having different configurations are used.
Is equipped with.

The difference between the terminal station 22 _A and the conventional terminal station 51 _A is that the collecting and delivering apparatus 61 _A is an adapter apparatus (ADP) 23 _A.
And transmission devices 59 _{A1 to} 59 via the communication link 24 _A1
Which is connected to the _AN, the adapter device 23 _A and the communication via the link 24 _A2 is connected to the exchange 58 _A1 to 58 _AN, and the transmission line 54 _A is not directly connected to the collector distribution apparatus 61 _A database (DB) 25 _A Via adapter device 23 _A
Is connected to the point. Since the configuration of the terminal station 22 _C is the same as that of the terminal station 22 _A , the same reference numeral with “ _C ” as the first subscript is given to each corresponding constituent element, The description is omitted here.

The difference between the relay station 22 and the conventional relay station 52 is that the concentrator / distributor 61 _B is the adapter device (ADP) 23 _B.
And the transmission devices 62 _{B1 to} 62 _BN , the exchanges 58 _{B1 to} 58 _BN and the transmission devices 63 _{B1 to} 63 _BN , respectively, via the communication links 24 _{B1 to} 24 _B3 , and the transmission devices 62 _{B1 to} 6 _BN.
2 _BN , exchanges 58 _{B1 to} 58 _BN and transmission devices 63 _{B1 to} 6
3 _BN and adapter device (ADP) 23 is a communication link 60 _B1, 60 _B2 communications link in place of 24 _B1 ~ respectively between _B
24 _B3 , and the transmission line 54 _B is not directly connected to the collection / delivery device 61 _B but is connected to the adapter device 23 _B via a database (DB) 25 _B.

The present embodiment and the block diagram shown in FIG.
For the correspondence relationship of ₁, 53₂Is the transmission line
11₁~ 11_NCorresponding to, the exchange 58 and the transmission device 5
9 is an exchange means 13₁~ 13_NCorresponding to, database 2
Reference numeral 5 corresponds to the storage means 15, and the adapter device 23 and the transmission device 5 are provided.
The sending device 59 corresponds to the sending destination selecting means 17, and is the sending device 5.
9 corresponds to the transmitting means 19.

The operation of this embodiment will be described below. Terminal 2
In 1 _A , the exchanges 58 _{A1 to} 5 A5 based on the configuration of the terminal station 21 _A.
The connection relationship between the 8 _AN and the transmission devices 59 _{A1 to} 59 _AN is recorded in the database 25 _A in advance as station information.

Any of the exchanges 58 _{A1 to} 58 _AN (here, "exchange 58 _A1 " for simplicity).
When the switch detects congestion based on the call processing procedure, the exchange sends the congestion information a indicating such congestion to the adapter device 23 _A via the communication link 24 _A2 . here,
The congestion information includes the identification information of the exchange (here, for simplification, the same as the subscript added to the reference number of the exchange 58 _A1 is "A1") and the identification number of the line in which the corresponding congestion has occurred ( Here, for the sake of simplicity, "2" is set.
Information indicating the mode of congestion (here, "route congestion" for simplicity) is included.

The adapter device 23 _A takes in such congestion information a, temporarily holds it, and stores it in the database 25 _A.
Access to the station information is searched based on the identification information of the exchange and the identification number of the line included in the congestion information, and the transmission device corresponding to the exchange and the line (here, the transmission device 59 _A1 Identification information (“A1”)
And ) Get. Further, based on the frame format of the new synchronous interface shown in FIG. 3, the adapter device 23 _A has the above-mentioned identification information “A1” of the exchange 58 _A1 (or the terminal station where the exchange is arranged) in the overhead of a predetermined frame. A process of adding the identification information “A”) and the congestion information a is performed via the transmission device 59 _A1 . Therefore, the frame whose overhead is rewritten in this way is sent to the relay station 22 via the transmission path 53 ₁ .

The relay station 22 corresponds to each combination of the exchanges 58 _{A1 to} 58 _AN arranged in the terminal station 21 _A and the lines accommodated in these exchanges, and the exchanges and the lines to be connected in the own station. The identification information and the identification information of the transmission devices 63 _{B1 to} 63 _BN connected in the local station corresponding to each combination of the exchanges 58 _{B1 to} 58 _BN and the lines corresponding to these outgoing routes are stored in the database 25 _B. Is registered in advance as station information.

The transmission device 62 _B1 extracts the contents of the overhead of each frame received via the transmission line 53 ₁ ,
It is sent to the adapter device 23 _B via the communication link 24 _B1 . The adapter device 23 _B temporarily holds the congestion information a indicated by the contents of such an overhead, and also, via the concentrator / delivery device 61 _B and the transmission path 56 _B , the network control center 57 _B.
Send to. Further, the adapter device 23 _B accesses the database 25 _B based on the identification information “A1” of the exchange and the identification information “2” of the line given by the congestion information a and responds to these identification numbers. The identification information (“B3”) of the own exchange (here, “exchange 58 _B3 ” for simplicity) and the line identification number (here,
For the sake of simplicity, it will be “3”. ) And get. Further, the adapter device 23 _B sends the congestion information a to the exchange 58 _B3 corresponding to such identification number (“B3”) via the communication link 24 _B2 .

The exchange 58 _B3 performs congestion control based on the call processing procedure according to the congestion information a, and is assigned with the identification information ("B3") of the exchange and the corresponding call. The identification information of the established line (herein, referred to as “3” for simplicity) is sent to the adapter device 23 _B via the communication link 24 _B3 .

The adapter device 23 _B searches the station information based on these identification information, and identifies the transmission device (here, the transmission device 63 _B1 for simplification) corresponding to the corresponding exchange and line ( "B1") is obtained. Further, the adapter device 23 _B , based on the frame format shown in FIG. 3, identifies the identification information “B3” of the exchange 58 _B3 corresponding to the overhead of a predetermined frame (or the identification information “B3” of the terminal station where the exchange is arranged). )) And the congestion information a are written via the transmission device 63 _B1 . That is, in the overhead, the exchange 58 _B3 that relayed the call corresponding to the congestion information received from the terminal station 21 _A.
Is the identification information "B3" (or identification information "B" in the exchange is arranged terminal station) is appended, this way the terminal station 21 via the transmission channel 53 ₂ frame overhead is rewritten by _C Sent to.

In the terminal station 21 _C , the switches and lines to be connected in the terminal station 21 _B corresponding to each combination of the switches 58 _{B1 to} 58 _BN arranged in the terminal station 21 _B and the lines accommodated in these switches. Identification information is registered in the database 25 _C in advance as station information. The transmission device 59 _C1 is connected to the transmission line 5
The content of the overhead of each frame received via 3 ₂ is extracted and the adapter device 2 via the communication link 24 _C1.
Send to 3 _C. The adapter device 23 _C once holds the congestion information a indicated by the contents of such overhead,
In addition, the data is sent to the network control center 57 via the collecting / delivery device 61 _C and the transmission path 56 _C. In addition, the adapter device 23
_C accesses the database 25 _C based on the identification information "B3" of the exchange and the identification information "3" of the line given by the congestion information a, and the exchange () of its own station corresponding to these identification numbers ( Here, for the sake of simplicity, "exchange 58
_C2 ". ) Identification information ("C2") and the line identification number (here, "3" for simplicity). Further, the adapter device 23 _C sends the congestion information a to the exchange 58 _C2 corresponding to such identification number (“C2”).
Is sent. The exchange 58 _C2 performs congestion control based on the call processing procedure according to such congestion information a.

As described above, according to the present embodiment, for each call, the transfer route and the history of the corresponding call at the time of congestion are subjected to call processing (including relay processing), a terminal station or a relay station (or an exchange). ) Identification information, and such identification information is added to the congestion information and transmitted to the adjacent relay station, destination terminal station, and network control center 57.

Therefore, in the terminal station, the relay station and the network control center 57, compared with the conventional example in which the terminal station and the relay station individually send the congestion information which does not include the call identification information to the network control center 57. It becomes possible to promptly and reliably grasp the congestion state and perform the congestion control adapted to the result of the grasping.

FIG. 4 is a diagram showing an embodiment corresponding to the invention described in claim 2. In FIG. The difference between this embodiment and the embodiment shown in FIG. 2 is that terminal stations 41 _A and 41 _B are provided instead of the terminal stations 21 _A and 21 _B , respectively, and a relay station 42 is used instead of the relay station 22.
And these terminal stations and relay stations are respectively equipped with transmission line 4
It is connected to the route analysis center 44 via 3 _A to 43 _C.

The difference between the terminal station 41 _A and the terminal station 21 _A is that the exchanges 58 _{A1 to} 58 _AN are connected to the transmission path 43 _A via the route analysis device 45 _A. The difference between the relay station 42 and the relay station 22 is that the exchanges 58 _{B1 to} 58 _BN are connected to the transmission path 43 _B via the route analysis device 45 _B.

The difference between the terminal station 41 _C and the terminal station 21 _C is that the exchanges 58 _{C1 to} 58 _CN are connected to the transmission path 43 _C via the route analysis device 45 _C. The operation of this embodiment will be described below.

In the terminal station 21 _A , the connection relation between the exchanges 58 _{A1 to} 58 _AN and the transmission devices 59 _{A1 to} 59 _AN is stored in the database 25 _A as station information based on the configuration of the terminal station 21 _A.
Recorded in advance.

When a call is made to any one of the exchanges 58 _{A1 to} 58 _AN (here, for the sake of simplicity, a call is made to "exchange 58 _A1 ".), The exchange makes such a connection via the communication link 24 _A2. Call information b (calling subscriber number
(= 045-470-1462), destination subscriber number (= 044-777-111)
1), identification information indicating line speed and service (= 3),
Major user identification information (= “Fujitsu”), user type information (= “electrical equipment manufacturer”), transmission time (= 92.12.14 8:40),
End time (= 92.12.14 8:41), call status (= “busy”), cause of call loss (= “busy”), switch identification information (= “A1”), route information (= “A”) Including others. ) And the identification number (here, the allocated line to the appropriate call, for simplicity and "2".) And sends to the adapter device 23 _A to.

The adapter device 23 _A takes in these pieces of information, searches for station information based on the identification information of the exchange and the identification number of the line indicated in the information, and the transmission device (corresponding to the corresponding exchange and line). Here, for the sake of simplicity, the identification information of the transmission device 59 _A1 is set ("A1").
To get Further, the adapter device 23 _A , based on the frame format of the new synchronous interface shown in FIG.
8 _A1 identification information "A1" (or identification information "A" of the terminal station where the exchange is located) and the above-mentioned call correspondence information b
The traffic information consisting of
_It is sent to the relay station 22 via _A1 and the transmission path 53 ₁ .

In the relay station 22, the exchanges and the lines to be connected within the own station are identified corresponding to each combination of the exchanges 58 _{A1 to} 58 _AN in which the terminal station 21 _A is arranged and the lines accommodated in these exchanges. The information and the identification information of the transmission devices 63 _{B1 to} 63 _BN connected in the local station corresponding to each combination of the exchanges 58 _{B1 to} 58 _BN and the lines corresponding to these outgoing routes,
It is registered in the database 25 _B in advance as station information.

The transmission device 62 _B1 extracts the contents of the overhead of each frame received via the transmission line 53 ₁ ,
It is sent to the adapter device 23 _B via the communication link 24 _B1 . The adapter device 23 _B once holds the traffic information b indicated by the contents of such overhead and sends it to the collecting and delivering device 61 _B. In addition, the adapter device 23
_B accesses the database 25 _B based on such identification information of the exchange given by the traffic information "A1" and the line identification information "2", these identification numbers own station exchange corresponding to (here Then, for simplification, the identification information (“B3”) of the “switch 58 _B3 ”) and the line identification number (here, “3” for simplicity) are acquired. The adapter device 23 _B sends the traffic information to the exchange 58 _B3 corresponding to such identification number (“B3”) via the communication link 24 _B2 .

The exchange 58 _B3 has the identification information ("B3") of the exchange indicated by such traffic information and the identification information of the line allocated to transfer the corresponding call (here, for simplification, " 3 ")) to the adapter device 23 _B.

Adapter device 23_BIs their identification information
Search for station information based on the
The corresponding transmission device (here, for the sake of simplicity, the transmission device 63_B1
And ) Identification information (referred to as "B1"). Furthermore
The adapter device 23_BIs the frame four shown in FIG.
Based on the matte, the overhead for a given frame
Exchange machine 58_B3Identification information "B3" (or its
The identification information "B") of the terminal station in which the exchange is arranged and the above-mentioned
Write traffic information and transmit device 63 _B1Through
Transmission line 53₂Send to.

That is, in the overhead, the terminal station 21 _A
The identification information "B3" of the exchange 58 _B3 (or the identification information "B" of the terminal station in which the exchange is arranged) that has performed the call relay processing corresponding to the traffic information received from is added in this way. The frame with the rewritten overhead is sent to the terminal station 21 _C via the transmission path 53 ₂ .

In the terminal station 21 _C , the database 25 _C is connected in the local station corresponding to each combination of the exchanges 58 _{B1 to} 58 _BN in which the terminal station 21 _B is arranged and the lines accommodated in these exchanges. The exchange and line identification information to be performed are registered in advance as station information.

Transmission device 59_C1Is the transmission line 53₂Through
Extract the overhead content of each frame received,
Communication link 24_C1Via the adapter device 23_CSend to
It Adapter device 23_COf such overhead
The traffic information indicated by the content is temporarily stored and collected.
Distribution device 61_CSend to. In addition, the adapter device 23 _C
Of the switch given by such traffic information
Based on the identification information “B3” and the line identification information “3”
Database 25_CAccess these identification numbers
Corresponding local exchange (For the sake of simplicity, here
58_C2". ) Identification information (“C2”) and the line
The identification number (here, "3" for simplicity)
get. Furthermore, the adapter device 23_CIs like this
The exchange 58 corresponding to the identification number ("C2")_C2To trough
Quick information. Switch 58_C2Is like this
In the traffic information, the exchange of your own station (here,
"Exchange 58_C2". ) Identification information ("C2")
Alternatively, add the identification information (“C”) of your own station to the route
Analyzer 45_cSend to. Route analysis device 45_cIs
In this way, the exchange 58_C1~ 58_CNEmotions given by
Accumulate information.

As described above, according to the present embodiment, for each call, the transfer route between the stations and the history of the call identify the terminal station or relay station (or exchange) that has performed the call processing (including the relay processing). Such identification information is added to the traffic information and transmitted to the adjacent relay station, the destination terminal station, and the line / path management center 55.

Therefore, in the route analysis devices 45 _{A to} 45 _C and the line / path management center 55 provided in the terminal stations, the relay stations, and the destination terminal stations, the terminal stations and the relay stations individually provide call identification information. Compared to the conventional example in which traffic information not included is sent to the line / path management center 55, the amount of traffic and distribution of traffic can be grasped quickly and reliably, and the transmission system can be optimized and efficient based on the result of the grasp. It becomes possible to operate it.

[0051]

As described above, according to the present invention, the identification information of the relay processing of each call and the station that performed the call processing and the congestion information or traffic information related to the corresponding call are the frame format of the new synchronous interface. Is placed in the surplus field of the overhead based on, and is transmitted to the adjacent station or the destination station via the transmission line suitable for the new synchronization interface.

That is, in an adjacent station or a destination station connected via such a transmission line, congestion information or traffic information not including call identification information is transmitted from each station to a network control center, a line or a path. Compared to the conventional example that was transmitted to the management center, congestion information and traffic information can be processed more reliably for each call, so the congestion status, traffic volume, or traffic density can be reliably grasped based on the results of that processing. , Prompt congestion control for the generated congestion state and operation of the line adapted to the ever-changing use condition of the line.

Therefore, in the transmission system to which the present invention is applied, the efficiency of maintenance and operation can be improved and the quality of service to the user can be improved.

[Brief description of drawings]

1 is a principle block diagram of the invention according to claims 1 and 2;

FIG. 2 is a diagram showing an embodiment corresponding to the invention described in claim 1.

FIG. 3 is a diagram showing a frame format of a new synchronization interface.

FIG. 4 is a diagram showing an embodiment corresponding to the invention described in claim 2.

FIG. 5 is a diagram showing a configuration example of a transmission system to which a new synchronization interface is applied.

[Explanation of symbols]

 11 transmission line 13,21 exchange means 15 storage means 17,23 destination selection means 19,25 transmission means 21,41,51 terminal station 22,42,52 relay station 23 adapter device (ADP) 24,60 communication link 25 database (DB) 43, 53, 54, 56 Transmission line 44 Route analysis center 45 Route analysis device 55 Line / path management center 57 Network control center 58 Switch 59, 62, 63 Transmission device 61 Operation information collection and distribution device (MCM)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadao Narahei 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Ken Tsuchiya 1015, Kamedotachu, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Hiroi Yamazaki 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited

Claims (2)

[Claims] 1. A transmission line adapted to a new synchronous interface.
(11 _{1 to} 11 _N ) are individually connected to perform call processing for calls that use these transmission paths as either incoming or outgoing routes, and monitor the presence or absence of congestion based on the call processing procedure. And a switching means (13 _{1 to} 13 _N ) for transmitting congestion information indicating each congestion state and a point of occurrence, and the transmission path (11 ₁ to 13 _N ) individually associated with the ingress path and the egress path. 11 _N ) and storage means (15) for holding the connection relationship between the exchange means (13 _{1 to} 13 _N ) as station information
And the congestion information sent from the exchanging means (13 _{1 to} 13 _N ) is taken in, the station information is referred to based on the exchanging means of the sender, and the congestion state corresponding to the congestion information is detected. Destination selection means (1) for selecting a transmission path as an outgoing path
7), the congestion information sent from the exchange means of the transmission source and the identification information of the station in which the exchange means is arranged are generated in an overhead frame based on the frame format of the new synchronization interface, and the frame is generated. A congestion information transmission system, comprising: a transmission means (19) for transmitting a frame to the transmission path selected by the transmission destination selection means (17). 2. A transmission line adapted to a new synchronous interface.
(11 _{1 to} 11 _N ) are individually connected to perform call processing for calls that use these transmission paths as either ingress or egress routes, and indicate traffic volume or traffic density for each call type. exchange means for sending information (21 ₂₁ to
1 _N ) and the ingress and egress routes individually corresponding to the connection information between the transmission lines (11 _{1 to} 11 _N ) and the exchanging means (21 _{1 to} 21 _N ). Storage means (15)
And the traffic information sent from the exchanging means (21 _{1 to} 21 _N ) is taken in, the station information is referred to based on the exchanging means of the transmission source, and the transmission becomes the outgoing route of the call indicated by the traffic information. Destination selection means (23) for selecting a route
And a traffic information transmitted from the source's exchanging means and the identification information of the station in which the exchanging means is arranged, are generated in an overhead frame based on the frame format of the new synchronization interface, and the frame is generated. A traffic information transmission system comprising: a transmission means (25) for transmitting to the transmission path selected by the transmission destination selection means (23).