JP3761431B2 - Call connection control method, voice processing device accommodation method, mobile communication switch, and program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to accommodation control of a base station apparatus in an exchange network in a mobile communication system. The present invention also relates to accommodation control of an interoffice line in an exchange network between exchanges. The present invention is used in a large-capacity digital mobile communication switch (NMLS) that accommodates a large number of radio control areas.
[0002]
[Prior art]
A large-capacity digital mobile communication switching system (NMLS) that accommodates a large number of radio control areas has been developed including a subscriber switching function, a relay switching function, and a gateway switching function in the conventional PDC (Personal Digital Cellular Telecommunication System) system.
[0003]
This digital mobile communication switching system has a multiprocessor configuration including a plurality of processors in order to realize a subscriber switching function and a relay switching function.
[0004]
Here, in the case of accommodation of base station related devices in a digital mobile communication switching system, a speech processing device (SPE) such as a speech code decoding circuit is a call processor that accommodates a base station control device (BCE) in the same radio area. (CLP) is accommodated in the same call processor. At this time, the capacity of one base station controller (BCE) is about 720 channels, and the maximum number of channels per voice processing apparatus is 864 channels. When processing capacity per call processor is considered, call processing The ratio of processor: base station controller: speech processor is 1: 1: 1.
[0005]
[Problems to be solved by the invention]
However, since the voice processing apparatus needs to be distributedly accommodated, considering the distributed accommodation, it becomes 1: 1: 2, and it is necessary to install two voice processing apparatuses that use only about half of the maximum number of channels.
[0006]
FIG. 6 shows an example of the arrangement of such speech processing apparatuses. Base station modems are arranged so that the number of channels can be accommodated in each call processor, and a base station modem circuit (MDE) is further arranged. If the voice processing devices are arranged in each call processor so as to accommodate the (line) in a distributed manner, the number of channels used per voice processing device is about half of the maximum number of channels, and the voice processing devices are disposed wastefully. become.
[0007]
The present invention solves such a problem, and an object of the present invention is to provide an accommodation method and an exchange capable of preventing waste installation at the time of distributed accommodation of voice processing apparatuses and reducing the installation cost of the voice processing apparatus. In addition, the present invention provides an accommodation method and an exchange capable of performing connection control so that the voice processing device can be flexibly accommodated in the exchange without being restricted by the arrangement of the call processing processor. With the goal. In addition, the present invention provides a switch and a connection method for the same, in which connection control can be performed by a corresponding call processor in the same manner as in the control of accommodation of a voice processing device, as for accommodation control of an interoffice line between exchanges. The purpose is to do.
[0008]
[Means for Solving the Problems]
Connection control to the exchange network that carries the switching function in the exchange of the call channel is performed by a call processor having a multiprocessor configuration. At this time, the connection control of each call processor does not perform all the communication channels, but the accommodation range in the exchange network is managed in units of call processors.
[0009]
When looking at the base station apparatus side, the voice processing apparatuses are distributedly installed so that the base station modulation / demodulation apparatus can be accommodated in a plurality of voice processing apparatuses, and the base station modulation / demodulation apparatus is a call that accommodates the corresponding base station control apparatus. The processing processor can be accommodated in a voice processing device corresponding to the base station control device accommodated in another call processing processor.
[0010]
Here, the base station apparatus (base station modulation / demodulation apparatus) captures and assigns a free radio communication channel as a communication channel for the mobile device to communicate. This allocated call channel is notified to the base station controller and the call processor via the control channel. Upon receiving the notification (capture request) of the assigned call channel, the call processor executes connection control with the exchange network which is a switching unit on the exchange side of the notified call channel. Need to know the network's location. This network accommodation position refers to the position accommodated in the switching unit of the exchange, and corresponds to the interface number of the exchange network. When a call occurs, the base station modem apparatus allocates a free call channel and notifies the exchange of the assigned call channel number via the control channel. The call processor determines whether the communication channel notified from the line state management information managed by the own call processing processor is stored by the own processor in order to capture the notified communication channel, or other call It is determined whether the processor is accommodated. If another call processor is accommodated, the call processor is inquired about the accommodation location of the call channel, and a notification is made based on the accommodation location information. The voice processing apparatus is accommodated in the exchange network by connecting the call channels.
[0011]
The same applies to the inter-office line accommodation control from other exchanges, and the call processor also performs the inter-office line connection control to the exchange network. At this time, when notification of an unassigned inter-office line assigned from another exchange is made, position information for accommodating the inter-office line and a call processor for controlling the connection are determined. The call processor is determined by the number of the interoffice line notified by the resource management means for managing the location information in the switch network, which call processor is accommodated by the interoffice line assigned. This determined call processor performs control of connection to the switch network.
[0012]
It should be noted that the present invention can be implemented as a program that, when installed in a multiprocessor mobile communication exchange, causes the processor to operate as a call processor that performs the above-described operation.
[0013]
By doing in this way, when the voice processing devices are distributedly accommodated, they are not disposed wastefully, and the equipment cost of the voice processing devices can be reduced. Also, in connection control by distributed accommodation of inter-station lines, line connection control can be performed without waste.
[0014]
That is, the present invention is a call connection control method in which a plurality of call processors for performing call connection control are provided, and each call processor performs connection control of a call channel to a switch network in a switch, When receiving a notification of acquisition of a call channel for accommodating in the exchange network via the network, an inquiry is made to a means for managing the accommodation location information of the call channel in the exchange network for each call processor, and the obtained accommodation is obtained. The call processor performs connection control of the call channel based on position information.
[0015]
Further, the present invention provides a method for accommodating a voice processing apparatus in which a voice processing apparatus connected to a base station modem is accommodated in a switch network in a switch by a communication channel. A call channel that accommodates a voice processing device is allocated from among the call channels, and the assigned call channel is notified to a call processor that accommodates the base station control device via a control channel, and the call processing processor When the call channel assigned by the base station modem is accommodated by another call processor, the location information of the call channel in the exchange network by inter-processor communication to the other call processor And connection control is performed based on the accommodation position information.
[0016]
Further, the present invention relates to an interoffice line accommodation method for accommodating interoffice lines from other exchanges in an exchange network in the exchange, and assigns an empty interoffice line to the exchange according to a call generated by the other exchange. , Notifying the allocated inter-station line via the control channel, obtaining the accommodation position information from means for managing the accommodation position information of the notified inter-station line in the exchange network in units of call processors, and A call processor that accommodates the interoffice line controls connection of the interoffice line to the exchange network.
[0017]
The present invention also includes a plurality of call processing processors that perform call connection control, and each of the call processing processors performs connection processing based on accommodation location information in an exchange network in the exchange that has acquired the notified call channel. In the mobile communication switching system comprising means for performing communication, the mobile communication switching system includes resource management means for managing the location information of the call channel in the switch network in units of the call processing processor, the call processing processor including the switched call channel switch network It further comprises means for acquiring the location information on the network from the resource management means and executing connection control to the exchange network.
[0018]
Further, the present invention is a mobile communication switch accommodating a plurality of base stations, the mobile communication switch accommodating a plurality of call processing processors each accommodating a corresponding base station controller and performing call connection control, A plurality of base station modulation / demodulation devices corresponding to each other and a voice processing device for performing voice processing, wherein the base station modulation / demodulation device can assign a speech channel to each different voice processing device, When the base station modem of the base station controlled by the base station controller accommodated by the own call processor allocates a speech channel to a voice processor under the control of the base station controller accommodated by another call processor Inquires of the other call processing processor about the location information of the allocated call channel in the exchange network through inter-processor communication. , Characterized in that it comprises a connection control means for connecting traffic channel based on the obtained accommodation position information.
[0019]
The present invention is also directed to a mobile communication switching system comprising a plurality of call processing processors for performing call connection control for connecting an allocated inter-station line to a switching network in the switching system, and the location information of the inter-station line in the switching network. Resource management means for managing the information in units of call processors, means for querying the resource management means for the accommodation position information of the allocated vacant inter-station lines notified from other exchanges, and the inter-station obtained by the inquiry means And a means for determining a call processor for performing call connection control based on the line accommodation position information and causing the call processor to perform control.
[0020]
In addition, the present invention is installed in a mobile communication exchange having a plurality of processors, thereby causing the processor to operate as a call processor for performing connection control of a speech channel. When the notification of the call channel for accommodating the voice processing device in the exchange network is received, if the call channel is accommodated in another call processing processor, the processor for the other call processing processor It is characterized by operating as a call processing processor that inquires the accommodation location information of the call channel to the exchange network through inter-communication and controls connection of the voice processing device based on the obtained accommodation location information.
[0021]
In addition, the present invention is installed in a mobile communication exchange having a plurality of processors, thereby causing the processor to operate as a call processing processor for controlling connection of assigned inter-station lines, and Based on the information of the resource management means that manages the location information of the exchange network in the exchange in units of the call processor, the call processor that controls the connection of the interoffice line is determined and notified by the call processor It is characterized by operating as a call processor for controlling connection of the inter-station line.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0023]
(First Example)
FIG. 1 shows the arrangement of base station-related devices in an exchange (large capacity digital mobile communication exchange) in which the present invention is implemented.
[0024]
Here, the exchange accommodates a plurality of base stations, and includes a plurality of speech processing devices each including a call processor (CLP) that performs call connection control and a speech code decoding circuit. 1 shows a relationship between a call processor (CLP) and a base station controller (BCE), a voice processor (SPE) and a call processor (base station controller and radio control area). A base station controller (BCE) 11 that controls the signal path surfaces of the modems (MDE) 16, 17, 18 is accommodated in the same call processor (CLP # 1) 12. On the other hand, the base station modem (MDE) 16 , 17, and 18 are accommodated in the speech processing unit (SPE) 14 and the speech processing unit 15, the speech processing unit 14 is accommodated in the call processing processor 12, and the speech processing unit 15 is accommodated in the call processing processor 13. Thus, the respective call processors 12 and 13 perform connection control of the call channel.
[0025]
Here, in the present invention, the call processing processor 12 that selects the speech channel assigned to the speech processing device 15 by the base station modem 17, transmits the signal to the base station control device 11, and receives the signal is different. It is characterized in that the connection control of the speech channel of the voice processing device 15 accommodated in the processor 13 is performed.
[0026]
FIG. 2 shows the accommodation relationship between the base station modem (MDE), the speech processing unit (SPE), the base station control unit (BCE), and the call processor (CLP) in the embodiment of the present invention, and the accommodation relationship in the exchange network. FIG.
[0027]
An exchange network (NW) refers to the configuration of a line interface service control circuit (SIF) and a speech path switch (SW) that accommodates a HUB and a voice processing device behind a call processor (CLP) in a multiprocessor configuration. The switching unit executes switching in the exchange. When viewed from the base station apparatus side, the switching unit of the exchange accommodating the call processor (CLP) and the voice processor (SPE) is shown. The call processors 211 and 212 are responsible for call control of the exchange, and include connection control units 221 and 222 that perform connection control such as call channel switching control, resource management units 231 and 232 that perform resource management such as a call channel, Line state holding units 241 and 242 that hold line state information indicating whether the communication channel is accommodated or whether the call channel is in use or not are available. Base station controllers (BCEs) 251 and 252 are under the control of accommodated call control processors 211 and 212, respectively. Further, the voice processing devices 261 and 262 are accommodated in the exchange network 20 by a speech channel at respective accommodation positions, and the base station modems 271 and 272 are connected to the speech processing devices 261 and 262 by a speech channel, respectively. Reference numerals 271 and 272 are connected to the base station controllers 251 and 252 and the call processors 211 and 212, respectively, through control channels.
[0028]
The communication channel used by the mobile device for communication is assigned to the communication channel used by the base station modem 271 from the idle communication channel, and is notified to the base station controller 251 and the call processor controller 211 by the control channel. The connection control unit 221 notifies the notified call channel to the resource management unit 231 and collects the network accommodation position for the call ch from the line state holding unit 241. The line state holding unit 241 simultaneously closes the corresponding network accommodation position and manages it as a busy state for the corresponding call. The connection control unit 221 executes connection control based on the collected network accommodation location.
[0029]
Further, the resource management unit 231 and the line state holding unit 241 perform management of the call channel / network accommodation position corresponding to the voice processing device 261 closed to the call processor 211 accommodation. Therefore, the management of the communication channel / network accommodation position corresponding to the voice processing device 262 accommodated in another call processor control device 212 is performed by the resource management unit 232 and the line state holding unit 242 of the other call processor control device 212. ing.
[0030]
FIG. 3 shows a configuration example of connection arrangement in the case where the base station modulation / demodulation apparatus performs connection control by assigning a speech channel to a voice processing apparatus under another call processing processor.
[0031]
Here, as in FIG. 2, reference numeral 30 is a network of the exchange, reference numerals 311 and 312 are call processor control devices of the exchange, reference numerals 321 and 322 are connection control units, 331 and 332 are resource management units, and 341 and 342 are Line state holding units, 351 and 352 are base station controllers (BCE), 361 and 362 are speech processors (SPE), and 371 and 372 are base station modems (MDE).
[0032]
Here, in order to distribute and accommodate the voice processing devices (SPE), the speech channel is distributed from the base station modem 371 to the voice processing devices 361 and 362. Similarly, the communication channel is also distributed from the base station modem 372 to the voice processors 361 and 362.
[0033]
The base station modem 371 allocates a speech channel for the voice processor 362, and the control signal is notified to the call processor 311 through the base station controller 351 by the control channel. Upon receiving the control signal, the connection control unit 321 makes a request for capturing the subscriber line (network accommodation position) to the resource management unit 331. The resource management unit 331 communicates with the resource management unit 332 of the call processing processor 312 because it is determined from the management information held by the line state holding unit 341 that the notified call channel is accommodated in the call processing processor 312. . In this way, the network accommodation position information of the call processor 312 is obtained.
[0034]
The operation of FIG. 3 will be described using the control flow diagram of the resource management unit shown in FIG. 4 and the management data of the line state holding unit shown in FIG.
[0035]
The connection control unit 402 of the call processor 401 that has received the control signal makes a request for capturing the subscriber line (network accommodation location) to the resource management unit 403. The resource management unit 403 collects the accommodation processor number and the network accommodation position information from the line state holding unit 404. The resource management unit 403 compares the collected processor number with its own processor number (405), and in the case of the own processor, returns the collected network accommodation position information to the connection control unit (406). In the case of another processor, inter-processor communication is performed to the other processor, the network accommodation position information is inquired, and the network accommodation position information is acquired (407). The resource management unit 411 of the other call processor 410 collects the accommodation processor number and the network accommodation position information from the line state holding unit 412. When the resource management unit 411 compares the collected accommodated processor number with its own processor number (413), it returns the collected network accommodation location information to the inter-processor communication source for the self processor (414). The connection control unit 402 connects the call channel notified by the obtained network accommodation position information. Here, the resource management unit performs centralized management with the resource centralized management processor, but since the table is performed for each call processor, the location information of the call channels accommodated by other call processors is different from that of other call processors. This is a process of inquiring the processing processor.
[0036]
In the embodiment described above, the resource management unit and the line state holding unit manage the arrangement of the voice processing unit (SPE) and the base station control unit (BCE) so that they are not restricted by the software processing of the call processing processor (CLP). In addition to managing the call processing processor to be accommodated in addition to the call channel and the network accommodating position, the present invention can be similarly applied to accommodating inter-station lines.
[0037]
(Second embodiment)
In this case, as shown in FIG. 5, the inter-station lines are also distributedly accommodated, and the inter-station lines each have a call processor to be accommodated, and in the case of outgoing connection, the accommodated call processor Performs the connection control. In the case of an incoming connection from another exchange, the control signal is input to the common signal control processor (CSP) through the common signal line, so the call processor that accommodates the notified interoffice line is determined. At this time, the call processing processor that collects the accommodation location information and accommodates the notified inter-station line by making an inquiry to the resource management means that manages the accommodation location information in the exchange network in units of call processors. Then, the determined call processor performs connection control of the interoffice line based on the accommodation position information.
[0038]
For example, as shown in FIG. 5 (a), it is assumed that the inter-office line with the station A is accommodated in the call processor CLP # 1, and the inter-office line with the station B is accommodated in the call processor CLP # 2. . At this time, as shown in FIG. 5 (b), the B station seizes the interoffice line # 2, and the A station seizes the interoffice line # 3 and notifies the common signal control processor (CSP) of the seizure request. At this time, the call processor accommodating the inter-station line is determined based on the number of the inter-station line, and the inter-station line # 2 with the B station is connected by the call processor CLP # 1 and connected to the A station. Call processing processor CLP # 2 performs connection processing for interoffice line # 3.
[0039]
Further, the management method of the resource management unit and the line state holding unit of the inter-station line to be controlled is the same as that in FIG.
In addition, it can be made to operate | move as a switch of the said Example by installing a program in the mobile communication switch of a multiprocessor system. That is, when a processor is operated as a call processor, and the call processor receives a call channel capture request for accommodating a voice processing apparatus in a switch network via a control channel, the call channel When the communication channel is not accommodated by the processing processor, it can be operated as a call processing processor that inquires of the call processing processor that manages the communication channel by inter-processor communication, acquires the accommodation location information, and performs connection control.
[0040]
This program can be stored in a storage medium and installed in an exchange, or can be installed via a communication line.
[0041]
[Explanation of effects]
ADVANTAGE OF THE INVENTION According to this invention, the useless installation at the time of dispersion | distribution accommodation of a speech processing unit (SPE) can be prevented, and the installation cost of a speech processing unit can be reduced. Also, the cost can be reduced by processing by software in the distributed accommodation of inter-station lines.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of arrangement of base station-related devices in an exchange according to the present invention.
FIG. 2 is a diagram showing a configuration of a first embodiment of the present invention.
FIG. 3 is a diagram showing a setting example of a call channel in the first embodiment of the present invention.
FIG. 4 is a diagram for explaining a call channel connection operation according to the first embodiment;
FIG. 5 is a diagram showing a configuration of a second embodiment for connecting inter-station lines.
FIG. 6 is a diagram illustrating an arrangement example of base station-related devices of a conventional example.
[Explanation of symbols]
11 Base station controller (BCE)
12, 13 Call processor (CLP)
14, 15 Speech processing unit (SPE)
16, 17, 18 Base station modem (MDE)
20 Switching network 221, 222, 231, 322 Connection control unit 231, 232, 331, 332 Resource management unit 241, 242, 341, 342 Line state holding unit

Claims (8)

A call connection control method in which a plurality of call processors for performing call connection control are provided, and each call processor performs connection control of a call channel to a switch network in a switch,
When a call channel capture notification for accommodating in the exchange network is received via the control channel, the communication channel inquiry unit is inquired of means for managing the location information of the call channel in the exchange network. A call connection control method, characterized in that a call processor that has received the capture notification based on the received location information performs connection control of the call channel. In a method for accommodating a voice processing apparatus for accommodating a voice processing apparatus connected to a base station modulation / demodulation apparatus in a switch network in a switch by a communication channel,
A base station modulation / demodulation device connected to a mobile station assigns a speech channel that accommodates a voice processing device from among idle speech channels, and a call processor that accommodates the base station control device via a control channel. Notify this assigned call channel,
The call processor that has received the notification, when the call channel assigned by the base station modem is accommodated by another call processor, communicates to the other call processor by inter-processor communication. A method for accommodating a voice processing device, comprising: acquiring accommodation location information in an exchange network and performing connection control based on the accommodation location information. In the inter-office line accommodation method for accommodating inter-office lines from other exchanges in the exchange network in the exchange,
According to the call generated by the other exchange, assign an empty interoffice line to the exchange,
Via the control channel to notify the assigned station line, acquires accommodation position information receiving position information from the means for managing the call processor unit to the notified exchange network of the station between the lines, the notification A method for accommodating inter-station lines, wherein a call processor that accommodates the inter-station lines that receives the call performs control of connection of the inter-station lines to the exchange network. A plurality of call processors that perform call connection control, each of the call processors including a unit that performs connection processing based on accommodation location information to an exchange network in the exchange that has acquired the notified call channel; In mobile communication exchanges,
Resource management means for managing the location information of the call channel in the exchange network for each call processor;
The call processing processor that has received the notification includes means for acquiring location information of the notified call channel in the exchange network from the resource management means and executing connection control to the exchange network. Telecommunications exchange. A mobile communication switch accommodating a plurality of base stations,
The mobile communication switching system includes a plurality of call processing processors that each accommodates a corresponding base station controller and performs call connection control, and a voice processor that accommodates a plurality of corresponding base station modems and performs speech processing, respectively. With
The base station modulation / demodulation device can assign a speech channel to different audio processing devices,
The call processor is a voice processor that is controlled by a base station controller accommodated in another call processor by the base station modem of the base station controlled by the base station controller accommodated by the own call processor. A connection that, when a call channel is assigned, inquires the other call processing processor about accommodation location information of the assigned call channel to the exchange network through inter-processor communication, and connects the call channel based on the obtained accommodation location information. A mobile communication switching system comprising a control means. In a mobile communication switching system comprising a plurality of call processing processors for performing call connection control for connecting an assigned inter-station line to a switching network in the switching system,
Resource management means for managing the location information of inter-station lines to the exchange network in units of call processors;
Means for inquiring of the resource management means the accommodation position information of the allocated vacant interoffice line notified from the other exchange;
Mobile communication comprising: a call processing processor that performs call connection control based on accommodation position information of the inter-station line obtained by the inquiry means and means for causing the call processing processor to perform control switch. By being installed on a mobile telecommunication switch with multiple processors,
Operating the processor as a call processor for controlling connection of a call channel;
The call processor, when receiving the notification of the speech channel for accommodating the exchange network audio processing device via the control channel, in which the speaking channel informed is accommodated in the other call processor In some cases, call processing for inquiring the other call processing processor about accommodation location information to the exchange network of the call channel by inter-processor communication, and controlling connection of the voice processing device based on the obtained accommodation location information A program characterized by operating as a processor. By being installed on a mobile telecommunication switch with multiple processors,
Causing the processor to operate as a call processor that performs connection control of an assigned inter-station line;
A call processor that performs connection control of the notified interoffice line is determined based on information of resource management means that manages the location information of the exchange network in the exchange of the notified interoffice line in units of the call processor. And a program that operates as a call processor that performs connection control of an interoffice line notified by the call processor.

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