JPH1169394A - Sharing method for protocol control memory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the sharing method of a protocol control memory, which reduces the control memory used in respective communication protocols when plural types of communication protocols are loaded on one processor. SOLUTION: The control memory 23 required for respective calls in the respective communication protocols is arranged for a memory which can be accessed in common by the respective communication protocols. The size of the control memory 23 is set to be that obtained by giving allowance to the largest size required in the respective communication protocols. When the call is generated, a call reference number 22 being a unique number allocated to the call is set to be the number common to the respective communication protocols.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sharing a protocol control memory, and more particularly, to an ISUP (ISDN).
user part; ISDN user department) or TU
The present invention relates to a method for sharing a control memory used for each communication protocol such as P (telephone user part; telephone user unit).

[0002]

2. Description of the Related Art As a conventional technique for forming a shared memory in a multiprocessor type exchange, for example, Japanese Patent Laid-Open No. 5059/1990.
Japanese Patent Application Laid-Open No. 8 (1996) -1995 discloses a method in which a call processor registers a signal in a shared memory and a plurality of signal processors access the registered contents in order to reduce the operating load of the call processor and prevent signal processing delay. Is described. In this method, a shared memory device is provided and connected by a common bus for a call processor and a signal processor to share a memory.

[0003]

However, the above prior art has the following problems.

[0004] A first problem is that a shared memory device is required even in a system having a single processor configuration.

The reason is that the shared memory device is one of the system components.

A second problem is that when a plurality of types of communication protocols are mounted on one signal processor, a control memory used for each communication protocol is not shared.

The reason is that sharing of a control memory used in each communication protocol is not considered at all for a plurality of types of communication protocols.

[0008] Among the user units defining the service control function in the common channel signaling system, an ISDN user unit (ISUP) used for circuit switching control realizing the ISDN function, and a telephone user unit (T) used as a telephone network.
When a control memory used for control of each protocol in a communication protocol such as UP) is configured to have a call-corresponding area in a separate area for each protocol. The memory capacity is enormous.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and has as its object to provide a control memory used in each communication protocol when a plurality of types of communication protocols are mounted on one processor. Another object of the present invention is to provide a method for sharing a protocol control memory, which reduces the number of memory devices.

[0010]

In order to achieve the above object, a protocol control memory sharing method according to the present invention is a protocol control memory sharing method in which a plurality of types of communication protocols are mounted on one processor. Therefore, the control memory required for each call in each communication protocol is arranged in a memory that can be commonly accessed in each communication protocol, and the size of the control memory is required in each communication protocol. It is characterized in that it has a size that allows more room for the largest size to be made.

The present invention is characterized in that, when a call is generated, a call reference number, which is a unique number assigned to the call, is a number common to the above-mentioned communication protocols.

[0012]

Embodiments of the present invention will be described below. According to the present invention, in the preferred embodiment, the control memory required for each call in each communication protocol is placed in a memory that can be commonly accessed in each communication protocol (shared protocol control memory in FIG. 2). ,
When a call is generated, a call reference number, which is a unique number assigned to the call, is used as a common number for each of the communication protocols, and the control memory is accessed using the call reference number.

In the embodiment of the present invention, each communication protocol uses a common control memory which is referred to by a call reference number which is a unique number assigned when a call is generated. This eliminates the need for having a control memory required for each communication protocol for each communication protocol, thereby achieving a reduction in memory capacity.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

FIG. 1 is a diagram showing the configuration of one embodiment of the present invention. Referring to FIG. 1, one embodiment of the present invention includes a plurality of communication protocol control units (# 1 to #
n) 12, a signal transmission / reception unit 13, and a control memory management unit 14.

A plurality of communication protocol control units # 1 to #n
Are provided for each protocol type, and perform control corresponding to each protocol.

The signal transmission / reception unit 13 determines the protocol type when transmitting / receiving a signal and receiving a signal, and activates the corresponding communication protocol control unit 12.

The control memory management unit 14 has a busy / idle (idl) of the call reference number 22 shown in FIG.
e), and the communication protocol common control memory 21 is allocated. FIG. 2 shows an embodiment of the present invention.
The configuration of a control memory commonly used by the communication protocol control units 12 # 1 to #n is shown.

The size of the control memory 23 indexed by the call reference number 22, which is a unique number assigned to each call, corresponds to the largest size required in each communication protocol control unit 12. The size should be large enough.

Next, the operation of one embodiment of the present invention will be described.
This will be described in detail below with reference to FIGS. FIG.
Shows a sequence when a call from the partner station is received.

The signal transmitting / receiving unit 13 detects a call from the call signal 31, sorts the protocol type of the call, and sends a call notification 32 to the corresponding communication protocol control unit 12.

Upon receiving the call notification 32, the communication protocol control unit 12 controls the control memory management unit 1 to secure the control memory 23 necessary for performing protocol control.
Then, a call reference number assignment request 33 is made to No. 4.

Upon receiving the call reference number assignment request 33, the control memory management unit 14 searches for an empty call reference number 22 and returns the call reference number 22 in a call reference number assignment request response 34.

The communication protocol control unit 12 having received the call reference number assignment request response 34
Then, the communication protocol common control memory 21 is indexed and the corresponding control memory 23 is used.

FIG. 4 shows a sequence when a call is transmitted from the own station. When transmitting a call, the communication protocol control unit 12 notifies the control memory management unit 14 of a call reference number assignment request 41.

Upon receiving the call reference number assignment request 41, the call control memory management unit 14 searches for an empty call reference number 22 and returns a call reference number assignment request response 42.

Upon receiving the call reference number assignment request response 42, the communication protocol control unit 12 indexes the communication protocol common control memory 21 with the notified call reference number 22, uses the corresponding control memory 23, and issues a call. The call request 43 is notified to the signal transmitting / receiving unit 13.

Signal transmitting / receiving section 12 receiving call request 43
Transmits a call signal 44 to the partner station.

[0029]

As described above, according to the present invention,
This has the effect of avoiding an increase in the capacity of the control memory required by various communication protocols.

The reason is that, in the present invention, the control memory required by various communication protocols is shared.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a shared protocol control memory in one embodiment of the present invention.

FIG. 3 is a sequence chart showing an operation at the time of receiving a call in one embodiment of the present invention.

FIG. 4 is a sequence chart showing an operation when a call is originated in one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Processor 12 Communication protocol control parts # 1 to #n 13 Signal transmission / reception part 14 Control memory management part 21 Communication protocol common control memory 22 Call reference number 23 Control memory 31 Call signal 32 Call notification 33 Call reference number assignment Request 34 Call reference number assignment request response 41 Call reference number assignment request 42 Call reference number assignment request response 43 Calling request 44 Calling signal

Claims (4)

[Claims] A method for sharing a protocol control memory in which a plurality of types of communication protocols are mounted on one processor, wherein a control memory required for each call in each communication protocol is provided.
It is arranged in a memory that can be commonly accessed by each of the communication protocols, and the size of the control memory is set to a size that allows a margin to the largest size required in each of the communication protocols. A method for sharing a protocol control memory. 2. The protocol control memory according to claim 1, wherein when a call is generated, a call reference number, which is a unique number assigned to the call, is a number common to the respective communication protocols. Sharing method. 3. The protocol control memory sharing method according to claim 1, wherein said control memory is accessed by a call reference number which is a unique number assigned to each call. 4. A communication memory comprising a plurality of communication protocol control units for controlling a plurality of types of communication protocols, wherein each communication protocol control unit includes a control memory required for protocol control for each call. Are arranged in a memory that can be accessed in common with each other (referred to as “common control memory”), and the size of the control memory is further increased to the largest size required in each of the communication protocols. When a call is generated, a call reference number, which is a unique number assigned to the call, is used as a common number for each of the communication protocol control units. A method for sharing a protocol control memory, comprising accessing the control memory using the common control memory index according to a number.