CN1870762B - Method and system for transmitting signalling message - Google Patents

Abstract

The invention discloses a method for distributing signaling messages. The call reference value of the processing entity identifier of the processing entity of the second call; the call-out switch receives the signaling message sent via the call-in switch, acquires the call reference value included in the received signaling message, and converts the received The signaling message of is distributed to the processing entity corresponding to the processing entity identifier carried in the obtained call reference value. The invention also provides a signaling message distribution device and a switch. According to the present invention, by making the call reference CR unit of the QSIG message packet have a processing entity identifier, the switch can directly distribute the QSIG message to the returned signaling message, thereby greatly shortening the query matching time and improving the processing of the system Performance, thus further improving the real-time performance of the protocol.

Description

A method and system for signaling message distribution

technical field

The present invention relates to a communication technology, in particular to a method and device for distributing signaling messages.

Background technique

As shown in FIG. 1 , the QSIG (Unified International Enterprise Network Signaling Standard) signaling was proposed by ECMA (European Computer Association), and this signaling is a signaling standard between switch nodes in a private network. QSIG signaling can provide intercommunication functions for telephones and various integrated services among PINXs (private integrated services network switches) in the private switching network.

QSIG is developed from ITU-T's Integrated Services Digital Network (ISDN). As shown in Figure 2, its protocol structure is similar to ISDN's No. 1 Digital Subscriber Signaling DSS1 protocol, and all follow the ISO reference model.

As shown in Figure 3, the basic call service control of the QSIG protocol is very similar to the Q931 of ISDN, and the basic call service control process of the QSIG protocol will be briefly described below with reference to Figure 3 .

Step 1, call establishment;

Step 2, call connection;

Step 3, ringing;

Step 4, connect;

Step 5, connection confirmation, at this time the call is established, and the user terminal can communicate on the established path;

Step 6. After the user terminal finishes talking, disconnect the connection;

Step 7, release the resources occupied by this call;

Step 8, the release is completed.

In each signaling interaction process of the above call service control process, PINX needs to query the call instance information to determine the call and control the call, such as performing operations such as connection and release. In this way, in the process of signaling interaction, it is necessary to query call instance information and perform operations such as judgment. It takes a long time, thereby reducing the quality of the communication system.

Contents of the invention

The purpose of the present invention is to provide a method and device for distributing signaling messages, which can shorten the signaling interaction time, thereby improving the quality of the communication system.

The present invention provides a signaling message distribution method, including:

The call-out end switch generates a signaling message, and sends the generated signaling message to the call-in end switch, wherein the generated signaling message includes a call reference value carrying the processing entity identifier of the processing entity participating in this call;

The call-out switch receives the signaling message sent via the call-in switch, obtains the call reference value included in the received signaling message, and distributes the received signaling message to the call reference value carried in the obtained call reference value. The processing entity identifies the corresponding processing entity.

The signaling message includes mandatory elements and optional elements.

The processing entity identifier is set in a mandatory element of the signaling message.

The mandatory units include a signaling identifier unit, a call reference unit, and a message type unit.

The processing entity identifier is set in the call reference unit.

The signaling message received by the outgoing switch is associated with the signaling message sent by the outgoing switch to the incoming switch.

The invention also discloses a device for distributing signaling messages, including:

The receiving unit is configured to receive a signaling message sent via the call-in terminal switch, the signaling message includes a call reference value carrying the processing entity identifier of the processing entity participating in this call;

A distributing unit, connected to the receiving unit, configured to acquire the call reference value included in the received signaling message according to the signaling message received by the receiving unit, and distribute the received signaling message to the acquired The processing entity identifier carried in the call reference value corresponds to the processing entity.

The invention also discloses a switch, including:

A signaling message distribution device, configured to distribute signaling messages, the signaling message distribution device comprising:

The receiving unit is configured to receive a signaling message sent via the call-in terminal switch, the signaling message includes a call reference value carrying the processing entity identifier of the processing entity participating in this call;

A distributing unit, connected to the receiving unit, configured to acquire the call reference value included in the received signaling message according to the signaling message received by the receiving unit, and distribute the received signaling message to the acquired The processing entity identifier carried in the call reference value corresponds to the processing entity.

The signaling message generating means is used to generate a signaling message, and the signaling message includes a call reference value carrying the processing entity identifiers of the processing entities participating in this call.

According to the present invention, by making the call reference CR unit of the QSIG message packet have a processing entity identifier, the switch can directly distribute the QSIG message according to the returned signaling message, thereby greatly shortening the query matching time and improving the processing performance of the system , thus further improving the real-time performance of the protocol.

Description of drawings

Figure 1 shows a networking diagram using the QSIG protocol;

Figure 2 shows a hierarchical diagram of the QSIG protocol;

FIG. 3 shows a schematic diagram of basic call message interaction using the QSIG protocol;

Figure 4 shows the QSIG protocol message format;

Fig. 5 shows a schematic diagram of distribution of QSIG messages.

Detailed ways

In order to make it easier for those skilled in the art to understand and realize the present invention, the embodiments of the present invention are described in conjunction with the accompanying drawings.

As shown in Figure 4, the message format in the QSIG protocol includes four parts: 1) protocol identifier; 2) call reference; 3) message type; 4) multiple message information units. Therefore, each message format includes a mandatory unit and an optional unit. The mandatory unit is a unit that must be carried in a signaling message, and includes "protocol identifier", "call reference" and "message type". The optional unit is that the signaling message may or may not contain the message, and it includes a plurality of message information units. According to the present invention, the processing entity identifier corresponding to the call reference can be set in these mandatory units, for example, the corresponding processing entity identifier is set in the call reference. In this way, when PINX receives the signaling message with the call reference and the processing entity ID, it can directly assign the signaling message to the processing entity corresponding to the processing entity ID for processing according to the processing entity ID, thus saving Operations such as judgment and query are simplified, thereby shortening the signaling interaction time and improving communication quality.

According to the present invention, as shown in Figure 1, because on the signaling path between PINX X and PINX Y, in the signaling message that PINX Y receives to initiate a call from PINX X, the described signaling message is made by calling Generated by the call-out terminal PINX X, the signaling message includes the processing entity identifier. In this way, after the call is set up and before the call is cleared, all messages related to this call that are sent to the outgoing terminal PINXX via the incoming terminal PINX Y have the processing entity identification of PINX, so that PINX can pass the processing entity identification It is clear that the message is sent to the processing entity corresponding to the processing entity identifier for processing. Similarly, the call-in terminal PINX Y can also have the same treatment as above.

As shown in Figure 5, it is assumed that there are three QSIG call service processing entities (the processing entity identifiers are 01, 02, and 03) at the outgoing QSIG call terminal PINX X, and the outgoing terminal PINX X and the incoming terminal PINX Y pass the underlying QSIG signaling Access (inter-PINX link) connection. The signaling message distribution method of the present invention is described below.

1. When the processing entity 1 of the outgoing terminal PINX X needs to establish a QSIG call with the incoming terminal PINX Y, the outgoing terminal PINX X sets the processing entity carrying this QSIG call in the call reference CR value according to the number of the processing entity For the identification, for example, the lowest byte of the CR value is used to save the call processing entity identification 01, assuming that the CR is set to 0x1101. Once the CR value is allocated and confirmed, all calls received from the incoming terminal PINX Y on the signaling path specified by the lower layer of PINX X after the call starts and before it is cleared refer to QSIG with a CR unit value of 0x1101 Protocol messages are distributed to the corresponding QSIG processing entity 01 for processing.

2. When the processing entities 2 and 3 of the outgoing terminal PINX X need to establish a QSIG call with the incoming terminal PINX Y respectively, the outgoing terminal PINX X can set the minimum call reference CR value according to the QSIG processing entity numbers 02 and 03 The bytes are 02 and 03, assuming that the CR value is set to 0x2202 and 0x3303 respectively. Once the CR value is assigned and confirmed, all calls received from the incoming terminal PINX Y on the signaling channel designated by the lower layer after the call is established and before it is cleared refer to QSIG with CR value fields of 0x2202 and 0x3303 The protocol messages are respectively distributed to corresponding QSIG processing entities 2 and 3 for processing.

In addition, for specific services, for example, the call reference CR value of some QSIG service messages must be 0. If such QSIG messages are processed, the message distribution can be carried out according to the information carried by the specific service, or the message strategy can be implemented by fixed distribution and other strategies Distribution will not have any impact on existing business implementation.

The present invention also discloses a signaling distribution device. The signaling distribution device includes: a receiving unit for receiving signaling messages; a distribution unit connected with the receiving unit for The message obtains the processing entity identifier, and distributes the signaling message to the processing entity corresponding to the processing entity identifier; the processing entity is used for processing the signaling message.

The present invention also provides a switch, including: a signaling message distributing device for distributing signaling messages; a signaling message generating device for generating signaling messages, and the signaling messages include information corresponding to the call instance Handle entity id. The signaling distribution device includes: a receiving unit, used to receive signaling messages; a distribution unit, connected to the receiving unit, used to obtain the processing entity identifier according to the signaling messages received by the receiving unit, and distribute the signaling messages to A processing entity corresponding to the processing entity identifier; the processing entity is used for processing signaling messages.

In addition, only the QSIG protocol above describes the present invention, and the present invention is also applicable to switching devices in a general sense.

According to the present invention, by making the call reference CR unit in the QSIG message packet carry the processing entity identifier, the switch can directly distribute the returned signaling message to the QSIG message, thereby greatly shortening the query matching time and improving the processing performance of the system , which further improves the real-time performance of the protocol.

Although the present invention has been described by the embodiments, those of ordinary skill in the art know that, without departing from the spirit and essence of the present invention, the present invention can have many modifications and variations, and the scope of the present invention is defined by the appended rights Requirements to limit.

Claims (8)

1. A method for signaling message distribution, comprising: The call-out end switch generates a signaling message, and sends the generated signaling message to the call-in end switch, wherein the generated signaling message includes a call reference value carrying the processing entity identifier of the processing entity participating in this call; The call-out switch receives the signaling message sent via the call-in switch, obtains the call reference value included in the received signaling message, and distributes the received signaling message to the call reference value carried in the obtained call reference value. The processing entity identifies the corresponding processing entity. 2. The method for distributing a signaling message according to claim 1, wherein the signaling message includes mandatory elements and optional elements. 3. The method for distributing signaling messages according to claim 2, wherein the processing entity identifier is set in a mandatory element of the signaling message. 4 . The method for distributing signaling messages according to claim 2 , wherein the mandatory units include: a signaling identifier unit, a call reference unit, and a message type unit. 5. The method for distributing signaling messages according to claim 4, wherein the processing entity identifier is set in a call reference unit. 6. The method for distributing signaling messages according to claim 1, wherein the signaling message received by the call-out switch is associated with the signaling message sent by the call-out switch to the call-in switch . 7. A signaling message distribution device, characterized in that it comprises: The receiving unit is configured to receive a signaling message sent via the call-in terminal switch, the signaling message includes a call reference value carrying the processing entity identifier of the processing entity participating in this call; A distributing unit, connected to the receiving unit, configured to acquire the call reference value included in the received signaling message according to the signaling message received by the receiving unit, and distribute the received signaling message to the acquired The processing entity identifier carried in the call reference value corresponds to the processing entity. 8. A switch, characterized in that, comprising: A signaling message distribution device, configured to distribute signaling messages, the signaling message distribution device comprising: The receiving unit is configured to receive a signaling message sent via the call-in terminal switch, the signaling message includes a call reference value carrying the processing entity identifier of the processing entity participating in this call; A distributing unit, connected to the receiving unit, configured to acquire the call reference value included in the received signaling message according to the signaling message received by the receiving unit, and distribute the received signaling message to the acquired The processing entity corresponding to the processing entity identifier carried in the call reference value; The signaling message generating means is used to generate a signaling message, and the signaling message includes a call reference value carrying the processing entity identifiers of the processing entities participating in this call. the

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