CN103997787A - Internal and external signaling interface protocol flow associating method and system - Google Patents

Abstract

The present invention provides a method and system for associating internal and external signaling interface protocol processes, including: collecting signaling data from each interface of a media gateway device, and distributing it according to the protocol type; sending the media gateway control protocol to the media gateway control protocol for processing The module extracts the terminal identification and converts it into the transmission identification BindingID information of the RANAP protocol; sends the RANAP protocol to the RANAP protocol processing module to extract the BingdingID of the RANAP protocol; sends the Nb interface protocol to the Nb interface protocol processing module to extract the source address and destination address , source port, and destination port; the media gateway association analysis module performs multi-interface association according to the source address, destination address, source port, destination port and BingdingID. Compared with the prior art, the present invention can associate the internal and external signaling interface protocols of the media gateway equipment accurately and efficiently.

Description

Method and system for associating internal and external signaling interface protocol processes

technical field

The invention relates to the technical field of mobile communication, in particular to a method and system for associating internal and external signaling interface protocol flow.

Background technique

At present, in the associated mobile communication network for the internal and external signaling interface protocols of the media gateway, the media gateway is connected to the softswitch office, RNC (Radio Network Controller) and other media gateways, and the user's business will be in these interfaces at the same time. Pass the message. The Nb interface between media gateways transmits voice information, and other interfaces transmit signaling information. In order to be able to analyze user behavior, it is necessary to collect user service signaling through monitoring, and then carry out association synthesis of service behavior. Since the user's business behavior information cannot be obtained on one interface, it is necessary to associate the signaling of the Nb interface with other interfaces, so as to obtain information such as the caller and called party, connection event, location, ATM/IP channel, etc., that is, to realize the media gateway Association of internal and external signaling interface protocols.

The association of the existing internal and external signaling interface protocol processes must rely on the inter-office agreement association of the softswitch equipment. When associating, you can only rely on the time of the user number, consider the calls of the same calling party and called party within the same time as the same call, and combine their information to realize the association.

In the process of realizing the present invention, the inventor found that in the existing association scheme, the association must rely on the inter-office protocol of the soft switch, and this interface is generally not in the same physical location as the media gateway, and needs to be acquired in another place. It is very inconvenient; in addition, when transferring roaming numbers between offices, only one number is available, and the accuracy of association cannot be guaranteed when encountering enterprise users such as 10086 or the same user making multiple calls.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a method and system for associating internal and external signaling interface protocol processes.

A method for associating internal and external signaling interface protocol processes, the method comprising:

Collect signaling data from each interface of the media gateway device;

Analyzing the collected signaling data, and distributing according to the protocol type; the protocol type includes media gateway control protocol, radio access network application part RANAP protocol and Nb interface protocol;

The media gateway control protocol is sent to the media gateway control protocol processing module, the terminal identification is extracted and converted into the transmission identification BindingID information of the RANAP protocol, and submitted to the media gateway association analysis module;

The RANAP protocol is sent to the RANAP protocol processing module, the BingdingID of the RANAP protocol is extracted, and submitted to the media gateway association analysis module;

Send the Nb interface protocol to the Nb interface protocol processing module, extract source address, destination address, source port, destination port, and submit to the media gateway association analysis module;

The media gateway association analysis module performs multi-interface association according to source address, destination address, source port, destination port and BingdingID.

The media gateway control protocol processing module also extracts source address, destination address, source port and destination port.

After the RANAP protocol processing module extracts the BingdingID of the RANAP protocol, it also fills in the user number, LAC, CI, VPI, VCI, SS7 address, call loss, ringing time, call time and call duration information for the BingdingID.

The Nb interface protocol processing module also extracts RTP packet loss, jitter, time delay and MOS information.

The method also includes:

For the IuCS interface carried by IP, the media gateway control protocol processing module extracts the destination port and converts it into the transmission identification BindingID information of the RANAP protocol, and submits it to the media gateway association analysis module.

The matching management method of associating the destination port with the BingdingID of the RANAP protocol and performing matching according to the byte shift calculates the matching of the destination port and the BingdingID at the byte level.

An internal and external signaling interface protocol flow association system, the system includes an acquisition module, a decoding module, a media gateway control protocol processing module, a RANAP protocol processing module, an Nb interface protocol processing module, and a media gateway association analysis module, wherein,

The collection module is used to collect signaling data from each interface of the media gateway device;

The decoding module is used to analyze the collected signaling data and distribute it according to the protocol type; the protocol type includes Media Gateway Control Protocol, Radio Access Network Application Part RANAP protocol and Nb interface protocol;

The media gateway control protocol processing module is used to extract the terminal identifier from the media gateway control protocol and convert it into the transmission identifier BindingID information of the RANAP protocol, and submit it to the media gateway association analysis module;

The RANAP protocol processing module is used to extract the BingdingID of the RANAP protocol from the RANAP protocol, and submit it to the media gateway association analysis module;

The Nb interface protocol processing module is used to extract the source address, destination address, source port, and destination port from the Nb interface protocol, and submit them to the media gateway association analysis module;

The media gateway association analysis module performs multi-interface association according to source address, destination address, source port, destination port and BingdingID.

The media gateway control protocol processing module is also used to extract source address, destination address, source port and destination port.

After described RANAP protocol processing module is also used for extracting the BingdingID of RANAP agreement, also fill in user number, LAC, CI, VPI, VCI, SS7 address (OPC), call loss, ringing time, talk time and talking time to described BingdingID Duration information.

The Nb interface protocol processing module is also used to extract RTP packet loss, jitter, delay and MOS information.

The media gateway control protocol processing module is also used to extract the destination port and convert it into the transmission identification BindingID information of the RANAP protocol, and submit it to the media gateway association analysis module.

The present invention designs an allocation algorithm of circuit resources in the context management of the media gateway by using the characteristics of resource allocation of the media gateway in the existing network, and directly implements the RTP protocol of the Nb port and the RANAP (Radio Access Network Application Part, wireless access network) of the IuCS port. Incoming network application part) protocol for association. Compared with the prior art, it can associate the internal and external signaling interface protocols of the media gateway equipment accurately and efficiently without resorting to the inter-office protocol of the soft switch.

Description of drawings

Fig. 1 is a principle flowchart of the internal and external signaling interface protocol flow association method provided by Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of an internal and external signaling interface protocol flow correlation system provided by Embodiment 2 of the present invention.

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited thereto.

The embodiment of the method of the present invention uses the characteristics of resource allocation of the media gateway in the existing network to design an allocation algorithm of circuit resources in the context management of the media gateway, and directly associates the RTP protocol of the Nb port with the RANAP protocol of the IuCS port; Accurately and efficiently correlate the internal and external signaling interface protocols of the media gateway equipment.

As shown in Fig. 1, it is a schematic flow chart of the internal and external signaling interface protocol process association method provided by Embodiment 1 of the present invention, specifically as follows:

Step 10, collect signaling data from each interface of the media gateway device.

Data collection is done by specific collection equipment. In order to correlate the internal and external signaling interface protocols of the network, it is necessary to collect the signaling data of each internal and external interface.

Step 20, analyzing the collected signaling data, and distributing according to the protocol type.

Here, the process of analyzing and distributing can be completed by specific decoding software. Roughly speaking, the protocol types include media gateway control protocol, radio access network application part RANAP protocol and Nb interface protocol.

In fact, the protocol stack of TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) has many layers. For ATM (Asynchronous Transfer Mode, asynchronous transfer mode), the protocol stack is AAL5, SSCOP, SSCF-NNI, MTP-3B, SCCP, and RANAP protocols in sequence. For the IP mode, the protocol stack is followed by IP, SCTP, M3UA, SCCP, and RANAP protocols.

In the RANAP protocol, the Binding ID is an important parameter, which plays an important role in the association of 3G signaling; due to the multi-layer characteristics of the 3G protocol, the protocols of different layers are encapsulated independently, and the underlying protocol has multiple fragments. There are multiple complete or incomplete data packets in the existing data packets, so it is necessary to cache, unpack, assemble, and assemble the captured data, and finally restore the RANAP data packets. For the ATM bearer mode, the processing of fragmentation and grouping shall be performed at the AAL5, SCCOP, and MTP-3B layers; for the IP bearer mode, the processing of fragment assembly shall be performed at the SCTP and M3UA layers.

In particular, the RANAP protocol is the PER encoding method of ASN.1, and there are a large number of optional, mandatory, array, enumeration, Sequence and other fields in the protocol. The Binding ID is very deep in the RANAP protocol, and it is very difficult to extract. The Binding ID is in the RAB-Assigment message, the parameters include RAB-AssigmentRequest, which is an array structure, including the parameters of RAB-SetupOrModifyList, and this parameter also contains the parameters of an array structure RAB-SetupOrModifyItem, which is determined by id , firstCriticality, firstValue, secondCriticality, secondValue and other parameters. These parameters are optional and required, and the Binding ID is in firstValue or secondValue. firstValue包括RAB-SetupOrModifyItemFirst、secondValue包括RAB-SetupOrModifyItemSecond，RAB-SetupOrModifyItemFirst里有RAB-ID、NAS-SynchronisationIndicator、RAB-Parameters、UserPlaneInformation、transportLayerInformation等参数，transportLayerInformation包括transportLayerAddress、IuTransportAssociation参数，IuTransportAssociation包括Binding ID，对Binding ID The extraction needs to analyze the data according to the protocol specification, and in the case of different bearer and parameter options, the corresponding encapsulation and level-by-level analysis can be performed to extract correctly.

Step 30, send the media gateway control protocol to the media gateway control protocol processing module, extract the terminal identifier and convert it into the transmission identifier BindingID information of the RANAP protocol, and submit it to the media gateway association analysis module.

Here, the decoding software sends the media gateway control protocol to the media gateway control protocol processing module to perform user service composition analysis; the media gateway control protocol analysis module analyzes the media gateway control protocol, including the RTP signaling information of this call, i.e. the source address ( source address), destination address, source port, destination port, and the terminal ID of the call. Relying on the analysis of the media gateway control protocol, it is impossible to directly realize the association between the information analyzed by the Nb analysis module and the information in the IuCS interface. It is necessary to use the allocation algorithm of the terminal identifier in the media gateway context management to accurately associate the IuCS information and the Nb information. associated.

Further, it is necessary to convert the obtained terminal identifier into BindingID information of the RANAP protocol, and submit it to the media gateway association analysis module. Here, the IuCS interface carried by ATM is taken as an example. In the case of the IuCS interface carried by IP, it is necessary to convert the obtained destination port into the BindingID information of the RANAP protocol and submit it to the media gateway association analysis module.

Step 40, send the RANAP protocol to the RANAP protocol processing module, extract the BingdingID of the RANAP protocol, and submit it to the media gateway association analysis module.

The RANAP protocol processing module extracts the BingdingID of the RANAP protocol, and fills in information such as number, LAC, CI, VPI, VCI, SS7 address (OPC), call loss, ringing time, call time, and call duration, and submits user service records to Media gateway association analysis module.

In fact, by analyzing RANAP signaling, the RANAP analysis module can obtain user voice service number, VPI, VCI, LAC, CI, SS7 address (OPC), call loss, ringing time, call time, call duration and other information. At present, the information analyzed by the RTP analysis module cannot be associated with the information in the RANAP protocol to form a complete user service record. Therefore, the media gateway control protocol analysis module in step 30 is introduced to perform Nb interface and IuCS through the media gateway control protocol. Interface association.

Step 50, send the Nb interface protocol to the Nb interface protocol processing module, extract the source address, destination address, source port, and destination port, and submit them to the media gateway association analysis module.

The Nb interface protocol processing module extracts the source address, destination address, source port, and destination port, and also advances information such as RTP packet loss, jitter, delay, and MOS, and submits user service records to the media gateway correlation analysis module.

In fact, the Nb analysis module can obtain the source address (source address), destination address (destination address), source port (source port), and destination port (destination port) of the RTP signaling of the user voice service by analyzing the RTP signaling , including RTP packet loss, jitter, delay, MOS and other information.

In fact, the schemes in the above steps 30 to 50 are carried out at the same time. According to the result of the agreement distribution, each of them needs to be responsible for the complete content conversion, and there is no difference in the order of execution.

Step 60, the media gateway association analysis module performs multi-interface association according to the source address, destination address, source port, destination port and BingdingID.

After the media gateway association analysis module receives the media gateway control service record, the RANAP protocol service record, and the Nb interface service record, it performs multi-interface association according to the source address, destination address, source port, destination port, IuCS interface address, and circuit. Keep good records, advance corresponding business information, and realize correlation analysis.

For the IuCS interface carried by the ATM mode, the terminal identification (Terminal ID) of the media gateway control protocol is associated with the Binding ID of the RANAP protocol; a corresponding table of Terminal ID and RANAP protocol Binding ID is established inside the module, and the corresponding table algorithm is Use Terminal ID modulo 0xFFFFFF, and then associate with the Binding ID of the RANAP protocol, so that the association of the internal and external signaling interface protocol processes of the media gateway device can be accurately realized.

For the IuCS interface carried by IP mode, the Termination in the media gateway control protocol is associated with the Binding ID of the RANAP protocol; a corresponding table of Termination and RANAP protocol Binding ID is established inside the module, and the corresponding table algorithm is used in the RNC side Termination The media port number is associated with the Binding ID of the RANAP protocol, so that the association of the internal and external signaling interface protocol processes of the media gateway device can be accurately realized.

As shown in Figure 2, it is a schematic structural diagram of the internal and external signaling interface protocol flow correlation system provided by Embodiment 2 of the present invention, the system includes a collection module 100, a decoding module 200, a media gateway control protocol processing module 300, and a RANAP protocol processing module 400 , Nb interface protocol processing module 500 and media gateway association analysis module 600, specifically as follows:

The collection module 100 is configured to collect signaling data from each interface of the media gateway device.

The decoding module 200 is configured to analyze the collected signaling data and distribute it according to the protocol type.

Protocol types include media gateway control protocol, radio access network application part RANAP protocol and Nb interface protocol.

The media gateway control protocol processing module 300 is configured to extract the terminal identifier from the media gateway control protocol and convert it into the transmission identifier BindingID information of the RANAP protocol, and submit it to the media gateway association analysis module 600 .

The RANAP protocol processing module 400 is configured to extract the BingdingID of the RANAP protocol from the RANAP protocol and submit it to the media gateway association analysis module 600 .

The Nb interface protocol processing module 500 is used to extract the source address, destination address, source port, and destination port from the Nb interface protocol, and submit them to the media gateway association analysis module 600 .

The media gateway association analysis module 600 performs multi-interface association according to source address, destination address, source port, destination port and BingdingID.

Further, the media gateway control protocol processing module 300 is also used to extract the source address, destination address, source port and destination port.

Further, after the RANAP protocol processing module 400 is also used to extract the BingdingID of the RANAP protocol, it also fills in the user number, LAC, CI, VPI, VCI, SS7 address (OPC), call loss, ringing time, call time and call time for the BingdingID. Duration information.

Further, the Nb interface protocol processing module 500 is also used to extract RTP packet loss, jitter, delay and MOS information.

Further, the media gateway control protocol processing module 300 is also configured to extract the destination port and convert it into the transmission identification BindingID information of the RANAP protocol, and submit it to the media gateway association analysis module 600 .

To sum up, in the above-mentioned embodiments, the present invention performs the protocol association of the Nb and IuCS interfaces through the media gateway control protocol, without collecting the signaling of the Nc interface, the signaling association is accurate, and the collection is simple.

The terminal ID (Terminal ID) of the media gateway control protocol is associated with the BingdingID of the RANAP protocol. In order to improve the association efficiency, the matching management method of the byte shift can be used to calculate the matching of the Terminal ID and the BingdingID to the byte level. Improve association efficiency.

For the Iu interface carried by ATM, the allocation algorithm of the terminal ID in the media gateway context management, the media gateway control protocol cannot be directly associated with the RANAP protocol, and needs to be associated by matching the terminal ID with the BingdingID of the RANAP protocol.

For the Iu interface carried by IP, the allocation algorithm of the destination port in the media gateway context management, the media gateway control protocol cannot be directly associated with the RANAP protocol, and the destination port needs to be associated with the BingdingID of the RANAP protocol.

The destination port of the media gateway control protocol is associated with the BingdingID of the RANAP protocol. In order to improve the association efficiency, the matching management method of byte shift can be used to calculate the matching of the destination port and the BingdingID at the byte level to improve the association efficiency.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (11)

1. A method for associating an internal and external signaling interface protocol flow, characterized in that the method comprises: Collect signaling data from each interface of the media gateway device; Analyzing the collected signaling data, and distributing according to the protocol type; the protocol type includes media gateway control protocol, radio access network application part RANAP protocol and Nb interface protocol; The media gateway control protocol is sent to the media gateway control protocol processing module, the terminal identification is extracted and converted into the transmission identification BindingID information of the RANAP protocol, and submitted to the media gateway association analysis module; The RANAP protocol is sent to the RANAP protocol processing module, the BingdingID of the RANAP protocol is extracted, and submitted to the media gateway association analysis module; Send the Nb interface protocol to the Nb interface protocol processing module, extract source address, destination address, source port, destination port, and submit to the media gateway association analysis module; The media gateway association analysis module performs multi-interface association according to source address, destination address, source port, destination port and BingdingID. 2. The method according to claim 1, wherein the media gateway control protocol processing module further extracts source address, destination address, source port and destination port. 3. The method according to claim 1, wherein, after the BingdingID of the RANAP protocol is extracted by the RANAP protocol processing module, the BingdingID is also filled with user number, LAC, CI, VPI, VCI, SS7 address, call loss , ring time, call time, and call duration information. 4. The method according to claim 1, wherein the Nb interface protocol processing module also extracts packet loss, jitter, time delay and MOS information of RTP. 5. The method of claim 1, further comprising: For the IuCS interface carried by IP, the media gateway control protocol processing module extracts the destination port and converts it into the transmission identification BindingID information of the RANAP protocol, and submits it to the media gateway association analysis module. 6. The method according to claim 1, wherein, the BingdingID of the destination port and the RANAP protocol is associated, and the matching management mode is carried out according to the byte shift, and the matching of the destination port and the BingdingID is calculated into bytes level. 7. An internal and external signaling interface protocol flow association system, characterized in that the system includes a collection module, a decoding module, a media gateway control protocol processing module, a RANAP protocol processing module, an Nb interface protocol processing module and a media gateway association analysis module, where The collection module is used to collect signaling data from each interface of the media gateway device; The decoding module is used to analyze the collected signaling data and distribute it according to the protocol type; the protocol type includes Media Gateway Control Protocol, Radio Access Network Application Part RANAP protocol and Nb interface protocol; The media gateway control protocol processing module is used to extract the terminal identification from the media gateway control protocol and convert it into the transmission identification BindingID information of the RANAP protocol, and submit it to the media gateway association analysis module; The RANAP protocol processing module is used to extract the BingdingID of the RANAP protocol from the RANAP protocol, and submit it to the media gateway association analysis module; The Nb interface protocol processing module is used to extract the source address, destination address, source port, and destination port from the Nb interface protocol, and submit them to the media gateway association analysis module; The media gateway association analysis module performs multi-interface association according to source address, destination address, source port, destination port and BingdingID. 8. The system according to claim 7, wherein the media gateway control protocol processing module is further used to extract source address, destination address, source port and destination port. 9. system as claimed in claim 7, it is characterized in that, after described RANAP protocol processing module is also used for extracting the BingdingID of RANAP agreement, also fill in user number, LAC, CI, VPI, VCI, SS7 address to described BingdingID , call loss, ringing time, talk time and call duration information. 10. The system according to claim 7, wherein the Nb interface protocol processing module is also used to extract packet loss, jitter, time delay and MOS information of RTP. 11. The system according to claim 7, wherein the media gateway control protocol processing module is further configured to extract the destination port and convert it into the transmission identification BindingID information of the RANAP protocol, and submit it to the media gateway association analysis module.