CN103368899B - A kind of method, system and access gateway determining non-IP fixed terminal position - Google Patents

Abstract

The invention discloses a method for determining the location of a non-IP fixed terminal, including: A. The access gateway receives a request initiated by a non-IP fixed terminal mounted on the gateway, and forms a terminal carrying the access gateway according to the request. A request message for an IP address; B. Transfer the request message to the network-side device, and the network-side device determines the physical location of the non-IP fixed terminal according to the request message. Wherein, the present invention can obtain the corresponding physical location information according to the IP address information of the access gateway carried in the call request or the IP address information, and the subscriber line port number, and determine the physical location of the non-IP fixed terminal based on the above information. In addition, a system for determining the physical location of a non-IP fixed terminal and an access gateway are also disclosed.

Description

A method, system and access gateway for determining the location of a non-IP fixed terminal

technical field

The invention relates to a method and system for determining the physical location of a user terminal, belonging to the field of IP multimedia subsystem communication.

Background technique

IMS (IP Multimedia Subsystem, IP Multimedia Subsystem), proposed by 3GPP in Release 5, is a new telecom network architecture based on an all-IP network and a product of the integration of telecom networks and the Internet. IMS has the characteristics of access independence and end-to-end all-IP, and is an open core network architecture.

Among them, during the IMS communication process, some services require to know the physical location of the user terminal. For example, in the emergency call service, no matter where the user is, the fire alarm number dialed is 119, but it is impossible to hand over all alarms to a fire alarm center, because this puts too much pressure on equipment and personnel, and does not meet the requirements of rapid The needs of the police.

In fact, the core network equipment (E-CSCF) needs to know the current physical location of the user, and convert 119 into the real number of the fire alarm center closest to the user, so as to transfer the alarm call to the nearest fire alarm center.

Because IMS has the characteristics of end-to-end all-IP, in the 3GPP standard, the physical location of the user terminal is obtained according to the IP query of the user terminal. Generally, the core network equipment maintains the correspondence table between the user terminal IP and the physical location. User, just add a record in the corresponding table. The physical location of the user terminal in the correspondence table is generally not accurate to the level of latitude and longitude, but usually a physical range, which only needs to meet business needs.

Among them, according to the requirements of the 3GPP standard, when the user terminal initiates a call, it must fill in its own IP address in the SIP protocol message. The core network equipment receives the SIP message carrying the user terminal IP, and queries the above corresponding table to know the user terminal IP address. physical location.

However, because the IMS has access-independent characteristics, user terminals that do not support IP, such as traditional telephones, also have the possibility and demand to access the IMS. Non-IP fixed terminals do not have IP, so the core network equipment cannot know their physical addresses through the above method, and services such as emergency calls must know the physical location of the terminal, which creates a contradiction.

Since non-IP fixed terminals do not meet the end-to-end all-IP requirements of IMS, they cannot directly access IMS, but are attached to access devices (access gateways), and the access devices replace terminals to generate IMS requirements. SIP protocol message transmitted by IP.

However, the capacity and deployment locations of access devices vary greatly. For access devices deployed in users' homes or offices, their physical locations are consistent with those of user terminals and can be regarded as a whole. SIP protocol messages carry access The IP of the device, the core network device finds the physical location of the access device through the IP of the access device, which is equivalent to the physical location of the user terminal, and has no impact on services such as emergency calls. However, for access devices that are deployed close to the core network, or whose physical coverage exceeds the acceptable accuracy of the service, the SIP protocol message only carries the IP of the access device, which will affect the normal development of the service.

Contents of the invention

Aiming at the defects in the prior art, the present invention provides a method for determining the physical location of a non-IP fixed terminal, which can obtain a relatively accurate physical location of the non-IP fixed terminal. In addition, the invention also provides a system and an access gateway.

Among them, according to the first purpose of the present invention, the present invention provides a method for determining the physical location of a non-IP fixed terminal, including:

A. The access gateway receives a request initiated by a non-IP fixed terminal mounted on the gateway, and forms a request message carrying the IP address of the access gateway according to the request;

B. Transmitting the request message to the network side device, and the network side device determines the physical location of the non-IP fixed terminal according to the request message.

Wherein, preferred method is, in step A, also includes:

The request message also carries the subscriber line port number of the non-IP fixed terminal under the access gateway.

Wherein, the preferred method is that the access gateway is the access gateway closest to the network side, and in step B, the request message is transmitted to the network side device, specifically including:

The access gateway transmits the request message to the network side device in SIP format.

Wherein, the preferred method is, in step B, passing the request message to the network side device, including:

The access gateway passes the request message layer to one or more upper layer access gateways in a non-SIP format;

Among them, when reaching the upper layer access gateway closest to the network side,

The upper layer access gateway performs protocol conversion on the request message, and transmits the request message to the network side device in SIP format.

Wherein, the preferred method is, in step B, determining the physical location of the non-IP fixed terminal according to the request message, specifically including:

Querying pre-stored location correspondence information according to the IP address of the access gateway;

The physical location of the corresponding access gateway is obtained according to the matching relationship of the IP address, and the physical location is used as the approximate physical location of the non-IP fixed terminal.

Wherein, the preferred method is, in step B, determining the physical location of the non-IP fixed terminal according to the request message, specifically including:

Querying pre-stored location correspondence information according to the IP address of the access gateway and the subscriber line port number of the terminal;

determining a corresponding access gateway according to the IP address;

The accurate physical location of the non-IP fixed terminal under the access gateway is obtained according to the subscriber line port number.

Wherein, after adopting the above scheme, the present invention can support the network side equipment to query the physical location of the non-IP fixed terminal, and can estimate the physical location of the user terminal through the physical location of the access gateway closest to the non-IP fixed terminal, Or the physical location of the non-IP fixed terminal can be further accurately queried through the subscriber line port number, so as to perform subsequent calls or services, which has a better effect.

Wherein, according to another object of the present invention, the present invention provides a system for determining the physical location of a non-IP fixed terminal, including:

Access gateways, including:

A message receiving unit, configured to receive a request initiated by a non-IP fixed terminal mounted on the gateway;

A request message generating unit, configured to form a request message carrying the IP address of the access gateway according to the request;

a message sending unit, configured to transfer the request message to the network side device directly or through one or more upper layer access gateways;

The network side device is configured to determine the physical location of the non-IP fixed terminal according to the request message.

Wherein, preferably, the network side equipment includes:

The address information acquisition unit is used to receive and store the IP address information of the access gateway and the physical location information of the access gateway;

an address storage unit, configured to store the IP address information of the access gateway, the physical location information of the access gateway and their association;

A message receiving unit, configured to receive the above-mentioned request message carrying IP address information;

An address query unit, configured to query and acquire the physical location of the access gateway in the address storage unit according to the IP address information.

Wherein, preferably, the access gateway also includes:

A port number obtaining unit, configured to obtain the subscriber line port number of the non-IP fixed terminal under the access gateway;

The request message generating unit is further configured to add the subscriber line port into the request message.

Wherein, preferably, the address information acquisition unit is also used to receive and store the subscriber line port number information and physical location information of the non-IP fixed terminal under the access gateway;

The address storage unit is also used to store the IP address information of the access gateway, the subscriber line port number information, the physical location information of the non-IP fixed terminal and their associations;

The message receiving unit is configured to receive the above-mentioned request message carrying IP address information and subscriber line port number information;

The address query unit is further configured to query and obtain the physical location of the access gateway in the address storage unit according to the IP address information and the subscriber line port number information.

Wherein, the system can query the physical location of the non-IP fixed terminal that initiates the call, and estimate the physical location of the user terminal through the IP address information of the access gateway closest to the non-IP fixed terminal, or, through the user line port number The physical location of the non-IP fixed terminal is further accurately determined, thereby overcoming the disadvantage that the prior art cannot obtain the location of the non-IP fixed terminal.

According to another object of the present invention, the present invention also provides an access gateway, including:

A message receiving unit, configured to receive a request initiated by a non-IP fixed terminal mounted on the gateway;

a request message generating unit, configured to generate a request message to the network side according to the request, where the request carries the IP address information of the access gateway;

A message sending unit, configured to transmit the request message to a network side device or an upper layer access gateway.

Wherein, it also includes: a port number obtaining unit, which is used to obtain the subscriber line port number of the non-IP fixed terminal under the gateway;

The request message generating unit is further configured to add the subscriber line port number of the non-IP fixed terminal under the gateway to the request message.

Wherein, the message receiving unit is further configured to receive a request message from a lower-layer access gateway; the message forwarding unit is also configured to forward the request message to a network-side device or an upper-layer access gateway.

Among them, also include:

a protocol conversion unit, configured to perform protocol conversion on the request message generated by the request message generating unit or received by the message receiving unit; the message sending unit, configured to transfer the protocol-converted request message to Network-side device or upper-layer access gateway.

After the above solution is adopted in the present invention, the access gateway can generate a call request to the network side or the upper layer access gateway based on the call initiated by the non-IP fixed terminal mounted on it, and the access gateway can also call The request of the access gateway of the next layer is converted and forwarded by protocol.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The present invention will be described in detail below in conjunction with the accompanying drawings, so as to make the above-mentioned advantages of the present invention clearer.

Fig. 1 is a schematic flow chart of a method for determining the physical location of a non-IP fixed terminal in the present invention;

FIG. 2 is a schematic flowchart of a method for determining the physical location of a non-IP fixed terminal according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a method for determining the physical location of a non-IP fixed terminal according to an embodiment of the present invention;

4 is a schematic flowchart of a method for determining the physical location of a non-IP fixed terminal according to an embodiment of the present invention;

5 is a schematic flowchart of a method for determining the physical location of a non-IP fixed terminal according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of a system for determining the physical location of a non-IP fixed terminal according to the present invention;

FIG. 7 is a schematic structural diagram of an access gateway according to an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of a network side device according to an embodiment of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Method embodiment one:

Wherein, Fig. 1 is a schematic flow chart of a method for determining the physical location of a non-IP fixed terminal in the present invention; as shown in Fig. 1, the method includes the following steps:

S101: The access gateway receives a request initiated by a non-IP fixed terminal mounted under the access gateway, where the request may be a pulse or other forms.

Since the non-IP fixed terminal is directly mounted under the gateway, the access gateway, as the access gateway closest to the non-IP fixed terminal, is closer to the position of the non-IP fixed terminal, so , the location of the non-IP fixed terminal may be estimated based on the IP address information of the access gateway, therefore, the method includes:

S102: The access gateway forms a request message to the network side device (IMS core network in this embodiment) according to the request, where the request message carries the IP address information of the access gateway;

S103: Deliver the request message to the network side device;

S104: The network side device determines the physical location of the non-IP fixed terminal according to the request message, specifically including:

According to the IP address information of the access gateway, query a pre-stored IP address and physical location correspondence table and obtain the physical location of the access gateway, and use the physical location as an approximation of the non-IP fixed terminal physical location.

Wherein, since the above-mentioned location is not the actual location information of the terminal, for further precise query, the method in S102 may also include:

Adding the subscriber line port number of the non-IP fixed terminal under the access gateway into the request message.

Thus, step S104 specifically includes:

A pre-stored location correspondence table is queried according to the IP address information of the access gateway and the subscriber line port number to obtain a relatively accurate physical location of the non-IP fixed terminal.

Among them, it can be understood that the IP address of the access gateway and the corresponding physical location information or the IP address of the access gateway, the subscriber line port number of the user terminal under the access gateway and the corresponding physical location information can be stored in any manner In a location correspondence table, the location correspondence table can be put into an IMS core network device, or can be put into a third-party storage device, wherein, each time an access gateway or user terminal is opened, the corresponding IP address, subscriber line port number and physical location information are recorded and stored.

Wherein, after the present invention adopts the above scheme, the IP address information of the access gateway or the IP address information and the subscriber line port number carried in the call request generated by the access gateway according to the user request can obtain the corresponding physical location information, Based on the above information, the physical location of the non-IP fixed terminal is estimated or determined. Therefore, this method can overcome the defect that the IMS core network cannot know the physical location of the terminal when the non-IP fixed terminal initiates a call in the prior art.

Method embodiment two:

The above embodiments are described in more detail below in conjunction with specific embodiments, wherein FIG. 2 is a schematic flowchart of a method for determining the physical location of a non-IP fixed terminal according to an embodiment of the present invention;

As shown in Figure 2, in this embodiment, the method for determining a non-fixed IP terminal mainly includes the following steps:

S201: The IMS core network obtains the IP address of the access gateway and the corresponding physical location information;

S202: Store the IP address of the access gateway and the corresponding physical location information and its association relationship in a location correspondence table, wherein the correspondence table can be set in the network side device or placed in other third parties in the storage device.

S203: The non-IP fixed terminal initiates a request to the core network through the access gateway closest to the terminal;

The access gateway generates a request message to the IMS core network according to the request, and the request message includes the IP address information of the access gateway closest to the non-IP fixed terminal;

S204: The core network receives and queries the location correspondence table according to the IP address of the access gateway; wherein, when the corresponding matching IP address is obtained,

S205: Obtain the physical location of the access gateway according to the corresponding matching relationship, and use the physical location as the approximate physical location of the non-IP fixed terminal.

That is to say, in this embodiment of the present invention, the physical location of the access gateway is used as the physical location information of the non-fixed user terminal, so that the network equipment (for example, E-CSCF) in the core network can be based on This approximate physical location is followed by actions to meet various business needs.

Wherein, FIG. 3 is a schematic flowchart of a method for determining the physical location of a non-IP fixed terminal according to an embodiment of the present invention; as shown in FIG. 3 , the method includes the following steps:

S301: The non-IP fixed terminal initiates a request to the core network through the access gateway; wherein, in this embodiment, the access gateway is an access gateway connected to the core network;

S302: The access gateway adds its own IP address information and generates a request message to the network side;

S303: The access gateway transmits the request message to the IMS core network in a SIP protocol format;

S304: After receiving the call request, the device in the IMS core network obtains the corresponding physical location information according to the IP address information of the access gateway, and uses the physical location of the access gateway as the non-fixed user terminal physical location information.

Wherein, FIG. 4 is a schematic flowchart of a method for determining the physical location of a non-IP fixed terminal according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

S401: The non-IP fixed terminal initiates a call to the IMS core network through the access gateway, where the access gateway is recorded as the first access gateway;

S402: The first access gateway adds its own IP address information to generate a call request to the network side;

S403: The first access gateway transmits the call request to the upper-layer second access gateway in a message in a non-SIP format;

Wherein, S404: the second access gateway transmits the call request to the access gateway of the upper layer with a message in a non-SIP format, until reaching the access gateway closest to the core network;

Wherein, in this embodiment, the access gateway closest to the core network is a third access gateway that accesses the core network;

S405: The third access gateway transmits the call request to the core network in a SIP protocol format;

S406: The core network obtains the physical location information of the corresponding first access gateway according to the IP address information in the call request, and estimates the physical location information of the non-IP fixed user according to the physical location information.

Wherein, in the above-mentioned embodiment, the non-IP fixed terminal and the access gateway interact with each other through a non-SIP protocol, and between the access gateway and the core network through a SIP protocol format for information transfer.

Among them, according to the 3GPP standard, the IP address information of the user terminal needs to be written into the SIP protocol. Therefore, in order to transfer the IP address of the access gateway to the core network, it is necessary to enter the P-Access-Network of the SIP protocol. -Info header field, add a subfield of the access-info field: agw-ip, so that the core network can distinguish whether the call request it receives is the IP address of the access gateway or the IP address information of the fixed IP terminal.

After the present invention adopts the above scheme, it can overcome the defect that the core network cannot know its physical location when the non-IP fixed terminal initiates a call in the prior art, and estimates the non-IP fixed terminal based on the physical location closest to the access gateway among the non-IP fixed users. The physical location of the terminal can be applied to the emergency call service.

Method embodiment three:

Wherein, in the above-mentioned embodiment, the physical location of the user terminal acquired by the core network device is an approximate estimated physical location, which is not the exact physical location of the non-IP fixed terminal, therefore, in order to obtain a more accurate physical location , as shown in Figure 5, take the following steps:

S501: The core network device obtains the subscriber line port number of the non-IP fixed terminal under the access gateway, the physical location information of the terminal, the IP address of the access gateway, and the physical location information of the access gateway;

S502: Store the subscriber line port number of the non-IP fixed terminal, the terminal's physical location information, the access gateway's IP address, and the access gateway's physical location information in a physical location correspondence table.

S503: The core network receives a call request message;

Wherein, the call request includes the IP address information of the access gateway closest to the non-IP fixed terminal, and the subscriber line port number of the terminal under the access gateway.

S504: The core network queries the physical location correspondence table according to the IP address information of the access gateway and the subscriber line port number, and obtains accurate physical location range information of the non-IP fixed terminal according to the matching relationship.

Wherein, in order to realize the above technical solution, it is necessary to extend the P-Access-Network-Info header field of the SIP protocol defined by 3GPP, and add a subfield of the access-info field: userline-port.

Wherein, in the embodiment, the syntax of the extended P-Access-Network-Info header field is as follows:

P-Access-Network-Info="P-Access-Network-Info"HCOLON

access-net-spec*(COMMA access-net-spec)

access-net-spec=(access-type/access-class)*(SEMI access-info)

access-type="IEEE-802.11"/"IEEE-802.11a"/"IEEE-802.11b"/"IEEE-802.11g"/"IEEE-802.11n"/"3GPP-GERAN"/"3GPP-UTRAN-FDD ″/″3GPP-UTRAN-TDD″/″3GPP-E-UTRAN-FDD″/″3GPP-E-UTRAN-TDD″/″ADSL″/″ADSL2″/″ADSL2+″/″RADSL″/″SDSL″/ "HDSL"/"HDSL2"/"GSHDSL"/"VDSL"/"IDSL"/"3GPP2-1X"/"3GPP2-1X-HRPD"/"3GPP2-UMB"/"DOCSIS"/"IEEE-802.3"/ ″IEEE-802.3a″/″IEEE-802.3e″/″IEEE-802.3i″/″IEEE-802.3j″/″IEEE-802.3u″/″IEEE-802.3ab″/″IEEE-802.3ae″/″ IEEE-802.3ak″/″IEEE-802.3aq″/″IEEE-802.3an″/″IEEE-802.3y″/″IEEE-802.3z″/token

access-class="3GPP-GERAN"/"3GPP-UTRAN"/"3GPP-E-UTRAN"/"3GPP-WLAN"/"3GPP-GAN"/"3GPP-HSPA"/token

access-info=cgi-3gpp/utran-cell-id-3gpp/dsl-location/i-wlan-node-id/ci-3gpp2/eth-location/np/extension-access-info/agw-ip/userline- port

np="network-provided"

extension-access-info=gen-value

cgi-3gpp="cgi-3gpp" EQUAL(token/quoted-string)

utran-cell-id-3gpp="utran-cell-id-3gpp" EQUAL(token/quoted-string)

i-wlan-node-id="i-wlan-node-id" EQUAL(token/quoted-string)

dsl-location="dsl-location" EQUAL(token/quoted-string)

eth-location="eth-location" EQUAL(token/quoted-string)

ci-3gpp2="ci-3gpp2" EQUAL(token/quoted-string)

agw-ip="agw-ip" EQUAL(IPv4address/IPv6address)

userline-port="userline-port" EQUAL port

Example of the P-Access-Network-Info header field:

P-Access-Network-Info: ADSL; agw-ip=10.0.0.1; userline-port=5060

Among them, the present invention further accurately inquires the physical location of the non-IP fixed terminal through the subscriber line port number, thereby overcoming the defect that the core network cannot know its physical location when the non-IP fixed terminal initiates a call in the prior art. The data transmission mode of each gateway is applicable to the processes shown in FIG. 3 and FIG. 4 , and will not be described in detail here.

System embodiment one:

Wherein, Fig. 6 is a schematic diagram of the system for determining the physical location of non-IP fixed users according to the present invention; as shown in Fig. 6, the system for determining the physical location of non-IP fixed terminals includes:

Access gateways, including:

A message receiving unit, configured to receive a request initiated by a non-IP fixed terminal mounted on the gateway;

A request message generating unit, configured to form a request message carrying the IP address of the access gateway according to the request;

a message sending unit, configured to transfer the request message to the network side device directly or through one or more upper layer access gateways;

Wherein, the network side device is configured to determine the physical location of the non-IP fixed terminal according to the request message.

Wherein, FIG. 8 is a schematic structural diagram of a network side device according to an embodiment of the present invention;

More specifically, in order to enable the network side device to perform location query according to the request message initiated by the access gateway, the network side device includes:

The address information acquisition unit is used to receive and store the IP address information of the access gateway and the physical location information of the access gateway;

an address storage unit, configured to store the IP address information of the access gateway, the physical location information of the access gateway and their association;

A message receiving unit, configured to receive the above-mentioned request message carrying IP address information;

An address query unit, configured to query and acquire the physical location of the access gateway in the address storage unit according to the IP address information.

Wherein, the access gateway also includes:

The port number obtaining unit is used to obtain the subscriber line port number of the non-IP fixed terminal under the access gateway; the request message generation unit is also used to add the subscriber line port into the request message.

And, correspondingly, in the network side device, the address information obtaining unit is further configured to receive and store the IP address information of the access gateway, the subscriber line port number information and the physical location information of the non-IP fixed terminal;

The address storage unit is also used to store the IP address information of the access gateway, the subscriber line port number information, the physical location information of the non-IP fixed terminal and their associations;

The message receiving unit is configured to receive the above-mentioned request message carrying IP address information and subscriber line port number information;

The address query unit is further configured to query and obtain the physical location of the access gateway in the address storage unit according to the IP address information and the subscriber line port number information.

This system has the advantages of any of the foregoing embodiments, that is to say, the system can query the physical location of the non-IP fixed terminal that initiates the call, and estimate the IP address information of the access gateway closest to the non-IP fixed terminal. The physical location of the user terminal, or further accurately determine the physical location of the non-IP fixed terminal through the user line port number.

Device embodiment one:

Wherein, FIG. 7 is a schematic structural diagram of an access gateway according to an embodiment of the present invention;

As shown in Figure 7, the access gateway includes:

A message receiving unit, configured to receive a request initiated by a non-IP fixed terminal mounted on the gateway;

a request message generating unit, configured to generate a request message to the network side according to the request, where the request carries the IP address information of the access gateway;

A message sending unit, configured to transmit the request message to a network side device or an upper layer access gateway.

Moreover, in this embodiment, it also includes: a port number obtaining unit, configured to obtain the subscriber line port number of the non-IP fixed terminal under the gateway;

The request message generating unit is further configured to add the subscriber line port number of the non-IP fixed terminal under the gateway to the request message.

Wherein, the access gateway can also receive the related request information of the access gateway of the lower layer, for this reason, the message receiving unit is also used to receive the request message from the lower layer access gateway;

Wherein, the message forwarding unit is further configured to forward the request message to a network side device or an upper layer access gateway.

In addition, in this embodiment, the access gateway further includes: a protocol conversion unit, configured to perform protocol conversion on the request message generated by the request message generating unit or received by the message receiving unit;

The message sending unit is configured to transmit the protocol-converted request message to a network side device or an upper-layer access gateway.

Wherein, the access gateway can generate a call request initiated to the network side or the upper-layer access gateway based on the call initiated by the non-IP fixed terminal mounted on it, and the access gateway can also generate a call request to the lower-layer access gateway Protocol conversion and forwarding of incoming gateway requests.

Wherein, those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, , performing the steps comprising the above-mentioned method embodiment; and the aforementioned storage medium includes: a read-only memory (Read Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, a terminal mobile phone software or an optical disk Various media that can store program codes.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (13)

1. A method for determining the physical location of a non-IP fixed terminal, comprising: A. The access gateway receives a request initiated by a non-IP fixed terminal mounted on the gateway, and forms a request message carrying the IP address of the access gateway according to the request; B. Transfer the request message to the network side device, and the network side device determines the physical location of the non-IP fixed terminal according to the request message; Wherein, in step B, the request message is delivered to the network side device, including: The access gateway passes the request message layer to one or more upper-layer access gateways in a non-SIP format; wherein, when reaching the upper-layer access gateway closest to the network side, The upper layer access gateway transmits the request message to the network side device in SIP format. 2. The method for determining the physical location of a non-IP fixed terminal according to claim 1, wherein, in step A, further comprising: The request message also carries the subscriber line port number of the non-IP fixed terminal under the access gateway. 3. The method for determining the physical location of a non-IP fixed terminal according to claim 1 or 2, wherein the access gateway is the access gateway closest to the network side, and in step B, the request message is delivered For network-side devices, including: The access gateway transmits the request message to the network side device in SIP format. 4. The method for determining the physical location of the non-IP fixed terminal according to claim 1, wherein, in step B, determining the physical location of the non-IP fixed terminal according to the request message, specifically comprising: The network side device queries the pre-stored location corresponding information according to the IP address of the access gateway; The physical location of the corresponding access gateway is obtained according to the matching relationship of the IP address, and the physical location is used as the approximate physical location of the non-IP fixed terminal. 5. The method for determining the physical location of the non-IP fixed terminal according to claim 2, wherein in step B, determining the physical location of the non-IP fixed terminal according to the request message, specifically includes: The network side device queries the pre-stored location correspondence information according to the IP address of the access gateway and the subscriber line port number of the terminal; determining a corresponding access gateway according to the IP address; The accurate physical location of the non-IP fixed terminal under the access gateway is obtained according to the subscriber line port number. 6. A system for determining the physical location of a non-IP fixed terminal, comprising: Access gateways, including: A message receiving unit, configured to receive a request initiated by a non-IP fixed terminal mounted on the gateway; A request message generating unit, configured to form a request message carrying the IP address of the access gateway according to the request; A message sending unit, configured to deliver the request message layer to one or more upper-layer access gateways in a non-SIP format; wherein, when reaching the upper-layer access gateway closest to the network side, the upper-layer access gateway uses SIP The format transmits the request message to the network side device; The network side device is configured to determine the physical location of the non-IP fixed terminal according to the request message. 7. The system for determining the physical location of a non-IP fixed terminal according to claim 6, wherein the network side device includes: The address information acquisition unit is used to receive and store the IP address information of the access gateway and the physical location information of the access gateway; an address storage unit, configured to store the IP address information of the access gateway, the physical location information of the access gateway and their association; A message receiving unit, configured to receive the above-mentioned request message carrying IP address information; An address query unit, configured to query and acquire the physical location of the access gateway in the address storage unit according to the IP address information. 8. The system for determining the physical location of a non-IP fixed terminal according to claim 7, wherein the access gateway further includes: A port number obtaining unit, configured to obtain the subscriber line port number of the non-IP fixed terminal under the access gateway; The request message generating unit is further configured to add the subscriber line port into the request message. 9. The system for determining the physical location of a non-IP fixed terminal according to claim 8, wherein the address information acquisition unit is also used to receive and store the subscriber line port number of the non-IP fixed terminal under the access gateway information and physical location information; The address storage unit is also used to store the IP address information of the access gateway, the subscriber line port number information, the physical location information of the non-IP fixed terminal and their associations; The message receiving unit is configured to receive the above-mentioned request message carrying IP address information and subscriber line port number information; The address query unit is further configured to query and obtain the physical location of the access gateway in the address storage unit according to the IP address information and the subscriber line port number information. 10. An access gateway, comprising: The message receiving unit is used to receive a request from a non-IP fixed terminal mounted on the gateway; the request message generation unit is used to generate a request message to the network side according to the request, and the request carries the The IP address information of the access gateway; A message sending unit, configured to transmit the request message to the network-side device; wherein, transmitting the request message to the network-side device includes: The access gateway passes the request message layer to one or more upper-layer access gateways in a non-SIP format; wherein, when reaching the upper-layer access gateway closest to the network side, The upper layer access gateway transmits the request message to the network side device in SIP format. 11. The access gateway according to claim 10, further comprising: The port number obtaining unit is used to obtain the subscriber line port number of the non-IP fixed terminal under the gateway; the request message generation unit is also used to obtain the subscriber line port number of the non-IP fixed terminal under the gateway added to the request message. 12. The access gateway according to claim 10 or 11, wherein the message receiving unit is further configured to receive a request message from a lower layer access gateway; Wherein, the message sending unit is further configured to forward the request message to a network side device or an upper layer access gateway. 13. The access gateway according to claim 10 or 11, further comprising: A protocol conversion unit, configured to perform protocol conversion on the request message generated by the request message generating unit or received by the message receiving unit.