CN109756408B - Calling method, system and computer readable storage medium - Google Patents
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Abstract
The present disclosure provides a calling method, a system and a computer readable storage medium, relating to the technical field of VoWiFi, wherein the method comprises the following steps: receiving a call request of VoWiFi user equipment by ePDG equipment, wherein the call request carries a called number, and the called number is a fixed telephone number of a VoWiFi user equipment access place; the ePDG equipment extracts a local IP address of the VoWiFi user equipment, wherein the local IP address is obtained in the process of establishing an IP tunnel between the ePDG equipment and the VoWiFi user equipment; the ePDG equipment sends the call request and the local IP address to the call control equipment, so that the call control equipment searches the area code of the VoWiFi user equipment access area according to the local IP address under the condition that the fixed telephone number does not contain the area code, and calls after adding the searched area code in front of the fixed telephone number. The method and the device can enable the VoWiFi user to call without additionally dialing the area code when dialing the fixed telephone number of the access place.
Description
Technical Field
The present disclosure relates to the field of WiFi (Voice over WiFi, WiFi-based Voice service) technology, and in particular, to a calling method, system, and computer-readable storage medium.
Background
The Voice Over internet protocol (VoWiFi) is used as an important supplementary means of the VoLTE (Voice Over LTE), abundant Wireless Local Area Network (WLAN) resources are fully utilized, the problems of insufficient indoor coverage of the LTE and the like are effectively solved, and the quality of mobile Voice service is effectively improved.
In the WLAN coverage area, the VoWiFi user equipment may access the 4G core network of the operator through an ePDG (Evolved Packet Data Gateway) device and then enter the IMS (IP Multimedia Subsystem) of the operator.
Disclosure of Invention
The inventor finds that currently, since the IMS cannot identify the access place of the VoWiFi user equipment, the VoWiFi user equipment must include the area code of the access place when dialing the fixed telephone number of the access place, otherwise, the call of the VoWiFi user equipment to the fixed telephone number of the access place cannot be realized.
In order to solve the above problems, the present disclosure proposes the following solutions.
According to an aspect of the embodiments of the present disclosure, there is provided a calling method, including: an evolved packet data gateway ePDG device receives a call request of VoWiFi user equipment, wherein the call request carries a called number, and the called number is a fixed telephone number of a VoWiFi user equipment access place; the ePDG equipment extracts a local IP address of the VoWiFi user equipment, wherein the local IP address is obtained in the process of establishing an IP tunnel between the ePDG equipment and the VoWiFi user equipment; the ePDG equipment sends the call request and the local IP address to the call control equipment, so that the call control equipment searches the area code of the VoWiFi user equipment access area according to the local IP address under the condition that the fixed telephone number does not contain the area code, and calls after adding the searched area code in front of the fixed telephone number.
In some embodiments, the method further comprises: the VoWiFi user equipment is accessed to a wireless local area network, and acquires the local IP address from the wireless local area network; the VoWiFi user equipment acquires the IP address of the ePDG equipment; and the VoWiFi user equipment establishes an IP tunnel with the ePDG equipment by taking the local IP address as a source address and the IP address of the ePDG equipment as a target address.
In some embodiments, the ePDG device sends the local IP address to the call control device via the diameter protocol.
In some embodiments, the ePDG device sends the home IP address to the call control device via the AAA server and the HSS server.
According to another aspect of the embodiments of the present disclosure, there is provided a calling system including: the ePDG equipment is used for receiving a call request of the VoWiFi user equipment, wherein the call request carries a called number, and the called number is a fixed telephone number of a VoWiFi user equipment access place; extracting a local IP address of the VoWiFi user equipment, wherein the local IP address is obtained in the process of establishing an IP tunnel between the ePDG equipment and the VoWiFi user equipment; sending the call request and the local IP address to a call control device; and the call control device is used for searching the area code of the VoWiFi user equipment access area according to the local IP address under the condition that the fixed telephone number does not contain the area code, and calling after adding the searched area code in front of the fixed telephone number.
In some embodiments, the system further comprises: the VoWiFi user equipment is used for accessing a wireless local area network and acquiring the local IP address from the wireless local area network; acquiring an IP address of ePDG equipment; and establishing an IP tunnel between the ePDG equipment and the local IP address serving as a source address and the IP address of the ePDG equipment serving as a target address.
In some embodiments, the ePDG device is configured to send the local IP address to the call control device via the diameter protocol.
In some embodiments, the ePDG device is configured to send the home IP address to the call control device via the AAA server and the HSS server.
According to still another aspect of the embodiments of the present disclosure, there is provided a calling system including: a memory; and a processor coupled to the memory, the processor configured to perform the method of any of the above embodiments based on instructions stored in the memory.
According to yet another aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method according to any one of the embodiments described above.
In the embodiment of the disclosure, after receiving a call request of a VoWiFi user equipment, an ePDG device extracts a local IP address of the VoWiFi user equipment, and sends the local IP address and the call request I to a call control device. The call control device can search the area code of the VoWiFi user equipment access area according to the local IP address under the condition that the fixed telephone number does not contain the area code, and then call after adding the searched area code in front of the fixed telephone number. The embodiment enables the VoWiFi user to call without additionally dialing the area code when dialing the fixed telephone number of the access place.
The technical solution of the present disclosure is further described in detail by the accompanying drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a network architecture according to one embodiment of the present disclosure;
FIG. 2 is a flow diagram of a method of calling according to one embodiment of the present disclosure;
FIG. 3 is a schematic block diagram of a call system according to one embodiment of the present disclosure;
FIG. 4 is a schematic block diagram of a call system according to another embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a call system according to yet another embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic diagram of a network architecture according to one embodiment of the present disclosure. Fig. 2 is a flow diagram of a calling method according to one embodiment of the present disclosure.
A call method according to an embodiment of the present disclosure is described in detail below with reference to fig. 1 and 2.
In step 202, the ePDG device receives a call request of the VoWiFi user equipment, where the call request carries a called number, where the called number is a fixed telephone number of a location where the VoWiFi user equipment is accessed.
For example, the VoWiFi user equipment may first establish an IP tunnel with the ePDG device, and then establish a point-to-point connection with a PDG (PDN gateway) through the established IP tunnel to access the 4G core network. An exemplary procedure for a VoWiFi user device to establish an IP tunnel with an ePDG device is described below.
First, a VoWiFi user device accesses a WLAN and obtains a local IP address from the WLAN. Here, after the VoWiFi user equipment accesses the WLAN, the WLAN may assign a local IP address to the VoWiFi user equipment.
Then, the VoWiFi user equipment acquires the IP address of the ePDG equipment. For example, a VoWiFi user equipment may obtain a preconfigured IP address of an ePDG locally; as another example, the VoWiFi user device may locally obtain a domain name of the preconfigured ePDG, and then resolve the domain name into a corresponding IP address through a Domain Name Server (DNS).
And then, the VoWiFi user equipment establishes an IP tunnel with the ePDG equipment by taking the local IP address as a source address and the IP address of the ePDG equipment as a target address.
After the IP tunnel is established, the VoWiFi user equipment may initiate an Authentication request for accessing the 4G core network through the ePDG device, and after the Authentication is successful, the ePDG device obtains subscription data of the VoWiFi user equipment from an AAA (Authentication, Authorization, Accounting, verification, Authorization, and Accounting) server, and obtains a remote IP address of the VoWiFi user equipment from a PGW.
At step 204, the ePDG device extracts the local IP address of the VoWiFi user device.
Here, the local IP address is obtained in the process of establishing an IP tunnel between the ePDG device and the VoWiFi user equipment. After receiving a call request of the VoWiFi user equipment, the ePDG equipment locally extracts a local IP address of the corresponding VoWiFi user equipment.
In step 206, the ePDG device sends the call request and the local IP address to the call control device, so that the call control device searches the area code of the VoWiFi user equipment access area according to the local IP address when the fixed phone number does not include the area code, and calls after adding the searched area code in front of the fixed phone number.
In one implementation, the ePDG device may send the local IP address to the call control device over the diameter protocol. In some embodiments, the ePDG device may send the local IP address to the call control device via network elements such as an AAA Server and an HSS (Home Subscriber Server).
The Call Control device may comprise a CSCF (Call Session Control Function) entity, such as an I-CSCF (Interrogating CSCF, Interrogating CSCF or S-CSCF (Serving CSCF).
The call control device (e.g. I-CSCF or S-CSCF) may pre-store a mapping relationship between the local IP address and the area code, and after receiving the local IP address, may search for the area code of the corresponding VoWiFi user equipment access area according to the mapping relationship. Thus, the call control apparatus can make a call after adding an area code before the fixed telephone number.
In the above embodiment, after receiving the call request from the VoWiFi user equipment, the ePDG device extracts the local IP address of the VoWiFi user equipment, and sends the local IP address and the call request to the call control device. The call control device can search the area code of the VoWiFi user equipment access area according to the local IP address under the condition that the fixed telephone number does not contain the area code, and then call after adding the searched area code in front of the fixed telephone number. The embodiment enables the VoWiFi user to call without additionally dialing the area code when dialing the fixed telephone number of the access place.
It should be noted that in the network architecture shown in fig. 1, some network elements, such as PGW or P-CSCF (Proxy CSCF), perform the same or similar functions as those performed by the existing network elements, and are not described herein too much.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Fig. 3 is a schematic structural diagram of a call system according to one embodiment of the present disclosure. As shown in fig. 3, the system may include an ePDG device 301 and a call control device 302.
The ePDG device 301 is configured to receive a call request of the VoWiFi user device 303, where the call request carries a called number, and the called number is a fixed telephone number of a location where the VoWiFi user device 303 is accessed; extracting a local IP address of the VoWiFi user equipment, wherein the local IP address is obtained in the process of establishing an IP tunnel between the ePDG equipment and the VoWiFi user equipment; the call request and the local IP address are sent to the call control device. For example, the ePDG device 301 may be configured to send the local IP address to the call control device 302 via the diameter protocol. In some embodiments, the ePDG device 301 is configured to send the home IP address to the call control device 302 via the AAA server and the HSS server.
The call control device 302 is configured to, when the fixed phone number does not include an area code, search for an area code of the access area of the VoWiFi user equipment 303 according to the local IP address, and call after adding the searched area code before the fixed phone number.
In the above embodiment, after receiving the call request from the VoWiFi user equipment, the ePDG device extracts the local IP address of the VoWiFi user equipment, and sends the local IP address and the call request to the call control device. The call control device can search the area code of the VoWiFi user equipment access area according to the local IP address under the condition that the fixed telephone number does not contain the area code, and then call after adding the searched area code in front of the fixed telephone number. The embodiment enables the VoWiFi user to call without additionally dialing the area code when dialing the fixed telephone number of the access place.
In some embodiments, referring to fig. 1, the call system may further include a VoWiFi user device 303 for accessing the WLAN and obtaining a local IP address from the WLAN; acquiring an IP address of ePDG equipment 301; an IP tunnel is established with the ePDG device 301 with the local IP address as source address and the IP address of the ePDG device 301 as destination address.
Fig. 4 is a schematic structural diagram of a call system according to another embodiment of the present disclosure. As shown in fig. 4, the system includes a memory 401 and a processor 402. The memory 401 may be a magnetic disk, flash memory, or any other non-volatile storage medium. The memory is used for storing the corresponding instructions of the method of any one of the previous embodiments. Coupled to memory 401, processor 402 may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 402 is configured to execute instructions stored in the memory 401 to enable a VoWiFi user to make a call without additionally dialing an area code when dialing a fixed telephone number of an access site.
Fig. 5 is a schematic structural diagram of a call system according to yet another embodiment of the present disclosure. As shown in fig. 5, the system 500 includes a memory 501 and a processor 502. The processor 502 is coupled to the memory 501 by a BUS (BUS) 503. The system 500 may also be connected to an external storage device 505 through a storage interface 504 to call external data, and may also be connected to a network or an external computer system (not shown) through a network interface 506.
In the embodiment, the data instruction is stored in the memory, and the instruction is processed by the processor, so that the VoWiFi user can call the fixed telephone number of the access place without additionally dialing the area code.
The present disclosure also provides a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of any of the preceding embodiments. As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
The methods and apparatus of the present disclosure may be implemented in a number of ways. For example, the methods and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A method of calling, comprising:
receiving a call request of VoWiFi user equipment by ePDG equipment, wherein the call request carries a called number, and the called number is a fixed telephone number of a VoWiFi user equipment access place;
the ePDG equipment extracts a local IP address of the VoWiFi user equipment, wherein the local IP address is obtained in the process of establishing an IP tunnel between the ePDG equipment and the VoWiFi user equipment;
the ePDG equipment sends the call request and the local IP address to the call control equipment, so that the call control equipment searches the area code of the VoWiFi user equipment access area according to the local IP address under the condition that the fixed telephone number does not contain the area code, and calls after adding the searched area code in front of the fixed telephone number.
2. The method of claim 1, further comprising:
the VoWiFi user equipment is accessed to a wireless local area network, and acquires the local IP address from the wireless local area network;
the VoWiFi user equipment acquires the IP address of the ePDG equipment;
and the VoWiFi user equipment establishes an IP tunnel with the ePDG equipment by taking the local IP address as a source address and the IP address of the ePDG equipment as a target address.
3. The method of claim 1, wherein,
and the ePDG equipment sends the local IP address to the call control equipment through a diameter protocol.
4. The method of any one of claims 1-3,
the ePDG device sends the local IP address to the call control device via the AAA server and the HSS server.
5. A calling system, comprising:
the ePDG equipment is used for receiving a call request of the VoWiFi user equipment, wherein the call request carries a called number, and the called number is a fixed telephone number of a VoWiFi user equipment access place; extracting a local IP address of the VoWiFi user equipment, wherein the local IP address is obtained in the process of establishing an IP tunnel between the ePDG equipment and the VoWiFi user equipment; sending the call request and the local IP address to a call control device;
and the call control device is used for searching the area code of the VoWiFi user equipment access area according to the local IP address under the condition that the fixed telephone number does not contain the area code, and calling after adding the searched area code in front of the fixed telephone number.
6. The system of claim 5, further comprising:
the VoWiFi user equipment is used for accessing a wireless local area network and acquiring the local IP address from the wireless local area network; acquiring an IP address of ePDG equipment; and establishing an IP tunnel between the ePDG equipment and the local IP address serving as a source address and the IP address of the ePDG equipment serving as a target address.
7. The system of claim 6, wherein,
the ePDG equipment is used for sending the local IP address to the call control equipment through a diameter protocol.
8. The system of any one of claims 5-7,
the ePDG device is used for sending the local IP address to the call control device through the AAA server and the HSS server.
9. A calling system, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of any of claims 1-4 based on instructions stored in the memory.
10. A computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any one of claims 1-4.
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| CN101001468A (en) * | 2007-01-12 | 2007-07-18 | 华为技术有限公司 | Internet protocal carried voice user accessing method, positioning device and network equipment |
| CN101136971A (en) * | 2007-09-12 | 2008-03-05 | 傅海波 | Method for distributing telecom district number for internet communication terminal number |
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