CN101483868A - Method, equipment and system for allocating application server - Google Patents
Method, equipment and system for allocating application server Download PDFInfo
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- CN101483868A CN101483868A CN200810056087.9A CN200810056087A CN101483868A CN 101483868 A CN101483868 A CN 101483868A CN 200810056087 A CN200810056087 A CN 200810056087A CN 101483868 A CN101483868 A CN 101483868A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
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Abstract
The invention discloses a method, a device and a system for distributing application servers, which mainly comprises: a home network receives an application server distribution message sent by a visit network; the application server distribution message is used for indicating whether the visit network is capable of distributing application servers, so as to facilitate the home network to determine application server distribution strategy for the users in the visit network based on the application server distribution message. The invention embodiment gets the home network to learn the application server distribution capacity of the visit network, so as to determine the processing process of distributing the application servers to the users, thereby reliably distributing the corresponding application servers to the users and ensuring normal communication process.
Description
Technical Field
The present invention relates to the field of network communication technologies, and in particular, to a method, a device, and a system for allocating an application server.
Background
In order to utilize the characteristics of good scalability and low cost of IP-based communication systems, IMS (IP multimedia subsystem) is introduced into 3GPP systems to provide conventional circuit-switched services and to provide various multimedia services to users.
In the process of the user developing service through the IMS network, a P-CSCF (Proxy-Call session control Function) is the first connection point for the user to communicate with the IMS network. Therefore, in an access network such as WiMAX (worldwide interoperability for microwave access) system, in order to communicate with an IMS network, an SS (user terminal)/MSS (mobile terminal) needs to know an IP address of at least one P-CSCF, so that at a SIP (session initiation protocol) layer, the corresponding P-CSCF serves as a SIP server to provide a corresponding service to an access network user.
Currently, an AAA (authentication, and accounting) server is responsible for allocating and notifying an access network to a SIP server used for a user to communicate with an IMS network, and the access network notifies a corresponding user of an IP address of the SIP server, so that the user can communicate with the IMS network through the corresponding SIP server.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
for MIP (mobile IP) scenarios, since the home network does not know whether the visited network deploys the IMS network, the corresponding SIP server needs to be allocated by the home network; at this time, if the HA (home agent) is already allocated in the visited network, it is likely that the HA and the SIP server allocated to the user are respectively located in different networks, which may cause the communication signaling to be incorrectly routed, and further cause the communication to be incorrectly performed. In the distribution process of the application server in other similar application scenarios, the corresponding problems also exist.
Disclosure of Invention
The embodiment of the invention provides a method, equipment and a system for distributing application servers, so that corresponding application servers can be reliably distributed to users, and the normal operation of a communication process is ensured.
A method of allocating application servers, comprising:
the home network receives application server allocation information sent by a visiting network, wherein the application server allocation information is used for indicating whether the visiting network has the capacity of allocating an application server;
and the home network determines an application server distribution strategy for the user in the visiting network according to the application server distribution information.
A network device, comprising:
a roaming user access unit for processing the process of accessing the user to the visit network;
an application server distribution information sending unit, configured to send local application server distribution information to a home network of a user accessed through the roaming user access unit, where the application server distribution information is used to indicate whether a visited network has an ability to distribute application servers.
Another network device, comprising:
the application server distribution information receiving unit is used for receiving the application server distribution information sent by the visiting network of the user;
and the application server distribution decision unit is used for determining an application server distribution strategy for the user in the visited network in the home network according to the application server distribution information received by the application server distribution information receiving unit.
A system for distributing application servers, comprising the first network device disposed in a visiting network, and the other network device (i.e. the second network device) disposed in a home network for communicating with the first network device.
It can be seen from the technical solutions provided in the embodiments of the present invention that, in the embodiments of the present invention, since the visited network notifies the home network of the application server allocation information, the home network can know the allocation capability of the application server of the visited network, so as to facilitate the processing procedure of deciding to allocate the application server to the user, so that the corresponding application server can be reliably allocated to the user, and the normal operation of the communication process is ensured.
Drawings
FIG. 1 is a schematic diagram of a process provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another network device according to an embodiment of the present invention.
Detailed Description
In the embodiment of the invention, in the process of accessing a visiting network by a user, the visiting network sends the allocation information of an application server in the network to a home network, and the allocation information of the application server is used for indicating whether the visiting network has the capacity of allocating the application server; so that the home network can determine the application server allocation strategy for the user in the visiting network according to the corresponding application server allocation information. The corresponding user may be a user terminal device, or may be a logical user (e.g., multiple users corresponding to multiple different identification cards corresponding to one user terminal device, etc.), and so on.
The corresponding application server allocation information comprises at least one of an indication of whether the capability of allocating the application server exists or not and application server information allocated by a visiting network; if the application server information allocated by the visited network is only used for indicating whether the visited network has the capability of allocating the application server, the method can be set to indicate that the visited network has the capability of allocating the application server if the application server information allocated by the visited network is included, otherwise, the visited network is considered not to have the capability of allocating the application server.
The process of determining the allocation policy of the application server may include: when the visiting network does not have the capability of allocating the application server, the home network allocates the corresponding application server for the user; or when the visiting network has the capability of distributing the application server, the home network determines that the visiting network or the home network distributes the corresponding application server for the user according to a preset strategy; or when the visiting network has the capability of allocating the application server, the home network sends the information of the application server allocated by the visiting network and the information of the application server allocated by the home network to the access network of the visiting network, and the access network selects the corresponding application server for the user.
In the specific application process of the embodiment of the present invention, a VAAA (visited AAA) server in a visited network and an HAAA (Home AAA) server in a Home network may be used in cooperation to implement the allocation process of the corresponding application server, which may specifically include:
in a roaming scene, in the user access authentication process, the VAAA server reports the distribution information of the application server to the HAAA server, so that the HAAA server decides the processing process of distributing the application server for the user according to the corresponding distribution information of the application server and determines the strategy of distributing the application server for the user. Wherein, the corresponding VAAA server in the visit network is used as AAA proxy, and has the function of distributing and reporting the address or domain name of the application server (such as the address or domain name of SIP server); the HAAA server of the home network has a function of deciding and assigning an address or a domain name of an application server (such as an address or a domain name of a SIP server) in the home network and the visited network.
The corresponding application server can be an application server in a wireless network such as an IMS service (SIP application) server, an IPTV (television based on IP) service server, a multicast broadcast service server, a positioning service server, a navigation service server, a general service server, a domain name server, a DHCP server and the like; the corresponding application server allocation information may be whether the application server allocation information has the capability of allocating the application server, or may be the application server information (such as an address or a domain name of the application server), or may include both the capability of allocating the application server and the application server information.
The policy determined by the HAAA server for allocating the application server to the user may specifically include:
(1) determining an allocation of an application server by an HAAA server for a user
The HAAA server determines to bear the address or the domain name of an application server distributed for the user in the home network in the access authorization message, and the address or the domain name is issued to the access network through the VAAA server.
In the case that the VAAA server does not support the allocation of the application server, the corresponding operation of allocating the application server to the user can only be completed by the HAAA server.
(2) Determining an allocation of an application server by a VAAA server for a user
If the HAAA server determines that the VAAA server allocates the application server for the user and receives the address or the domain name of the allocated application server sent by the VAAA server, the HAAA server loads the address or the domain name of the corresponding application server in the access authorization message and sends the access authorization message to the access network through the VAAA server so as to provide the access network for the user;
or,
if the HAAA server determines that the VAAA server allocates the application server to the user and does not receive the address or the domain name of the allocated application server sent by the VAAA server, the HAAA server sends an access authorization message not containing the address or the domain name of the application server to the VAAA server (optionally, the VAAA server may indicate the allocation of the application server in the message), and the VAAA server allocates the corresponding application server to the user and sends the application server to the access network after receiving the access authorization message, so as to provide the user.
(3) Determining an application server to be allocated by an access network selecting a VAAA server or a HAAA server
The address or domain name of the application server distributed by the HAAA server in the home network and the received address or domain name of the application server distributed by the VAAA server in the visiting network are both issued to the access network, and in the process that the terminal requests the address or domain name of the application server, the access network decides to issue the address or domain name of the application server distributed in the home network or the address or domain name of the application server distributed in the visiting network to the terminal.
Further, it may also need to allocate an HA (home agent) to the user in the network, and at this time, in order to ensure that the HA allocated to the user and the application server are in the same network, the embodiment of the present invention may specifically adopt the following implementation scheme:
(1) in a MIP (mobile IP) scenario, when a user accesses a visited network, if the visited network can provide an application server (i.e., can allocate a corresponding application server to the user), the VAAA server can carry an HA address allocated by the visited network and an application server address or a domain name in an access authentication request message sent to the HAAA server, so that the HAAA server can know whether the visited network can allocate the HA and the application server at the same time;
(2) after the HAAA server determines the distribution strategies of the HA and the application server, if the HA and the application server are allowed to be distributed in the visited network, the HAAA server carries the HA address and the application server address or the domain name distributed by the visited network in the successfully authenticated access authorization message sent to the VAAA server; otherwise, the access authorization message after successful authentication carries the HA allocated in the home network and the address or domain name of the application server;
(3) after receiving the access authorization message, the VAAA server forwards the access authorization message carrying the HA address and the address or domain name of the application server to the access network. Therefore, HA and the application server can be distributed in the same network, and the routing optimization of application layer signaling and data is realized.
The embodiment of the present invention may be specifically applied to a communication system including an IMS network, so as to allocate a corresponding SIP server P-CSCF to an access user, and the specific application will be described below.
After the embodiment of the invention is applied, in a roaming scene, the VAAA server in the visiting network informs the HAAA server in the home network of the P-CSCF information (such as P-CSCF address or domain name and the like) allocated to the user by the VAAA server in the visiting network in the user access authentication process, so that the HAAA server can conveniently decide the allocation of the P-CSCF. Therefore, in the MIP scene, the HAAA server can know whether the visit network can be simultaneously allocated with the corresponding HA and the P-CSCF, so that the allocation of the HA and the P-CSCF can be controlled, the HA and the P-CSCF can be allocated in the same network, and the routing optimization of the SIP signaling is further ensured.
If a user communicates with an IMS network based on SIP (session initiation protocol), a P-CSCF is used to implement the function of a SIP server in the SIP layer, and at this time, the allocation of the P-CSCF is equivalent to the allocation of the SIP server in the past.
For example, if the communication between the user and the IMS network is performed based on the SIP, further, in the roaming scenario, in the user access authentication process, the VAAA server reports the IMS capability (i.e., whether the capability of allocating the SIP server is provided) or the SIP server information (e.g., the SIP server address or the SIP server domain name) to the HAAA server, so that the HAAA server determines to send at least one of the home SIP server information and the visited SIP server information to the access network through the VAAA server. If the home SIP server information and the visit place SIP server information are both issued to the access network, the access network can decide to issue the home SIP server information or the visit place SIP server information to the terminal.
Referring to fig. 1, a corresponding SIP server allocation procedure may specifically include:
step 2, after receiving the access request message sent by the access network, if the VAAA server can allocate an SIP server to the terminal according to the roaming protocol, the VAAA server adds an SIP server address or a domain name (i.e. a vSIP server address or a domain name) of the visited network in the access request message and then sends the access request message to the HAAA server;
step 3, after receiving the access request message sent by the VAAA server, the HAAA server executes the communication process between the terminal and the HAAA server so as to perform access authentication operation on the terminal;
step 4, after the access authentication is successfully completed, the HAAA server decides the distribution of the SIP server and sends an access authorization message to the VAAA server;
if the SIP server is allowed to be allocated in the visit network, the HAAA carries the SIP server address or the SIP server domain name of the visit network in the access authorization message after successful authentication;
if the SIP server is not allowed to be allocated in the visiting network, the HAAA carries the SIP server address or the SIP server domain name (namely hSIP server address or domain name) of the home network in the access authorization message after successful authentication;
and 5, after receiving the access authorization message, the VAAA forwards the corresponding access authorization message carrying the SIP server address or the SIP server domain name to the access network.
It should be noted that, if, in step 2, the VAAA server only reports the IMS capability to the HAAA server, then, in subsequent step 4, if the SIP server is allowed to be allocated in the visited network, the access authorization message at this time obviously cannot carry the SIP server address or the SIP server domain name of the visited network, and therefore, the access authorization message may carry a corresponding indication that the visited network allocates the SIP server, so that the VAAA server may determine to allocate the SIP server by itself according to the indication after receiving the message, and if the access authorization message does not carry the indication, the VAAA server may also find that the message does not carry the SIP server address or the SIP server domain name after receiving the access authorization message, and determine to allocate the SIP server by itself.
In the process of developing a service, if HA needs to be allocated to a user, the corresponding process of allocating HA may be combined with the process of allocating an SIP server, and in an MIP scenario, the corresponding process of allocating an SIP server and an HA may specifically include:
if the visited network can allocate the SIP server, the access authentication request message carries HA information (such as an HA address and the like) allocated by the visited network and SIP server information, so that the HAAA server can know whether the visited network can allocate the corresponding HA and SIP server at the same time.
Step 2, after receiving the access authentication request message sent by the VAAA server, the HAAA server performs an allocation operation of the HA and the SIP server, specifically including:
if the HA and the SIP server are allowed to be distributed in the visit network, the HA information and the SIP server information of the visit network are carried in an access authorization message sent to the VAAA server after the HAAA server successfully authenticates;
if the HA and the SIP server are not allowed to be allocated in the visiting network, the HAAA server carries the SIP server and the HA allocated by the home network in an access authorization message sent to the VAAA server after successful authentication.
And 3, after receiving the access authorization message, the VAAA server sends the corresponding access authorization message to the access network so that the access network can know the HA information and the SIP server information distributed to the access network.
Through the processing procedure, the HA and the SIP server can be ensured to be distributed in the same network, and the route of the SIP signaling is optimized.
The embodiment of the invention also provides a system for distributing application servers, which comprises network equipment arranged in a network of a visiting place and network equipment arranged in a home network, wherein:
as a network device in a user visited network, such as a VAAA server, a corresponding structure is shown in fig. 2, and may specifically include:
(1) a roaming user access unit for processing the process of accessing the user to the visit network;
(2) an application server allocation information sending unit, configured to send local application server allocation information to a home network of a user accessed through the roaming user access unit, where the application server allocation information is used to indicate whether a visited network has an application server allocation capability;
wherein the corresponding application server allocation information comprises at least one of an indication of whether the capability of allocating the application server is available and application server information allocated by the visited network.
The network device may further include an application server allocation unit, configured to allocate a corresponding application server in a visited network for the user, and specifically, may be configured to allocate a corresponding application server in a visited network for the user when the user accesses through the roaming user access unit or when the application server information is not obtained from a home network.
As network devices in the home network of the user, such as HAAA servers, etc., the corresponding structure is shown in fig. 3, which may specifically include:
(1) the application server distribution information receiving unit is used for receiving the application server distribution information sent by the visiting network of the user;
similarly, the corresponding application server allocation information includes at least one of an indication of whether the application server allocation capability is available or not and application server information allocated by the visited network, wherein if the application server information allocated by the visited network is only used to indicate whether the visited network has the application server allocation capability or not, the setting can be made such that if the application server information allocated by the visited network is included, the visited network has the application server allocation capability, otherwise, the visited network is considered to have no application server allocation capability;
(2) the application server distribution decision unit is used for determining an application server distribution strategy for a user in a visiting network in a home network according to the application server distribution information received by the application server distribution information receiving unit;
optionally, the application server allocation decision unit may specifically include the following units:
the judging unit is used for judging whether the visiting network has the capacity of distributing the application server according to the distribution information of the application server received by the distribution information receiving unit of the application server;
the application server allocation processing unit is used for allocating a corresponding application server for the user by the home network when the visiting network does not have the capacity of allocating the application server according to the judgment result of the judging unit; when the visiting network has the capacity of distributing the application server, the home network determines that the visiting network or the home network distributes the corresponding application server for the user according to a preset strategy, or informs the access network to select the application server distributed by the visiting network or the application server distributed by the home network for the user;
an information sending unit, configured to send at least one of the application server allocated by the home network and the application server allocated by the visited network to the visited network according to the processing result of the application server allocation processing unit, or send an instruction for allocating the application server by the visited network to the visited network; optionally, the information sending unit may be further configured to send the home agent information and the application server information in the same network as the application server to the visited network.
It should be noted that the units included in the two network devices may also be simultaneously installed in the same network device, for example, in an AAA server, so that the network device may be used as both a VAAA server and an HAAA server.
It should be noted that the application server mentioned in each of the above embodiments of the present invention may be a SIP server in the IMS, an IPTV server, a multicast broadcast service server, a positioning server, a navigation server, a general service server, or the like, or may be another application server in a wireless network. Moreover, the allocation process employed for different application servers is similar to the process of allocating SIP servers, except that the allocation information of the servers is different (i.e. the addresses and domain names of the servers are different) and therefore not described in detail.
In summary, the implementation of the embodiment of the present invention can reliably allocate the corresponding application server to the user in the roaming scenario, so that the user in the roaming scenario obtains the corresponding service. Meanwhile, the home network can acquire the providing capability of the application server in the visiting network, so that the home network can more conveniently decide the allocation strategy of the corresponding application server, and the allocation process of the home network management application server is facilitated. Moreover, HA allocation and transmission can be carried out in the process of allocating the application server, so that the application server allocated to the same user and the HA can be ensured to be positioned in the same network, and the corresponding signaling route is optimized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (13)
1. A method of allocating application servers, comprising:
the home network receives application server allocation information sent by a visiting network, wherein the application server allocation information is used for indicating whether the visiting network has the capacity of allocating an application server;
and the home network determines an application server distribution strategy for the user in the visiting network according to the application server distribution information.
2. The method of claim 1, wherein the application server allocation information comprises at least one of an indication of whether the capability to allocate an application server is available and application server information for visited network allocation.
3. The method of claim 1, wherein the determining an application server allocation policy comprises:
when the visiting network does not have the capability of allocating the application server, the home network allocates the corresponding application server for the user;
or,
when the visiting network has the capability of distributing the application server, the home network determines that the visiting network or the home network distributes the corresponding application server for the user according to a preset strategy;
or,
when the visiting network has the capability of distributing the application server, the home network sends the information of the application server distributed by the visiting network and the information of the application server distributed by the home network to the access network of the visiting network, and the access network selects the corresponding application server for the user.
4. The method of claim 2, further comprising:
after receiving the application server information distributed to the user by the visiting network, the home network sends the application server information distributed to the user by the visiting network or the home network to the visiting network;
or,
if the visiting network does not receive the application server information which is sent by the home network and allocated to the user by the visiting network or the home network, the visiting network allocates a corresponding application server to the user.
5. The method of any one of claims 1 to 4, further comprising: the home network sends home agent information in the same network with an application server allocated for the user to the visiting network; the visiting network sends the home agent information which is in the same network with the application server distributed for the user to the home network.
6. A network device, comprising:
a roaming user access unit for processing the process of accessing the user to the visit network;
an application server distribution information sending unit, configured to send local application server distribution information to a home network of a user accessed through the roaming user access unit, where the application server distribution information is used to indicate whether a visited network has an ability to distribute application servers.
7. The network device of claim 6, further comprising:
and the application server allocation unit is used for allocating a corresponding application server for the user in the visiting network when the user accesses through the roaming user access unit or the application server information is not obtained from the home network.
8. The network device of claim 6, wherein the application server assignment information comprises at least one of an indication of whether the capability to assign an application server is available and application server information for visited network assignments.
9. A network device, comprising:
the application server distribution information receiving unit is used for receiving the application server distribution information sent by the visiting network of the user;
and the application server distribution decision unit is used for determining an application server distribution strategy for the user in the visited network in the home network according to the application server distribution information received by the application server distribution information receiving unit.
10. The network device of claim 9, wherein the application server assignment information comprises at least one of an indication of whether the capability to assign an application server is available and application server information for visited network assignments.
11. The network device according to claim 9 or 10, wherein the application server allocation decision unit comprises:
the judging unit is used for judging whether the visiting network has the capacity of distributing the application server according to the distribution information of the application server received by the distribution information receiving unit of the application server;
the application server allocation processing unit is used for allocating a corresponding application server for the user by the home network when the visiting network does not have the capacity of allocating the application server according to the judgment result of the judging unit; when the visiting network has the capacity of distributing the application server, the home network determines that the visiting network or the home network distributes the corresponding application server for the user according to a preset strategy, or informs the access network to select the application server distributed by the visiting network or the application server distributed by the home network for the user;
and the information sending unit is used for sending at least one of the application server distributed by the home network and the application server distributed by the visiting network to the visiting network according to the processing result of the application server distribution processing unit, or sending an instruction of distributing the application server by the visiting network to the visiting network.
12. The network device of claim 11, wherein the information sending unit is further configured to send home agent information and application server information in the same network as the application server to the visited network.
13. A system for allocating an application server, comprising a network device as claimed in any one of claims 6 to 8 provided in a visited network, and a network device as claimed in any one of claims 9 to 12 provided in a home network in communication therewith.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810056087.9A CN101483868B (en) | 2008-01-11 | 2008-01-11 | Method, equipment and system for allocating application server |
| PCT/CN2009/070065 WO2009089783A1 (en) | 2008-01-11 | 2009-01-07 | Method, device and system for assigning the application server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810056087.9A CN101483868B (en) | 2008-01-11 | 2008-01-11 | Method, equipment and system for allocating application server |
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| Publication Number | Publication Date |
|---|---|
| CN101483868A true CN101483868A (en) | 2009-07-15 |
| CN101483868B CN101483868B (en) | 2011-02-02 |
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| CN200810056087.9A Expired - Fee Related CN101483868B (en) | 2008-01-11 | 2008-01-11 | Method, equipment and system for allocating application server |
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| CN (1) | CN101483868B (en) |
| WO (1) | WO2009089783A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105612774A (en) * | 2014-03-06 | 2016-05-25 | 华为技术有限公司 | Proximity service control method, device and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7533160B2 (en) * | 2003-02-18 | 2009-05-12 | Qualcomm Incorporated | Provisioning server information in a mobile station |
| KR101085633B1 (en) * | 2004-05-17 | 2011-11-22 | 삼성전자주식회사 | Method and apparatus for selecting location-server of mobile terminal when roaming and method for locating mobile terminals using the same |
| CN101047616A (en) * | 2006-05-13 | 2007-10-03 | 华为技术有限公司 | Method for distributing homeplace agent |
| CN100589661C (en) * | 2007-11-01 | 2010-02-10 | 中兴通讯股份有限公司 | A method for getting agent call session control function address in roaming |
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- 2009-01-07 WO PCT/CN2009/070065 patent/WO2009089783A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105612774A (en) * | 2014-03-06 | 2016-05-25 | 华为技术有限公司 | Proximity service control method, device and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101483868B (en) | 2011-02-02 |
| WO2009089783A1 (en) | 2009-07-23 |
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