CN108289079B - Method and device for controlling session refreshing time length - Google Patents

Method and device for controlling session refreshing time length Download PDF

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Publication number
CN108289079B
CN108289079B CN201710014351.1A CN201710014351A CN108289079B CN 108289079 B CN108289079 B CN 108289079B CN 201710014351 A CN201710014351 A CN 201710014351A CN 108289079 B CN108289079 B CN 108289079B
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session
time length
refreshing time
client
cscf
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CN108289079A (en
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吴鹏程
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration

Abstract

The invention relates to the wireless communication field, in particular to a method and a device for controlling session refreshing time length, which aims to solve the problem that the existing session refreshing mechanism can not reflect the difference of different session flows of different clients, and the method comprises the steps that S-CSCF obtains the session refreshing time length preset aiming at each session flow of each client, and after obtaining the expected session refreshing time length set aiming at the current session flow from the client, the session refreshing time length of the client corresponding to the current session flow is determined based on the user identification corresponding to the client and the flow identification corresponding to the current session flow, the smaller of the two session refreshing time lengths is taken as the target session refreshing time length of the client to be sent to the client, thus, the S-CSCF can configure different session refreshing time lengths for different session flows of different clients, thereby not only meeting the actual requirements of different session flows of the client, and the system telephone traffic parameters are flexibly distributed, and the load of the system is reduced.

Description

Method and device for controlling session refreshing time length
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method and an apparatus for controlling a session refresh duration.
Background
Session Initiation Protocol (SIP) is a Multimedia communication Protocol, a text-based application-layer control Protocol for creating, modifying and releasing sessions of one or more participants, and is widely used in IP Multimedia Subsystem (IMS), commonly referred to as telephony service.
As is well known, the quality of service of a telephone service (e.g., an audio/video call, a video conference, etc.) is related to a signal, and for some environments (e.g., a coal mining site, a remote mountain area, etc.), the telephone service is often interrupted due to signal loss.
For example, in a roadway of a 4G dongtou coal mine project site for mining, a communication link is very easy to be interrupted, if a site technician is performing a multi-party video conference with a command center, a dispatching desk and a non-site technician, the command center, the dispatching desk and the non-site technician cannot know whether the site technician is online or not and cannot know the actual site situation in time.
Normally, the session flow of the telephone service needs to be refreshed continuously, so that even if the communication link is flashed, the interrupted telephone service can be continued.
In general, the session flow includes the following four types: the method comprises a re-registration flow, a call flow, a subscription flow and a message flow, wherein the session flow refreshing comprises the following four steps: re-registration flow refreshing, call flow refreshing, subscription flow refreshing and message flow refreshing.
Taking the re-registration flow refresh as an example, in the prior art, a manner that a user sends a re-registration message to a server at regular time is adopted, wherein the re-registration message is carried by an SIP signaling, and the time length (interval time before and after sending the re-registration message) for sending the re-registration message to the server by the user is uniformly configured by the server to a re-registration timer and is issued to each user, and the sending time length of the re-registration message of each user is consistent, in general, the sending time length of the re-registration message is set to be extremely short in order to ensure the quality of a telephone service, but by adopting the manner, the inside of the server is flooded with a large amount of re-registration messages, and the load of the server is too large.
Then, in the above manner, if there is a high requirement for the sending time length of the re-registration message by the telephone service of the individual user, that is, the time length needs to be set to be short, even if the requirement for the telephone service of other users is not high, the re-registration message is sent in the same time length, so that the load of the server is too large, and for the server, once the configuration of the re-registration timer is completed, the re-registration timer is not easily changed.
In summary, the session refresh mechanism in the prior art still has many defects and shortcomings, and a new method for controlling the session refresh duration needs to be designed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling session refreshing time length, which are used for solving the problems that the session refreshing time length in the existing session refreshing mechanism cannot reflect the difference of different session flows of different clients, and the session refreshing time length is not easy to change once a network side configures the clients.
The embodiment of the invention provides the following specific technical scheme:
a method of session refresh duration control, comprising:
a service call session control network element S-CSCF receives a session refreshing time length set sent by an operation maintenance platform, wherein the session refreshing time length set comprises corresponding session refreshing time lengths preset by the operation maintenance platform for each session flow of each client;
the method comprises the steps that S-CSCF obtains a first session refreshing time length from a client, wherein the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow;
the S-CSCF screens out the session refreshing time length which is set corresponding to the user identifier and the process identifier and serves as a second session refreshing time length in the session refreshing time length set on the basis of the user identifier corresponding to the client and the process identifier corresponding to the current session process;
and the S-CSCF takes the smaller of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, and sends the target session refreshing time length to the client.
Optionally, obtaining a first session refresh duration from a client, where the first session refresh duration is an expected session refresh duration set by the client for a current session flow, includes:
receiving a session message corresponding to a current session flow sent by the client, wherein the session message carries an overflow header field, and a parameter value corresponding to the overflow header field is an expected session refresh duration set by the client for the current session flow;
determining an overflow header field corresponding to the session message based on the session message;
and extracting a parameter value in the overflow header field, and determining the parameter value as a first session refresh duration.
Optionally, sending the target session refresh duration to the client includes:
adding the target session refreshing time length to an overflow header domain corresponding to a session response message sent to the client;
and sending the session response message to the client.
Optionally, after sending the target session refresh duration to the client, the method further includes:
adding the target session refreshing time length to an overflow header domain corresponding to a session message sent to a server;
and sending the session message to the server.
A method of session refresh duration control, comprising:
the operation maintenance platform sets corresponding session refreshing time length aiming at each session flow of each client in advance to form a session refreshing time length set;
the operation maintenance platform sends the session refreshing time length set to a service call session control network element S-CSCF, and triggers the S-CSCF to execute the following operations: receiving the session refreshing time length set sent by the operation and maintenance platform; acquiring a first session refreshing time length from a client, wherein the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow; in the session refreshing time length set, based on the user identifier corresponding to the client and the process identifier corresponding to the current session process, screening the session refreshing time length set corresponding to the user identifier and the process identifier as a second session refreshing time length; and taking the smaller one of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, and sending the target session refreshing time length to the client.
Optionally, the sending, by the operation and maintenance platform, the session refresh time set to the S-CSCF includes:
the operation maintenance platform sends the session refreshing time length set to an attribution signing user server (HSS), triggers the HSS to store the session refreshing time length set in a local corresponding storage area, and forwards the session refreshing time length set to an S-CSCF; alternatively, the first and second electrodes may be,
when the operation maintenance platform executes the updating operation on the session refreshing time length set, the updated session refreshing time length set is sent to the HSS, the HSS is triggered to correspond to the updated session refreshing time length set, the session refreshing time length set stored in a local corresponding storage area is correspondingly updated, and the updated session refreshing time length set is forwarded to the S-CSCF.
An apparatus for session refresh duration control, comprising:
the system comprises a receiving unit, a processing unit and a processing unit, wherein the receiving unit is used for receiving a session refreshing time length set sent by an operation and maintenance platform, and the session refreshing time length set comprises corresponding session refreshing time lengths which are preset by the operation and maintenance platform for each session flow of each client;
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a first session refreshing time length from a client, and the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow;
a screening unit, configured to screen out, in the session refresh duration set, a session refresh duration set corresponding to the user identifier and the flow identifier based on the user identifier corresponding to the client and the flow identifier corresponding to the current session flow, and use the session refresh duration set as a second session refresh duration;
and the processing unit is used for taking the smaller one of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length and sending the target session refreshing time length to the client.
Optionally, the obtaining unit is configured to obtain a first session refresh duration from a client, where the first session refresh duration is an expected session refresh duration set by the client for a current session flow, and the obtaining unit is configured to:
receiving a session message corresponding to a current session flow sent by the client, wherein the session message carries an overflow header field, and a parameter value corresponding to the overflow header field is an expected session refresh duration set by the client for the current session flow;
determining an overflow header field corresponding to the session message based on the session message;
and extracting a parameter value in the overflow header field, and determining the parameter value as a first session refresh duration.
Optionally, when the target session refresh duration is sent to the client, the processing unit is configured to:
adding the target session refreshing time length to an overflow header domain corresponding to a session response message sent to the client;
and sending the session response message to the client.
Optionally, after sending the target session refresh duration to the client, the processing unit is further configured to:
adding the target session refreshing time length to an overflow header domain corresponding to a session message sent to a server;
and sending the session message to the server.
An apparatus for session refresh duration control, comprising:
the setting unit is used for setting corresponding session refreshing time length aiming at each session flow of each client in advance to form a session refreshing time length set;
a processing unit, configured to send the session refresh time set to a serving call session control network element S-CSCF, and trigger the S-CSCF to perform the following operations: receiving the session refreshing time length set sent by the device; acquiring a first session refreshing time length from a client, wherein the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow; in the session refreshing time length set, based on the user identifier corresponding to the client and the process identifier corresponding to the current session process, screening the session refreshing time length set corresponding to the user identifier and the process identifier as a second session refreshing time length; and taking the smaller one of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, and sending the target session refreshing time length to the client.
Optionally, when the session refresh time length set is sent to the S-CSCF, the processing unit is configured to:
sending the session refreshing time length set to an attribution subscriber server (HSS), triggering the HSS to store the session refreshing time length set in a local corresponding storage area, and forwarding the session refreshing time length set to an S-CSCF; alternatively, the first and second electrodes may be,
when the device executes the updating operation on the session refreshing time length set, the updated session refreshing time length set is sent to the HSS, the HSS is triggered to correspond to the updated session refreshing time length set, the session refreshing time length set stored in a local corresponding storage area is correspondingly updated, and the updated session refreshing time length set is forwarded to the S-CSCF.
In the embodiment of the invention, the operation maintenance platform sets the corresponding session refreshing time length aiming at each session flow of each client in advance to form a session refreshing time length set, and sends the session refreshing time length set to the S-CSCF, the S-CSCF obtains the session refreshing time length set, and after the first refreshing time length which is set aiming at the current session flow and is taken as the expected session refreshing time length is obtained from the client, the second session refreshing time length corresponding to the current session flow of the client is determined from the session refreshing time length set based on the user identification corresponding to the client and the flow identification corresponding to the current session flow, the smaller one of the first session refreshing time length and the second session refreshing time length is selected as the target session refreshing time length of the client and sent to the client, thus, the S-CSCF can configure different session refreshing time lengths for different session flows of different clients, the method and the system not only meet the actual requirements of different session flows of the client, but also can flexibly distribute the telephone traffic parameters, reduce the load of the system, and meanwhile, can modify the session refreshing time of various session flows at any time through the operation and maintenance platform without being solidified in the client, thereby improving the user experience, and moreover, the existing SIP protocol does not need to be changed, and the method and the system are convenient to popularize in the existing network architecture.
Drawings
FIG. 1 is a flowchart of a session refresh duration control method according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating an operation maintenance platform sending a session refresh duration to an HSS according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a session refresh duration control process of a re-registration process according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a session refresh duration control process of a call flow according to an embodiment of the present invention
FIG. 5 is a diagram illustrating the functional structure of S-CSCF in the embodiment of the present invention;
fig. 6 is a functional structure diagram of an operation maintenance platform according to an embodiment of the present invention.
Detailed Description
In order to solve the problems that the session refreshing time length in the existing session refreshing mechanism can not reflect the difference of different session flows of different clients and the session refreshing time length is not easy to change once a network side configures the client, the embodiment of the invention redesigns a session refreshing time length control method, which comprises the steps of setting a corresponding session refreshing time length for each session flow of each client in advance by an operation maintenance platform, forming a session refreshing time length set, sending the session refreshing time length set to an S-CSCF, obtaining the session refreshing time length set by the S-CSCF, obtaining a first refreshing time length which is set for the current session flow and is used as an expected session refreshing time length from the client, determining a second session refreshing time length corresponding to the current session flow from the session refreshing time length set based on a user identifier corresponding to the client and a flow identifier corresponding to the current session flow, and selecting the smaller of the first session refreshing time length and the second session refreshing time length as the target session refreshing time length of the client, and sending the target session refreshing time length to the client.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the prior art, session refreshing time durations of different session flows of different clients are uniformly configured on a network side and are fixedly written into the network side, so that the session refreshing time durations are not easy to change, and the session refreshing time durations corresponding to the different session flows of the different clients are the same.
Different from the prior art, in the embodiment of the invention, the operation and maintenance platform is used for setting the corresponding session refreshing time lengths in advance according to different session flows of different clients, the network side obtains the session refreshing time lengths corresponding to the different session flows of the different clients in real time from the operation and maintenance platform, then, the session refreshing time lengths are compared with the corresponding session refreshing time lengths actually expected by each client, a smaller party is screened out as a target session refreshing time length and is issued to the corresponding client, the session refreshing time lengths corresponding to the different session flows of the different clients different from the original client are solidified and the same, the difference of the different session flows of each client can be reflected, and corresponding adjustment can be made according to the real-time condition.
Referring to fig. 1, in the embodiment of the present invention, a flow of a session refresh duration control method is as follows:
step 100: the operation maintenance platform sets corresponding session refreshing time length aiming at each session flow of each client in advance to form a session refreshing time length set.
Specifically, the operation maintenance platform sets a corresponding session refresh time length for each session flow of each client in advance to form a session refresh time length set, preferably, in the embodiment of the present invention, after the operation maintenance platform sets a corresponding session refresh time length for different session flows of each client, the session refresh time lengths corresponding to different session flows of each client in the session refresh time length set are shown in the following table, taking 3 clients as an example.
TABLE 1
Figure BDA0001205628930000081
In table 1, User identifiers (PUI) corresponding to 3 clients are respectively User identifier 1, User identifier 2, and User identifier 3, taking client 1 as an example, a maximum re-registration flow refresh time interval (hereinafter, referred to as a re-registration refresh time length) corresponding to client 1 is 100 seconds, a maximum call flow refresh time interval (hereinafter, referred to as a call refresh time length) corresponding to client 1 is 1800 seconds, a maximum subscription flow refresh time interval (hereinafter, referred to as a subscription refresh time length) corresponding to client 1 is 1800 seconds, and a maximum message flow refresh time interval (hereinafter, referred to as a message refresh time length) corresponding to client 1 is 1800 seconds.
Step 110: and the operation maintenance platform sends the session refreshing time length set to a service call session control network element S-CSCF.
Specifically, the operation and maintenance platform sends the set session refresh duration set to a Home Subscriber Server (HSS) and the HSS stores the set session refresh duration set in a local corresponding storage area.
Further, before sending the session refresh duration set to the HSS, the operation and maintenance platform may take the session flows corresponding to the different session flows of each client in the session refresh duration set as a group of data, and then send each group of data to the HSS at the same time, or send each group of data packets to the HSS.
Referring to fig. 2, once the operation maintenance platform performs operations such as modifying and deleting on any one session refresh duration in the session refresh duration set, or adds session refresh durations of different session flows corresponding to other clients in the session refresh duration set, the session refresh durations are sent to the HSS again, and the HSS updates the session refresh duration corresponding to the local storage after receiving the updated session refresh duration.
For example, assuming that the operation and maintenance platform modifies the re-registration refresh time of the client 1, and modifies the original "100 seconds" to "1000 seconds", the operation and maintenance platform will send the modified re-registration refresh time "1000 seconds" corresponding to the client 1 to the HSS, and after receiving the re-registration refresh time "1000 seconds" corresponding to the client 1 in the local storage area, the HSS will modify the original "100 seconds" to "1000 seconds".
Furthermore, after receiving the session refresh duration of different session flows corresponding to each client, the HSS needs to send the received session refresh duration of different session flows corresponding to each client to a network side (hereinafter referred to as S-CSCF) based on a User-authentication-Answer (UAA) message in a 3GPP protocol, but in the existing 3GPP protocol, the UAA message sent by the HSS to the S-CSCF does not carry the re-registration refresh duration, the call refresh duration, the subscription refresh duration, and the message refresh duration.
In this way, the HSS receives the session refreshing time lengths of different session flows corresponding to the clients and forwards the session refreshing time lengths to the S-CSCF through the UAA message in the new message format.
Step 120: the method comprises the steps that an S-CSCF receives a session refreshing time length set sent by an operation maintenance platform, and first session refreshing time length is obtained from a client, wherein the first session refreshing time length is expected session refreshing time length set by the client for a current session flow.
Specifically, the S-CSCF receives a session message corresponding to a current session flow sent by a client, where the session message carries an overflow expires header field, a parameter value corresponding to the expires header field is an expected session refresh duration set by the client for the current session flow, then the S-CSCF determines the expires header field corresponding to the session message in the received session message, and then extracts the parameter value in the expires header field, where the parameter value is the first session refresh duration.
For example, if the client 1 expects that the interval time for sending the re-registration message to the S-CSCF is "300 seconds" in the re-registration process, the client 1 writes the parameter value in the expires header field of the registration message 1 sent to the S-CSCF as "300 seconds", which indicates that the re-registration refresh time is expected to be "300 seconds", and the S-CSCF parses "300 seconds" from the expires header field of the re-registration message 1 after receiving the re-registration message 1 from the client 1, and uses "300 seconds" as the first re-registration refresh time of the client 1.
For another example, if the client 1 expects that the interval time for sending the call message to the S-CSCF is "600 seconds" in the call flow, the client 1 writes the parameter value in the expires header field of the call message 1 sent to the S-CSCF as "600 seconds", which indicates that the expected call refresh time is "600 seconds", and the S-CSCF parses "600 seconds" from the expires header field of the call message 1 after receiving the call message 1 from the client 1, and uses "600 seconds" as the first call refresh time of the client 1.
Step 130: and the S-CSCF screens out the session refreshing time length which is set corresponding to the user identifier and the process identifier and serves as a second session refreshing time length in the received session refreshing time length set based on the user identifier corresponding to the client and the process identifier corresponding to the current session process.
Specifically, the S-CSCF determines, based on the user identifier corresponding to the client, a session refresh duration for each session flow corresponding to the client in the received session refresh duration set, and then, based on the flow identifier corresponding to the current session flow, screens, in the session refresh duration for each session flow corresponding to the client, the session refresh duration for the current session flow corresponding to the client.
For example, taking the client 1 in table 1 as an example, if the S-CSCF receives the re-registration message 1 sent by the client 1, based on the user identifier 1 of the client 1, it is determined that the re-registration refresh duration of the client 1 is "100 seconds", the call refresh duration is "1800 seconds", the subscription refresh duration is "1800 seconds", and the message refresh duration is "1800 seconds", and then, based on the process identifier 1 of the re-registration process corresponding to the re-registration message 1, the re-registration refresh duration "100 seconds" of the re-registration process corresponding to the client 1 is queried, and "100 seconds" is used as the second re-registration refresh duration.
For another example, still taking the client 1 in table 1 as an example, if the S-CSCF receives the call message 1 sent by the client 1, based on the user identifier 1 of the client 1, it is determined that the re-registration refresh duration of the client 1 is "100 seconds", the call refresh duration is "1800 seconds", the subscription refresh duration is "1800 seconds", and the message refresh duration is "1800 seconds", and then, based on the flow identifier 2 of the call flow corresponding to the call message 1, the call refresh duration "1800 seconds" of the call flow corresponding to the client 1 is queried, and "1800 seconds" is used as the second call refresh duration.
Step 140: and the S-CSCF takes the smaller of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, and sends the target session refreshing time length to the corresponding client.
Specifically, the S-CSCF compares the size of the first session refreshing time length and the second session refreshing time length, determines the smaller of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, adds the target session refreshing time length to an expires header field corresponding to a session response message sent to the client, and then sends the session response message to the client to inform the client of the target session refreshing time length.
For example, continuing with the above example, for the re-registration process of the client 1, if the S-CSCF determines that the first re-registration refresh duration is "300 seconds" and the queried second re-registration refresh duration is "100 seconds" in the re-registration message 1 sent by the client 1, the S-CSCF will use "100 seconds" as the target re-registration refresh duration of the client 1, add "100 seconds" to the expires header field of the re-registration response message 1 returned to the client 1, and notify the client 1 that the target re-registration refresh duration of the current re-registration process is "100 seconds" through the re-registration response message 1.
For another example, continuing with the above example, for the call flow of the client 1, if the S-CSCF determines that the first call refresh duration is "600 seconds" in the call message 1 sent by the client 1, and the queried second call refresh duration is "1800 seconds", the S-CSCF will use "600 seconds" as the target call refresh duration of the client 1, add "100 seconds" to the expires header field of the call response message 1 returned to the client 1, and notify the client 1 that the target call refresh duration of the current call flow is "600 seconds" through the call response message 1.
Therefore, after receiving the session response message, the client analyzes the expire header field of the session response message to obtain the target session refresh duration, and then the client refreshes by taking the target session refresh duration as a session refresh period to detect whether the current session is online.
The following further describes embodiments of the present invention with reference to specific implementation scenarios.
Scene one:
referring to fig. 3, a re-registration process is taken as an example.
Step 1: the client UE sends a SIP REGISTER (REGISTER) request message to a discovered Proxy Call Session control function (P-CSCF).
Step 2: the P-CSCF processes this REGISTER request message and sends the REGISTER request message to the selected Interrogating Call Session Control Function (I-CSCF).
And step 3: the I-CSCF then contacts the HSS and issues a Cx Query message to the HSS to Query the address of a Serving Call Session Control Function (S-CSCF).
And 4, step 4: the HSS selects an S-CSCF and sends the S-CSCF address to the I-CSCF via a Cx Query Response (Cx-Query Response) message.
And 5: after completion of the S-CSCF selection, the I-CSCF forwards the REGISTER request message to the selected S-CSCF.
Step 6: the S-CSCF finds that the client is not authorized and sends a Cx Authentication (Cx-Authentication) message to the HSS to obtain the Authentication data.
And 7: the HSS returns the authentication data to the S-CSCF through a User-Authorization-answer (UAA) message.
In step 7, the UAA message includes a re-registration flow refresh duration, a call flow refresh duration, a subscription flow refresh duration, and a message flow refresh duration, and the specific message format is shown in table 1.
After receiving the UAA message, the S-CSCF stores the re-registration flow refreshing time length, the call flow refreshing time length, the subscription flow refreshing time length and the message flow refreshing time length in a storage area corresponding to the client, and subsequently, according to different session flows where the client is located, the session refreshing time lengths corresponding to different session flows can be filled in corresponding overflow header areas (expires).
And 8: the S-CSCF challenges the client with a "401 Unauthorized" response and passes this response message to the I-CSCF.
And step 9: the I-CSCF sends a "401 Unauthorized" response to the P-CSCF.
Step 10: the P-CSCF sends a "401 Unauthorized" response to the UE.
Step 11: the UE will calculate the challenge response and send a new REGISTER request message to the P-CSCF containing the response.
Step 12: the P-CSCF will again find the I-CSCF and send a new REGISTER request message to the I-CSCF.
Step 13: the I-CSCF then contacts the HSS and sends a Cx-Query message to the HSS to Query the address of the S-CSCF.
Step 14: the HSS sends the selected S-CSCF address to the I-CSCF via a Cx Query Response (Cx-Query Response) message.
The I-CSCF forwards the new REGISTER request to the selected S-CSCF, step 15.
The S-CSCF will check this response and if not, the authentication will fail and the registration procedure will terminate. If the authentication is correct, the authentication is successful.
Step 16: the S-CSCF successfully checks the authentication and sends a Cx push or Cx push (Cx-Put \ Cx-Pull) message to the HSS.
And step 17: the HSS stores the name of the S-CSCF corresponding to the client and returns a Cx push Response or a Cx push Response (Cx-Put Response \ Cx-Pull Response) message to the S-CSCF, and the S-CSCF stores corresponding client information.
Step 18: the S-CSCF sends a "200 OK" message to the I-CSCF indicating acceptance of the registration.
In the message, the parameter value in the expires queries the session refresh duration corresponding to the current session flow of the client according to the user identifier PUI of the client, and fills the session refresh duration in the 200OK message.
Step 19: the I-CSCF forwards the "200 OK" message to the P-CSCF.
Step 20: the P-CSCF sends a "200 OK" message to the UE.
Step 21: the S-CSCF sends a registration request (REGISTER) message to an Application Server (AS).
Step 22: the AS returns a "200 OK" message to the S-CSCF indicating acceptance of this registration.
In step 5 of the re-registration process, the S-CSCF receives a request message (hereinafter, referred to as a registration message) sent by the client, where the registration message carries an expires header field set by the user, and then extracts a parameter value from the header field, where the parameter value is a session refresh duration a expected to be reached by the client.
In step 7 of the re-registration procedure, the S-CSCF determines a session refresh duration B corresponding to the client in the re-registration procedure, that is, a re-registration procedure refresh duration B, takes a smaller value of a and B, and records the smaller value as C, and writes C into a corresponding position of an expires header field in a response message returned to the client, for example, in step 8, writes C into the expires header field of a "401 Unauthorized" response message, so as to inform the client of the re-registration procedure refresh duration of the current re-registration procedure.
Of course, in the re-registration process corresponding to the client, if the registration message does not include the expires header field, the S-CSCF adds the expires header field with the parameter value C to the corresponding response message returned, and if the registered message includes the expires header field, compares the parameter value in the expires header field with the size of C, assigns the smaller value to C, and adds the expires header field with the parameter value C to the corresponding response message returned.
For the request initiated by the S-CSCF itself, AS in step 21 of the above re-registration procedure, the S-CSCF writes C in the expires header field of the registration message sent to the AS, and the AS re-assigns the parameter value to C in the "200 OK" message returned to the S-CSCF if the parameter value of the expires header field of the "200 OK" message is smaller than C.
In the above re-registration process, for the client, no matter the received "401 Unauthorized" response or "200 OK" message, the parameter value C in the corresponding expires header field is taken as the re-registration process refresh duration, and preferably, in the embodiment of the present invention, the unit of the re-registration refresh duration is second.
Scene two:
referring to fig. 4, a call flow is taken as an example.
Step 1: the S-CSCF receives a call message of the calling client UE1, the value of an expire header field carried in the call message is marked as A, the S-CSCF inquires a call flow refresh time length B of a call flow corresponding to the calling UE1 in a session refresh time length set sent by the HSS, and the smaller value between A and B is marked as C.
Step 2: the S-CSCF sends a call message to the called UE2 and writes C in the expire header field in the call message.
And step 3: the called UE2 returns a 200OK message to the S-CSCF, writing the parameter value of the expire header field in the 200OK message as D (typically D is C).
And 4, step 4: the S-CSCF extracts D of the expire header field in the obtained 200OK message, compares the sizes of C and D, records the smaller value of the C1 and stores C1, and then sends the 200OK message to the calling UE1, wherein the parameter value in the expire header field of the 200OK message is C1.
And 5: the calling UE1 sends an ACK (acknowledgement) message to the S-CSCF with the parameter value for the expire header field written as E (typically E equals C1).
Step 6: and the S-CSCF extracts the parameter value E of the expire header field in the obtained ACK message, compares the E with C1, records the smaller value of the E and the C1 as C2, stores the C2 and then sends the ACK message to the calling UE1, wherein the parameter value in the expire header field of the ACK message is C2.
Referring to fig. 5, in the embodiment of the present invention, the apparatus for controlling the session refresh time duration (e.g., S-CSCF) includes a receiving unit 50, an obtaining unit 51, a filtering unit 52 and a processing unit 53, wherein,
a receiving unit 50, configured to receive a session refreshing time length set sent by an operation and maintenance platform, where the session refreshing time length set includes a corresponding session refreshing time length that is preset by the operation and maintenance platform for each session flow of each client;
an obtaining unit 51, configured to obtain a first session refresh duration from a client, where the first session refresh duration is an expected session refresh duration set by the client for a current session flow;
a screening unit 52, configured to screen out, in the session refresh duration set, session refresh durations set corresponding to the user identifier and the flow identifier based on the user identifier corresponding to the client and the flow identifier corresponding to the current session flow, and use the session refresh durations as second session refresh durations;
and the processing unit 53 is configured to take the smaller of the first session refreshing duration and the second session refreshing duration as a target session refreshing duration, and send the target session refreshing duration to the client.
Optionally, the obtaining unit 51 is configured to obtain a first session refresh duration from a client, where the first session refresh duration is an expected session refresh duration set by the client for a current session flow, and is configured to:
receiving a session message corresponding to a current session flow sent by the client, wherein the session message carries an overflow header field, and a parameter value corresponding to the overflow header field is an expected session refresh duration set by the client for the current session flow;
determining an overflow header field corresponding to the session message based on the session message;
and extracting a parameter value in the overflow header field, and determining the parameter value as a first session refresh duration.
Optionally, when the target session refresh duration is sent to the client, the processing unit 53 is configured to:
adding the target session refreshing time length to an overflow header domain corresponding to a session response message sent to the client;
and sending the session response message to the client.
Optionally, after sending the target session refresh duration to the client, the processing unit 53 is further configured to:
adding the target session refreshing time length to an overflow header domain corresponding to a session message sent to a server;
and sending the session message to the server.
Referring to fig. 6, in the embodiment of the present invention, the apparatus for controlling the session refresh time (e.g., the operation and maintenance platform) includes a setting unit 60 and a processing unit 61, wherein,
a setting unit 60, configured to set a corresponding session refresh duration for each session flow of each client in advance, so as to form a session refresh duration set;
a processing unit 61, configured to send the session refresh time length set to a serving call session control network element S-CSCF, and trigger the S-CSCF to perform the following operations: receiving the session refreshing time length set sent by the device; acquiring a first session refreshing time length from a client, wherein the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow; in the session refreshing time length set, based on the user identifier corresponding to the client and the process identifier corresponding to the current session process, screening the session refreshing time length set corresponding to the user identifier and the process identifier as a second session refreshing time length; and taking the smaller one of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, and sending the target session refreshing time length to the client.
Optionally, when sending the session refresh time length set to the S-CSCF, the processing unit 61 is configured to:
sending the session refreshing time length set to an attribution subscriber server (HSS), triggering the HSS to store the session refreshing time length set in a local corresponding storage area, and forwarding the session refreshing time length set to an S-CSCF; alternatively, the first and second electrodes may be,
when the device executes the updating operation on the session refreshing time length set, the updated session refreshing time length set is sent to the HSS, the HSS is triggered to correspond to the updated session refreshing time length set, the session refreshing time length set stored in a local corresponding storage area is correspondingly updated, and the updated session refreshing time length set is forwarded to the S-CSCF.
In the embodiment of the invention, the operation maintenance platform sets the corresponding session refreshing time length aiming at each session flow of each client in advance to form a session refreshing time length set, and sends the session refreshing time length set to the S-CSCF, the S-CSCF obtains the session refreshing time length set, and after the first refreshing time length which is set aiming at the current session flow and is taken as the expected session refreshing time length is obtained from the client, the second session refreshing time length corresponding to the current session flow of the client is determined from the session refreshing time length set based on the user identification corresponding to the client and the flow identification corresponding to the current session flow, the smaller one of the first session refreshing time length and the second session refreshing time length is selected as the target session refreshing time length of the client and sent to the client, thus, the S-CSCF can configure different session refreshing time lengths for different session flows of different clients, the method and the system not only meet the actual requirements of different session flows of the client, but also can flexibly distribute the telephone traffic parameters, reduce the load of the system, and meanwhile, can modify the session refreshing time of various session flows at any time through the operation and maintenance platform without being solidified in the client, thereby improving the user experience, and moreover, the existing SIP protocol does not need to be changed, and the method and the system are convenient to popularize in the existing network architecture.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims (12)

1. A method for session refresh duration control, comprising:
a service call session control network element S-CSCF receives a session refreshing time length set sent by an operation and maintenance platform, wherein the session refreshing time length set comprises corresponding session refreshing time lengths preset by the operation and maintenance platform for each session flow of each client, the operation and maintenance platform sends the session refreshing time length set to a home subscriber server HSS, and the HSS is triggered to forward the session refreshing time length set to the S-CSCF;
the method comprises the steps that S-CSCF obtains a first session refreshing time length from a client, wherein the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow;
the S-CSCF screens out the session refreshing time length which is set corresponding to the user identifier and the process identifier and serves as a second session refreshing time length in the session refreshing time length set on the basis of the user identifier corresponding to the client and the process identifier corresponding to the current session process;
and the S-CSCF takes the smaller of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, and sends the target session refreshing time length to the client.
2. The method of claim 1, wherein obtaining a first session refresh duration from a client, the first session refresh duration being a desired session refresh duration set by the client for a current session flow, comprises:
receiving a session message corresponding to a current session flow sent by the client, wherein the session message carries an overflow header field, and a parameter value corresponding to the overflow header field is an expected session refresh duration set by the client for the current session flow;
determining an overflow header field corresponding to the session message based on the session message;
and extracting a parameter value in the overflow header field, and determining the parameter value as a first session refresh duration.
3. The method of claim 1 or 2, wherein sending the target session refresh duration to the client comprises:
adding the target session refreshing time length to an overflow header domain corresponding to a session response message sent to the client;
and sending the session response message to the client.
4. The method of claim 3, wherein after sending the target session refresh duration to the client, further comprising:
adding the target session refreshing time length to an overflow header domain corresponding to a session message sent to a server;
and sending the session message to the server.
5. A method for session refresh duration control, comprising:
the operation maintenance platform sets corresponding session refreshing time length aiming at each session flow of each client in advance to form a session refreshing time length set;
the operation maintenance platform sends the session refreshing time length set to a Home Subscriber Server (HSS), triggers the HSS to forward the session refreshing time length set to a service call session control network element (S-CSCF), and triggers the S-CSCF to execute the following operations: receiving the session refreshing time length set sent by the operation and maintenance platform; acquiring a first session refreshing time length from a client, wherein the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow; in the session refreshing time length set, based on the user identifier corresponding to the client and the process identifier corresponding to the current session process, screening the session refreshing time length set corresponding to the user identifier and the process identifier as a second session refreshing time length; and taking the smaller one of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, and sending the target session refreshing time length to the client.
6. The method of claim 5, wherein the operation and maintenance platform sending the set of session refresh durations to the S-CSCF comprises:
the operation maintenance platform sends the session refreshing time length set to an attribution signing user server (HSS), triggers the HSS to store the session refreshing time length set in a local corresponding storage area, and forwards the session refreshing time length set to an S-CSCF; alternatively, the first and second electrodes may be,
when the operation maintenance platform executes the updating operation on the session refreshing time length set, the updated session refreshing time length set is sent to the HSS, the HSS is triggered to correspond to the updated session refreshing time length set, the session refreshing time length set stored in a local corresponding storage area is correspondingly updated, and the updated session refreshing time length set is forwarded to the S-CSCF.
7. An apparatus for session refresh duration control, comprising:
a receiving unit, configured to receive a session refresh duration set sent by an operation and maintenance platform, where the session refresh duration set includes a corresponding session refresh duration that is preset by the operation and maintenance platform for each session flow of each client, and the operation and maintenance platform sends the session refresh duration set to a home subscriber server HSS, and triggers the HSS to forward the session refresh duration set to an S-CSCF;
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a first session refreshing time length from a client, and the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow;
a screening unit, configured to screen out, in the session refresh duration set, a session refresh duration set corresponding to the user identifier and the flow identifier based on the user identifier corresponding to the client and the flow identifier corresponding to the current session flow, and use the session refresh duration set as a second session refresh duration;
and the processing unit is used for taking the smaller one of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length and sending the target session refreshing time length to the client.
8. The apparatus of claim 7, wherein a first session refresh duration is obtained from a client, the first session refresh duration being a desired session refresh duration set by the client for a current session flow, the obtaining unit is configured to:
receiving a session message corresponding to a current session flow sent by the client, wherein the session message carries an overflow header field, and a parameter value corresponding to the overflow header field is an expected session refresh duration set by the client for the current session flow;
determining an overflow header field corresponding to the session message based on the session message;
and extracting a parameter value in the overflow header field, and determining the parameter value as a first session refresh duration.
9. The apparatus of claim 7 or 8, wherein when sending the target session refresh duration to the client, the processing unit is configured to:
adding the target session refreshing time length to an overflow header domain corresponding to a session response message sent to the client;
and sending the session response message to the client.
10. The apparatus of claim 9, wherein after sending the target session refresh duration to the client, the processing unit is further to:
adding the target session refreshing time length to an overflow header domain corresponding to a session message sent to a server;
and sending the session message to the server.
11. An apparatus for session refresh duration control, comprising:
the setting unit is used for setting corresponding session refreshing time length aiming at each session flow of each client in advance to form a session refreshing time length set;
a processing unit, configured to send the session refresh time length set to a home subscriber server HSS, trigger the HSS to forward the session refresh time length set to a serving call session control network element S-CSCF, and trigger the S-CSCF to perform the following operations: receiving the session refreshing time length set sent by the device; acquiring a first session refreshing time length from a client, wherein the first session refreshing time length is an expected session refreshing time length set by the client aiming at a current session flow; in the session refreshing time length set, based on the user identifier corresponding to the client and the process identifier corresponding to the current session process, screening the session refreshing time length set corresponding to the user identifier and the process identifier as a second session refreshing time length; and taking the smaller one of the first session refreshing time length and the second session refreshing time length as a target session refreshing time length, and sending the target session refreshing time length to the client.
12. The apparatus of claim 11, wherein the processing unit, when sending the set of session refresh durations to an S-CSCF, is to:
sending the session refreshing time length set to an attribution subscriber server (HSS), triggering the HSS to store the session refreshing time length set in a local corresponding storage area, and forwarding the session refreshing time length set to an S-CSCF; alternatively, the first and second electrodes may be,
when the device executes the updating operation on the session refreshing time length set, the updated session refreshing time length set is sent to the HSS, the HSS is triggered to correspond to the updated session refreshing time length set, the session refreshing time length set stored in a local corresponding storage area is correspondingly updated, and the updated session refreshing time length set is forwarded to the S-CSCF.
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