CN102325141B - Method for balancing registration/subscription refreshing load of internet protocol (IP) multimedia sub-system and system - Google Patents
Method for balancing registration/subscription refreshing load of internet protocol (IP) multimedia sub-system and system Download PDFInfo
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Abstract
The invention discloses a method for balancing the registration/subscription refreshing load of an internet protocol (IP) multimedia sub-system and a system; the method comprises the steps that: registration/subscription terminals in the internet protocol (IP) multimedia sub-system (IMS) respectively send registration/subscription requests to a server; the server return registration/subscription success messages with refresh values to the registration/subscription terminals according to the registration/subscription requests; and the registration/subscription terminals list the refresh time in a fixed refresh cycle according to the refresh values in the registration/subscription success messages, and present a refresh request to the server when the refresh time is up. By listing the refresh time in the fixed refresh cycle, the invention solves the problem that the load for call session control function (CSCF) and access gateway control function (AGCF) to process the refresh of registration/subscription is unbalanced when the refresh time is quite concentrated, and has the beneficial effect of ensuring the stability of the IMS.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of IMS (IP Multimedia Subsystem, IP multimedias
System) refresh registration/subscription load balancing method and system.
Background technology
With the fast development that the communications field makes rapid progress, IMS is also in continuous accelerated development.IMS network is in IP network
Produce on the basis of network, controlled by SIP (Session Initiation Protocol, Session initiation Protocol) message
Session, can very easily realize miscellaneous service, and substantially reduce cost.
CSCF (Call Session Control Function, CSCF) realizes Call-Establish-Success rate
Function, is the functional entity inside IMS, is the core of whole IMS network.It manages user's registration authentication, the IMS of IMS network
Loading end QoS (Quality of Service, service quality) and other network entities coordinate the control for carrying out SIP sessions, with
And service negotiation and resource allocation etc..
AGCF (Access Gateway Control Function, AGCF) merges in fixed network equipment
To having important function during IMS.It has AGCF, and traditional narrow user is in IMS network for access.
AGCF is interacted with Mw with IMS CSCF equipment, functions simultaneously as MGC (Media Gateway Controller, WMG
Controller) function with the interfaces such as P1 and AGW/RGW (Access Gateway, access gateway/Residential Gateway, firmly
Family gateway) etc. traditional fixed terminal interaction.
User needs to be registered to IMS network by CSCF before using IMS business.In practical application, CSCF process registrations
The flow process of request is as follows：
1) IMS such as IMS terminal or AGCF access devices send initial registration request to CSCF.
2) after the success of CSCF register and authentications, judge that whether effective persistent period EXPIRE values in initial registration request exist
In the range of CSCF acceptables, if can receive, CSCF is in the response message that 200OK response messages are initial registration request
In insert the EXPIRE values of initial registration request.If beyond the scope that receives of CSCF, CSCF is fixed using one
EXPIRE values are consulted with registration request promoter.Consult successfully, CSCF inserts the EXPIRE values of negotiation in 200OK.
3) IMS terminal or AGCF are received after 200OK message, according to the algorithm that the EXPIRE values in 200OK and 3GPP recommend
Calculate the time of refresh registration request next time.The algorithm of 3GPP suggestions is as follows：If EXPIRE ＞ 1200, refresh time is to work as
Front time+EXPIRE-600.If EXPIRE ＜=1200, refresh time is current time+EXPIRE/2.
In superincumbent handling process, there are problems that one significantly：If the initial registration request that CSCF is received compares
Concentrate, or initial registration is concentrated in identical refresh registration section cycle time, while the EXPIRE value phases in registration request
Meanwhile, CSCF can be caused to process refresh registration load unbalanced.During refresh registration load peak, systematic function may be made
Into impact, others IMS business is affected.
AGCF accesses the agency of IMS as traditional fixed terminal user, acts on behalf of user under conventional terminal and initiates just to CSCF
Begin registration and refresh registration.Under current location registration process flow process, equally it is likely to occur that AGCF refresh registrations load is uneven
The situation of weighing apparatus.For example after AGCF is restarted, just succeed in registration on CSCF in user's short time of Carrier Requirements AGCF agencies.This
In the case of kind, while CSCF and AGCF refresh registration loads can be caused unbalanced.
Refresh subscription procedure and refresh registration process is essentially identical, therefore, refresh subscription procedure and there is also and refresh registration
The same problem of process.
The content of the invention
It is an object of the invention to provide a kind of method of IP Multimedia System refresh registration/subscription load balancing and being
System, can preferably solve initial registration/subscriptions compare concentrate or initial registration/subscription concentrate on identical refresh cycle time
In section, while when the EXPIRE values in registration/subscription request are identical, it is uneven that CSCF and AGCF processes refresh registration/subscription load
The problem of weighing apparatus.When being related to " registration/subscribe to " in the present invention, "/" be or the meaning, represent that the present invention is applied to refresh registration mistake
Journey refreshes subscription procedure.
According to an aspect of the invention, there is provided a kind of IP Multimedia System refresh registration/subscription load balancing
Method, methods described includes：
Registration/subscription end in IP Multimedia System IMS sends registration/subscription request to server respectively；
The server returns the note for carrying freshness value to the registration/subscription end according to the registration/subscription request
Volume/subscribe to success message；
The freshness value of the registration/subscription end in the registration/subscription success message, refresh time is hashed
Within the fixed refresh cycle, and when the refresh time is reached, to the server refresh requests are initiated.
Wherein, the step of sending registration/subscription request is specially：The IMS terminal or AGCF AGCF
Entity to CSCF CSCF entities send registration/subscription request.
Wherein, the step of server returns registration/subscription success message includes：
Effective persistent period Expire value hashings in the registration/subscription request are obtained new freshness value by CSCF,
So that IMS terminal or AGCF are hashed in the fixed refresh cycle according to the first time refresh time that the new freshness value is calculated
It is interior；
CSCF sends the registration/subscription success message for carrying new freshness value to IMS terminal or AGCF.
Wherein, refresh time hash is included within the fixed refresh cycle and the step of sending refresh requests：
The described new freshness value of IMS terminal or AGCF in the registration/subscription success message hashes refresh time
Within the fixed refresh cycle；
IMS terminal or AGCF send refresh requests after the refresh time reaches to CSCF.
Wherein, send to CSCF and also include after refresh requests step：
CSCF is received after the refresh requests, arranges Expire values so that IMS terminal or AGCF are according to the Expire values
The refresh interval for calculating is equal to the fixed refresh cycle；
CSCF sends the Flushing success message for carrying Expire values to IMS terminal or AGCF.
Wherein, also include after the step of CSCF sends Flushing success message：
The Expire values of the IMS terminal or AGCF in the Flushing success message, calculate hash described solid
Determine the refresh time next time of refresh cycle；
The IMS terminal or AGCF after next time refresh time reaches, to CSCF refresh requests next time are sent described.
Wherein, refresh time hash is included within the fixed refresh cycle and the step of sending refresh requests：
Expire values of the AGCF in the registration/subscription success message selects a random value to refresh week as fixed
Phase；
AGCF hashes the refresh time within the fixed refresh cycle according to the random value；
After the refresh time is reached, AGCF to CSCF sends refresh registration/subscription request.
According to a further aspect in the invention, there is provided a kind of IP Multimedia System refresh registration/subscription load balancing
System, the system includes：
Server, for responding registration/subscription request that registration/subscription end sends, and returns to the registration/subscription end
Carry the registration/subscription success message of freshness value；
Registration/subscription end, for sending registration/subscribe to request to the server, and according to the registration/subscribe to successfully
The freshness value in message, by refresh time hash within the fixed refresh cycle, and when the refresh time is reached, to
The server initiates refresh requests.
Wherein, the server is CSCF, and the registration/subscription end is IMS terminal or AGCF；
The CSCF is used to obtain the effective persistent period Expire value hashings in the registration/subscription request newly
Freshness value so that IMS terminal or AGCF are hashed in fixed brush according to the first time refresh time that the new freshness value is calculated
In the new cycle；
The CSCF is additionally operable to after the refresh requests of the IMS terminal or AGCF are received, and arranges Expire values so that
IMS terminal or AGCF are equal to the fixed refresh cycle according to the refresh interval that the Expire values are calculated.
Wherein, the server is CSCF, and the registration/subscription end is AGCF；
The Expire values that the AGCF is used in the registration/subscription success message select a random value as solid
Determine the refresh cycle and the refresh time is hashed within the fixed refresh cycle according to the random value.
Compared with prior art, the beneficial effects of the present invention is：Compare concentration or initial in initial registration/subscription
Registration/subscription is concentrated in identical refresh cycle time section, while when the EXPIRE values in registration/subscription request are identical, will
Refresh time is hashed within the fixed refresh cycle, and when the refresh time is reached, and to server refresh requests are initiated, from
And ensure that the load balancing of IMS systems.
Description of the drawings
Fig. 1 is the stream in method that CSCF is leading refresh registration/subscription load balancing provided in an embodiment of the present invention
Cheng Tu；
Fig. 2 is the stream in method that AGCF is leading refresh registration/subscription load balancing provided in an embodiment of the present invention
Cheng Tu；
Fig. 3 is a kind of IP Multimedia System IMS refresh registrations/subscription load balancing that first embodiment of the invention is provided
System structure diagram；
Fig. 4 is a kind of IP Multimedia System IMS refresh registrations/subscription load balancing that second embodiment of the invention is provided
System structure diagram.
Specific embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that described below is excellent
Select embodiment to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
In view of prior art exist problem, the present invention propose one kind make in the ims network CSCF and AGCF refresh registrations/
The method for subscribing to load balancing, the method can be leading with CSCF, it is also possible to AGCF be leading.It is leading reality with CSCF
Now mode is：It is in initial registration/subscription request message to 200OK message when CSCF receives initial registration/subscription request
EXPIRE values do random hash, while when CSCF receives refresh registration/subscription, the EXPIRE in 200OK response messages is set to
Identical value.Refresh registration/subscription the load balancing of CSCF is so can ensure that, while can also make the refresh registration/subscription of AGCF
Duty ratio is average.With AGCF be it is leading be achieved in that, CSCF adopts existing procedure, i.e., the note that AGCF proxy users are initiated
EXPIRE values in volume request are all identical, and after initial registration success, AGCF is using random distribution algorithm first time refresh time
Hash within the identical refresh cycle, so as to reach the purpose for refreshing load balancing.
Fig. 1 is the stream in method that CSCF is leading refresh registration/subscription load balancing provided in an embodiment of the present invention
Cheng Tu, as shown in figure 1, the method comprising the steps of：
Step S101, IMS terminal or AGCF to CSCF sends initial registration/subscription request.
IMS terminal or AGCF register/subscription end, and CSCF is server.IMS terminal or AGCF send initial note to CSCF
Volume/subscription request is 200OK message, wherein, EXPIRE values are carried in 200OK message.
The EXPIRE values of Jing random hash are sent to IMS terminal or AGCF by step S102, CSCF.
It is that freshness value does random hash to the EXPIRE values in 200OK message when CSCF receives initial registration request, and
Ensure that the EXPIRE values after hash have the property that：IMS terminal or AGCF are according to this EXPIRE value and 3GPP proposed algorithm meters
The refresh interval for calculating is in i.e. fixed refresh cycle T of same refresh cycle.According to IMS specifications, if after hash
EXPIRE values it is less than the EXPIRE values in the request of initial registration/subscription, CSCF can directly return the response message of 200OK.
If the EXPIRE values after hash are bigger than the EXPIRE values in initial registration/subscription request, CSCF is needed by returning 423 message
Consult with IMS terminal or AGCF.Negotiations process is the normal process of IMS, is repeated no more here.Furthermore it is also possible to pass through engineering
Carry larger EXPIRE values to avoid EXPIRE negotiations processes in the registration request that configuration IMS terminal or AGCF send.
Step S103, IMS terminal or AGCF calculate first time refresh registration/subscription time.
IMS terminal or AGCF are received after 200OK message, and according to the EXPIRE values in 200OK and 3GPP algorithms first is calculated
The time of secondary refresh registration/subscription.Due to the EXPIRE values in 200OK be through hashing, and hash after
EXPIRE values ensure that the refreshing/hour of log-on for calculating is hashed within a fixed cycle T, therefore, IMS terminal or AGCF
First time refresh registration/subscription the time for calculating has been spread out, rather than concentrates on sometime point or a certain
In the of short duration time period.
Step S104, IMS terminal or AGCF initiate refresh registration/subscription request according to refresh time timing.
IMS terminal or AGCF send refresh registration/subscription when reaching first time refresh registration/subscription time to CSCF
Request is refresh requests.
Step S105, CSCF arranges EXPIRE values, and sends it to IMS terminal or AGCF.
When CSCF receives refresh registration/subscription request, the EXPIRE values in 200OK message are set to Tf, the Tf values tool
There is following characteristic：IMS terminal or AGCF are Tf and 3GPP proposed algorithm meters according to the EXPIRE values in refresh registration 200OK message
The refresh time next time for calculating is equal to fixed refreshing cycle T with the interval of last refresh time.
Step S106, IMS terminal or AGCF calculate refresh time next time.
IMS terminal or AGCF calculate next according to the EXPIRE values in refresh registration/subscription 200OK and 3GPP proposed algorithms
Secondary refresh time.Now, the refresh time that IMS terminal or AGCF are calculated should be equal to solid with the interval of last refresh time
Determine refresh cycle T.
Step S107, IMS terminal or AGCF initiate again refresh requests after the fixed refresh cycle.
After IMS terminal or AGCF latency period T, refresh registration/subscription request is initiated to CSCF again.
Step S108, CSCF execution steps S105.
Fig. 2 is the stream in method that AGCF is leading refresh registration/subscription load balancing provided in an embodiment of the present invention
Cheng Tu, as shown in Fig. 2 the method comprising the steps of：
Step S201, AGW gateways are registered on AGCF/subscribed to successfully.
Step S202, AGCF to CSCF sends initial registration/subscription request.
The user that AGCF is acted on behalf of under AGW gateways sends initial registration/subscription request to CSCF, and identical is carried in request
EXPIRE values.
Step S203, CSCF returns initial registration/subscription success message.
CSCF is received after initial registration/subscription request, returns 200OK registrations/subscription acknowledgement message, 200OK response messages
In carry identical EXPIRE value.Wherein, engineering configuration registration request in EXPIRE values in the tolerance interval of CSCF.
Step S204, AGCF calculates first time refresh time according to load balancing algorithms.
AGCF is received after the 200OK response messages of CSCF, does not adopt the algorithm that 3GPP recommends to calculate first time refresh time,
But a random value is taken within the EXPIRE cycles as first time refresh registration/subscription time interval, first time refresh time
The random value is added for current time.Now, AGCF scatter first time refresh time, so as to avoid registration/subscription
Refresh time is excessively concentrated.
Step S205, AGCF to CSCF sends refresh registration/subscription request.
After user's first time refresh registration time reaches, AGCF sends refresh registration/subscription request i.e. refreshing and asks to CSCF
Ask, EXPIRE values are carried in request.
Step S206, CSCF returns refresh registration success message.
CSCF returns the registration reply of refresh registration 200OK, and identical EXPIRE value is carried in response message.
Step S207, using 3GPP algorithms refresh time next time is calculated.
AGCF is received after the refresh registration/subscription 200OK response messages of CSCF, calculates next using the proposed algorithm of 3GPP
Secondary refresh time.
Step S208, AGCF to CSCF sends refresh registration/subscription request.
When refresh time next time is reached, AGCF to CSCF sends refresh registration/subscription request.
Step S209, CSCF execution steps S206.
Fig. 3 is a kind of IP Multimedia System IMS refresh registrations/subscription load balancing that first embodiment of the invention is provided
System structure diagram, as shown in figure 3, the system includes IMS terminal 1, AGCF2, CSCF3, the wherein He of IMS terminal 1
AGCF2 is registration/subscription end, and CSCF3 is server.
IMS terminal 1 or AGCF2 are used to send registration/subscribe to request to CSCF3, and are successfully disappeared according to the registration/subscribe to
The freshness value in breath, by refresh time hash within the fixed refresh cycle, and when the refresh time is reached, to
CSCF3 initiates refresh requests.
CSCF3 is used for registration/subscription request that response registration/subscription end sends, and takes to the registration/subscription end return
Registration with freshness value/subscription success message.When CSCF3 receives initial registration/subscription of IMS terminal 1 or AGCF2 and asks,
It is that freshness value does random hash to the EXPIRE values in 200OK message, and it is following special to ensure that the EXPIRE values after hashing have
Property：The refresh interval that IMS terminal 1 or AGCF2 are calculated according to this EXPIRE value and 3GPP proposed algorithms is in same brush
In new cycle T.When reaching first time refresh registration/subscription time, CSCF3 receives the refreshing that IMS terminal 1 or AGCF2 send
Registration/subscribe to after request, the EXPIRE values in 200OK message Tf is set to, and the Tf values have the property that：IMS terminal 1 or
AGCF2 is according to during the refreshing next time that the EXPIRE values in refresh registration 200OK message are that Tf and 3GPP proposed algorithms are calculated
Between be equal to the interval of last refresh time and fixed refresh cycle T.So, the refresh time of IMS terminal 1 or AGCF2 just by
It is dispersed in the fixed refresh cycle, so as to ensure that the stability of IMS systems.
Fig. 4 is a kind of IP Multimedia System IMS refresh registrations/subscription load balancing that second embodiment of the invention is provided
System structure diagram, as shown in figure 4, the system include AGW4, AGCF5, CSCF6, wherein AGCF5 be registration/subscribe to
End, CSCF6 is server.
AGW4 acts on behalf of narrow-band user and registers on AGCF5/subscribe to.
CSCF6 is used to respond the registration/subscription request of AGCF5 transmissions, and carries freshness value to AGCF5 returns
Registration/subscribe to success message.CSCF6 is received after initial registration/subscription request, returns 200OK response messages, and 200OK responses disappear
Identical EXPIRE value is carried in breath.
AGCF5 is used to send registration/subscription request to CSCF6, and according in the registration/subscription success message
Freshness value, refresh time is hashed within the fixed refresh cycle, and when the refresh time is reached, and initiates to brush to CSCF6
New request.AGCF5 is received after the registration/subscription 200OK response messages of CSCF6, does not adopt the algorithm that 3GPP recommends to calculate first
Secondary refresh time, but a random value is taken within the EXPIRE cycles as first time refresh registration/subscription time interval, first
Secondary refresh time is that current time adds the random value.Now, AGCF scatter first time refresh time, so as to avoid
Registration/subscription refresh time is excessively concentrated.When first time refresh time is reached, AGCF5 to CSCF6 sends registration/subscription brush
New request, CSCF6 to AGCF5 returns the registration reply of refresh registration 200OK, and identical EXPIRE value is carried in response message.
AGCF5 calculates refresh time next time using the proposed algorithm of 3GPP, and when refresh time next time is reached, AGCF5 is to CSCF6
Send refresh registration/subscription request next time.
In sum, the present invention solves refresh time ratio by the way that refresh time was hashed within the fixed refresh cycle
Refresh registration/unbalanced problem of subscription load is processed compared with CSCF and AGCF when concentrating, with having for guarantee IMS system stability
Beneficial effect.
Although being described in detail to the present invention above, the invention is not restricted to this, those skilled in the art of the present technique
Various modifications can be carried out with principle of the invention.Therefore, all modifications made according to the principle of the invention, all should be understood to
Fall into protection scope of the present invention.
Claims (10)
1. a kind of method of IP Multimedia System refresh registration/subscription load balancing, it is characterised in that methods described include with
Lower step：
Registration/subscription end in IP Multimedia System IMS sends registration/subscription request to server respectively；
The server according to the registration/subscription request, return to the registration/subscription end carry the registration of freshness value/
Subscribe to success message；
The freshness value of the registration/subscription end in the registration/subscription success message, by refresh time hash solid
In the fixed refresh cycle, and when the refresh time is reached, to the server refresh requests are initiated.
2. method according to claim 1, it is characterised in that the step of sending registration/subscribe to request is specially：It is described
IMS terminal or AGCF AGCF entities send registration/subscription request to CSCF CSCF entities.
3. method according to claim 1 and 2, it is characterised in that the step of server returns registration/subscribe to success message
Including：
CSCF CSCF obtains the effective persistent period Expire value hashings in the registration/subscription request
To new freshness value so that IMS terminal or AGCF AGCF are brushed according to the first time that the new freshness value is calculated
The new time was hashed within the fixed refresh cycle；
CSCF sends the registration/subscription success message for carrying new freshness value to IMS terminal or AGCF.
4. method according to claim 3, it is characterised in that refresh time hash is concurrent within the fixed refresh cycle
The step of sending refresh requests includes：
The described new freshness value of IMS terminal or AGCF in the registration/subscription success message hashes refresh time solid
In the fixed refresh cycle；
IMS terminal or AGCF send refresh requests after the refresh time reaches to CSCF.
5. method according to claim 4, it is characterised in that send to CSCF and also include after refresh requests step：
CSCF is received after the refresh requests, arranges Expire values so that IMS terminal or AGCF are calculated according to the Expire values
The refresh interval for going out is equal to the fixed refresh cycle；
CSCF sends the Flushing success message for carrying Expire values to IMS terminal or AGCF.
6. method according to claim 5, it is characterised in that also include after the step of CSCF sends Flushing success message：
The Expire values of the IMS terminal or AGCF in the Flushing success message, calculate hash in the fixed brush
The refresh time next time in new cycle；
The IMS terminal or AGCF after next time refresh time reaches, to CSCF refresh requests next time are sent described.
7. method according to claim 1, it is characterised in that refresh time hash is concurrent within the fixed refresh cycle
The step of sending refresh requests includes：
Expire values of the AGCF AGCF in the registration/subscription success message selects a random value to make
For the fixed refresh cycle；
AGCF hashes the refresh time within the fixed refresh cycle according to the random value；
After the refresh time is reached, AGCF to CSCF CSCF sends refresh registration/subscription request.
8. a kind of system of IP Multimedia System refresh registration/subscription load balancing, it is characterised in that the system includes：
Server, carries for responding registration/subscription request that registration/subscription end sends, and returning to the registration/subscription end
There is the registration/subscription success message of freshness value；
Registration/subscription end, for sending registration/subscription request to the server, and according to the registration/subscription success message
In the freshness value, refresh time was hashed within the fixed refresh cycle, and when the refresh time is reached, to described
Server initiates refresh requests.
9. system according to claim 8, it is characterised in that
The server is CSCF CSCF, and the registration/subscription end is IMS terminal or access gateway control work(
Can AGCF；
The CSCF is used to newly be refreshed the effective persistent period Expire value hashings in the registration/subscription request
Value so that IMS terminal or AGCF are hashed in fixed refreshing week according to the first time refresh time that the new freshness value is calculated
In phase；
The CSCF is additionally operable to after the refresh requests of the IMS terminal or AGCF are received, and arranges Expire values so that IMS ends
End or AGCF are equal to the fixed refresh cycle according to the refresh interval that the Expire values are calculated.
10. system according to claim 8, it is characterised in that
The server is CSCF CSCF, and the registration/subscription end is AGCF AGCF；
The Expire values that the AGCF is used in the registration/subscription success message select a random value as fixed brush
The new cycle simultaneously hashes the refresh time within the fixed refresh cycle according to the random value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110276004.9A CN102325141B (en) | 2011-09-16 | 2011-09-16 | Method for balancing registration/subscription refreshing load of internet protocol (IP) multimedia sub-system and system |
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| CN201110276004.9A CN102325141B (en) | 2011-09-16 | 2011-09-16 | Method for balancing registration/subscription refreshing load of internet protocol (IP) multimedia sub-system and system |
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| CN102325141B true CN102325141B (en) | 2017-05-10 |
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| CN113038507B (en) * | 2019-11-28 | 2023-05-19 | 华为技术有限公司 | IMS registration duration management system and terminal equipment |
| CN112954790B (en) * | 2019-12-11 | 2023-04-18 | 中国电信股份有限公司 | Self-registration method and device and computer storage medium |
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