CN104052675A - Method, system, SBC and AS for realizing SBC overload control - Google Patents
Method, system, SBC and AS for realizing SBC overload control Download PDFInfo
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- CN104052675A CN104052675A CN201310079250.4A CN201310079250A CN104052675A CN 104052675 A CN104052675 A CN 104052675A CN 201310079250 A CN201310079250 A CN 201310079250A CN 104052675 A CN104052675 A CN 104052675A
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Abstract
The invention provides a method, system, SBC and AS for realizing session border controller (SBC) overload control. The method comprises a home-terminal SBC detects whether the SBC itself overloads, and if so, obtains media optimization session information from the AS, the media optimization session information comprising corresponding session and session both-side terminal information through the directly-connectable service of the home-terminal SBC; and the home-terminal SBC determines the session which can realize media direct connection in the media optimization session information according to the session both-side terminal information, and indicates the AS to initiate session re-negotiation for media direct connection for the session which can realize media direct connection. According to the method, system, SBC and AS for realizing the SBC overload control, the SBC overload control can be realized, and meanwhile, the number of users of the SBC service can be guaranteed.
Description
Technical field
The present invention relates to core network technology field, relate in particular to one and realize method, system, SBC and the application server (AS, Application Server) that Session Border Controller (SBC, Session Border Controller) overload is controlled.
Background technology
SBC is as the signaling of IP Multimedia System (IMS, IP Multimedia Subsystem) and the entrance of media, and by causing, two communication mediums between IMS client are roundabout.
If Fig. 1 is the controlling mechanism schematic diagram of SBC to signaling and media in prior art.In Fig. 1, UE sends request to SBC, in the time that the load of SBC does not exceed predefined load-threshold, accepts the request of this UE, for this UE provides the agency of medium surface; In the time that the load of SBC exceedes predefined load-threshold, directly refuse the request of this UE.Visible, existing SBC overload control mode is to take the mode of " blocking up " in essence.But under actual conditions, have some business (such as, the group service of enterprise, school, household internal) only need in local network, realize exchange of media and may be not need government's Lawful Interception, the Media Stream of this class business SBC that do not need to detour is upper, but it is direct-connected between UE, to carry out media; But the SBC of overload itself does not need its agency's request directly to refuse this part, causes the minimizing of SBC number of service subscribers.
Summary of the invention
The invention provides method, system, SBC and AS that a kind of SBC of realization overload is controlled, can be in the situation that SBC transships, can realize the direct-connected session of media is shifted out from this SBC, directly between terminal, transmit, thereby ensure SBC number of service subscribers in realizing the control of SBC overload.
Technical scheme of the present invention is achieved in that
One realizes the method that Session Border Controller (SBC) overload is controlled, and comprising:
Whether local terminal SBC detects and self transships, and if so, obtains media optimization session information from AS, and described media optimization session information comprises by can the direct-connected business corresponding session of described local terminal SBC and the information of session both sides terminal;
Local terminal SBC determines in described media optimization session information and can realize the direct-connected session of media according to the information of described session both sides terminal, indicates AS heavily to consult for the direct-connected session of media the described direct-connected session setup of media of can realizing.
Realize the system that SBC overload is controlled, comprising:
Whether local terminal SBC, transship for detection of self, if so, obtains media optimization session information from AS, and described media optimization session information comprises by can the direct-connected business corresponding session of described local terminal SBC and the information of session both sides terminal; Determine in described media optimization session information and can realize the direct-connected session of media according to the information of described session both sides terminal, instruction AS heavily consults for the direct-connected session of media the described direct-connected session setup of media of can realizing;
AS, for providing described media optimization session information to local terminal SBC; Also for heavily consulting for the direct-connected session of media realizing the direct-connected session setup of media according to the instruction of local terminal SBC.
Realize the SBC that SBC overload is controlled, comprising:
Load detecting triggers the direct-connected functional module of media, whether transship for detection of described SBC, if so, obtain media optimization session information from AS, described media optimization session information comprises by can the direct-connected business corresponding session of described SBC and the information of session both sides terminal;
The direct-connected session selection function of media module, for determining that according to the information of described session both sides terminal described media optimization session information can realize the direct-connected session of media, instruction AS heavily consults for the direct-connected session of media the described direct-connected session setup of media of can realizing.
Realize the AS that SBC overload is controlled, comprising:
Direct-connected business screening function module, for according to the requirement of SBC, provides media optimization session information to described SBC, and described media optimization session information comprises by can the direct-connected business corresponding session of described SBC and the information of session both sides terminal;
The heavy negotiation functionality module of session, for according to SBC instruction, heavily consults for the direct-connected session of media realizing the direct-connected session setup of media.
Visible, what the present invention proposed realizes method, system, SBC and the AS that SBC overload is controlled, can be in the situation that SBC transships, filter out and can realize the direct-connected session of media by this SBC, by AS, these session setups are heavily consulted for the direct-connected session of media, make the Media Stream of process overload SBC originally not need to transmit through this SBC again, thereby ensure SBC number of service subscribers in realizing the control of SBC overload.
Brief description of the drawings
Fig. 1 is the controlling mechanism schematic diagram of SBC to signaling and media in prior art;
Fig. 2 is the method flow diagram of realizing the control of SBC overload that the present invention proposes;
Fig. 3 is the realization flow figure of the embodiment of the present invention one;
Fig. 4 is the realization flow figure of the embodiment of the present invention two;
Fig. 5 is the system configuration schematic diagram of realizing the control of SBC overload that the present invention proposes;
Fig. 6 is the SBC structural representation of realizing the control of SBC overload that the present invention proposes;
Fig. 7 is the AS structural representation of realizing the control of SBC overload that the present invention proposes.
Embodiment
The present invention proposes a kind of method and realizes the method that SBC overload is controlled, and if Fig. 2 is the method realization flow figure, comprising:
Step 201: whether local terminal SBC detects and self transship, and if so, obtains media optimization session information from AS, and described media optimization session information comprises by can the direct-connected business corresponding session of described local terminal SBC and the information of session both sides terminal;
Step 202: local terminal SBC determines in described media optimization session information and can realize the direct-connected session of media according to the information of described session both sides terminal, indicates AS heavily to consult for the direct-connected session of media the described direct-connected session setup of media of can realizing.
In above-mentioned steps 202, local terminal SBC determines that the mode that can realize the direct-connected session of media is specifically as follows:
If the address of session both sides terminal belongs to same IP address field, determine that this session can realize media direct-connected; Or,
If session both sides terminal belongs to consolidated network address transition (NAT, Network Address Translation) equipment, determine that this session can realize media direct-connected; Or,
If session both sides terminal is stopped by fire compartment wall, determine that this session can not realize media direct-connected.
After above-mentioned steps 202, may further include:
Can realize opposite end SBC that the direct-connected session of media relates to and receive heavily consulting for the direct-connected session of media that AS initiates, it is direct-connected whether the subordinate terminal that judgement relates to described session can adopt terminal address to carry out, if it is direct-connected of course, to adopt described terminal address to carry out media; Otherwise, adopt the address of described opposite end SBC to connect.
Below in conjunction with accompanying drawing, lift specific embodiment the present invention is described in detail.
Embodiment mono-:
If Fig. 3 is the realization flow figure of embodiment mono-.Comprise the following steps:
Step 301:SBC-1 detects that self load is overweight, exceedes high capacity warning value.
Step 302:SBC-1 obtains media optimization session information from AS, comprises by can the direct-connected business corresponding session of SBC-1 and the information of session both sides terminal.
Step 303:SBC-1 judges according to the information of session both sides terminal, filters out in media optimization session information and can realize the direct-connected session of media.
The concrete mode wherein judging and screen can be:
If the address of session both sides terminal belongs to same IP address field, determine that this session can realize media direct-connected; Or,
If session both sides terminal belongs to same NAT device, determine that this session can realize media direct-connected; Or,
If session both sides terminal is stopped by fire compartment wall, determine that this session can not realize media direct-connected.
Step 304a:SBC-1 instruction AS heavily consults for the session setup session filtering out, direct-connected for realizing media.
SBC-2 and the SBC-n of step 304b:AS instruction opposite end heavily consult for the session setup session filtering out, direct-connected for realizing media.
Step 305a and 305b:AS and relevant SBC heavily consult the session setup session filtering out.SBC-2 and SBC-n screen and obtain adopting terminal address direct-connected and need the session of SBC direct-connected (can not adopt terminal address direct-connected) session.In the present embodiment, the terminal address that filters out UE-3 can not be used for direct-connected, and the terminal address of UE-m can be for direct-connected.
Between step 306:UE-1 and UE-2, realize media direct-connected; Between UE-2 and UE-m, realize media direct-connected; UE-1 and UE-3, without SBC-1, only connect by SBC-2.
By said process, realize and can realize media direct-connected sessions and shift from the SBC-1 of overload, the load of reduction SBC-1 has ensured the number of users that SBC-1 serves simultaneously.
Embodiment bis-:
If Fig. 4 is the realization flow figure of the embodiment of the present invention two.In Fig. 4, the UE-1 of local terminal network is connected with SBC-1, and the UE-m of opposite end network is connected with SBC-n.Under initial condition, the Media Stream between UE-1 and UE-m is through SBC-1 and SBC-n.
Step 401:SBC-1 detects self overload.
Step 402:SBC-1 from AS obtain through SBC-1 can session list corresponding to direct-connected business, this list comprise can be direct-connected session and the address information of session both sides UE.Wherein, because UE is by SBC Full Proxy, therefore the address information of UE comprises that address information and the SBC of the SBC of this UE connection are the port information that this UE distributes.
Step 403:SBC-1 judges by the address information of session both sides UE, filters out and can realize the direct-connected session of media between UE according to judged result.In the present embodiment, the session filtering out is the session between UE-1 and UE-m.
Step 404:SBC-1 instruction AS heavily consults the session setup session filtering out.
Step 405:AS instruction SBC-n heavily consults the session through SBC-1 and SBC-n in the session filtering out (being the session between UE-1 and UE-m in the present embodiment) initiation session.
Step 406:SBC-n judges by the address information of session both sides UE, filters out and can realize the direct-connected session of media between UE according to judged result.
Step 407～step 410:AS heavily consults to SBC-1 end initiation session, and UE-1 feeds back to SBC-1 by 200OK message by the IP address of self, and the IP address of UE-1 is fed back to AS by SBC-1, direct-connected for realizing media.
Step 411～413:AS heavily consults to SBC-n end initiation session, and UE-m feeds back to SBC-n by 200OK message by the IP address of self.
If in above-mentioned steps 406, SBC-n judges the address of UE-m can, for direct-connected, continue execution step 414a and step 415a; Otherwise, continue execution step 414b and step 415b.
Step 414a: because the address of judging UE-m can be for direct-connected, SBC-n is the IP address to AS feedback UE-m by 200OK message, direct-connected for realizing media.
Between step 415a:UE-1 and UE-m, realize media direct-connected.Finish current flow process.
Step 414b: can not be used for direct-connectedly owing to judging the address of UE-m, SBC-n is the IP address to AS feedback SBC-n by 200OK message.
Media Stream between step 415b:UE-1 and UE-m connects through SBC-n.
Through said process, to between UE-1 and UE-m, be shifted out from SBC-1 through the Media Stream of SBC-1 and SBC-n transmission, thereby both avoided the load of SBC-1 overweight, do not affect again the business transmission between UE-1 and UE-m, save Internet resources, and ensured the number of users of SBC service.
The present invention also proposes the system that a kind of SBC of realization overload is controlled, and if Fig. 5 is this system configuration schematic diagram, comprising:
Whether local terminal SBC501, transship for detection of self, if so, obtains media optimization session information from AS502, and described media optimization session information comprises by can the direct-connected business corresponding session of described local terminal SBC501 and the information of session both sides terminal; Determine in described media optimization session information and can realize the direct-connected session of media according to the information of described session both sides terminal, instruction AS502 heavily consults for the direct-connected session of media the described direct-connected session setup of media of can realizing;
AS502, for providing described media optimization session information to local terminal SBC501; Also for heavily consulting for the direct-connected session of media realizing the direct-connected session setup of media according to the instruction of local terminal SBC501.
In said system, local terminal SBC501 determines that the mode that can realize the direct-connected session of media is specifically as follows:
If the address of session both sides terminal belongs to same IP address field, determine that this session can realize media direct-connected; Or,
If session both sides terminal belongs to same NAT device, determine that this session can realize media direct-connected; Or,
If session both sides terminal is stopped by fire compartment wall, determine that this session can not realize media direct-connected.
Said system may further include:
Opposite end SBC503, described opposite end SBC describedly can realize the SBC that the direct-connected session of media relates to, described opposite end SBC503 receives heavily consulting for the direct-connected session of media of AS502 initiation, it is direct-connected whether the subordinate terminal that judgement relates to described session can adopt terminal address to carry out, if it is direct-connected of course, to adopt described terminal address to carry out media; Otherwise, adopt the address of described opposite end SBC to connect.
The present invention also proposes the SBC that a kind of SBC of realization overload is controlled, and as the structural scheme of mechanism that Fig. 6 is this SBC, comprising:
Load detecting triggers the direct-connected functional module 601 of media, whether transship for detection of described SBC, if so, obtain media optimization session information from AS, described media optimization session information comprises by can the direct-connected business corresponding session of described SBC and the information of session both sides terminal;
The direct-connected session selection function of media module 602, for determining that according to the information of described session both sides terminal described media optimization session information can realize the direct-connected session of media, instruction AS heavily consults for the direct-connected session of media the described direct-connected session setup of media of can realizing.
In above-mentioned SBC, the direct-connected session selection function of media module 602 determines that the mode that can realize the direct-connected session of media is specifically as follows:
If the address of session both sides terminal belongs to same IP address field, determine that this session can realize media direct-connected; Or,
If session both sides terminal belongs to same NAT device, determine that this session can realize media direct-connected; Or,
If session both sides terminal is stopped by fire compartment wall, determine that this session can not realize media direct-connected.
Above-mentioned SBC can also comprise:
Direct-connected functional module 603, for receiving heavily consulting for the direct-connected session of media that AS initiates, it is direct-connected whether the subordinate terminal that judgement relates to described session can adopt terminal address to carry out, if can, adopt described terminal address to carry out media direct-connected; Otherwise, adopt the address of described SBC to connect.
The present invention also proposes the AS that a kind of SBC of realization overload is controlled, and as the structural representation that Fig. 7 is this AS, comprising:
Direct-connected business screening function module 701, for according to the requirement of SBC, provides media optimization session information to described SBC, and described media optimization session information comprises by can the direct-connected business corresponding session of described SBC and the information of session both sides terminal;
The heavy negotiation functionality module 702 of session, for according to SBC instruction, heavily consults for the direct-connected session of media realizing the direct-connected session setup of media.
As fully visible, what the present invention proposed realizes method, system, SBC and the AS that SBC overload is controlled, can be by the situation that SBC transships, filter out and can realize the direct-connected session of media by this SBC, by AS, these session setups are heavily consulted for the direct-connected session of media, making does not need to transmit through this SBC through the Media Stream of overload SBC originally again, thereby not only solves SBC overload problem but also ensured SBC number of service subscribers.The present invention adopts the method for dredging compared with existing SBC overload solution, can further ensure the number of users of SBC service, is a kind of more actively desirable mode.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (10)
1. realize the method that Session Border Controller SBC overload is controlled, it is characterized in that, described method comprises:
Whether local terminal SBC detects and self transships, and if so, obtains media optimization session information from AS, and described media optimization session information comprises by can the direct-connected business corresponding session of described local terminal SBC and the information of session both sides terminal;
Local terminal SBC determines in described media optimization session information and can realize the direct-connected session of media according to the information of described session both sides terminal, indicates AS heavily to consult for the direct-connected session of media the described direct-connected session setup of media of can realizing.
2. method according to claim 1, is characterized in that, described local terminal SBC determines that the mode that can realize the direct-connected session of media is:
If the address of session both sides terminal belongs to same IP address field, determine that this session can realize media direct-connected; Or,
If session both sides terminal belongs to consolidated network address transition NAT device, determine that this session can realize media direct-connected; Or,
If session both sides terminal is stopped by fire compartment wall, determine that this session can not realize media direct-connected.
3. method according to claim 1 and 2, is characterized in that, described method further comprises:
Can realize opposite end SBC that the direct-connected session of media relates to and receive heavily consulting for the direct-connected session of media that AS initiates, it is direct-connected whether the subordinate terminal that judgement relates to described session can adopt terminal address to carry out, if it is direct-connected of course, to adopt described terminal address to carry out media; Otherwise, adopt the address of described opposite end SBC to connect.
4. realize the system that SBC overload is controlled, it is characterized in that, described system comprises:
Whether local terminal SBC, transship for detection of self, if so, obtains media optimization session information from AS, and described media optimization session information comprises by can the direct-connected business corresponding session of described local terminal SBC and the information of session both sides terminal; Determine in described media optimization session information and can realize the direct-connected session of media according to the information of described session both sides terminal, instruction AS heavily consults for the direct-connected session of media the described direct-connected session setup of media of can realizing;
AS, for providing described media optimization session information to local terminal SBC; Also for heavily consulting for the direct-connected session of media realizing the direct-connected session setup of media according to the instruction of local terminal SBC.
5. system according to claim 4, is characterized in that, described local terminal SBC determines that the mode that can realize the direct-connected session of media is:
If the address of session both sides terminal belongs to same IP address field, determine that this session can realize media direct-connected; Or,
If session both sides terminal belongs to same NAT device, determine that this session can realize media direct-connected; Or,
If session both sides terminal is stopped by fire compartment wall, determine that this session can not realize media direct-connected.
6. according to the system described in claim 4 or 5, it is characterized in that, described system further comprises:
Opposite end SBC, described opposite end SBC describedly can realize the SBC that the direct-connected session of media relates to, described opposite end SBC receives heavily consulting for the direct-connected session of media of AS initiation, it is direct-connected whether the subordinate terminal that judgement relates to described session can adopt terminal address to carry out, if it is direct-connected of course, to adopt described terminal address to carry out media; Otherwise, adopt the address of described opposite end SBC to connect.
7. realize the SBC that SBC overload is controlled, it is characterized in that, described SBC comprises:
Load detecting triggers the direct-connected functional module of media, whether transship for detection of described SBC, if so, obtain media optimization session information from AS, described media optimization session information comprises by can the direct-connected business corresponding session of described SBC and the information of session both sides terminal;
The direct-connected session selection function of media module, for determining that according to the information of described session both sides terminal described media optimization session information can realize the direct-connected session of media, instruction AS heavily consults for the direct-connected session of media the described direct-connected session setup of media of can realizing.
8. SBC according to claim 7, is characterized in that, the direct-connected session selection function of described media module determines that the mode that can realize the direct-connected session of media is:
If the address of session both sides terminal belongs to same IP address field, determine that this session can realize media direct-connected; Or,
If session both sides terminal belongs to same NAT device, determine that this session can realize media direct-connected; Or,
If session both sides terminal is stopped by fire compartment wall, determine that this session can not realize media direct-connected.
9. according to the SBC described in claim 7 or 8, it is characterized in that, described SBC also comprises:
Direct-connected functional module, for receiving heavily consulting for the direct-connected session of media that AS initiates, it is direct-connected whether the subordinate terminal that judgement relates to described session can adopt terminal address to carry out, if can, adopt described terminal address to carry out media direct-connected; Otherwise, adopt the address of described SBC to connect.
10. realize the AS that SBC overload is controlled, it is characterized in that, described AS comprises:
Direct-connected business screening function module, for according to the requirement of SBC, provides media optimization session information to described SBC, and described media optimization session information comprises by can the direct-connected business corresponding session of described SBC and the information of session both sides terminal;
The heavy negotiation functionality module of session, for according to SBC instruction, heavily consults for the direct-connected session of media realizing the direct-connected session setup of media.
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