CN101448240A - Registration method, system and equipment of session initiation protocol terminal - Google Patents
Registration method, system and equipment of session initiation protocol terminal Download PDFInfo
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- CN101448240A CN101448240A CNA2008102410414A CN200810241041A CN101448240A CN 101448240 A CN101448240 A CN 101448240A CN A2008102410414 A CNA2008102410414 A CN A2008102410414A CN 200810241041 A CN200810241041 A CN 200810241041A CN 101448240 A CN101448240 A CN 101448240A
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Abstract
The invention relates to the communication field, in particular to a registration technology of session initiation protocol (SIP) terminal. The invention discloses a registration method and a system of the SIP terminal, for solving the possible problem of SBC load unbalance in the prior SIP terminal registration scheme so as to enhance the controllability and the security of the SIP terminal accessed to the IMS network. The SIP terminal registration method comprises the following steps: transmitting a registration message to session distribution equipment by the SIP terminal according to position information of the configured session distribution equipment; determining SBC for providing service for the SIP terminal according to the resource occupation information of each administrated SBC after the session distribution equipment receives the registration message, and returning a re-orientation message to the SIP terminal, wherein the redirection message carries the IP address of the determined SBC; and re-orientating the SIP terminal registered to the SBC indicated by the IP address according to the received re-orientation message.
Description
Technical field
The present invention relates to the communications field, relate in particular to the registration technology of a kind of initial session protocol (SIP) terminal.
Background technology
IMS (IP Multimedia Subsystem, IP Multimedia System) is 3GPP (3rd GenerationPartnership Project, 3G (Third Generation) Moblie standardization body) standards system that is independent of access technology support IP multimedia service that proposes at the R5 version, IMS is based on SIP (Session Initiation Protocol, initial session protocol) system is used SIP to call out controlling mechanism and is set up, manages and stop various multimedia services.SIP is IETF (Internet Engineering Task Force, internet engineering task group) part of standard process, it is text based signaling control protocol by client/server approach work, be used to set up, revise and stop the Multimedia session between the message user on the IP network, wherein, Multimedia session comprises the Internet multimedia conferencing, the call on the IP network, multimedia issue etc.
IMS is the essential step that provides system to stride forward to the all-IP business for the multimedia service in future provides a general-purpose platform.Under the development trend of the network integration, 3GPP, ETSI (EuropeanTelecommunications Standards Institute, ETSI European Telecommunications Standards Institute) and ITU-T (International Telecommunication Union-Telecommunication standardizationsector, international telecommunication union telecommunication's standardization group) all in the network integration scheme of research based on IMS, purpose is to make IMS become general-purpose platform based on SIP, support plurality of access modes fixing and that move simultaneously, realize the fusion of fixed network and mobile network.
Sip terminal is based on the subscriber terminal equipment of SIP, be used for creating and the managing SIP session, because IMS is independent of access technology, mobile phone, multimedia handheld device, PC (Personal Computer, PC), PDA (Personal Digital Assistant, personal digital assistant) etc. can be used as sip terminal and inserts the IMS network.In the prior art, sip terminal disposes SBC (Session Border Controller, Session Border Controller) IP (Internet Protocol, Internet Protocol) address, sip terminal is powering on when maybe needing to re-register, IP address according to the SBC that disposes, send registration message to this SBC, request inserts the IMS network, and SBC is returning success message by the back to it to the sip terminal authentication, indicate this sip terminal to insert the IMS network, so far the SIM endpoint registration is finished.Existing sip terminal registration scenarios all has higher requirements to load capacity and the disposal ability of SBC, and the SBC unbalanced problem of loading may occur, and it is lower to make that sip terminal inserts the controllability and the fail safe of IMS network, thereby has limited popularization and the expansion of IMS.If the IP address of two of configurations or more SBC then can expose more service device address in sip terminal, make simultaneously the switching flow complexity can not effectively strengthen controllability and fail safe that sip terminal inserts the IMS network.
Summary of the invention
The invention provides a kind of register method and system of session initiation protocol terminal, in order to solve Session Border Controller SBC that existing initial session protocol sip terminal registration scenarios may the occur unbalanced problem of loading, strengthen controllability and fail safe that sip terminal inserts the IMS network.
Accordingly, the present invention also provides a kind of session distributing equipment.
The register method of session initiation protocol terminal provided by the invention comprises:
The initial session protocol sip terminal sends registration message according to the positional information of the session distributing equipment of configuration to described session distributing equipment;
Described session distributing equipment is after receiving registration message, resource occupation information according to each the Session Border Controller SBC that is administered, be defined as sip terminal the SBC of service is provided, and return redirect message, wherein carry the Internet Protocol IP address of the SBC that determines to described sip terminal;
Described sip terminal is redirected the SBC that is registered to the indication of described IP address according to the redirect message that receives.
The Accreditation System of session initiation protocol terminal provided by the invention comprises Session Border Controller SBC and initial session protocol sip terminal, also comprises the session distributing equipment of administering a plurality of SBC, wherein:
Described sip terminal is used for the positional information according to the session distributing equipment of configuration, sends registration message to described session distributing equipment, and according to the redirect message that described session distributing equipment returns, is redirected the SBC that is registered to the indication of IP address;
Described session distributing equipment, be used for behind the registration message that receives described sip terminal transmission, resource occupation information according to each SBC that is administered, being defined as sip terminal provides the SBC of service, and return redirect message to described sip terminal, wherein carry the Internet Protocol IP address of the SBC that determines.
Session distributing equipment provided by the invention comprises:
Memory cell: the resource occupation information that is used to store each the Session Border Controller SBC that is administered;
Receiving element: be used to receive the registration message that the initial session protocol sip terminal sends;
Determining unit: be used for after receiving described registration message,, be defined as the SBC that sip terminal provides service according to the resource occupation information of each SBC that is administered;
Transmitting element: be used for returning redirect message, wherein carry the Internet Protocol IP address of the SBC that determines to described sip terminal.
The register method of sip terminal provided by the invention and system, the SBC that may occur at the existing sip terminal registration scenarios unbalanced problem of loading, the positional information of configuration session distributing equipment in sip terminal in advance, positional information according to configuration sends registration message to the session distributing equipment to sip terminal when maybe needing to re-register powering on, the session distributing equipment is defined as the SBC that sip terminal provides service according to the resource occupation information of each SBC that is administered, thereby the load capacity of each SBC in can balanced IMS network, and guarantee that the SBC determine is current and can insert sip terminal, reduced requirement to load capacity and the disposal ability of SBC; The session distributing equipment returns redirect message, carry the IP address of the SBC that determines, sip terminal is redirected being registered to the SBC that determines according to the redirect message that receives, the controllability and the fail safe of sip terminal access IMS network have been strengthened, for solid foundation has been laid in popularization and the expansion of IMS.
Description of drawings
Fig. 1 is the register method flow chart of sip terminal in the embodiment of the invention;
Fig. 2 is the Accreditation System block diagram of sip terminal in the embodiment of the invention;
Fig. 3 is a kind of possibility structured flowchart of SR equipment in the embodiment of the invention;
Fig. 4 is a kind of what's new cellular construction block diagram of SR equipment in the embodiment of the invention;
Fig. 5 is the another kind of what's new cellular construction block diagram of SR equipment in the embodiment of the invention;
Fig. 6 is the network architecture diagram of IMS in the embodiment of the invention.
Embodiment
The SBC that the embodiment of the invention may occur at the existing sip terminal registration scenarios unbalanced problem of loading, a kind of register method of sip terminal is provided, in order to the load capacity of each SBC in the balanced IMS network, strengthen controllability and fail safe that sip terminal inserts the IMS network.The embodiment of the invention is newly-increased SR (Session Router session distribution) equipment in the IMS system, and each SR equipment is administered a plurality of SBC; In advance sip terminal is configured, the positional information of SR equipment is revised as in the IP address of the SBC that disposes in the existing sip terminal, make sip terminal when powering on or need re-register, send registration message to SR equipment according to the positional information of configuration; Simultaneously SR equipment is configured, make SR equipment after receiving the registration message of sip terminal, occupation condition according to each SBC that is administered, being defined as sip terminal provides the SBC of service and notifies sip terminal by redirect message, sip terminal is that retargetable is registered to corresponding SBC according to redirect message, thereby inserts the IMS network.
At first analyze redirect message based on SIP.Existing SIP has defined 302Moved Temporarily message and the 305 Use Proxy message with redirection function.Wherein, 302 Moved Temporarily message are represented number or address temporary changes, and 305 Use Proxy message represent that needs use the acting server of appointment.With reference to RFC3261, if sip terminal receives 302 Moved Temporarily message, then the Contact head of 302 Moved Temporarily message will be replaced the Request URI (Request Uniform Resource Identifier, request unified resource identifier) in the message that sip terminal resends.If sip terminal Request URI in the registration message that SR sends adopts the form of IP address or Zhang Hao @IP address, then SR equipment can carry the IP address of the SBC that determines in the Contact head of 302 Moved Temporarily message, in this case, when sip terminal is redirected registration according to 302 MovedTemporarily message, can be addressed to this SBC according to the IP address right in the Contact head.But, if sip terminal mails to the form that Request URI in the registration message of SR equipment adopts domain name, because the SBC among the IMS does not have domain name, each SBC is that the form with the IP address exists on SR equipment, then SR equipment can't provide the Contact head of 302 Moved Temporarily message, SR equipment can not carry SBC in the Contact head of the 302 Moved Temporarily message of returning domain name because form does not match.Need to prove, even the SBC among the IMS has domain name, SR equipment can not carry SBC in the Contact of the 302 Moved Temporarily message of returning domain name, because the Request URI in the registration message that sip terminal sends is CN (Core Network, core net) domain name can not be replaced by the domain name of SBC.With reference to RFC3261, carry the IP address of Proxy (acting server) in the Contact head of 305 Use Proxy message, the message that sip terminal sends needs according to the 305 Use Proxy message that receive resends the Proxy that points to this IP address and gets final product, and message itself does not need to change, and just in time meets the demands.By protocal analysis, redirect message adopts 305 Use Proxy message in the embodiment of the invention.
As shown in Figure 1, the register method of the sip terminal that the embodiment of the invention provides needs the positional information of configuration SR equipment in sip terminal in advance, and sip terminal powers on or need re-register the time, comprises step:
S101, sip terminal send REGISTER (registration) message according to the positional information of the SR equipment of configuration to this SR equipment;
S102, SR equipment according to the resource occupation information of each SBC that is administered, are defined as the SBC that sip terminal provides service after receiving REGISTER message;
S103, SR equipment return redirect message to sip terminal, wherein carry the IP address of the SBC that determines;
Redirect message is specially 305 Use Proxy message, and the IP address of the SBC that determines is carried in the Contact head of 305 Use Proxy message;
S104, sip terminal resend REGISTER message according to the redirect message that receives to the SBC of IP address indication;
The REGISTER message that sip terminal sends among the REGISTER message that sip terminal resends in S104 and the S101 is that destination address is different, and message itself can not change;
When S105, SBC do not carry the authentication header information in the REGISTER message that receives, return 401 Unauthorsized (unauthorized) message to sip terminal;
Because general commercial system all can be opened the register and authentication function, so when SBC does not carry the authentication header information in the REGISTER message that sip terminal sends, can return 401Unauthorsized message, indication need be carried out authentication to it;
S106, sip terminal send REGISTER message according to the 401 Unauthorized message that receive once more to SBC, wherein carry the authentication header information;
When S107, SBC carry the authentication header information in the REGISTER message that receives, according to the authentication header information sip terminal is carried out authentication, and return 200 OKs (success) message by the back to sip terminal in authentication, the indication sip terminal has inserted the IMS network;
If sip terminal is according to redirect message among the S104, in the REGISTER message that SBC resends, carry the authentication header information, then S105 and S106 need not to carry out, and directly carry out S107 and get final product.
Sip terminal learns that registration finishes after receiving the 200 OK message that SBC returns, inserted the IMS network, and follow-up all message all send to this SBC, and miscellaneous service provides by this SBC, and after this sip terminal and SR equipment no longer include interacting message.
In S101, the positional information of SR equipment can be the IP address of SR equipment, if disposed the IP address of SR equipment in sip terminal, then sip terminal is according to the IP address of the SR equipment of configuration, be addressed directly to SR equipment, to the SR equipment transmission REGISTER of this IP address indication message;
The positional information of SR equipment also can be the domain-name information of SR equipment, if in sip terminal, disposed the domain-name information of SR equipment, then sip terminal is according to the domain-name information of the SR equipment of configuration, inquiry DNS (Domain Name Server, domain name resolution server), obtain the IP address of this SR equipment, and according to the IP addressing of address that gets access to SR equipment, send REGISTER message to the SR equipment of IP address indication.
In S102, SR equipment need obtain the resource occupation information of each SBC that is administered in advance, the method that SR equipment obtains the resource occupation information of each SBC can have multiple, and for example SR equipment sends request to each SBC that is administered, and carries current resource occupation information by SBC in response; Perhaps SBC periodically initiatively reports current resource occupation information to the SR that is belonged to; Perhaps SBC reports current resource occupation information when resource occupation change in information amount surpasses setting threshold; Or the like.Adopt SBC periodically initiatively to report the mode of current resource occupation information, can realize, help the pressure that balanced SBC reports current resource occupation information to cause to system by configuration timer in SBC.Because the design load capacity of SBC generally can be a bit larger tham actual full load capacity, so each SBC does not need frequently to report current resource occupation information yet.
Wherein a kind of SR equipment obtains the method for resource occupation information, comprising:
SR equipment sends the intercommunication request to each SBC that administers successively;
Each SBC returns the intercommunication response according to the intercommunication request that receives to SR equipment, wherein carries the current resource occupation information of SBC;
SR equipment responds the resource occupation information of each SBC that new record more administers according to the intercommunication that receives.
Another kind of SR equipment obtains the method for resource occupation information, comprising:
Each SBC periodically reports the current resource occupation information of this SBC to the SR equipment that is belonged to;
The resource occupation information of each SBC that SR renewal of the equipment record is administered.
Other similar approach repeats no more.
Wherein, the resource occupation information of SBC can be the load condition indication information, if the current load capacity of SBC is full, then the load condition indication information is a full load condition, if the current load capacity of SBC less than, promptly also have idle load capacity, then the load condition indication information is non-full load condition, also indicates idle load capacity simultaneously.Then SR equipment is defined as the SBC that sip terminal provides service according to the resource occupation information of each SBC that is administered in S102, specifically comprises:
SR equipment determines that according to the load condition indication information of each SBC that is administered the SBC of arbitrary non-full load condition provides service for sip terminal;
Perhaps
SR equipment determines that according to the load condition indication information of each SBC that is administered the maximum SBC of non-full load condition and idle load capacity provides service for sip terminal.
Certainly, a kind of special circumstances are that each SBC that SR equipment is administered is full load condition, and then SR equipment can return 403 Forbidden (refusal) message to sip terminal, indication sip terminal registration failure, and register flow path is ended.
The resource occupation information of SBC also can have other expression mode, for example can be resources occupation rate, and similarly, SR equipment is according to the resources occupation rate of each SBC that is administered, determines that arbitrary resources occupation rate provides service less than 1 SBC for sip terminal; Perhaps, according to the resources occupation rate of each SBC that is administered, determining that resources occupation rate is minimum and being not equal to 1 SBC provides service for sip terminal.If SR equipment all reaches at 1 o'clock in the resources occupation rate of each SBC that is administered, return 403 Forbidden message to sip terminal, register flow path is ended.
It is to be noted, sip terminal powers on or need re-register the time at every turn, always the positional information according to the SR equipment that disposes sends registration message to SR, and sip terminal does not need to remember that the last registration back of being redirected provides the IP address of the SBC of service for it, and uses in this is registered; After the redirected registration of sip terminal was finished, message such as follow-up all registrations refresh, heartbeat keep-alive, calling all directly sent to the SBC that service is provided for it, accept business by this SBC, and no longer send to SR equipment; Sip terminal keeps heartbeat with the SBC that service is provided for it, does not keep heartbeat with SR equipment, and SR equipment also can not be replied OPTIONS (link test/heartbeat) message of sip terminal.
With the register method of specific embodiment explanation sip terminal, suppose to comprise in the application scenarios SR equipment below, five SBC of this SR equipment administration, be respectively SBC1～SBC5, the sip terminal that needs to insert the IMS network is specially UE (User Equipment, subscriber equipment), wherein:
The IP address of SR equipment is 192.168.2.1, and the poll strategy is adopted in configuration, i.e. detection load state successively from SBC1 to SBC5;
The IP address of SBC1 is 192.168.3.1, and capacity is 1000 UE at full capacity, and current load capacity is 1000 UE;
The IP address of SBC2 is 192.168.3.2, and capacity is 1000 UE at full capacity, and current load capacity is 1000 UE;
The IP address of SBC3 is 192.168.3.3, and capacity is 1000 UE at full capacity, and current load capacity is 1000 UE;
The IP address of SBC4 is 192.168.3.4, and capacity is 1000 UE at full capacity, and current load capacity is 1000 UE;
The IP address of SBC5 is 192.168.3.5, and capacity is 1000 UE at full capacity, and current load capacity is 500 UE;
The IP address of UE is 192.168.1.1, and has disposed the IP address of SR equipment, i.e. 192.168.2.1.
In this embodiment, sip terminal is the register flow path of UE, comprises the steps:
Step 1, SR equipment (192.168.2.1) send the intercommunication request to SBC1 (192.168.3.1);
Step 2, SBC1 (192.168.3.1) are 1000 UE according to current load capacity, return the intercommunication response to SR equipment (192.168.2.1), wherein carry the load condition indication information of SBC1, the load condition indication information that concrete SBC1 reports is a full load condition;
Step 3, SR equipment (192.168.2.1) send the intercommunication request to SBC2 (192.168.3.2);
Step 4, SBC2 (192.168.3.2) are 1000 UE according to current load capacity, return the intercommunication response to SR equipment (192.168.2.1), wherein carry the load condition indication information of SBC2, the load condition indication information that concrete SBC2 reports is a full load condition;
Step 5, SR equipment (192.168.2.1) send the intercommunication request to SBC3 (192.168.3.3);
Step 6, SBC3 (192.168.3.3) are 1000 UE according to current load capacity, return the intercommunication response to SR equipment (192.168.2.1), wherein carry the load condition indication information of SBC3, the load condition indication information that concrete SBC3 reports is a full load condition;
Step 7, SR equipment (192.168.2.1) send the intercommunication request to SBC4 (192.168.3.4);
Step 8, SBC4 (192.168.3.4) are 1000 UE according to current load capacity, return the intercommunication response to SR equipment (192.168.2.1), wherein carry the load condition indication information of SBC4, the load condition indication information that concrete SBC4 reports is a full load condition;
Step 9, SR equipment (192.168.2.1) send the intercommunication request to SBC5 (192.168.3.5);
Step 10, SBC5 (192.168.3.5) are 500 UE according to current load capacity, return the intercommunication response to SR (192.168.2.1), wherein carry the load condition indication information of SBC5, the load condition indication information that concrete SBC5 reports is that non-full load condition and indication have 500 idle load capacities;
Step 11, SR equipment (192.168.2.1) is the load condition indication information of each SBC of new record more, and promptly SBC1～SBC4 is a full load condition, and SBC5 is non-full load condition and 500 idle load capacities are arranged;
Step 12, UE according to the IP address (192.168.2.1) of the SR equipment that disposes, send REGISTER message to SR equipment (192.168.2.1) when powering on or need re-register;
Step 13, SR equipment are according to the load condition indication information of each SBC, and inquiring SBC5 is non-full load condition, and then being defined as UE, the SBC of service is provided is SBC5, that is to say UE is assigned on the SBC5;
Step 14, SR equipment return 305Use Proxy message to UE, have wherein carried the IP address (192.168.3.5) of the SBC5 that determines.
Step 15, UE resend REGISTER message to SBC5 (192.168.3.5), and UE finishes by post-registration its authentication at SBC5 (192.168.3.5), can insert the IMS network;
After this, UE will open link test, periodically send OPTIONS (link test/heartbeat) message to SBC5 (192.168.3.5), when UE calls out other sip terminal, send INVITE to SBC5 (192.168.3.5).
The register method of the sip terminal that the embodiment of the invention provides, in sip terminal, dispose the positional information of SR equipment in advance, positional information according to configuration sends registration message to SR equipment to sip terminal when maybe needing to re-register powering on, SR equipment is defined as the SBC that sip terminal provides service according to the resource occupation information of each SBC that is administered, the load capacity of each SBC in can balanced IMS network, and guarantee that the SBC determine is current and can insert sip terminal, reduced requirement to load capacity and the disposal ability of SBC; SR equipment returns redirect message, carry the IP address of the SBC that determines, sip terminal is redirected being registered to the SBC that determines according to the redirect message that receives, the controllability and the fail safe of sip terminal access IMS network have been strengthened, for solid foundation has been laid in popularization and the expansion of IMS.
Based on same technical conceive, the embodiment of the invention provides a kind of Accreditation System of sip terminal, as shown in Figure 2, comprises SBC 200 and sip terminal 201, and the SR equipment 202 of a plurality of SBC 200 of newly-increased administration, wherein, the positional information of configuration SR equipment in the sip terminal 201, sip terminal 201 is set up physical connection by access network and SR equipment 202, because IMS is independent of access technology, so the access network of sip terminal 201 can be fixed network, also can be mobile network, wherein:
Wherein, the resource occupation information of each SBC 200 that SR equipment 202 is administered in order to obtain, also be used for sending the intercommunication request to each SBC that administers 200 successively, and receive the intercommunication response that each SBC 200 returns according to the intercommunication request, respond the resource occupation information of each SBC 200 that new record more administers according to the intercommunication that receives, wherein, carry the current resource occupation information of this SBC in the intercommunication response that SBC 200 returns; Perhaps
Receive the current resource occupation information of this SBC that each SBC that administers 200 periodically reports, and the resource occupation information of each SBC 200 of administering of new record more.
Wherein, resource occupation information can be the load condition indication information, and SR equipment 202 determines that according to the load condition indication information of each SBC 200 that is administered the SBC 200 of arbitrary non-full load condition provides service for sip terminal 201; Perhaps
According to the load condition indication information of each SBC 200 that is administered, determine that the maximum SBC 200 of non-full load condition and idle load capacity provides service for sip terminal 201.
When SR equipment 202 is full load condition at each SBC 200 that is administered, return refuse information to sip terminal 201.
A kind of possibility structure of SR equipment 202 as shown in Figure 3, comprising:
Memory cell 301: the resource occupation information that is used to store each SBC that is administered;
Receiving element 302: be used to receive the registration message that sip terminal sends;
Determining unit 303: be used for after receiving registration message,, be defined as the SBC that sip terminal provides service according to the resource occupation information of each SBC that is administered;
Transmitting element 304: be used for returning redirect message, wherein carry the IP address of the SBC that determines to sip terminal.
As shown in Figure 4, the resource occupation information of each SBC that SR equipment is administered in order to obtain, this SR equipment also can comprise:
First acquiring unit 401: be used for sending the intercommunication request to each SBC that administers successively, and receive the intercommunication response that each SBC returns according to described intercommunication request, wherein, carry the current resource occupation information of this SBC in the intercommunication response that SBC returns;
First record cell 402: be used for according to the intercommunication that receives response in the memory cell 301 resource occupation information of each SBC of administering of new record more.
Perhaps, as shown in Figure 5, SR equipment also can comprise:
Second acquisition unit 501: be used to receive the current resource occupation information of this SBC that each SBC that administers periodically reports;
Second record cell 502: be used in the memory cell 301 resource occupation information of each SBC of administering of new record more.
As shown in Figure 6; be the network architecture of IMS in the embodiment of the invention, link to each other by internal communication link between SR equipment and each SBC that is administered, in order to realize the disaster tolerance function of system; also can be the standby SR equipment of SR equipment disposition, both backup each other and link to each other by the keep-alive link.If in the system be the standby SR equipment of SR equipment disposition, then need to dispose simultaneously the positional information of SR equipment and standby SR equipment in each sip terminal.From signal flow as can be seen, sip terminal 1 is registered to the SBC1 that SR equipment is administered via access network 1 by being redirected, and sip terminal 2 is registered to the SBC1 that SR equipment is administered via access network 2 by being redirected; From media stream as can be seen, after sip terminal 1 and sip terminal 2 registrations were finished, the media stream of carrying out the SIP session between follow-up sip terminal 1 and the sip terminal 2 was no longer via SR equipment but directly via SBC1.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1, a kind of register method of session initiation protocol terminal is characterized in that, comprising:
The initial session protocol sip terminal sends registration message according to the positional information of the session distributing equipment of configuration to described session distributing equipment;
Described session distributing equipment is after receiving registration message, resource occupation information according to each the Session Border Controller SBC that is administered, be defined as sip terminal the SBC of service is provided, and return redirect message, wherein carry the Internet Protocol IP address of the SBC that determines to described sip terminal;
Described sip terminal is redirected the SBC that is registered to the indication of described IP address according to the redirect message that receives.
2, the method for claim 1 is characterized in that, the positional information of described session distributing equipment comprises the IP address;
Described sip terminal sends registration message according to the positional information of the session distributing equipment of configuration to described session distributing equipment, specifically comprises:
Described sip terminal is according to the IP address of the session distributing equipment of configuration, to the session distributing equipment transmission registration message of this IP address indication.
3, the method for claim 1 is characterized in that, the positional information of described session distributing equipment comprises domain-name information;
Described sip terminal sends registration message according to the positional information of the session distributing equipment of configuration to described session distributing equipment, specifically comprises:
Described sip terminal is according to the domain-name information of the session distributing equipment of configuration, nslookup resolution server, the IP address that obtains described session distributing equipment; And
According to the IP address that gets access to, to the session distributing equipment transmission registration message of this IP address indication.
4, the method for claim 1 is characterized in that, the session distributing equipment obtains the method for resource occupation information, comprising:
The session distributing equipment sends the intercommunication request to each SBC that administers successively;
Each SBC returns the intercommunication response according to the intercommunication request that receives to described session distributing equipment, wherein carries the current resource occupation information of this SBC;
The session distributing equipment responds the resource occupation information of each SBC that new record more administers according to the intercommunication that receives.
5, the method for claim 1 is characterized in that, the session distributing equipment obtains the method for resource occupation information, comprising:
Each SBC periodically reports the current resource occupation information of this SBC to the session distributing equipment that is belonged to;
The session distributing equipment is the resource occupation information of each SBC of administering of new record more.
As claim 4 or 5 described methods, it is characterized in that 6, described resource occupation information comprises the load condition indication information;
Described session distributing equipment is defined as the SBC that described sip terminal provides service according to the resource occupation information of each SBC that is administered, specifically comprises:
Described session distributing equipment determines that according to the load condition indication information of each SBC that is administered the SBC of arbitrary non-full load condition provides service for described sip terminal;
Perhaps
Described session distributing equipment determines that according to the load condition indication information of each SBC that is administered the maximum SBC of non-full load condition and idle load capacity provides service for described sip terminal.
7, the method for claim 1 is characterized in that, described redirect message comprises 305Use
Proxy message, expression needs to use the acting server of appointment.
8, the method for claim 1 is characterized in that, described sip terminal is redirected the SBC that is registered to the indication of described IP address according to the redirect message that receives, and specifically comprises:
Described sip terminal resends registration message according to the redirect message that receives to the SBC of described IP address indication;
When described SBC carries the authentication header information in the registration message that receives, according to the authentication header information described sip terminal is carried out authentication, and authentication by the back return success message to described sip terminal, the indication sip terminal inserted IP Multimedia System IMS network.
9, the method for claim 1 is characterized in that, described sip terminal is redirected the SBC that is registered to the indication of described IP address according to the redirect message that receives, and specifically comprises:
Described sip terminal resends registration message according to the redirect message that receives to the SBC of described IP address indication;
When described SBC does not carry the authentication header information in the registration message that receives, return unauthorized message to described sip terminal;
Described sip terminal sends registration message according to the unauthorized message that receives once more to described SBC, wherein carries the authentication header information;
Described SBC carries out authentication according to the authentication header information that carries in the registration message that receives once more to described sip terminal, and returns success message by the back to described sip terminal in authentication, and the indication sip terminal has inserted IP Multimedia System IMS network.
10, a kind of Accreditation System of session initiation protocol terminal comprises Session Border Controller SBC and initial session protocol sip terminal, it is characterized in that, also comprises the session distributing equipment of administering a plurality of SBC, wherein:
Described sip terminal is used for the positional information according to the session distributing equipment of configuration, sends registration message to described session distributing equipment, and according to the redirect message that described session distributing equipment returns, is redirected the SBC that is registered to the indication of IP address;
Described session distributing equipment, be used for behind the registration message that receives described sip terminal transmission, resource occupation information according to each SBC that is administered, being defined as sip terminal provides the SBC of service, and return redirect message to described sip terminal, wherein carry the Internet Protocol IP address of the SBC that determines.
11, system as claimed in claim 10 is characterized in that,
Described session distributing equipment, also be used for sending the intercommunication request to each SBC that administers successively, and receive the intercommunication response that each SBC returns according to described intercommunication request, respond the resource occupation information of each SBC that new record more administers according to the intercommunication that receives, carry the current resource occupation information of this SBC in the intercommunication response that described SBC returns; Perhaps
Receive the current resource occupation information of this SBC that each SBC that administers periodically reports, and the resource occupation information of each SBC of administering of new record more.
12, system as claimed in claim 11 is characterized in that, described resource occupation information comprises the load condition indication information; And
Described session distributing equipment determines that according to the load condition indication information of each SBC that is administered the SBC of arbitrary non-full load condition provides service for described sip terminal; Perhaps, according to the load condition indication information of each SBC that is administered, determine that the maximum SBC of non-full load condition and idle load capacity provides service for described sip terminal.
13, a kind of session distributing equipment is characterized in that, comprising:
Memory cell: the resource occupation information that is used to store each the Session Border Controller SBC that is administered;
Receiving element: be used to receive the registration message that the initial session protocol sip terminal sends;
Determining unit: be used for after receiving described registration message,, be defined as the SBC that sip terminal provides service according to the resource occupation information of each SBC that is administered;
Transmitting element: be used for returning redirect message, wherein carry the Internet Protocol IP address of the SBC that determines to described sip terminal.
14, equipment as claimed in claim 13 is characterized in that, also comprises:
First acquiring unit: be used for sending the intercommunication request to each SBC that administers successively, and receive the intercommunication response that each SBC returns according to described intercommunication request, carry the current resource occupation information of this SBC in the intercommunication response that described SBC returns;
First record cell: be used for according to the intercommunication that receives response in the described memory cell resource occupation information of each SBC of administering of new record more.
15, equipment as claimed in claim 13 is characterized in that, also comprises:
Second acquisition unit: be used to receive the current resource occupation information of this SBC that each SBC that administers periodically reports;
Second record cell: be used in the described memory cell resource occupation information of each SBC of administering of new record more.
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| CN2008102410414A CN101448240B (en) | 2008-12-25 | 2008-12-25 | Registration method, system and equipment of session initiation protocol terminal |
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| CN2008102410414A CN101448240B (en) | 2008-12-25 | 2008-12-25 | Registration method, system and equipment of session initiation protocol terminal |
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| CN101448240B CN101448240B (en) | 2010-09-29 |
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