CN103312667A - Information update method, device and system - Google Patents
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- CN103312667A CN103312667A CN2012100616847A CN201210061684A CN103312667A CN 103312667 A CN103312667 A CN 103312667A CN 2012100616847 A CN2012100616847 A CN 2012100616847A CN 201210061684 A CN201210061684 A CN 201210061684A CN 103312667 A CN103312667 A CN 103312667A
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Abstract
The invention discloses an information update method, a device and a system, relates to the communication technology field, and solves the problem of real time of a priority strategy after a terminal response load is balanced. The technical scheme of the invention comprises: an SIP terminal sends a request to a network element server for acquiring a latest priority list; the SIP terminal receives a response signaling sent by the network element server; when a current priority list of the SIP terminal is inconsistent with the latest priority list, the latest priority list is used to refresh the current priority list; or, when the current priority list of the SIP terminal is inconsistent with the latest priority list, the SIP terminal sends an instruction of querying a target priority list to a DNS server; and when the target priority list returned by the DNS server is inconsistent with the current priority list, the target priority list is used to refresh the current priority list. The embodiment of the invention is suitable for the information update in the communication technology.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of methods, devices and systems of information updating.
Background technology
Present SIP (Session Initiation Protocol at terminal and many network elements server composition, Session initiation Protocol) in the network, adopt DNS-SRV (Domain Name System-SRV, server resource record) inquiry to realize the load balancing of server.DNS-SRV record is the type of a kind of resource record of supporting in the database of DNS (Domain Name System, domain name system) server.
In the prior art, the dynamics of load balancing depends on the cycle of the DNS request of sip terminal own.In existing DNS request model, the burden of comprehensive dns server is considered, the ageing time T1 that a default is all arranged for the DNS record, data in the direct retrieval system buffering of repetitive requests in T1, simultaneously, there is simultaneously a registration period T2 in the sip server, sip terminal will refresh the registration on registrar before registration period T2 arrives, and before the T1 ageing time arrives, sip terminal need to carry out SRV request to dns server and upgrade local registrar IP (Internet Protocol, interconnected agreement between the network) address priority tabulation.
Sip terminal DNS-SRV ageing time is T1, and the SIP registration is T2 time refresh cycle, and T2 " T1, T2=1h generally, T1=24h.When having registrar A and registrar N, take turns through one that to obtain priority after the priority list inquiry be P1, dns server priority also is P1, wherein the priority of the registrar A that comprises of P1 is greater than the priority of registrar N, be the load that the load of registrar A is lower than registrar N, so sip terminal send registration request to registrar A.Before sip terminal is not initiated registration request to registrar, along with a large amount of terminals is initiated registration request to registrar A, load on the registrar A is more and more, load on registrar A and the registrar N is changed, the triggering load balance calculates, the result is P2, and P2 represents the priority of registrar N greater than the priority of registrar A, and this moment, dns server priority was P2.Overtime as T1, sip terminal is initiatively initiated the DNS-SRV inquiry, and this moment, the priority of sip terminal priority list was P2.After T2 is overtime, sip terminal is initiatively initiated the SIP registration, this moment, purpose was registrar N, and the duty ratio registrar A of registrar N is light, so that more terminal is after getting access to P2, initiating registration to registrar N refreshes, registrar A load will reduce, and registrar N load increases, and causes again triggering equilibrium, DNS priority becomes P1, so that the priority upset.Above step, present the process of load dynamic change between registrar A and the registrar N, so that the average load of registrar A and registrar N equates.
State in realization in the process of prior art, when adopting T1 " when T2 is tactful, can only be with the load of T1 cycle granularity refresh registration server, the terminal Request Priority strategy of initiating can lag behind the priority policy behind the load balance like this, affects the real-time of load balancing strategy; When adopting T1＜=T2 strategy, can guarantee that each registration request can initiate registration request with the registrar that the registration period granularity refreshes, but the load that can strengthen like this dns server.
Summary of the invention
Embodiments of the invention provide a kind of methods, devices and systems of information updating, in the situation that the load of reduce dns server, have improved the real-time that refreshes density and load balancing of load balancing state.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method of information updating comprises:
The Session initiation Protocol sip terminal sends for the request of obtaining up-to-date priority list to the network element server;
Described sip terminal receives the response signaling that described network element server sends, and described response signaling comprises up-to-date priority list, and described up-to-date priority list comprises the IP address of registrar and the up-to-date priority of described registrar;
When the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation; Perhaps,
When the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, described sip terminal sends the instruction of query aim priority list to described dns server, the described target priority tabulation of returning when described dns server and described current priority are tabulated when inconsistent, use described target priority tabulation to refresh described current priority tabulation.
A kind of method of information updating comprises:
The network element server sends the instruction of the up-to-date priority list of inquiry to described dns server with predetermined period;
Described network element server receives the described up-to-date priority list that described dns server sends, and comprises the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list;
When the tabulation of the current priority on the described network element server is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation;
When described network element server receive that the Session initiation Protocol sip terminal sends be used for obtaining the request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal.
A kind of method of information updating comprises:
The domain name system DNS server receives the instruction of the up-to-date priority list of inquiry of network element server transmission;
Described dns server sends to described network element server with described up-to-date priority list, so that the Session initiation Protocol sip terminal obtains described up-to-date priority list from described network element server, comprise the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
A kind of Session initiation Protocol sip terminal comprises:
Transmitting element is used for sending for the request of obtaining up-to-date priority list to the network element server;
Receiving element is used for receiving the response signaling that described network element server sends, and described response signaling comprises up-to-date priority list, and described up-to-date priority list comprises the IP address of registrar and the up-to-date priority of described registrar;
Processing unit is used for using described up-to-date priority list to refresh described current priority tabulation when the current priority tabulation of self is inconsistent with described up-to-date priority list; Perhaps, be used for when the current priority tabulation of self is inconsistent with described up-to-date priority list, send the instruction of query aim priority list to described dns server, the described target priority tabulation of returning when described dns server and described current priority are tabulated when inconsistent, use described target priority tabulation to refresh described current priority tabulation.
A kind of network element server comprises:
Transmitting element is used for sending to described dns server with predetermined period the instruction of the up-to-date priority list of inquiry;
Receiving element is used for receiving the described up-to-date priority list that described dns server sends, and comprises the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list;
Processing unit is used for using described up-to-date priority list to refresh described current priority tabulation when the current priority tabulation of self is inconsistent with described up-to-date priority list;
Response unit, be used for when receive that the Session initiation Protocol sip terminal sends when obtaining the request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal.
A kind of domain name system DNS server comprises:
Receiving element is used for the instruction of the up-to-date priority list of inquiry of reception network element server transmission;
Transmitting element, be used for described up-to-date priority list is sent to described network element server, so that the Session initiation Protocol sip terminal obtains described up-to-date priority list from described network element server, comprise the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
A kind of system of information updating comprises:
Session initiation Protocol sip terminal, network element server and domain name system DNS server.
The method of a kind of information updating that the embodiment of the invention provides, device and system, the network element server obtains up-to-date priority list with predetermined period from described dns server, and then sip terminal is by obtaining up-to-date priority list from the network element server, the refresh granularity of up-to-date priority list is refine in the reciprocal process of sip terminal and network element server, because the deployment of described network element server is less than the deployment of sip terminal, so bring under the prerequisite of extra load can not for described dns server, improve the density that refreshes of load balancing state, also improved the real-time that described sip terminal responds described up-to-date priority list.
Description of drawings
The main flow chart of the method for a kind of information updating that Fig. 1 provides for the embodiment of the invention;
The structure chart of a kind of Session initiation Protocol sip terminal that Fig. 2 provides for the embodiment of the invention;
The main flow chart of the method for the another kind of information updating that Fig. 3 provides for the embodiment of the invention;
The structure chart of a kind of network element server that Fig. 4 provides for the embodiment of the invention;
The main flow chart of the method for another information updating that Fig. 5 provides for the embodiment of the invention;
The flow chart of the method for another information updating that Fig. 6 provides for the embodiment of the invention;
The structure chart of a kind of dns server that Fig. 7 provides for the embodiment of the invention;
The overall structure figure of a kind of dns server that Fig. 8 provides for the embodiment of the invention;
The system construction drawing of a kind of information updating that Fig. 9 provides for the embodiment of the invention;
The flow chart of the method for a kind of information updating that Figure 10 provides for the embodiment of the invention;
The flow chart of the method for another information updating that Figure 11 provides for the embodiment of the invention.
Embodiment
Method, device, system to a kind of information updating of the embodiment of the invention is described in detail below in conjunction with accompanying drawing.
The embodiment of the invention provides a kind of method of information updating, and as shown in Figure 1, the method can comprise:
101, the Session initiation Protocol sip terminal sends for the request of obtaining up-to-date priority list to the network element server;
102, described sip terminal receives the response signaling that described network element server sends, and described response signaling comprises up-to-date priority list, and described up-to-date priority list comprises the IP address of registrar and the up-to-date priority of described registrar;
103, when the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation; Perhaps,
104, when the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, described sip terminal sends the instruction of query aim priority list to described dns server, the described target priority tabulation of returning when described dns server and described current priority are tabulated when inconsistent, use described target priority tabulation to refresh described current priority tabulation.
The method of a kind of information updating that the embodiment of the invention provides, described sip terminal by with described network element server mutual in obtain up-to-date priority list, when tabulating when inconsistent with described current priority, refresh described current priority tabulation, perhaps obtain the target priority tabulation from described dns server, refresh described current priority tabulation, the present invention refine to the refresh granularity of up-to-date priority list in the reciprocal process of described sip terminal and described network element server, has improved the real-time that described sip terminal responds described up-to-date priority list.
Optionally, when described network element server is the highest registrar of current priority tabulation medium priority, within the current digestion period of domain name system DNS server, described sip terminal is in the default refresh registration of described registrar in the cycle, send the registration request that is used for obtaining up-to-date priority list to described registrar, the described refresh registration cycle is less than described current digestion period.
Optionally, when described network element server was CSCF CSCF network element or acting server, described sip terminal sent for the session request of obtaining up-to-date priority list to described CSCF network element or acting server.
Correspondingly, the embodiment of the invention provides a kind of Session initiation Protocol sip terminal, as shown in Figure 2, comprises transmitting element 11, receiving element 12 and processing unit 13.
Wherein, described transmitting element 11 is used for sending for the request of obtaining up-to-date priority list to the network element server;
Receiving element 12 is used for receiving the response signaling that described network element server sends, and described response signaling comprises up-to-date priority list, and described up-to-date priority list comprises the IP address of registrar and the up-to-date priority of described registrar;
A kind of Session initiation Protocol sip terminal that the embodiment of the invention provides, described terminal is obtained the up-to-date priority list of described dns server by transmitting element and receiving element, finding current priority on described up-to-date priority list and the terminal when described processing unit tabulates when inconsistent, utilize described up-to-date priority list to refresh described current priority tabulation, perhaps obtain the target priority tabulation from described dns server, refresh described current priority tabulation, the present invention refine to the refresh granularity of up-to-date priority list in the reciprocal process of described sip terminal and described network element server, has improved the real-time that described sip terminal responds described up-to-date priority list.
Optionally, when described network element server is the highest registrar of current priority tabulation medium priority, described transmitting element, concrete being used within the current digestion period of domain name system DNS server, described transmitting element is in the default refresh registration of described registrar in the cycle, send the registration request that is used for obtaining up-to-date priority list to described registrar, the described refresh registration cycle is less than described current digestion period.
Optionally, when described network element server is CSCF CSCF network element or acting server, described transmitting element, concrete being used for sends for the session request of obtaining up-to-date priority list to described CSCF network element or acting server.
The embodiment of the invention also provides a kind of method of information updating, and as shown in Figure 3, the method can comprise:
201, the network element server sends the instruction of the up-to-date priority list of inquiry to described dns server with predetermined period;
202, described network element server receives the described up-to-date priority list that described dns server sends, and comprises the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list;
203, when the tabulation of the current priority on the described network element server is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation;
204, when described network element server receive that the Session initiation Protocol sip terminal sends be used for obtaining the request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal.
The method of a kind of information updating that the embodiment of the invention provides, obtain the up-to-date priority list of described dns server by described network element server, when described sip terminal transmission is used for obtaining the request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal, because the deployment amount of described network element server will be much smaller than the deployment amount of sip terminal, so bring extra expense can for hardly described dns server, and utilize described network element server to participate in refreshing up-to-date priority list, the refresh granularity of up-to-date priority list is refine in the reciprocal process of described sip terminal and described network element server, improved the real-time that described sip terminal responds described up-to-date priority list.
Optionally, when described network element server is the highest registrar of current priority tabulation medium priority, within the current digestion period of domain name system DNS server, when described registrar default refresh registration receives in the cycle that described sip terminal sends when obtaining the registration request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal, the described refresh registration cycle is less than described current digestion period.
Optionally, when described network element server is CSCF CSCF network element or acting server, when described CSCF network element or acting server receive that described sip terminal sends be used for obtaining the session request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal.
Correspondingly, the embodiment of the invention provides a kind of network element server, as shown in Figure 4, comprises transmitting element 21, receiving element 22, processing unit 23 and response unit 24.
Wherein, described transmitting element 21 is used for sending to described dns server with predetermined period the instruction of the up-to-date priority list of inquiry;
Receiving element 22 is used for receiving the described up-to-date priority list that described dns server sends, and comprises the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list;
Processing unit 23 is used for using described up-to-date priority list to refresh described current priority tabulation when the current priority tabulation of self is inconsistent with described up-to-date priority list;
A kind of network element server that the embodiment of the invention provides, obtain the up-to-date priority list of described dns server by transmitting element and receiving element, and utilize processing unit to use described up-to-date priority list to refresh described current priority tabulation, when described sip terminal transmission is used for obtaining the request of up-to-date priority list, described response unit returns the response signaling that carries described up-to-date priority list to described sip terminal, because the deployment amount of described network element server is much smaller than the deployment amount of sip terminal, so bring extra expense can for hardly described dns server, and utilize described network element server to participate in refreshing up-to-date priority list, the refresh granularity of up-to-date priority list is refine in the reciprocal process of described sip terminal and described network element server, improved the real-time that described sip terminal responds described up-to-date priority list.
Optionally, when described network element server is the highest registrar of current priority tabulation medium priority, described response unit, concrete being used within the current digestion period of domain name system DNS server, when receives in the cycle in default refresh registration that described sip terminal sends when obtaining the registration request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal, the described refresh registration cycle is less than described current digestion period.
Optionally, when described network element server is CSCF CSCF network element or acting server, described response unit, concrete be used for when receive that described sip terminal sends when obtaining the session request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal.
The embodiment of the invention also provides a kind of method of information updating, and as shown in Figure 5, the method can comprise:
301, the domain name system DNS server receives the instruction of the up-to-date priority list of inquiry of network element server transmission;
302, described dns server sends to described network element server with described up-to-date priority list, so that the Session initiation Protocol sip terminal obtains described up-to-date priority list from described network element server, comprise the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
The method of a kind of information updating that the embodiment of the invention provides, by described dns server up-to-date priority list is sent to the network element server, so that the Session initiation Protocol sip terminal obtains described up-to-date priority list from described network element server, because the deployment amount of described network element server will be much smaller than the deployment amount of sip terminal, so bring extra expense can for hardly described dns server, refresh granularity with up-to-date priority list refine in the reciprocal process of described sip terminal and described network element server simultaneously, has improved the real-time that described sip terminal responds described up-to-date priority list.
Optionally, the method for a kind of information updating that the embodiment of the invention provides as shown in Figure 6, also comprises:
303, when described dns server received the instruction of the query aim priority list that described sip terminal sends, described dns server returned described target priority tabulation to described sip terminal.
Correspondingly, the embodiment of the invention provides a kind of domain name system DNS server, as shown in Figure 7, comprises receiving element 31 and transmitting element 32.
Wherein, described receiving element 31 is used for the instruction of the up-to-date priority list of inquiry of reception network element server transmission;
Transmitting element 32, be used for described up-to-date priority list is sent to described network element server, so that the Session initiation Protocol sip terminal obtains described up-to-date priority list from described network element server, comprise the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
A kind of domain name system DNS server that the embodiment of the invention provides, by described receiving element and transmitting element up-to-date priority list is sent to the network element server, so that the Session initiation Protocol sip terminal obtains described up-to-date priority list from described network element server, because the deployment amount of described network element server is much smaller than the deployment amount of sip terminal, so bring extra expense can for hardly described dns server, refresh granularity with up-to-date priority list refine in the reciprocal process of described sip terminal and described network element server simultaneously, has improved the real-time that described sip terminal responds described up-to-date priority list.
Optionally, a kind of domain name system DNS server that the embodiment of the invention provides as shown in Figure 8, also comprises processing unit 33, be used for when receiving the instruction of the query aim priority list that described sip terminal sends, returning described target priority to described sip terminal and tabulating.
The embodiment of the invention also provides a kind of system of information updating, and as shown in Figure 9, this system comprises:
Sip terminal as shown in Figure 2, network element server as shown in Figure 4 and dns server as shown in Figure 7; Perhaps,
Sip terminal as shown in Figure 2, network element server as shown in Figure 4 and dns server as shown in Figure 8.
The system of a kind of information updating that the embodiment of the invention provides, the network element server obtains up-to-date priority list with predetermined period from described dns server, and then sip terminal is by obtaining up-to-date priority list from the network element server, the refresh granularity of up-to-date priority list is refine in the reciprocal process of sip terminal and network element server, because the deployment of described network element server is less than the deployment of sip terminal, so bring under the prerequisite of extra load can not for described dns server, improve the density that refreshes of load balancing state, also improved the real-time that described sip terminal responds described up-to-date priority list.
In actual applications, described sip terminal can arrange T1 digestion period of a described dns server, and described registrar can arrange a refresh registration cycle T 2, and T2 " T1, generally speaking, T2=1h, T1=24h.
As shown in figure 10, the system of described a kind of information updating comprises sip terminal, registrar A and registrar N, and dns server.Described sip terminal is at T1 in the time, after first round priority list inquiry, obtain priority list P1={A＞N}, the priority of expression registrar A is higher than the priority of registrar N, be the load that the load of registrar A is lower than registrar N, described P1 also is kept on the described dns server.After described sip terminal obtains described P1 from described dns server inquiry, described sip terminal sends registration request to the high registrar A of priority, along with the load on the registrar A increases gradually, cause the load on registrar A and the registrar N to change, triggering described dns server calculates described registrar A and N load balance again, the result is P2={A＜N}, and the priority list on the described dns server also is P2 at this moment, next carries out the following step:
401, described registrar sends the instruction of the up-to-date priority list of inquiry to described dns server with predetermined period.
Wherein, within the current digestion period of described dns server, described registrar sends the instruction of the up-to-date priority list of inquiry to described dns server with predetermined period, described registrar A and N send the instruction of the up-to-date priority list of inquiry to described dns server with the less time interval.Because the deployment of described registrar A and N is far smaller than the deployment amount of sip terminal, so described dns server is produced load hardly.
402, described dns server receives the instruction of the up-to-date priority list of inquiry of described registrar transmission;
403, described dns server sends to described registrar with described up-to-date priority list, so that described sip terminal obtains described up-to-date priority list from described registrar, comprise the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
Wherein said up-to-date priority list is P2.
404, described registrar receives the described up-to-date priority list that described dns server sends, and comprises the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
405, when the tabulation of the current priority on the described registrar is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation.
When the tabulation of the current priority on described registrar A and the N is P1, inconsistent with described P2, then refresh P1 with P2.
406, within the current digestion period of described dns server, described sip terminal is in the default refresh registration of described registrar in the cycle, send the registration request that is used for obtaining up-to-date priority list to described registrar, the described refresh registration cycle is less than described current digestion period.
Wherein, described registrar is the highest registrar A of current priority tabulation P1 medium priority.
407, in the default refresh registration of described registrar in the cycle, when described registrar receive that described sip terminal sends be used for obtaining the registration request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal, the described refresh registration cycle is less than described current digestion period.
Described registrar A receive that described sip terminal sends be used for obtaining the registration request of up-to-date priority list P2 the time, described registrar A fills in described P2 in the parameter by dns-priority parameter of the expansion of the Contact header field in response signaling.
408, described sip terminal receives the response signaling that described registrar sends, and described response signaling comprises up-to-date priority list, and described up-to-date priority list comprises the IP address of registrar and the up-to-date priority of described registrar;
Described sip terminal refresh registration success obtains described P2.
409, when the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation.
When the P1 on the described sip terminal and P2 are inconsistent, use P2 to refresh P1, and when registering, the registrar N that the priority in described P2 is the highest send registration request next time, perhaps,
410, when the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, described sip terminal sends the instruction of query aim priority list to described dns server, the described target priority tabulation of returning when described dns server and described current priority are tabulated when inconsistent, use described target priority tabulation to refresh described current priority tabulation.
411, when described dns server received the instruction of the query aim priority list that described sip terminal sends, described dns server returned described target priority tabulation to described sip terminal.
Step 410 and 411 is in order to guarantee that described sip terminal obtains the most real-time the most accurate priority list, and described target priority tabulation is P2 also, so utilize P2 to refresh P1.
After T2 was overtime, described sip terminal was initiated registration request to the highest registrar of the priority in the most real-time priority list that obtains, and namely the registrar N in the P2 sends registration request.Described registrar A load will reduce, and described registrar N load increases, and causes again triggering equilibrium, and priority list becomes again P1, so that the priority upset.Repeating step 401 presents the process of load dynamic change between registrar A and the N, so that the average load of registrar A and N equates.
Compared with prior art, enquiry frequency F1=1/T1, enquiry frequency of the present invention are F2=1/T2, because T2 " so T1 is F2 " is F1, have greatly improved the enquiry frequency of priority list.
Registrar in the said system is not limited to two, and is available a plurality of, and same sip terminal also can have a plurality of.
As shown in figure 11, the system of described a kind of information updating comprises sip terminal A and B, CSCF CSCF network element or acting server, and dns server, and described sip terminal refreshes priority list by session, and concrete steps are as follows:
501, CSCF network element or acting server send the instruction of the up-to-date priority list of inquiry to described dns server with predetermined period;
502, described dns server receives the instruction of the up-to-date priority list of inquiry of described CSCF network element or acting server transmission;
503, described dns server sends to described CSCF network element or acting server with described up-to-date priority list, so that described sip terminal obtains described up-to-date priority list from described CSCF network element server or acting server, comprise the up-to-date priority of I P address and the described registrar of registrar in the described up-to-date priority list.
Wherein said up-to-date priority list is P2.
504, described CSCF network element or acting server receive the described up-to-date priority list that described dns server sends, and comprise the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
505, when the tabulation of the current priority on described CSCF network element or the acting server is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation.
When the tabulation of the current priority on described CSCF network element or the acting server is P1, inconsistent with described P2, then refresh P1 with P2.
506, within the current digestion period of described dns server, described sip terminal A sends for the session request of obtaining up-to-date priority list to described CSCF network element or acting server.
Described sip terminal A will set up session with sip terminal B, therefore sends the session request to described CSCF network element or acting server first.
507, when described CSCF network element or acting server receive that described sip terminal A sends be used for obtaining the session request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal.
Wherein in the response signaling that returns, comprise the dns-priority parameter, carry described P2 in the parameter.
508, described sip terminal receives the response signaling of described CSCF network element or acting server transmission, described response signaling comprises up-to-date priority list, and described up-to-date priority list comprises the up-to-date priority of the described registrar in IP address of registrar;
Described sip terminal A and B set up the session connection success, and obtain described P2.
509, when the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation.
When the P1 on the described sip terminal and P2 are inconsistent, use P2 to refresh P1.
The present embodiment provides passes through the session refreshing priority list, has the finer and closely woven refresh cycle, especially in the situation that the professional coexistence of large scale call can more effectively reduce the load of dns server, improves the dynamic property that the cluster load capacity is regulated.
The present invention is not limited to described signaling, also can the network element of other participations with sip terminal mutual in, the signaling of priority list is carried in the response of returning, such as the response of Subscribe, Notify, ACK, BYE, OPTIONS etc.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (17)
1. the method for an information updating is characterized in that, comprising:
The Session initiation Protocol sip terminal sends for the request of obtaining up-to-date priority list to the network element server;
Described sip terminal receives the response signaling that described network element server sends, and described response signaling comprises up-to-date priority list, and described up-to-date priority list comprises the IP address of registrar and the up-to-date priority of described registrar;
When the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation; Perhaps,
When the tabulation of the current priority on the described sip terminal is inconsistent with described up-to-date priority list, described sip terminal sends the instruction of query aim priority list to described dns server, the described target priority tabulation of returning when described dns server and described current priority are tabulated when inconsistent, use described target priority tabulation to refresh described current priority tabulation.
2. method according to claim 1, it is characterized in that, described network element server is the highest registrar of current priority tabulation medium priority, and described Session initiation Protocol sip terminal sends for the request of obtaining up-to-date priority list to the network element server and comprises:
Within the current digestion period of domain name system DNS server, described sip terminal is in the default refresh registration of described registrar in the cycle, send the registration request that is used for obtaining up-to-date priority list to described registrar, the described refresh registration cycle is less than described current digestion period.
3. method according to claim 1, it is characterized in that, described network element server is CSCF CSCF network element or acting server, and described Session initiation Protocol sip terminal sends for the request of obtaining up-to-date priority list to the network element server and comprises:
Described sip terminal sends for the session request of obtaining up-to-date priority list to described CSCF network element or acting server.
4. the method for an information updating is characterized in that, comprising:
The network element server sends the instruction of the up-to-date priority list of inquiry to described dns server with predetermined period;
Described network element server receives the described up-to-date priority list that described dns server sends, and comprises the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list;
When the tabulation of the current priority on the described network element server is inconsistent with described up-to-date priority list, use described up-to-date priority list to refresh described current priority tabulation;
When described network element server receive that the Session initiation Protocol sip terminal sends be used for obtaining the request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal.
5. method according to claim 4, it is characterized in that, described network element server is the highest registrar of current priority tabulation medium priority, described when described network element server receive that the Session initiation Protocol sip terminal sends be used for obtaining the request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal and comprise:
Within the current digestion period of domain name system DNS server, when described registrar default refresh registration receives in the cycle that described sip terminal sends when obtaining the registration request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal, the described refresh registration cycle is less than described current digestion period.
6. method according to claim 4, it is characterized in that, described network element server is CSCF CSCF network element or acting server, described when described network element server receive that the Session initiation Protocol sip terminal sends be used for obtaining the request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal and comprise:
When described CSCF network element or acting server receive that described sip terminal sends be used for obtaining the session request of up-to-date priority list the time, return the response signaling that carries described up-to-date priority list to described sip terminal.
7. the method for an information updating is characterized in that, comprising:
The domain name system DNS server receives the instruction of the up-to-date priority list of inquiry of network element server transmission;
Described dns server sends to described network element server with described up-to-date priority list, so that the Session initiation Protocol sip terminal obtains described up-to-date priority list from described network element server, comprise the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
8. method according to claim 7 is characterized in that, described method also comprises:
When described dns server received the instruction of the query aim priority list that described sip terminal sends, described dns server returned described target priority tabulation to described sip terminal.
9. a Session initiation Protocol sip terminal is characterized in that, comprising:
Transmitting element is used for sending for the request of obtaining up-to-date priority list to the network element server;
Receiving element is used for receiving the response signaling that described network element server sends, and described response signaling comprises up-to-date priority list, and described up-to-date priority list comprises the IP address of registrar and the up-to-date priority of described registrar;
Processing unit is used for using described up-to-date priority list to refresh described current priority tabulation when the current priority tabulation of self is inconsistent with described up-to-date priority list; Perhaps, be used for when the current priority tabulation of self is inconsistent with described up-to-date priority list, send the instruction of query aim priority list to described dns server, the described target priority tabulation of returning when described dns server and described current priority are tabulated when inconsistent, use described target priority tabulation to refresh described current priority tabulation.
10. terminal according to claim 9 is characterized in that, described network element server is the highest registrar of current priority tabulation medium priority,
Described transmitting element, concrete being used within the current digestion period of domain name system DNS server, described transmitting element is in the default refresh registration of described registrar in the cycle, send the registration request that is used for obtaining up-to-date priority list to described registrar, the described refresh registration cycle is less than described current digestion period.
11. terminal according to claim 9 is characterized in that, described network element server is CSCF CSCF network element or acting server,
Described transmitting element, concrete being used for sends for the session request of obtaining up-to-date priority list to described CSCF network element or acting server.
12. a network element server is characterized in that, comprising:
Transmitting element is used for sending to described dns server with predetermined period the instruction of the up-to-date priority list of inquiry;
Receiving element is used for receiving the described up-to-date priority list that described dns server sends, and comprises the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list;
Processing unit is used for using described up-to-date priority list to refresh described current priority tabulation when the current priority tabulation of self is inconsistent with described up-to-date priority list;
Response unit, be used for when receive that the Session initiation Protocol sip terminal sends when obtaining the request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal.
13. network element server according to claim 12 is characterized in that, described network element server is the highest registrar of current priority tabulation medium priority,
Described response unit, concrete being used within the current digestion period of domain name system DNS server, when receives in the cycle in default refresh registration that described sip terminal sends when obtaining the registration request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal, the described refresh registration cycle is less than described current digestion period.
14. network element server according to claim 12 is characterized in that, described network element server is CSCF CSCF network element or acting server,
Described response unit, concrete be used for when receive that described sip terminal sends when obtaining the session request of up-to-date priority list, return the response signaling that carries described up-to-date priority list to described sip terminal.
15. a domain name system DNS server is characterized in that, comprising:
Receiving element is used for the instruction of the up-to-date priority list of inquiry of reception network element server transmission;
Transmitting element, be used for described up-to-date priority list is sent to described network element server, so that the Session initiation Protocol sip terminal obtains described up-to-date priority list from described network element server, comprise the IP address of registrar and the up-to-date priority of described registrar in the described up-to-date priority list.
16. dns server according to claim 15 is characterized in that, also comprises:
Processing unit is used for returning described target priority to described sip terminal and tabulating when receiving the instruction of the query aim priority list that described sip terminal sends.
17. the system of an information updating is characterized in that, comprises the described Session initiation Protocol sip terminal of claim 9 to 11, the described network element server of claim 12 to 14 and the described domain name system DNS server of claim 15 to 16.
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| CN103312667B (en) | 2016-09-14 |
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