CN108243403A - A kind of method and I-CSCF network elements for controlling VoLTE user's registrations S-CSCF - Google Patents

A kind of method and I-CSCF network elements for controlling VoLTE user's registrations S-CSCF Download PDF

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Publication number
CN108243403A
CN108243403A CN201611218710.7A CN201611218710A CN108243403A CN 108243403 A CN108243403 A CN 108243403A CN 201611218710 A CN201611218710 A CN 201611218710A CN 108243403 A CN108243403 A CN 108243403A
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cscf
network elements
cscf network
target
uaa
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CN108243403B (en
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刘挺昕
刘遂江
黄梅英
张聪
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China Mobile Group Henan Co Ltd
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China Mobile Group Henan Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1046—Call controllers; Call servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention discloses the method for control VoLTE user's registration S CSCF a kind of and I CSCF network elements, method include：The query call conversation control function I CSCF network elements of IMS network obtain the target IMSI for the VoLTE user equipment (UE)s that REGISTER message carries after REGISTER message is received；Correspondence between the host name of service call conversation control function S CSCF network elements of the I CSCF network elements based on preconfigured IMSI and IMS network, determines the corresponding target S CSCF network elements of target IMSI；REGISTER message is sent to target S CSCF network elements by I CSCF network elements, to realize registration of the VoLTE user equipment (UE)s in target S CSCF network elements.Compared with the prior art, the present invention is registered to according to the correspondence between preconfigured IMSI information and S CSCF host name, control targe VoLTE user or user group on the S CSCF specified, the flexibility of enhancing VoLTE user's registrations to S CSCF.

Description

A kind of method and I-CSCF network elements for controlling VoLTE user's registrations S-CSCF
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of method and I- for controlling VoLTE user's registrations S-CSCF CSCF network elements.
Background technology
VoLTE (Voice over LTE, long term evolution voice) is based on IMS (Internet Protocol Multimedia Subsystem, IP multimedia subsystem) speech business.S-CSCF(Serving-Call Session Control Function, service call conversation control function) core status is in IMS network session control, it receives Pass through I-CSCF (Interrogating-Call Session Control Function, query call meeting from visited network Talk about control function) the next registration request of forwarding, with HSS (Home Subscriber Server, home signature user server) Cooperation carries out subscription authentication.And the business datum of user's signing is downloaded at HSS.Realization user equipment (User Equipment, UE) in the basic register flow path of IMS network.
In basic register flow path, UE reads USIM (Universal Subscriber Identity Module, the whole world Subscriber identification module) card information acquisition IMSI (International Mobile Subscriber Identification Number, international mobile subscriber identity), then from IMSI derive IMPI (IP Multimedia Private Identity, IP multimedia private identity) and IMPU (IP Multimedia Public Identity, IP multimedia public identity), to IMS Visited network entrance P-CSCF (Proxy-Call Session Control Funtion, Proxy Call Session Control Function) is sent out REGISTER (registration) message request is sent to register.P-CSCF is according to Request-URI (request address) head of REGISTER message Home network domain name inquiry DNS (Domain Name System, domain name system) server in domain, obtains home domain network and enters The IP address of mouth I-CSCF network elements forwards REGISTER message to the corresponding I-CSCF of the IP address.I-CSCF is received After REGISTER message, UAR (User Authorization Request, user-authorization-request) message is sent to HSS to look into Ask user registration state, the host name or capability set of acquisition request S-CSCF.HSS receives UAR message, according to local data base In user's registration information, judge that user is registered, then to I-CSCF send UAA (User Authorization Answer, User's authorization response) message, return to the host name or capability set of S-CSCF.
In ims, HSS is located at home network, for storing all and user and the relevant data of service, such as：User Identity, user registration state information, access parameter and service triggering information etc.；S-CSCF be IMS core where, S-CSCF In home network, conversate control and registration service for user；The login state of user includes three kinds：It is not established with network Unregistered (not registered) state of any connection, registered (registered) state and being established with network connects But that itself did not initiated registration process is called unregistered (unregistered) state.When UE exits network, such as mobile whole End shutdown can then trigger user and cancel request, after HSS receives user revocation request, which is stored in local Login state be changed to not registered states；After UE completes to register, user's registration request can be triggered, HSS is received After being asked to the user's registration, which is stored in local login state and is changed to registered states；When UE calleds Afterwards, SAR (Server Assignment Request, service configuration request) can be triggered, HSS receives the SAR from S-CSCF After message, which is stored in local login state and is changed to unregistered states.Here only illustrate the registration of UE When state changes, provide all carry out the change of login state in HSS according to agreement, i.e. HSS can be learnt, specific real Now reference can be made to related protocol.
It is provided according to agreement, after HSS receives the UAR message from I-CSCF, inquiry stores in the local database User's registration information, and the S-CSCF capability sets of return or the host name of S-CSCF are determined according to the current login states of UE.Such as The fruit UE also unallocated host name to S-CSCF, i.e. UE is in not registered states or I-CSCF is clearly asked During S-CSCF abilities, S-CSCF capability set information, which is carried in UAA, returns to I-CSCF；Otherwise, i.e., UE is in When registered states or unregistered states, UE has been assigned to S-CSCF, and the S-CSCF being assigned to is stored in In HSS, so at this point, the host name information of S-CSCF is carried in UAA and returns to I-CSCF.
A scheme one is in the prior art：When HSS returns to the host name of S-CSCF to I-CSCF, I-CSCF is according to S- CSCF host name, inquiry DNS obtain the IP address of S-CSCF, and REGISTER message is forwarded, and complete subsequent registration to S-CSCF Flow.
There are the following problems for the program：
It is each VoLTE user one S-CSCF host name of signing to need in HSS, and user data is more complicated, uses in batches When family adjusts, data volume is very big；And at present VoLTE IMS cores net form S-CSCF POOL by more S-CSCF, for The mode of one S-CSCF address of family static signing can not realize business disaster-tolerant recovery, and easily cause each S- in S-CSCFPOOL The load of CSCF is uneven, so the program is used currently without by existing net.
In addition, VoLTE register flow path scenes are divided into two kinds of scenes of initial registration and refresh registration, VoLTE user completes just Begin after registering (such as being turned back on after shutdown), the S-CSCF information of user's registration is registered in HSS, VoLTE user is follow-up Can periodically to S-CSCF initiate refresh registration, at this point, I-CSCF to HSS send UAR message, HSS also can by UAA message to I-CSCF returns to the S-CSCF host name information of user's registration.
In the prior art another scheme second is that：When HSS returns to the capability set of S-CSCF to I-CSCF, when a capability set A corresponding S-CSCF, I-CSCF obtain the IP address of S-CSCF, are forwarded to S-CSCF according to S-CSCF host name, inquiry DNS REGISTER message, and complete subsequent registration flow.The realization principle and advantage and disadvantage of the program are with scheme one, due to existing net VoLTE IMS cores net forms POOL by more S-CSCF, to promote internet security, so the program is currently without being showed Net uses.
Another scheme three is in the prior art：Being configured in I-CSCF can quantity set pass corresponding with S-CSCFPOOL titles System, when HSS returns to the capability set of S-CSCF to I-CSCF, I-CSCF determines the corresponding S-CSCF POOL titles of capability set, I- CSCF, by inquiring DNS, obtains the host name of every S-CSCF in S-CSCF POOL according to S-CSCFPOOL titles.I-CSCF Mechanism using load sharing taking turn distribution divides equally VoLTE user to every S-CSCF, and this treatment mechanism is difficult to will be specified User or user group are distributed to specified S-CSCF；Or calculated according to user's IMSI number using certain fixation algorithm, The user of jack per station feature can only fix registration by fixed allocation to different S-CSCF, this scheme, a VoLTE user To a S-CSCF, other S-CSCF (except under S-CSCF fault conditions) can not be registered to, flexibly VoLTE can not be controlled to use Family change of registration S-CSCF distributes designated user or user group to specified S-CSCF；On the other hand the algorithm is registered User's IMSI number limits, and easily causes each S-CSCF loads in S-CSCF POOL uneven, and can not carry out user's migration with flat It weighs the load of each S-CSCF.
Invention content
In view of the above problems, the present invention proposes the one kind for overcoming the above problem or solving the above problems at least partly Control the method and I-CSCF network elements of VoLTE user's registrations S-CSCF.
For this purpose, in a first aspect, the present invention proposes a kind of method for controlling VoLTE user's registrations S-CSCF, including：
The query call conversation control function I-CSCF network elements of internet protocol multi-media sub-system IMS network are receiving After registering REGISTER message, the target world movement for obtaining the VoLTE user equipment (UE)s that the REGISTER message carries is used Family identification code IMSI；
Service call conversation control function S- of the I-CSCF network elements based on preconfigured IMSI Yu the IMS network Correspondence between the host name of CSCF network elements determines the corresponding target S-CSCF network elements of the target IMSI；
The REGISTER message is sent to the target S-CSCF network elements by the I-CSCF network elements, with described in realization VoLTE user equipment (UE)s are in the registration of the target S-CSCF network elements.
Optionally, I-CSCF network elements further include after registration REGISTER message is received：
The I-CSCF network elements send user-authorization-request UAR message to home signature user server HSS, which disappears Cease the login state for inquiring the UE；
The I-CSCF network elements obtain the user's authorization response UAA first messages or UAA second messages of the HSS feedbacks；
Wherein, the UAA first messages carry the IMS for what the HSS was fed back after determining that the UE is unregistered The UAA message of the S-CSCF network element capability sets of network；The UAA second messages are the HSS after determining that the UE is registered The UAA message of the host name for carrying the registered S-CSCF network elements of the UE of feedback.
Optionally, if the I-CSCF network elements get the UAA first messages, the I-CSCF network elements are based on described The title in the corresponding S-CSCF network elements pond of S-CSCF network element capability sets, by nslookup system dns server, obtains the S- The host name of each S-CSCF in CSCF network elements pond.
Optionally, it is described determine the corresponding target S-CSCF network elements of the target IMSI after, further include：
The I-CSCF network elements determine whether the target S-CSCF network elements belong to the S-CSCF network elements pond, if so, It performs and described the REGISTER message is sent to the target S-CSCF network elements.
Optionally, it is described to determine IMSI pairs of the target if the I-CSCF network elements get the UAA second messages After the target S-CSCF network elements answered, further include：
The I-CSCF network elements determine whether the target S-CSCF network elements are the registered S-CSCF network elements of the UE, if It is then to perform described the REGISTER message to be sent to the target S-CSCF network elements.
Second aspect, the present invention also propose a kind of I-CSCF network elements, including：
First acquisition unit, for after registration REGISTER message is received, obtaining the REGISTER message and carrying VoLTE user equipment (UE)s target international mobile subscriber identity IMSI；
First determination unit, for the service call session control work(based on preconfigured IMSI Yu the IMS network Correspondence between the host name of energy S-CSCF network elements, determines the corresponding target S-CSCF network elements of the target IMSI；
First transmitting element, for the REGISTER message to be sent to the target S-CSCF network elements, to realize State registration of the VoLTE user equipment (UE)s in the target S-CSCF network elements.
Optionally, it further includes：
Second transmitting element, for after the first acquisition unit receives registration REGISTER message, being signed to ownership About client server HSS sends user-authorization-request UAR message, which is used to inquire the login state of the UE；
Second acquisition unit disappears for obtaining user's authorization response UAA first messages of the HSS feedbacks or UAA second Breath；
Wherein, the UAA first messages carry the IMS for what the HSS was fed back after determining that the UE is unregistered The UAA message of the S-CSCF network element capability sets of network；The UAA second messages are the HSS after determining that the UE is registered The UAA message of the host name for carrying the registered S-CSCF network elements of the UE of feedback.
Optionally, it further includes：
Third acquiring unit, for after the second acquisition unit gets the UAA first messages, based on the S- The title in the corresponding S-CSCF network elements pond of CSCF network element capability sets, by nslookup system dns server, obtains the S- The host name of each S-CSCF in CSCF network elements pond.
Optionally, it further includes：
Second determination unit, for determining the corresponding target S-CSCF nets of the target IMSI in first determination unit After member, determine whether the target S-CSCF network elements belong to the S-CSCF network elements pond；
Correspondingly, first transmitting element, for determining the target S-CSCF network elements in second determination unit After belonging to the S-CSCF network elements pond, the REGISTER message is sent to the target S-CSCF network elements, with described in realization VoLTE user equipment (UE)s are in the registration of the target S-CSCF network elements.
Optionally, it further includes：
Third determination unit, for getting the UAA second messages in the second acquisition unit, and described first is true After order member determines the corresponding target S-CSCF network elements of the target IMSI, determine whether the target S-CSCF network elements are described The registered S-CSCF network elements of UE；
Correspondingly, first transmitting element, for determining the target S-CSCF network elements in the third determination unit After the registered S-CSCF network elements of the UE, the REGISTER message is sent to the target S-CSCF network elements, with reality The existing VoLTE user equipment (UE)s are in the registration of the target S-CSCF network elements.
Compared with the prior art, the method and I-CSCF network elements of control VoLTE user's registrations S-CSCF proposed by the present invention, According to the correspondence of the IMSI information of preconfigured VoLTE user and S-CSCF host name information, control targe VoLTE is used Family or user group are migrated, and target VoLTE user or user group is made to be registered on the S-CSCF specified, enhance VoLTE user It is registered to the flexibility of S-CSCF.
Further, the present invention need not carry out being applied alone the adjustment of user data on HSS, it is only necessary to according to maintenance on I-CSCF It needs to perform an instruction, you can the quick registration adjustment for realizing single user or batch user.Greatly reduce user data tune Whole workload, and the preferable means that load balancing adjusts between each network element in S-CSCF POOL are provided.
Further, the method and I-CSCF network elements of control VoLTE user's registrations S-CSCF proposed by the present invention, is improved The location efficiency of VoLTE core net problems simplifies the difficulty of specified S-CSCF test calls, is convenient for VoLTE core nets and sets Standby load balancing.
Description of the drawings
Fig. 1 is the method flow diagram of a kind of control VoLTE user's registrations S-CSCF that first embodiment of the invention provides；
Fig. 2 is the method flow diagram of a kind of control VoLTE user's registrations S-CSCF that second embodiment of the invention provides；
Fig. 3 is the structure diagram of a kind of I-CSCF network elements that third embodiment of the invention provides.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention In attached drawing, the technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment be the present invention Part of the embodiment, instead of all the embodiments.
It should be noted that herein, the printed words such as " first ", " second ", " third " are used merely to identical title Distinguish rather than imply the relationship or sequence between these titles.
As shown in Figure 1, the present embodiment discloses a kind of method for controlling VoLTE user's registrations S-CSCF, it may include following step Rapid 101 to 103：
101st, internet protocol multi-media sub-system (Internet Protocol Multimedia Subsystem, IMS) query call conversation control function (Interrogating-Call Session the Control Function, I- of network CSCF) network element obtains the VoLTE user equipment (UE)s that the REGISTER message carries after registration REGISTER message is received Target international mobile subscriber identity (International Mobile Subscriber Identification Number, IMSI).
102nd, service call session control work(of the I-CSCF network elements based on preconfigured IMSI Yu the IMS network Correspondence between the host name of energy (Serving-Call Session Control Function, S-CSCF) network element, really Determine the corresponding target S-CSCF network elements of the target IMSI.
In the present embodiment, be provided in advance in I-CSCF network elements VoLTE UE IMSI and S-CSCF network element host name it Between correspondence, such as the mapping table of the host name of IMSI and S-CSCF network elements or IMSI number section and S-CSCF network elements Host name mapping table, which (such as safeguard need) can be pre-configured with according to actual needs.
103rd, the REGISTER message is sent to the target S-CSCF network elements by the I-CSCF network elements, to realize State registration of the VoLTE user equipment (UE)s in the target S-CSCF network elements.
As it can be seen that the method for the disclosed control VoLTE user's registrations S-CSCF of the present embodiment, according to preconfigured VoLTE The IMSI information of user and the correspondence of S-CSCF host name information, control targe VoLTE user or user group are migrated, Target VoLTE user or user group is made to be registered on the S-CSCF specified, enhancing VoLTE user's registrations are flexible to S-CSCF Property, overcome the defects of VoLTE core nets can not carry out specified S-CSCF registrations according to maintenance in the prior art.
In a specific example one, I-CSCF network elements described in step 101 shown in FIG. 1 are receiving registration After REGISTER message, unshowned step 101 in Fig. 1 is further included ' and 101 "：
101 ', the I-CSCF network elements are sent out to home signature user server (Home Subscriber Server, HSS) User-authorization-request (User Authorization Request, UAR) message is sent, which is used to inquire the UE's Login state.The login state of UE includes unregistered and registered.
101 ", the I-CSCF network elements obtain user's authorization response (User Authorization of the HSS feedbacks Answer, UAA) first message or UAA second messages；
Wherein, the UAA first messages carry the IMS for what the HSS was fed back after determining that the UE is unregistered The UAA message of the S-CSCF network element capability sets of network；The UAA second messages are the HSS after determining that the UE is registered The UAA message of the host name for carrying the registered S-CSCF network elements of the UE of feedback.
In the present embodiment, if HSS determines that the login state of UE is unregistered, judge that the register flow path that UE is initiated is initial Register flow path；If HSS determines that the login state of UE is registered, judge that the register flow path that UE is initiated is refresh registration flow.
Based on specific example one, in a specific example two, step 101 " in, if the I-CSCF network elements obtain To the UAA first messages, then the I-CSCF network elements are based on the corresponding S-CSCF network elements pond of the S-CSCF network elements capability set Title, by nslookup system (Domain Name System, DNS) server, obtain in the S-CSCF network elements pond The host name of each S-CSCF.S-CSCF network elements pond hereinafter can also be represented with S-CSCF POOL.
In the present embodiment, being provided in advance in I-CSCF network elements can quantity set and the correspondence of S-CSCF POOL titles.When I-CSCF network elements get the S-CSCF network element capability sets carried in the UAA first messages, and I-CSCF network elements can determine the energy The corresponding S-CSCFPOOL titles of power collection, and then I-CSCF network elements can be based on the S-CSCF POOL name query dns servers, Dns server returns to the S-CSCF host list of file names of the S-CSCF POOL, i.e. I-CSCF network elements can get the S-CSCF The host name of each S-CSCF in POOL.
Based on specific example two, determined in a specific example three, described in step 102 shown in FIG. 1 described After the corresponding target S-CSCF network elements of target IMSI, the unshowned steps 102 of Fig. 1 are further included '：
102 ', the I-CSCF network elements determine whether the target S-CSCF network elements belong to the S-CSCF network elements pond, if It is then to perform step 103.
In the present embodiment, step 102 ' in, if the target S-CSCF network elements are not belonging to the S-CSCF network elements pond, this When, I-CSCF can be used existing load sharing taking turn distribution or carry out S-CSCF points by the way of fixed algorithm according to IMSI With registration.
Based on specific example two and example three as it can be seen that during VoLTE user's initial registration, I-CSCF disappears according to REGISTER The IMSI information carried in breath carries out the matching analysis with the IMSI set in mapping table.It if being capable of successful match and right In the S-CSCF host list of file names that the S-CSCF host name answered is returned in inquiry DNS, REGISTER message is sent to what is specified S-CSCF.The S- that if IMSI cannot be matched or IMSI energy successful match but corresponding S-CSCF host name are not returned in inquiry DNS In CSCF host list of file names, then continue to distribute according to existing load sharing taking turn or according to IMSI by the way of fixed algorithm Carry out S-CSCF distribution registrations.
Based on specific example one, in a specific example four, step 101 " in, if the I-CSCF network elements obtain To the UAA second messages, then after the corresponding target S-CSCF network elements of the target IMSI are determined described in step 102, further include The unshowned steps 102 of Fig. 1 "：
102 ", the I-CSCF network elements determine whether the target S-CSCF network elements are the registered S-CSCF nets of the UE Member, if so, performing step 103.
In the present embodiment, step 102 ' in, if the target S-CSCF network elements are not the registered S-CSCF nets of the UE Member illustrates possible configuration mistake when mapping table is pre-configured with, at this point, I-CSCF network elements send the REGISTER message To the registered S-CSCF network elements of the UE, to realize that the UE is registered again in registered S-CSCF network elements.
Based on specific example four as it can be seen that during VoLTE user's refresh registration, I-CSCF is carried according in REGISTER message IMSI information, carry out the matching analysis with the IMSI that is set in mapping table.If can successful match, by REGISTER message It is sent to the S-CSCF specified.If IMSI cannot be matched, the REGISTER message of the VoLTE user is still sent to original annotation The S-CSCF of volume.
Based on the embodiment of the method for control VoLTE user's registrations S-CSCF disclosed above, it is exemplified below：
To control in VoLTE user A initial registration to S-CSCF POOL for S-CSCF1 (in wherein S-CSCF POOL Have 3 S-CSCF, be denoted as S-CSCF1, S-CSCF2 and S-CSCF3), with reference to Fig. 2, illustrate the tool that specified S-CSCF is registered Body flow.
It is described as follows：
Step 1, IMSI and the S-CSCF1 host name of VoLTE user equipment (UE)s A is pre-configured on I-CSCF network elements Mapping table.
Step 2, A initiates registration REGISTER message to I-CSCF network elements, and the IMSI that A is carried in REGISTER message believes Breath；
Step 3, I-CSCF network elements send UAR message, the capability set of acquisition request A home domain S-CSCF to HSS.
Step 4, HSS returns to UAA message, includes the capability set of user A signing S-CSCF POOL.
Step 5, I-CSCF network elements obtain S-CSCF POOL host name according to capability set.
Step 6, I-CSCF network elements inquire dns server according to S-CSCF POOL host name.
Step 7, dns server returns to 3 S-CSCF host name in S-CSCF POOL.
Step 8, the mapping table being configured in I-CSCF network elements query steps 1, matching A, which is specified, is registered to S-CSCF1.
Step 9, the REGISTER message of A is sent to S-CSCF1 by I-CSCF network elements.
Continue subsequent registration flow, A completes the registration in S-CSCF1.Subsequent registration flow can be found in related protocol, The present embodiment repeats no more.
As it can be seen that the method for the disclosed control VoLTE user's registrations S-CSCF of embodiment, it is only necessary to match in advance in I-CSCF The correspondence of the IMSI information of the VoLTE user put and S-CSCF host name information simultaneously matches the IMSI of registered user Analysis, you can the VoLTE user flexibilities that control IMSI information matches are registered in the S-CSCF specified.And existing load point Load scheme needs user that switching on and shutting down registration operation is repeated, and distributes all VoLTE users since I-CSCF carries out polling, at random Property is very strong, and S-CSCF quantity is more in S-CSCF POOL, and the probability for being registered to specified S-CSCF is lower.Existing fixation Algorithm arrangement, VoLTE user is according to its IMSI number by fixed allocation to fixed S-CSCF, it is desirable to be registered to specified S-CSCF Possibility smaller.The method of the disclosed control VoLTE user's registrations S-CSCF of embodiment, is used according to preconfigured VoLTE The IMSI information at family and the correspondence of S-CSCF host name information, control targe VoLTE user or user group are migrated, are made Target VoLTE user or user group are registered on the S-CSCF specified, the flexibility of enhancing VoLTE user's registrations to S-CSCF, Overcome the defects of VoLTE core nets can not carry out specified S-CSCF registrations according to maintenance in the prior art.
Further, the method for the disclosed control VoLTE user's registrations S-CSCF of embodiment, is applied alone without carrying out on HSS The adjustment of user data, it is only necessary to need to perform an instruction to be pre-configured with mapping table, i.e., according to maintenance on I-CSCF It can quickly realize single user or the registration adjustment of batch user.The workload of user data adjustment is greatly reduced, and S- is provided The preferable means that load balancing adjusts between each network element in CSCFPOOL.
Further, the method for the disclosed control VoLTE user's registrations S-CSCF of embodiment, improves VoLTE core nets and asks The location efficiency of topic specifies assignment test and the problem repetition of network element convenient for VoLTE networks；Simplify specified S-CSCF test calls Difficulty, the load balancing of VoLTE equipments of the core network is convenient for, convenient for being directed to the situation of load unevenness in S-CSCF POOL It carries out user and migrates equilibrium.
As shown in figure 3, the present embodiment discloses a kind of I-CSCF network elements, it may include with lower unit：First acquisition unit 31, One determination unit 32 and the first transmitting element 33, each unit is described as follows：
First acquisition unit 31, for after registration REGISTER message is received, obtaining the REGISTER message and taking The target international mobile subscriber identity IMSI of the VoLTE user equipment (UE)s of band；
First determination unit 32, for the service call session control based on preconfigured IMSI Yu the IMS network Correspondence between the host name of function S-CSCF network elements determines the corresponding target S-CSCF network elements of the target IMSI；
First transmitting element 33, for the REGISTER message to be sent to the target S-CSCF network elements, to realize The VoLTE user equipment (UE)s are in the registration of the target S-CSCF network elements.
I-CSCF network elements disclosed in the present embodiment are, it can be achieved that the method for control VoLTE user's registrations S-CSCF shown in FIG. 1 Flow, therefore, the effect and explanation of the I-CSCF network elements in the present embodiment can be found in embodiment of the method shown in FIG. 1, herein not It repeats again.
In a specific example, I-CSCF network elements shown in Fig. 3 further include unshowned second transmitting elements 34 of Fig. 3 With second acquisition unit 35：
Second transmitting element 34, for after the first acquisition unit 31 receives registration REGISTER message, to returning Belong to assigned user server HSS and send user-authorization-request UAR message, which is used to inquire the login state of the UE；
Second acquisition unit 35, for obtaining the user's authorization response UAA first messages or UAA second of the HSS feedbacks Message；
Wherein, the UAA first messages carry the IMS for what the HSS was fed back after determining that the UE is unregistered The UAA message of the S-CSCF network element capability sets of network；The UAA second messages are the HSS after determining that the UE is registered The UAA message of the host name for carrying the registered S-CSCF network elements of the UE of feedback.
In a specific example, I-CSCF network elements shown in Fig. 3 further include the unshowned third acquiring units of Fig. 3 36：
Third acquiring unit 36, for after the second acquisition unit 35 gets the UAA first messages, based on institute The title in the corresponding S-CSCF network elements pond of S-CSCF network element capability sets is stated, by nslookup system dns server, described in acquisition The host name of each S-CSCF in S-CSCF network elements pond.
In a specific example, I-CSCF network elements shown in Fig. 3 further include unshowned second determination units of Fig. 3 37：
Second determination unit 37, for determining the corresponding target S- of the target IMSI in first determination unit 32 After CSCF network elements, determine whether the target S-CSCF network elements belong to the S-CSCF network elements pond；
Correspondingly, first transmitting element 33, for determining the target S-CSCF in second determination unit 37 After network element belongs to the S-CSCF network elements pond, the REGISTER message is sent to the target S-CSCF network elements, to realize The VoLTE user equipment (UE)s are in the registration of the target S-CSCF network elements.
In a specific example, I-CSCF network elements shown in Fig. 3 further include the unshowned third determination units of Fig. 3 38：
Third determination unit 38, for getting the UAA second messages, and described in the second acquisition unit 37 After one determination unit determines the corresponding target S-CSCF network elements of the target IMSI, determine the target S-CSCF network elements whether be The registered S-CSCF network elements of UE；
Correspondingly, first transmitting element 33, for determining the target S-CSCF in the third determination unit 38 Network element be the registered S-CSCF network elements of the UE after, the REGISTER message is sent to the target S-CSCF network elements, To realize registration of the VoLTE user equipment (UE)s in the target S-CSCF network elements.
As it can be seen that I-CSCF network elements disclosed in embodiment, it is only necessary to the IMSI of preconfigured VoLTE user in I-CSCF The correspondence of information and S-CSCF host name information simultaneously carries out the matching analysis to the IMSI of registered user, you can control IMSI letters The matched VoLTE user flexibilities of manner of breathing are registered in the S-CSCF specified.And existing load sharing scheme needs user repeatedly Switching on and shutting down registration operation is carried out, distributes all VoLTE users since I-CSCF carries out polling, randomness is very strong, and S-CSCF S-CSCF quantity is more in POOL, and the probability for being registered to specified S-CSCF is lower.Existing fixed algorithm arrangement, VoLTE user According to its IMSI number by fixed allocation to fixed S-CSCF, it is desirable to be registered to the possibility smaller of specified S-CSCF.Implement The method of the disclosed control VoLTE user's registrations S-CSCF of example, according to the IMSI information and S- of preconfigured VoLTE user The correspondence of CSCF host name information, control targe VoLTE user or user group are migrated, make target VoLTE user or User group is registered on the S-CSCF specified, and enhancing VoLTE user's registrations overcome in the prior art to the flexibility of S-CSCF VoLTE core nets can not carry out the defects of specified S-CSCF is registered according to safeguarding.
Further, I-CSCF network elements disclosed in embodiment, without be applied alone on HSS the adjustment of user data, it is only necessary to It is needed to perform an instruction according to maintenance to be pre-configured with mapping table on I-CSCF, you can quick to realize single user or criticize Measure the registration adjustment of user.The workload of user data adjustment is greatly reduced, and provides in S-CSCF POOL and is born between each network element Carry the preferable means of balanced adjustment.
Further, I-CSCF network elements disclosed in embodiment improve the location efficiency of VoLTE core net problems, are convenient for VoLTE networks specify assignment test and the problem repetition of network element；Simplify the difficulty of specified S-CSCF test calls, be convenient for The load balancing of VoLTE equipments of the core network carries out user's migration convenient for being directed to the situation of load unevenness in S-CSCF POOL Weighing apparatus.
It will be understood by those skilled in the art that each unit in embodiment can be combined into a unit and in addition Multiple subelements can be divided into.In addition to such feature and/or at least some of process or unit are to arrange mutually Reprimand part may be used any combinations to all features disclosed in this specification and such disclosed any method or set Standby all processes or unit are combined.Unless expressly stated otherwise, each feature disclosed in this specification can be by carrying It is replaced for the alternative features of identical, equivalent or similar purpose.
It will be appreciated by those of skill in the art that although some embodiments described herein include being wrapped in other embodiments The certain features rather than other feature included, but the combination of the feature of different embodiment mean in the scope of the present invention it It is interior and form different embodiments.
It will be understood by those skilled in the art that each unit in embodiment can with hardware realization or at one or The software module run on the multiple processors of person is realized or is realized with combination thereof.Those skilled in the art should manage Solution, can realize according to embodiments of the present invention one using microprocessor or digital signal processor (DSP) in practice The some or all functions of a little or whole components.The present invention is also implemented as performing method as described herein Some or all equipment or program of device (for example, computer program and computer program product).
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair Various modifications and variations are made in the case of bright spirit and scope, such modifications and variations are each fallen within by appended claims Within limited range.

Claims (10)

  1. A kind of 1. method for controlling VoLTE user's registrations S-CSCF, which is characterized in that including：
    The query call conversation control function I-CSCF network elements of internet protocol multi-media sub-system IMS network are receiving registration After REGISTER message, the target international mobile subscriber for obtaining the VoLTE user equipment (UE)s that the REGISTER message carries is known Other code IMSI；
    Service call conversation control function S-CSCF of the I-CSCF network elements based on preconfigured IMSI Yu the IMS network Correspondence between the host name of network element determines the corresponding target S-CSCF network elements of the target IMSI；
    The REGISTER message is sent to the target S-CSCF network elements by the I-CSCF network elements, to realize the VoLTE User equipment (UE) is in the registration of the target S-CSCF network elements.
  2. 2. according to the method described in claim 1, it is characterized in that, I-CSCF network elements are receiving registration REGISTER message Afterwards, it further includes：
    The I-CSCF network elements send user-authorization-request UAR message to home signature user server HSS, which uses In the login state for inquiring the UE；
    The I-CSCF network elements obtain the user's authorization response UAA first messages or UAA second messages of the HSS feedbacks；
    Wherein, the UAA first messages carry the IMS network for what the HSS was fed back after determining that the UE is unregistered S-CSCF network element capability sets UAA message；The UAA second messages are fed back for the HSS after determining that the UE is registered The host name for carrying the registered S-CSCF network elements of the UE UAA message.
  3. 3. if according to the method described in claim 2, it is characterized in that, the I-CSCF network elements get the UAA first disappears Breath, then title of the I-CSCF network elements based on the corresponding S-CSCF network elements pond of the S-CSCF network elements capability set, passes through inquiry Domain name system DNS server obtains the host name of each S-CSCF in the S-CSCF network elements pond.
  4. 4. according to the method described in claim 3, it is characterized in that, described determine the corresponding target S-CSCF of the target IMSI After network element, further include：
    The I-CSCF network elements determine whether the target S-CSCF network elements belong to the S-CSCF network elements pond, if so, performing It is described that the REGISTER message is sent to the target S-CSCF network elements.
  5. 5. if according to the method described in claim 2, it is characterized in that, the I-CSCF network elements get the UAA second disappears Breath, then it is described determine the corresponding target S-CSCF network elements of the target IMSI after, further include：
    The I-CSCF network elements determine whether the target S-CSCF network elements are the registered S-CSCF network elements of the UE, if so, It then performs and described the REGISTER message is sent to the target S-CSCF network elements.
  6. 6. a kind of I-CSCF network elements, which is characterized in that including：
    First acquisition unit, for after registration REGISTER message is received, obtaining what the REGISTER message carried The target international mobile subscriber identity IMSI of VoLTE user equipment (UE)s；
    First determination unit, for the service call conversation control function S- based on preconfigured IMSI Yu the IMS network Correspondence between the host name of CSCF network elements determines the corresponding target S-CSCF network elements of the target IMSI；
    First transmitting element, for the REGISTER message to be sent to the target S-CSCF network elements, with described in realization VoLTE user equipment (UE)s are in the registration of the target S-CSCF network elements.
  7. 7. I-CSCF network elements according to claim 6, which is characterized in that further include：
    Second transmitting element, for after the first acquisition unit receives registration REGISTER message, being used to ownership signing Family server HSS sends user-authorization-request UAR message, which is used to inquire the login state of the UE；
    Second acquisition unit, for obtaining the user's authorization response UAA first messages or UAA second messages of the HSS feedbacks；
    Wherein, the UAA first messages carry the IMS network for what the HSS was fed back after determining that the UE is unregistered S-CSCF network element capability sets UAA message；The UAA second messages are fed back for the HSS after determining that the UE is registered The host name for carrying the registered S-CSCF network elements of the UE UAA message.
  8. 8. I-CSCF network elements according to claim 7, which is characterized in that further include：
    Third acquiring unit, for after the second acquisition unit gets the UAA first messages, based on the S-CSCF The title in the corresponding S-CSCF network elements pond of network element capability set by nslookup system dns server, obtains the S-CSCF nets The host name of each S-CSCF in first pond.
  9. 9. I-CSCF network elements according to claim 8, which is characterized in that further include：
    Second determination unit, for determining the corresponding target S-CSCF network elements of the target IMSI in first determination unit Afterwards, determine whether the target S-CSCF network elements belong to the S-CSCF network elements pond；
    Correspondingly, first transmitting element, for determining that the target S-CSCF network elements belong in second determination unit Behind the S-CSCF network elements pond, the REGISTER message is sent to the target S-CSCF network elements, to realize the VoLTE User equipment (UE) is in the registration of the target S-CSCF network elements.
  10. 10. I-CSCF network elements according to claim 7, which is characterized in that further include：
    Third determination unit, for getting the UAA second messages in the second acquisition unit, and described first determines list After member determines the corresponding target S-CSCF network elements of the target IMSI, determine the target S-CSCF network elements whether be the UE The S-CSCF network elements of registration；
    Correspondingly, first transmitting element, for determining the target S-CSCF network elements for institute in the third determination unit After stating the registered S-CSCF network elements of UE, the REGISTER message is sent to the target S-CSCF network elements, to realize State registration of the VoLTE user equipment (UE)s in the target S-CSCF network elements.
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