CN111836250B - Terminal calling method, system, computer equipment and storage medium - Google Patents
Terminal calling method, system, computer equipment and storage medium Download PDFInfo
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- 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
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Abstract
The present disclosure provides a terminal calling method, a home S-CSCF, a visited HLR, a roaming S-CSCF, a calling system, a computer device and a readable storage medium, the method includes: the home location S-CSCF receives a call request of the terminal, and the called number of the home location S-CSCF is a number in a PLMN network of a visit location; sending a query request to an HLR of a visited PLMN network according to the call request, and querying the current roaming position information of the called party; receiving the called roaming location information returned by the HLR; inquiring an S-CSCF in an IMS network of a called roaming place according to the position information of the called roaming; and sending the call request to the S-CSCF in the IMS network of the called roaming place, so that the S-CSCF in the IMS network of the called roaming place completes the call. The technical scheme disclosed by the invention can fully utilize the IMS network to carry the telephone traffic, reduce the resource consumption of the PLMN network and reduce the cost.
Description
Technical Field
The present disclosure belongs to the field of communication technology, and in particular relates to a terminal calling method, an S-CSCF entity of a calling number home, an HLR in a visited PLMN network, an S-CSCF entity in an IMS network of a called number roaming place, a terminal calling system, a computer device, and a computer-readable storage medium.
Background
The IMS (IP Multimedia Subsystem) technology, an IP Multimedia Subsystem technology, is proposed by the 3GPP (3 rd Generation Partnership Project) standards organization on the basis of release R5, and is a general network architecture for providing Multimedia services over IP-based networks. The IMS is composed of functional entities such as CSCF (Call Session Control Function), MGCF (Media Gateway Control Function), MGW (Media Gateway), and HSS (Home Subscriber Server). The types of CSCF include P-CSCF (Proxy-CACF, proxy call Session control function), I-CSCF (Interrogating CSCF), and S-CSCF (Serving CSCF), which are SIP (Session Initiation Protocol) servers in nature and process SIP signaling.
The P-CSCF is a first step of a UE (User Equipment) contacting the IMS, and is a point that the UE first needs to access in a visited domain (when roaming), and incoming and outgoing SIP messages all need to pass through the P-CSCF; the P-CSCF behaves as a border proxy server as defined by the SIP protocol. The function of the I-CSCF is to provide an entrance to the home network, hide the topological graph of the home network from other networks, and find out the corresponding S-CSCF for a specific user through HSS; it is the point of contact where the user terminal roams or otherwise enters the home service provider network for an alien task. When the I-CSCF receives a request, it routes the request to the corresponding S-CSCF, which provides the service to the user. When the terminal registers, it contacts the S-CSCF of the local domain, which provides the user with the services subscribed to by the user. This has the advantage that the user can get the required service as if he is local, even if he roams to a network that does not support a certain service. The HSS corresponds to the HLR (Home Location Register) in the 2G network, storing the S-CSCF associated with an individual subscriber and the corresponding subscriber profile.
Currently, the routing of an IMS Network to a PLMN (Public Land Mobile Network) Network may follow two principles: "enter the PLMN network nearby" and "enter the PLMN network far away". When the IMS user calls the PLMN user, the S-CSCF to which the IMS user belongs fails to perform ENUM (e.164number URI Mapping) server query (indicating that the called user is a non-IMS user), routes the call to an MGCF (Media Gateway Control Function) that controls a MGW (Media Gateway) at a calling location, and addresses the called PLMN user through a mobile Gateway office of the PLMN network when the MGCF determines that the called user is a PLMN user. When the user ' S terminal is far away from the PLMN network ', the IMS user calls the PLMN user, after the IMS user ' S home S-CSCF fails to inquire the ENUM server, the call is routed to the S-CSCF of the IMS network in the called location through called number analysis, the S-CSCF routes the call to the MGCF in the called location, and when the MGCF judges that the called user is the PLMN user, the called PLMN user is addressed through a mobile gateway office of the PLMN network.
When the called mobile terminal is in roaming state, the PLMN user is addressed through the mobile gateway of the PLMN network, the mobile gateway of the PLMN network of the roaming place of the user needs to be inquired in the mobile gateway of the PLMN network of the home place, the PLMN user roams to the mobile gateway of the PLMN network of the roaming place for a long distance, and then the PLMN user is addressed by the mobile gateway of the PLMN network of the roaming place. Thus, "going far into the PLMN network" may present a speech path detour problem when the user is roaming. Moreover, both "enter PLMN network nearby" and "enter PLMN network far away" have the problem that the IMS network cannot be fully utilized to carry traffic, and resources of the PLMN circuit network are more consumed. The cost is more expensive and is not suitable for the requirement of the network development trend.
Disclosure of Invention
The present disclosure provides a terminal calling method, a calling number attribution S-CSCF entity, an HLR in a visiting place PLMN network, an S-CSCF entity in a called number roaming place IMS network, a terminal calling system, a computer device and a computer readable storage medium, which can ensure that when an IMS terminal calls a roaming PLMN user, telephone traffic is mainly borne on the IMS network, reduce charge and adapt to the network development trend.
In a first aspect, an embodiment of the present disclosure provides a terminal calling method, applied to a calling number home service call session control function S-CSCF entity, including:
receiving a call request of a terminal, wherein a called number in the call request is a number in a Public Land Mobile Network (PLMN) network of a visited place;
sending a query request to a Home Location Register (HLR) in a visited PLMN network according to the call request so that the HLR queries the current roaming location information of the called number according to the query request;
receiving the current roaming position information of the called number returned by the HLR;
inquiring an S-CSCF entity in an IP multimedia subsystem technology IMS network of a roaming place of the called number according to the current roaming position information of the called number;
and sending the call request to an S-CSCF entity in the IMS network of the called number roaming place so as to enable the S-CSCF entity in the IMS network of the called number roaming place to complete the call based on the call request.
Further, before receiving the call request of the terminal, the method further includes:
receiving a registration message sent by a terminal, and responding to the registration message to complete the registration of the terminal;
the call request of the receiving terminal comprises
Receiving a call request sent by a terminal through a calling number home location proxy call session control function (P-CSCF) entity, wherein the call request is a request which is sent by the terminal through the calling number home location P-CSCF entity and is used for calling a number in a visited PLMN network after the terminal completes registration at the calling number home location S-CSCF entity.
In a second aspect, an embodiment of the present disclosure provides a terminal call method, applied to a home location register HLR in a PLMN network of a visited public land mobile network, including:
receiving a query request sent by a calling number home location service call session control function (S-CSCF) entity according to a call request, wherein the call request is sent to the calling number home location S-CSCF entity by a terminal, and a called number in the call request is a number in a visited location Public Land Mobile Network (PLMN);
inquiring the current roaming position information of the called number in the call request according to the inquiry request;
and sending the current roaming position information of the called number to an S-CSCF entity of a calling number attribution so as to enable the S-CSCF entity of the calling number attribution to inquire out an S-CSCF entity in an IP multimedia subsystem technology IMS network of the called number roaming area according to the current roaming position information of the called number, and sending the call request to the S-CSCF entity in the IMS network of the called number roaming area so as to enable the S-CSCF entity in the IMS network of the called number roaming area to complete the call based on the call request.
In a third aspect, an embodiment of the present disclosure provides a terminal call method, applied to a serving call session control function S-CSCF entity in an IP multimedia subsystem technology IMS network in a called number roaming area, including:
receiving a call request sent by a calling number home location S-CSCF entity, wherein a called number in the call request is a number of a Public Land Mobile Network (PLMN) network of a visited place, and the calling number home location S-CSCF entity queries an S-CSCF entity in an IMS network of the called number roaming place according to the current roaming position information of the called number; and the number of the first and second groups,
completing the call based on the call request.
Further, the completing the call based on the call request includes:
after receiving the call request, sending the call request to a Media Gateway Control Function (MGCF) entity of a called number roaming place, so that the MGCF entity of the called number roaming place sends the call request to a mobile gateway office of the called number roaming place of a PLMN network of the called number roaming place, addresses the called number through the mobile gateway office of the called number roaming place, and completes the call based on the call request.
In a fourth aspect, an embodiment of the present disclosure provides a calling number home service call session control function S-CSCF entity, where the calling number home S-CSCF entity includes a first receiving module, a first sending module, and a first querying module;
the first receiving module is set to receive a calling request of a terminal, and a called number in the calling request is a number in a Public Land Mobile Network (PLMN) network of a visited place;
the first sending module is set to send a query request to a Home Location Register (HLR) in a visited PLMN network according to the call request so that the HLR queries the current roaming location information of the called number according to the query request
The first receiving module is also configured to receive the current roaming location information of the called number returned by the HLR;
the first query module is set to query an S-CSCF entity in an IP multimedia subsystem technology IMS network of a roaming place of the called number according to the current roaming position information of the called number;
the first sending module is further configured to send the call request to an S-CSCF entity in the IMS network of the called number roaming place, so that the S-CSCF entity in the IMS network of the called number roaming place completes the call based on the call request.
In a fifth aspect, an embodiment of the present disclosure provides a home location register HLR in a visited public land mobile network PLMN network, where the HLR in the visited PLMN network includes a second receiving module, a second querying module, and a second sending module;
the second receiving module is configured to receive a query request sent by a calling number home location service call session control function (S-CSCF) entity according to a call request, wherein the call request is sent to the calling number home location S-CSCF entity by a terminal, and a called number in the call request is a number in a visited PLMN network;
the second query module is set to query the current roaming position information of the called number in the call request according to the query request;
the second sending module is configured to send the currently roaming location information of the called number to the S-CSCF entity at the home of the calling number, so that the S-CSCF entity at the home of the calling number queries the S-CSCF entity in the IMS network of the IP multimedia subsystem technology at the roaming location of the called number according to the currently roaming location information of the called number, and sends the call request to the S-CSCF entity in the IMS network at the roaming location of the called number, so that the S-CSCF entity in the IMS network at the roaming location of the called number completes the call based on the call request.
In a sixth aspect, an embodiment of the present disclosure provides a serving call session control function S-CSCF entity in an IMS network based on a called number roaming destination IP multimedia subsystem, where the S-CSCF entity in the IMS network includes a third receiving module and a call module;
the third receiving module is configured to receive a call request sent by a calling number home location S-CSCF entity, where a called number in the call request is a number of a Public Land Mobile Network (PLMN) network of a visited place, and the calling number home location S-CSCF entity queries an S-CSCF entity in an IMS network of the called number roaming place according to current roaming location information of the called number;
the call module is configured to complete a call based on the call request.
In a seventh aspect, an embodiment of the present disclosure provides an IP multimedia subsystem IMS terminal call system, where the system includes: a calling number home serving call session control function S-CSCF entity as in the fourth aspect, a home location register HLR in a visited public land mobile network PLMN network as in the fifth aspect, and a serving call session control function S-CSCF entity in a called number roaming IP multimedia subsystem technology IMS network as in the sixth aspect.
In an eighth aspect, the embodiment of the present disclosure further provides a computer device, which includes a memory and a processor, where the memory stores a computer program, and when the processor runs the computer program stored in the memory, the processor executes the terminal call method according to any one of the first aspect, the second aspect, and the third aspect.
In a ninth aspect, embodiments of the present disclosure further provide a computer-readable storage medium, including: computer program which, when run on a computer, causes the computer to perform a terminal call method as described in any one of the first, second and third aspects.
Has the beneficial effects that:
the terminal calling method, the calling number attribution S-CSCF entity, the visited place HLR entity, the called number roaming place S-CSCF entity in the IMS network, the terminal calling system, the computer equipment and the readable storage medium are provided by the present disclosure, the calling request of the terminal is received through the calling number attribution S-CSCF entity, and the called number in the calling request is the number in the visited place PLMN network; sending a query request to an HLR in a visited PLMN network according to the call request so that the HLR queries the current roaming position information of the called number according to the query request; receiving the current roaming position information of the called number returned by the HLR; inquiring an S-CSCF entity in an IMS network of a roaming place of the called number according to the current roaming position information of the called number; and sending the call request to an S-CSCF entity in the IMS network of the called number roaming place so as to enable the S-CSCF entity in the IMS network of the called number roaming place to complete the call based on the call request. The technical scheme of the present disclosure queries a called roaming place from an HLR of a visiting place through an S-CSCF entity of a calling number home place, then sends a call request to an S-CSCF of an IMS network of the called number roaming place, and the S-CSCF of the roaming place completes a subsequent call flow.
Drawings
Fig. 1 is a flowchart of a terminal calling method according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a terminal calling method according to a second embodiment of the disclosure;
fig. 3 is a flowchart of a terminal calling method according to a third embodiment of the disclosure;
fig. 4 is an architecture diagram of an S-CSCF entity of a calling number home according to a fourth embodiment of the present disclosure;
fig. 5 is an architecture diagram of an HLR entity in a visited PLMN network according to a fifth embodiment of the present disclosure;
fig. 6 is an architecture diagram of an S-CSCF entity in an IMS network where a called number roams according to a sixth embodiment of the present disclosure;
fig. 7 is an architecture diagram of a terminal call system according to a seventh embodiment of the disclosure.
Detailed Description
In order to make the technical solutions of the present disclosure better understood, the present disclosure is further described in detail below with reference to the accompanying drawings and examples.
Wherein the terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in the disclosed embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
At present, when an IMS terminal calls a roaming PLMN network subscriber, a mobile gateway of the PLMN network of the subscriber roaming destination needs to be queried in a mobile gateway of a home PLMN network, and the mobile gateway of the PLMN network of the roaming destination roams for a long distance, and then the mobile gateway of the PLMN network of the roaming destination addresses the called PLMN subscriber. The roaming process is carried in the PLMN network, the IMS network is not fully utilized to carry telephone traffic, and resources of the PLMN circuit network are more consumed; resulting in unstable call quality and expensive charges.
The following describes the technical solutions of the present disclosure and how to solve the above technical problems in specific embodiments. These several specific embodiments may be combined with each other below, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a terminal calling method provided in an embodiment of the present disclosure, which is applied to a calling number home service call session control function S-CSCF entity, and as shown in fig. 1, the method includes:
step S101: receiving a call request of a terminal, wherein a called number in the call request is a number in a Public Land Mobile Network (PLMN) network of a visited place;
step S102: sending a query request to a Home Location Register (HLR) in a visited PLMN network according to the call request so that the HLR queries the current roaming location information of the called number according to the query request;
step S103: receiving the current roaming position information of the called number returned by the HLR;
step S104: inquiring an S-CSCF entity in an IP multimedia subsystem technology IMS network of a roaming place of the called number according to the current roaming position information of the called number;
step S105: and sending the call request to an S-CSCF entity in the IMS network of the called number roaming place so that the S-CSCF entity in the IMS network of the called number roaming place completes the call based on the call request.
The 3GPP standard organization mainly defines the core structure, network element function, interface, flow and other contents of the IMS in the R5 version; the R6 version perfects the IMS, and adds partial IMS service characteristics, the intercommunication specification of the IMS and other networks, WLAN (Wireless Local Area Network) access and other characteristics; r7 strengthens standardization of fixed and mobile convergence, and requires IMS to support fixed access modes such as xDSL (x Digital Subscriber Line), cable (cable television cable), and the like. The aim of IMS is to enable various types of terminals to establish an IP connection through which the terminals can communicate various information, including voice, pictures, video, files, etc., with each other. IMS can be said to implement end-to-end multimedia services over IP networks. The terminal of the IMS system may be a mobile terminal, a fixed telephone terminal, a multimedia terminal, a PC, etc., and the access method is not limited to a cellular radio interface, and may be a wireless WCDMA, or wired LAN, xDSL, etc. technologies. Therefore, IMS as a future-oriented communication architecture has an important meaning for the convergence of fixed and mobile access methods.
A PLMN Network is a Network established and operated by a government or an operator approved by the government for the purpose of providing land Mobile communication services to the public, which must be interconnected with a public switched telephone Network PSTN to form a communication Network of a whole area or Country scale, PLMN = MCC (Mobile Country Code) + MNC (Mobile Network Code), and PLMN is a wireless communication system intended for land-oriented users moving by means of transportation or walking.
In the following embodiments, a calling party represents a calling number, a called party represents a called number, an attribution represents an attribution of the calling number, and a roaming place represents a roaming place of the called number, and the embodiment of the present embodiment is applied to a PLMN user scenario in which an IMS terminal calls a roaming, and when the IMS terminal calls a PLMN user, a call request is sent to an S-CSCF of an IMS network to which the calling party belongs, and the called PLMN user is addressed from a mobile gateway office of a PLMN network at the location of the calling party without adopting a "near-to-PLMN network" manner; or the called PLMN user is addressed from the mobile gateway exchange of the PLMN network of the called home location by adopting a mode of just going far into the PLMN network; the method comprises the steps that an HLR in a visiting place PLMN network inquires a called roaming place through an S-CSCF in a calling home location according to a call request, the call request is routed to the S-CSCF in the IMS network of the called roaming place, the roaming process is controlled to be carried in the IMS network, the S-CSCF in the IMS network of the called roaming place is routed to an MGCF entity in the roaming place, the call request is sent to a mobile gateway office in the called roaming place of the PLMN network, and a called user is addressed to complete the call.
Further, before receiving the call request of the terminal, the method further includes:
receiving a registration message sent by a terminal, and responding to the registration message to complete the registration of the terminal;
the call request of the receiving terminal comprises
Receiving a call request sent by a terminal through a calling number home location proxy call session control function (P-CSCF) entity, wherein the call request is a request which is sent by the terminal through the calling number home location P-CSCF entity and is used for calling a number in a visited PLMN network after the terminal completes registration at the calling number home location S-CSCF entity.
The terminal registration is to store the binding relationship between the IP address of the UE and the IMPU (IP Multimedia Public Identity) in the IMS system, and the registration includes a bidirectional authentication procedure between the UE and the network, which is the same as the existing IMS network user registration procedure, and is not described here in detail.
After the registration is finished, the IMS terminal can call the number of the PLMN network, the number of the PLMN network is the mobile number of the operator, after a user initiates the call, the address of the home location P-CSCF is obtained through the discovery of the P-CSCF, the address is routed to the primary entry point home location P-CSCF of the IMS network, then through the registration process, both the UE and the P-CSCF obtain the address of the S-CSCF, the home location P-CSCF sends a call request to the home location S-CSCF, and the call session control is finished at the home location S-CSCF.
When the IMS terminal calls the roaming PLMN user, the telephone traffic is mainly carried on the IMS network, so that the resource consumption of the PLMN circuit network is reduced, the call cost is reduced, and the call quality is more stable by utilizing the IMS network.
Fig. 2 is a flowchart of a terminal call method provided in the second embodiment of the present disclosure, which is applied to an HLR in a visited PLMN network, and as shown in fig. 2, the method includes:
step S201: receiving a query request sent by a calling number home location service call session control function (S-CSCF) entity according to a call request, wherein the call request is sent to the calling number home location S-CSCF entity by a terminal, and a called number in the call request is a number in a visited location Public Land Mobile Network (PLMN);
step S202: inquiring the current roaming position information of the called number in the call request according to the inquiry request;
step S203: and sending the current roaming position information of the called number to an S-CSCF entity of a calling number attribution so as to enable the S-CSCF entity of the calling number attribution to inquire out an S-CSCF entity in an IP multimedia subsystem technology IMS network of the called number roaming area according to the current roaming position information of the called number, and sending the call request to the S-CSCF entity in the IMS network of the called number roaming area so as to enable the S-CSCF entity in the IMS network of the called number roaming area to complete the call based on the call request.
The HLR in the visited PLMN network is responsible for the database managed by the mobile subscriber, permanently stores and records the subscription data of the subscribers in the managed area, and dynamically updates the location information of the subscribers so as to provide the network route of the called subscriber in the call service. Therefore, when the S-CSCF entity in the home IMS network sends out the query request, the actual position (roaming position) information of the user can be sent to the S-CSCF entity in the home IMS network, so that the S-CSCF entity in the home IMS network can query the S-CSCF entity in the roaming IMS network according to the position information, and the call request is sent to the S-CSCF entity in the roaming IMS network to complete the subsequent call.
Fig. 3 is a flowchart of a terminal call method provided in a third embodiment of the present disclosure, which is applied to an S-CSCF entity in an IMS network of a roaming destination of a called number, as shown in fig. 3, the method includes:
step S301: receiving a calling request sent by a calling number attribution S-CSCF entity, wherein a called number in the calling request is a number of a Public Land Mobile Network (PLMN) network of a visited place, and the calling number attribution S-CSCF entity queries the S-CSCF entity in the IMS network of the called number roaming place according to the current roaming position information of the called number; and the number of the first and second groups,
step S302: completing the call based on the call request.
The S-CSCF entity in the called roaming place IMS network receives the call request sent by the calling home location S-CSCF entity, and directly completes the roaming routing of the call in the IMS network, thereby reducing the resource consumption of the PLMN circuit network.
Further, the completing the call based on the call request includes:
after receiving the call request, sending the call request to a Media Gateway Control Function (MGCF) entity of a called number roaming place, so that the MGCF entity of the called number roaming place sends the call request to a mobile gateway office of the called number roaming place of a PLMN network of the called number roaming place, addresses the called number through the mobile gateway office of the called number roaming place, and completes the call based on the call request.
The S-CSCF of the roaming place sends a call request to the MGCF of the roaming place; MGCF at roaming place sends call request to mobile gateway office of PLMN network at roaming place; the roaming mobile gateway office addresses the called subscriber; when the called user answers the call, a media bearing channel is established from the home location P-CSCF to the home location MGCF, the home location MGC to the MGCF of the roaming location, the MGCF of the roaming location to the mobile gateway office of the roaming location, and the mobile gateway office of the roaming location to the MSC of the mobile number roaming.
Fig. 4 is a calling number home service call session control function S-CSCF entity provided in the fourth embodiment of the present disclosure, where the calling number home S-CSCF entity includes a first receiving module 11, a first sending module 12, and a first querying module 13;
the first receiving module 11 is configured to receive a call request of a terminal, where a called number in the call request is a number in a public land mobile network PLMN network of a visited place;
the first sending module 12 is configured to send a query request to a home location register HLR in a visited PLMN network according to the call request, so that the HLR queries the currently roaming location information of the called number according to the query request
The first receiving module 11 is further configured to receive the currently roaming location information of the called number returned by the HLR;
the first query module 13 is configured to query an S-CSCF entity in an IP multimedia subsystem technology IMS network of a roaming location of the called number according to the current roaming location information of the called number;
the first sending module 12 is further configured to send the call request to an S-CSCF entity in the IMS network of the called number roaming place, so that the S-CSCF entity in the IMS network of the called number roaming place completes the call based on the call request.
Further, the receiving module 11 is further configured to:
receiving a registration message sent by a terminal so that a calling number attribution S-CSCF entity responds to the registration message to complete the registration of the terminal; and the number of the first and second groups,
the method is also specifically set to receive a call request sent by a terminal through a calling number home location P-CSCF entity, wherein the call request is a request sent by the terminal through the calling number home location P-CSCF entity for calling a number in a visited PLMN network after the terminal completes registration at the calling number home location S-CSCF entity.
Fig. 5 is a home location register HLR in a visited public land mobile network PLMN network according to a fifth embodiment of the present disclosure, where the HLR in the visited PLMN network includes a second receiving module 21, a second querying module 22 and a second sending module 23;
the second receiving module 21 is configured to receive a query request sent by a calling number home service call session control function S-CSCF entity according to a call request, where the call request is sent to the calling number home S-CSCF entity by a terminal, and a called number in the call request is a number in a PLMN network in a visited place;
the second query module 22 is configured to query the current roaming location information of the called number in the call request according to the query request;
the second sending module 23 is configured to send the currently roaming location information of the called number to the S-CSCF entity at the home of the calling number, so that the S-CSCF entity at the home of the calling number queries the S-CSCF entity in the IMS network of the IP multimedia subsystem at the roaming location of the called number according to the currently roaming location information of the called number, and sends the call request to the S-CSCF entity in the IMS network at the roaming location of the called number, so that the S-CSCF entity in the IMS network at the roaming location of the called number completes a call based on the call request.
Fig. 6 is a serving call session control function S-CSCF entity in an IP multimedia subsystem technology IMS network of a called number roaming area according to a sixth embodiment of the present disclosure, where the S-CSCF entity in the IMS network of the called number roaming area includes a third receiving module 31 and a calling module 32;
the third receiving module 31 is configured to receive a call request sent by a calling number home S-CSCF entity, where a called number in the call request is a number of a public land mobile network PLMN network in a visited place, and the calling number home S-CSCF entity queries an S-CSCF entity in an IMS network in a called number roaming place according to current roaming location information of the called number;
the call module 32 is configured to complete a call based on the call request.
Further, the calling module 32 is specifically configured to;
after the third receiving module 31 receives the call request, the call request is sent to a media gateway control function MGCF entity of the called number roaming place, so that the MGCF entity of the called number roaming place sends the call request to a mobile gateway office of the called number roaming place of a PLMN network of the called number roaming place, and then addresses the called number through the mobile gateway office of the called number roaming place, and completes the call based on the call request.
Fig. 7 is a terminal call system according to a seventh embodiment of the present disclosure, where the system includes the calling number home S-CSCF entity 1 as described above, the HLR2 in the visited PLMN network as described above, and the S-CSCF entity 3 in the called number roaming area IMS network as described above.
The calling number home S-CSCF entity 1 in the embodiment of the present disclosure is used to implement the terminal calling method in the first method embodiment, the HLR2 in the visited PLMN network is used to implement the terminal calling method in the second method embodiment, and the S-CSCF entity 3 in the called number roaming IMS network is used to implement the terminal calling method in the third method embodiment, so the description is simple, and reference may be made to the related descriptions in the first, second, and third method embodiments, and details are not repeated here.
Furthermore, the embodiments of the present disclosure also provide a computer device, which includes a memory and a processor, where the memory stores a computer program, and when the processor runs the computer program stored in the memory, the processor executes the above-mentioned various possible methods.
In addition, the embodiments of the present disclosure also provide a computer-readable storage medium, in which computer-executable instructions are stored, and when at least one processor of the user equipment executes the computer-executable instructions, the user equipment executes the above-mentioned various possible methods.
Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC (Application Specific Integrated Circuit). Additionally, the ASIC may reside in user equipment. Of course, the processor and the storage medium may reside as discrete components in a communication device.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.
Claims (11)
1. A terminal calling method is applied to a calling number home location service call session control function (S-CSCF) entity, and is characterized by comprising the following steps:
receiving a call request of a terminal, wherein a called number in the call request is a number in a Public Land Mobile Network (PLMN) network of a visited place;
sending a query request to a Home Location Register (HLR) in a visited PLMN network according to the call request so that the HLR queries the current roaming location information of the called number according to the query request;
receiving the current roaming position information of the called number returned by the HLR;
inquiring an S-CSCF entity in an IP multimedia subsystem technology IMS network of a roaming place of the called number according to the current roaming position information of the called number;
and sending the call request to an S-CSCF entity in the IMS network of the called number roaming place so as to enable the S-CSCF entity in the IMS network of the called number roaming place to complete the call based on the call request.
2. The method of claim 1, wherein before the receiving the call request of the terminal, further comprising:
receiving a registration message sent by a terminal, and responding to the registration message to complete the registration of the terminal;
the receiving of the call request of the terminal includes:
receiving a call request sent by a terminal through a calling number home location proxy call session control function (P-CSCF) entity, wherein the call request is a request which is sent by the terminal through the calling number home location P-CSCF entity and is used for calling a number in a visited PLMN network after the terminal completes registration at the calling number home location S-CSCF entity.
3. A terminal call method applied to a home location register HLR in a visited public land mobile network PLMN network, comprising:
receiving an inquiry request sent by a calling number home location service call session control function (S-CSCF) entity according to a call request, wherein the call request is sent to the calling number home location S-CSCF entity by a terminal, and a called number in the call request is a number in a visited location PLMN network;
inquiring the current roaming position information of the called number in the call request according to the inquiry request;
and sending the current roaming position information of the called number to an S-CSCF entity of a calling number attribution so as to enable the S-CSCF entity of the calling number attribution to inquire out an S-CSCF entity in an IP multimedia subsystem technology IMS network of the called number roaming area according to the current roaming position information of the called number, and sending the call request to the S-CSCF entity in the IMS network of the called number roaming area so as to enable the S-CSCF entity in the IMS network of the called number roaming area to complete the call based on the call request.
4. A terminal calling method is applied to a service call session control function (S-CSCF) entity in an IP Multimedia Subsystem (IMS) network of a called number roaming place, and is characterized by comprising the following steps:
receiving a calling request sent by a calling number attribution S-CSCF entity, wherein a called number in the calling request is a number in a Public Land Mobile Network (PLMN) network of a visited place, and the calling number attribution S-CSCF entity queries the S-CSCF entity in the IMS network of the called number roaming place according to the current roaming position information of the called number; and the number of the first and second groups,
completing the call based on the call request.
5. The method of claim 4, wherein completing the call based on the call request comprises:
after receiving the call request, sending the call request to a Media Gateway Control Function (MGCF) entity of a called number roaming place, so that the MGCF entity of the called number roaming place sends the call request to a mobile gateway office of a called number roaming place of a PLMN network of the called number roaming place, addresses the called number through the mobile gateway office of the called number roaming place, and completes the call based on the call request.
6. A calling number attribution service call session control function (S-CSCF) entity is characterized by comprising a first receiving module, a first sending module and a first query module;
the first receiving module is set to receive a calling request of a terminal, and a called number in the calling request is a number in a Public Land Mobile Network (PLMN) network of a visited place;
the first sending module is set to send a query request to a Home Location Register (HLR) in a visited PLMN network according to the call request so that the HLR queries the current roaming location information of the called number according to the query request;
the first receiving module is also configured to receive the current roaming location information of the called number returned by the HLR;
the first query module is set to query an S-CSCF entity in an IP multimedia subsystem technology IMS network of a roaming place of the called number according to the current roaming position information of the called number;
the first sending module is further configured to send the call request to an S-CSCF entity in the IMS network of the called number roaming place, so that the S-CSCF entity in the IMS network of the called number roaming place completes the call based on the call request.
7. A home location register HLR in a visited public land mobile network PLMN network, wherein the HLR in the visited PLMN network comprises a second receiving module, a second querying module and a second sending module;
the second receiving module is configured to receive a query request sent by a calling number home location service call session control function (S-CSCF) entity according to a call request, wherein the call request is sent to the calling number home location S-CSCF entity by a terminal, and a called number in the call request is a number in a visited PLMN network;
the second query module is set to query the current roaming position information of the called number in the call request according to the query request;
the second sending module is configured to send the currently roaming location information of the called number to a calling number home S-CSCF entity, so that the calling number home S-CSCF entity queries an S-CSCF entity in an IP multimedia subsystem technology IMS network of the called number roaming location according to the currently roaming location information of the called number, and sends the call request to the S-CSCF entity in the IMS network of the called number roaming location, so that the S-CSCF entity in the IMS network of the called number roaming location completes a call based on the call request.
8. A service call session control function (S-CSCF) entity in an IP Multimedia Subsystem (IMS) network of a called number roaming place is characterized in that the S-CSCF entity in the IMS network of the called number roaming place comprises a third receiving module and a calling module;
the third receiving module is configured to receive a call request sent by a calling number home location S-CSCF entity, where a called number in the call request is a number of a Public Land Mobile Network (PLMN) network of a visited place, and the calling number home location S-CSCF entity queries an S-CSCF entity in an IMS network of the called number roaming place according to current roaming location information of the called number;
the call module is configured to complete a call based on the call request.
9. A terminal call system, comprising: a calling number home serving call session control function, S-CSCF, entity of claim 6, a home location register, HLR, in a visited public land mobile network, PLMN, network of claim 7, and a serving call session control function, S-CSCF, entity in a called number roaming IP multimedia subsystem technology, IMS, network of claim 8.
10. A computer device comprising a memory in which a computer program is stored and a processor, wherein when the processor executes the computer program stored in the memory, the processor performs the terminal call method according to any one of claims 1 to 5.
11. A computer-readable storage medium, comprising: computer program which, when run on a computer, causes the computer to perform a terminal call method according to any one of claims 1-5.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931901A (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Service implementation method and system of IP multimedia subsystem network |
| CN109661011A (en) * | 2017-10-11 | 2019-04-19 | 中国移动通信集团设计院有限公司 | A kind of IMS call route method, apparatus and system |
| CN111200809A (en) * | 2018-11-20 | 2020-05-26 | 中国电信股份有限公司 | Method, gateway and system for realizing VOLTE terminal international roaming service |
Family Cites Families (2)
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| JP6627876B2 (en) * | 2015-06-26 | 2020-01-08 | 日本電気株式会社 | Communication device, terminal, and communication method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931901A (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Service implementation method and system of IP multimedia subsystem network |
| CN109661011A (en) * | 2017-10-11 | 2019-04-19 | 中国移动通信集团设计院有限公司 | A kind of IMS call route method, apparatus and system |
| CN111200809A (en) * | 2018-11-20 | 2020-05-26 | 中国电信股份有限公司 | Method, gateway and system for realizing VOLTE terminal international roaming service |
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