CN106455060B - Calling method, device, terminal and core network system - Google Patents

Calling method, device, terminal and core network system Download PDF

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CN106455060B
CN106455060B CN201610841884.2A CN201610841884A CN106455060B CN 106455060 B CN106455060 B CN 106455060B CN 201610841884 A CN201610841884 A CN 201610841884A CN 106455060 B CN106455060 B CN 106455060B
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core network
network system
call request
user
subscriber
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CN106455060A (en
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陈宏�
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Hytera Communications Corp Ltd
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Hytera Communications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a calling method and a paging method. The calling method comprises the following steps: determining a target core network system in a plurality of core network systems to which a calling number of a call request belongs; if the first core network system is determined, initiating a call request to the first core network system; and if the second core network system is determined, initiating a call request to the second core network system. The paging method comprises the following steps: identifying a called number of the received call request; determining a target core network system in a plurality of core network systems to which a user number corresponding to a called number belongs; if the first core network system is determined, sending a paging message corresponding to the call request to a user terminal corresponding to the user number; and if the second core network system is determined, sending a call request to the second core network system so that the second core network system can send a paging message corresponding to the call request to the user terminal corresponding to the user number. In addition, the embodiment of the invention also discloses a calling device, a paging device, a terminal and a core network system.

Description

Calling method, device, terminal and core network system
Technical Field
The embodiment of the invention relates to the field of wireless communication, in particular to a calling method, a calling device, a terminal and a core network system.
Background
In the field of wireless communication, as a traditional User Equipment (UE), a dual-mode dual-card terminal can establish a call through core network systems of two different operators. The core network system of each operator provides a different user number for the dual-mode dual-card terminal, and the two different user numbers are used for identifying two different users provided by the two core network systems respectively. When the dual-mode dual-card terminal needs to call through a core network system of a certain operator, the dual-mode dual-card terminal uses the user number provided by the core network system. It can be seen that the same user terminal is actually configured with two different users, and the two users belong to different core network systems respectively. By using different users, the user terminal can make calls through two different core network systems.
The inventor has found through research that, in some cases, if different core network systems provide different subscriber numbers for the same subscriber terminal, and the same subscriber terminal needs to use different subscriber numbers to implement a call through different core network systems, a call in some specific modes cannot be implemented, and further, a call completing rate is low and a call setup time is long.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a calling method, device, terminal and core network system, so as to solve the technical problem in the prior art that the same user terminal needs to use different user numbers to establish a call through different core network systems, which results in that a call in some specific modes cannot be realized.
In a first aspect, an embodiment of the present invention provides a calling method, which is applied to a first user terminal, where the first user terminal corresponds to a first user number, and the method includes:
generating a first call request by taking the first user number as a calling number, and determining a core network system corresponding to the first call request in a plurality of core network systems to which the first user number belongs;
if the first call request corresponds to a first core network system, initiating the first call request to the first core network system so that the first core network system can identify a called number of the first call request, and triggering the first target core network system to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request;
if the first call request corresponds to a second core network system, the first call request is initiated to the second core network system, so that the second core network system can identify the called number of the first call request, and a second target core network system is triggered to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
In a second aspect, an embodiment of the present invention provides a calling method, which is applied to a first core network system, and the method includes:
receiving a first call request sent by a first user terminal, wherein a calling number of the first call request is a first user number corresponding to the first user terminal;
identifying a called number of the first call request;
in response to the called number of the first call request corresponding to a second subscriber number, determining a target core network system for paging the second subscriber number in a plurality of core network systems to which the second subscriber number belongs;
if the target core network system is the first core network system, sending a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number;
and if the target core network system is a second core network system, sending the first call request to the second core network system so that the second core network system can send a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
In a third aspect, an embodiment of the present invention provides a calling device, configured to a first user terminal, where the first user terminal corresponds to a first user number; the device comprises:
a generating unit, configured to generate a call request with the first user number as a calling number;
a first determining unit, configured to determine, in a plurality of core network systems to which the first subscriber number belongs, a core network system corresponding to the first call request;
a first paging unit, configured to initiate, if the first call request corresponds to a first core network system, the first call request to the first core network system, so that the first core network system identifies a called number of the first call request, and trigger the first target core network system to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request;
and the second call initiating unit is used for initiating the first call request to the second core network system if the first call request corresponds to the second core network system so that the second core network system can identify the called number of the first call request and trigger the second target core network system to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
In a fourth aspect, an embodiment of the present invention provides a calling device configured in a first core network system, where the calling device includes:
a first receiving unit, configured to receive a first call request sent by a first user terminal, where a calling number of the first call request is a first user number corresponding to the first user terminal;
a first identification unit, configured to identify a called number of the first call request;
a first determining unit, configured to determine, in response to that a called number of the first call request corresponds to a second subscriber number, a target core network system for paging the second subscriber number among a plurality of core network systems to which the second subscriber number belongs;
a first paging unit, configured to send a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number if the target core network system is the first core network system;
and the second paging unit is used for sending the first call request to the second core network system if the target core network system is the second core network system so that the second core network system can send a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
In a fifth aspect, an embodiment of the present invention provides a terminal, including a processor, a transmitter, a receiver, and a memory; the terminal is a first user terminal, and the first user terminal corresponds to a first user number;
the processor performs the following operations:
generating a call request by taking the first user number as a calling number, and determining a core network system corresponding to the first call request in a plurality of core network systems to which the first user number belongs;
if the first call request corresponds to a first core network system, initiating the first call request to the first core network system so that the first core network system can identify a called number of the first call request, and triggering the first target core network system to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request;
if the first call request corresponds to a second core network system, the first call request is initiated to the second core network system, so that the second core network system can identify the called number of the first call request, and the second target core network system is triggered to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
In a sixth aspect, an embodiment of the present invention provides a network system, including a processor, a transmitter, a receiver, and a memory; the network system is a first core network system;
the processor performs the following operations:
receiving a first call request sent by a first user terminal, wherein a calling number of the first call request is a first user number corresponding to the first user terminal;
identifying a called number of the first call request;
in response to the called number of the first call request corresponding to a second subscriber number, determining a target core network system for paging the second subscriber number in a plurality of core network systems to which the second subscriber number belongs;
if the target core network system is the first core network system, sending a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number;
and if the target core network system is a second core network system, sending the first call request to the second core network system so that the second core network system can send a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
Compared with the prior art, the embodiment of the invention has the following advantages:
by adopting the technical scheme of the embodiment of the invention, the user number corresponding to the user terminal can be the user number belonging to a plurality of core network systems including the first core network system and the second core network system. On one hand, for a call request with a calling number as the user number, the user terminal may initiate the call request to the first core network system, so that the target core network system to which the called number of the call request belongs is triggered by the first core network system to initiate a paging message to the user terminal corresponding to the called number of the call request, and the user terminal may also initiate the call request to the second core network system, so that the target core network system to which the called number of the call request belongs is triggered by the second core network system to initiate a paging message to the user terminal corresponding to the called number of the call request. On the other hand, for the call request with the paging number being the subscriber number, the first core network system may initiate a paging message corresponding to the call request to the subscriber terminal through itself, or may send the call request to the second core network system, so as to initiate a corresponding paging message to the subscriber terminal through the second core network system.
Therefore, when the user number corresponding to the user terminal is the user number belonging to a plurality of core network systems, the user terminal can initiate a call through a plurality of different core network systems by using the user number as the calling number, and the user terminal can also page through the plurality of different core network systems by using the user number as the called number. Furthermore, because the same user terminal can use the same user number in a plurality of different core network systems, the user terminal can select a better core network system to start calling, and can select a better core network system to page between the core network systems, thereby realizing calling in a specific mode, improving the call completing rate and shortening the call establishing time.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of an exemplary application scenario in an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a calling method according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a calling method according to an embodiment of the present invention;
fig. 4 is a schematic registration diagram of a PDT + LTE dual-mode terminal according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a marshalling in accordance with an embodiment of the present invention;
fig. 6 is a schematic diagram of a dual-mode terminal initiating a group call in an embodiment of the present invention;
fig. 7 is a schematic diagram of a dual-mode terminal initiating a single call in an embodiment of the present invention;
fig. 8 is a schematic diagram of a preferred network paging dual mode terminal in an embodiment of the present invention;
fig. 9 is a schematic diagram of another preferred network paging dual mode terminal in the embodiment of the present invention;
fig. 10 is a schematic diagram of another preferred manner of paging a dual mode terminal by the network in accordance with the embodiment of the present invention;
fig. 11 is a schematic diagram of another preferred manner of paging a dual mode terminal by the network in the embodiment of the present invention;
FIG. 12 is a diagram illustrating another preferred manner of paging a dual mode terminal by the network in accordance with an embodiment of the present invention;
FIG. 13 is a diagram illustrating a structure of a calling device according to an embodiment of the present invention;
FIG. 14 is a diagram illustrating a calling device according to an embodiment of the present invention;
fig. 15 is a schematic diagram of a hardware structure of a terminal according to an embodiment of the present invention;
fig. 16 is a schematic hardware structure diagram of a network system according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The inventor finds that in some application scenarios, a plurality of different core network systems can provide the same user number for the same user terminal. For example, under a network architecture of a possible private trunking communication network, the same private trunking communication network provides a broadband trunking communication system and a narrowband trunking communication system, the broadband trunking communication system may employ a first core network system, the narrowband trunking communication system may employ a second core network system, and the first core network system and the second core network system are different core network systems. Because the first core network system and the second core network system are the same trunking dedicated communication network, the same trunking dedicated communication network can provide the same user number for the same user terminal. However, the conventional user terminal and core network system cannot realize that the same user terminal uses the same user number to make a call through a plurality of core network systems.
In order to enable the same user terminal to use the same user number to make a call through a plurality of core network systems, in the embodiment of the present invention, the user number corresponding to the user terminal may be a user number belonging to a plurality of core network systems. On one hand, for the call request with the calling number as the user number, the user terminal can select a core network system for originating a call from a plurality of core network systems to which the user number belongs and initiate the call request to the selected core network system, so that the user terminal can initiate the call request with the calling number as the user number to different core network systems. On the other hand, for a call request with the called number as the subscriber number, the core network system receiving the call request may select a core network system for paging from a plurality of core network systems to which the subscriber number belongs and trigger the selected core network system to initiate paging to the subscriber terminal, so that the subscriber terminal may receive a paging message with the subscriber number as the called number from different core network systems. Therefore, the same subscriber terminal can use the same subscriber number to realize calling through a plurality of different core network systems. Furthermore, because the same user terminal can use the same user number in a plurality of different core network systems, the user terminal can select a better core network system to start calling, and can select a better core network system to page between the core network systems, thereby realizing calling in a specific mode, improving the call completing rate and shortening the call establishing time.
For example, one of the application scenarios of the embodiment of the present invention may be applied to the network system shown in fig. 1. In the network system, a narrowband + broadband cluster dual-mode terminal 101 corresponds to a first user number, a broadband cluster terminal 102 corresponds to a second user number, and a narrowband cluster terminal 103 corresponds to a third user number. The broadband cluster core network 104 and the narrowband cluster core network 105 belong to the same cluster communication private network, and the broadband cluster core network 104 and the narrowband cluster core network 105 are connected through a broadband and narrowband gateway 106. The first subscriber number belongs to the core network 104 and the core network 105, the second subscriber number belongs to the core network 104 only, and the third subscriber number belongs to the core network 105 only. The broadband Trunking system may be, for example, a Long Term Evolution (LTE) Trunking system, and the narrowband Trunking system may be, for example, a Police Digital Trunking (PDT) system or a Terrestrial Trunked Radio (Terrestrial Trunked Radio) digital Trunking communication system.
In an example of a call process, the terminal 101 may generate a first call request with a first subscriber number as a calling number, determine a core network corresponding to the first call request in the core network 104 and the core network 105, initiate the first call request to the core network 104 if the first call request corresponds to the core network 104, and initiate the first call request to the core network 105 if the first call request corresponds to the core network 105. The core network 104, upon receiving the first call request, identifies a called number of the first call request, sends a paging message corresponding to the first call request to the terminal 102 if the called number of the first call request corresponds to the second subscriber number, and sends the first call request to the core network 105 if the called number of the first call request corresponds to the third subscriber number. The core network 105, upon receiving the first call request, identifies a called number of the first call request, sends the first call request to the core network 104 if the called number of the first call request corresponds to the second subscriber number, and sends a paging message corresponding to the first call request to the terminal 103 if the called number of the first call request corresponds to the third subscriber number.
In another example of a call procedure, the terminal 102 may generate a second call request with a called number corresponding to the first subscriber number and initiate the second call request to the core network 104. The core network 104 identifies the called number of the second call request when receiving the second call request, thereby identifying that the called number of the second call request corresponds to the first subscriber number. The core network 104 determines a target core network for paging the first subscriber number from the core network 104 and the core network 105, and sends a paging message corresponding to the second call request to the terminal 101 if the target core network is the core network 104, and sends the second call request to the core network 105 if the target core network is the core network 105. The core network 105 identifies the called number of the second call request when receiving the second call request, thereby identifying that the called number of the second call request corresponds to the first subscriber number. The core network 105 transmits a paging message corresponding to the second call request to the terminal 101.
In yet another example of a call procedure, the terminal 103 may generate a third call request with a called number corresponding to the first subscriber number and initiate the third call request to the core network 105. The core network 105 identifies the called number of the third call request when receiving the third call request, thereby identifying that the called number of the third call request corresponds to the first subscriber number. The core network 105 determines a target core network for paging the first subscriber number from the core network 104 and the core network 105, and sends a paging message corresponding to the third call request to the terminal 101 if the target core network is the core network 105, and sends the third call request to the core network 104 if the target core network is the core network 104. The core network 104 identifies the called number of the third call request when receiving the third call request, thereby identifying that the called number of the third call request corresponds to the first subscriber number. The core network 104 transmits a paging message corresponding to the third call request to the terminal 101.
It should be noted that the foregoing application scenarios are only shown for facilitating understanding of the principles of the present invention, and are not intended to limit the technical solutions provided by the embodiments of the present invention.
The following describes in detail the implementation of the calling method, the device, the terminal and the core network system according to the embodiments with reference to the drawings.
Referring to fig. 2, a flowchart of a calling method in an embodiment of the present invention is shown. The method of the embodiment can be applied to a first user terminal, and the first user terminal corresponds to a first user number. The method may specifically comprise the following steps, for example:
s201, generating a first call request by taking the first user number as a calling number.
Specifically, the user of the first user terminal may operate on the first user terminal to input the call object, thereby triggering the first user terminal to generate the first call request for the selected call object with the first user number as the calling number. The call target of the first call request may be a subscriber number, that is, the first call request is a single call request. Or, the call object of the first call request may also be a group, that is, the first call request is a group call request for the group, the called number of the first call request is a group number corresponding to the group, and the paging message corresponding to the first call request is a number of a user other than the first user number in group member numbers used for paging the group. It is understood that the group member numbers of the group may include subscriber numbers belonging to a plurality of core network systems and subscriber numbers belonging to only one core network system.
In this embodiment, the first user terminal may provide a plurality of input modes of the call object.
In some embodiments, the first user terminal may be preset with a calling number list, and the user may select a calling object in the calling number list provided by the first user terminal. Each call object in the call number list may have an attribute for identifying a home system, and the attribute of the call object is used for marking a core network system to which the call object belongs. If the calling object is a subscriber number, the attribute of the subscriber number in the calling number list is used for marking the core network system to which the subscriber number belongs. If the call object is a group, the attributes of the group in the call number list are used to mark the home processing system of the group.
In other embodiments, the first user terminal may provide a manual input interface preset with a call number, and the user may manually input the number of the call object on the manual input interface provided by the first user terminal. If the call object is a subscriber number, the manual input interface inputs the subscriber number. If the call object is a group, the number of the group is input in the manual input interface, wherein the network feature code and the call object can be included in the information input on the manual input interface. The network feature code represents a core network system to which the call object belongs.
S202, determining a core network system corresponding to the first call request in a plurality of core network systems to which the first user number belongs.
It is understood that the first subscriber number is a subscriber number belonging to a plurality of core network systems, that is, the first subscriber number is a subscriber number used by an opening subscriber of the plurality of core network systems. Each core network system to which the first subscriber number belongs records account opening information of the first subscriber number in the core network system, and the account opening information may include the first subscriber number and an attribution type. The attribution type is used for identifying whether the first subscriber number belongs to a subscriber number of only one core network system or a subscriber number of a plurality of core network systems.
It should be noted that, when a subscriber number belongs to an enabled subscriber in a core network system and a subscriber terminal uses the subscriber number to access the core network system, the subscriber terminal needs to initiate registration with the core network system, so that the core network system marks the registration state of the subscriber number as a registered state, and thus the core network system can determine that the subscriber number is in a communicable state through the registered state of the subscriber number. For the first subscriber number belonging to a plurality of core network systems, one core network system can record not only the registration state of the first subscriber number in the core network system, but also the registration state of the first subscriber number in other core network systems. Specifically, this embodiment may further include: a first user terminal sends a registration signaling of a first user number to a first core network system to which the first user number belongs, so that the first core network system sets a first registration state of the first user number to a registered state, and sends the first registration state of the first user number to a second core network system, wherein the first registration state of the first user number is used for indicating whether the first user number is registered in the first core network system; a first user terminal sends a registration signaling of a first user number to a second core network system to which the first user number belongs, so that the second core network system sets a second registration state of the first user number to a registered state, and sends the second registration state of the first user number to the first core network system, wherein the second registration state of the first user number is used for indicating whether the first user number is registered in the second core network system; the first registration state of the first user number is a registered state, which indicates that the first user number and the first core network system are in a communicable state; the second registration state of the first user number is a registered state, which indicates that the first user number and the second core network system are in a communicable state.
It is understood that for a subscriber number and a core network system, the registration state of the subscriber number in the core network system may be the registered state only if the subscriber number belongs to the core network system. Therefore, if the registration state of the subscriber number in the core network system is a registered state, the subscriber number belongs to the core network system and the subscriber number and the core network system are in a communicable state.
In some embodiments of this embodiment, the first call request may be a single call request, that is, a call object of the first call request includes only one subscriber number. Assuming that the called number of the first call request as the single call request is the second subscriber number, at this time, the first subscriber terminal may select the core network system for initiating the single call request according to the core network system to which the second subscriber number belongs. Specifically, S202 may include, for example: determining a core network system to which the second user number belongs in a plurality of core network systems to which the first user number belongs; if the second user number only belongs to a first core network system, determining that the first call request corresponds to the first core network system; if the second user number only belongs to a second core network system, determining that the first call request corresponds to the second core network system; if the second user number belongs to a plurality of core network systems, selecting the core network system with the best wireless access signal from the plurality of core network systems to which the second user number belongs as the core network system corresponding to the call request, wherein the core network system with the best wireless access signal is the first core network system or the second core network system. Therefore, when the called number of the single call request belongs to only one core network system, the first user terminal can initiate the single call request through the core network system to which the called number of the single call request belongs, so that the call between the first user number and the called number can be realized through only one core network system without crossing the core network systems, the call completing rate is improved, and the call establishing time is shortened. When the called number of the single call request belongs to a plurality of core network systems, the first user terminal can select the core network system with the best signal to initiate the single call request, so that the call between the first user terminal and the called number can be realized through the core network system with the best signal, the call completing rate is improved, and the call establishing time is shortened.
In other embodiments of this embodiment, the first call request may be a group call request for a group, that is, a call target of the first call request is a group, a called number of the first call request is a group number corresponding to the group, and a paging message corresponding to the first call request is used for other user numbers except for the first user number in group member numbers of the group. . For example, assuming that the group member number of the group includes the first subscriber number and the second subscriber number, the paging message corresponding to the first call request may be used to page the second subscriber number. In the case that the first call request is a group call request, the first user terminal may use a home processing system of a group corresponding to the group call request as a core network system initiating the group call request. Specifically, S202 may include, for example: determining an attribution processing system of the group in a plurality of core network systems to which the first user number belongs; wherein the group's home processing system is the only one core network system; if the group of home processing systems is a first core network system, determining that the request corresponds to the first core network system; and if the group of home processing systems is a second core network system, determining that the first call request corresponds to the second core network system.
It will be appreciated that although the individual group member numbers in the group may be attributed to a number of different core network systems, only one of the core network systems may be the home processing system of the group. Specifically, when a call group is established, the group needs to open an account in a core network system, and the core network system for opening the account in the group is the home processing system of the group. The visited office number of each group member number in the group can be recorded in the belonging processing system of the group, and the visited office number of the group member number is used for identifying the core network system currently visited by the group member number. For a group member number in the group, the group member number may be a subscriber number belonging to the home processing system of the group, or may be a subscriber number not belonging to the home processing system of the group.
It should be noted that the execution order of both S201 and S202 in this embodiment may not be limited. For example, the present embodiment may first perform S201 to generate the first call request, and then perform S202 to determine the core network system for initiating the first call request. For another example, in this embodiment, S202 may be performed to determine a core network system for initiating the first call request, and then S201 is performed to generate the first call request. For another example, in this embodiment, S201 and S202 may be executed simultaneously, and the first user terminal executes S202 to determine a system for initiating the first call request in the process of executing S201 to generate the first call request.
S203, if the first call request corresponds to a first core network system, initiating the first call request to the first core network system so that the first core network system can identify the called number of the first call request, and triggering a first target core network system to which the called number of the first call request belongs to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request.
Specifically, when receiving the first call request, the first core network system may identify a subscriber number corresponding to a called number of the first call request. Assuming that the called number of the first call request corresponds to the fourth subscriber number and the fourth subscriber number corresponds to the second subscriber terminal, the first core network system may select a first target core network system for paging the fourth subscriber number among the core network systems to which the fourth subscriber number belongs, according to a registration state of the fourth subscriber number held by the first core network system. If the first registration state of the fourth subscriber number is a registered state and the second registration state of the fourth subscriber number is an unregistered state, the first core network system may select the first core network system as a first target core network system and trigger itself to send the first paging message to the second subscriber terminal. If the first registration state of the fourth subscriber number is an unregistered state and the second registration state of the fourth subscriber number is a registered state, the first core network system may select the second core network system as a first target core network system, and send a first call request to the second core network system to trigger the second core network system to send a first paging message to the second subscriber terminal. If the first registration state and the second registration state of the fourth subscriber number are both registered states, the first core network system may select the first target core network system from the first core network system and the second core network system according to a preset policy.
In addition, in the case that the first call request is a single call request, the called number of the first call request corresponds to the fourth subscriber number, which means that the fourth subscriber number is the called number of the first call request. And in the case that the first call request is a group call request, the called number of the first call request corresponds to a fourth user number, which means that the fourth user number is a group member number of a group corresponding to the called number of the first call request.
It can be understood that, in a case that the first call request is a group call request for a group, when the first core network system receives the first call request, for each group member number in the group except for the first user number, the first core network system may trigger a paging message corresponding to the first call request to be sent to a user terminal corresponding to the each group member number.
S204, if the first call request corresponds to a second core network system, initiating the first call request to the second core network system so that the second core network system can identify the called number of the first call request, and triggering a second target core network system to which the called number of the first call request belongs to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
Specifically, when receiving the first call request, the second core network system may identify a subscriber number corresponding to the called number of the first call request. Assuming that the called number of the first call request corresponds to the fifth subscriber number and the fifth subscriber number corresponds to the third subscriber terminal, the second core network system may select a second target core network system for paging the fifth subscriber number among the core network systems to which the fifth subscriber number belongs, according to a registration state of the fifth subscriber number stored in the second core network system. If the first registration state of the fifth user number is an unregistered state and the second registration state of the fifth user number is a registered state, the second core network system may select the second core network system as a second target core network system, and trigger itself to send a second paging message to the third user terminal. If the first registration state of the fifth subscriber number is a registered state and the second registration state of the fifth subscriber number is an unregistered state, the second core network system may select the first core network system as a second target core network system, and send the first call request to the first core network system to trigger the first core network system to send the second paging message to the third subscriber terminal. If the first registration state and the second registration state of the fifth subscriber number are both registered states, the second core network system may select a second target core network system from the first core network system and the second core network system according to a preset policy.
It should be noted that, in the case that the first call request is a single call request, the called number of the first call request corresponds to the fifth subscriber number, which means that the fifth subscriber number is the called number of the first call request. And in the case that the first call request is a group call request, the called number of the first call request corresponds to a fifth user number, which means that the fifth user number is a group member number of a group corresponding to the called number of the first call request.
It may be understood that, in a case that the first call request is a group call request for a group, when the second core network system receives the first call request, for each group member number in the group except for the first user number, the second core network system may trigger a paging message corresponding to the first call request to be sent to each group member number.
In this embodiment, the first user terminal may not only start a call to a plurality of different core network systems with the first user number as a calling number, but also receive a page from the plurality of different core network systems with the first user number as a called number. Specifically, the present embodiment may further include: receiving a third paging message sent by the first core network system, wherein the third paging message corresponds to a second call request, and a called number of the second call request corresponds to the first user number; and receiving a fourth paging message sent by the second core network system, wherein the fourth paging message corresponds to a third call request, and a called number of the third call request corresponds to the first user number. It is to be understood that, in the case where the second call request is a single call request, the called number of the second call request corresponds to the first subscriber number, which means that the first subscriber number is the called number of the second call request. And in the case that the second call request is a group call request, the called number of the second call request corresponds to the first user number, which means that the first user number is a group member number of a group corresponding to the called number of the second call request. In addition, in the case that the third call request is a single call request, the called number of the third call request corresponds to the first subscriber number, which means that the first subscriber number is the called number of the third call request. And in the case that the third call request is a group call request, the called number of the third call request corresponds to the first user number, which means that the first user number is a group member number of a group corresponding to the called number of the third call request.
In some embodiments, for a call request with a first subscriber number as a called number, only one selected core network system from a plurality of core network systems to which the first subscriber number belongs may be sent to the first subscriber terminal, that is, for the same call request, the first subscriber terminal may receive a paging message corresponding to the call request only once.
In other embodiments, for a call request with a first subscriber number as a called number, multiple core network systems to which the first subscriber number belongs may respectively send a first subscriber terminal, that is, for the same call request, the first subscriber terminal may receive paging requests corresponding to the call request multiple times. The first user terminal may select a paging message from the first user terminal to be reserved and discard other paging messages, such that the first user terminal selects a core network system to conduct the call. Specifically, the present embodiment may further include: and the first user terminal determines the paging message received firstly in all the received paging messages corresponding to the second call request, and discards the other paging messages corresponding to the second call request except the paging message received firstly. Wherein the second call request and the third call request are the same call request. The second call request is transmitted to the first core network system by a third user terminal and transmitted to the second core network system by the first core network system, or the second call request is transmitted to the second core network system by a third user terminal and transmitted to the first core network system by the second core network system.
It should be noted that this embodiment may be applied to any scenario in which a plurality of different core network systems provide the same universal subscriber number for the same subscriber terminal. For example, the first core network system may be a broadband trunking communication system, the second core network system may be a narrowband trunking communication system, and the first core network system and the second core network system belong to the same trunking communication private network. At this time, the first user terminal may be a narrowband + broadband clustered dual-mode terminal, the second user terminal may be a broadband clustered terminal or a narrowband + broadband clustered dual-mode terminal, and the third user terminal may be a narrowband clustered terminal or a narrowband + broadband clustered dual-mode terminal. The attributes of the call object in the call number list can be used for marking the terminal system of the call object. The aforementioned network feature code can also be used to identify the terminal mode of the call object. The aforementioned attribution type may be used to identify a pattern of the first subscriber number.
Through the technical scheme of the embodiment, the subscriber number corresponding to the subscriber terminal can be a subscriber number belonging to a plurality of core network systems. On one hand, for the call request with the calling number as the user number, the user terminal can select a core network system for originating a call from a plurality of core network systems to which the user number belongs and initiate the call request to the selected core network system, so that the user terminal can initiate the call request with the calling number as the user number to different core network systems. On the other hand, for a call request with the called number as the subscriber number, the core network system receiving the call request may select a core network system for paging from a plurality of core network systems to which the subscriber number belongs and trigger the selected core network system to initiate paging to the subscriber terminal, so that the subscriber terminal may receive a paging message with the subscriber number as the called number from different core network systems. Therefore, the same subscriber terminal can use the same subscriber number to realize calling through a plurality of different core network systems. Furthermore, because the same user terminal can use the same user number in a plurality of different core network systems, the user terminal can select a better core network system to start calling, and can select a better core network system to page between the core network systems, thereby realizing calling in a specific mode, improving the call completing rate and shortening the call establishing time.
Referring to fig. 3, a flowchart of a calling method in an embodiment of the present invention is shown. The method of this embodiment may be applied to the first core network system, and the method may specifically include the following steps:
s301, receiving a first call request sent by a first user terminal, wherein a calling number of the first call request is a first user number corresponding to the first user terminal.
As the calling number of the first call request, the first subscriber number may be a subscriber number belonging only to the first core network system, or the first subscriber number may be a subscriber number belonging to a plurality of core network systems including the first core network system. It can be understood that, when the first subscriber number belongs to multiple core network systems, the first subscriber terminal may determine a core network system corresponding to the first call request in the multiple core network systems to which the first subscriber number belongs, and if the first call request corresponds to the first core network system, the first subscriber terminal may send the first call request to the first core network system, thereby proceeding to the execution of S301. In addition, if the first call request corresponds to the second core network system, the first user terminal may send the first call request to the second core network system. It can be seen that, when the first subscriber number belongs to a plurality of core network systems, the first call request with the first subscriber number as the calling number may be initiated through a plurality of different core network systems.
S302, identifying the called number of the first call request.
In this embodiment, the call target of the first call request may be a subscriber number, that is, the first call request is a single call request, and the called number is a second subscriber number. Alternatively, the call target of the first call request may also be a group, that is, the first call request is a group call request for a group, the called number of the first call request is a group number corresponding to the group, and the paging message corresponding to the first call request is a number of a user other than the first user number in group members for paging the group, for example, the group members of the group may include the first user number and the second user number. The home processing system of the group is the first core network system, and the home processing system of the group is the only one core network system. It is to be understood that the group member numbers of the group may include subscriber numbers belonging to a plurality of core network systems and subscriber numbers belonging to only one core network system.
It may be understood that, in a case that the first call request is a group call request for a group, when the first core network system receives the first call request, for each group member number in the group except for the first user number, the first core network system may trigger a paging message corresponding to the first call request to be sent to each group member number.
And S303, responding to the called number of the first call request corresponding to a second user number, and determining a target core network system for paging the second user number in a plurality of core network systems to which the second user number belongs.
In this embodiment, in the case that the first call request is a single call request, the called number of the first call request corresponds to the second subscriber number, which means that the second subscriber number is the called number of the first call request. And in the case that the first call request is a group call request, the called number of the first call request corresponds to the second user number, which means that the second user number is a group member number of a group corresponding to the called number of the first call request.
It is understood that the second subscriber number is a subscriber number belonging to a plurality of core network systems, that is, the second subscriber number is a subscriber identification code commonly used in the plurality of core network systems, and the second subscriber number is a subscriber number used by an open subscriber of the plurality of core network systems. And recording account opening information of the second user number in the core network system in each core network system to which the second user number belongs, wherein the account opening information can comprise the second user number and an attribution type. The attribution type is used to identify whether the second subscriber number belongs to a subscriber number of only one core network system or a subscriber number belonging to a plurality of core network systems.
It should be noted that, when a subscriber number belongs to an enabled subscriber in a core network system and a subscriber terminal uses the subscriber number to access the core network system, the subscriber terminal needs to initiate registration with the core network system, so that the core network system marks the registration state of the subscriber number as a registered state, and thus the core network system can determine that the subscriber number is in a communicable state through the registered state of the subscriber number. It can be seen that, for a subscriber number and a core network system, the registration state of the subscriber number in the core network system may be the registered state only if the subscriber number belongs to the core network system. If the registration state of the user number in the core network system is a registered state, the user number belongs to the core network system and the user number and the core network system are in a communicable state. Therefore, the first core network system can determine the core network system to which the second subscriber number belongs and the core network system in which the second subscriber number is in a communicable state based on the registration state of the second subscriber number in itself and the registration state in the second core network system, and thus can determine the target core network system for paging the second subscriber number. Specifically, in this embodiment, for example, a first registration status and a second registration status of the second subscriber number may be recorded in the first core network system, where S303 may include: determining a core network system which can communicate the current second user number according to the first registration state and the second registration state; and determining the target core network system for paging the second user number in the core network system in which the current second user number can be communicated. If the first registration state is a registered state, the current core network system with the second user number capable of communicating comprises the first core network system, and if the second registration state is a registered state, the current core network system with the second user number capable of communicating comprises the second core network system.
It can be understood that, if a plurality of core network systems in which the current second user number can communicate are determined according to the registration state of the second user number, the first core network system may select a core network system for paging the second user number from the plurality of core network systems in which the current second user can communicate according to a preset policy. For example, one strategy is that the first core network system may select only the first core network system itself as the target core network system for paging the second subscriber number in a plurality of core network systems in which the current second subscriber number can communicate, so that the first call request is not processed by other core network systems, thereby saving network resources. For another example, another strategy is that the first core network system may select both the first core network system and the second core network system as target core network systems for paging the second subscriber number in a plurality of core network systems in which the current second subscriber number may communicate, so that the call completing rate may be improved in a case where network resources are relatively loose. As another example, there is a policy that the first core network system may select a designated core network system among a plurality of core network systems in which the current second subscriber number can communicate, as the target core network, for example, the designated core network system may be the second core network system.
In addition, when determining a target core network system according to the registration state of the second subscriber number, for the second subscriber numbers belonging to a plurality of core network systems, the first core network system may record not only the registration state of the first subscriber number in itself but also the registration state of the first subscriber number in other core network systems. Specifically, the present embodiment may further include: receiving a registration signaling of the second user number sent by the second user terminal, setting a first registration state of the second user number as a registered state, and sending the first registration state of the second user number to the second core network system; and receiving a second registration state of the second user number sent by the second core network system, wherein the second registration state of the second user number is set to be a registered state by the second core network system after receiving a registration signaling of the second user number sent by the second user terminal and sent to the first core network system. Wherein the first registration state of the second subscriber number is used to indicate whether the second subscriber number is registered to the first core network system. The second registration state of the second user number is used for indicating whether the second user number is registered to the second core network system; the first registration state of the second user number is a registered state, which represents that the second user number and the first core network system are in a communicable state; the second registration state of the second user number is a registered state, which indicates that the second user number and the second core network system are in a communicable state.
S304, if the target core network system is the first core network system, sending a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
S305, if the target core network system is a second core network system, the first call request is sent to the second core network system, so that the second core network system sends a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
Further, the target core network system may include a plurality of core network systems. In this regard, the present embodiment may further include: if the target core network system comprises the first core network system and the second core network system, the first paging message is sent to the second user terminal, and the first call request is sent to the second core network system, so that the second core network system can send the second paging message to the second user terminal. Wherein the first paging message and the second paging message are used by the second user terminal to determine the first received paging message among all received paging messages corresponding to the first call request and to discard other paging messages corresponding to the second call request except the first received paging message.
It is understood that the first core network system may trigger the transmission of the paging message for the called subscriber number belonging to only one core network system, in addition to the transmission of the paging message for the called subscriber number belonging to a plurality of core network systems. Specifically, the present embodiment may further include: receiving a second call request sent by a third user terminal, wherein the calling number of the second call request is a third user number corresponding to the third user terminal; identifying a called number of the second call request, the called number of the second call request corresponding to a fourth subscriber number, the fourth subscriber number belonging to only one core network system; if the core network system to which the fourth user number belongs is the first core network system, sending a third paging message corresponding to the second call request to a fourth user terminal corresponding to the fourth user number; and if the core network system to which the fourth user number belongs is a second core network system, sending the second call request to the second core network system so that the second core network system can send a fourth paging message corresponding to the second call request to a fourth user terminal corresponding to the fourth user number.
It is understood that the first core network system may select a core network system for paging the fourth subscriber number according to a registration status of the fourth subscriber number. Specifically, the paging manner of the first core network system for the fourth subscriber number according to the registration state of the fourth subscriber number is similar to the paging manner of the first core network system for the second subscriber number according to the registration state of the second subscriber number. Therefore, the paging method of the first core network system for the fourth user number can be referred to the aforementioned paging method of the first core network system for the second user number.
In addition, in this embodiment, the first call request and the second call request may be the same group call request for the same group. At this time, as the calling number of the group call request, the first user number and the third user number are the same user number. The group member numbers of the group actually include at least a first user number, a second user number, and a fourth user number. As the group member number of the group, the second subscriber number is a subscriber number belonging to a plurality of core network systems, and the fourth subscriber number is a subscriber number belonging to only one core network system.
It should be noted that this embodiment may be applied to any scenario in which a plurality of different core network systems provide the same universal subscriber number for the same subscriber terminal. For example, the first core network system may be a broadband trunking communication system, the second core network system may be a narrowband trunking communication system, and the first core network system and the second core network system belong to the same trunking communication private network. At this time, the second user terminal may be a narrowband + wideband trunked dual-mode terminal, the first user terminal may be a wideband trunked terminal, a narrowband trunked terminal, or a narrowband + wideband trunked dual-mode terminal, the third user terminal may be a wideband trunked terminal, a narrowband trunked terminal, or a narrowband + wideband trunked dual-mode terminal, and the fourth user terminal may be a wideband trunked terminal or a narrowband trunked terminal. The attributes of the call object in the call number list can be used for marking the terminal system of the call object. The aforementioned home type may be a Dual mode type (Dual) of a terminal system for identifying the first subscriber number. For another example, the first core network system may also be a narrowband trunking communication system, and the second core network system may also be a broadband trunking communication system, where the first core network system and the second core network system belong to the same private trunking communication network.
It is understood that the "second user number" in this embodiment may correspond to the "first user number" in the foregoing embodiment shown in fig. 2, and the specific implementation of this embodiment and the specific implementation of the embodiment shown in fig. 2 may be referred to each other.
Through the technical scheme of the embodiment, the subscriber number corresponding to the subscriber terminal can be a subscriber number belonging to a plurality of core network systems. On one hand, for the call request with the calling number as the user number, the user terminal can select a core network system for originating a call from a plurality of core network systems to which the user number belongs and initiate the call request to the selected core network system, so that the user terminal can initiate the call request with the calling number as the user number to different core network systems. On the other hand, for a call request with the called number as the subscriber number, the core network system receiving the call request may select a core network system for paging from a plurality of core network systems to which the subscriber number belongs and trigger the selected core network system to initiate paging to the subscriber terminal, so that the subscriber terminal may receive a paging message with the subscriber number as the called number from different core network systems. Therefore, the same subscriber terminal can use the same subscriber number to realize calling through a plurality of different core network systems. Furthermore, because the same user terminal can use the same user number in a plurality of different core network systems, the user terminal can select a better core network system to start calling, and can select a better core network system to page between the core network systems, thereby realizing calling in a specific mode, improving the call completing rate and shortening the call establishing time.
In order to make the technical solutions of the embodiments of the present invention more clearly understood by those skilled in the art, the following description is provided by a specific application scenario. In the application scenario, the first core network system is an LTE cluster system, the second core network system is a PDT cluster system, and the first core network system and the second core network system can communicate through a PDT gateway. The PDT + LTE dual-mode terminal can be communicated with an LTE cluster core network through an eNB base station and can also be communicated with the PDT core network through a PDT base station. The PDT terminal can only communicate with the PDT core network through the PDT base station. The LTE terminal can only communicate with the LTE cluster core network through the eNB base station.
Referring to fig. 4, a registration diagram of a PDT + LTE dual-mode terminal in an embodiment of the present invention is shown. The user number "75580201" used by the Dual-mode terminal can simultaneously open users in the LTE trunking system and the PDT system, and the account opening information thereof may include the user number "75580201" and a Dual-mode type (Dual). After the dual-mode terminal is powered on by using the user number '75580201', a cluster registration signaling can be sent to the LTE cluster core network and the PDT core network at the same time, and a database (such as an eHSS) of the LTE cluster core network records the registration state of the user number '75580201' used by the dual-mode terminal in the system and the registration state of the user number in the PDT system of the other side. The PDT core network records the registration state of a user number '75580201' used by the dual-mode terminal in the system and the registration state of the user number in the opposite LTE cluster system.
Referring to fig. 5, a schematic diagram of call group establishment according to an embodiment of the present invention is shown. The call group with the number "75580900" is only registered in the LTE trunking system, that is, the call group "75580900" only belongs to the LTE trunking system, and its home processing system is an LTE core network. The call group may be formed by a mix of any number and any type of terminals. In the example of fig. 5, call group "75580900" includes 3 subscriber numbers: a subscriber number "75580202" used by an LTE terminal, a subscriber number "75520210" used by a PDT terminal, and a subscriber number "75580201" used by a Dual mode (Dual) terminal. The LTE cluster core network records the registration state and the number of the visiting office of the user number '75580201' used by the dual-mode terminal under the system and the PDT system. Since the calling group '75580900' includes a subscriber number used by the PDT terminal and a subscriber number used by the dual mode terminal, the account opening information of the calling group '75580900' is synchronized to the PDT core network. The user number '75580201' used by the dual-mode terminal initiates a call to the calling group, and the LTE core network determines that the user number '75580202' of the calling group which is registered exists in the LTE cluster system and the user number '75520210' of the calling group which is registered exists in the PDT system according to the registration state of each user number in the calling group, so that in addition to initiating a page to the user number '75580202' in the core network of the system, the PDT core network also needs to initiate a call to the PDT core network so as to initiate a page to the user number '75520210'.
Referring to fig. 6, a schematic diagram of a dual-mode terminal initiating a group call in an embodiment of the present invention is shown. To implement the dual mode terminal preferred network origination, the dual mode terminal using the subscriber number "75580201" adds an attribute for configuring the calling group to belong to the LTE trunking system or the PDT system to the number of the calling group in the calling number list. Wherein the call group "75580900" belongs to the LTE trunking system, the call group "75520901" belongs to the PDT system, and the dual mode terminal using the subscriber number "75580201" selects from which system's network to originate a call according to the attribute of the call group. For example, when a call needs to be initiated to the call group "75580900", outgoing calls from the LTE cluster core network are selected, and when a call group "75520901" needs to be initiated, outgoing calls from the PDT core network are selected. If the user initiates a call in a dialing mode on the dual-mode terminal, the dual-mode terminal may select to call from the corresponding core network according to the network feature code added in front of the number of the calling group (for example, 03 indicates PDT, 04 indicates LTE). If the call initiation fails, switching to another network to initiate the call again. Because the group call needs to be processed in the home processing system of the call group, the dual-mode terminal initiates the group call to the home system of the call group, so that the cross-system call starting can be avoided, the call completing rate is effectively improved, and the call establishing time is reduced.
Referring to fig. 7, a schematic diagram of a dual-mode terminal initiating a single call in the embodiment of the present invention is shown. In order to realize the network-preferred call initiation of the Dual-mode terminal, the Dual-mode terminal using the user number "75580201" can add an attribute for configuring the attribution of the single-call number to LTE, PDT or Dual to the single-call user number in the single-call number list. The user number "75580202" used by the LTE trunking terminal belongs to LTE, the user number "75520210" used by the PDT terminal belongs to PDT, and the user number "75580288" used by the Dual-mode terminal belongs to Dual (i.e. indicates that the Dual-mode terminal belongs to both LTE and PDT). The dual mode terminal using the subscriber number "75580201" can select from which network a single call is originated depending on the attribute of the single call number. For example, when an LTE terminal using the subscriber number "75580202" needs to be called, an outgoing call to the LTE cluster core network may be selected, when a PDT terminal using the subscriber number "75520210" needs to be called, an outgoing call to the PDT core network may be selected, and when a dual-mode terminal using the subscriber number "75580288" needs to be called, an outgoing call to a network with a better current signal may be selected. If the user uses a dialing mode on the Dual-mode terminal, a network feature code (for example, 03 represents PDT, 04 represents LTE, and 05 represents Dual) may be added in front of the number of the single-call user, and the Dual-mode terminal selects to call from the corresponding core network according to the network feature code. If the call initiation fails, switching to another network to initiate the call again. It can be understood that, for a single call in which the called terminal is a single-mode terminal, the calling dual-mode terminal directly initiates the single call to the home system of the called single-mode terminal, so that a cross-system call can be avoided, thereby improving the call completing rate and reducing the call establishing time. For the single call of which the called party is a dual-mode terminal, the dual-mode terminal of the calling party can select a core network with better current signals or prefer a certain core network to initiate the single call according to the strategy, thereby improving the call completing rate.
Referring to fig. 8, a schematic diagram of a preferred network paging dual mode terminal in an embodiment of the present invention is shown. The dual mode terminal using the subscriber number "75580201" is a member of the call group "75580900", i.e., the call group "75580900" includes the subscriber number "75580201". The calling group belongs to an LTE cluster system, and the calling information aiming at the calling group reaches an LTE cluster core network to which the calling group belongs. When the LTE cluster receives a call signaling aiming at the call group, the stored registration state is inquired to find that the user number '75580201' is only registered in the system and is not registered in the PDT system of the opposite party, so that paging is initiated to the dual-mode terminal with the user number '75580201' only in the core network of the system through the eNB base station.
Referring to fig. 9, a schematic diagram of another preferred network paging dual mode terminal in the embodiment of the present invention is shown. The dual mode terminal using the subscriber number "75580201" is a member of the call group "75580900", i.e., the call group "75580900" includes the subscriber number "75580201". The calling group belongs to an LTE cluster system, and the calling information aiming at the calling group reaches an LTE cluster core network to which the calling group belongs. When receiving a call signaling aiming at the call group, the LTE cluster core network inquires the stored registration state to find that the dual-mode terminal user number '75580201' is only registered in the PDT system of the opposite party and is not registered in the system, therefore, the call signaling is sent to the PDT core network through the PDT gateway, so that the PDT core network initiates paging to the dual-mode terminal with the user number '75580201' through the PDT base station.
Referring to fig. 10, a schematic diagram of another preferred way of paging a dual-mode terminal by a network in an embodiment of the present invention is shown. The dual-mode terminal using the subscriber number "75580201" and the LTE terminal using the subscriber number "75580202" are both members of the call group "75580900", i.e., the group member number corresponding to the call group "75580900" may include the subscriber number "75580201" and the subscriber number "75580202. The calling group belongs to an LTE cluster system, and the calling information aiming at the calling group reaches an LTE cluster core network to which the calling group belongs. When receiving the call signaling of the call group, the LTE trunking core network queries the stored registration state to find that the user number "75580201" is registered in the system and the PDT system of the other party at the same time. At this time, if the policy configured by the LTE trunking core network is the resource saving mode, the LTE trunking core network may select to initiate paging to the dual-mode terminal with the user number "75580201" only in the core network of the system through the eNB base station in the system and the PDT system of the other party.
Referring to fig. 11, a schematic diagram of another preferred way of paging a dual-mode terminal by a network in an embodiment of the present invention is shown. The dual mode terminal using the subscriber number "75580201" and the LTE terminal using the subscriber number "75580202" are both members of the call group "75580900", i.e., the call group "75580900" includes the subscriber number "75580201" and the subscriber number "75580202. The calling group belongs to an LTE cluster system, and the calling information aiming at the calling group reaches an LTE cluster core network to which the calling group belongs. When receiving the call signaling of the call group, the LTE trunking core network queries the stored registration state to find that the user number "75580201" is registered in the system and the PDT system of the other party at the same time. At this time, if the policy configured by the LTE trunking core network is the resource loose mode, the LTE trunking core network may initiate paging to the dual-mode terminal with the user number "75580201" through the eNB base station in the core network of the system, and send the call signaling to the PDT core network through the PDT gateway, so that the PDT core network initiates paging to the dual-mode terminal with the user number "75580201" through the PDT base station. The dual mode terminal using the subscriber number "75580201" may receive the paging messages of which the former and latter calling numbers are the same as the called number, and the dual mode terminal may discard the latter received paging message. It should be noted that, if two core networks send paging messages to the same dual-mode terminal for the same single-call request, after the dual-mode terminal receives the first paging message and returns a call response to one core network, the core network that receives the call response may initiate a paging cancellation signaling to the other core network.
Referring to fig. 12, a schematic diagram of another preferred way of paging a dual mode terminal by a network in an embodiment of the present invention is shown. The dual mode terminal using the subscriber number "75580201" and the LTE terminal using the subscriber number "75580202" are both members of the call group "75580900", i.e., the call group "75580900" includes the subscriber number "75580201" and the subscriber number "75580202. The calling group belongs to an LTE cluster system, and the calling information aiming at the calling group reaches an LTE cluster core network to which the calling group belongs. When receiving the call signaling of the call group, the LTE trunking core network queries the stored registration state to find that the user number "75580201" is registered in the system and the PDT system of the other party at the same time. At this time, if the policy configured by the LTE trunking core network is the preferred network mode and the preferred network is the PDT system, the LTE trunking core network may not initiate paging in the system, but send the call signaling to the PDT core network through the PDT gateway, so that the PDT core network initiates paging to the dual-mode terminal with the user number "75580201" through the PDT base station.
Referring to fig. 13, a schematic structural diagram of a calling device in an embodiment of the present invention is shown. The apparatus 1300 may be configured on a first user terminal, comprising:
a generating unit 1301, configured to generate a call request with the first user number as a calling number;
a first determining unit 1302, configured to determine a core network system corresponding to the first call request in multiple core network systems to which the first subscriber number belongs;
a first paging unit 1303, configured to initiate the first call request to a first core network system if the first call request corresponds to the first core network system, so that the first core network system identifies a called number of the first call request, and trigger the first target core network system to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request;
a second call initiating unit 1304, configured to initiate the first call request to a second core network system if the first call request corresponds to the second core network system, so that the second core network system identifies a called number of the first call request, and trigger the second target core network system to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
Optionally, in some implementations of this embodiment, the first core network system is a broadband trunking communication system, the second core network system is a narrowband trunking communication system, and the first core network system and the second core network system belong to the same trunking communication private network.
Optionally, in other embodiments of this embodiment, the first call request is a single call request, and the called number of the first call request is a second subscriber number;
the first determining unit 1302 includes:
a first determining subunit, configured to determine, in the multiple core network systems to which the first subscriber number belongs, a core network system to which the second subscriber number belongs;
the second determining subunit is configured to determine that the first call request corresponds to the first core network system if the second subscriber number only belongs to the first core network system;
a third determining subunit, configured to determine that the first call request corresponds to a second core network system if the second subscriber number only belongs to the second core network system;
and a fourth determining subunit, configured to select, if the second subscriber number belongs to multiple core network systems, a core network system with a best wireless access signal from the multiple core network systems to which the second subscriber number belongs as the core network system corresponding to the call request, where the core network system with the best wireless access signal is the first core network system or the second core network system.
Optionally, in still other embodiments of this embodiment, the first call request is a group call request for a call group;
the first determining unit 1302 includes:
a fifth determining subunit, configured to determine, in the multiple core network systems to which the first subscriber number belongs, an affiliation processing system of the group; wherein the group's home processing system is the only one core network system;
a sixth determining subunit, configured to determine that the first call request corresponds to the first core network system if the home processing system of the group is the first core network system;
and a seventh determining subunit, configured to determine that the first call request corresponds to the second core network system if the home processing system of the group is the second core network system.
Optionally, in further embodiments of this embodiment, the group member numbers of the group include subscriber numbers belonging to multiple core network systems and subscriber numbers belonging to only one core network system.
Optionally, the apparatus 1300 further includes:
a first sending unit, configured to send a registration signaling of the first subscriber number to the first core network system to which the first subscriber number belongs, so that the first core network system sets a first registration state of the first subscriber number to a registered state, and sends the first registration state of the first subscriber number to the second core network system, where the first registration state of the first subscriber number is used to indicate whether the first subscriber number is registered in the first core network system;
a second sending unit, configured to send a registration signaling of the first subscriber number to the second core network system to which the first subscriber number belongs, so that the second core network system sets a second registration state of the first subscriber number to a registered state, and sends the second registration state of the first subscriber number to the first core network system, where the second registration state of the first subscriber number is used to indicate whether the first subscriber number is registered in the second core network system;
the first registration state of the first user number is a registered state, which indicates that the first user number and the first core network system are in a communicable state; the second registration state of the first user number is a registered state, which indicates that the first user number and the second core network system are in a communicable state.
Optionally, the apparatus 1300 further includes:
a first receiving unit, configured to receive a third paging message sent by the first core network system, where the third paging message corresponds to a second call request, and a called number of the second call request corresponds to the first subscriber number;
a second receiving unit, configured to receive a fourth paging message sent by the second core network system, where the fourth paging message corresponds to a third call request, and a called number of the third call request corresponds to the first subscriber number.
Optionally, the second call request and the third call request are the same call request; the second call request is transmitted to the first core network system by a third user terminal and transmitted to the second core network system by the first core network system, or the second call request is transmitted to the second core network system by a third user terminal and transmitted to the first core network system by the second core network system;
the apparatus 1300 further comprises:
a second determining unit, configured to determine, among all received paging messages corresponding to the second call request, a paging message received first;
a discarding unit, configured to discard other paging messages corresponding to the second call request except the first received paging message.
Through the technical scheme of the embodiment, the same user terminal can use the same user number to realize calling through a plurality of different core network systems, so that the user terminal can select a better core network system to start calling, and can select a better core network system to page between the core network systems, thereby realizing calling in a specific mode, improving the call completing rate and shortening the call establishing time.
Referring to fig. 14, a schematic structural diagram of a calling device in an embodiment of the present invention is shown. The apparatus 1400 may be configured on a first core network system, and include:
a first receiving unit 1401, configured to receive a first call request sent by a first user terminal, where a calling number of the first call request is a first user number corresponding to the first user terminal;
a first identifying unit 1402, configured to identify a called number of the first call request;
a determining unit 1403, configured to determine, in response to that a called number of the first call request corresponds to a second subscriber number, a target core network system for paging the second subscriber number in multiple core network systems to which the second subscriber number belongs;
a first paging unit 1404, configured to send a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number if the target core network system is the first core network system;
a second paging unit 1405, configured to send the first call request to the second core network system if the target core network system is the second core network system, so that the second core network system sends a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
Optionally, in some implementation manners of this embodiment, the first core network system is a broadband trunking communication system, the second core network system is a narrowband trunking communication system, and the first core network system and the second core network system belong to the same dedicated trunking communication network, or the first core network system is a narrowband trunking communication system, the second core network system is a broadband trunking communication system, and the first core network system and the second core network system belong to the same dedicated trunking communication network.
Optionally, in other embodiments of this embodiment, the apparatus 1400 further includes:
a third paging unit, configured to send the first paging message to the second user equipment and send the first call request to the second core network system if the target core network system includes the first core network system and the second core network system, so that the second core network system sends the second paging message to the second user equipment;
the first paging message and the second paging message are used by the second user terminal to determine the first received paging message among all received paging messages corresponding to the first call request and to discard other paging messages corresponding to the second call request except the first received paging message.
Optionally, in still other embodiments of this embodiment, the first call request is a single call request or a group call request for a group;
the group member number of the group comprises the first user number and the second user number, the home processing system of the group is the first core network system, and the home processing system of the group is the only one core network system.
Optionally, in further embodiments of this embodiment, the apparatus 1400 further includes:
a second receiving unit, configured to receive a second call request sent by a third user terminal, where a calling number of the second call request is a third user number corresponding to the third user terminal;
a second identification unit, configured to identify a called number of the second call request, where the called number of the second call request corresponds to a fourth subscriber number, and the fourth subscriber number belongs to only one core network system;
a fourth paging unit, configured to send a third paging message corresponding to the second call request to a fourth user terminal corresponding to the fourth user number if the core network system to which the fourth user number belongs is the first core network system;
and a fifth paging unit, configured to send the second call request to the second core network system if the core network system to which the fourth user number belongs is the second core network system, so that the second core network system sends a fourth paging message corresponding to the second call request to a fourth user terminal corresponding to the fourth user number.
Optionally, in still other embodiments of this embodiment, the group member numbers of the group include the first user number, the second user number and the fourth user number, the first call request and the second call request are the same call request, and the first user number is the same as the third user number.
Optionally, in still other embodiments of this embodiment, a first registration state and a second registration state of the second subscriber number are recorded in the first core network system;
the determination unit 1403 includes:
a first determining subunit, configured to determine, according to the first registration state and the second registration state, a core network system in which the current second user number is communicable; if the first registration state is a registered state, the current core network system with the second user number capable of communicating comprises the first core network system, and if the second registration state is a registered state, the current core network system with the second user number capable of communicating comprises the second core network system;
a second determining subunit, configured to determine, in the core network system in which the current second user number is communicable, the target core network system for paging the second user number.
Optionally, the apparatus 1400 further includes:
a first registration unit, configured to receive a registration signaling of the second user number sent by the second user terminal, set a first registration state of the second user number to a registered state, and send the first registration state of the second user number to the second core network system;
and the second registration unit is configured to receive a second registration state of the second subscriber number sent by the second core network system, where the second registration state of the second subscriber number is set to be a registered state by the second core network system after receiving a registration signaling of the second subscriber number sent by the second subscriber terminal, and is sent to the first core network system.
Through the technical scheme of the embodiment, the same user terminal can use the same user number to realize calling through a plurality of different core network systems, so that the user terminal can select a better core network system to start calling, and can select a better core network system to page between the core network systems, thereby realizing calling in a specific mode, improving the call completing rate and shortening the call establishing time.
Referring to fig. 15, a schematic diagram of a hardware structure of a terminal in the embodiment of the present invention is shown. The terminal 1500 is a first user terminal, and the first user terminal corresponds to a first user number. The terminal comprises a processor 1501, a transmitter 1502, a receiver 1503 and a memory 1504;
the processor 1501 performs the following operations:
generating a call request by taking the first user number as a calling number, and determining a core network system corresponding to the first call request in a plurality of core network systems to which the first user number belongs;
if the first call request corresponds to a first core network system, initiating the first call request to the first core network system so that the first core network system can identify a called number of the first call request, and triggering the first target core network system to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request;
if the first call request corresponds to a second core network system, the first call request is initiated to the second core network system, so that the second core network system can identify the called number of the first call request, and the second target core network system is triggered to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
Optionally, in some implementations of this embodiment, the first core network system is a broadband trunking communication system, the second core network system is a narrowband trunking communication system, and the first core network system and the second core network system belong to the same trunking communication private network.
Optionally, in other embodiments of this embodiment, the first call request is a single call request, and the called number of the first call request is a second subscriber number;
in order to determine a core network system corresponding to the first call request from among a plurality of core network systems to which the first subscriber number belongs, the processor 1501 performs the following operations:
determining a core network system to which the second user number belongs in a plurality of core network systems to which the first user number belongs;
if the second user number only belongs to a first core network system, determining that the first call request corresponds to the first core network system;
if the second user number only belongs to a second core network system, determining that the first call request corresponds to the second core network system;
if the second user number belongs to a plurality of core network systems, selecting the core network system with the best wireless access signal from the plurality of core network systems to which the second user number belongs as the core network system corresponding to the call request, wherein the core network system with the best wireless access signal is the first core network system or the second core network system.
Optionally, in still other embodiments of this embodiment, the first call request is a group call request for a group;
in order to determine a core network system corresponding to the first call request from among a plurality of core network systems to which the first subscriber number belongs, the processor 1501 performs the following operations:
determining an attribution processing system of the group in a plurality of core network systems to which the first user number belongs; wherein the group's home processing system is the only one core network system;
if the group attribution processing system is a first core network system, determining that the first call request corresponds to the first core network system;
and if the group of home processing systems is a second core network system, determining that the first call request corresponds to the second core network system.
Optionally, in further embodiments of this embodiment, the group member numbers of the group include subscriber numbers belonging to multiple core network systems and subscriber numbers belonging to only one core network system.
Optionally, in further embodiments of this embodiment, the processor 1501 further performs the following operations:
sending a registration signaling of the first user number to the first core network system to which the first user number belongs, so that the first core network system sets a first registration state of the first user number to a registered state, and sends the first registration state of the first user number to the second core network system, wherein the first registration state of the first user number is used for indicating whether the first user number is registered in the first core network system;
sending a registration signaling of the first user number to the second core network system to which the first user number belongs, so that the second core network system sets a second registration state of the first user number to a registered state, and sends the second registration state of the first user number to the first core network system, wherein the second registration state of the first user number is used for indicating whether the first user number is registered in the second core network system;
the first registration state of the first user number is a registered state, which indicates that the first user number and the first core network system are in a communicable state; the second registration state of the first user number is a registered state, which indicates that the first user number and the second core network system are in a communicable state.
Optionally, in further embodiments of this embodiment, the processor 1501 further performs the following operations:
receiving a third paging message sent by the first core network system, wherein the third paging message corresponds to a second call request, and a called number of the second call request corresponds to the first user number;
and receiving a fourth paging message sent by the second core network system, wherein the fourth paging message corresponds to a third call request, and a called number of the third call request corresponds to the first user number.
Optionally, in still other embodiments of this embodiment, the second call request and the third call request are the same call request; the second call request is transmitted to the first core network system by a third user terminal and transmitted to the second core network system by the first core network system, or the second call request is transmitted to the second core network system by a third user terminal and transmitted to the first core network system by the second core network system;
the processor 1501 also performs the following operations:
and determining the first received paging message in all the received paging messages corresponding to the second call request, and discarding the paging messages corresponding to the second call request except the first received paging message.
Referring to fig. 16, a schematic diagram of a hardware structure of a network system in the embodiment of the present invention is shown. The network system is a first core network system. The network system includes a processor 1601, a transmitter 1602, a receiver 1603, and a memory 1604;
the processor 1601 performs the following operations:
receiving a first call request sent by a first user terminal, wherein a calling number of the first call request is a first user number corresponding to the first user terminal;
identifying a called number of the first call request;
in response to the called number of the first call request corresponding to a second subscriber number, determining a target core network system for paging the second subscriber number in a plurality of core network systems to which the second subscriber number belongs;
if the target core network system is the first core network system, sending a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number;
and if the target core network system is a second core network system, sending the first call request to the second core network system so that the second core network system can send a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
Optionally, in some implementation manners of this embodiment, the first core network system is a broadband trunking communication system, the second core network system is a narrowband trunking communication system, and the first core network system and the second core network system belong to the same dedicated trunking communication network, or the first core network system is a narrowband trunking communication system, the second core network system is a broadband trunking communication system, and the first core network system and the second core network system belong to the same dedicated trunking communication network.
Optionally, in other embodiments of this embodiment, the processor 1601 is further configured to perform the following operations:
if the target core network system comprises the first core network system and the second core network system, sending the first paging message to the second user terminal, and sending the first call request to the second core network system, so that the second core network system sends the second paging message to the second user terminal;
the first paging message and the second paging message are used by the second user terminal to determine the first received paging message among all received paging messages corresponding to the first call request and to discard other paging messages corresponding to the second call request except the first received paging message.
Optionally, in other embodiments of this embodiment, the first call request is a single call request or a group call request for a group;
the group member number of the group comprises the first user number and the second user number, the home processing system of the group is the first core network system, and the home processing system of the group is the only one core network system.
Optionally, in other embodiments of this embodiment, the processor 1601 is further configured to perform the following operations:
receiving a second call request sent by a third user terminal, wherein the calling number of the second call request is a third user number corresponding to the third user terminal;
identifying a called number of the second call request, the called number of the second call request corresponding to a fourth subscriber number, the fourth subscriber number belonging to only one core network system;
if the core network system to which the fourth user number belongs is the first core network system, sending a third paging message corresponding to the second call request to a fourth user terminal corresponding to the fourth user number;
and if the core network system to which the fourth user number belongs is a second core network system, sending the second call request to the second core network system so that the second core network system can send a fourth paging message corresponding to the second call request to a fourth user terminal corresponding to the fourth user number.
Optionally, in other embodiments of this embodiment, the group member numbers of the group include the first user number, the second user number, and the fourth user number, the first call request and the second call request are the same call request, and the first user number is the same as the third user number.
Optionally, in other embodiments of this embodiment, a first registration state and a second registration state of the second subscriber number are recorded in the first core network system;
in order to determine a target core network system for paging the second subscriber number among a plurality of core network systems to which the second subscriber number belongs, the processor 1601 performs the following operations:
determining a core network system which can communicate the current second user number according to the first registration state and the second registration state; if the first registration state is a registered state, the current core network system with the second user number capable of communicating comprises the first core network system, and if the second registration state is a registered state, the current core network system with the second user number capable of communicating comprises the second core network system;
and determining the target core network system for paging the second user number in the core network system in which the current second user number can be communicated.
Optionally, in other embodiments of this embodiment, the processor 1601 is further configured to perform the following operations:
receiving a registration signaling of the second user number sent by the second user terminal, setting a first registration state of the second user number as a registered state, and sending the first registration state of the second user number to the second core network system;
and receiving a second registration state of the second user number sent by the second core network system, wherein the second registration state of the second user number is set to be a registered state by the second core network system after receiving a registration signaling of the second user number sent by the second user terminal and sent to the first core network system.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
For the embodiments of the apparatus, the terminal and the network system, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The embodiments of the apparatus, the terminal and the network system described above are merely illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing is directed to embodiments of the present invention, and it is understood that various modifications and improvements may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (20)

1. A calling method is applied to a first user terminal, wherein the first user terminal corresponds to a first user number, and the method comprises the following steps:
generating a first call request by taking the first user number as a calling number, and determining a core network system corresponding to the first call request in a plurality of core network systems to which the first user number belongs;
if the first call request corresponds to a first core network system, initiating the first call request to the first core network system so that the first core network system can identify a called number of the first call request, and triggering a first target core network system to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request;
if the first call request corresponds to a second core network system, the first call request is initiated to the second core network system, so that the second core network system can identify the called number of the first call request, and a second target core network system is triggered to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
2. The method according to claim 1, wherein the first core network system is a broadband trunking communication system, the second core network system is a narrowband trunking communication system, and the first core network system and the second core network system belong to the same private trunking communication network.
3. The method of claim 1, wherein the first call request is a single call request, and wherein the called number of the first call request is a second subscriber number;
the determining, in the plurality of core network systems to which the first subscriber number belongs, a core network system corresponding to the first call request includes:
determining a core network system to which the second user number belongs in a plurality of core network systems to which the first user number belongs;
if the second user number only belongs to a first core network system, determining that the first call request corresponds to the first core network system;
if the second user number only belongs to a second core network system, determining that the first call request corresponds to the second core network system;
if the second user number belongs to a plurality of core network systems, selecting the core network system with the best wireless access signal from the plurality of core network systems to which the second user number belongs as the core network system corresponding to the call request, wherein the core network system with the best wireless access signal is the first core network system or the second core network system.
4. The method of claim 1, wherein the first call request is a group call request for a group;
the determining, in the plurality of core network systems to which the first subscriber number belongs, a core network system corresponding to the first call request includes:
determining an attribution processing system of the group in a plurality of core network systems to which the first user number belongs; wherein the group's home processing system is the only one core network system;
if the group attribution processing system is a first core network system, determining that the first call request corresponds to the first core network system;
and if the group of home processing systems is a second core network system, determining that the first call request corresponds to the second core network system.
5. The method of claim 4, wherein the group member numbers of the group comprise subscriber numbers belonging to a plurality of core network systems and subscriber numbers belonging to only one core network system.
6. The method of claim 1, further comprising:
sending a registration signaling of the first user number to the first core network system to which the first user number belongs, so that the first core network system sets a first registration state of the first user number to a registered state, and sends the first registration state of the first user number to the second core network system, wherein the first registration state of the first user number is used for indicating whether the first user number is registered in the first core network system;
sending a registration signaling of the first user number to the second core network system to which the first user number belongs, so that the second core network system sets a second registration state of the first user number to a registered state, and sends the second registration state of the first user number to the first core network system, wherein the second registration state of the first user number is used for indicating whether the first user number is registered in the second core network system;
the first registration state of the first user number is a registered state, which indicates that the first user number and the first core network system are in a communicable state; the second registration state of the first user number is a registered state, which indicates that the first user number and the second core network system are in a communicable state.
7. The method of claim 1, further comprising:
receiving a third paging message sent by the first core network system, wherein the third paging message corresponds to a second call request, and a called number of the second call request corresponds to the first user number;
and receiving a fourth paging message sent by the second core network system, wherein the fourth paging message corresponds to a third call request, and a called number of the third call request corresponds to the first user number.
8. The method of claim 7, wherein the second call request and the third call request are the same call request; the second call request is transmitted to the first core network system by a third user terminal and transmitted to the second core network system by the first core network system, or the second call request is transmitted to the second core network system by a third user terminal and transmitted to the first core network system by the second core network system;
the method further comprises the following steps:
and determining the first received paging message in all the received paging messages corresponding to the second call request, and discarding the paging messages corresponding to the second call request except the first received paging message.
9. A calling method applied to a first core network system, comprising:
receiving a first call request sent by a first user terminal, wherein a calling number of the first call request is a first user number corresponding to the first user terminal;
identifying a called number of the first call request;
in response to the called number of the first call request corresponding to a second subscriber number, determining a target core network system for paging the second subscriber number in a plurality of core network systems to which the second subscriber number belongs;
if the target core network system is the first core network system, sending a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number;
and if the target core network system is a second core network system, sending the first call request to the second core network system so that the second core network system can send a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
10. The method according to claim 9, wherein the first core network system is a broadband trunking communication system, the second core network system is a narrowband trunking communication system, and the first core network system and the second core network system belong to the same private trunking communication network;
or the like, or, alternatively,
the first core network system is a narrow-band trunking communication system, the second core network system is a broadband trunking communication system, and the first core network system and the second core network system belong to the same trunking communication private network.
11. The method of claim 9, further comprising:
if the target core network system comprises the first core network system and the second core network system, sending the first paging message to the second user terminal, and sending the first call request to the second core network system, so that the second core network system sends the second paging message to the second user terminal;
the first paging message and the second paging message are used by the second user terminal to determine the first received paging message among all received paging messages corresponding to the first call request and to discard other paging messages corresponding to the first call request except the first received paging message.
12. The method of claim 9, wherein the first call request is a single call request or a group-directed group call request;
the group member number of the group comprises the first user number and the second user number, the home processing system of the group is the first core network system, and the home processing system of the group is the only one core network system.
13. The method of claim 12, further comprising:
receiving a second call request sent by a third user terminal, wherein the calling number of the second call request is a third user number corresponding to the third user terminal;
identifying a called number of the second call request, the called number of the second call request corresponding to a fourth subscriber number, the fourth subscriber number belonging to only one core network system;
if the core network system to which the fourth user number belongs is the first core network system, sending a third paging message corresponding to the second call request to a fourth user terminal corresponding to the fourth user number;
and if the core network system to which the fourth user number belongs is a second core network system, sending the second call request to the second core network system so that the second core network system can send a fourth paging message corresponding to the second call request to a fourth user terminal corresponding to the fourth user number.
14. The method of claim 13, wherein the group member numbers of the group include the first subscriber number, the second subscriber number, and the fourth subscriber number, wherein the first call request and the second call request are the same call request, and wherein the first subscriber number is the same as the third subscriber number.
15. The method according to claim 9, wherein a first registration status and a second registration status of the second subscriber number are recorded in the first core network system;
the determining a target core network system for paging the second subscriber number in a plurality of core network systems to which the second subscriber number belongs includes:
determining a core network system which can communicate the current second user number according to the first registration state and the second registration state; if the first registration state is a registered state, the current core network system with the second user number capable of communicating comprises the first core network system, and if the second registration state is a registered state, the current core network system with the second user number capable of communicating comprises the second core network system;
and determining the target core network system for paging the second user number in the core network system in which the current second user number can be communicated.
16. The method of claim 15, further comprising:
receiving a registration signaling of the second user number sent by the second user terminal, setting a first registration state of the second user number as a registered state, and sending the first registration state of the second user number to the second core network system;
and receiving a second registration state of the second user number sent by the second core network system, wherein the second registration state of the second user number is set to be a registered state by the second core network system after receiving a registration signaling of the second user number sent by the second user terminal and sent to the first core network system.
17. A calling device is characterized in that the calling device is configured at a first user terminal, and the first user terminal corresponds to a first user number; the device comprises:
a generating unit, configured to generate a first call request by using the first user number as a calling number;
a first determining unit, configured to determine, in a plurality of core network systems to which the first subscriber number belongs, a core network system corresponding to the first call request;
a first paging unit, configured to initiate, if the first call request corresponds to a first core network system, the first call request to the first core network system, so that the first core network system identifies a called number of the first call request, and trigger a first target core network system to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request;
and the second call initiating unit is used for initiating the first call request to the second core network system if the first call request corresponds to the second core network system so that the second core network system can identify the called number of the first call request and trigger a second target core network system to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
18. A calling device, which is arranged in a first core network system, comprising:
a first receiving unit, configured to receive a first call request sent by a first user terminal, where a calling number of the first call request is a first user number corresponding to the first user terminal;
a first identification unit, configured to identify a called number of the first call request;
a first determining unit, configured to determine, in response to that a called number of the first call request corresponds to a second subscriber number, a target core network system for paging the second subscriber number among a plurality of core network systems to which the second subscriber number belongs;
a first paging unit, configured to send a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number if the target core network system is the first core network system;
and the second paging unit is used for sending the first call request to the second core network system if the target core network system is the second core network system so that the second core network system can send a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
19. A terminal comprising a processor, a transmitter, a receiver, and a memory; the terminal is a first user terminal, and the first user terminal corresponds to a first user number;
the processor performs the following operations:
generating a first call request by taking the first user number as a calling number, and determining a core network system corresponding to the first call request in a plurality of core network systems to which the first user number belongs;
if the first call request corresponds to a first core network system, initiating the first call request to the first core network system so that the first core network system can identify a called number of the first call request, and triggering a first target core network system to send a first paging message corresponding to the first call request to a second user terminal corresponding to the called number of the first call request;
if the first call request corresponds to a second core network system, the first call request is initiated to the second core network system, so that the second core network system can identify the called number of the first call request, and a second target core network system is triggered to send a second paging message corresponding to the first call request to a third user terminal corresponding to the called number of the first call request.
20. A network system comprising a processor, a transmitter, a receiver, and a memory; the network system is a first core network system;
the processor performs the following operations:
receiving a first call request sent by a first user terminal, wherein a calling number of the first call request is a first user number corresponding to the first user terminal;
identifying a called number of the first call request;
in response to the called number of the first call request corresponding to a second subscriber number, determining a target core network system for paging the second subscriber number in a plurality of core network systems to which the second subscriber number belongs;
if the target core network system is the first core network system, sending a first paging message corresponding to the first call request to a second user terminal corresponding to the second user number;
and if the target core network system is a second core network system, sending the first call request to the second core network system so that the second core network system can send a second paging message corresponding to the first call request to a second user terminal corresponding to the second user number.
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