CN115942293A - Roaming call method, narrow band system and computer readable storage medium - Google Patents
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Abstract
The application discloses a roaming call method, a narrowband system and a computer readable storage medium, wherein the roaming call method comprises the following steps: the narrowband system receives call request information sent by a narrowband terminal; judging whether the called terminal is a broadband terminal or not and whether the narrowband terminal is in a roaming state or not according to the call request information; if the called terminal is a broadband terminal and the narrowband terminal is in a roaming state, the narrowband system sends the call request information to the home narrowband system corresponding to the narrowband terminal, so that the home narrowband system sends the call request information to the broadband system of the broadband terminal, and the broadband system sends the call request information to the broadband terminal, thereby realizing the call of the roaming narrowband terminal to the broadband terminal. By the mode, the calling of the narrowband terminal to the broadband terminal in roaming can be realized.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a roaming call method, a narrowband system, and a computer-readable storage medium.
Background
At present, dialing resources are scarce, a communication connection is required to be established with Broadband public network talkback services (broadbands, POC) under the background of national networking of a narrow-band Police Digital Trunking system (PDT), and when the narrowband Police Digital Trunking system and the Broadband public network talkback services adopt the same dialing rules, a single call between a Broadband terminal under a Broadband system and a narrow-band terminal under a narrow-band system can be realized.
Disclosure of Invention
The application provides a roaming call method, a narrowband system and a computer readable storage medium, which can realize the call of a narrowband terminal to a broadband terminal in roaming.
In order to solve the technical problem, the technical scheme adopted by the application is as follows: a roaming call method is provided, the roaming call method including: the narrowband system receives call request information sent by a narrowband terminal; judging whether the called terminal is a broadband terminal or not and whether the narrowband terminal is in a roaming state or not according to the call request information; if the called terminal is a broadband terminal and the narrowband terminal is in a roaming state, the narrowband system sends the call request information to a home narrowband system corresponding to the narrowband terminal, so that the home narrowband system sends the call request information to the broadband system of the broadband terminal, and the broadband system sends the call request information to the broadband terminal, thereby realizing the call of the roaming narrowband terminal to the broadband terminal.
In order to solve the above technical problem, another technical solution adopted by the present application is: a roaming call method is provided, the roaming call method including: the narrowband terminal sends call request information to a narrowband system; the narrowband system judges whether the called terminal is a broadband terminal or not and whether the narrowband terminal is in a roaming state or not according to the call request information; if the called terminal is a broadband terminal and the narrowband terminal is in a roaming state, the narrowband system sends the call request information to a home narrowband system corresponding to the narrowband terminal; the home narrow band system sends the call request information to a wide band system of the wide band terminal; and then the broadband system sends the call request information to the broadband terminal, so that the call of the roaming narrowband terminal to the broadband terminal is realized.
In order to solve the above technical problem, the present application adopts another technical solution: there is provided a narrowband system comprising a memory and a processor connected to each other, wherein the memory is used for storing a computer program, and the computer program is used for implementing the roaming call method in the above technical scheme when being executed by the processor.
In order to solve the above technical problem, the present application adopts another technical solution: there is provided a computer readable storage medium for storing a computer program for implementing a roaming call method in the above technical solution when the computer program is executed by a processor.
Through the scheme, the beneficial effects of the application are that: after receiving the call request information sent by the narrowband terminal, the narrowband system judges whether the called party is a broadband terminal and whether the narrowband terminal is in a roaming state according to the call request information; if the called terminal is a broadband terminal and the narrowband terminal is in a roaming state, the narrowband system sends the call request information to the home narrowband system corresponding to the narrowband terminal, so that the home narrowband system sends the call request information to the broadband system of the broadband terminal, and then the home narrowband system sends the call request information to the broadband terminal to finally realize the call of the narrowband terminal to the broadband terminal in roaming.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
FIG. 1 is a schematic block diagram of an embodiment of a communication system provided herein;
FIG. 2 is a flowchart illustrating a roaming call method according to an embodiment of the present disclosure;
FIG. 3 is a flow chart illustrating a roaming call method according to another embodiment of the present application;
fig. 4 is a schematic structural diagram of an embodiment of a narrowband system provided by the present application;
FIG. 5 is a schematic structural diagram of an embodiment of a computer-readable storage medium provided in the present application.
Detailed Description
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 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.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a communication system provided in the present application, the communication system including: the narrowband system and the broadband system can be arranged according to regions, at least one broadband system can be correspondingly arranged in each local administrative district, fig. 1 takes the situation that one broadband system corresponds to each local administrative district as an example, the broadband system in each local administrative district is only in communication connection with the narrowband system in the corresponding local administrative district, the narrowband systems among the local administrative districts are in communication connection with each other to form a communication network, and therefore single calling of the narrowband terminal to the broadband terminal is achieved through the communication network by adopting a roaming calling method.
It can be understood that the broadband system is only in communication connection with the narrowband systems in the same local administrative district and is not in communication connection with the narrowband systems in other local administrative districts, and the narrowband systems can be connected with the narrowband systems in the same local administrative district or connected with the narrowband systems between different local administrative districts; in other specific embodiments, at least one broadband system may be correspondingly arranged in each provincial administrative district, and then the broadband system in each provincial administrative district is in communication connection with the narrowband system in the same provincial administrative district.
In a specific embodiment, the narrow-band system can be a PDT system, as shown by PDT 1-PDT4 in fig. 1, and the wide-band system can be a POC system, as shown by POC 1-POC 2 in fig. 1, and the following embodiments describe the PDT system and the POC system as examples of the roaming call method, the POC terminal under the POC system cannot roam, and the call from the PDT terminal in roaming to the POC terminal can be realized by the roaming call method described below. It is understood that in other embodiments, the broadband System may also be a terrestrial Trunked Radio System (TETRA) or a Digital Mobile Radio (DMR), but is not limited thereto.
Referring to fig. 2, fig. 2 is a flowchart illustrating a roaming call method according to an embodiment of the present disclosure, the method including:
step 21: and the PDT system receives the call request information sent by the PDT terminal.
Step 22: and judging whether the called terminal is a POC terminal or not and whether the PDT terminal is in a roaming state or not according to the calling request information.
Step 23: if the called terminal is a POC terminal and the PDT terminal is in a roaming state, the PDT system sends the call request information to the home PDT system corresponding to the PDT terminal.
The PDT system determines whether the called terminal is the POC terminal and whether the PDT terminal is in the roaming state after receiving the call request message, and the operations of determining whether the called terminal is the broadband terminal and determining whether the narrowband terminal is in the roaming state in this embodiment may be performed simultaneously, where the order of the two determination operations is not limited.
Specifically, the PDT terminal is in a roaming state, that is, it leaves the home location of the registered network, and roams to a roaming area different from the home location, and at this time, it is connected to the PDT system in the corresponding roaming area, that is, the PDT terminal in roaming is connected to the local corresponding PDT system in the current roaming area, and the PDT system in roaming area is hereinafter referred to as the PDT system accessed by the PDT system in roaming area, it can be understood that the "roaming area" in the PDT system in roaming area refers to the area where the PDT terminal in roaming area is currently located, only with respect to the PDT terminal in roaming area; for example, the home location of the registered PDT terminal is fertile, and when the PDT terminal roams to hangzhou, the roaming location is hangzhou, the PDT system of the roaming location correspondingly accessed by the PDT terminal is the PDT system corresponding to hangzhou area, and when the PDT terminal roams to beijing, the PDT system of the roaming location correspondingly accessed by the PDT terminal is the PDT system corresponding to beijing area. It can be understood that the PDT system corresponding to the home location where the PDT terminal is registered to access the network is the home location PDT system, for example, the above-mentioned combined-fertilizer PDT system; the PDT system of the roaming place is a local PDT system accessed by the PDT terminal in the roaming place, the PDT terminal can be connected to the local corresponding PDT system according to the roaming area, and when the PDT terminal initiates a call to a called terminal, the PDT terminal sends the call request information to the local corresponding PDT system connected with the PDT terminal.
If the called terminal is a POC terminal and the PDT terminal is in a roaming state (the current location is not the home location), the PDT terminal sends calling request information to a local corresponding PDT system (namely the roaming PDT system), and the roaming PDT system sends the calling request information to the home PDT system corresponding to the PDT terminal, so that the home PDT system sends the calling request information to the POC system of the called POC terminal, and then the POC system sends the calling request information to the POC terminal, so that the calling of the PDT terminal in roaming to the POC terminal is realized; specifically, a plurality of POC terminals are connected to the POC system, and the call request information may be sent to the corresponding POC terminal through the POC system, so as to establish a call connection between the PDT terminal and the corresponding POC terminal.
Please refer to fig. 1, at this time, the method can be described with the communication system in fig. 1, taking the PDT terminal initiating the call as UE 2, the called POC terminal as UE 1, and the PDT terminal UE 2 roams from the city where the PDT 1 system is located to the city where the PDT4 system is located, the PDT system roaming to the home location is PDT4 system, and the PDT system home location is PDT 1 system, when the UE 2 initiates the call request, the PDT4 system forwards the call request information to the PDT 1 system, so that the PDT 1 system forwards the call request information to the POC 1 service in communication connection with the PDT 1 system, and forwards the call request information to the UE 1 through the POC 1 service, thereby implementing the call of the UE 2 to the UE 1.
In this embodiment, after receiving the call request information sent by the narrowband terminal, the narrowband system determines whether the called party is a wideband terminal and whether the narrowband terminal is in a roaming state according to the call request information; if the called terminal is a broadband terminal and the narrowband terminal is in a roaming state, the narrowband system sends the call request information to the home narrowband system corresponding to the narrowband terminal, so that the home narrowband system sends the call request information to the broadband system of the broadband terminal, and then the home narrowband system sends the call request information to the broadband terminal to finally realize the call of the roaming narrowband terminal to the broadband terminal, and the call of the roaming narrowband terminal to the broadband terminal can be realized without addressing according to the number information of the called narrowband terminal, so that the number resource occupied by the narrowband terminal can be saved.
In a specific embodiment, when the called terminal is not a POC terminal, that is, the called terminal is a PDT terminal, and the PDT terminal initiating the call is in a roaming state, the PDT system of the roaming location receiving the call request information may directly forward the call request information to the PDT system where the called PDT terminal is currently located, so that the PDT system where the called PDT terminal is currently located forwards the call request information to the called PDT terminal; when the called terminal is not a POC terminal and the PDT terminal initiating the call is not in a roaming state, the PDT system at the home location receives the call request information, and similarly, the PDT system at the home location forwards the call request information to the PDT system where the called PDT terminal is currently located, so that the PDT system forwards the call request information to the called PDT terminal; when the called terminal is a POC terminal and the PDT terminal is not in a roaming state, the PDT system of the home location receiving the call request information may directly forward the call request information to the POC system of the home location connected to the PDT system of the home location, so that the POC system forwards the call request information to the corresponding POC terminal, thereby establishing a call connection.
Please refer to fig. 3, fig. 3 is a schematic flowchart of another embodiment of a roaming call method provided in the present application, and this embodiment describes a roaming call method when a calling terminal is a PDT terminal and is in a roaming state, for convenience of description, in this embodiment, a PDT terminal in roaming which initiates a call request is referred to as a calling roaming PDT terminal, a PDT system corresponding to a roaming place where the calling roaming PDT terminal is currently located is referred to as a roaming place PDT system, a POC system corresponding to a home place where the calling roaming PDT terminal belongs to is referred to as a home place POC system, and a PDT system corresponding to a home place where the calling roaming PDT terminal is located when the calling roaming PDT terminal is registered into a network is referred to as a home place PDT system; in a specific embodiment, the calling roaming PDT terminal and the called POC terminal may belong to the same home, and the determination criterion of the same home is that the local administrative areas of the home are the same, that is, the roaming call method in this embodiment may be applied to call between the roaming PDT terminal and the POC terminal belonging to the same local administrative area, for example, the PDT terminal belonging to suzhou city roams to shanghai city, and calls the POC terminal in suzhou city, so that the roaming call method in this embodiment may be used to implement the current call, and the roaming call method includes:
step 31: and the calling roaming PDT terminal sends the calling request information for calling the POC terminal to the roaming PDT system.
Step 32: and the PDT system at the roaming place sends the call request information to the PDT system at the home place corresponding to the PDT terminal at the calling roaming place.
In a specific embodiment, the number of the calling roaming PDT terminal can be used to obtain the home location and the home location PDT system of the calling roaming PDT terminal, and then the call request information is sent to the home location PDT system. Specifically, the calling request information sent by the calling roaming PDT terminal to the roaming PDT system comprises the number of the calling roaming PDT terminal, calling information content and the number of a called POC terminal, wherein the number of the calling roaming PDT terminal comprises area code information, and the area code information represents the attribution information of the calling roaming PDT terminal, can be used for identifying the attribution PDT system of the calling roaming PDT terminal, and can acquire the attribution PDT system and the attribution PDT system of the calling roaming PDT terminal according to the area code information in the number of the calling roaming PDT terminal.
Specifically, the area code information may be represented by the first three digits of the number of the calling roaming PDT terminal, for example, if the number of the calling roaming PDT terminal is 55320201, the area code information included therein is 553, and the area code 553 corresponds to the turnip lake city, and then the area code information may be used to obtain that the home location of the calling roaming PDT terminal is in the turnip lake city and the corresponding home location PDT system is the turnip lake PDT system, so that the roaming location PDT system may send the call request information to the turnip lake PDT system.
Furthermore, the dialing rules supported by the existing PDT system include an MPT1327 dialing rule and a PDT dialing rule, the dialing rule adopted by the PDT terminal may be the PDT dialing rule, and the dialing rule adopted by the POC terminal may be an MPT1327 dialing rule or a PDT dialing rule; the PDT dialing rule includes a number segment corresponding to the area code range of 328-806, and the selectable number range is 32820200-80689549, in which case the number in the number segment can be used as the number of the PDT terminal, and further includes a number segment having an area code range of 200-327, and the number segment is used as the reserved number segment, and the number in the reserved number segment can be used as the number of the POC terminal in the following embodiments. It is understood that, in order to avoid occupying number resources, the PDT terminal may employ numbers that are not used under the PDT dialing rules, and the POC terminal may employ numbers that are not used under the MPT1327 dialing rules or numbers that are not used under the PDT rules.
Step 33: and the home PDT system sends the call request information to a home POC system of the called POC terminal.
In a specific embodiment, after receiving the call request information, the PDT system at the home location may obtain the home location of the PDT terminal at the calling roaming location according to the area code information in the number of the PDT terminal at the calling roaming location, determine the home location of the PDT terminal at the calling roaming location, determine whether the PDT terminal at the calling roaming location is a home local number, and determine whether the terminal at the called location is a POC terminal.
In one embodiment, the types of terminals (including POC terminals and PDT terminals) can be distinguished by setting different number segments, for example, different area code information can be set to distinguish POC terminals and PDT terminals, numbers with area code information in the range of 200-327 can be set as numbers of POC terminals, and numbers with area code information not in the range can be set as numbers of PDT terminals, for example, numbers with area code information of 328. In other embodiments, the numbers can be distinguished by setting the number range of the first five digits or the first six digits of the numbers, and the specific distinguishing method and the numerical value setting can be selected according to actual conditions.
Step 34: and the home POC system sends the calling request information to the called POC terminal so as to realize the calling of the calling roaming PDT terminal to the called POC terminal.
Since the roaming call method in this embodiment only needs to determine the number of the calling roaming PDT terminal, the same number may be reused for POC terminals in different city-level administrative areas, for example, numbers 20020200 to 32720200 are used for numbers of all POC terminals in suzhou city, and numbers 20020200 to 32720200 are also used for numbers of POC terminals in other city-level administrative areas except suzhou city, so that the effect of saving number resources can be further achieved.
After receiving the calling request information, the home POC system forwards the calling request information to the corresponding called POC terminal according to the number of the called POC terminal contained in the calling request information, so that the called POC terminal responds according to the calling information content contained in the calling request information after receiving the calling request information, and calling of the calling roaming PDT terminal to the called POC terminal is realized.
In this embodiment, the home location is determined according to the number of the calling roaming narrowband terminal, the call request information is forwarded to the corresponding home location narrowband system, the call request information is forwarded to the home location broadband system through the communication connection between the home location narrowband system and the home location broadband system, and finally the call request information is forwarded to the called broadband terminal through the home location broadband system, so as to realize the single call of the calling roaming narrowband terminal to the called broadband terminal; the PDT terminal and the POC terminal adopt numbers under the MPT1327 dialing rule or numbers which are not distributed under the PDT rule, and meanwhile, the POC terminals in different city administrative areas can repeatedly use the same numbers because a mode of calling and addressing the numbers of the calling roaming narrowband terminal is adopted, so that the number occupied resources can be further saved.
In a specific embodiment, the PDT system may further store a POC terminal number library under the POC system of the same home location, when the calling roaming PDT terminal initiates a call request to the called POC terminal, the PDT system at the roaming location forwards the received call request information to the PDT system at the home location, the PDT system at the home location may determine whether the number of the called POC terminal is in the POC terminal number library under the POC system at the home location, and if the number of the called POC terminal is in the POC terminal number library under the POC system at the home location, it indicates that the called POC terminal and the calling roaming PDT terminal belong to the same home location at the moment, and the PDT system at the home location sends the call request information to the POC system at the home location, so that the POC system at the home location sends the call request information to the called broadband terminal, thereby establishing a call connection between the calling roaming PDT terminal and the called POC terminal that belong to the same home location.
If the number of the called POC terminal is not in the POC terminal number library under the home POC system, the home PDT system can forward the call request information to the roaming PDT system and feed back the call failure information to the roaming PDT system.
In another specific embodiment, after receiving the call request message, the PDT system at the roaming location may determine whether the number of the called POC terminal is in the POC terminal number pool under the POC system at the roaming location where the PDT terminal is located, and if the number of the called POC terminal is in the POC terminal number pool under the POC system at the roaming location where the PDT terminal is located, then the PDT system at the roaming location may establish a call connection between the calling PDT terminal and the corresponding POC terminal under the POC system at the roaming location, and forward the call request message to the POC system at the roaming location, so that the POC system at the roaming location forwards the call request message to the corresponding POC terminal to establish a call connection between the calling PDT terminal at the roaming location and the POC terminal at the roaming location. It can be understood that, if the number of the called POC terminal is not in the POC terminal number library in the POC system of the roaming location of the PDT terminal, it indicates that the call request has failed.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of a narrowband system provided by the present application, where the narrowband system 40 includes a memory 41 and a processor 42 connected to each other, the memory 41 is used for storing a computer program, and the computer program is used for implementing the roaming call method in the foregoing embodiment when being executed by the processor 42.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of a computer-readable storage medium 50 provided by the present application, where the computer-readable storage medium 50 is used for storing a computer program 51, and the computer program 51 is used for implementing the roaming call method in the foregoing embodiment when being executed by a processor.
The computer readable storage medium 50 may be a server, a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and various media capable of storing program codes.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules or units is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Units described as separate parts may or may not be physically separate, and 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 units can be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. A method for roaming calls, comprising:
a narrowband system receives call request information sent by a narrowband terminal;
judging whether the called terminal is a broadband terminal or not and whether the narrowband terminal is in a roaming state or not according to the call request information;
if the called terminal is a broadband terminal and the narrowband terminal is in a roaming state, the narrowband system sends the call request information to a home narrowband system corresponding to the narrowband terminal, so that the home narrowband system sends the call request information to the broadband system of the broadband terminal, and the broadband system sends the call request information to the broadband terminal, thereby realizing the call of the roaming narrowband terminal to the broadband terminal.
2. The roaming call method of claim 1,
and the narrowband terminal and the broadband terminal belong to the same home.
3. The roaming call method of claim 2, comprising:
the call request information comprises the number of the narrowband terminal, the call information content and the number of the broadband terminal;
the number of the narrowband terminal contains area code information, and the area code information is used for identifying a narrowband system of a home location of the narrowband terminal, and the method further comprises the following steps:
and acquiring the home location of the narrowband terminal and the home narrowband system by using the number of the narrowband terminal.
4. The roaming call method of claim 2, wherein,
and the judgment standard of the same attribution place is that the local administrative areas to which the attribution places belong are the same.
5. The roaming call method of claim 4, wherein,
each local administrative district corresponds to at least one broadband system; the broadband system is in communication connection with the narrowband system belonging to the same home; or
Broadband terminals that belong to different local administrative districts use the same call number.
6. The roaming call method of claim 1,
the number of the narrow-band terminal adopts a dialing rule which is a PDT dialing rule, and the number of the wide-band terminal adopts a dialing rule which is an MPT1327 dialing rule or a PDT dialing rule.
7. The roaming call method of claim 1, wherein after the narrowband system sends the call request message to a home narrowband system corresponding to the narrowband terminal, the method further comprises:
the calling request information comprises the number of the called broadband terminal, and the narrowband system of the home location stores a broadband terminal number library under the broadband system of the same home location;
the home narrow band system judges whether the number of the broadband terminal is in a broadband terminal number library under the broadband system;
if so, sending the call request information to the broadband system, so that the broadband system sends the call request information to the broadband terminal;
if not, the home narrow band system sends the call request information to the narrow band system, and feeds back call failure information to the narrow band system.
8. A method for roaming calls, comprising:
the narrowband terminal sends call request information to a narrowband system;
the narrowband system judges whether the called terminal is a broadband terminal or not and whether the narrowband terminal is in a roaming state or not according to the call request information;
if the called terminal is a broadband terminal and the narrowband terminal is in a roaming state, the narrowband system sends the call request information to a home narrowband system corresponding to the narrowband terminal;
the home narrow band system sends the call request information to a broadband system of the broadband terminal;
and then the broadband system sends the call request information to the broadband terminal to realize the call of the narrowband terminal to the broadband terminal in roaming.
9. A narrowband system comprising a memory and a processor connected to each other, wherein the memory is adapted to store a computer program, which when executed by the processor is adapted to implement the roaming call method of any of claims 1-8.
10. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, is configured to implement the roaming call method of any one of claims 1-8.
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