CN111586593B - Method, device and storage medium for initiating temporary group call - Google Patents
Method, device and storage medium for initiating temporary group call Download PDFInfo
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- CN111586593B CN111586593B CN201910127811.0A CN201910127811A CN111586593B CN 111586593 B CN111586593 B CN 111586593B CN 201910127811 A CN201910127811 A CN 201910127811A CN 111586593 B CN111586593 B CN 111586593B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
Abstract
The embodiment of the invention provides a method, a device and a storage medium for initiating a temporary group call, which allocate a temporary group number to a temporary group in advance and allocate a group key identifier corresponding to the temporary group number to a user in the temporary group. Then, the terminal equipment of the calling user sends a group call establishment request carrying a temporary group number and a called user identifier to the service server, the service server receives the group call establishment request, initiates a group call establishment flow to the terminal equipment of the called user corresponding to the called user identifier to establish a temporary group, and sends a group call establishment response message to the terminal equipment of the calling user, so that the calling user and the called user in the temporary group can encrypt data by using a group key after the temporary group is successfully established, and the purpose of ensuring data security is realized.
Description
Technical Field
The embodiment of the invention relates to the field of trunking communication, in particular to a method, a device and a storage medium for initiating a temporary group call.
Background
The third Generation mobile Partnership Project (3 GPP) defines a Mission Critical Push To Talk (MCPTT) standard that addresses the group call problem in the field of emergency communication based on Long Term Evolution (LTE) broadband bearers, wherein the field of emergency communication includes public safety class applications (e.g., fire and police systems), general commercial class applications (e.g., railway and urban subway systems), and the like.
The group call includes a group call, a private call, an emergency call, and so on. However, in some disaster situations, the dispatch station may want to temporarily select a certain group and/or certain users to initiate a call. For this purpose, the MCPTT standard defines a temporary group call initiation procedure, by which a dispatcher establishes a group and/or users to be called as a temporary group, and then initiates a call to the users in the temporary group. In the process, under the condition that no group exists, the dispatching station sends a group call establishment request to the MCPTT server, wherein the group call establishment request carries the user identification, the temporary group identification and the like contained in the temporary group. After receiving the group call establishment request, the MCPTT server determines the group call establishment request to be used for requesting to establish a temporary group according to the temporary group identification. The MCPTT server then assigns a temporary group number and automatically associates the temporary group number with the identification of the temporary group user, thereby establishing a temporary group.
In order to ensure communication security, each user in the group is required to encrypt data, and therefore, a group key needs to be uniformly distributed to the users in the group. However, in the temporary group call initiation process, no technical scheme for distributing group keys is involved, so that each user in the group cannot encrypt data, and data security cannot be guaranteed. Therefore, how to initiate a temporary group call to ensure data security is a problem to be urgently solved in the industry.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a storage medium for initiating a temporary group call, which are used for ensuring that each user in a temporary group is allocated with a group key by allocating a temporary group number for the temporary group in advance, allocating a group key corresponding to the temporary group number for the user in the temporary group and initiating the temporary group call according to the temporary group number so as to ensure that the data security is ensured.
In a first aspect, an embodiment of the present invention provides a method for initiating a temporary group call, including:
a terminal device sends a group call establishment request to a service server, wherein the group call establishment request carries a temporary group number and a called user identifier, the terminal device is a terminal device of a calling user, the temporary group number corresponds to at least one group key identifier, each group key identifier in the at least one group key identifier corresponds to a group key, the temporary group number also corresponds to a user set, the user set comprises at least two users, the calling user comprises the user set, the called user corresponding to the called user identifier comprises the user set, and the terminal devices corresponding to the at least two users are configured with the at least one group key identifier and the group key corresponding to each group key identifier;
and the terminal equipment receives the group call establishment response message sent by the service server.
In a feasible design, the temporary group number corresponds to at least two group key identifiers, and accordingly, the number of the group keys is at least two, the group call establishment request further carries a target group key identifier, the target group key identifier is used for indicating a target group key, and the target group key is included in the at least two group keys.
In a second aspect, an embodiment of the present invention provides a method for initiating a temporary group call, including:
a service server receives a group call establishment request sent by terminal equipment of a calling user, wherein the group call establishment request carries a temporary group number and a called user identifier, the temporary group number corresponds to at least one group key identifier, each group key identifier in the at least one group key identifier corresponds to a group key respectively, the temporary group number also corresponds to a user set, the user set comprises at least two users, the calling user comprises the user set, the called user corresponding to the called user identifier comprises the user set, and the terminal equipment corresponding to the at least two users is configured with the at least one group key identifier and the group key corresponding to each group key identifier;
the business server initiates a group calling establishment process to the terminal equipment of the called user;
and the service server sends a group call establishment response message to the terminal equipment of the calling user.
In a possible design, before the service server initiates a group call setup procedure to the terminal device of the called user, the method further includes:
and the service server judges whether the called user corresponding to the called user identification belongs to the user set.
In one possible design, the method further includes: and if the called user belongs to the user set, the service server associates the session identifier with the called user identifier.
In a feasible design, the temporary group number corresponds to at least two group key identifiers, and accordingly, the number of the group keys is at least two, the group call establishment request further carries a target group key identifier, the target group key identifier is used for indicating a target group key, and the target group key is included in the at least two group keys.
In a third aspect, an embodiment of the present invention provides a group key configuration method, including:
the group management server determines a user set corresponding to a temporary group number, wherein the user set comprises at least two users, the temporary group number also corresponds to at least one group key identifier, and each group key identifier in the at least one group key identifier corresponds to a group key respectively;
and the group management server sends the temporary group number, at least one group key identifier corresponding to the temporary group number and a group key corresponding to each group key identifier in the at least one group key identifier to the terminal equipment corresponding to each user in the user set.
In one possible design, the method further includes: and the group management server sends the temporary group number and the identification of each user in the user set corresponding to the temporary group number to a service server.
In a fourth aspect, an embodiment of the present invention provides an initiating device for a temporary group call, where the initiating device for the temporary group call is arranged on a terminal device of a calling party, and the device includes:
a sending unit, configured to send a group call establishment request to a service server, where the group call establishment request carries a temporary group number and a called subscriber identity, the temporary group number corresponds to at least one group key identity, each group key identity in the at least one group key identity corresponds to a group key, the temporary group number also corresponds to a subscriber set, the subscriber set includes at least two subscribers, a calling subscriber is included in the subscriber set, a called subscriber corresponding to the called subscriber identity is included in the subscriber set, and at least one group key identity and a group key corresponding to each group key identity are configured on terminal devices corresponding to the at least two subscribers, respectively;
and the receiving unit is used for receiving the group call establishment response message sent by the service server.
In a feasible design, the temporary group number corresponds to at least two group key identifiers, and accordingly, the number of the group keys is at least two, the group call establishment request further carries a target group key identifier, the target group key identifier is used for indicating a target group key, and the target group key is included in the at least two group keys.
In a fifth aspect, an embodiment of the present invention provides an initiating device for a temporary group call, including:
a receiving and sending unit, configured to receive a group call establishment request sent by a terminal device of a calling subscriber, where the group call establishment request carries a temporary group number and a called subscriber identity, the temporary group number corresponds to at least one group key identity, each group key identity in the at least one group key identity corresponds to a group key, the temporary group number also corresponds to a subscriber set, the subscriber set includes at least two subscribers, the calling subscriber includes the subscriber set, the called subscriber corresponding to the called subscriber identity includes the subscriber set, and the terminal devices corresponding to the at least two subscribers are configured with the at least one group key identity and the group key corresponding to each group key identity;
the receiving and sending unit is further configured to initiate a group call setup process to the terminal device of the called subscriber, and send a group call setup response message to the terminal device of the calling subscriber.
In one possible design, the apparatus further comprises: and the processing unit is used for judging whether the called user corresponding to the called user identifier belongs to the user set or not before the receiving and sending unit initiates a group call establishment process to the terminal equipment of the called user.
In a possible design, the processing unit is further configured to associate a session identifier with the called subscriber identifier if the called subscriber belongs to the subscriber set.
In a feasible design, the temporary group number corresponds to at least two group key identifiers, and accordingly, the number of the group keys is at least two, the group call establishment request further carries a target group key identifier, the target group key identifier is used for indicating a target group key, and the target group key is included in the at least two group keys.
In a sixth aspect, an embodiment of the present invention provides a group key distribution apparatus, including:
the processing unit is used for determining a user set corresponding to a temporary group number, wherein the user set comprises at least two users, the temporary group number also corresponds to at least one group key identifier, and each group key identifier in the at least one group key identifier corresponds to one group key respectively;
a sending unit, configured to send the temporary group number, at least one group key identifier corresponding to the temporary group number, and a group key corresponding to each group key identifier in the at least one group key identifier to a terminal device corresponding to each user in the user set.
In a feasible design, the sending unit is further configured to send the temporary group number and an identifier of each user in the user set corresponding to the temporary group number to a service server.
In a seventh aspect, an embodiment of the present invention provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and the processor, when executing the program, implements the method according to the first aspect or the various possible implementations of the first aspect.
In an eighth aspect, an embodiment of the present invention provides a service server, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the method according to the second aspect or various possible implementations of the second aspect is implemented.
In a ninth aspect, an embodiment of the present invention provides a group management server, including a processor, a memory, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the method according to the third aspect or various possible implementations of the third aspect.
In a tenth aspect, an embodiment of the present invention provides a storage medium, where instructions are stored, and when the instructions are executed on a terminal device, the terminal device is caused to perform the method according to the first aspect or various possible implementations of the first aspect.
In an eleventh aspect, embodiments of the present invention provide a storage medium, which stores instructions that, when executed on a service server, cause the service server to perform the method according to the second aspect or various possible implementations of the second aspect.
In a twelfth aspect, embodiments of the present invention provide a storage medium having stored therein instructions that, when run on a group management server, cause the group management server to perform a method as described in the third aspect or in various possible implementations of the third aspect.
In a thirteenth aspect, an embodiment of the present invention provides a computer program product, which, when run on a terminal device, causes the terminal device to perform the method according to the first aspect or the various possible implementations of the first aspect.
In a fourteenth aspect, an embodiment of the present invention provides a computer program product, which, when running on a service server, causes the service server to execute the method according to the second aspect or the various possible implementations of the second aspect.
In a fifteenth aspect, embodiments of the present invention provide a computer program product, which, when run on a group management server, causes the group management server to perform the methods described in the third aspect or in the various possible implementations of the third aspect.
The method, the device and the storage medium for initiating the temporary group call provided by the embodiment of the application allocate the temporary group number to the temporary group in advance, and allocate the group key identification corresponding to the temporary group number to the user in the temporary group. Then, the terminal equipment of the calling user sends a group call establishment request carrying a temporary group number and a called user identifier to the service server, the service server receives the group call establishment request, initiates a group call establishment flow to the terminal equipment of the called user corresponding to the called user identifier to establish a temporary group, and sends a group call establishment response message to the terminal equipment of the calling user, so that the calling user and the called user in the temporary group can encrypt data by using a group key after the temporary group is successfully established, and the purpose of ensuring data security is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a network architecture to which the method for initiating a temporary group call is applicable;
fig. 2 is a flowchart of an initiating method of a temporary group call according to an embodiment of the present invention;
fig. 3 is a flowchart of a group key configuration method according to an embodiment of the present invention;
fig. 4 is a flowchart of another method for initiating a temporary group call according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an initiating device of a temporary group call according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an initiating device of another temporary group call according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a group key distribution apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an initiating device of another temporary group call according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another group key distribution device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
In the existing trunking system scheme, a trunking group call is initiated on the premise that the group number of the group needs to exist, and a dispatching station selects the group number of the group and presses a push-to-talk (PTT) key to trigger trunking group call service; or, the calling user selects the group number of the group through the client on the terminal device and presses the PTT key to trigger the group call service, where the calling user is also called an authorized user. Several cluster group calling models are defined in 3GPP, but in some emergency and disaster scenarios, such as airplane crash, fire, landslide, earthquake, etc., a dispatcher of a crisis processing center wants to temporarily initiate a call to one or more groups, terminal devices of called users corresponding to one or more posts, etc. For example, calling party a needs to be quickly addressed to called party B, C, D. At this time, the calling user a sends a group call establishment request carrying the temporary group identifier and the identifiers of the called users to the MCPTT server. After receiving the group call establishment request, the MCPTT server determines the group call establishment request to be used for requesting to establish a temporary group according to the temporary group identification. The MCPTT server then assigns a temporary group number and automatically associates the temporary group members with the temporary group number, thereby establishing a temporary group.
In the process of initiating the temporary group call, no technical scheme of group key distribution is involved, so that each called user in a group cannot encrypt data, and the data security cannot be guaranteed. Therefore, how to initiate a temporary group call to ensure data security is a problem to be urgently solved in the industry.
In addition to the MCPTT service, services such as mission critical Video (MCVideo) and mission critical data (MCData) have the same problem.
In view of this, an embodiment of the present application provides a method for initiating a temporary group call, where a temporary group number is pre-allocated to a temporary group, a group key corresponding to the temporary group number is allocated to a user in the temporary group, and then the temporary group call is initiated according to the temporary group number, so as to ensure that each user in the temporary group is allocated with the group key, thereby ensuring data security.
Fig. 1 is a schematic diagram of a network architecture to which the method for initiating a temporary group call is applicable. Referring to fig. 1, the network architecture includes: the system comprises a service server, a group management server and at least one terminal device. The service server may be an MCPTT server, a mission critical Video server (MCVideo server), a mission critical data server (MCData server), and the like, each terminal device is installed with a Client (Client), each Client corresponds to one user, the Client includes a service Client, such as an MCPTT Client, an MCVideo Client, an MCData Client, and the like, and the service Client supports receiving a group call request, sending a group call response, and the like. In addition, the Client further includes a Group Management Client (Group Management Client), and the Group Management Client supports receiving configuration information such as a temporary Group number, a user list, a Group key or a Group key identifier and the like sent by the Group Management server. In the following embodiments, a client is provided on one terminal device, which is an example of one terminal device corresponding to one user.
In the embodiment of the invention, each terminal device establishes network connection with a service server and establishes network connection with a group management server; and the service server establishes network connection with the group management server.
In the embodiment of the present invention, a group management server (group management server) pre-allocates a plurality of temporary group numbers, each of the temporary group numbers is different from each other, each of the temporary group numbers corresponds to a user set, each of the temporary group numbers further corresponds to at least one group key identifier, and each of the group key identifiers corresponds to a group key. After the temporary group number is distributed, the group management server sends the temporary group number, at least one group key identifier corresponding to the temporary group number, and a group key corresponding to each group key identifier in the at least one group key identifier to the terminal equipment corresponding to each user in the user set, so that the temporary group number, the group key identifier, the group key and the corresponding relation thereof are stored in each terminal equipment. In addition, the group management server also sends the temporary group number and the identification of each user in the user set corresponding to the temporary group number to the service server, so that the service server stores the temporary group number, the identification of the user and the corresponding relation of the identification. For example, the user corresponding to the temporary group number 1 includes A, B, C, D, E, F, H, I, and the temporary group number 1 corresponds to the group Key identifier Key1, then the group management server sends the temporary group number 1, the group Key identifier Key1, and the group Key corresponding to the group Key identifier Key1 to the terminal device corresponding to each of the users A, B, C, D, E, F, H, I, and sends the identifiers of the user A, B, C, D, E, F, H, I corresponding to the temporary group number 1 and the temporary group number 1 to the service server.
When a temporary group needs to be established, a calling user sends a group call establishment request carrying a temporary group number and a called user identifier to a service server through terminal equipment of the calling user, wherein the calling user and the called user are both users in a user set corresponding to the temporary group number, and the service server initiates a group call establishment process to the terminal equipment corresponding to the called user identifier. Because the group key identification and the corresponding group key are configured in advance on the terminal equipment of the calling user and the terminal equipment of the called user, each terminal equipment can encrypt data by using the group key, thereby ensuring the data security.
It should be noted that, in the embodiment of the present application, the calling user and the called user are opposite, for example, in one scenario, user a is the calling user, and in another scenario, user a is the called user.
Next, a method for initiating a temporary group call according to an embodiment of the present invention is described in detail based on the architecture shown in fig. 1. In particular, see fig. 2.
Fig. 2 is a flowchart of an initiating method of a temporary group call according to an embodiment of the present invention. The present embodiment describes the initiating method of the temporary group call in detail from the perspective of interaction between the terminal device of the calling party and the service server. The embodiment comprises the following steps:
101. the terminal equipment sends a group call establishment request to the service server, wherein the group call establishment request carries a temporary group number and a called user identifier.
Correspondingly, the service server receives the group call establishment request carrying the temporary group identifier and the called user identifier.
The terminal device is a terminal device of a calling user, the temporary group number corresponds to at least one group key identifier, each group key identifier in the at least one group key identifier corresponds to a group key, the temporary group number also corresponds to a user set, the user set comprises at least two users, the calling user is contained in the user set, a called user corresponding to the called user identifier is contained in the user set, and the at least one group key identifier and the group key corresponding to each group key identifier are configured on the terminal device corresponding to the at least two users respectively.
In this step, when a temporary group needs to be established, the calling subscriber sends a group call establishment request to the service server through a client on the terminal equipment of the calling subscriber, the Group call setup request carries a temporary Group number, also called a critical Service Group identity (MS Service Group ID), and a called subscriber identity, for example, for the MCPTT service, the temporary Group number is called the MCPTT Group ID, for the MCVideo service, the temporary Group number is called MCVideo Group ID, for MCData traffic, the temporary Group number is called MCData Group ID.. in addition, the called user corresponding to the calling user and the called user identification belongs to the user set corresponding to the temporary group number, and the called user can be all users or part of users except the calling user in the user set.
102. And the service server initiates a group calling establishment process to the terminal equipment of the called user.
In this step, the service server initiates a group call establishment procedure to the terminal equipment of the called user corresponding to the called user identifier carried in the group call establishment request to establish a temporary group.
104. And the service server sends a group call establishment response message to the terminal equipment of the calling subscriber.
Correspondingly, the terminal equipment of the calling subscriber receives the group call establishment response message. The group call establishment response message is used for indicating whether the temporary group is successfully established or not to the calling user, if the temporary group is successfully established, the calling user sends a group message to the terminal equipment of each called user or receives a message sent by the terminal equipment of the called user through the terminal equipment of the calling user; if the temporary group is not successfully established, the calling user initiates a group call establishment request again, and the like.
The method for initiating a temporary group call provided in this embodiment allocates a temporary group number to a temporary group in advance, and allocates a group key identifier corresponding to the temporary group number to a user in the temporary group. Then, the terminal equipment of the calling user sends a group call establishment request carrying a temporary group number and a called user identifier to the service server, the service server receives the group call establishment request, initiates a group call establishment flow to the terminal equipment of the called user corresponding to the called user identifier to establish a temporary group, and sends a group call establishment response message to the terminal equipment of the calling user, so that the calling user and the called user in the temporary group can encrypt data by using a group key after the temporary group is successfully established, and the purpose of ensuring data security is realized.
In a feasible implementation manner, before the service server initiates a group call setup process to the terminal device of the called user, it is further determined whether the called user corresponding to the called user identifier belongs to the user set.
Illustratively, the service server avoids that the called subscriber does not belong to the subscriber set corresponding to the same temporary group number by judging whether the called subscriber corresponding to the called subscriber identity belongs to the subscriber set corresponding to the temporary group number.
In a possible implementation manner, if the called user belongs to the user set, the service server associates a session identifier and the called user identifier.
Illustratively, after receiving the group call establishment request, the service server generates a session identifier (sessionID), and if the service server determines that the called subscribers corresponding to the called subscriber identifiers belong to the subscriber set corresponding to the same temporary group number, the service server associates the session identifier and the called subscriber identifiers.
In a feasible implementation manner, the temporary group number corresponds to at least two group key identifiers, and correspondingly, the number of the group keys is at least two, the group call establishment request further carries a target group key identifier, the target group key identifier is used for indicating a target group key, and the target group key is included in the at least two group keys.
For example, when a temporary group number corresponds to only one group key identifier, the terminal device of each user in the user set corresponding to the temporary group number is configured with one group key, and only one group key can be used for encryption. However, when one temporary group number corresponds to at least two group keys, at least two group keys are configured on the terminal device of each user in the user set corresponding to the temporary group number. In order to avoid that the terminal equipment cannot determine which group key to use after the temporary group establishment is successful, when the terminal equipment of the calling user initiates a group call establishment request, the target group key identifier is also carried in the group call establishment request. And then, when the service server initiates a group call establishment request to the terminal equipment of the called user corresponding to each called user identifier, the target group key identifier is carried in the group call establishment request and is sent to the terminal equipment of the called user, so that the terminal equipment of the called user determines a target group key from at least two group keys according to the target group key identifier.
Fig. 3 is a flowchart of a group key configuration method according to an embodiment of the present invention. The present embodiment describes the initiating method of the temporary group call in detail from the perspective of the group management server. The embodiment comprises the following steps:
201. and the group management server determines a user set corresponding to the temporary group number.
The user set comprises at least two users, the temporary group number further corresponds to at least one group key identifier, and each group key identifier in the at least one group key identifier corresponds to one group key respectively.
In this step, the group management server pre-configures a user set corresponding to the temporary group number and the temporary group number, a group key identifier corresponding to the temporary group number and a corresponding relationship of the group key. The number of the temporary group numbers may be plural, and the temporary group numbers are different from each other. The users in the user set corresponding to different temporary group numbers may be completely or partially different. For example, the user set corresponding to the temporary group number 2 includes the user B, C, D, the user set corresponding to the temporary group number 3 includes the user E, F, and the user set corresponding to the temporary group number 4 includes the user C, F, H.
202. And the group management server sends the temporary group number, at least one group key identifier corresponding to the temporary group number and a group key corresponding to each group key identifier in the at least one group key identifier to the terminal equipment corresponding to each user in the user set.
In this step, the group management server sends the temporary group number, the at least one group key identifier corresponding to the temporary group number, and the group key corresponding to each group key identifier in the at least one group key identifier to the terminal device corresponding to each user included in the temporary group number, so that each terminal device stores the temporary group number, the group key identifier, the group key, and the corresponding relationship thereof.
In the group key configuration method provided in this embodiment, the group management server allocates the user set corresponding to the temporary group number, the group key corresponding to the temporary group number and the at least one group key identifier corresponding to each group key identifier, and sends the temporary group number, the at least one group key identifier corresponding to the temporary group number, and the group key corresponding to each group key identifier in the at least one group key identifier to the terminal device of each user, so that each terminal device stores the temporary group number, the group key identifier, the group key, and the corresponding relationship thereof. Therefore, in the temporary group which is established by the group call establishment request and carries the temporary group number and the called user identifier, and is sent to the service server by the terminal equipment of the calling user according to the temporary group number, because the group key identifiers and the corresponding group keys are configured on the terminal equipment of the calling user and the terminal equipment of the called user, the terminal equipment of the calling user and the terminal equipment of the called user can encrypt data by using the group keys, and the data security is ensured.
Referring to fig. 3 again, in the above embodiment, the above embodiment further includes:
203. the group management server also sends the temporary group number and the identification of each user in the user set corresponding to the temporary group number to the service server, so that the service server stores the temporary group number, the identification of the user and the corresponding relation of the temporary group number and the identification.
It should be noted that the above step 202 and step 203 are not in strict sequence.
Fig. 4 is a flowchart of another method for initiating a temporary group call according to an embodiment of the present invention. In this example, the user set allocated by the group management server for the temporary group number 5 includes a user a, a user B, and a user C, the group Key corresponding to the temporary group number 5 is Key2, the calling user is the user a, and the terminal device of the calling user a sends a group call establishment request carrying the temporary group number 5, the called user B, and the called user C to the service server, so as to establish a temporary group including the calling user a, the called user B, and the called user C. The embodiment comprises the following steps:
301. the terminal equipment of the calling user A sends a group call establishment request carrying the temporary group number 5, the called user identification B and the called user identification C to the service server.
302. The service server judges whether the called user B and the called user C belong to a user set corresponding to the temporary group number 5, if the user set corresponding to the temporary group number 5 comprises the called user B and the called user C, the step 303 is executed; if the subscriber set corresponding to the temporary group number 5 does not include the called subscriber B and/or the called subscriber C, step 303 is executed.
303. The service server generates a session identifier.
In this step, the service server generates a session identifier of the group call establishment request.
304. And the service server associates the session identifier, the called subscriber identifier B and the called subscriber identifier C.
305. The service server initiates a group call establishment process to the terminal equipment of the called user B.
The method comprises the following steps:
305a, the service server initiates a group call establishment request carrying a temporary group number 5 to the terminal equipment of the called user B;
305B, the terminal equipment of the called user B informs of the temporary packet call.
In this step, the terminal device of the called user B notifies a temporary packet call (notify temporal group call).
305c, the terminal equipment of the called user B sends a group call establishment response to the service server.
In this step, the terminal device of the called user B sends a group call response (group call response) to the service server.
306. And the service server initiates a group calling establishment flow to the terminal equipment of the called user C.
The method comprises the following steps:
306a, the service server initiates a group call establishment request carrying a temporary group number 5 to the terminal equipment of the called user C;
306b, the terminal equipment of the called subscriber C informs of the temporary packet call.
In this step, the terminal device of the called subscriber C notifies a temporary packet call (notify temporal group call).
306C, the terminal equipment of the called user C sends a group call establishment response to the service server.
In this step, the terminal device of the called user C sends a group call response (group call response) to the service server.
307. And the service server sends a group call establishment response to the terminal equipment of the calling subscriber A.
In this step, the service server sends a group call setup response (group call response) to the terminal device of the calling subscriber a.
308. And the terminal equipment of the calling user A, the terminal equipment of the called user B and the terminal equipment of the called user C carry out group calling.
309. And the service server sends a group establishment failure response message to the terminal equipment of the calling subscriber.
It should be further noted that, in this embodiment, if the group management server allocates at least two group key identifiers for the temporary group number 5, in step 301, the group call setup request further carries a target group key identifier.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.
Fig. 5 is a schematic structural diagram of an initiating device of a temporary group call according to an embodiment of the present invention, where the initiating device of the temporary group call may be implemented in a software and/or hardware manner, and the initiating device of the temporary group call is disposed on a terminal device of a calling party. As shown in fig. 5, the initiating device 100 of the temporary group call includes:
a sending unit 11, configured to send a group call establishment request to a service server, where the group call establishment request carries a temporary group number and a called subscriber identity, the temporary group number corresponds to at least one group key identity, each group key identity in the at least one group key identity corresponds to a group key, the temporary group number also corresponds to a subscriber set, the subscriber set includes at least two subscribers, the calling subscriber includes the subscriber set, the called subscriber corresponding to the called subscriber identity includes the subscriber set, and the at least one group key identity and the group key corresponding to each group key identity are configured on terminal devices corresponding to the at least two subscribers, respectively;
a receiving unit 12, configured to receive a group call setup response message sent by the service server.
In a feasible design, the temporary group number corresponds to at least two group key identifiers, and accordingly, the number of the group keys is at least two, the group call establishment request further carries a target group key identifier, the target group key identifier is used for indicating a target group key, and the target group key is included in the at least two group keys.
The initiating device of the temporary group call provided in the embodiment of the present invention can execute the actions of the terminal device of the calling party in the above embodiments, and the implementation principle and technical effect are similar, and are not described herein again.
Fig. 6 is a schematic structural diagram of another initiating device for a temporary group call according to an embodiment of the present invention, where the initiating device for a temporary group call may be implemented in a software and/or hardware manner. As shown in fig. 6, the initiating device 200 of the temporary group call includes:
a transceiving unit 21, configured to receive a group call setup request sent by a terminal device of a calling subscriber, where the group call setup request carries a temporary group number and a called subscriber identity, the temporary group number corresponds to at least one group key identifier, each group key identifier in the at least one group key identifier corresponds to a group key, the temporary group number also corresponds to a user set, the user set comprises at least two users, the calling subscriber is contained in the subscriber set, the called subscriber corresponding to the called subscriber identification is contained in the subscriber set, the at least two users are configured with the at least one group key identifier and the group key corresponding to each group key identifier on the terminal devices respectively corresponding to the at least two users, and initiate a group call establishment process to the terminal device of the called user and send a group call establishment response message to the terminal device of the calling user.
In a possible design, the apparatus 200 further includes:
a processing unit 22, configured to determine whether the called subscriber corresponding to the called subscriber identifier belongs to the subscriber set before the transceiver unit initiates a group call setup process to the terminal device of the called subscriber.
In a possible design, the processing unit 22 is further configured to associate the session identifier and the called subscriber identifier if the called subscriber belongs to the subscriber set.
In a feasible design, the temporary group number corresponds to at least two group key identifiers, and accordingly, the number of the group keys is at least two, the group call establishment request further carries a target group key identifier, the target group key identifier is used for indicating a target group key, and the target group key is included in the at least two group keys.
The device for initiating temporary group call provided in the embodiment of the present invention can execute the actions of the MCPTT server in the above embodiments, and the implementation principle and technical effect are similar, and are not described herein again.
Fig. 7 is a schematic structural diagram of a group key distribution device according to an embodiment of the present invention, where the group key distribution device may be implemented by software and/or hardware. As shown in fig. 7, the group key distribution device 300 includes:
a processing unit 31, configured to determine a user set corresponding to a temporary group number, where the user set includes at least two users, the temporary group number further corresponds to at least one group key identifier, and each group key identifier in the at least one group key identifier corresponds to one group key respectively;
a sending unit 32, configured to send the temporary group number, at least one group key identifier corresponding to the temporary group number, and a group key corresponding to each group key identifier in the at least one group key identifier to a terminal device corresponding to each user in the user set.
In a feasible design, the sending unit 32 is further configured to send the temporary group number and an identifier of each user in the user set corresponding to the temporary group number to a service server.
The group key distribution device provided in the embodiment of the present invention can execute the actions of the group management server in the above embodiments, and the implementation principle and technical effect are similar, and are not described herein again.
Fig. 8 is a schematic structural diagram of an initiating device of another temporary group call according to an embodiment of the present invention. As shown in fig. 8, the initiating device 400 of the temporary group call includes:
at least one processor 41 and memory 42;
the memory 42 stores computer-executable instructions;
the at least one processor 41 executes the computer-executable instructions stored in the memory 42, so that the at least one processor 41 executes the method for initiating the temporary group call corresponding to the terminal device, the service server or the group management server of the calling party.
For a specific implementation process of the processor 41, reference may be made to the above method embodiments, which implement similar principles and technical effects, and this embodiment is not described herein again.
Optionally, the initiating device 400 of the temporary group call further includes a communication component 43. The processor 41, the memory 42, and the communication unit 43 may be connected by a bus 44.
The embodiment of the invention also provides a storage medium, wherein the storage medium stores a computer execution instruction, and the computer execution instruction is used for realizing the method for initiating the temporary group call applied to the terminal equipment and the service server of the calling party when being executed by the processor.
The embodiment of the present invention further provides a computer program product, which, when running on a terminal device, a service server or a group management server of a calling party, enables the terminal device and the service server of the calling party to execute the method for initiating a temporary group call.
Fig. 9 is a schematic structural diagram of another group key distribution device according to an embodiment of the present invention. As shown in fig. 9, the group key distribution apparatus 500 includes:
at least one processor 51 and memory 52;
the memory 52 stores computer-executable instructions;
the at least one processor 51 executes the computer-executable instructions stored by the memory 52, causing the at least one processor 51 to perform the group key assignment method as applied to the group management server above.
For a specific implementation process of the processor 51, reference may be made to the above method embodiments, which have similar implementation principles and technical effects, and details of this embodiment are not described herein again.
Optionally, the initiating device 500 of the temporary group call further includes a communication component 53. The processor 51, the memory 52, and the communication section 53 may be connected by a bus 54.
An embodiment of the present invention further provides a storage medium, where a computer executing instruction is stored in the storage medium, and the computer executing instruction is used to implement the group key distribution method applied to the group management server when being executed by the processor.
Embodiments of the present invention further provide a computer program product, which, when running on a group management server, causes the group management server to execute the group key distribution method.
In the above embodiments, it should be understood that the described apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules 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.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions to enable an electronic device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the method according to various embodiments of the present invention.
It should be understood that the processor may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present invention are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in a terminal or server.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. A method for initiating a temporary group call, comprising:
a terminal device sends a group call establishment request to a service server, wherein the group call establishment request carries a temporary group number and a called user identifier, the terminal device is a terminal device of a calling user, the temporary group number corresponds to at least one group key identifier, each group key identifier in the at least one group key identifier corresponds to a group key, the temporary group number also corresponds to a user set, the user set comprises at least two users, the calling user comprises the user set, the called user corresponding to the called user identifier comprises the user set, and the terminal devices corresponding to the at least two users are configured with the at least one group key identifier and the group key corresponding to each group key identifier;
and the terminal equipment receives the group call establishment response message sent by the service server.
2. The method of claim 1, wherein the temporary group number corresponds to at least two group key identifiers, and correspondingly, the group keys are at least two, and the group call setup request further carries a target group key identifier, and the target group key identifier is used to indicate a target group key, and the target group key is included in the at least two group keys.
3. A method for initiating a temporary group call, comprising:
a service server receives a group call establishment request sent by terminal equipment of a calling user, wherein the group call establishment request carries a temporary group number and a called user identifier, the temporary group number corresponds to at least one group key identifier, each group key identifier in the at least one group key identifier corresponds to a group key respectively, the temporary group number also corresponds to a user set, the user set comprises at least two users, the calling user comprises the user set, the called user corresponding to the called user identifier comprises the user set, and the terminal equipment corresponding to the at least two users is configured with the at least one group key identifier and the group key corresponding to each group key identifier;
the business server initiates a group calling establishment process to the terminal equipment of the called user;
and the service server sends a group call establishment response message to the terminal equipment of the calling user.
4. The method according to claim 3, wherein before the service server initiates the group call setup procedure to the terminal device of the called user, the method further comprises:
and the service server judges whether the called user corresponding to the called user identification belongs to the user set.
5. The method of claim 4, further comprising:
and if the called user belongs to the user set, the service server associates the session identifier with the called user identifier.
6. The method according to any of claims 3 to 5, wherein the temporary group number corresponds to at least two group key identifiers, and correspondingly, the group keys are at least two, and the group call setup request further carries a target group key identifier, and the target group key identifier is used to indicate a target group key, and the target group key is included in the at least two group keys.
7. An initiating device of a temporary group call, wherein the initiating device of the temporary group call is arranged on a terminal device of a calling user, the device comprises:
a sending unit, configured to send a group call establishment request to a service server, where the group call establishment request carries a temporary group number and a called subscriber identity, the temporary group number corresponds to at least one group key identity, each group key identity in the at least one group key identity corresponds to a group key, the temporary group number also corresponds to a subscriber set, the subscriber set includes at least two subscribers, a calling subscriber is included in the subscriber set, a called subscriber corresponding to the called subscriber identity is included in the subscriber set, and at least one group key identity and a group key corresponding to each group key identity are configured on terminal devices corresponding to the at least two subscribers, respectively;
and the receiving unit is used for receiving the group call establishment response message sent by the service server.
8. The apparatus of claim 7, wherein the temporary group number corresponds to at least two group key identifiers, and correspondingly, the group keys are at least two, and the group call setup request further carries a target group key identifier, and the target group key identifier is used to indicate a target group key, and the target group key is included in the at least two group keys.
9. An initiating device of a temporary group call, comprising:
a receiving and sending unit, configured to receive a group call establishment request sent by a terminal device of a calling subscriber, where the group call establishment request carries a temporary group number and a called subscriber identity, the temporary group number corresponds to at least one group key identity, each group key identity in the at least one group key identity corresponds to a group key, the temporary group number also corresponds to a subscriber set, the subscriber set includes at least two subscribers, the calling subscriber includes the subscriber set, the called subscriber corresponding to the called subscriber identity includes the subscriber set, and the terminal devices corresponding to the at least two subscribers are configured with the at least one group key identity and the group key corresponding to each group key identity;
the receiving and sending unit is further configured to initiate a group call setup process to the terminal device of the called subscriber, and send a group call setup response message to the terminal device of the calling subscriber.
10. The apparatus of claim 9, further comprising:
and the processing unit is used for judging whether the called user corresponding to the called user identifier belongs to the user set or not before the receiving and sending unit initiates a group call establishment process to the terminal equipment of the called user.
11. The apparatus of claim 10,
the processing unit is further configured to associate the session identifier with the called subscriber identifier if the called subscriber belongs to the subscriber set.
12. The apparatus according to any of claims 9 to 11, wherein the temporary group number corresponds to at least two group key identifiers, and correspondingly, the group key identifiers are at least two, and the group call setup request further carries a target group key identifier, and the target group key identifier is used to indicate a target group key, and the target group key is included in the at least two group keys.
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| CN115334504A (en) * | 2021-05-10 | 2022-11-11 | 大唐移动通信设备有限公司 | Key transmission method and device for temporary group, terminal and network side equipment |
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