Group meticulous monitoring method and system in LTE broadband cluster

Technical field of group careful monitoring method and system in LTE broadband cluster

[0001] The present invention belongs to the long term evolution (Long Term Evolution, LTE) technical field, and particularly relates to a method and system for careful group monitoring in an LTE broadband cluster.

Background technique

[0002] LTE is a long-term evolution of the Universal Mobile Telecommunications System (UMTS) technical standard formulated by the 3rd Generation Partnership Project (3GPP) organization.

[0003] A trunked communication system refers to a mobile communication system in which multiple users share a set of wireless channels and dynamically use these channels. The trunking communication system has won the praise of the market with its complete dispatch function and superior performance. However, as emerging applications such as cloud computing, the Internet of Things, and big data have profoundly changed business processes and production systems, the demand for "full control and on-site visibility" in the communication process in various industries has increased sharply. It's getting harder and harder to continue. In the narrowband trunking system, for point-to-point private calls, the dispatch system has the function of careful listening, that is, a user is designated for careful listening. When the user makes a point call, the listener (usually an authorized dispatcher) can monitor The user's call is not discovered by both parties.

[0004] With the help of LTE technology in public networks, trunking communications usher in broadband. The broadband digital trunking communication system is a dedicated mobile communication system that provides command and dispatch functions in the form of multimedia trunking services based on broadband mobile communication technology. It can realize the integrated scheduling capability with multiple business coordination such as voice scheduling, data scheduling, and video scheduling.

[0005] In a broadband trunking system, there are scenarios in which a group needs to be monitored. However, in the current broadband trunking system defined by the 3GPP protocol, the implementation of the careful monitoring function for the group is still blank, and the functional requirements and implementation methods for the group monitoring are not proposed.

Summary of the invention

[0006] Embodiments of the present invention provide a method and system for group careful monitoring in an LTE broadband cluster.

[0007] The technical solutions of the embodiments of the present invention are as follows:

[0008] A group careful monitoring method in an LTE broadband cluster includes:

[0009] The mission-critical service client sends a close monitoring activation request to the mission-critical service server, where the close monitoring activation request includes the identification of the group that needs close monitoring;

[0010] The mission critical service server returns to the mission critical service client a careful monitoring activation response corresponding to the critical monitoring activation request.

[0011] In one embodiment, wherein:

[0012] When the mission-critical service server determines that the mission-critical service client has no right to listen carefully, the mission-critical service server returns a response to the mission-critical service client that fails to activate careful monitoring;

[0013] When the mission-critical service server determines that the group requiring careful monitoring does not have the right to be monitored, the mission-critical service server returns a critical monitoring activation failure response to the mission-critical service client;

[0014] When the mission-critical service server determines that the mission-critical service client does not have the right to listen carefully, and

When the group that requires careful monitoring does not have the right to be carefully monitored, the mission-critical service server returns a critical monitoring activation failure response to the mission-critical service client;

[0015] When the mission-critical service server determines that the mission-critical service client has the right to listen carefully and the group that needs to be carefully monitored has the right to be carefully monitored, the mission-critical service server sends the mission-critical service client to the mission-critical service client. The terminal returns a successful response of careful monitoring and activation.

[0016] In one embodiment, before the mission-critical service client sends a critical monitoring activation request to the mission-critical service server, the group session of the group that requires careful monitoring is in an established state.

[0017] In one embodiment, when the close monitoring activation response is a close monitoring activation success response, the method further includes:

[0018] When the mission critical service server determines that the group session of the group that requires careful monitoring is in an established state, it sends a critical monitoring group call request to the critical monitoring group, and the careful monitoring group The group call request includes the identifier of the group that needs careful monitoring;

[0019] The mission critical service client returns a careful monitoring group call response corresponding to the critical monitoring group call request to the mission critical service server.

[0020] In one embodiment, when the close monitoring group call response is a close monitoring group call success response, the mission critical service server adds the mission critical service client to the group session.

[0021] In one embodiment, when the close monitoring activation response is a close monitoring activation success response and the group session of the group requiring close monitoring is not established, the method further includes:

[0022] Establishing a group session of the group that requires careful monitoring;

[0023] After waiting for the group session of the group that requires careful monitoring to be established, the mission critical service server sends a careful monitoring group call request to the mission critical service client, the careful monitoring group call request Contains the identification of the group that needs careful monitoring;

[0024] The mission critical service client returns a careful monitoring group call response corresponding to the critical monitoring group call request to the mission critical service server.

[0025] In one embodiment, when the close monitoring group call response is a close monitoring group call success response, the mission critical service server adds the mission critical service client to the group session.

[0026] In an embodiment, the method further includes:

[0027] The mission-critical service client sends a close monitoring deactivation request to the mission-critical service server, and the close monitoring deactivation request includes the identification of the group that needs to cancel the close monitoring;

[0028] The mission critical service server returns a careful monitoring deactivation response corresponding to the critical monitoring deactivation request to the mission critical service client.

[0029] In an embodiment, the method further includes:

[0030] When the close monitoring deactivation response is a close monitoring deactivation success response, the group session of the group that needs to cancel the close monitoring is in an established state and the mission-critical service client has joined the group During the session, the mission-critical service client is exited from the group session.

[0031] A group careful monitoring system in an LTE broadband cluster includes a mission-critical service client and a mission-critical service server, wherein:

[0032] The mission-critical service client is configured to send a close monitoring activation request to the mission-critical service server, where the close monitoring activation request includes the identification of the group that needs close monitoring;

[0033] The mission-critical service server is configured to return to the mission-critical service client a careful monitoring activation response corresponding to the critical monitoring activation request.

[0034] In one embodiment, the mission-critical service server is configured to return the mission-critical service client to the mission-critical service client when the mission-critical service server determines that the mission-critical service client has no right to listen carefully. Activation failure response; when the mission-critical service server determines that the group that requires careful monitoring does not have the right to be carefully monitored, it returns a critical monitoring activation failure response to the mission-critical service client; when the mission-critical service server When it is determined that the mission-critical service client does not have the right of careful monitoring and the group that needs to be carefully monitored does not have the right to be carefully monitored, return a critical monitoring activation failure response to the mission-critical service client; when the mission-critical service When the server determines that the mission-critical service client has the right of careful monitoring and the group that needs to be carefully monitored has the right to be monitored, the server returns a successful response of careful monitoring to the mission-critical service client.

[0035] In one embodiment, before the mission critical service client sends a critical monitoring activation request to the mission critical service server, the group session of the group that requires careful monitoring is in an established state.

[0036] In one embodiment, the mission critical service server is further configured to: when the close monitoring activation response is a close monitoring activation success response and determining that the group session of the group requiring close monitoring is in an established state Sending a careful monitoring group call request to the mission-critical service client, where the careful monitoring group call request includes the identifier of the group that needs careful monitoring;

[0037] The mission critical service client is further configured to return a careful monitoring group call response corresponding to the critical monitoring group call request to the mission critical service server.

[0038] In one embodiment, the mission critical service server is further configured to add the mission critical service client to the group when the close monitoring group call response is a close monitoring group call success response. Group conversation.

[0039] In one embodiment, the mission-critical service server is further configured to wait for the close monitoring activation response to be a close monitoring activation success response and the group session of the group requiring close monitoring has not been established. After the group session of the group that requires careful monitoring is established, a careful monitoring group call request is sent to the mission-critical service client, and the careful monitoring group call request includes the identification of the group requiring careful monitoring ;

[0040] The mission critical service client is further configured to return a careful monitoring group call response corresponding to the critical monitoring group call request to the mission critical service server.

[0041] In one embodiment, the mission-critical service server is further configured to add the mission-critical service client to the group when the response to the close monitoring group call is a successful response to the close monitoring group call Group conversation.

[0042] In one embodiment, the mission-critical service client is further configured to send a close monitoring deactivation request to the mission-critical service server, and the close monitoring deactivation request includes the identification of the group that needs to cancel the close monitoring ;

[0043] The mission-critical service server is further configured to return to the mission-critical service client a careful monitoring deactivation response corresponding to the critical monitoring deactivation request.

[0044] In one embodiment, the mission-critical service server is also used for when the close monitoring deactivation response is a close monitoring deactivation success response, and the group session of the group that needs to cancel the close monitoring is in an established state And when the mission critical service client has joined the group session, the mission critical service client is exited from the group session.

[0045] A computer-readable storage medium in which computer-readable instructions are stored, and the computer-readable instructions are used for

Perform the group careful monitoring method in the LTE broadband cluster as described in any of the above.

[0046] As can be seen from the above technical solution, in the embodiment of the present invention, the mission-critical service client sends a critical monitoring activation request to the critical mission service server, and the critical monitoring activation request contains the identification of the group that requires careful monitoring; The mission critical service server returns a careful monitoring activation response corresponding to the critical monitoring activation request to the critical mission service client. It can be seen that the implementation of the present invention realizes careful monitoring for a specific group in an LTE broadband cluster.

[0047] Moreover, the embodiment of the present invention implements rigorous monitoring authority control and processes in various business scenarios, and also implements time point control for joining and exiting monitoring.

Description of the drawings

[0048] FIG. 1 is a flowchart of a method for group careful monitoring in an LTE broadband cluster according to the present invention.

[0049] FIG. 2 is a flowchart of canceling group careful monitoring in an LTE broadband cluster according to the present invention.

[0050] FIG. 3 is a flowchart of a group monitoring command process in an unestablished state of a group session according to the present invention.

[0051] FIG. 4 is a schematic diagram of a group monitoring command process when a group session is in an unestablished state according to the present invention.

[0052] FIG. 5 is a flowchart of the group monitoring command process in the established state of the group session of the present invention. [0053] FIG. 6 is a schematic diagram of a group monitoring command process when a group session is in an established state according to the present invention.

[0054] FIG. 7 is a structural diagram of a group careful monitoring system in an LTE broadband cluster according to the present invention.

Detailed ways

[0055] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

[0056] In order to be concise and intuitive in description, the solution of the present invention is explained below by describing several representative embodiments. A large number of details in the embodiments are only used to help understand the solutions of the present invention. However, it is obvious that the implementation of the technical solution of the present invention may not be limited to these details. In order to avoid unnecessarily obscuring the solution of the present invention, some embodiments are not described in detail, but only a framework is given. Hereinafter, "including" means "including but not limited to" and "according to..." means at least according to..., but not limited to only according to...". Due to Chinese language habits, the number of an ingredient is not specified below When, it means that the component can be one or more, or can be understood as at least one. [0057] In the embodiments of the present invention, a function definition, process mechanism, and authorization mechanism based on group careful monitoring are proposed. [0058 ] Fig. 1 is a flowchart of a method for group careful monitoring in an LTE broadband cluster according to the present invention.

[0059] As shown in FIG. 1, the method includes:

[0060] Step 101: The mission critical (MC) service client (service client) sends a discreet listening activation request (Discreet listening activation request) to the mission critical service server (MC service server), and the discreet listening activation request includes The identification of the group that needs careful monitoring.

[0061] Step 102: The mission-critical service server returns to the mission-critical service client a discreet listening activation response (Discreet listening activation response) corresponding to the discreet listening activation request _o

[0062] Among them, the mission-critical service server determines whether the mission-critical service client that sent the close monitoring activation request has the monitoring authority and whether the group that needs close monitoring has the authority to be monitored, and if at least one of them does not have the authority, the mission-critical service The service client sends a failure response, which carries the specific reason in the result, otherwise it sends a monitoring success response.

[0063] Specifically:

[0064] (1) When the mission-critical service server determines that the mission-critical service client does not have the right to listen carefully, the mission-critical service server returns a response to the mission-critical service client that fails to activate careful monitoring.

[0065] (2) When the mission-critical service server determines that the group that needs to be closely monitored does not have the right to be carefully monitored, the mission-critical service server returns a response to the mission-critical service client that fails to activate the critical monitoring.

[0066] (3) When the mission-critical service server determines that the mission-critical service client does not have the right to listen carefully and the group that needs to be carefully monitored does not have the right to be carefully monitored, the mission-critical service server returns the critical monitoring to the mission-critical service client Activation failure response.

[0067] (4) When the mission-critical service server determines that the mission-critical service client has the right to listen carefully and the group that needs to be watched has the right to be carefully monitored, the mission-critical service server returns the right to listen carefully to the mission-critical service client Activate a successful response.

[0068] In a specific implementation, the original MC service ID in the prior art intensive monitoring activation request can be changed to optional, and an optional intensive monitoring group identifier (MC service group ID) may be added. The activation request is carefully monitored as an embodiment of the present invention. Preferably, an optional MC service group ID (MC service group ID) is also carried in the close monitoring activation response.

[0069] It can be seen that, based on the flow in FIG. 1, a command issuing process based on group careful monitoring can be implemented.

[0070] Moreover, the embodiment of the present invention also proposes a process of issuing a cancel command based on group careful monitoring.

[0071] FIG. 2 is a flowchart of canceling group careful monitoring in an LTE broadband cluster according to the present invention.

[0072] As shown in FIG. 2, the method includes:

[0073] Step 201: The mission-critical service client sends a discreet listening activation request to the mission-critical service server. The discreet listening activation request includes the identification of the group that needs to cancel the discreet listening.

[0074] Step 202: The mission-critical service server returns a discreet listening activation response corresponding to the discreet listening activation response to the mission-critical service client. _o

[0075] Here, when the mission-critical service server determines that the group that needs to cancel the intensive monitoring can successfully perform intensive monitoring and deactivation, it returns a deactivation success response to the mission-critical service client; when the mission-critical service server determines that the When the group that needs to cancel the close monitoring cannot successfully perform the close monitoring deactivation, the deactivation failure response is returned to the mission-critical service client.

[0076] Wherein, when the close monitoring deactivation response is a close monitoring deactivation success response, the group session of the group that needs to cancel the close monitoring is in an established state and the mission-critical service client has joined the group session of the group , The mission-critical service client is withdrawn (bye) the group session of the group that needs to cancel the careful monitoring.

[0077] In a specific implementation, the original MC service ID in the prior art intensive monitoring deactivation request can be changed to optional, and an optional identification of the group that needs to cancel the intensive monitoring (MC service ID) can be added. The group ID) is used as an embodiment of the present invention to carefully monitor the deactivation request. Preferably, the close monitoring deactivation response also carries an optional MC service group ID (MC service group ID) that needs to cancel the close monitoring.

[0078] Based on the processes of FIG. 1 and FIG. 2, the time point control of joining and exiting monitoring can be realized.

[0079] In one embodiment, before the mission-critical service client sends the critical monitoring activation request to the mission-critical service server, the group session of the group that needs careful monitoring is in an established state. Wherein, when the intensive monitoring activation response is the intensive monitoring activation success response, the method further includes: when the mission-critical service server determines that the group session of the group that needs intensive monitoring is in an established state, sending the intensive monitoring to the mission-critical service client Monitor group calls please

The request for careful monitoring of the group call includes the identification of the group that requires careful monitoring; the mission critical service client returns to the mission critical service server a careful monitoring group call response corresponding to the request for careful monitoring of the group call.

[0080] Preferably, when the close monitoring group call response is a close monitoring group call success response, the mission critical service server adds the mission critical service client to the group session. At this time, the mission-critical service client acts as a listener, and when it can obtain the call content and speaker information of the group, it can also perform local recording of the monitored content.

[0081] In one embodiment, when the close monitoring activation response is the close monitoring activation success response and the group session of the group requiring close monitoring has not been established, the method further includes: the mission-critical service server waits for the group requiring close monitoring After the group's group session is established, send a careful monitoring group call request to the mission-critical service client. The critical monitoring group call request contains the identification of the group that needs careful monitoring; the mission-critical service client sends the mission-critical service server to the mission-critical service server. Returning a close monitoring group call response corresponding to the close monitoring group call request.

[0082] Preferably, when the close monitoring group call response is a close monitoring group call success response, the mission critical service server adds the mission critical service client to the group session. At this time, the mission-critical service client acts as a listener, and when it can obtain the call content and speaker information of the group, it can also record the monitored content locally.

[0083] Based on the embodiments of the present invention, in the LTE broadband cluster cluster scheduling system, when the scheduling console or user terminal is implemented as the mission-critical service client of FIG. 1 and FIG. The group conducts careful monitoring. When the group is established and the speaker is switched, the dispatcher or user terminal as the monitor can obtain the conversation content and speaker information of the group, and the dispatcher or terminal as the monitor can also record the monitor content locally.

[0084] Moreover, the embodiment of the present invention also implements a complete authorization mechanism, including: monitors need to have the authority to monitor the group, and only authorized monitors can monitor the group; the monitored group needs to be monitored Permission, only authorized groups can be monitored, etc. In addition, in the embodiment of the present invention, close monitoring related commands include starting close monitoring and ending close monitoring; after close monitoring ends, the current session and subsequent sessions of the group cannot be monitored.

[0085] The embodiments of the present invention can be specifically implemented in a variety of application scenarios.

[0086] For example, the implementation of the present invention can be specifically implemented in an application scenario of Mission critical push-to-talk (MCPTT). MCPTT is an all-IP application layer service running on the LTE network. It uses an IMS domain-based implementation scheme, which combines many advantages such as large bandwidth, low latency, and ease of large-scale network construction. An enhanced PTT service provided by the MCPTT service is suitable for scenarios where key tasks are performed. It supports functions such as authentication, group attachment, group management, group calling, single calling, priority calling, voice control, and location reporting.

[0087] Moreover, the group careful monitoring service process of the embodiment of the present invention may have the following two commonly used scenarios:

[0088] (1) The group is not activated when the close monitoring starts (that is, the group session is in an unestablished state);

[0089] (2) The group has been activated when the careful monitoring starts (that is, the group session is in an established state).

[0090] Those skilled in the art may realize that the implementation of the implementation of the present invention in the MCPTT application scenario described in detail below is only an exemplary description, and is not used to limit the protection scope of the implementation of the present invention.

[0091] FIG. 3 is a flowchart of a group monitoring command process in which a group session is in an unestablished state according to the present invention. FIG. 4 is a schematic diagram of the group monitoring command process in the unestablished state of the group session of the present invention.

[0092] It can be seen from FIG. 4 that the main logical network elements of the system architecture include a dispatch console (Dispatch Console, DC), a user terminal (User Equipment, UE), and an MCPTT server (MCPTTServer). Among them, the dispatch console integrates a dispatch control interface, which can retrieve, download, and play back historical videos, and can also perform dispatch operations on the videos, such as distribution, and uploading to the wall. The user terminal is a wireless terminal device developed based on LTE, which can support high-resolution video playback. MCPTT server schedules for 3GPP

The server provides key cluster services. The MCPTT client (MCPTT Client) is a 3GPP trunking service client, which can be implemented as a dispatching station or a user terminal.

[0093] It can be seen from FIG. 4 that the group session of the group A including UE1 and UE2 is in an unestablished state before being carefully monitored. First of all, the dispatching station as the listener sends a careful monitoring command. Then, the group session of group A is established. Then, the dispatching station can monitor the group conversation of group A.

[0094] FIG. 3 depicts the implementation process of the group listening command when the group session is in an unestablished state. In Figure 3, the MCPTT client 3 is a listener (it can be a dispatcher or a user terminal). Before the group session of the group (for example, group A in Figure 4) is established, the MCPTT client 3 has submitted a monitoring request for the group to the MCPTT server in advance, and the MCPTT server returns a monitoring success message to the MCPTT client 3. . Then, the MCPTT client 1 (for example, UE1 in group A) establishes a group session of the group A, and the MCPTT server is responsible for establishing a group session with other group members (for example, UE2). The MCPTT server judges whether the group A has been monitored, and if it has been monitored, it establishes a group session with the listener MCPTT client 3, which is equivalent to the MCPTT server taking the MCPTT client 3 as a group member to join the group of group A Group conversation. Finally, the group session of the group A is successfully established, and the MCPTT client 3 can monitor the group session, including the ability to obtain the change of the speaker information.

[0095] As shown in FIG. 3, the method includes:

[0096] Step 301: The MCPTT client 3 as a listener (for example, the dispatching station in FIG. 4) sends a Discreet listening activation request to the MCPTT server, and the Discreet listening activation request contains information that needs to be carefully monitored. The identity of the group (for example, the identity of group A).

[0097] Step 302: The MCPTT server returns a discreet listening activation response corresponding to the discreet listening activation request to the MCPTT client 3 as a listener, and the discreet listening activation response carries the identification of the group that needs to be discreetly monitored . Among them, the MCPTT server determines whether the MCPTT client 3 that sent the close monitoring activation request has the monitoring permission and whether the group that needs close monitoring has the permission to be monitored. If at least one of them does not have the permission, it sends a failure response to the MCPTT client 3. Carry the specific reason in the result, otherwise send the monitoring success response. Steps 303 to 309 of the subsequent process describe the processing procedure after the MCPTT server sends a monitoring success response to the MCPTT client 3.

[0098] Step 303: MCPTT client 1 (for example, UE1 in group A) sends a group session request (Group call request) to the MCPTT server.

[0099] Step 304: The MCPTT server sends a group call request (Group call request) to the MCPTT client 2 (for example, the UE2 in the group A).

[0100] Step 305: When the MCPTT server determines that the group session of the group that needs careful monitoring is in an established state, it sends a careful monitoring group call request (Di screet l istening Group call request) to the MCPTT client 3. The careful monitoring The group call request contains the identity of the group that needs to be monitored closely (for example, the identity of group A).

[0101] Step 306: The MCPTT client 2 returns a group call response (Group call response) to the MCPTT server, indicating that the MCPTT client 2 can join the group session.

[0102] Step 307: The MCPTT client 3 returns a discreet listening group call response to the MCPTT server, and the discreet listening group call response also includes the identification of the group that needs to be discreetly monitored. It is assumed here that the call response of the close monitoring group is a successful response.

[0103] Step 308: The MCPTT server sends a group session response (Group call

response), indicating that the MCPTT client 1 can join the group session.

[0104] Step 309: Create a media plane. So far, the MCPTT client 3 has joined the group session as a listener, and can obtain the call content and the speaker information of the group, and can also record the monitored content locally.

[0105] FIG. 5 is a flowchart of the group monitoring command process in the established state of the group session of the present invention. FIG. 6 is a schematic diagram of the group monitoring command process in the established state of the group session of the present invention.

[0106] As can be seen from FIG. 6, the main logical network elements of the system architecture include a dispatch console (Dispatch Console, DC), a user terminal (User Equipment, UE), and an MCPTT server (MCPTTServer). Among them, the dispatch console integrates a dispatch control interface, which can retrieve, download, and replay historical videos, and can also perform dispatch operations on the videos, such as distribution, and wall posting. The user terminal is a wireless terminal device developed based on LTE, which can support high-resolution video playback. The MCPTT server is a 3GPP dispatch server that provides key trunking services. The MCPTT client (MCPTT Client) is a 3GPP trunking service client, which can be implemented as a dispatching station or a user terminal.

[0107] It can be seen from FIG. 6 that the group session of the group A including UE1 and UE2 is in an established state before careful monitoring. First, the group conversation of group A is in progress. Then, the dispatching station as the listener sends a careful monitoring command. Then, the dispatching station can monitor the group conversation of group A.

[0108] FIG. 6 describes the implementation process of the group monitoring command in the established state of the group session. In Fig. 6, MCPTT client 1 (either a dispatching station or a user terminal) establishes a group session. Then, the MCPTT server is responsible for establishing a group session with the MCPTT client 2 of other group members. During the session, the MCPTT client 3 as the listener successfully submits a request to monitor the group session to the MCPTT server, and the MCPTT server sends a monitoring success message to the MCPTT client 3. The MCPTT server needs to determine whether the group session has been established. If it has been established, establish the group session to the listener MCPTT client 3, which is equivalent to the MCPTT server adding the MCPTT client 3 as a group member to the group session. Finally, the MCPTT client 3 joins the group session, and the MCPTT client 3 can monitor the group session, including the ability to obtain the change of the speaker information.

[0109] As shown in FIG. 5, the method includes:

[0110] Step 501: MCPTT client 1 (for example, UE1 in group A) sends a group session request (Group call request) to the MCPTT server.

[0111] Step 502: The MCPTT server sends a group call request (Group call request) to the MCPTT client 2 (for example, the UE2 in the group A).

[0112] Step 503: The MCPTT client 2 returns a group call response (Group call response) to the MCPTT server, indicating that the MCPTT client 2 can join the group session.

[0113] Step 504: The MCPTT server returns a group call response (Group call response) to the MCPTT client 1, indicating that the MCPTT client 1 can join the group session.

[0114] Step 505: Establish a media plane. At this point, the group session has been established.

[0115] Step 506: The MCPTT client 3 as a listener (for example, the dispatching station in FIG. 4) sends a Discreet listening activation request to the MCPTT server, and the Discreet listening activation request contains information that requires careful monitoring. The identity of the group (for example, the identity of group A).

[0116] Step 507: The MCPTT server returns a discreet listening activation response corresponding to the discreet listening activation request to the MCPTT client 3 as the listener, and the discreet listening activation response carries the identification of the group that needs to be discreetly monitored . Among them, the MCPTT server determines whether the MCPTT client 3 that sent the close monitoring activation request has the monitoring authority and whether the group that needs close monitoring has the monitoring authority.

If at least one does not have permission, it sends a failure response to the MCPTT client 3, carrying the specific reason in the result, otherwise, it sends a monitoring success response. Steps 508 to 510 of the subsequent process describe the processing procedure after the MCPTT server sends a monitoring success response to the MCPTT client 3.

[0117] Step 508: When the MCPTT server determines that the group session of the group that needs to be closely monitored is in an established state, it sends a Discreet l istening Group call request to the MCPTT client 3. The group call request includes the identity of the group that needs to be monitored closely (for example, the identity of group A).

[0118] Step 509: The MCPTT client 3 returns a discreet listening group call response to the MCPTT server, and the discreet listening group call response also includes the identification of the group that needs to be discreetly monitored. It is assumed here that the call response of the close monitoring group is a successful response.

[0119] Step 510: Create a media plane. So far, the MCPTT client 3 has joined the group session as a listener, and can obtain the call content and the speaker information of the group, and can also record the monitored content locally.

[0120] Based on the foregoing description, the embodiment of the present invention also proposes a group careful monitoring system in an LTE broadband cluster.

[0121] FIG. 7 is a structural diagram of a group careful monitoring system in an LTE broadband cluster according to the present invention.

[0122] As shown in FIG. 7, the system includes a mission-critical service client 701 and a mission-critical service server 702, where:

[0123] The mission-critical service client 701 is used by the mission-critical service server 702 to send a close monitoring activation request, and the close monitoring activation request includes the identification of the group that needs close monitoring;

[0124] The mission critical service server 702 is configured to return a careful monitoring activation response corresponding to the critical monitoring activation request to the critical monitoring service client 701.

[0125] In one embodiment, the mission-critical service server 702 is configured to, when the mission-critical service server 702 determines that the mission-critical service client 701 does not have the authority to monitor the mission-critical service, return the mission-critical service client 701 that the mission-critical service client 701 fails to activate the mission-critical service Response; when the mission-critical service server 702 determines that the group that needs careful monitoring does not have the right to be carefully monitored, it returns the critical monitoring activation failure response to the mission-critical service client 701; when the mission-critical service server 702 determines that the mission-critical service client 701 When the group has the right of careful monitoring and the group that needs to be carefully monitored has the right to be carefully monitored, the critical monitoring activation success response is returned to the mission-critical service client 701.

[0126] In one embodiment, before the mission-critical service client 701 sends a critical monitoring activation request to the critical mission service server 702, the group session of the group that requires careful monitoring is in an established state.

[0127] In one embodiment, in the mission critical service server 702, when the close monitoring activation response is a close monitoring activation success response and it is determined that the group session of the group requiring close monitoring is in an established state, the key The task service client 701 sends a careful monitoring group call request, and the careful monitoring group call request includes the identifier of the group that needs careful monitoring;

[0128] The mission critical service client 701 is also used to return to the mission critical service server 702 a careful monitoring group call response corresponding to the critical monitoring group call request.

[0129] In one embodiment, the mission critical service server 702 is further configured to add the mission critical service client 701 to the group session when the careful monitoring group call response is a successful response to the careful monitoring group call.

[0130] In one embodiment, the mission-critical service server 702 is also configured to wait for the group that requires careful monitoring when the critical monitoring activation response is the critical monitoring activation success response and the group session of the group that requires careful monitoring has not been established. After the group session of the group is established, send a careful monitoring group call request to the mission-critical service client 701 to carefully monitor the group

The group call request includes the identifier of the group that needs careful monitoring;

[0131] The mission-critical service client 701 is further configured to return to the mission-critical service server 702 a careful monitoring group call response corresponding to the critical monitoring group call request.

[0132] In one embodiment, the mission critical service server 702 is further configured to add the mission critical service client 701 to the group session when the careful monitoring group call response is a successful response to the careful monitoring group call.

[0133] In one embodiment, the mission critical service client 701 is also used to send a close monitoring deactivation request to the mission critical service server 702, and the close monitoring deactivation request includes the identification of the group that needs to cancel the close monitoring; [0133] [0134] The mission critical service server 702 is also used to return a careful monitoring deactivation response corresponding to the critical monitoring deactivation request to the mission critical service client 701.

[0135] In one embodiment, the mission-critical service server 702 is also used for when the close monitoring deactivation response is a close monitoring deactivation success response, the group session of the group that needs to cancel the close monitoring is in an established state and the mission is critical When the service client 701 has joined the group session, the mission-critical service client 701 is exited from the group session.

[0136] Specifically, the mission critical service client 701 may be implemented as a dispatching station, or as a user terminal.

[0137] In summary, in the embodiment of the present invention, the mission-critical service client sends a close monitoring activation request to the mission-critical service server, and the close monitoring activation request includes the identification of the group that needs close monitoring; mission critical The service server returns a careful monitoring activation response corresponding to the critical monitoring activation request to the mission-critical service client. It can be seen that the implementation of the present invention realizes careful monitoring for a specific group.

[0138] Moreover, the embodiment of the present invention also implements rigorous monitoring authority control and processes in various business scenarios, and also implements time point control for joining and exiting monitoring.

[0139] It should be noted that not all steps and modules in the above-mentioned processes and structural diagrams are necessary, and some steps or modules can be ignored according to actual needs. The order of execution of each step is not fixed and can be adjusted as needed. The division of each module is just to facilitate the description of the functional division. In actual implementation, a module can be implemented by multiple modules, and the functions of multiple modules can also be implemented by the same module. These modules can be located in the same device. It can also be located in a different device.

[0140] The hardware modules in each embodiment may be implemented in a mechanical or electronic manner. For example, a hardware module may include specially designed permanent circuits or logic devices (such as dedicated processors, such as FPGAs or ASICs) to complete specific operations. The hardware module may also include programmable logic devices or circuits temporarily configured by software (for example, including general-purpose processors or other programmable processors) for performing specific operations. As for the specific use of mechanical methods, or the use of dedicated permanent circuits, or the use of temporarily configured circuits (such as software configuration) to implement hardware modules, it can be determined according to cost and time considerations.

[0141] The present invention also provides a machine-readable storage medium that stores instructions for making a machine execute the method described in this application. Specifically, a system or device equipped with a storage medium may be provided, and the software program code for realizing the function of any one of the above-mentioned embodiments is stored on the storage medium, and the computer (or CPU or MPU of the system or device) ) Read and execute the program code stored in the storage medium. In addition, an operating system or the like operating on the computer can also be used to complete part or all of the actual operations through instructions based on the program code. It is also possible to write the program code read from the storage medium to the memory set in the expansion board inserted into the computer or to the memory set in the expansion unit connected to the computer, and then the program code-based instructions make the installation in The CPU or the like on the expansion board or the expansion unit performs part or all of the actual operations, so as to realize the function of any one of the above-mentioned embodiments.

[0142] Implementations of storage media for providing program codes include floppy disks, hard disks, magneto-optical disks, and optical disks (such as CD-ROM,

CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), magnetic tape, non-volatile memory card and ROM. Alternatively, the program code can be downloaded from a server computer or cloud via a communication network.

[0143] "Schematic" in this document means "serving as an example, instance, or illustration", and any illustration or embodiment described as "schematic" in this document should not be construed as a more preferred or more preferred embodiment. Advantages of technical solutions. In order to make the drawings concise, each figure only schematically shows the relevant parts of the present invention, and does not represent the actual structure of the product as a product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is schematically shown, or only one of them is marked. In this context, "one" does not mean that the number of relevant parts of the present invention is limited to "only this one", and "one" does not mean to exclude the situation where the number of relevant parts of the present invention is "more than one". In this article, "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. are only used to indicate the relative positional relationship between related parts, and The absolute position of these relevant parts is not limited.

[0144] The above are only preferred embodiments of the present invention, and are not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

CN 111586734 A Attached drawings The key task service client key task service server carefully monitors the activation request (including the need ¹⁰¹ ·Identification of the secret monitoring group)

102 . Listen carefully for activation response

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