CN109302686B - Method for realizing wide-narrow band cluster dispatching desk - Google Patents
Method for realizing wide-narrow band cluster dispatching desk Download PDFInfo
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Abstract
The invention discloses a method for realizing a broadband and narrowband cluster dispatching desk. The method adopts a mode of fusing LTE and TETRA wide and narrow bands, a dispatching desk is simultaneously registered in an LTE system and a TETRA system through a network port, and adopts a modular mode to design the dispatching desk into an interface UI module and a background interaction module, wherein the background interaction module is divided into a dispatching Server interaction module, an SQL Server database interaction module, an LTE interaction module and a TETRA interaction module. The dispatching Server interaction module adopts TCP communication, the SQL Server database interaction module calls API to read and write the database, the LTE interaction module calls an API interface packaged by LTE to perform data interaction, and the TETRA interaction module calls an API interface packaged by TETRA to perform data interaction, so that dual-mode dispatching is finally realized, and the requirement of a wireless private network solution for market transition from TETRA to LTE is met.
Description
Technical Field
The invention relates to digital trunking wireless communication equipment, in particular to a method for realizing a broadband and narrowband trunking dispatching desk based on LTE and TETRA technologies.
Background
At present, the traditional dispatching desk in the market has single function, only has private calling, group calling and short data services, and has poor function portability, and with the rapid development of a wireless private network solution based on an LTE system, the market urgently needs a wireless private network solution which is excessive from TETRA to LTE, so that the expansion of a private network communication product using LTE as a technology becomes an urgent need on the basis of strengthening the traditional private network communication.
Disclosure of Invention
The invention aims to solve the problems of single function and poor function portability of the traditional dispatching desk, and particularly provides a method for realizing a broadband and narrowband cluster dispatching desk based on LTE (Long term evolution) and TETRA (terrestrial trunked radio) technologies. The method fuses LTE and TETRA in the dispatching desk, adopts a modular development mode, and provides a dual-mode dispatching scheme for the application field of the wireless private network on the basis of accessing a dual-core network. The system has new functions of voice calling, data service, video call, video pull-up, video push and the like, makes a more comprehensive product related to the field of industries, can be transplanted into dispatching desk products of different industries, and is beneficial to police, ports and airports.
The technical scheme adopted by the invention is as follows: a method for realizing a broad-band and narrow-band cluster dispatching desk is characterized in that the dispatching desk comprises an interface UI module and a background interaction module; the interface UI module adopts a xaml interface language to construct interface information to be displayed, and the interface information comprises a login interface, a main scheduling interface, a video interface, a history recording interface and a configuration interface; the interface display element and the background interaction module update interface information in real time in a mode of Binding a static variable by Binding; the background interaction module is divided into a scheduling Server interaction module, an SQL Server database interaction module, an LTE interaction module and a TETRA interaction module; the scheduling server interaction module comprises a message sending module and a message analyzing module, is respectively connected with the scheduling server through a network port, and transmits ATS signals and clock signals in a TCP communication mode; the SQL Server database interaction module comprises a database reading module and a database writing module, is respectively connected with the SQL Server database through a network port, and realizes the reading and writing of the database by calling the Windows API; the LTE interaction module also comprises an interface sending module and an event analysis module, is connected with the LTE server through a network port, and realizes login, short message, voice call, video pull-up and video push services by calling an API (application program interface) function of the LTE; the TETRA interaction module comprises an interface sending module and a message analyzing module, is connected with the TETRA server through a network port, and realizes login authentication and voice call services by calling an API (application program interface) function of the TETRA.
The SQL Server database interaction module of the invention comprises a read-write thread, and the read-write thread executes the following operations:
after a database read-write thread runs, reading whether a cache area has a value or not, if not, the thread enters a waiting state, if so, the data is read, at the moment, the connection state of the database is judged, if not, the data is discarded, if the data is connected, the data function is analyzed, if the data is a mapping table reading function, TGroupInfo, TRadioInfo, TReseCon, TMessage and Train _ Pos data tables are sequentially read, all the data are successfully read, the data which are processed in the read-write cache area are removed, if any data table is read in error, the data are not continuously read, the reading of the database error is prompted, and the data which are processed in the read-write cache area are removed; if the analyzed data function is reading record, reading a TRecord data table into an internal memory, if the reading is successful, removing the processed data in the read-write cache region, if the reading is failed, prompting that the database is read wrongly, and removing the processed data in the read-write cache region; if the analyzed data function is write record, writing the data to be written into a TRecord data table, if the writing is successful, removing the processed data in the read-write cache area, and if the writing is failed, prompting that the data base is wrongly written, and removing the processed data in the read-write cache area.
The scheduling server interaction module comprises a clock and an ATS analysis thread, and the clock and the ATS analysis thread execute the following operations:
after the data processing thread runs, judging whether a receiving cache region has a value or not, if not, the thread enters a waiting state, if so, performing CRC (cyclic redundancy check) on an incoming message, if the check fails, returning to wait for the next message, if the check succeeds, judging whether the message is a message sent to a dispatching desk by a dispatching server, if not, returning to wait for the next message, if so, judging the type of a function code, if the function code represents a time calibration message, performing processing for changing the system time, updating the interface time of the dispatching desk, and returning to start waiting for the next message after the processing is finished; and if the function code represents the ATS message, updating the information of the on-line train dynamic array, updating an on-line train list, and returning to start waiting for the next message after the processing is finished.
The LTE interactive module comprises an LTE interface calling thread, and the LTE interface calling thread executes the following operations:
after the calling interface thread runs, judging whether a sending cache region has a value, if not, the thread enters into waiting, if so, reading data, judging whether a dispatching desk is registered in an LTE server, if not, removing the data and returning to start, if so, judging the interface calling function, and the functions are as follows: calling, hanging up, temporary group calling, dynamic recombination, short message, dispatching group, positioning, video pull-up, frame selection and logout.
If the calling function is judged after the data in the sending buffer area are processed, the calling function is processed; firstly, judging which call belongs to point call voice, group call voice and emergency call, then establishing call parameters aiming at a corresponding call mode, sending the call parameters to an LTE system by calling a call interface, correspondingly loading a call list and a private list according to whether the point call or the group call is sent after the call is sent, and finally removing the processed data and sending the data to a cache region. If the data in the sending buffer area is processed and then is judged to be the on-hook function, the Session ID to be on-hook is obtained, then whether the Session ID is that the call is established is judged, if yes, the on-hook interface is called, and finally the processed data is removed from the sending buffer area. If the temporary group calling function is judged after the data in the sending buffer area is processed, group information needing the temporary group calling is constructed, calling parameters are constructed, a calling interface is called, and finally the processed data is removed from the sending buffer area. If the data in the sending buffer area is judged to be the dynamic restructuring function after being processed, the group information needing dynamic restructuring is obtained, the restructuring dynamic interface is called, and finally the processed data is removed from the sending buffer area. If the function of sending short messages is judged after the data of the sending buffer area are processed, group information of the short messages to be sent is obtained, parameters of the short messages to be sent are constructed, a short message sending interface is called, and finally the processed data are removed from the sending buffer area. If the dispatching group function is judged after the data of the sending buffer area is processed, the group information of the group needing to be dispatched is obtained, if the dispatching group function is the group information of the dispatching group, a dispatching group interface is called to dispatch, a train group list is updated, and finally the processed data is removed from the sending buffer area. If the data in the sending buffer area is processed and then is judged to be the positioning function, the information of the object needing to be positioned is obtained, the information of the object needing to be positioned is established, the positioning interface is called, and finally the processed data is removed from the sending buffer area. If the video pull-up function is judged after the data processing of the sending buffer area, the video pull-up processing is carried out; the method comprises the steps of firstly obtaining object information needing video pull-up, then constructing the video pull-up object information, calling a video pull-up interface to send the object information to an LTE system for video pull-up processing, and finally removing processed data from a sending cache region. And if the data in the sending buffer area is processed and the frame selection function is judged, acquiring frame selection start-stop coordinates, calling a frame selection interface, and finally removing the processed data from the sending buffer area. If the data in the sending buffer area is judged to be the logout function after being processed, a logout interface is called, and finally the processed data is removed from the sending buffer area.
The TETRA interaction module comprises a TETRA interface calling thread, and the TETRA interface calling thread executes the following operations:
after calling an interface thread to run, judging whether a sending buffer area has a value or not, if not, the thread enters waiting, if so, reading data, judging whether a dispatching desk is registered in a TETRA server or not, if not, removing the data and returning to the beginning, if so, judging whether the calling, sending a short message or canceling functions are performed, and if the sending buffer area data is processed, judging the calling function, and processing the calling function; firstly, judging which call belongs to point call voice, group call voice and emergency call, then constructing call parameters aiming at a corresponding call mode, sending the call parameters to a TETRA system through calling a call interface, correspondingly loading a call list and a private list according to whether the point call or the group call is sent after the call is sent, and finally removing the processed data and sending the data to a cache region.
The beneficial effects produced by the invention are as follows: by adopting the fusion of LTE and TETRA wide and narrow bands, the problem of a wireless private network solution which is excessive from TETRA to LTE in the market is solved.
Drawings
FIG. 1 is a block diagram of the system and apparatus components of the present invention;
FIG. 2 is a software framework diagram of the present invention;
FIG. 3 is a flow chart of the SQL Server database module reading and writing process of the present invention;
FIG. 4 is a flowchart illustrating the dispatch server module clock and ATS resolution process of the present invention;
FIG. 5 is a flow chart of an LTE module interface invocation of the present invention;
fig. 6 is a flow chart of TETRA module interface call according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, the LTE mobile terminal, TETRA mobile terminal, base station, LTE core network, TETRA core network, ethernet switch, scheduling station, and scheduling server are included in the drawing. The dispatching desk is a broadband and narrowband cluster dispatching desk based on LTE and TETRA technologies, namely a common PC. The dispatching desk is respectively connected with the dispatching server, the TETRA core network and the LTE core network by adopting an Ethernet. The LTE mobile terminal and the TETRA mobile terminal are respectively registered in a base station connected with an LTE core network and a base station connected with a TETRA core network through air interfaces. Through the structure, the dispatching desk can be simultaneously registered in an LTE core network and a TETRA core network, thereby communicating with an LTE mobile terminal and a TETRA mobile terminal and providing related service services, such as short data, voice, video and the like, for the trunking user.
As shown in fig. 2, the software of the dispatching desk includes a method for implementing a broadband and narrowband cluster dispatching desk, and is characterized in that the dispatching desk includes an interface UI module and a background interaction module; the interface UI module adopts a xaml interface language to construct interface information to be displayed, and the interface information comprises a login interface, a main scheduling interface, a video interface, a history recording interface and a configuration interface; the interface display element and the background interaction module update the interface information in real time in a Binding mode; the background interaction module is divided into a scheduling Server interaction module, an SQL Server database interaction module, an LTE interaction module and a TETRA interaction module; the scheduling server interaction module comprises a message sending module and a message analyzing module, is respectively connected with the scheduling server through a network port, and transmits ATS signals and clock signals in a TCP communication mode; the SQL Server database interaction module comprises a database reading module and a database writing module, is respectively connected with the SQL Server database through a network port, and realizes the reading and writing of the database by calling the Windows API; the LTE interaction module also comprises an interface sending module and an event analysis module, is connected with the LTE server through a network port, and realizes login, short message, voice call, video pull-up and video push services by calling an API (application program interface) function of the LTE; the TETRA interaction module comprises an interface sending module and a message analyzing module, is connected with the TETRA server through a network port, and realizes login authentication and voice call services by calling an API (application program interface) function of the TETRA.
The invention realizes the following functions:
1. the interface UI module comprises an element information list for interface display and operation information of the interface.
2. The scheduling server interaction module comprises a message sending module and a message analyzing module and is mainly used for carrying out interaction of services such as ATS (automatic transfer system), clock and the like.
3. The database interaction module comprises a database reading module and a database writing module and is mainly used for interacting services such as resource lists, information records and the like.
4. The LTE interaction module comprises an interface sending module and an event analysis module and is mainly used for interacting services such as short messages, voice, video and the like.
5. The TETRA interaction module comprises an interface sending module and a message analysis module and is mainly used for interacting voice services.
6. The communication between the modules is completed by adopting interface calling and event delegation.
7. When the traffic is busy, the communication delay of data may be caused, and the program adopts a multithread processing mode to prevent the delay so as to realize the function of the dispatching desk software.
The invention adopts a wide-narrow band fusion mode of LTE and TETRA, the dispatching station is simultaneously registered in an LTE system and a TETRA system through a network port, and the communication between the fixed station, the locomotive station and other dispatching stations is realized through the cooperative coordination with the dispatching server. The method is developed in a modularized mode, modules are mutually independent to a certain extent, and communication among the modules adopts a mode of interface calling and event delegation. The dispatching desk comprises an interface UI module and a background interaction module. The interface UI module adopts a xaml interface language to construct interface information to be displayed, the interface information comprises a login interface, a main scheduling interface, a video interface, a history recording interface and a configuration interface, and interface display elements and the background interaction module update the interface information in real time in a Binding mode; the background interaction module is divided into a scheduling Server interaction module, an SQL Server database interaction module, an LTE interaction module and a TETRA interaction module. The dispatch server interaction module is connected with the dispatch server through a network port, and transmits ATS signals and clock signals in a TCP communication mode. The ATS signal is provided by a subway signal system, and the basic information comprises information such as train number, train group number, train position information, uplink and downlink. Usually, each train has its own fixed train group number, corresponding to it, the locomotive platform installed on each locomotive also has its own fixed radio station ID, and usually two locomotive platforms installed on the same train are independently organized into a talk group, so that the corresponding relationship between the train group number and the train talk group can be established; the clock signal is provided by a subway clock system, and the clock synchronization of the dispatching desk is realized. The SQL Server database interaction module is connected with a database Server through a network port, and realizes the reading and writing of the database by calling Windows API, and the main data tables comprise TGroupInfo (storing Train group and team group information), TRadioInfo (storing information of a mobile station and a locomotive station), TRescON (storing dispatcher information), Message (storing preset short Message information), Train _ Pos (storing site information) and TRecord (storing record information). The LTE interaction module is connected with the LTE server through a network port, and realizes login, short message, voice call, video pull-up and video push services by calling an API (application program interface) function of the LTE.
As shown in fig. 3, the SQL Server database interaction module includes a read-write thread, and the read-write thread performs the following operations:
after a database read-write thread runs, reading whether a cache region has a value or not, if not, the thread enters a waiting state, if so, the data is read, at the moment, the connection state of the database is judged, if not, the data is discarded, if the data is connected, the data function is analyzed, if the data function is read for a mapping table function, TGroupInfo, TRadioInfo, TRescCon, Tmessage and Train _ Pos data tables are sequentially read, all the data are successfully read, the data which are processed in the read-write cache region are removed, if any one data table is read in error, the data are not continuously read, the reading of the database error is prompted, and the data which are processed in the read-write cache region are removed; if the analyzed data function is reading record, reading a TRecord data table into an internal memory, if the reading is successful, removing the processed data in the read-write cache region, if the reading is failed, prompting that the database is read wrongly, and removing the processed data in the read-write cache region; if the analyzed data function is write record, writing the data to be written into a TRecord data table, if the writing is successful, removing the processed data in the read-write cache area, and if the writing is failed, prompting that the data base is wrongly written, and removing the processed data in the read-write cache area.
As shown in fig. 4, the dispatch server interaction module contains a clock and ATS resolution thread, and the clock and ATS resolution thread performs the following operations:
after the data processing thread runs, judging whether a receiving cache region has a value or not, if not, the thread enters a waiting state, if so, performing CRC (cyclic redundancy check) on an incoming message, if the check fails, returning to wait for the next message, if the check succeeds, judging whether the message is a message sent to a dispatching desk by a dispatching server, if not, returning to wait for the next message, if so, judging the type of a function code, if the function code represents a time calibration message, performing processing for changing the system time, updating the interface time of the dispatching desk, and returning to start waiting for the next message after the processing is finished; and if the function code represents the ATS message, updating the information of the on-line train dynamic array, updating an on-line train list, and returning to start waiting for the next message after the processing is finished.
As shown in fig. 5, the LTE interactive module includes an LTE interface calling thread, and the LTE interface calling thread performs the following operations:
after the calling interface thread runs, judging whether a sending cache region has a value, if not, the thread enters into waiting, if so, reading data, judging whether a dispatching desk is registered in an LTE server, if not, removing the data and returning to start, if so, judging the interface calling function, and the functions are as follows: calling, hanging up, temporary group calling, dynamic recombination, short message, dispatching group, positioning, video pull-up, frame selection and logout.
If the calling function is judged after the data in the sending buffer area are processed, the calling function is processed; firstly, judging which call belongs to point call voice, group call voice and emergency call, then establishing call parameters aiming at a corresponding call mode, sending the call parameters to an LTE system by calling a call interface, correspondingly loading a call list and a private list according to whether the point call or the group call is sent after the call is sent, and finally removing the processed data and sending the data to a cache region. If the data in the sending buffer area is processed and judged to be the on-hook function, the Session ID (communication identification number) to be on-hook is obtained, then whether the Session ID is the call established is judged, if yes, the on-hook interface is called, and finally the processed data is removed from the sending buffer area. If the temporary group calling function is judged after the data in the sending buffer area is processed, group information needing the temporary group calling is constructed, calling parameters are constructed, a calling interface is called, and finally the processed data is removed from the sending buffer area. If the data in the sending buffer area is judged to be the dynamic restructuring function after being processed, the group information needing dynamic restructuring is obtained, the restructuring dynamic interface is called, and finally the processed data is removed from the sending buffer area. If the function of sending short messages is judged after the data of the sending buffer area are processed, group information of the short messages to be sent is obtained, parameters of the short messages to be sent are constructed, a short message sending interface is called, and finally the processed data are removed from the sending buffer area. If the dispatching group function is judged after the data of the sending buffer area is processed, the group information of the group needing to be dispatched is obtained, if the dispatching group function is the group information of the dispatching group, a dispatching group interface is called to dispatch, a train group list is updated, and finally the processed data is removed from the sending buffer area. If the data in the sending buffer area is processed and then is judged to be the positioning function, the information of the object needing to be positioned is obtained, the information of the object needing to be positioned is established, the positioning interface is called, and finally the processed data is removed from the sending buffer area. If the video pull-up function is judged after the data processing of the sending buffer area, the video pull-up processing is carried out; the method comprises the steps of firstly obtaining object information needing video pull-up, then constructing the video pull-up object information, calling a video pull-up interface to send the object information to an LTE system for video pull-up processing, and finally removing processed data from a sending cache region. And if the data in the sending buffer area is processed and the frame selection function is judged, acquiring frame selection start-stop coordinates, calling a frame selection interface, and finally removing the processed data from the sending buffer area. If the data in the sending buffer area is judged to be the logout function after being processed, a logout interface is called, and finally the processed data is removed from the sending buffer area.
As shown in fig. 6, the TETRA interaction module contains a TETRA interface call thread, which performs the following operations:
after calling an interface thread to run, judging whether a sending buffer area has a value or not, if not, the thread enters waiting, if so, reading data, judging whether a dispatching desk is registered in a TETRA server or not, if not, removing the data and returning to the beginning, if so, judging whether the calling, sending a short message or canceling functions are performed, and if the sending buffer area data is processed, judging the calling function, and processing the calling function; firstly, judging which call belongs to point call voice, group call voice and emergency call, then constructing call parameters aiming at a corresponding call mode, sending the call parameters to a TETRA system through calling a call interface, correspondingly loading a call list and a private list according to whether the point call or the group call is sent after the call is sent, and finally removing the processed data and sending the data to a cache region.
Claims (5)
1. A method for realizing a broad-band and narrow-band cluster dispatching desk is characterized in that the dispatching desk comprises an interface UI module and a background interaction module; the interface UI module adopts a xaml interface language to construct interface information to be displayed, and the interface information comprises a login interface, a main scheduling interface, a video interface, a history recording interface and a configuration interface; the interface display element and the background interaction module update interface information in real time in a mode of Binding a static variable by Binding; the background interaction module is divided into a scheduling Server interaction module, an SQL Server database interaction module, an LTE interaction module and a TETRA interaction module; the scheduling server interaction module comprises a message sending module and a message analyzing module, is respectively connected with the scheduling server through a network port, and transmits ATS signals and clock signals in a TCP communication mode; the SQL Server database interaction module comprises a database reading module and a database writing module, is respectively connected with the SQL Server database through a network port, and realizes the reading and writing of the database by calling the Windows API; the LTE interaction module also comprises an interface sending module and an event analysis module, is connected with the LTE server through a network port, and realizes login, short message, voice call, video pull-up and video push services by calling an API (application program interface) function of the LTE; the TETRA interaction module comprises an interface sending module and a message analyzing module, is connected with the TETRA server through a network port, and realizes login authentication and voice call services by calling an API (application program interface) function of the TETRA.
2. The method according to claim 1, wherein the SQL Server database interaction module includes a read-write thread, and the read-write thread performs the following operations:
after a database read-write thread runs, reading whether a cache area has a value or not, if not, the thread enters a waiting state, if so, reading data, judging the connection state of the database at the moment, if not, discarding the data, if connected, performing a data analysis function, if the function is a mapping table reading function, sequentially reading TGroupInfo, TRadioInfo, TRESCon, TMessage and Train _ Pos data tables, if all the data are successfully read, removing the data which are processed in the read-write cache area, if any one data table is read in error, stopping reading, prompting to read the database error, and removing the data which are processed in the read-write cache area; if the analyzed data function is reading record, reading a TRecord data table into an internal memory, if the reading is successful, removing the processed data in the read-write cache region, if the reading is failed, prompting that the database is read wrongly, and removing the processed data in the read-write cache region; if the analyzed data function is write record, writing the data to be written into a TRecord data table, if the writing is successful, removing the processed data in the read-write cache area, and if the writing is failed, prompting that the data base is wrongly written, and removing the processed data in the read-write cache area.
3. The method as claimed in claim 1, wherein the dispatch server interaction module includes a clock and ATS resolution thread, and the clock and ATS resolution thread performs the following operations: after the data processing thread runs, judging whether a receiving cache region has a value or not, if not, the thread enters a waiting state, if so, performing CRC (cyclic redundancy check) on an incoming message, if the check fails, returning to wait for the next message, if the check succeeds, judging whether the message is a message sent to a dispatching desk by a dispatching server, if not, returning to wait for the next message, if so, judging the type of a function code, if the function code represents a time calibration message, performing processing for changing the system time, updating the interface time of the dispatching desk, and returning to start waiting for the next message after the processing is finished; and if the function code represents the ATS message, updating the information of the on-line train dynamic array, updating an on-line train list, and returning to start waiting for the next message after the processing is finished.
4. The method of claim 1, wherein the LTE interactive module includes an LTE interface calling thread, and the LTE interface calling thread performs the following operations:
after the calling interface thread runs, judging whether a sending cache region has a value, if not, the thread enters into waiting, if so, reading data, judging whether a dispatching desk is registered in an LTE server, if not, removing the data and returning to start, if so, judging the interface calling function, and the functions are as follows: calling, hanging up, temporarily group calling, dynamic recombination, short message, dispatching group, positioning, video pull-up, frame selection and logout;
if the calling function is judged after the data in the sending buffer area are processed, the calling function is processed; firstly, judging which call belongs to point call voice, group call voice and emergency call, then constructing call parameters aiming at a corresponding call mode, sending the call parameters to an LTE system by calling a call interface, correspondingly loading a call list and a private list according to whether the point call or the group call is sent after the call is sent, and finally removing the processed data and sending the data to a cache region;
if the data in the sending buffer area is processed and then is judged to be the on-hook function, the sessionID to be on-hook is obtained, then whether the sessionID is the call established or not is judged, if yes, an on-hook interface is called, and finally the processed data is removed from the sending buffer area;
if the data in the sending buffer area is processed and then is judged to be the temporary group calling function, group information needing the temporary group calling is constructed, calling parameters are constructed, a calling interface is called, and finally the processed data is removed from the sending buffer area;
if the data in the sending buffer area is judged to be the dynamic restructuring function after being processed, acquiring group information needing dynamic restructuring, calling a restructuring dynamic interface, and finally removing the processed data from the sending buffer area;
if the sending cache area data is processed and then the sending cache area data is judged to have the short message sending function, group information of the short message to be sent is obtained, a short message sending parameter is established, a short message sending interface is called, and finally the processed data is removed from the sending cache area;
if the data of the sending buffer area is processed and then the function of the dispatching group is judged, the group information of the group needing to be dispatched is obtained, if the data of the sending buffer area is the group information of the dispatching group, a dispatching group interface is called to dispatch, a train group list is updated, and finally the processed data is removed from the sending buffer area;
if the data in the sending cache region is processed and then is judged to be a positioning function, acquiring the information of the object to be positioned, constructing the information of the object to be positioned, calling a positioning interface, and finally removing the processed data from the sending cache region;
if the video pull-up function is judged after the data processing of the sending buffer area, the video pull-up processing is carried out; firstly, acquiring object information needing video pull-up, then constructing the video pull-up object information, calling a video pull-up interface to send the object information to an LTE system for video pull-up processing, and finally removing processed data from a sending cache region;
if the data in the sending buffer area is processed and then the frame selection function is judged, the frame selection starting and stopping coordinates are obtained, a frame selection interface is called, and finally the processed data is removed from the sending buffer area;
if the data in the sending buffer area is judged to be the logout function after being processed, a logout interface is called, and finally the processed data is removed from the sending buffer area.
5. The method of claim 1, wherein the TETRA interaction module comprises a TETRA interface call thread, and wherein the TETRA interface call thread performs the following operations:
after calling an interface thread to run, judging whether a sending buffer area has a value or not, if not, the thread enters waiting, if so, reading data, judging whether a dispatching desk is registered in a TETRA server or not, if not, removing the data and returning to the beginning, if so, judging whether the calling, sending a short message or canceling functions are performed, and if the sending buffer area data is processed, judging the calling function, and processing the calling function; firstly, judging which call belongs to point call voice, group call voice and emergency call, then constructing call parameters aiming at a corresponding call mode, sending the call parameters to a TETRA system through calling a call interface, correspondingly loading a call list and a private list according to whether the point call or the group call is sent after the call is sent, and finally removing the processed data and sending the data to a cache region.
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| CN110267213B (en) * | 2019-06-26 | 2020-09-18 | 中铁第四勘察设计院集团有限公司 | Wide-band and narrow-band fusion communication information system for railway passenger station |
| CN110769378A (en) * | 2019-10-30 | 2020-02-07 | 成都中航信虹科技股份有限公司 | Private network communication scheduling device, method and system |
| CN113038424B (en) * | 2019-12-23 | 2022-06-07 | 成都鼎桥通信技术有限公司 | Calling method and device for LTE-R and GSM-R dual-mode terminal |
| CN111918222A (en) * | 2020-08-10 | 2020-11-10 | 天津七一二通信广播股份有限公司 | Implementation method of eLTE-based wireless dispatching desk |
| CN111917791B (en) * | 2020-08-10 | 2022-08-02 | 天津七一二通信广播股份有限公司 | Scheduling server system with high stability by adopting modularization |
| CN112040478A (en) * | 2020-08-26 | 2020-12-04 | 天津七一二通信广播股份有限公司 | Method for realizing double-mode dispatching desk |
| CN114866522B (en) * | 2022-07-07 | 2022-12-02 | 天津七一二移动通信有限公司 | Multimode whole-network recording system |
| CN117880330A (en) * | 2024-03-13 | 2024-04-12 | 天津七一二移动通信有限公司 | Dual-mode dispatching desk implementation method suitable for rail transit |
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