CN108430041B - Method for obtaining answering information of terminal in broadband cluster system - Google Patents
Method for obtaining answering information of terminal in broadband cluster system Download PDFInfo
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- CN108430041B CN108430041B CN201710081581.XA CN201710081581A CN108430041B CN 108430041 B CN108430041 B CN 108430041B CN 201710081581 A CN201710081581 A CN 201710081581A CN 108430041 B CN108430041 B CN 108430041B
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
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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
- H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
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Abstract
The invention provides a method for acquiring answering information of a terminal in a broadband cluster system, and relates to the technical field of communication. The method comprises the following steps: a dispatching desk sends a terminal call information request message to a cluster core network T-CN, so that the T-CN obtains answering information of the terminal according to the terminal call information request message, and the terminal call information request message comprises identification information of the terminal; and after receiving a terminal call information report message sent by the terminal, the T-CN sends the terminal call information report message to the dispatching desk, wherein the terminal call information report message comprises answering information reported by the terminal, so that the answering information of the terminal is acquired. By the invention, the dispatching desk in the broadband cluster system can acquire the answering condition of the called terminal.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method for acquiring answering information of a terminal in a broadband trunking system.
Background
The B-TrunC (LTE based Broadband Trunking Communication) Broadband Trunking system is based on the LTE technology, is a dedicated wireless Communication system developed to meet the demand of industry users for commanding and scheduling, and is applied to a specific industry, and provides a commanding and scheduling function to users at a higher rate and a larger bandwidth, and is a multi-purpose and high-performance wireless Communication system. In recent years, broadband cluster systems have wide application markets in the fields of government departments, public safety, emergency communication, electric power, civil aviation, petrochemical industry, military and the like.
In the domestic rail transit field, a narrow-band trunking system is gradually transited to a wide-band trunking system, and group calling in the rail transit system is the most common calling mode. However, the current B-TrunC broadband trunking system cannot sense whether the called terminal hears a group call or which group call is heard.
In the prior art, a mechanism for a dispatching desk to acquire the answering condition of a called terminal is not provided in a B-trunC broadband trunking standard, and the system cannot completely meet the customer requirements in the field of rail transit. Therefore, the technical problems in the prior art are as follows: the trunking core network or the dispatching desk cannot acquire the answering condition of the called terminal, so that the requirement for acquiring the answering condition of the called terminal in the trunking service cannot be met.
Disclosure of Invention
The invention aims to provide a method for acquiring answering information of a terminal in a broadband trunking system. The method solves the technical problems that: how to enable a dispatching desk in a broadband trunking system to acquire the answering condition of a called terminal so as to meet the requirement on acquiring the answering condition of the called terminal in trunking service.
In order to achieve the above object, the present invention provides a method for acquiring listening information of a terminal in a broadband trunking system. The method comprises the following steps:
a dispatching desk sends a terminal call information request message to a cluster core network T-CN, so that the T-CN obtains answering information of the terminal according to the terminal call information request message, and the terminal call information request message comprises identification information of the terminal;
and after receiving a terminal call information report message sent by the terminal, the T-CN sends the terminal call information report message to the dispatching desk, wherein the terminal call information report message comprises answering information reported by the terminal, so that the answering information of the terminal is acquired.
Optionally, the obtaining, by the T-CN, answer information of the terminal according to the terminal call information request message includes:
when the T-CN judges that the type of the identification information is a terminal number according to the identification information, the T-CN sends a terminal call information reporting control message to a first terminal corresponding to the terminal number, so that the first terminal reports the terminal call information reporting message to the T-CN according to the terminal call information reporting control message;
when the T-CN judges the type of the identification information to be a group number according to the identification information, the T-CN analyzes the group number to acquire the numbers of all members in the group, and sends the terminal call information reporting control message to all second terminals in the group, so that each second terminal reports a terminal call information report message to the T-CN according to the terminal call information reporting control message,
the terminal call information report message comprises answering information of the terminal.
Optionally, the terminal call information request message further includes acquisition type information, and the method further includes:
after receiving a terminal call information reporting control message sent by the T-CN according to the terminal call information request message, the terminal reports a terminal call information report message to the T-CN according to the acquisition type information included in the terminal call information reporting control message,
wherein the terminals include the first terminal and the second terminal.
Optionally, the obtaining type information included in the terminal call information request message includes one of the following:
real-time acquisition, periodic acquisition, and stopping periodic acquisition.
Optionally, the method further comprises:
if the acquisition type is real-time acquisition, the terminal immediately sends a terminal call information report message to the T-CN;
if the acquisition type is periodic acquisition, the terminal opens a periodic timer of the terminal and periodically sends a terminal call information report message to the T-CN;
if the acquisition type is to stop the periodic acquisition, the terminal closes the periodic timer of the terminal and does not send a terminal call information report message to the T-CN periodically.
Optionally, the answering information includes:
and the group identifier of the group call currently answered by the terminal.
Optionally, the terminal call information report message further includes location information of the terminal, where the location information includes an ECGI of a cell in which the terminal is located and/or a tracking area identity TAI in which the terminal is located.
According to the technical scheme, the dispatching desk sends the terminal call information request message to the T-CN of the cluster core network, so that the T-CN sends the terminal call information report control message to the corresponding terminal according to the terminal call information request message, and the T-CN sends the answering information of the terminal to the dispatching desk after acquiring the answering information of the terminal, so that the dispatching desk in the broadband cluster system can acquire the answering condition of the called terminal, and the requirement on acquiring the answering condition of the called terminal in the cluster service is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from these without inventive effort.
Fig. 1 is a flowchart of a method for acquiring answering information of a terminal in a broadband trunking system according to an embodiment of the present invention;
fig. 2 is a flowchart of signaling interaction for obtaining answering information of a single terminal according to an embodiment of the present invention;
fig. 3 is a flowchart of signaling interaction for acquiring listening information of all terminals in a group according to an embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of a method for acquiring listening information of a terminal in a broadband trunking system according to an embodiment of the present invention. As shown in fig. 1, a method for acquiring listening information of a terminal in a broadband trunking system according to an embodiment of the present invention includes:
in step S101, a dispatching desk sends a terminal call information request message to a clustered core network T-CN, so that the T-CN obtains answer information of the terminal according to the terminal call information request message.
Wherein the terminal call information request message includes identification information of the terminal. The T-CN acquires answering information of the terminal according to the terminal call information request message, and the method comprises the following steps: when the T-CN (Trunking Core Network) judges that the type of the identification information is a terminal number according to the identification information, the T-CN sends a terminal call information reporting control message to a first terminal corresponding to the terminal number, so that the first terminal reports the terminal call information reporting message to the T-CN according to the terminal call information reporting control message; when the T-CN judges that the type of the identification information is a group number according to the identification information, the T-CN analyzes the group number to acquire the numbers of all members in the group and sends the terminal call information reporting control message to all second terminals in the group in a point-to-point manner, so that each second terminal reports the terminal call information reporting message to the T-CN according to the terminal call information reporting control message, wherein the terminal call reporting message comprises answering information of the terminal, the answering information comprises a group identification of a group call which is currently answered by the terminal, the group identification can be a group dialing number GDN or a group identification GID, and the T-CN sends the terminal call information reporting control message to all the second terminals in the group in a point-to-point manner.
Optionally, the terminal call report message includes current location information of the terminal, where the location information may be an ECGI of a cell in which the terminal is located and/or a tracking area identity TAI in which the terminal is located.
Finally, in step S102, after receiving a terminal call information report message sent by the terminal, the T-CN sends a terminal call information report message to the dispatching desk, where the terminal call information report message includes answer information reported by the terminal, so as to achieve acquisition of the answer information of the terminal.
In this embodiment, a dispatching desk sends a terminal call information request message to a clustered core network T-CN, so that the T-CN issues a terminal call information reporting control message to a corresponding terminal according to the terminal call information request message, and after acquiring answer information of the terminal, the T-CN sends the answer information of the terminal to the dispatching desk, so that the dispatching desk in a broadband clustered system can acquire the answer condition of a called terminal, thereby satisfying the requirement for acquiring the answer condition of the called terminal in a clustered service.
Preferably, the terminal call information request message further includes acquisition type information, and the method further includes: after receiving a terminal call information reporting control message sent by the T-CN according to the terminal call information request message, the terminal reports a terminal call information report message to the T-CN according to the acquisition type information included in the terminal call information reporting control message, where the terminal includes the first terminal and the second terminal. Specifically, the acquisition type information includes one of the following: real-time acquisition, periodic acquisition, and stopping periodic acquisition. Therefore, the terminal can report the answering information in real time, can report the answering information periodically, or stops reporting the answering information periodically. It should be noted that, if the terminal receives the real-time reporting control message during the periodic reporting of the answering information, the original periodic reporting is maintained after the current answering information is reported in real time.
Specifically, the method further comprises: if the acquisition type is real-time acquisition, the terminal immediately sends a terminal call information report message to the T-CN after receiving a call information report control message sent by the T-CN; if the acquisition type is periodic acquisition, the terminal opens a periodic timer of the terminal and periodically sends a terminal call information report message to the T-CN; if the acquisition type is to stop the periodic acquisition, the terminal closes the periodic timer of the terminal and does not send a terminal call information report message to the T-CN periodically.
Preferably, the terminal call information report message includes location information of the terminal. Wherein the location information comprises: the ECGI of the cell where the terminal is located and/or the tracking area identification TAI where the terminal is located. Thereby, the dispatching desk can also obtain the position information of the terminal.
Fig. 2 is a flowchart of signaling interaction for obtaining answering information of a single terminal according to an embodiment of the present invention. As shown in fig. 2, a dispatching Desk (DC) desires to acquire the answering situation and location information of a UE (User Equipment) of a group call, and sends a terminal call information request message to a T-CN. The message carries the terminal number and the acquisition type information of the UE. The acquisition type information includes Direct acquisition (Direct), periodic acquisition (Period start), and Stop periodic acquisition (Period Stop). And after receiving the terminal call information request message sent by the DC, the T-CN returns a terminal call information response message to the DC to indicate that the terminal call information request sent by the dispatching desk is received, judges that the identification information carried in the terminal call request message is a terminal number, and sends an NAS message, namely a terminal call information reporting control message, to the UE. And after receiving the terminal call information reporting control message sent by the T-CN, the UE judges the acquisition type according to the acquisition type information in the terminal call information reporting control message, and if the type is directly acquired, immediately sends a terminal call information report message to the T-CN. If the type is periodic acquisition, a periodic timer of the terminal is opened, and a terminal call information report message is periodically sent to the T-CN. If the type is stopping periodic acquisition, the periodic timer of the terminal is closed, and the terminal call information report message is not periodically sent to the T-CN any more. The terminal talk report message includes a group number of a group call currently heard by the UE, an ECGI (E-UTRAN Cell Global Identity) of a Cell where the UE is located, and a TAI (Tracking Area Identity) of the UE. And the T-CN sends a terminal call information report message to the DC, wherein the message carries the group number of the group call currently heard by the UE, the ECGI of the cell where the UE is located and the TA where the UE is located. And the DC returns a terminal call information report response indication to the T-CN and receives the terminal call information report sent by the T-CN. Therefore, the terminal can report the answering condition and the position information of the terminal to the group call periodically, so that the T-CN can acquire the answering condition and the position of the called terminal and can inform the dispatching station terminal of the answering condition and the position information of the group call.
Fig. 3 is a flowchart of signaling interaction for acquiring listening information of all terminals in a group according to an embodiment of the present invention. As shown in fig. 3, the DC wants to acquire the answering situation and location information of the group call called UE, and sends a terminal call information request message to the T-CN. The message carries the group dialing number and the acquisition type information of the group calling. After receiving the terminal call information request message sent by the DC, the T-CN returns a terminal call information response message to the DC, which indicates that the terminal call information request sent by the dispatching desk is received, judges that the identification information in the terminal call request message is a group number, and sends NAS information, namely terminal call information reporting control message, to all the UEs in the group. And after receiving the terminal call information reporting control message sent by the T-CN, the UE judges the acquisition type according to the acquisition type information in the terminal call information reporting control message, and if the type is directly acquired, immediately sends a terminal call report message to the T-CN. If the type is periodic acquisition, a periodic timer of the terminal is opened, and a terminal call information report message is periodically sent to the T-CN. If the type is stopping periodic acquisition, the periodic timer of the terminal is closed, and the terminal call information report message is not periodically sent to the T-CN any more. The terminal call information report message carries the group number of the group call currently answered by the UE, the ECGI of the cell where the UE is located and the TAI where the UE is located. And the T-CN sends a terminal call information report message to the DC, wherein the message carries the group number of the group call currently answered by the UE, the ECGI of the cell where the UE is located and the TAI where the UE is located. And the DC returns a terminal call information report response indication to the T-CN and receives the terminal call information report sent by the T-CN. Since the group number is carried in the terminal call information request message, the DC will receive the terminal call information report messages of all UEs in the group.
The interface between the DC and the T-CN is a D interface, two messages are newly added to the D interface, and the DC can acquire the answering condition and the position information of the terminal. The two messages comprise a terminal call information request message and a terminal call information report message. And the terminal call information request message is sent to the T-CN by the DC, and the terminal call report message is sent to the DC by the T-CN. It should be noted that the SIP (200OK) response is a standard SIP response, and both the end-to-end call information response message and the end-to-end call information report response conform to the related IETF RFC specification.
Specifically, the terminal call information request message may take the following form:
MESSAGE SIP UEUDN/GDN @ TCN Domain name or TCNIP TCNPort SIP/2.0
Via SIP/2.0/UDP proxy server domain name or proxy server IP: port (Port)
Route: < sip proxy server domain name or proxy server IP: port >
From < sip DCUDN @ TCN Domain name or TCNIP TCNPort >; tag xxxx
Sip UEUDN/GDN @ TCN domain name or TCNIP TCNPort
Call-ID:5xTb9vxSit55XU7o0@TCFIP:TCFPort
CSeq:1MESSAGE
Max-foward:70
Ptt-Extension:pttUETkLocationConfig；ReportType＝xx
Content-Length:0
The terminal call information request MESSAGE uses the MESSAGE method of SIP, the extended parameter description in the MESSAGE is shown in table 1 below, and the terminal/group identifier is carried by the To header field.
TABLE 1 terminal Call information request message
Specifically, the terminal call information report MESSAGE adopts a MESSAGE method of SIP, and may adopt the following form:
MESSAGE SIP DCUDN @ TCN Domain name or TCNIP TCNPort SIP/2.0
Via SIP/2.0/UDP proxy server domain name or proxy server IP: port (Port)
Route: < sip proxy server domain name or proxy server IP: port >
From < sip UEUDN @ TCN domain name or TCNIP TCNPort >; tag xxxx
To: < sip: DCUDN @ TCN domain name or TCNIP: TCNPort >
Call-ID:5xTb9vxSit55XU7o0@TCFIP:TCFPort
CSeq:1MESSAGE
Max-foward:70
Ptt-Extension:pttUETkLocationReport；GDN＝xxx；ECGI＝xxx；TAI＝xxx
Content-Length:0
The extended parameter description is shown in table 2 below.
TABLE 2 terminal Call information report message
The interface between the T-CN and the UE is an NAS interface, two messages are newly added to the NAS interface, and the T-CN can acquire the answering condition and the position information of the terminal. The two messages are a terminal call information reporting control message and a terminal call information reporting message. The terminal call information reporting control message is sent to the UE by the network to instruct the UE to report the group call answering situation and the UE position information, and the terminal call information reporting message is sent to the network by the UE to send the group call answering situation and the position information of the UE to the network. Specifically, when the acquisition type field of the terminal call information reporting control message is 0, it indicates that the acquisition type is direct acquisition, when the acquisition type field of the terminal call information reporting control message is 1, it indicates that the acquisition type is periodic acquisition, and when the acquisition type field of the terminal call information reporting control message is 2, it indicates that the periodic acquisition is stopped.
The NAS message is transparently transmitted through an air interface RRC message and an S1 interface message between the base station and the cluster core network, which is not shown in the flowchart. Specifically, the call information reporting control message sent by the T-CN to the terminal is shown in table 3 below, where the Request Type is an acquisition Type, and the terminal identifier is implicitly determined by an S1 interface identifier and an air interface identifier bearing the NAS message and is not explicitly carried in the NAS interface message.
TABLE 3 terminal call information reporting control message
The terminal call information report message is shown in table 4 below, where GDN is a group identifier of a current answer group of the terminal, and the terminal is not carried if the terminal is not answering the group call; the E-UTRAN CGI is the cell identification where the terminal is located at present, and the TAI is the tracking area identification where the terminal is located at present.
TABLE 4 terminal Call information report message
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand 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 (2)
1. A method for obtaining answering information of a terminal in a broadband trunking system is characterized by comprising the following steps:
a dispatching desk sends a terminal call information request message to a cluster core network T-CN, so that the T-CN obtains answering information of the terminal according to the terminal call information request message, and the terminal call information request message comprises identification information of the terminal;
after receiving a terminal call information report message sent by the terminal, the T-CN sends the terminal call information report message to the dispatching desk, wherein the terminal call information report message comprises answering information reported by the terminal, so that the answering information of the terminal is acquired;
the answering information comprises a current answering group identifier of the terminal;
the terminal call information report message also comprises current position information of the terminal, wherein the position information comprises an ECGI of a cell where the terminal is located and/or a tracking area identifier TAI where the terminal is located;
the terminal call information request message further comprises acquisition type information, and the method further comprises the following steps:
after receiving a terminal call information reporting control message sent by the T-CN according to the terminal call information request message, the terminal reports a terminal call information report message to the T-CN according to the acquisition type information included in the terminal call information reporting control message,
the terminal comprises a first terminal and a second terminal;
wherein the acquisition type information included in the terminal call information request message includes one of the following:
acquiring in real time, periodically acquiring and stopping the periodic acquisition;
wherein the method further comprises:
if the acquisition type is real-time acquisition, the terminal immediately sends a terminal call information report message to the T-CN;
if the acquisition type is periodic acquisition, the terminal opens a periodic timer of the terminal and periodically sends a terminal call information report message to the T-CN;
if the acquisition type is to stop the periodic acquisition, the terminal closes the periodic timer of the terminal and does not send a terminal call information report message to the T-CN periodically.
2. The method for acquiring the answering information of the terminal in the broadband trunking system as claimed in claim 1, wherein the acquiring, by the T-CN, the answering information of the terminal according to the terminal call information request message comprises:
when the T-CN judges that the type of the identification information is a terminal number according to the identification information, the T-CN sends a terminal call information reporting control message to a first terminal corresponding to the terminal number, so that the first terminal reports the terminal call information reporting message to the T-CN according to the terminal call information reporting control message;
when the T-CN judges the type of the identification information to be a group number according to the identification information, the T-CN analyzes the group number to acquire the numbers of all members in the group, and sends the terminal call information reporting control message to all second terminals in the group, so that each second terminal reports a terminal call information report message to the T-CN according to the terminal call information reporting control message,
the terminal call information report message comprises answering information of the terminal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103313207A (en) * | 2012-03-16 | 2013-09-18 | 鼎桥通信技术有限公司 | Method, system and equipment for applying speaking right in digital trunking system |
| CN105282713A (en) * | 2014-07-23 | 2016-01-27 | 普天信息技术有限公司 | Group call service establishment method based on TD-LTE broadband cluster system |
| CN106304130A (en) * | 2015-05-20 | 2017-01-04 | 北京信威通信技术股份有限公司 | A kind of method of real-time monitoring calling in group system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313207A (en) * | 2012-03-16 | 2013-09-18 | 鼎桥通信技术有限公司 | Method, system and equipment for applying speaking right in digital trunking system |
| CN105282713A (en) * | 2014-07-23 | 2016-01-27 | 普天信息技术有限公司 | Group call service establishment method based on TD-LTE broadband cluster system |
| CN106304130A (en) * | 2015-05-20 | 2017-01-04 | 北京信威通信技术股份有限公司 | A kind of method of real-time monitoring calling in group system |
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