CN112312333A - Group call processing control method for railway special mobile terminal - Google Patents
Group call processing control method for railway special mobile terminal Download PDFInfo
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- CN112312333A CN112312333A CN202011203391.9A CN202011203391A CN112312333A CN 112312333 A CN112312333 A CN 112312333A CN 202011203391 A CN202011203391 A CN 202011203391A CN 112312333 A CN112312333 A CN 112312333A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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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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Abstract
The invention discloses a group call processing control method for a railway special mobile terminal, which comprises the following steps: when a user initiates a point-to-point call/group call/broadcast or answers a point-to-point call, the group call joining permission state is set to FALSE in the process that the mobile terminal receives a channel allocation message from a Um port and joins in, and in the process that the user joins in a group call service channel in a wireless resource management layer when the user joins in a group call; when a user hangs up a group call/broadcast, finishes a point-to-point call or quits a group call/broadcast, quits from traffic channel TCH, enters idle state and resides in service cell, starts up to monitor BCCH, CCCH and NCH channels, and sets the group call joining permission state as TRUE after the handheld terminal monitors a complete NCH notification period on NCH. The invention can solve the problem that the handheld station in the conversation joins in the released group calling channel, and can be compatible with the problem that the group calling notification parameter of the network on the FACCH is wrong under some conditions.
Description
Technical Field
The invention relates to the technical field of railway communication, in particular to a group call processing control method for a railway special mobile terminal.
Background
GSM-R is a railway special mobile communication system widely applied in countries all over the world at present. An important feature of GSM-R is that users can be provided with group communication services such as group call (VGCS) and broadcast (VBS). When a user initiates a new group call/broadcast call, the GSM-R network will periodically send a group call notification message on the NCH, and at the same time, will send the group call notification message to the mobile terminal supporting the group call service on the traffic channel TCH through the FACCH channel in the group call/network area. The mobile terminal can acquire the call type, the group call/broadcast ID, the group call/broadcast area ID and the corresponding channel description by analyzing the received group call notification message, and notify the user. The user on TCH channel can select whether to quit the current calling service through interface and join the new reported group calling.
At present, a FACCH group call notification message sent by a GSM-R network on a TCH traffic channel only notifies the initiation of a group call traffic call, and there is no mechanism to notify the end of a group call. Therefore, when a user selects to join a group call/broadcast after a period of time elapses after receiving a group call in a call, the group call/broadcast is already ended, so that the mobile terminal mistakenly joins the released group call channel, and the group call is exited after waiting for the timeout of the wireless link, and the whole process takes more than 20s at most, which seriously affects the user experience.
In another scenario, under the condition that partial network configuration is abnormal, parameters of a group call notification message sent on a FACCH are inconsistent with parameters of an NCH group call notification message (for example, TSC sending in descriptions of a network FACCH and a group call channel on the NCH is inconsistent, and TSC sent on the FACCH is wrong, so that a user cannot normally decode voice information after adding the group call according to FACCH notification), the user receives the group call notification message sent on the FACCH in a call state, and after the group call is selected to be added, communication is abnormal due to parameter errors.
Disclosure of Invention
The present invention aims to provide a group call processing control method for a railway-dedicated mobile terminal, so as to solve the problems proposed in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a group call processing control method for a railway special mobile terminal comprises the following steps:
s1, after the mobile terminal is started and initialized, the group calling joining permission states in the wireless resource management entity and the group calling control entity are set as TRUE;
s2, when user initiates a point-to-point call/group call/broadcast or answers a point-to-point call through user interface, in the course of adding mobile terminal receiving channel allocation (Assignment Command) message from Um port, setting the group call adding permission state as FALSE, and at the same time, sending group call adding permission state updating instruction to group call control entity;
s3, when the user joins a group call through the user interface, in the process of joining the group call service channel in the wireless resource management layer, the group call joining permission state is set as FALSE, and at the same time, the group call joining permission state updating indication is sent to the group call control entity;
s4, when the user hangs up a group calling/broadcasting, finishes a point-to-point calling or quits a group calling/broadcasting, quits from traffic channel TCH, enters idle state and resides in service cell, starts up to monitor BCCH, CCCH and NCH channels, when the hand-held terminal monitors a complete NCH notification period on NCH, sets the group calling joining permission state as TRUE, and sends group calling joining permission state update instruction to the group calling control entity;
s5, in the above steps, when the user selects to join a group call/broadcast through the user interface, the group call control entity receives the join request sent by the user interface, and then judges whether the group call join permission state is TRUE;
s6, in S5, if TRUE, the subsequent judgment and operation process of the join request are executed normally;
s7, in S5, if the group call join permission status is FALSE at this time, the group call control entity caches the join request.
Preferably, in S4, when the mobile terminal drops in the group call/broadcast/point-to-point call to trigger network re-search, and when the mobile terminal leaves the coverage of the GSM-R network to drop, the group call join permission status in both the radio resource management entity and the group call control entity is reset to TRUE.
Preferably, in S7, if the group call join permission status is FALSE, the group call control entity caches the join request, and starts the timer, and when the group call join permission status update indication is TRUE before the timer expires, the group call control entity stops the timer, fetches the cached group call/broadcast join instruction, and executes the subsequent join request judgment and operation process.
Preferably, if the timer times out, the group call control entity abandons the group call/broadcast join operation and returns join failure to the user interface.
Preferably, if the group call control entity receives the request for exiting the group call/broadcast from the user interface after starting the timer, the timer is stopped, the cached group call/broadcast join request is abandoned, join operation failure is returned to the user interface, and the operation for exiting the group call/broadcast is successful.
The invention also relates to a group call processing control device of the railway special mobile terminal, which comprises a controller and a memory, wherein the memory stores a computer program which can be executed to realize the method.
The invention also relates to a computer-readable medium, in which a computer program is stored, which computer program can be executed to implement the above-mentioned method.
The invention has at least the following beneficial effects:
the invention solves the problem that the GSM-R mobile terminal can only receive the newly initiated group call notification transmitted on FACCH in the calling and can not detect whether the group call/broadcast in the group call notification is finished or not, which causes the user to mistakenly join the finished group call; in addition, the invention can also solve the problem that the mobile terminal joins in the group calling communication abnormity when the FACCH group calling notification parameter is inconsistent with the NCH group calling notification parameter when the network configuration is wrong.
The channel description of the group call on the FACCH may have some parameters in error, because most of the cases are in idle state, the number of group call users is more than that of the group call users in call state, so the group call notification parameter error on the NCH is easy to be found, and the parameter delivery error on the network FACCH is not easy to be found. Based on the discovery, the invention is designed that when the GSM-R mobile terminal selects to join the newly received group call/broadcast in the call, the terminal needs to wait for the wireless resource management entity to receive a complete NCH notification period on the NCH channel after exiting the service channel, and then the joining operation is executed. If the group call/broadcast is finished at the joining time, the radio resource management entity will detect that the group call/broadcast is finished in the NCH notification period and report the group call/broadcast to the group call control management entity, and the group call notification management entity will report the joining failure and the group call/broadcast is finished to the user interface. If the network configuration error causes the parameter error of the group call notification on the FACCH, the wireless resource management entity acquires the group call notification message on the NCH and updates the related channel parameters in the NCH notification period, thereby avoiding the abnormal communication of the mobile terminal caused by the network parameter error and enhancing the compatibility of the GSM-R mobile terminal.
Drawings
FIG. 1 is a flow chart of a user originating or receiving a point-to-point call process of the present invention;
FIG. 2 is a process flow of the present invention for a user to join a group call or broadcast;
FIG. 3 is a process flow after a user ends a call or exits a group call, in accordance with the present invention;
fig. 4 is a process flow of the group call control entity joining the group call/broadcast process 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.
Referring to fig. 1-4, the present invention provides a technical solution: a group call processing control method for a railway special mobile terminal comprises the following steps:
s1, after the mobile terminal is started and initialized, the group calling joining permission states in the wireless resource management entity and the group calling control entity are set as TRUE, the user initiates a point-to-point calling/group calling/broadcasting or answers a point-to-point calling through the user interface;
s2, in S1, in the process of the mobile terminal receiving an Assignment Command message from the Um port, setting the group call join permission state to FALSE, and sending a group call join permission state update instruction to the group call control entity;
s3, when the user joins a group call through the user interface, in the process of joining the group call service channel in the wireless resource management layer, the group call joining permission state is set as FALSE, and at the same time, the group call joining permission state updating indication is sent to the group call control entity;
s4, when the user hangs up a group calling/broadcasting, finishes a point-to-point calling or quits a group calling/broadcasting, quits from traffic channel TCH, enters idle state and resides in service cell, starts up to monitor BCCH, CCCH and NCH channels, when the hand-held terminal monitors a complete NCH notification period on NCH, sets the group calling joining permission state as TRUE, and sends group calling joining permission state update instruction to the group calling control entity;
s5, in the above steps, when the user selects to join a group call/broadcast through the user interface, the group call control entity receives the join request sent by the user interface, and then judges whether the group call join permission state is TRUE;
s6, in S5, if TRUE, the subsequent judgment and operation process of the join request are executed normally;
s7, in S5, if the group call join permission status is FALSE at this time, the group call control entity caches the join request.
In S4, when the mobile terminal is dropped during the group call/broadcast/point-to-point call to trigger network re-search and when the mobile terminal leaves the coverage of GSM-R network and is dropped, the group call admission permission status in the radio resource management entity and the group call control entity is reset to TRUE.
In S7, if the group call join permission status is FALSE, the group call control entity caches the join request, and starts the timer, and when receiving the group call join permission status update indication TRUE before the timer expires, stops the timer, fetches the cached group call/broadcast join instruction, and executes the subsequent join request judgment and operation process.
If the timer is overtime, the group calling control entity gives up the group calling/broadcasting joining operation and returns joining failure to the user interface.
If the group calling control entity receives the request of exiting the group calling/broadcasting from the user interface after starting the timer, the timer is stopped, the cached group calling/broadcasting joining request is abandoned, the joining operation failure is returned to the user interface, and the operation of exiting the group calling/broadcasting is successful.
The method mainly relates to three logic processing entities, namely a user interface, a group calling control entity and a wireless resource management entity. And a new group call joining permission state is respectively added in the radio resource management entity and the group call control entity.
As shown in fig. 1, in the process of starting up initialization of the mobile terminal, the group call admission permission states in the radio resource management entity and the group call control entity are both set to TRUE.
When a user initiates a point-to-point call/group call/broadcast or answers a point-to-point call through a user interface, in the process that a mobile terminal receives an Assignment Command message from a Um port to join, the group call joining permission state is set to FALSE, and meanwhile, a group call joining permission state updating instruction is sent to a group call control entity.
As shown in fig. 2, when a user joins a group call through a user interface, during the process of joining the group call traffic channel in the radio resource management layer, the group call join permission status is set to FALSE, and at the same time, a group call join permission status update instruction is sent to the group call control entity.
As shown in fig. 3, when the user hangs up a group call/broadcast, ends a point-to-point call or exits a group call/broadcast, exits from the traffic channel TCH, enters an idle state and resides in the serving cell, the terminal monitors the BCCH, CCCH and NCH channels, sets the group call join permission state to TRUE after the handheld terminal monitors a complete NCH notification period on the NCH, and sends a group call join permission state update indication to the group call control entity.
When the mobile terminal is in a group calling/broadcasting/point-to-point calling and a call drop is triggered to search the network again, and when the mobile terminal leaves the GSM-R network coverage and the network drop is caused, the group calling joining permission state in the radio resource management entity and the group calling control entity is reset to TRUE.
As shown in fig. 4, when a user selects to join a group call/broadcast through a user interface, after receiving a join request sent from the user interface, the group call control entity additionally determines whether the group call join permission status is TRUE, and if so, normally executes subsequent determination and operation procedures of the join request. If the group calling joining permission state is FALSE, the group calling control entity caches the joining request, and starts a timer at the same time, and when the group calling joining permission state update indication is TRUE before the timer is overtime, the timer is stopped, the cached group calling/broadcasting joining instruction is taken out, and the subsequent joining request judgment and operation process are executed; if the timer is overtime, the group calling control entity gives up the group calling/broadcasting joining operation and returns joining failure to the user interface; if the group calling control entity receives the request of exiting the group calling/broadcasting from the user interface after starting the timer, the timer is stopped, the cached group calling/broadcasting joining request is abandoned, the joining operation failure is returned to the user interface, and the operation of exiting the group calling/broadcasting is successful.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A group call processing control method for a railway special mobile terminal is characterized by comprising the following steps:
s1, after the mobile terminal is started and initialized, the group calling joining permission states in the wireless resource management entity and the group calling control entity are set as TRUE;
s2, when the user initiates a point-to-point call/group call/broadcast or answers a point-to-point call through the user interface, in the process that the mobile terminal receives the channel allocation message from the Um port to join, the group call joining permission state is set to FALSE, and meanwhile, a group call joining permission state updating instruction is sent to the group call control entity;
s3, when a user joins a group call through the user interface, in the process of joining the group call service channel in the wireless resource management layer, setting the group call joining permission state as FALSE, and simultaneously sending a group call joining permission state updating instruction to the group call control entity;
s4, when the user hangs up a group call/broadcast, ends a point-to-point call or quits a group call/broadcast, quits from traffic channel TCH, enters idle state and resides in service cell, starts up to monitor BCCH, CCCH and NCH channels, when the hand-held terminal monitors a complete NCH notification period on NCH, sets the group call joining permission state as TRUE, and sends group call joining permission state update indication to the group call control entity.
2. The group call processing control method for railway dedicated mobile terminals according to claim 1, further comprising step S5: when the user selects to join a group call/broadcast through the user interface, the group call control entity receives the joining request sent by the user interface, and then, whether the group call joining permission state is TRUE or not is judged.
3. The group call processing control method for railway special mobile terminals according to claim 2, wherein in S5, if TRUE, the follow-up judgment and operation procedure of join request are normally executed.
4. The group call processing control method of dedicated mobile terminal for railway of claim 2, wherein in S5, if the group call join permission status is FALSE at this time, the group call control entity caches the join request.
5. The group call processing control method for railway dedicated mobile terminals according to claim 1, characterized in that: in S4, when the mobile terminal is dropped during the group call/broadcast/point-to-point call to trigger network re-search and when the mobile terminal leaves the coverage of GSM-R network and is dropped, the group call admission permission status in the radio resource management entity and the group call control entity is reset to TRUE.
6. The group call processing control method for railway dedicated mobile terminal according to claim 4, characterized in that: in S7, if the group call join permission status is FALSE, the group call control entity caches the join request, and starts the timer, and when receiving the group call join permission status update indication TRUE before the timer expires, stops the timer, fetches the cached group call/broadcast join instruction, and executes the subsequent join request judgment and operation process.
7. The group call processing control method for railway dedicated mobile terminal according to claim 6, characterized in that: if the timer is overtime, the group calling control entity gives up the group calling/broadcasting joining operation and returns joining failure to the user interface.
8. The group call processing control method for railway dedicated mobile terminal according to claim 6, characterized in that: if the group calling control entity receives the request of exiting the group calling/broadcasting from the user interface after starting the timer, the timer is stopped, the cached group calling/broadcasting joining request is abandoned, the joining operation failure is returned to the user interface, and the operation of exiting the group calling/broadcasting is successful.
9. A group call processing control device for railway special mobile terminals is characterized in that: comprising a controller, a memory, in which a computer program is stored, which computer program is executable to implement the method according to any of claims 1-8.
10. A computer-readable medium, characterized in that: stored with a computer program executable to implement the method according to any one of claims 1-8.
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