CN113316094B - Method and system for sending cluster group short data - Google Patents
Method and system for sending cluster group short data Download PDFInfo
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- CN113316094B CN113316094B CN202010122089.4A CN202010122089A CN113316094B CN 113316094 B CN113316094 B CN 113316094B CN 202010122089 A CN202010122089 A CN 202010122089A CN 113316094 B CN113316094 B CN 113316094B
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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
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
Abstract
The application discloses a method and a system for sending cluster group short data, wherein the method comprises the following steps: under the pilot frequency networking, when a base station receives a cluster group short data message, if a corresponding group is not established locally, a corresponding temporary group is established, and identification information of the temporary group and cluster group short data indication information are notified to a terminal; the terminal determines whether to receive the corresponding cluster group short data according to the notification, and if so, triggers and monitors a cluster control channel TCCH; the base station issues the GAP configuration of the temporary group to the terminal through the TCCH; the terminal sets local GAP configuration according to the group GAP configuration received on the TCCH, and triggers the base station to correspondingly update the user GAP configuration corresponding to the terminal; and the base station transmits the cluster group short data in the cluster group short data message to the terminal through the TCCH according to the group GAP configuration. By applying the technical scheme disclosed by the application, the loss of the cluster short data under the pilot frequency networking can be avoided.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and a system for sending short data in a cluster group.
Background
In the existing B-TrunC TS 02.004 protocol, it is described that the group GAP (GAP) configuration under the inter-frequency networking is performed in the group call configuration (GroupCallConfig) by using the Information Element (IE): groupmeas gapconfig is notified to the terminal. Meanwhile, in section B-Trunc TS 02.002 protocol 8.10, a cluster group short data flow is described. As shown in fig. 1, in the TRUNKING group short data flow, when a core network issues a TRUNKING group short data MESSAGE (trunk MESSAGE TRANSPORT) to a base station, if the base station does not have the group, a temporary group is established, a TRUNKING Paging (TRUNKING Paging) MESSAGE is sent to a terminal, identification information of the temporary group is sent to the terminal, and a non-access stratum (NAS) MESSAGE is directly issued through a TRUNKING Control Channel (TCCH) to broadcast short data to all monitoring terminals.
The inventor discovers that in the process of implementing the invention: the existing cluster group short data flow has the problem of short data loss. After the research and analysis of the existing scheme, the inventor finds out that the reasons for the problems are as follows:
according to the existing B-TrunC protocol, when a multicast short message is sent to a base station, if the base station does not establish a group, the group is temporarily established, and NAS messages are directly sent through a TCCH to broadcast short data to all monitoring terminals without sending a GroupCallConfig message, that is, a network side does not configure the short data to the terminals through a GroupCallConfig message sending group GAP when sending the short data. However, the way that the terminal is triggered to perform GAP measurement is not limited to the GroupCallConfig message, and when the user moves to the edge of the cell, the network side will also trigger the corresponding terminal to perform GAP measurement, so that in the inter-frequency networking, if the monitoring terminal receives the TrunkingPaging message and is just triggered to start GAP measurement, the monitoring terminal will probably not acquire the NAS message carrying the short data of the trunking group, thereby causing the short data loss of the trunking group.
Disclosure of Invention
In view of this, the present invention mainly aims to provide a method and a system for sending trunking group short data, which can avoid the loss of trunking group short data in inter-frequency networking.
In order to achieve the above purpose, the embodiment of the present invention provides a technical solution:
a method for sending cluster group short data comprises the following steps:
under the pilot frequency networking, when a base station receives a cluster group short data message, if a corresponding group is not established locally, a corresponding temporary group is established, and identification information of the temporary group and cluster group short data indication information are notified to a corresponding terminal; the terminal determines whether to receive corresponding cluster group short data according to the notification, and if so, triggers and monitors a cluster control channel TCCH;
the base station issues the GAP configuration of the temporary group to the terminal through the TCCH;
the terminal sets local GAP configuration according to the group GAP configuration received on the TCCH, and triggers the base station to correspondingly update the user GAP configuration corresponding to the terminal;
and the base station transmits the cluster group short data in the cluster group short data message to the terminal through the TCCH according to the group GAP configuration.
Preferably, the notifying the corresponding terminal of the identification information of the temporary group and the group short data indication information includes:
and the base station transmits a trunking paging (TrunkingPaging) message to the terminal in the temporary group, wherein the TrunkingPaging message carries the identification information of the temporary group and the trunking short data indication information.
Preferably, the issuing, by the base station, the group GAP configuration of the temporary group to the terminal through the TCCH includes:
and the base station issues N times of GAP configuration of the temporary group to the terminal, wherein N is more than 1.
Preferably, the base station issues a GAP configuration of the temporary group to the terminal according to a preset sending interval t, where t is greater than or equal to 0ms.
Preferably, the base station issues the group GAP configuration to the terminal by using a group call configuration group call config message.
Preferably, the triggering the base station to correspondingly update the user GAP configuration corresponding to the terminal includes:
and the terminal judges whether the terminal is in a connection state currently, if so, the group GAP configuration is reported to the base station as local GAP configuration, and the base station updates the user GAP configuration corresponding to the terminal stored by the base station into the group GAP configuration according to the report.
Preferably, the terminal reports the group GAP configuration as a local GAP configuration to the base station through an MAC layer control cell (G-RNTI MAC CE) carrying a group radio network temporary identifier.
Preferably, the method further comprises: after receiving the cluster group short data, the terminal actively releases the local resources of the temporary group, or releases the local resources of the temporary group according to the group release notification of the base station; and the group release notification is sent to the terminal after the base station completes the sending of the cluster group short data.
A system for sending cluster group short data, comprising:
the base station, under the pilot frequency network, when receiving the short data message of the cluster group, if do not set up the corresponding group locally, set up the corresponding temporary group, and notify the corresponding terminal station of identification information and cluster group short data indicating information of the said temporary group;
the terminal determines whether the corresponding cluster group short data needs to be received or not according to the notification, and triggers and monitors a cluster control channel TCCH if the cluster group short data needs to be received;
the base station issues a GAP configuration of the temporary group to the terminal through the TCCH;
the terminal sets local GAP configuration according to the received group GAP configuration on the TCCH, and triggers the base station to correspondingly update the user GAP configuration corresponding to the terminal;
and the base station transmits the cluster group short data in the cluster group short data message to the terminal through the TCCH according to the group GAP configuration.
Preferably, the base station is specifically configured to notify the corresponding terminal of the identification information of the temporary group and the group short data indication information, and includes:
and sending a trunking paging message to a terminal in the temporary group, wherein the trunking paging message carries the identification information of the temporary group and the group short data indication information.
Preferably, the issuing, by the base station, the group GAP configuration of the temporary group to the terminal through the TCCH includes:
and the base station issues the group GAP configuration of the temporary group for N times to the terminal, wherein N is greater than 1.
Preferably, the base station is specifically configured to issue a group GAP configuration of the temporary group to the terminal according to a preset sending interval t, where t is greater than or equal to 0ms.
Preferably, the base station is specifically configured to issue the group GAP configuration to the terminal by using a group call configuration GroupCallConfig message.
Preferably, the triggering, by the terminal, the base station to correspondingly update the user GAP configuration corresponding to the terminal includes:
and judging whether the current state is in a connection state, if so, reporting the group GAP configuration as a local GAP configuration to the base station, and updating the user GAP configuration corresponding to the terminal stored by the base station into the group GAP configuration by the base station according to the report.
Preferably, the terminal is specifically configured to report the group GAP configuration as a local GAP configuration to the base station through an MAC layer control cell G-RNTI MAC CE carrying a group radio network temporary identifier.
Preferably, the terminal is further configured to actively release the local resource of the temporary group after receiving the cluster group short data, or release the local resource of the temporary group according to the group release notification of the base station; and the group release notification is sent to the terminal after the base station completes the sending of the cluster group short data.
It can be seen from the above technical solutions that, in the sending method and system for cluster group short data provided by the present application, after notifying the corresponding terminal of the identification information of the temporary group and the indication information of the cluster group short data, the base station further needs to issue the configuration of the GAP of the temporary group to the terminal through the TCCH, and accordingly, the network side will also issue the cluster group short data to the terminal according to the issued configuration of the GAP of the group.
Drawings
Fig. 1 is a schematic diagram illustrating a conventional short data transmission process of a cluster group;
fig. 2 is a schematic main flow chart of a cluster group short data transmission method according to the present invention;
fig. 3 is a schematic diagram illustrating a specific flow of sending a group of short data implemented based on an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 2 is a schematic flowchart of a method according to an embodiment of the present invention, and as shown in fig. 2, the method for sending short data in a cluster group implemented according to the embodiment mainly includes:
In this step, when the base station issues the identification information of the newly established temporary group, it needs to issue the indication information of the group short data at the same time to notify the terminal that the group short data is to be transmitted.
Here, the method for determining whether the corresponding cluster group short data needs to be received by the terminal is the same as that of the existing system, and is not described herein again.
Preferably, in order to improve the compatibility of this embodiment, the base station may notify the identifier information of the temporary group and the group short data indication information to the corresponding terminal by using an existing trunking paging (trunking paging) message, which is specifically as follows:
and the base station transmits a trunk paging message to the terminal in the temporary group, wherein the trunk paging message carries the identification information of the temporary group and the indication information of the collective group short data.
The difference between this step and the existing short data sending process of the cluster group is that the base station needs to issue the group GAP configuration of the newly created temporary group, so that the short data of the cluster group can be issued to the user according to the group GAP configuration newly configured by the base station when the short data of the cluster group is issued, and no time conflict occurs between the user receiving and collecting the short data of the cluster group and the user starting GAP measurement, thereby effectively avoiding the short data loss problem of the cluster group caused by the occurrence of the conflict in the inter-frequency network.
Preferably, in this step, in order to prevent the issuing of the group GAP configuration from falling into the GAP measurement period of the terminal and ensure that the terminal can receive the group GAP configuration issued by the base station, the base station may issue multiple groups of GAP configurations, which is specifically as follows:
and the base station issues N times of GAP configuration of the temporary group to the terminal, wherein N is more than 1.
The number of times N of issuance may be set by a person skilled in the art in advance according to an actual application scenario, as long as it is ensured that the terminal can receive the configuration of the group GAP issued by the base station.
Preferably, in order to further improve the reliability of the terminal receiving the group GAP configuration, the base station may continuously transmit the group GAP configuration of the temporary group for multiple times according to a fixed transmission interval, which is specifically as follows:
and the base station issues the GAP configuration of the temporary group to the terminal according to a preset sending interval t, wherein t is more than or equal to 0ms.
For the t, a person skilled in the art can set the t according to actual needs, for example, the t may be 6ms, but is not limited thereto.
Preferably, in order to improve the compatibility between the present embodiment and the existing system, the base station may issue the group GAP configuration to the terminal by using an existing group call configuration (GroupCallConfig) message. Preferably, at this time, in order to reduce transmission overhead, the GroupCallConfig message does not need to carry the TCCH configuration.
In this step, the terminal sets the local GAP configuration to be the same as the currently received group GAP configuration.
It should be noted that, in the existing system, two GAP configurations are stored in the base station, one is a group GAP configuration, and the other is a user GAP configuration. In this step, considering that the network side stores the user GAP configuration corresponding to the terminal when the terminal is in a connected state, and the GAP configuration of the terminal is changed at this time, it is also necessary to trigger the base station to update the corresponding user GAP configuration, so as to ensure consistency between the user GAP configurations of the terminal and the network side.
Preferably, in this step, the base station may be triggered to perform corresponding update on the user GAP configuration corresponding to the terminal by using the following method:
and the terminal judges whether the terminal is in a connection state currently, if so, the group GAP configuration is reported to the base station as the local GAP configuration, and the base station updates the user GAP configuration corresponding to the terminal stored by the base station into the group GAP configuration according to the report.
Preferably, in the method, the terminal may report the group GAP configuration as a local GAP configuration to the base station through an MAC layer control cell (G-RNTI MAC CE) carrying a group radio network temporary identifier in an existing protocol.
And step 204, the base station sends the cluster group short data in the cluster group short data message to the terminal through the TCCH according to the group GAP configuration.
It should be noted that, in practical application, after the terminal completes the local GAP configuration in step 203, the base station needs to wait for a certain time interval after issuing the group GAP configuration of the temporary group in step 202, and then executes the step again to ensure that the terminal completes the setting of the local GAP configuration when executing the step. Specifically, those skilled in the art may set the time interval according to actual needs, as long as the time interval is greater than the time from the time when the base station issues the group GAP configuration to the time when the terminal completes the local GAP configuration.
The specific implementation method for issuing the cluster group short data in this step is known by those skilled in the art, and is not described herein again.
As described above, since the cluster group short data is issued in the TCCH according to the group GAP configuration configured for the terminal, the base station inevitably avoids the GAP measurement period of the terminal according to the group GAP configuration when issuing the cluster group short data, so as to ensure that the terminal cannot receive the cluster group short data because the terminal is preparing GAP measurement.
Preferably, in order to enable the terminal to release the local resource (such as a channel) of the temporary group in time, after the terminal completes receiving the short data of the cluster group, the terminal may actively release the local resource of the temporary group.
Considering that the terminal may not receive the short data of the trunking group when the channel condition becomes bad, in this case, the terminal may not trigger the resource release of the temporary group as early as possible because it cannot receive the short data of the trunking group. Based on this, in order to further improve the resource utilization rate, so that the terminal can release the local resource of the temporary group as early as possible, after the base station sends the cluster group short data, the base station may notify the terminal to release the local resource of the temporary group. Specifically, the terminal may be notified of releasing the local resource of the temporary group through a GroupCallRel message.
Fig. 3 is a schematic diagram showing a specific process for sending cluster short data implemented based on the above embodiment, and as shown in fig. 3, different from the existing process for sending cluster short data, the method is that after sending a cluster paging message to a terminal, a base station issues a group GAP configuration to the terminal through a group call configuration (GroupCallConfig) message, and the terminal sets a group GAP configuration locally according to the group GAP configuration, and if the terminal is in a connected state, the base station needs to trigger the base station to update a corresponding user GAP configuration, so that the base station can issue the cluster short data based on the newly configured group GAP configuration, and thus the issuance of the cluster short data and the GAP measurement of the terminal do not conflict in time, and the terminal can be ensured to receive the cluster short data.
Corresponding to the above method embodiment, the present application also provides a system for sending short data of a cluster group, where the system mainly includes:
a base station, in a pilot frequency networking, when receiving a cluster group short data message, if a corresponding group is not established locally, establishing a corresponding temporary group, and notifying identification information of the temporary group and cluster group short data indication information to a corresponding terminal;
the terminal determines whether corresponding cluster group short data needs to be received or not according to the notification, and triggers and monitors a cluster control channel TCCH if the corresponding cluster group short data needs to be received;
the base station issues the GAP configuration of the temporary group to the terminal through the TCCH;
the terminal sets local GAP configuration according to the group GAP configuration received on the TCCH, and triggers the base station to correspondingly update the user GAP configuration corresponding to the terminal;
and the base station transmits the cluster group short data in the cluster group short data message to the terminal through the TCCH according to the group GAP configuration.
Preferably, the base station is specifically configured to notify the corresponding terminal of the identification information of the temporary group and the group short data indication information, and includes:
and sending a trunking paging message to a terminal in the temporary group, wherein the trunking paging message carries the identification information of the temporary group and the group short data indication information.
Preferably, the step of the base station issuing the GAP configuration of the temporary group to the terminal through the TCCH includes:
and the base station issues N times of GAP configuration of the temporary group to the terminal, wherein N is more than 1.
Preferably, the base station is specifically configured to issue, to the terminal, a GAP configuration of a group GAP of the temporary group according to a preset sending interval t, where t is greater than or equal to 0ms.
Preferably, the base station is specifically configured to issue the group GAP configuration to the terminal by using a group call configuration GroupCallConfig message.
Preferably, the triggering, by the terminal, the base station to correspondingly update the user GAP configuration corresponding to the terminal includes:
and judging whether the current state is in a connection state, if so, reporting the group GAP configuration as local GAP configuration to the base station, and updating the user GAP configuration corresponding to the terminal stored by the base station into the group GAP configuration by the base station according to the report.
Preferably, the terminal is specifically configured to report the group GAP configuration as a local GAP configuration to the base station through an MAC layer control cell G-RNTI MAC CE carrying a group radio network temporary identifier.
Preferably, the terminal is further configured to actively release the local resource of the temporary group after receiving the cluster group short data, or release the local resource of the temporary group according to the group release notification of the base station.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (14)
1. A method for sending cluster group short data is characterized by comprising the following steps:
under the pilot frequency networking, when a base station receives a cluster group short data message, if a corresponding group is not established locally, a corresponding temporary group is established, and identification information of the temporary group and cluster group short data indication information are notified to a corresponding terminal; the terminal determines whether to receive corresponding cluster group short data according to the notification, and if so, triggers and monitors a cluster control channel TCCH;
the base station transmits the GAP configuration of the temporary group to the terminal through the TCCH;
the terminal sets local GAP configuration according to the group GAP configuration received on the TCCH, and triggers the base station to correspondingly update the user GAP configuration corresponding to the terminal;
the base station transmits the cluster group short data in the cluster group short data message to the terminal through the TCCH according to the group GAP configuration;
wherein the base station issuing the GAP configuration of the temporary group to the terminal through the TCCH includes:
and the base station issues N times of GAP configuration of the temporary group to the terminal, wherein N is more than 1.
2. The method of claim 1, wherein: the notifying the identification information of the temporary group and the group short data indication information to the corresponding terminal includes:
and the base station transmits a trunking paging message to the terminal in the temporary group, wherein the trunking paging message carries the identification information of the temporary group and the group short data indication information.
3. The method of claim 1, wherein: and the base station issues a group GAP configuration of the temporary group to the terminal according to a preset sending interval t, wherein t is more than or equal to 0ms.
4. A method according to any of claims 1 to 3, characterized by: and the base station uses a group call configuration group Call Config message to issue the group GAP configuration to the terminal.
5. The method of claim 1, wherein: the triggering the base station to correspondingly update the user GAP configuration corresponding to the terminal comprises:
and the terminal judges whether the terminal is in a connection state currently, if so, the group GAP configuration is reported to the base station as the local GAP configuration, and the base station updates the user GAP configuration corresponding to the terminal stored by the base station into the group GAP configuration according to the report.
6. The method of claim 5, wherein: and the terminal reports the group GAP configuration as local GAP configuration to the base station through an MAC layer control cell G-RNTI MAC CE carrying the group radio network temporary identifier.
7. The method of claim 1, wherein: the method further comprises the following steps: after the terminal receives the cluster group short data, the local resources of the temporary group are actively released; or releasing the local resources of the temporary group according to a group release notification of the base station, wherein the group release notification is sent to the terminal after the base station completes the sending of the cluster group short data.
8. A system for sending short data in a cluster group, comprising:
a base station, in a pilot frequency networking, when receiving a cluster group short data message, if a corresponding group is not established locally, establishing a corresponding temporary group, and notifying identification information of the temporary group and cluster group short data indication information to a corresponding terminal;
the terminal determines whether the corresponding cluster group short data needs to be received or not according to the notification, and triggers and monitors a cluster control channel TCCH if the cluster group short data needs to be received;
the base station issues the configuration of the GAP of the temporary group to the terminal through the TCCH, and the configuration comprises the following steps: issuing group GAP configuration of the temporary group to the terminal for N times, wherein N is more than 1;
the terminal sets local GAP configuration according to the received group GAP configuration on the TCCH, and triggers the base station to correspondingly update the user GAP configuration corresponding to the terminal;
and the base station transmits the cluster group short data in the cluster group short data message to the terminal through the TCCH according to the group GAP configuration.
9. The system of claim 8, wherein: the base station is specifically configured to notify the corresponding terminal of the identification information of the temporary group and the group short data indication information, and includes:
and sending a trunking paging message to a terminal in the temporary group, wherein the trunking paging message carries the identification information of the temporary group and the group short data indication information.
10. The system of claim 8, wherein: the base station is specifically configured to issue a GAP configuration GAP of the temporary group to the terminal according to a preset sending interval t, where t is greater than or equal to 0ms.
11. A system according to any one of claims 8 to 10, wherein: the base station is specifically configured to utilize a group call configuration GroupCallConfig message to issue the group GAP configuration to the terminal.
12. The system of claim 8, wherein: the terminal is specifically configured to trigger the base station to perform corresponding update on a user GAP configuration corresponding to the terminal, where the update includes:
and judging whether the current state is in a connection state, if so, reporting the group GAP configuration as local GAP configuration to the base station, and updating the user GAP configuration corresponding to the terminal stored by the base station into the group GAP configuration by the base station according to the report.
13. The system of claim 12, wherein: the terminal is specifically configured to report the group GAP configuration as a local GAP configuration to the base station through an MAC layer control cell G-RNTI MAC CE carrying a group radio network temporary identifier.
14. The system of claim 8, wherein: the terminal is further configured to actively release the local resource of the temporary group after receiving the cluster group short data, or release the local resource of the temporary group according to a group release notification of the base station, where the group release notification is sent to the terminal after the base station completes the sending of the cluster group short data.
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