CN112333696A - 5G-R function addressing method - Google Patents

Abstract

The invention provides a 5G-R function addressing method, which follows the calling flow and dialing mode of the original GSM-R function number, increases the function of analyzing the number section of a 5G-R terminal, realizes the function number point calling based on a 5G-R network and the function number calling based on position addressing, has the minimum influence on the current network service, is convenient to implement in engineering, conforms to the original management and dialing habits, is relatively independent of an MCX system, does not influence the evolution of subsequent networks and services, and is a reasonable transition scheme suitable for the coexistence period of double networks.

Description

5G-R function addressing method

Technical Field

The invention relates to the technical field of 5G communication, in particular to a 5G-R function addressing method.

Background

The 5G-R communication system is a next generation railway mobile communication system based on 5G, the 5G-R communication system adopts MCX to carry railway customized services, the FRMCS planning is not tested by the bureau of experiments until 2022/2023, protocol standards such as related function alias interoperation with GSM-R and multicast mode are planned under 3GPP R18, the current Chinese railway plan is 1 to 2 years earlier than the FRMCS, and various services carried by the original GSM-R are urgently needed to be realized under the bureau of experiments during the experiment period.

Functional addressing means that users can be addressed by the functional role they are currently taking, rather than the number of the terminal device they are using. The existing GSM-R communication system adopts a 4-bit short number location addressing mode, and the processing flow is as shown in fig. 1, after receiving cdpa (called party number), firstly, the length of the called party number is determined, if the length is not 4, the call is normally made, if the number length is 4, the CGI is received, whether the query data is a new cdpa is determined, if the length is new, the cdpa is recorded, and if the length is not, an error is reported.

Disclosure of Invention

The invention aims to solve the problems of the prior art, provides a 5G-R function addressing method, which follows the original GSM-R function number calling flow and dialing mode, realizes the function number point calling based on a 5G intelligent network and the function number calling based on position addressing, has the minimum influence on the current network service, is convenient to implement in engineering, conforms to the original management and dialing habit, is relatively independent from an MCX system, does not influence the subsequent network and the service evolution, and is a reasonable transition scheme suitable for the coexistence period of double networks.

The invention comprises the following steps:

1) judging whether the called party number is a function number service access code, if not, carrying out normal VONR flow, and if so, entering the step 2);

2) judging whether the called party number is a group calling broadcasting service, if so, releasing the call, and if not, entering the step 3);

3) judging whether the called number is addressed by a 4-digit short number position, if not, analyzing and processing by an FFN database in an IM-SSF-to-5G intelligent network, and if so, entering a step 4);

4) judging whether the called number has the function number matching of the corresponding position through the MO-LR process, if not, releasing the call, if so, inquiring the called number through an FFA database in a GSM-R network, and transferring IM-MGW to the GSM-R network for paging.

Further improved, the specific process of the MO-LR flow in the step 4) is as follows:

4.1) the UE module initiates a service request to the NG-RAN module and the AMF module;

4.2) uplink NAS transmitting MO-LR request between the UE module and the AMF module;

4.3) the AMF module selects LMF;

4.4) the AMF module carries out Nlmf position decision on the LMF module;

4.5) positioning the UE between the UE module and the LMF module;

4.6) the LMF module carries out Nlmf position response on the AMF module;

4.7) the AMF module makes an Ngmlc position updating request to the VGMLC module;

4.8) the VGMLC module makes an Ngmlc position update request to the HGMLC module;

4.9) the HGMLC module provides position information for the external Client module, the VGMLC module sends a position Ngmlc position updating notice to the NEF module, and a Nnef position updating notice is sent between the NEF module and the AF module;

4.10) the external Client module confirms the position information to the HGMLC module, the NEF module sends a Nnef position updating notification response to the AF module, and the NEF module sends a Ngmlc position updating notification response to the HGMLC module;

4.11) performing Ngmlc position updating notification response between the HGMLC module and the VGMLC module;

4.12) the VGMLC module sends Ngmlc position update notification response to the AMF module;

4.13) downlink NAS transmitting MO-LR response between the UE module and the AMF module;

further improved, the FFA database in the GSM-R network is synchronous with the FFN database in the 5G intelligent network, and the dispatching desk corresponding to each addressing position and the number list of the station attendant are maintained.

The invention has the beneficial effects that: the method is characterized in that the original GSM-R function number calling flow and dialing mode are followed, the function number point calling based on the 5G intelligent network and the function number calling based on the position addressing are realized, the influence on the current network service is minimum, the implementation is convenient in engineering, the method also conforms to the original management and dialing habit, is relatively independent of the MCX system, does not influence the subsequent network and the service evolution, and is a reasonable transition scheme suitable for the coexistence period of the two networks.

Drawings

Fig. 1 is a schematic diagram of the conventional GSM-R function addressing process.

FIG. 2 is a functional addressing flow diagram according to the present invention.

FIG. 3 is a schematic view of the MO-LR flow.

Detailed Description

The invention will be further explained with reference to the drawings.

The process of the invention is shown in figure 2 and comprises the following steps:

1) judging whether the called party number is a function number service access code, if not, carrying out normal VONR flow, and if so, entering the step 2);

2) judging whether the called party number is a group calling broadcasting service, if so, releasing the call, and if not, entering the step 3);

3) judging whether the called number is addressed by a 4-digit short number position, if not, analyzing and processing by an FFN database in an IM-SSF-to-5G intelligent network, and if so, entering a step 4);

4) judging whether the called number has the function number matching of the corresponding position through the MO-LR process, if not, releasing the call, if so, inquiring the called number through an FFA database in a GSM-R network, and transferring IM-MGW to the GSM-R network for paging.

The MO-LR process described in step 4) is shown in fig. 3, and the specific process is as follows:

4.1) the UE module initiates a service request to the NG-RAN module and the AMF module;

4.2) uplink NAS transmitting MO-LR request between the UE module and the AMF module;

4.3) the AMF module selects LMF;

4.4) the AMF module carries out Nlmf position decision on the LMF module;

4.5) positioning the UE between the UE module and the LMF module;

4.6) the LMF module carries out Nlmf position response on the AMF module;

4.7) the AMF module makes an Ngmlc position updating request to the VGMLC module;

4.8) the VGMLC module makes an Ngmlc position update request to the HGMLC module;

4.9) the HGMLC module provides position information for the external Client module, the VGMLC module sends a position Ngmlc position updating notice to the NEF module, and a Nnef position updating notice is sent between the NEF module and the AF module;

4.10) the external Client module confirms the position information to the HGMLC module, the NEF module sends a Nnef position updating notification response to the AF module, and the NEF module sends a Ngmlc position updating notification response to the HGMLC module;

4.11) performing Ngmlc position updating notification response between the HGMLC module and the VGMLC module;

4.12) the VGMLC module sends Ngmlc position update notification response to the AMF module;

4.13) downlink NAS transmitting MO-LR response between the UE module and the AMF module;

further improved, the FFA database in the GSM-R network is synchronous with the FFN database in the 5G intelligent network, and the dispatching desk corresponding to each addressing position and the number list of the station attendant are maintained.

The abbreviations herein are all as follows:

5G-R the next generation railway mobile communication system based on 5G;

GSM-R railway mobile communication system;

MCX Session Critical Communication Key Business Communication;

FFN Follow me Function Node, Follow me Function Node;

FFA Follow me function alias, Follow me function name;

AMF Access and Mobility Management Function;

an LMF Location Management Function;

vGMLC visit Gateway Mobile Location Centre visits the Gateway Mobile Location Centre;

HGMLC Home Gateway Mobile Location Centre belongs to the Gateway Mobile Location center;

the NEF Network expose Function Network open Function;

an AF application function;

MO-LR Mobile ordered Location Request Mobile originating Location query;

VONR Voice over new radio 5G Voice;

IM-SSF IP Multimedia Service Switching Function;

a Nlmf N Location Management Function reference point;

ngmlc N Gateway Mobile Location Centre Gateway Mobile Location Centre reference;

an open Function reference point for the Nnef N Network expose Function Network.

While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (3)

1. A 5G-R function addressing method, characterized by the steps of:

1) judging whether the called party number is a function number service access code, if not, carrying out normal VONR flow, and if so, entering the step 2);

2) judging whether the called party number is a group calling broadcasting service, if so, releasing the call, and if not, entering the step 3);

3) judging whether the called number is addressed by a 4-digit short number position, if not, analyzing and processing by an FFN database in an IM-SSF-to-5G intelligent network, and if so, entering a step 4);

4) judging whether the called number has the function number matching of the corresponding position through the MO-LR process, if not, releasing the call, if so, inquiring the called number through an FFA database in a GSM-R network, and transferring IM-MGW to the GSM-R network for paging.

2. The 5G-R functional addressing method according to claim 1, characterized in that: the specific process of the MO-LR flow in the step 4) is as follows:

4.1) the UE module initiates a service request to the NG-RAN module and the AMF module;

4.2) uplink NAS transmitting MO-LR request between the UE module and the AMF module;

4.3) the AMF module selects LMF;

4.4) the AMF module carries out Nlmf position decision on the LMF module;

4.5) positioning the UE between the UE module and the LMF module;

4.6) the LMF module carries out Nlmf position response on the AMF module;

4.7) the AMF module makes an Ngmlc position updating request to the VGMLC module;

4.8) the VGMLC module makes an Ngmlc position update request to the HGMLC module;

4.9) the HGMLC module provides position information for the external Client module, the VGMLC module sends a position Ngmlc position updating notice to the NEF module, and a Nnef position updating notice is sent between the NEF module and the AF module;

4.10) the external Client module confirms the position information to the HGMLC module, the NEF module sends a Nnef position updating notification response to the AF module, and the NEF module sends a Ngmlc position updating notification response to the HGMLC module;

4.11) performing Ngmlc position updating notification response between the HGMLC module and the VGMLC module;

4.12) the VGMLC module sends Ngmlc position update notification response to the AMF module;

4.13) the downlink NAS between the UE module and the AMF module transmits MO-LR response.

3. The 5G-R functional addressing method according to claim 1, characterized in that: the FFA database in the GSM-R network is synchronous with the FFN database in the 5G intelligent network.

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