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Group call switching method and device when terminal roams in broadband trunking system

A broadband cluster and portable terminal technology, applied in wireless communication, broadcast service distribution, network data management, etc., can solve the problem of incomplete definition of terminals, and achieve the effect of ensuring continuity, avoiding interruption of group call answering, and simplifying management.

Inactive Publication Date: 2019-12-20
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing TD-LTE broadband trunking standards have not fully defined how to switch the group call that the terminal has joined when roaming in the idle state, so as to ensure the continuity of the group call and avoid the interruption of group call reception.

Method used

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  • Group call switching method and device when terminal roams in broadband trunking system
  • Group call switching method and device when terminal roams in broadband trunking system
  • Group call switching method and device when terminal roams in broadband trunking system

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Experimental program
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Embodiment 1

[0054] see Figure 6 , Figure 6 It is a flowchart of the method provided by Embodiment 1 of the present invention. In Embodiment 1, it is assumed that the trunking service of the terminal is managed by the home domain core network.

[0055] Such as Figure 6 As shown, the process may include the following steps:

[0056] Step 601, the terminal has established a group call on the source core network before roaming, and the terminal roams to the destination core network in an idle state.

[0057] Step 602, the terminal sends a first message to the eNB of the target core network.

[0058] The first message here carries the group number of the group call that the terminal has joined in the source core network and still participates in after roaming.

[0059] As an embodiment of the present invention, the first message may preferably be a TAU Request. The present invention can extend the TAURequest to carry the group number of the group call that the terminal has joined in t...

Embodiment 2

[0115] see Figure 7 , Figure 7 It is a flow chart of the method provided by Embodiment 2 of the present invention. In Embodiment 2, it is assumed that the trunking service of the terminal is managed by the target core network.

[0116] Such as Figure 7 As shown, the process may include the following steps:

[0117] Steps 701 to 704 are similar to the above steps 601 to 604, and will not be repeated here.

[0118] Step 705: When the TCF of the destination core network determines that the terminal is not managed by the TCF, it sends a fifth message to the eHSS in the core network of the terminal's home domain, where the fifth message carries the UDN of the terminal.

[0119] As a preferred embodiment of the present invention, here, the TCF of the target core network can analyze the terminal's home domain core network and the eHSS therein through the code number.

[0120] The fifth message here is essentially used for service registration with the eHSS in the home domain ...

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Abstract

The invention provides a group calling switching method and device for a roaming terminal in a broadband cluster system. After an idle terminal roams from a source core network to a target core network, the group number of the group calling which the terminals still participate in the source core network is notified to the target core network, and the target core network notifies the group number to a group main control server of the group which the terminal belongs to. Therefore, the group calling is switched from the source core network to the target core network rapidly.

Description

technical field [0001] The present application relates to trunking communication technology, in particular to a group call switching method and device when a terminal roams in a broadband trunking system. Background technique [0002] The trunking communication system is a dedicated wireless communication system for specific industry applications developed to meet the needs of industry users for command and dispatch. The trunking communication system has a wide range of application markets in the fields of government departments, public safety, emergency communications, electric power, civil aviation, petrochemical and military. [0003] In the trunking communication system, the broadband multimedia trunking system emerges as the times require, following the demand for broadband multimedia trunking services. The TD-LTE broadband trunking system is a new generation of broadband multimedia trunking system with the fourth generation mobile communication technology TD-LTE as th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/08H04W8/18H04W36/24H04W36/38
CPCH04W4/08H04W8/186H04W36/24H04W36/385
Inventor 周波
Owner POTEVIO INFORMATION TECH CO LTD