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Inter-network interaction method, device and system

A network-to-network technology, applied in the field of network-to-network interaction

Active Publication Date: 2019-11-29
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a method, device and system for inter-network interaction to solve the problem of how to handle sessions in a 5G network and a 3G network

Method used

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  • Inter-network interaction method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0181] One implementation manner is that, when the terminal moves from the first network to the second network, the PS resource of the existing session can be rebuilt in the second network. Since the voice service has been switched to the CS domain of the second network, the reestablished session may be a non-voice-related session. The terminal can delete voice-related sessions.

[0182] In an implementation manner, when the first information satisfies a condition related to non-reestablishment of PS resources, the terminal determines not to request PS resources for reestablishment of the session or to initiate reestablishment of the session. In a 3G network, reestablishing a session can be represented as initiating a PDP context activation request process. In a 5G network, reestablishing a session can be expressed as initiating a PDU session context establishment request process. In a 4G network, reestablishing a session can be represented as initiating a PDN connection est...

Embodiment approach 1

[0346] This embodiment mainly describes the behavior of how the terminal decides to access the packet switched domain (PS) of the 3G network during the specific process of CS handover (such as SRVCC) from the 5G network to the 3G network. see Figure 6 ,like Figure 6 shown, including the following steps:

[0347] Step 1. The 5G radio access network unit initiates handover from the 5G network to the 3G network CS. The reason for initiation may be but not limited to one of the following: receiving a QoS flow establishment request for a voice service, a voice service exists and a handover event that moves out of the 5G network occurs.

[0348] Step 2. The network element of the 5G radio access network sends an N2 handover request message to the network element of the 5G core network. exist Figure 6 In the above, the 5G core network network unit is represented as an AMF. It should be understood that the present invention does not limit the form of expression of the 5G core n...

Embodiment approach 2

[0390] This embodiment is specifically used to describe the registration process of the terminal on the 5G network before initiating a handover from the 5G network to the 3G network. see Figure 7 ,Such as Figure 7 shown, including the following steps:

[0391] Step 1. The terminal sends an RRC message to the network element of the 5G radio access network, and the RRC message includes a registration request message.

[0392] Step 2. The 5G radio access network network unit sends an N2 interface message to the 5G core network network unit, and the N2 interface message includes a registration request message. In practical applications, the above-mentioned N2 interface message can specifically be expressed as an initial UE (UserEquipment, user equipment, ie terminal) message, in Figure 7 In the above, the 5G core network network unit is represented as an AMF. It should be understood that the present invention does not limit the form of expression of the 5G core network netwo...

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Abstract

The embodiment of the invention discloses an inter-network interaction method, device and system, relates to the technical field of communication, and can solve the problem of how to process sessionsin a 5G network and a 3G network. According to the specific scheme, the method comprises the steps of obtaining first information, wherein the first information is information related to interaction between a first network and a second network; and determining an access operation of accessing the second network according to the first information. The embodiment of the invention is applied to a scene of interaction between networks.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to a method, device and system for inter-network interaction. Background technique [0002] In the existing communication field, the fifth generation mobile communication technology (5G) network and the third generation mobile communication technology (3G) network do not support interoperability. In the initial stage of 5G network deployment, it may be hotspot coverage. In order to maintain the continuity of the voice, when the terminal moves out of the 5G network, the voice can be switched to the circuit switching (Circuit Switching, CS) domain of the 3G network. There is currently no solution to the problem of how to handle other non-speech Protocol Data Unit (Protocol Data Unit, PDU) sessions in the 5G network. Moreover, after the voice is over, if the terminal returns to the 5G network, it is not clear how to handle the session in the pac...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/14
CPCH04W36/0033H04W36/14
Inventor 柯小婉
Owner VIVO MOBILE COMM CO LTD
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