Unlock instant, AI-driven research and patent intelligence for your innovation.

A switching method and device

A terminal switching and network element technology, applied in the field of communication

Active Publication Date: 2020-09-29
HUAWEI TECH CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a handover method and device to solve the problem of how to ensure the service continuity of the terminal during the handover process when the SMF network element changes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A switching method and device
  • A switching method and device
  • A switching method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] see image 3 , is a schematic flowchart of a handover method provided in an embodiment of the present application. The method includes:

[0089]Step 301, the first SMF network element receives a first message, and assigns a first IP address to the terminal; the first message is used to indicate that the terminal needs to relocate the SMF network element;

[0090] Step 302, the first SMF network element sends the first IP address to the terminal;

[0091] Step 303, the terminal receives the first IP address, and uses the first IP address and the second IP address to monitor the downlink data; the second IP address is assigned by the second SMF to the terminal; the second SMF network element is the The source SMF network element for terminal handover;

[0092] Step 304, the first SMF network element sends the first IP address to the UPF network element;

[0093] Step 305, the UPF network element receives the first IP address, and updates the IP address after the downl...

Embodiment 2

[0109] Embodiment 2: Corresponding to the first possible implementation in Embodiment 1

[0110] Figure 5 A schematic flowchart of a switching method provided in Embodiment 2 of the present application, as shown in Figure 5 As shown, the method includes:

[0111] Step 501, the source base station initiates handover to the target base station.

[0112] Step 502, the source base station sends a handover request (handover required) message to the AMF to request handover, and the handover request message may include the identifier of the target base station.

[0113] Step 503, after the AMF determines that the SMF of the terminal needs to be changed, it selects the target SWF (T-SWF) for terminal switching, and sends a relocation request (relocation request) to the target SWF, and the relocation request includes the source SWF (S-SWF) for terminal switching. SWF) identification; wherein, the AMF can select the target SWF according to the identification of the target base stat...

Embodiment 3

[0131] Embodiment 3: Corresponding to the second possible implementation in Embodiment 1

[0132] Figure 6 A schematic flowchart of a handover method provided in Embodiment 3 of the present application, as shown in Figure 6 As shown, the method includes:

[0133] For step 601 and step 602, refer to the description of step 501 and step 502 in Embodiment 2, respectively, and details are not repeated here.

[0134] Step 603: After determining that the terminal's SMF needs to be changed, the AMF selects a target SWF for the terminal to switch to, and sends a third message to the source SWF, where the third message includes the identity of the target SWF.

[0135] Step 604, the source SWF sends a relocation request message to the target SWF according to the target SWF identifier, and the relocation request message includes the second uplink TFT and the second downlink TFT allocated by the source SWF to the terminal.

[0136] Step 605: The target SWF assigns the first IP addres...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A handover method and a device. The method comprises: when a first SMF network element assigns a first IP address to a terminal, same transmits the first IP address to the terminal and transmits the first IP address to a UPF network element; as such, for the UPF network element, when the first IP address is received, a downlink NAT mapped IP address of the terminal can be updated to the first IP address, thus making the first IP address as the destination IP address of downlink data transmitted to the terminal; for the terminal, when the first IP address is received, the first IP address can be used for monitoring the downlink data, thus ensuring that the terminal can receive the downlink data when the destination IP address of the downlink data is updated to the first IP address, and implementing terminal handover while ensuring the continuity of a service.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a handover method and device. Background technique [0002] When the terminal is moving in the connected state, the cell connected to it will change. In order to ensure continuous and uninterrupted services, the cell with the best quality will be selected to perform the handover operation. [0003] The handover in the existing LTE system includes: (1) intra-site handover: the terminal in the connected state is handed over from one cell of the serving base station to another cell; (2) inter-site handover through X2: the terminal in the connected state is handed over from one cell of the serving base station to another cell; The cell is handed over to a cell of another base station, and the serving base station and another base station are configured with an X2 interface; (3) Inter-station handover through S1: the terminal in the connected state is handed over ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04W36/00
CPCH04W36/00
Inventor 何岳金辉窦凤辉杨皓睿欧阳国威
Owner HUAWEI TECH CO LTD