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Cell switching method, apparatus and system

A cell handover and cell technology, applied in the field of communication, can solve the problems of data transmission interruption and inability to trigger data recovery in time.

Inactive Publication Date: 2018-04-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method, device and system for cell switching, to at least solve the problem in the related art that when an error occurs in the physical layer and data cannot be sent and received during the cell switching process, the data recovery process cannot be triggered in time and the data transmission is interrupted. question

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  • Cell switching method, apparatus and system
  • Cell switching method, apparatus and system

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Embodiment 1

[0072] In this embodiment, a cell handover method is provided, figure 2 is a flow chart of a method for cell handover according to an embodiment of the present invention, such as figure 2 As shown, the process includes the following steps:

[0073] Step S202, instructing the user equipment UE to perform cell handover or auxiliary cell group change;

[0074] Step S204, instructing the UE to maintain the connection with the source cell, and instructing the UE to perform radio link detection on the handover source cell.

[0075] Through the above steps, during the mobility process of the UE, while maintaining the connection with the source cell, by starting the radio link detection, the radio link recovery can be performed quickly when a radio link problem occurs. It solves the technical problem in the related art that the data recovery process cannot be triggered in time when an error occurs in the physical layer and the data cannot be sent and received during the cell hando...

Embodiment 2

[0111]This embodiment also provides a device and system for cell handover, the device is used to implement the above embodiments and preferred implementation modes, what has already been described will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0112] Figure 4 is a structural block diagram of a device for cell handover according to an embodiment of the present invention, such as Figure 4 As shown, the source base station or main base station applied on the network side includes:

[0113] The first instructing module 40 is configured to instruct the user equipment UE to perform cell handover or assist cell group change;

[0114] The second instructing module 42 is configure...

Embodiment 3

[0143] This embodiment is an optional embodiment according to the present invention, and is used to describe this application in detail in combination with specific scenarios:

[0144] This embodiment provides a process of changing a serving base station (cell) for a UE in an LTE system, including single connection handover; dual connection handover; addition and change of a secondary base station under dual connection, and the UE still needs to maintain a period of time with the source base station The connection indicates the processing behavior of a specific UE through the network, thereby reducing the service interruption delay and packet loss of the UE.

[0145] The technical problem to be solved in this embodiment is that, in the make-before-break solution in the related art, since it is not determined that the UE will stop the detection of the physical layer wireless link after receiving the handover command, the connection between the source base station and the source ...

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Abstract

The invention provides a cell switching method, apparatus and system. The method comprises the following steps: indicating user equipment UE to perform cell switching or change an auxiliary cell group; and indicating the UE to keep a connection with a source cell, and indicating the UE to detect a wireless link of the switched source cell. By odption of the cell switching method, apparatus and system provided by the invention, the technical problem of data transmission interrupt caused by failure to trigger data restoration in time when the data cannot be received or sent because of an error of a physical layer during the cell switching process in related art is solved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a cell switching method, device and system. Background technique [0002] In related technologies, a dual connectivity (Dual Connectivity, DC) function is introduced into a Long Term Evolution (LTE) system, and the DC includes two cell groups: MCG (Master Cell Group, primary cell group) and SCG ( Secondary Cell Group, secondary cell group). The MCG includes a primary cell (Primary Cell, PCell) or additionally includes one or more secondary cells (Secondary Cell, SCell), and the SCG includes a primary secondary cell (Primary Secondary Cell, PSCell) or additionally includes one or more SCells. The base station that manages the MCG is called a master base station (Master eNB, MeNB), and the base station that manages the SCG is called a secondary base station (Secondary eNB, SeNB). [0003] The mobility process of the UE in the related art includes a handover method for maintaini...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/08H04W36/30
CPCH04W36/08H04W36/0064H04W36/00
Inventor 吴昱民
Owner ZTE CORP
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