Switchover method and terminal

A terminal and handover process technology, which is applied in the field of communication, can solve the problems of long handover interruption time, long occupation time, and affecting the normal business of the terminal, so as to eliminate the interruption time and improve the service experience.

Active Publication Date: 2011-07-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a handover solution to at least solve the problem in the related art that the random access process takes a long time, which leads to a long handover interruption time and thus affects the normal service of the terminal

Method used

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Examples

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example 1

[0071] Figure 9 It is a schematic diagram of a preferred example 1 according to an embodiment of the present invention, such as Figure 9 As shown, cell 1 is an LTE cell, and the supported component carrier is CC1, which is located in frequency band 1. Cell 2 is an LTE cell and is an adjacent cell of Cell 1. The component carrier supported by Cell 2 is CC2, which is located in frequency band 1. The sending device and receiving device of the UE are a set of baseband devices, a single frequency band, the bandwidth is less than 20MHz, there is a first data communication module, plus a RACH module, which has its corresponding PHY layer. Cell 1 belongs to base station 1, and cell 2 belongs to base station 2.

[0072] Figure 10 It is a flow chart of preferred example 1 according to the embodiment of the present invention, combined below Figure 10 Describe the flow of this example.

[0073] Currently the UE is in a connected state in cell 1. The network side sends the measur...

example 2

[0081] Figure 11 It is a schematic diagram of the preferred example 2 according to the embodiment of the present invention, such as Figure 11 As shown, cell 1 is an LTE cell, and the supported component carrier is CC1, which is located in frequency band 1. Cell 2 is an LTE-A cell and is an adjacent cell of Cell 1. Cell 2 supports the aggregation of two component carriers, CC3 and CC4. These two component carriers are located in frequency band 1 and are continuous. The UE's sending device and receiving device are a set of baseband devices, a single frequency band, a bandwidth of 40MHz, a first data communication module, and an RACH module, which has its corresponding PHY layer. Cell 1 belongs to base station 1, and cell 2 belongs to base station 2.

[0082] Currently, the UE is in a connected state in cell 1, and the first data communication module is responsible for data communication with cell 1 on CC1. The network side issues the measurement task of the trigger event (A...

example 3

[0090] Figure 12 It is a schematic diagram of the third preferred example according to the embodiment of the present invention, as Figure 12 As shown, cell 1 is an LTE-A cell, and supports aggregation of two component carriers, CC1 and CC2, both of which are located in frequency band 1, and CC1 and CC2 are discontinuous. Cell 2 is an LTE-A cell and is an adjacent cell of Cell 1. Cell 2 supports the aggregation of three component carriers, CC3, CC4, and CC5. CC3 and CC4 are located in frequency band 2 and are discontinuous, and CC5 is located in frequency band 3. The sending device and the receiving device of the UE are three sets of baseband devices and three frequency bands, and the bandwidth of each frequency band is less than 20MHz, that is, the UE has three first data communication modules. Both cell 1 and cell 2 belong to base station 1 .

[0091] Figure 13 It is the flow chart of the preferred example 3 according to the embodiment of the present invention, combined...

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Abstract

The invention discloses a switchover method and a terminal. The switchover method comprises the steps: the terminal receives a switchover command, wherein the switchover command is used for indicating the terminal to be switched to a target cell; and the terminal executes a switchover process to the target cell and maintains data communication with a source cell till the switchover process is confirmed to be successful. The switchover method and the terminal, provided by the invention, can be used for shortening and even eliminating interruption time of switchover in mobile management to achieve the purpose of seamless switchover and improve the service experience of a user.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a handover method and a terminal. Background technique [0002] figure 1 It is a schematic diagram of a protocol stack between a user equipment or a terminal (User Equipment, referred to as UE) and a base station (eNodeB, referred to as eNB) according to related technologies, as shown in figure 1 As shown, the protocol stack of the interface between the UE and the eNB in ​​the Long Term Evolution system (LTE for short) is divided into the following protocol layers from bottom to top: physical layer (Physical layer, PHY for short), media access control layer (Media Access Control, referred to as MAC), radio link control layer (Radio Link Control, referred to as RLC), packet data convergence layer (Packet Data Convergence Protocol, referred to as PDCP), radio resource control layer (Radio Resource Control, referred to as RRC). Among them, the PHY layer mainly transmits informa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/02H04W36/08H04W74/08
CPCH04W74/0833H04W28/26H04W36/14
Inventor 杜忠达陈中明
Owner ZTE CORP
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