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Cell reselection method and system

A technology for cell reselection and cell reselection parameters, applied in electrical components, wireless communications and other directions, can solve the problems of lack of high-speed scene support for cell reselection parameters, and the inability of cell reselection methods to be well applicable.

Inactive Publication Date: 2011-01-19
深圳市恒程汇文化科技有限公司
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  • Description
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Problems solved by technology

[0011] In view of this, the purpose of the present invention is to provide a method for setting cell reselection parameters and the corresponding radio network controller (RNC), to solve the problem that the cell reselection parameter setting in the prior art lacks support for high-speed scenarios
[0012] Another object of the present invention is to provide a method and system for cell reselection to solve the problem that existing cell reselection methods cannot be better applied to specific scenarios such as along high-speed railways

Method used

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  • Cell reselection method and system
  • Cell reselection method and system

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Embodiment Construction

[0069] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0070] A method for cell reselection provided by the present invention, such as figure 2 As shown, it mainly includes the following steps:

[0071] Step 201, the NodeB measures the Doppler frequency shift of the UE in the cell it covers and reports it to the RNC.

[0072] When the UE enters a certain cell, it successfully camps in the cell after registering with the network side, and the cell is the current serving cell of the UE. At this time, the UE and the NodeB will agree on a frequency for mutual transmission of signals. When the UE is connected to the NodeB (referred to as the UE in the connected state), that is, the UE is in the CELL-DCH state (dedicated channel, Dedicated Channel) or CELL - In the FACH state (forward access channel, Forward Access Channel), the UE sends signals to the NodeB at this frequen...

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Abstract

The invention discloses a cell reselection method, which comprises the steps that: a base station (NodeB) measures Doppler frequency shift of user equipment (UE) in a cell which is covered by the base station and reports the Doppler frequency shift to a radio network controller (RNC); RNC sets parameters for the cell reselection of the UE according to the Doppler frequency shift and sends the set parameters to the UE through the NodeB; and the UE measures the cell according to the received parameters and executes the cell reselection according to a measurement result. The invention also discloses a cell reselection system, which solves the problem that the conventional cell reselection method fails to be applicable to specific spots such as lines along rapid transit railways.

Description

technical field [0001] The invention relates to cell reselection technology in mobile communication, in particular to a cell reselection method and system. Background technique [0002] Modern mobile communication systems are usually built on the basis of cellular networking. The so-called cellular networking means that many regular hexagonal cells are used as the basic unit to combine and cover the entire service area, thereby forming a mobile communication network similar in shape to a cell. A user terminal (UE, User Equipment) is connected to a network device through a wireless channel in a cell, and as the UE moves, it realizes the functions of handover between adjacent cells and automatic roaming across local networks. [0003] Taking the third generation mobile communication system as an example, its radio access network is composed of multiple radio network subsystems, and each radio network subsystem includes a radio network controller (RNC, Radio Network Controller)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W36/30H04W36/32
CPCH04W60/00H04W36/32H04W36/324
Inventor 朱昀王曼禹忠
Owner 深圳市恒程汇文化科技有限公司
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