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Cell switching method and system thereof, terminal and base station

A technology of cell handover and base station, applied in the field of communication, can solve problems such as large time delay, achieve the effect of solving time delay and improving success rate

Active Publication Date: 2015-03-11
SHANGHAI ZTE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a cell switching method, terminal, base station and system to at least solve the above-mentioned problem of large time delay in the cell switching process

Method used

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  • Cell switching method and system thereof, terminal and base station
  • Cell switching method and system thereof, terminal and base station
  • Cell switching method and system thereof, terminal and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] figure 1 Shows a flowchart of a cell handover method according to an embodiment of the present invention, the method includes the following steps:

[0021] Step S102, the terminal receives a handover command, wherein the handover command carries the CCE aggregation degree used by the target cell;

[0022] The switching command in this embodiment may be one of the following: RRC (Radio Resource Control, radio resource control) connection reconfiguration command (RRCConnectionReconfiguration), physical channel reconfiguration command or RB reconfiguration command. As for which specific handover command the base station of the target cell chooses to use, it can be determined according to the cell handover procedure in the related art.

[0023] Step S104, the terminal extracts the CCE aggregation degree from the handover command, and performs cell handover according to the CCE aggregation degree.

[0024] The negotiation process in the related technology of the target bas...

Embodiment 2

[0033] An embodiment of the present invention provides a method for cell switching, which is implemented according to the cell switching process in the related art, such as figure 2 As shown, the handover process includes the following steps: Step S202, before the terminal moves to the target cell, the base station of the target cell performs relevant handover decision processing, and then initiates a handover command, which carries the CCE aggregation degree.

[0034] When the target cell learns that there is a new terminal moving to the cell, it judges the use of CCE by judging the handover scene. The CCE usage can be determined according to the handover field strength or the moving speed.

[0035] For example, judging by switching field strength: if the switching field strength is greater than -80dbm, use 2 CCEs; if the switching field strength is greater than -90dbm, use 4 CCEs; if the switching field strength is less than -90dmb, use 8 CCEs; The value of CCE polymerizati...

Embodiment 3

[0096] image 3 A structural block diagram of a terminal according to an embodiment of the present invention is shown, and the terminal includes:

[0097] A handover command receiving module 32, configured to receive a handover command, wherein the handover command carries the CCE aggregation degree used by the target cell;

[0098] The switching command in this embodiment may be one of the following: RRC Connection Reconfiguration command (RRC Connection Reconfiguration), physical channel reconfiguration command or RB reconfiguration command. As for which specific handover command the base station of the target cell chooses to use, it can be determined according to the cell handover procedure in the related art.

[0099] The cell switching module 34 is connected to the switching command receiving module 32, and is used for extracting the CCE aggregation degree from the switching command received by the switching command receiving module 32, and performing cell switching acco...

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Abstract

The invention discloses a cell switching method and a system thereof, a terminal and a base station. The method comprises the following steps that: a terminal receiving a switching command, wherein the switching command carries a control channel element (CCE) aggregation level used by a target cell; the terminal extracts the CCE aggregation level from the switching command as well as cell switching is carried out according to the CCE aggregation level. According to the invention, a CCE aggregation level is obtained from a switching command, so that a problem that too much time is consumed when a blind test mode is used to obtain a CCE aggregation level can be solved as well as a problem that time delay is serious during a cell switching process is also solved; therefore, a success rate for the cell switching is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a cell switching method, terminal, base station and system. Background technique [0002] In the existing LTE (Long-Term Evolution, referred to as LTE) system, each control channel element (Control Channel Element, referred to as CCE) includes 9 REGs (Resource Element Groups, resource element groups), and each REG includes 4 REs , that is, a CCE is a continuous resource block including 36 REs. Then the total number of CCEs can basically be calculated after the system bandwidth and the number of symbols used for the PDCCH (High Speed ​​Physical Downlink Control Channel, physical downlink control channel) are determined. UE (User Equipment, user equipment) generally does not know what format information is currently transmitted by DCI (Downlink Control Information, downlink control information), nor does it know where the information it needs is located. But the UE knows what i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W72/12
Inventor 赵黎波姬舒平陈凯魏宏徐飞
Owner SHANGHAI ZTE SOFTWARE CO LTD