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Cell addition and reduction method, cell addition and reduction device, serving base station and terminal

A technology of adding and subtracting devices and base stations, which is applied in electrical components, wireless communication, network data management, etc., can solve the problems of failure to consider the switching of auxiliary service cells, the reduction of user peak rate, and the inability to establish communication as soon as possible, and reach the terminal peak The effect of recovering the value rate as soon as possible and reducing the time for the peak rate to drop

Active Publication Date: 2014-12-10
YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing Scell ​​addition and subtraction scheme does not take into account the state of the auxiliary serving cell switch, but mainly determines the best Scell ​​based on the signal strength, which may lead to a sudden drop in the user peak rate
For example, the serving base station selects a better Scell ​​according to the signal strength, but the cell is closed when the user prepares for RRC access, then the user cannot immediately access the Scell, and cannot establish communication as soon as possible, and can only wait until the Scell The Scell ​​can only be connected and communicated with when it changes from the closed state to the open state
In this way, the user only has Pcell to provide communication for a long time, which reduces the peak rate of the user for a long time and deteriorates the user experience.

Method used

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  • Cell addition and reduction method, cell addition and reduction device, serving base station and terminal
  • Cell addition and reduction method, cell addition and reduction device, serving base station and terminal
  • Cell addition and reduction method, cell addition and reduction device, serving base station and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Embodiment 1: An example 1 of selecting a target cell based on switch state and switch time is given below:

[0095] When the user is in Figure 8 When preparing for random access or RRC connection at the time shown, the secondary serving cells #1 and #2 are in the on state, while the secondary serving cells #3 and #4 are in the off state.

[0096] Then the classification of Class A and B auxiliary service cells is as follows: Class A is #1 and #2, and Class B is #3 and #4.

[0097] Select the best auxiliary serving cell of Class A according to the remaining on-time: the remaining on-time of auxiliary serving cell #2 is longer, so auxiliary serving cell #2 is selected as the best class A.

[0098] Select the best auxiliary service cell of Class B according to the time from the opening time in the future: auxiliary serving cell #3 has the shortest time from the opening time in the future, so auxiliary serving cell #3 is selected as the best in class B.

[0099] Compari...

Embodiment 2

[0100] Embodiment 2: An example 2 of selecting a target auxiliary serving cell based on the switching state and switching time is given below.

[0101] When the user is in Figure 9 When preparing for random access or RRC connection at the time shown, the secondary serving cells #1 and #2 are in the on state, while the secondary serving cells #3 and #4 are in the off state.

[0102] Then the classification of Class A and B auxiliary service cells is as follows: Class A is #1 and #2, and Class B is #3 and #4.

[0103] Select the best auxiliary serving cell of Class A according to the remaining on-time: the remaining on-time of auxiliary serving cell #2 is longer, so auxiliary serving cell #2 is selected as the best class A.

[0104] Select the best auxiliary service cell of Class B according to the time from the opening time in the future: auxiliary serving cell #3 has the shortest time from the opening time in the future, so auxiliary serving cell #3 is selected as the best i...

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PUM

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Abstract

The invention provides a cell addition and reduction method, a cell addition and reduction device, a serving base station and a terminal. The cell addition and reduction method includes: after receiving an addition and reduction triggered measurement report sent by the terminal, a main serving base station acquires open-close state information and open-close time information of each of a plurality of candidate auxiliary serving cells in the measurement report; the main serving base station selects out a target auxiliary serving cell to be added for the terminal from the plurality of candidate auxiliary serving cells according to the open-close state information and the open-close time information of each candidate auxiliary serving cell. According to the technical scheme, the auxiliary serving cells can be accessed and used by the terminal as soon as possible, and accordingly peak rate decreasing time of the terminal can be shortened, and peak rate of the terminal can be recovered as quickly as possible.

Description

technical field [0001] The present invention relates to the technical field of cell selection, in particular to a cell addition and subtraction method, a cell addition and subtraction device, a serving base station and a terminal. Background technique [0002] In the LTE-A (Long Term Evolution-Advanced) network, in order to further increase the peak rate, the carrier aggregation technology is introduced. Carrier aggregation technology (such as figure 1 (shown), the user will first connect to a macro cell to ensure connection continuity, and this macro cell is on the carrier frequency F1, so this macro cell is the user's Pcell (Primary Cell, primary serving cell). At the same time, the user is also under the cell coverage of the carrier frequency F2. In order to increase the user peak rate, the base station selects a cell with a strong signal on F2 as the Scell ​​(Secondary Cell) for the user according to the user measurement report. In this way, multiple serving cells will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W8/08
Inventor 李明菊朱亚军张云飞
Owner YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD