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Method and apparatus for selecting cells from plurality of cells to perform intermittent transmission

A cell selection, cell technology, applied in advanced technology, climate sustainability, sustainable communication technology, etc., can solve the problems of reduced user throughput, unable to compensate for performance degradation, unable to send data, etc., to improve performance, avoid The effect of significantly worsening performance

Inactive Publication Date: 2015-04-15
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, since the users of the small cell selected for intermittent transmission in a certain transmission interval (especially the central user) cannot send data in the transmission interval, data transmission delays occur, making the throughput of the users of the small cell decrease, resulting in poor performance for these users
In many cases, the performance gain brought by the intermittent transmission of the small cell selected in the above way to the users of other small cells cannot make up for the performance degradation of its own users, which leads to the performance degradation of the communication system

Method used

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  • Method and apparatus for selecting cells from plurality of cells to perform intermittent transmission
  • Method and apparatus for selecting cells from plurality of cells to perform intermittent transmission
  • Method and apparatus for selecting cells from plurality of cells to perform intermittent transmission

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no. 1 example ）

[0027] Below, will refer to figure 2 A flowchart of a method for selecting a small cell for intermittent transmission from a plurality of small cells according to the first embodiment of the present invention is described. This method can be figure 1 performed in the eNodeB shown. For example, in figure 1 A small cell controller operatively coupled to the BBU pool is provided in the illustrated eNodeB to perform the method.

[0028] like figure 2As shown, in step S201, the interference information of each small cell in the plurality of small cells is obtained, wherein the interference information of each small cell indicates the interference of the small cell to other small cells in the plurality of small cells level of interference.

[0029] In this embodiment, for each small cell, the number of small cells (ie, victim cells) that are interfered by the small cell among the plurality of small cells may be used to represent the degree of interference of the small cell to...

no. 2 example ）

[0067] In the method and device according to the first embodiment of the present invention and its modifications, the small cell is selected in consideration of the performance gain brought by the small cell performing intermittent transmission to users of other small cells. However, as described above, when a small cell performs intermittent transmission, specifically, when the small cell is turned off for a certain transmission interval, its users (especially the central user) cannot transmit data in the transmission interval, thereby generating data The transmission delay will degrade the performance of the user. In order to balance the above performance gain and performance degradation, a method and apparatus for selecting a cell for intermittent transmission from a plurality of cells according to the second embodiment of the present invention are proposed.

[0068] Hereinafter, a method and apparatus for selecting a small cell for intermittent transmission from among a pl...

no. 3 example ）

[0099] In the third embodiment of the present invention, small cells for intermittent transmission can be selected based only on the number of users of a predetermined type per small cell.

[0100] Hereinafter, a method and apparatus for selecting a small cell for intermittent transmission from among a plurality of small cells according to the third embodiment of the present invention will be described with reference to the accompanying drawings. The third embodiment differs from the first and second embodiments only in that the basis for selecting small cells for intermittent transmission is different. Here, for the sake of simplicity, the third embodiment will be omitted from the first and second embodiments description of the details.

[0101] Figure 8 It is a flowchart illustrating a method of selecting a small cell for intermittent transmission from among a plurality of small cells according to the third embodiment of the present invention. This method can be figure 1...

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Abstract

The invention discloses a method and apparatus for selecting cells from a plurality of cells to perform intermittent transmission. The method comprises the following steps that: interference information of each cell from the plurality of cells, and at least one kind of data selected from the number of users of predetermined types in each cell and the historical intermittent transmission frequency of each cell are acquired, wherein the interference information of each cell indicates the degree of interferences which are exerted on the other cells in the plurality of cells by the cell; and at least one cell is selected from the plurality of cells to perform intermittent transmission based on the interference information of each cell and at least one kind of data selected from the number of the users of predetermined types in each cell and the historical intermittent transmission frequency of each cell. With the method and apparatus of the invention adopted, at least one cell can be properly selected from the plurality of cells to perform intermittent transmission, and therefore, interferences between the cells can be decreased, and negative impact on the performance of a whole communication system can be avoided, and performance deterioration which is caused by a situation in which one or many cells are selected frequently to perform intermittent transmission can be avoided.

Description

technical field [0001] The present invention relates to techniques for reducing inter-cell interference, and more particularly, to a method and apparatus for selecting a cell for intermittent transmission from among a plurality of cells. Background technique [0002] In a mobile communication network, multiple macro cells (or macro base stations) are deployed to provide services to mobile users. However, in areas where users are concentrated, such as stadiums and shopping centers, macro cells alone often cannot provide enough network capacity to provide users with good service. Therefore, in addition to macro cells, multiple small cells can be densely deployed in such an area, that is, cells with lower transmit power and / or smaller coverage than macro cells, such as micro cells ( micro cells), pico cells, etc., and provide services to users through macro cells and these small cells. [0003] However, interference may occur between a plurality of small cells that are densel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04W72/54
CPCH04W72/1263H04W72/542H04W72/52Y02D30/70
Inventor 姜宇云翔陈岚
Owner NTT DOCOMO INC
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