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Control method, apparatus and base station for same station adjacent cell interference

A technology of adjacent cell interference and control method, applied in the field of communication, can solve problems such as increased interference level and performance impact of edge users, and achieve the effects of reducing impact, reducing interference and improving system performance

Active Publication Date: 2009-04-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the OFDM technology itself has no inter-cell interference suppression mechanism, if the frequency reuse factor is 1, the inter-cell interference level will increase, especially the performance of users located in the edge area of ​​the cell (hereinafter referred to as: edge users) will be degraded. greatly affected

Method used

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  • Control method, apparatus and base station for same station adjacent cell interference
  • Control method, apparatus and base station for same station adjacent cell interference
  • Control method, apparatus and base station for same station adjacent cell interference

Examples

Experimental program
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Embodiment 1

[0033] figure 1 It is a flow chart of the first embodiment of the control method for co-station adjacent cell interference coordination in the present invention, as shown in figure 1 shown, including:

[0034] Step 11. Obtain two neighboring cells belonging to the same base station that interfere with the current cell, namely the first co-site neighboring cell and the second co-site neighboring cell.

[0035] Neighboring cells that interfere with the current cell may come from co-site neighboring cells or non-co-site neighboring cells. Neighboring cells not on the same site are asynchronous in time with the current cell, and time domain interference coordination cannot be performed; however, adjacent cells on the same site are synchronous in time with the current cell, so time domain interference coordination can be used. In this step, any two adjacent cells that interfere with the current cell and belong to the same base station can be determined according to the measured r...

Embodiment 2

[0051] figure 2 It is a flow chart of the second embodiment of the method for controlling interference coordination between adjacent cells of the same station in the present invention. Such as figure 2 As shown, this embodiment includes:

[0052] Step 21. Obtain two adjacent cells belonging to the same base station that have the strongest interference to the current cell, namely the first co-site neighboring cell and the second co-site neighboring cell.

[0053] In this embodiment, when obtaining adjacent cells belonging to the same base station that interfere with the current cell, the two adjacent cells belonging to the same base station that have the strongest interference with the current cell can be called the first co-site adjacent cells respectively. With the second co-site neighbor cell, it is judged when the two cells with the strongest interference to the current cell start time-domain interference coordination, so as to reduce inter-cell interference as much as ...

specific Embodiment approach

[0111] For example, the information acquisition module 41 of adjacent cells of the same station can measure the reference signal received power RSRP of each adjacent cell according to the information reported by the user of the current cell, and determine two same stations that interfere with the current cell and belong to the same base station. Neighboring cells, preferably, determine two co-site neighboring cells with the most serious interference to the current cell as the first co-site neighboring cell and the second co-site neighboring cell.

[0112] The edge user information acquisition module 42 is used to acquire the information of the edge users in the current cell, and the edge users who are interfered by the first co-site neighbor cell are taken as the first edge users, and the edge users who are interfered by the second co-site neighbor cell are used as the first edge users. The interfering edge user acts as the second edge user.

[0113] The edge user information ...

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Abstract

The embodiment of the invention relates to a control method, a device and a base station, all of which are used for assorting with interference of adjacent districts of the same station; wherein, the method comprises the steps as follows: two adjacent districts (namely a first adjacent district of the same station and a second adjacent district of the same station) belonging to the same base station and having interference with the current district are gained; the edge user information of the current district is gained; the edge user which is interfered by the first adjacent district of the same station is a first edge user; the edge user which is interfered by the second adjacent district of the same station is a second edge user; the resource occupancy rate of the first edge user in the current district is used as a first resource occupancy rate; the resource occupancy rate of the second edge user in the current district is used as a second resource occupancy rate; when the first resource occupancy rate and the second resource occupancy are both less than a first threshold value, the time domain interference coordination is started. The method, the device and the base station can select suitable opportunities according to the charge situation to start the time domain interference coordination, thus effectively reducing the interference between districts.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a method, device and base station for controlling interference coordination between adjacent cells of the same station. Background technique [0002] Spectrum utilization rate and service quality (Quality Of Service, QoS for short) are important performance indicators of wireless access technology and access network. In order to achieve high spectral efficiency, the frequency reuse factor should be as close to 1 as possible when deploying the network; in order to provide satisfactory services, it is necessary to ensure the QoS of users, especially cell edge users. For the long-term evolution (Long Term Evolution, LTE) system physical layer uplink transmission scheme, the uplink (from the user to the base station) transmission is based on the Orthogonal Frequency Division Multiplexing (OFDM) transmission technology, the user in the cell The information is ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W16/14H04W72/04
Inventor 李丹彭炳光
Owner HUAWEI TECH CO LTD
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