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Inter-cell interference suppression method, system and base station and user terminal

A technology of inter-cell interference and terminal interference, which is applied in the field of communication, can solve the problems of occupying too many network resources, base stations transmit a large amount of scheduling information, etc., and achieve the effect of saving network resources

Active Publication Date: 2010-03-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of realizing the present invention, the inventors found that the prior art has at least the following problems: a large amount of scheduling information needs to be transmitted between base stations, and excessive network resources are occupied

Method used

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  • Inter-cell interference suppression method, system and base station and user terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Embodiment 1: Perform interference suppression on the uplink control channel of the user terminal.

[0077] Since the uplink control channel is not scrambled, there are few types of MCS changes, and it is a code division and frequency division channel, so if figure 2 As shown, the specific steps for interference suppression include:

[0078] Step 201, determine an interfering cell.

[0079] In this embodiment, the interfering cell can be determined according to the cell ID information of the interfering cell pre-stored in the original cell; the cell ID information sent by the interfering cell can also be received, and the interfering cell can be determined according to the cell ID information; or according to the above two methods The combination determines the interfering cell.

[0080] Step 202, determine the user terminals that need interference suppression in the original cell, and the interfering terminals that need interference suppression in the interfering ce...

Embodiment 2

[0091] Embodiment 2: Perform interference suppression on the uplink data channel of the user terminal.

[0092] Since the uplink data channel needs to be scrambled, there are many types of MCS changes, and it is only a frequency division channel, so if image 3 As shown, the specific steps for interference suppression include:

[0093] Wherein, the steps 301 and 302 are the same as the steps 201 and 202 in Embodiment 1, and will not be repeated here.

[0094] Step 303, setting a scheduling resource constraint condition, and saving the scheduling resource constraint condition in the original cell and the interfering cell.

[0095] The scheduling resource constraints may include: constraints on the location and size of RB resources, constraints on the type and period of the scheduled MCS, constraints on MIMO modes, constraints on RSs, and the like. In this embodiment, the cycle of the MCS can be set relatively slowly, thereby reducing the number of times the MCS is transmitted...

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Abstract

The embodiment of the invention discloses an inter-cell interference suppression method, a system and base station and a user terminal, relating to communication filed. The invention solves the problem of too much network communication resource occupation caused by a great amount of scheduling information required to be transported among cell base stations. The inter-cell interference suppressionmethod comprises the following steps: determining an interference cell; acquiring the scheduling information of an interference terminal meeting a terminal constraint condition in the interference cell; and carrying out interference suppression operation on user terminals meeting the terminal constraint condition in the original cell according to the scheduling information of the interference terminal. The technical scheme provided by the embodiment of the invention can be applied in 3G network and next generation wireless network.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for suppressing inter-cell interference. Background technique [0002] Existing cellular mobile communication systems (such as 3G systems) generally adopt a method of frequency reuse to avoid inter-cell interference (Inter-cell Interference, ICI). Wherein, the frequency reuse coefficient is a specific value: 1, 3 or 7. When the frequency reuse coefficient is set to 3 or 7, inter-cell interference can be effectively suppressed, but at this time, the spectrum efficiency used by each cell is low ( only 1 / 3 or 1 / 7 of the total spectral efficiency). In order to improve the spectrum utilization of wireless resources, under normal circumstances, the frequency reuse factor is set to 1, and each cell can use all frequency bands to transmit information. However, in this case, inter-cell interference will occur, especially when two When two adjacent cells use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/12H04W72/54
Inventor 赵亚军孙静原任晓涛万蕾
Owner HUAWEI TECH CO LTD
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