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Method and system for interference prevention

A parameter and target network technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve the problems of inability to prevent interference, lack of adjacent area interference prevention parameters, etc., and achieve the effect of precise interference prevention

Inactive Publication Date: 2011-11-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, since this cell lacks the interference prevention parameters used for interference prevention of neighboring cells, accurate interference prevention cannot be achieved

Method used

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  • Method and system for interference prevention
  • Method and system for interference prevention
  • Method and system for interference prevention

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Embodiment 1: This embodiment describes a scheme for preventing interference by transferring interference prevention parameters used for interference prevention through a direct interface in the LTE system. For the convenience of description, the two base stations that exchange information are denoted as eNB1 and eNB2 respectively, where Cell1 belongs to a serving cell of eNB1, and Cell2 belongs to a serving cell of eNB2. The base station type described in the embodiment may be not only an eNB, but also a HeNB, and it may be any one of the two base station types indicated by (H)eNB in ​​the figure. For the case where eNB1 and eNB2 are connected to the MME through the home base station gateway, the direct interface can be established with the home base station gateway, or established with the base station. For the case where the eNB is a macro base station, the direct interface may be an interface between the eNB and the home base station gateway, or an interface between...

Embodiment 2

[0075] Embodiment 2: This embodiment describes that under the LTE system, when the interference prevention parameters for interference prevention cannot be transferred through the direct interface between the base stations, it is necessary to transfer the interference prevention parameters for interference prevention through the S1 interface through the forwarding of the MME or HeNB GW Parameters to prevent interference schemes. For the convenience of description, we denote the two base stations that exchange information as eNB1 and eNB2 respectively, where Cell1 belongs to the serving cell of eNB1, and Cell2 belongs to the serving cell of eNB2. The base station type described in the embodiment may be not only an eNB, but also a HeNB, and it may be any one of the two base station types indicated by (H)eNB in ​​the figure. The HeNB may be connected to the MME through the HeNB GW. Among them, the HeNBGW is responsible for forwarding the information. Such as Figure 4 The show...

Embodiment 3

[0083] Embodiment 3: This embodiment describes a scheme for preventing interference by transferring interference prevention parameters used for interference prevention through an Iur direct interface under UMTS. Interference control is performed after the RNC receives the interference prevention parameters of the neighboring cell. For the convenience of description, we denote the two base stations for information exchange as RNC1 and RNC2 respectively, where Cell1 is under the jurisdiction of RNC1, and Cell2 is under the jurisdiction of RNC2. The ENC1 or RNC2 may be a home base station, and in the case of a home base station, the home base station is connected to the core network through a home base station gateway. The direct interface may be between HNBs, or between HNB gateways, or between the RNC of the macro cell and the HNB gateway. For the direct interface to the femtocell gateway, the femtocell gateway is responsible for the forwarding of information. For simplicity ...

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Abstract

The invention discloses a method for interference prevention. The method comprises the following steps: a source network element transmits inter-cell interference prevention parameters to a target network element; and the target network element performs interference prevention according to the interference prevention parameters. The invention also discloses a system for interference prevention. A parameter transmitting unit in the system is used for transmitting the inter-cell interference prevention parameters from the source network element to the target network element; and an interference prevention unit is used for performing interference prevention according to the interference prevention parameters by the target network element. With the adoption of the method and system disclosed by the invention, precise interference prevention can be realized.

Description

technical field [0001] The present invention relates to a wireless cellular communication system, in particular to a method and system for preventing interference. Background technique [0002] Interference is an important issue in wireless communication systems. Inter-cell interference will be more prominent when the cells are deployed on the same frequency. In addition, there is also adjacent-frequency interference between cells in the case of different frequencies. The way to solve the interference is to solve it according to the different scenarios of the interference. For example, the typical way to solve the downlink interference at the edge of the cell is to use the frequency reuse technology to complete. For the macro base station network, interference can be minimized through common interference solutions, such as static interference coordination schemes, interference randomization techniques, and reasonable planning. However, after the introduction of the concept...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16H04W52/18
CPCH04W92/20H04W72/0406H04W72/20
Inventor 王昇明
Owner ZTE CORP