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Pilot frequency interference detection method and equipment

A technology of interference detection and inter-frequency, which is applied in the field of communication, can solve problems such as being difficult to apply, unable to know the interference signal power of the antenna port, and unable to know the specific frequency point information of the inter-frequency interference source, etc.

Active Publication Date: 2015-04-29
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above implementation, through the uplink time slot interference detection within the bandwidth of the cell, it can only be known that the frequency point of the interference source is the same-frequency interference source in this channel or a different-frequency interference source in an adjacent channel, but it cannot be known The specific frequency point information of the frequency interference source, and the actual interference signal power received by the antenna port of the cell cannot be known. Therefore, the above implementation method is difficult to apply in the interference troubleshooting of actual network operation and maintenance.

Method used

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  • Pilot frequency interference detection method and equipment
  • Pilot frequency interference detection method and equipment
  • Pilot frequency interference detection method and equipment

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Embodiment 1

[0068] In view of the problems in the prior art, the first embodiment of the present invention provides a method for inter-frequency interference detection, which is a method for locating interference sources based on inter-frequency cross-slot interference detection. Figure 5 It is a schematic diagram of an application scenario of an embodiment of the present invention. The method can be applied to a network including a supervisory decision server, an OMC, and base station equipment. Among them, the supervisory decision server is connected to the OMCs of multiple operators, and can query and operate the status of the base station equipment of each operator. The role of the base station equipment can be divided into the victim base station equipment and the interference source base station equipment. The disturbed base station equipment performs inter-frequency interference detection, and if it is found that the frequency of the interference source is the frequency of other ope...

Embodiment 2

[0103] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a victim base station device, such as Figure 8 As shown, the victim base station equipment specifically includes:

[0104] The detection module 11 is configured to perform inter-frequency interference detection on each frequency point of each operator to obtain the total power of each physical resource block PRB of the interference signal at each frequency point;

[0105] The determining module 12 is configured to determine the frequency of the interference source by using the total power of each PRB of the interference signal at each frequency point, and determine the inter-frequency interference source information corresponding to the frequency point of the interference source;

[0106] The sending module 13 is configured to send the inter-frequency interference source information to the operation and maintenance center OMC, and the OMC sends the inter-frequency inte...

Embodiment 3

[0113] Based on the same inventive concept as the above method, the embodiment of the present invention also provides an operation and maintenance center OMC, such as Picture 9 As shown, the OMC specifically includes:

[0114] The receiving module 21 is configured to receive inter-frequency interference source information from a victim base station equipment; wherein, the inter-frequency interference source information is each of the interference signals used by the victim base station equipment on each frequency point of each operator The total power of the physical resource block PRB determines the frequency of the interference source, and determines the inter-frequency interference source information corresponding to the frequency of the interference source and sends it to the OMC;

[0115] The obtaining module 22 is configured to obtain state information corresponding to the victim base station equipment;

[0116] The sending module 23 is configured to send the inter-frequency i...

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Abstract

The invention discloses a pilot frequency inference detection method and equipment. The method comprises the following steps: carrying out pilot frequency inference detection on each frequency point of each operators by base station equipment to obtain the total power of PRBs of the interference signals on the frequency points; determining the interference source frequency points by the interfered base station equipment through the utilization of the total power of the PRBs of the interference signals on the frequency points, and determining pilot frequency interference source information corresponding to the interference source frequency points; sending the pilot frequency interference source information to an OMC by the interfered base station equipment and sending the pilot frequency interference source information to a supervision and judgment server by the OMC. According to the pilot frequency inference detection method and equipment, the operators can be helped to find the interference sources from the own operator networks or from other operator networks, and the pilot frequency interference detection can automatically prove and record the interference source information of the other operators, so that the supervision and judgment server can know the frequency point information of the pilot frequency interference sources so as to carry out interference investigation during the actual network operation and maintenance.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a method and equipment for detecting inter-frequency interference. Background technique [0002] For the TD-LTE (Time Division-Long Time Evolution) system, a typical 20MHz bandwidth cell signal can be as figure 1 As shown, the cell signal strength is concentrated within the cell bandwidth, but there are spurious signals on both sides outside the cell bandwidth, and the spurious signal strength gradually decreases, showing a roll-off characteristic. Due to the limited suppression of the adjacent channel by the radio frequency filter, and the spurious signal of the transmitted signal of the adjacent channel will also fall within the bandwidth of the radio frequency filter of this channel, when the received signal of the adjacent channel is large enough, the As a result, the noise floor of part of the PRB (Physical Resource Block) of the channel is raised, and in severe ca...

Claims

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Application Information

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IPC IPC(8): H04W24/00
CPCH04W24/00
Inventor 刘英浩
Owner DATANG MOBILE COMM EQUIP CO LTD