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Method and device for inter-frequency interference detection

A technology of interference detection and frequency difference, applied in the field of communication, can solve the problems of not being able to know the specific frequency point information of the source of different frequency interference, difficult to apply, and unable to know the interference signal power of the antenna port, etc.

Active Publication Date: 2018-02-23
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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  • Method and device for inter-frequency interference detection
  • Method and device for inter-frequency interference detection
  • Method and device for inter-frequency interference detection

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Embodiment 1

[0068] Aiming at the problems existing in the prior art, Embodiment 1 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, and the method can be applied to a network including a supervisory decision server, an OMC, and a base station device. Wherein, the supervisory judgment server is connected to OMCs of multiple operators, and can query and operate the status of base station equipment of each operator. The roles of the base station equipment can be divided into disturbed base station equipment and interferer base station equipment. The disturbed base station equipment performs inter-frequency interference detection, and if it is found that the frequency point of the interference source is the frequency point of another operator...

Embodiment 2

[0103] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a disturbed base station device, such as Figure 8 As shown, the disturbed 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, so as to obtain the total power of each physical resource block PRB of the interference signal on each frequency point;

[0105] The determination module 12 is configured to determine the interference source frequency point 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 interference source frequency point;

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

Embodiment 3

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

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

[0115] Obtaining module 22, configured to obtain state information corresponding to the disturbed base station equipment;

[0116] The sending module 23 is configured to sen...

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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 inter-frequency interference detection. Background technique [0002] For TD-LTE (Time Division-Long Time Evolution, Time Division Long-Term Evolution) system, a typical 20MHz bandwidth cell signal can be as follows figure 1 As shown, the signal strength of the cell is concentrated within the cell bandwidth, but there are spurious signals on both sides outside the cell bandwidth, and the strength of the spurious signals gradually decreases, showing a roll-off feature. Since the RF filter has limited suppression of the adjacent channel, and the spurious signal of the transmitted signal of the adjacent channel will also fall within the bandwidth of the RF filter of this channel, when the received signal of the adjacent channel is large enough, it will As a result, the noise floor of some PRBs (Physical Resource Blocks, Physical Resource Bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00
CPCH04W24/00
Inventor 刘英浩
Owner DATANG MOBILE COMM EQUIP CO LTD