CN110324100B - Method and system for detecting interference caused by radio station - Google Patents

Method and system for detecting interference caused by radio station Download PDF

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Publication number
CN110324100B
CN110324100B CN201910625041.2A CN201910625041A CN110324100B CN 110324100 B CN110324100 B CN 110324100B CN 201910625041 A CN201910625041 A CN 201910625041A CN 110324100 B CN110324100 B CN 110324100B
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sinr
terminal
radio station
base station
interfered
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CN110324100A (en
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卜智勇
谌晓清
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Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
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Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a method and a system for detecting interference caused by a radio station, wherein the method comprises the following steps: a terminal receives downlink data transmission of a base station; the terminal measures the RS of each RB of the air interface resources used by the downlink data transmission of the base station; the terminal calculates the SINR of the RS of each RB; and the terminal judges whether the terminal is interfered by the radio station signal according to the SINR of the RS of each RB. The invention judges whether the RB is interfered by the signal of the radio station by the SINR of the RS of each RB in the downlink transmission process, can realize the detection of the interference caused by the radio station, and finds out the specific interference of the radio station.

Description

Method and system for detecting interference caused by radio station
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and a system for detecting interference caused by a radio station.
Background
In the existing national power communication system, wireless communication is mostly communication equipment based on radio stations, and the power system is relying on the radio stations to ensure communication of the power system so as to maintain safe operation of a national power grid. Meanwhile, the national power system is also planning a new generation communication system of national power based on the current broadband system.
This leads to the coexistence of radio stations and new generation broadband communication technologies in the national grid for a period of time in the future, and this trend is still long due to the advantages of the unique confidentiality of the radio stations and the like, in view of the importance of the national grid to the national security.
At present, the first objective of handling air interface interference caused by an electric tower is to find a specific interference location of a radio station or avoid interference means. The national power grid uses RB bandwidth which is consistent with the radio station bandwidth, and simultaneously uses the frequency hopping technology to realize interference randomization, code block grouping retransmission or base station cycle does not transmit and receive data at special time, but performs intermediate and exclusive measurement.
These existing techniques either tolerate station-induced interference by sacrificing transmission efficiency over the air interface or sacrifice valuable processing power of the base station.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in view of the above problems, a method and system for detecting interference caused by a station are provided.
The invention provides a method for detecting interference caused by a radio station, which comprises the following steps:
a terminal receives downlink data transmission of a base station;
the terminal measures the RS of each RB of the air interface resources used by the downlink data transmission of the base station;
the terminal calculates the SINR of the RS of each RB;
and the terminal judges whether the terminal is interfered by the radio station signal according to the SINR of the RS of each RB.
Further, the method for the terminal to judge whether the terminal is interfered by the radio station signal according to the SINR of the RS of each RB is as follows:
the terminal records the SINR of the RS of each RB as xiWherein i represents the ith RB; calculating the average value of SINRs of all RBs, and recording as avg;
the terminal judges whether SINR of RS of each RB meets the condition avg-x one by oneiIf the RB is larger than m, judging that the RB is interfered by radio station signals; where m is the set threshold.
Preferably, the set threshold m is not less than the sensitivity difference of adjacent mcs selection steps.
The invention also provides a system for detecting the interference caused by the radio station, which comprises a terminal and a base station; the terminal includes:
a receiving module, configured to receive downlink data transmission of a base station;
the measurement module is used for measuring the RS of each RB of the air interface resources used by the downlink data transmission of the base station;
a calculating module, configured to calculate an SINR of the RS of each RB;
and the judging module is used for judging whether the radio station signal interference exists according to the SINR of the RS of each RB.
Further, the determining module is specifically configured to mark SINR of RS of each RB as xiWherein i represents the ith RB; calculating the average value of SINRs of all RBs, and recording as avg; judging whether SINR of RS of each RB meets the condition avg-x one by oneiIf the RB is larger than m, judging that the RB is interfered by radio station signals; where m is the set threshold.
Preferably, the set threshold m is not less than the sensitivity difference of adjacent mcs selection steps.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention judges whether the RB is interfered by the signal of the radio station by the SINR of the RS of each RB in the downlink transmission process, can realize the detection of the interference caused by the radio station, and finds out the specific interference of the radio station.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flow chart of a method of detecting station induced interference according to the present invention.
Fig. 2-3 are block diagrams of the architecture of a system for detecting station induced interference in accordance with the present invention.
Reference numerals: 10-terminal, 11-receiving module, 12-measuring module, 13-calculating module, 14-judging module and 20-base station.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The method for detecting interference caused by a radio station according to the embodiment, as shown in fig. 1, includes:
the terminal 10 receives downlink data transmission of the base station 20;
the terminal 10 measures an RS (Reference Signal) of each RB of an air interface resource used for downlink data transmission by the base station 20;
the terminal 10 calculates SINR (Signal to Interference plus Noise Ratio) of RS of each RB;
the terminal 10 determines whether or not the station signal interferes with the RS according to the SINR of the RS of each RB.
The RS (Reference Signal) of each RB is measured, and the SINR (Signal to Interference plus Noise Ratio) of the RS of each RB is calculated, which may be implemented according to the prior art of LTE. If the RB is interfered by the radio station signal, the SINR of the RS fluctuates due to the interference of the radio station signal, so that the invention can judge whether the RB is interfered by the radio station signal according to the SINR of the RS of each RB. The specific method comprises the following steps:
the terminal 10 records the SINR of the RS of each RB as xiWherein i represents the ith RB; calculating the average value of SINRs of all RBs, and recording as avg;
the terminal 10 judges one by one whether the SINR of the RS of each RB satisfies the condition avg-xiIf the RB is larger than m, judging that the RB is interfered by radio station signals; where m is the set threshold.
Through the above process, since the SINR of the RS fluctuates due to the interference of the station signal, the RB whose SINR is smaller than the average avg of the RS can be preliminarily determined as being interfered by the station signal, and the determination is performed by setting the threshold value in order to avoid the influence of small fluctuation of the SINR of the RS of the RB caused by other factors. In this embodiment, the set threshold m is not less than a sensitivity difference of a Modulation and Coding Scheme (Modulation and Coding strategy) selected order of adjacent mcs.
Example 2
Based on the method for detecting interference caused by a radio station provided in embodiment 1, this embodiment provides a system for detecting interference caused by a radio station, as shown in fig. 2, including a terminal 20 and a base station 10; the terminal includes:
a receiving module 11, configured to receive downlink data transmission of a base station 20;
a measurement module 12, configured to measure an RS of each RB of an air interface resource used for downlink data transmission by the base station 20;
a calculating module 13, configured to calculate an SINR of the RS of each RB;
and the judging module 14 is configured to judge whether the radio station signal interferes with the RS according to the SINR of the RS of each RB.
The determining module 14 is specifically configured to mark SINR of RS of each RB as xiWherein i represents the ith RB; calculating the average value of SINRs of all RBs, and recording as avg; judging whether SINR of RS of each RB meets the condition avg-x one by oneiIf the RB is larger than m, judging that the RB is interfered by radio station signals; where m is the set threshold.
As can be known from the working process of the determining module 14, since the SINR of the RS fluctuates due to the interference of the radio station signal, the RB whose SINR is less than the average avg of the RS can be preliminarily determined as being interfered by the radio station signal, and in order to avoid the influence of small fluctuation of the SINR of the RS of the RB due to other factors, the determination is performed by setting a threshold. In this embodiment, the set threshold m is not less than a sensitivity difference of a Modulation and Coding Scheme (Modulation and Coding strategy) selected order of adjacent mcs.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (2)

1. A method for detecting station-induced interference, comprising:
a terminal receives downlink data transmission of a base station;
the terminal measures the RS of each RB of the air interface resources used by the downlink data transmission of the base station;
the terminal calculates the SINR of the RS of each RB;
the terminal judges whether the terminal is interfered by the radio station signal according to the SINR of the RS of each RB;
the method for the terminal to judge whether the terminal is interfered by the radio station signal according to the SINR of the RS of each RB comprises the following steps:
the terminal records the SINR of the RS of each RB as xiWherein i represents the ith RB; calculating the average value of SINRs of all RBs, and recording as avg;
the terminal judges whether SINR of RS of each RB meets the condition avg-x one by onei>m, if yes, judging that the RB is interfered by the radio station signal; wherein m is a set threshold;
the set threshold m is not less than the sensitivity difference of adjacent mcs selection orders.
2. A system for detecting station-induced interference, comprising a terminal and a base station; the terminal includes:
a receiving module, configured to receive downlink data transmission of a base station;
the measurement module is used for measuring the RS of each RB of the air interface resources used by the downlink data transmission of the base station;
a calculating module, configured to calculate an SINR of the RS of each RB;
the judging module is used for judging whether the radio station signal interference exists according to the SINR of the RS of each RB;
the determining module is specifically configured to mark SINR of RS of each RB as xiWherein i represents the ith RB; calculating the average value of SINRs of all RBs, and recording as avg; judging whether SINR of RS of each RB meets the condition avg-x one by onei>m, if yes, judging that the RB is interfered by the radio station signal; wherein m is a set threshold;
the set threshold m is not less than the sensitivity difference of adjacent mcs selection orders.
CN201910625041.2A 2019-07-11 2019-07-11 Method and system for detecting interference caused by radio station Active CN110324100B (en)

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Publication number Priority date Publication date Assignee Title
CN101572562B (en) * 2008-05-04 2013-03-20 凌阳电通科技股份有限公司 Method for eliminating interference
US20150263796A1 (en) * 2014-03-14 2015-09-17 Samsung Electronics Co., Ltd. Channel state information for reporting an advanced wireless communications system
CN104052700B (en) * 2014-05-27 2017-07-28 北京创毅视讯科技有限公司 A kind of LTE system anti-interference method and device
CN105991244A (en) * 2015-01-29 2016-10-05 北京三星通信技术研究有限公司 Method and equipment for measuring and reporting channel state information
SG11201912854QA (en) * 2017-06-21 2020-01-30 Ntt Docomo Inc User terminal and radio communication method

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