CN107241747B - Method for estimating position of maximum exposure point of electromagnetic radiation of base station - Google Patents

Method for estimating position of maximum exposure point of electromagnetic radiation of base station Download PDF

Info

Publication number
CN107241747B
CN107241747B CN201710441078.0A CN201710441078A CN107241747B CN 107241747 B CN107241747 B CN 107241747B CN 201710441078 A CN201710441078 A CN 201710441078A CN 107241747 B CN107241747 B CN 107241747B
Authority
CN
China
Prior art keywords
base station
transmitting antenna
point
receiving
electromagnetic radiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710441078.0A
Other languages
Chinese (zh)
Other versions
CN107241747A (en
Inventor
杨万春
唐坤
高协平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiangtan University
Original Assignee
Xiangtan University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiangtan University filed Critical Xiangtan University
Priority to CN201710441078.0A priority Critical patent/CN107241747B/en
Publication of CN107241747A publication Critical patent/CN107241747A/en
Application granted granted Critical
Publication of CN107241747B publication Critical patent/CN107241747B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The invention discloses a method for estimating the position of a maximum exposure point of electromagnetic radiation of a base station, which comprises the following specific steps: firstly, obtaining a receiving power expression of a certain point by combining a COST-231Walfish-Ikegami path loss model under the condition of considering relevant parameters of a transmitting antenna and a line of sight; and then, deriving the horizontal distance x from the receiving point to the transmitting antenna of the base station through a certain point position receiving power expression, and determining the position of the maximum electromagnetic radiation exposure point of the base station. The method for estimating the position of the maximum exposure position of the electromagnetic radiation of the base station by considering the height of the transmitting antenna of the base station, the maximum transmitting power of the base station and the height of the receiving antenna can accurately, simply and quickly position the maximum exposure position of the electromagnetic radiation of the base station.

Description

Method for estimating position of maximum exposure point of electromagnetic radiation of base station
Technical Field
The invention relates to a method for estimating the position of a maximum exposure point of electromagnetic radiation of a base station.
Background
With the rapid development of mobile communication industry, a large number of newly built base stations are put into use, and the influence of electromagnetic radiation environment of the base stations becomes a problem which is increasingly concerned by the public. When measuring the electromagnetic radiation of the base station, the position of the maximum exposure point of the electromagnetic radiation of the base station is often required to be found as soon as possible, so that the electromagnetic radiation size and the environmental impact evaluation of the position of the maximum exposure point are analyzed. However, no effective method has been proposed for estimating the position of the maximum exposure point of electromagnetic radiation of the base station.
Aiming at the problems, the invention provides a method for estimating the position of the maximum exposure point of the electromagnetic radiation of the base station based on the relevant information of the base station.
Disclosure of Invention
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a method for estimating the position of the maximum exposure point of electromagnetic radiation of a base station comprises the following steps:
1) obtaining a receiving power expression of a certain point by combining a COST-231Walfish-Ikegami path loss model under the condition of considering relevant parameters of a transmitting antenna and a line of sight;
2) and (3) carrying out derivation on x by using the receiving power expression in the step (1), wherein x is the horizontal distance from the receiving point to the transmitting antenna of the base station, and determining the position of the maximum exposure point of the electromagnetic radiation of the base station.
In the above method for estimating the position of the maximum exposure point of electromagnetic radiation of the base station, in step 1), the received power at a certain point in the coverage area of the base station is:
P r＝P t+G tF(x)+G r-P l
wherein, P rRepresents the received power of a certain point and has the unit of dBm, P tRepresents the rated transmitting power of the base station and has the unit of dBm, G tRepresents the gain of the transmitting antenna of the base station and has the unit of dBi, G rDenotes the gain of the receiving antenna in dBi, F (x) denotes the gain factor of the transmitting antenna, x denotes the horizontal distance between the receiving point and the transmitting antenna of the base station in m, P lRepresents the path loss in dB;
the COST-231Walfish-Ikegami path loss model under the sight distance condition is as follows:
P l＝42.64+20log 10f+26log 10(10 -3d)
where f denotes the frequency of the signal in MHz, d denotes the distance between the receiving point and the transmitting antenna of the base station,
Figure BDA0001319956590000021
h represents the height of a base station transmitting antenna from the ground, H represents the height of a receiving point from the ground, and the units of d, H and H are m;
the gain factor f (x) of the transmitting antenna is expressed as:
Figure BDA0001319956590000022
in the above method for estimating the position of the maximum exposure point of electromagnetic radiation of the base station, in step 2), the horizontal distance x from the receiving point to the transmitting antenna of the base station is derived according to the bit receiving power of the certain point in step 1:
Figure BDA0001319956590000023
by the derivative being equal to 0, i.e.
Figure BDA0001319956590000024
Determining the position of the maximum exposure point of the electromagnetic radiation of the base station:
Figure BDA0001319956590000025
the invention has the beneficial effects that: the invention provides a method for estimating the position of the maximum exposure point of electromagnetic radiation of a base station, which can accurately, simply and quickly position the position of the maximum exposure point of the electromagnetic radiation of the base station, has great reference value for base station construction, environmental impact evaluation and environmental protection, and has certain social benefit.
Drawings
FIG. 1 is a diagram of a scene model according to the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
The invention discloses a method for estimating the position of a maximum exposure point of electromagnetic radiation of a base station, which comprises the following steps:
1) obtaining a receiving power expression of a certain point by combining a COST-231Walfish-Ikegami path loss model under the condition of considering relevant parameters of a transmitting antenna and a line of sight;
2) and (3) carrying out derivation on x by using the receiving power expression in the step (1), wherein x is the horizontal distance from the receiving point to the transmitting antenna of the base station, and determining the position of the maximum exposure point of the electromagnetic radiation of the base station.
In the step 1, a received power expression at a certain point is obtained by combining a COST-231Walfish-Ikegami path loss model under the condition of considering relevant parameters of a transmitting antenna and a line of sight, and the received power expression includes the following contents:
in this embodiment, the rated transmission power of the base station is 43dBm, i.e., P tThe gain of the base station transmitting antenna is 16dBi, i.e. G, 43dBm tThe height of the base station antenna is 20m at 16dBi, i.e. H20 m, and the gain of the receiving antenna is 5dBi, i.e. G rThe height of the receiving antenna is 1.7 meters at 5dBi, i.e. h is 1.7 m.
The gain factor f (x) of the transmitting antenna can be obtained according to the parameters:
Figure BDA0001319956590000031
wherein, x represents the horizontal distance between the receiving point and the base station antenna, H represents the height between the base station transmitting antenna and the ground, H represents the height between the receiving point and the ground, and the units of x, H and H are m;
in the COST-231Walfish-Ikegami path loss model under the line of sight condition, when the center frequency of the measurement signal is 958MHz, that is, f is 958MHz, the path loss is:
P l＝42.64+20log 10f+26log 10(10 -3d)
＝24.27+13log 10(x 2+334.89)
where f denotes the frequency of the signal in MHz, d denotes the distance between the receiving point and the transmitting antenna of the base station,
Figure BDA0001319956590000032
the unit of d is m;
according to the gain factor F (x) of the transmitting antenna and a COST-231Walfish-Ikegami path loss model, the bit receiving power expression of a certain point can be known:
wherein, P rRepresents the received power of a certain point and has the unit of dBm, P tRepresents the rated transmitting power of the base station and has the unit of dBm, G tRepresents the gain of the transmitting antenna of the base station and has the unit of dBi, G rDenotes the gain of the receiving antenna in dBi, F (x) denotes the gain factor of the transmitting antenna, x denotes the horizontal distance between the receiving point and the transmitting antenna of the base station in m, P lRepresents the path loss in dB;
in the step 2, the received power expression in the step 1 is derived from x, where x is a horizontal distance from a receiving point to a transmitting antenna of the base station, and a position of a maximum exposure point of electromagnetic radiation of the base station is determined, where x includes the following contents:
by a certain point bit receiving power expression, the horizontal distance x from the receiving point to the base station is derived as:
Figure BDA0001319956590000041
by the derivative being equal to 0, i.e.
Figure BDA0001319956590000042
Determining the position of the maximum exposure point of the electromagnetic radiation of the base station, and obtaining the horizontal distance between the maximum exposure point of the electromagnetic radiation and the base station according to the parameters:
Figure BDA0001319956590000043
from the above calculation, in this case, the maximum exposure point of the electromagnetic radiation of the base station is located at a distance of 24.76 meters from the horizontal position of the base station.

Claims (2)

1. A method for estimating the position of the maximum exposure point of electromagnetic radiation of a base station is characterized by comprising the following steps:
1) and obtaining a receiving power expression of a certain point by combining a COST-231Walfish-Ikegami path loss model under the condition of considering relevant parameters of a transmitting antenna and a line of sight:
P r＝P t+G tF(x)+G r-P l
wherein, P rRepresents the received power of a certain point and has the unit of dBm, P tRepresents the rated transmitting power of the base station and has the unit of dBm, G tRepresents the gain of the transmitting antenna of the base station and has the unit of dBi, G rDenotes the gain of the receiving antenna in dBi, F (x) denotes the gain factor of the transmitting antenna, x denotes the horizontal distance between the receiving point and the transmitting antenna of the base station in m, P lRepresents the path loss in dB;
the COST-231Walfish-Ikegami path loss model under the sight distance condition is as follows:
P l＝42.64+20log 10f+26log 10(10 -3d)
where f denotes the frequency of the signal in MHz, d denotes the distance between the receiving point and the transmitting antenna of the base station,
Figure FDA0002277455980000011
h represents the height of a base station transmitting antenna from the ground, H represents the height of a receiving point from the ground, and the units of d, H and H are m;
the gain factor f (x) of the transmitting antenna is expressed as:
Figure FDA0002277455980000012
2) and (3) carrying out derivation on x by using the receiving power expression in the step (1), wherein x is the horizontal distance from the receiving point to the transmitting antenna of the base station, and determining the position of the maximum exposure point of the electromagnetic radiation of the base station.
2. The method for estimating the location of the maximum exposure point of electromagnetic radiation of a base station as claimed in claim 1, wherein in step 2), the horizontal distance x from the receiving point to the transmitting antenna of the base station is derived by the expression of the bit receiving power at the certain point in step 1):
Figure FDA0002277455980000013
wherein, P rRepresents the received power of a certain point and has the unit of dBm, P tRepresents the rated transmitting power of the base station and has the unit of dBm, G tRepresents the gain of the transmitting antenna of the base station and has the unit of dBi, G rDenotes the gain of the receiving antenna in dBi, F (x) denotes the gain factor of the transmitting antenna, x denotes the horizontal distance between the receiving point and the transmitting antenna of the base station in m, P lThe unit of path loss is dB, f represents the frequency of a signal and the unit is MHz, H represents the height of a base station transmitting antenna from the ground, H represents the height of a receiving point from the ground, and H, H has the unit of m;
by passingThe derivative being equal to 0, i.e. Determining the position of the maximum exposure point of the electromagnetic radiation of the base station:
Figure FDA0002277455980000022
CN201710441078.0A 2017-06-13 2017-06-13 Method for estimating position of maximum exposure point of electromagnetic radiation of base station Active CN107241747B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710441078.0A CN107241747B (en) 2017-06-13 2017-06-13 Method for estimating position of maximum exposure point of electromagnetic radiation of base station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710441078.0A CN107241747B (en) 2017-06-13 2017-06-13 Method for estimating position of maximum exposure point of electromagnetic radiation of base station

Publications (2)

Publication Number Publication Date
CN107241747A CN107241747A (en) 2017-10-10
CN107241747B true CN107241747B (en) 2020-02-11

Family

ID=59987380

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710441078.0A Active CN107241747B (en) 2017-06-13 2017-06-13 Method for estimating position of maximum exposure point of electromagnetic radiation of base station

Country Status (1)

Country Link
CN (1) CN107241747B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111030769B (en) * 2019-12-19 2022-02-01 湘潭大学 Base station electromagnetic radiation prediction method
CN115243271B (en) * 2022-07-14 2023-09-05 中国联合网络通信集团有限公司 Radiation evaluation method, device and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103076505A (en) * 2012-12-27 2013-05-01 广东省辐射防护协会 Three-dimensional space prediction method for electromagnetic radiation of TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) mobile communication base station environment
CN103874090A (en) * 2014-03-31 2014-06-18 湘潭大学 GSM communication base station electromagnetic radiation prediction method
CN106454918A (en) * 2016-09-18 2017-02-22 广东智环创新环境技术研究有限公司 Method for predicting electromagnetic radiation level of surrounding environment of TD-LTE mobile communication base station

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103076505A (en) * 2012-12-27 2013-05-01 广东省辐射防护协会 Three-dimensional space prediction method for electromagnetic radiation of TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) mobile communication base station environment
CN103874090A (en) * 2014-03-31 2014-06-18 湘潭大学 GSM communication base station electromagnetic radiation prediction method
CN106454918A (en) * 2016-09-18 2017-02-22 广东智环创新环境技术研究有限公司 Method for predicting electromagnetic radiation level of surrounding environment of TD-LTE mobile communication base station

Also Published As

Publication number Publication date
CN107241747A (en) 2017-10-10

Similar Documents

Publication Publication Date Title
Popoola et al. Empirical path loss models for GSM network deployment in Makurdi, Nigeria
JP6947168B2 (en) Indoor / outdoor judgment program, indoor / outdoor judgment system, indoor / outdoor judgment method, mobile terminal, and indoor / outdoor environment classification judgment means
US9743296B2 (en) Methods and systems for emulating testing-plan channel conditions in wireless networks
CN104811964B (en) The appraisal procedure and system of a kind of intelligent antenna performance
EP2990830B1 (en) Method and device for indoor positioning
CN104237651A (en) Method for calculating radiation power density of antenna of mobile communication base station
CN108260202A (en) A kind of localization method and device of measurement report sampled point
CN104994526A (en) Method for measuring azimuth angle of mobile communication base station antenna
CN107241747B (en) Method for estimating position of maximum exposure point of electromagnetic radiation of base station
Mollel et al. An overview of various propagation model for mobile communication
Bilgehan et al. Multiplicative based path loss model
CN105792238A (en) Pseudo base station locating method and pseudo base station locating device
CN109474946B (en) Method for predicting electromagnetic radiation of base station in rural area
Akande et al. Performance analysis and optimization of cost 231-hata model for mobile communication in Nigeria
CN105338547B (en) Pci signal optimization method and system in LTE network based on antenna power
US11228922B2 (en) Method and system for generating a contour
Pathania et al. A modified formulation of path loss models for broadcasting applications
CN110113774A (en) A kind of channel modeling method of ultrashort wave radio station
Acar et al. Comparison of computer-based propagation models with experimental data collected in an urban area at 1800 MHz
CN109842847B (en) Method for distinguishing indoor user terminal from outdoor user terminal and base station
Mo et al. Radio propagation prediction model for maritime mobile communication
CN108738131A (en) A kind of iteration weighted mass center localization method of cellular base station
CN106488474B (en) Method and device for determining antenna model of cell
CN109756844A (en) Earth bulge object is backwards to grid fingerprint generation method
CN111030769B (en) Base station electromagnetic radiation prediction method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant