CN112702758A

CN112702758A - High-gain CPE receiving range testing method based on GPS positioning

Info

Publication number: CN112702758A
Application number: CN202011368885.2A
Authority: CN
Inventors: 钟翔; 黄锦军; 成钢; 彭蛟; 刑国清
Original assignee: Tongyu Communication Inc
Current assignee: Tongyu Communication Inc
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-04-23
Anticipated expiration: 2040-11-30
Also published as: CN112702758B

Abstract

The invention provides a high-gain CPE receiving range testing method based on GPS positioning, which comprises the following steps: step one, opening GPS positioning software below a selected island base station, and recording longitude values and latitude values of the place; step two, inserting a telephone card into the CPE on the ship and connecting the CPE with a base station; step three, connecting the mobile terminal with the CPE through WIFI; step four, continuously transmitting and receiving data with the internet through the mobile terminal, and detecting whether the CPE is in the receiving range of the base station in real time; step five, starting the ship and driving the ship to the open sea along a straight line, if the CPE is prompted to exceed the receiving range of the base station, stopping the ship and recording the longitude value and the latitude value of the place; and step six, calculating the actual receiving range of the CPE according to the longitude and latitude coordinates recorded twice. The invention is based on GPS positioning, and carries out receiving range calculation according to the coordinate values of longitude and latitude, and the measurement precision is high; and because the device runs on the sea without obstacles, the interference of buildings is avoided, and the test result is more accurate.

Description

High-gain CPE receiving range testing method based on GPS positioning

Technical Field

The invention relates to the technical field of CPE (customer premises equipment) testing methods, in particular to a high-gain CPE receiving range testing method based on GPS (global positioning system) positioning.

Background

The CPE is a terminal product for converting 4G signals and WIFI signals, the CPE can directly receive 4G network signals transmitted by a base station (BTS) tower through a 4G transceiver module, and then generates WIFI signals after CPE unit baseband and digital signal processing, wherein the high-gain CPE terminal can be installed on a ship, and the purpose of network data communication can be realized through the CPE even if a marine crew far away from land.

The theoretical calculation method of the existing CPE receiving range test scheme is as follows: the transmission power (TRP) and the receiving sensitivity (TIS) of the CPE are measured in the signal shielding space, and then the receiving range is calculated according to the propagation formula of the signal in the space. The range formula is: P-TRP =32.45+20 log (f) MHz +20 log (d) Km + multipath loss. Wherein the multipath loss is 10 dB; p is the base station transmit power.

The CPE signal reception range is typically tested and needs to cooperate with the communications carrier and lock onto a particular base station signal to avoid interference from adjacent base station signals. The receiving range is calculated by recording the strength of a received signal in the moving process by using a professional receiving device which is arranged on a vehicle and moves to a far place from the lower part of a base station.

However, the commonly used field test solutions have the following disadvantages:

1. the CPE is not in customer relationship with the communication operator, so that the problems that the base station for testing is difficult to coordinate and the testing cost is high exist;

2. in the testing time period, the communication quality in the original coverage cell of the testing base station is reduced or abnormal;

3. buildings near the base station can block the space transmission of signals, so that the test result is deviated;

4. the test route is limited by the coverage area terrain of the base station for test, and the test route may not be a straight line, so that the test result has deviation.

Disclosure of Invention

The invention aims to provide a GPS positioning-based high-gain CPE receiving range testing method with low testing cost and high measuring accuracy.

In order to achieve the purpose, the invention adopts the technical scheme that: a high-gain CPE receiving range testing method based on GPS positioning comprises the following steps:

step one, opening GPS positioning software below a selected island base station, and recording longitude values and latitude values of the place;

step two, inserting a telephone card into the high-gain CPE and connecting the high-gain CPE with a base station on the ship to ensure that the high-gain CPE and the base station communicate normally;

step three, connecting the mobile terminal with the high-gain CPE through WIFI, and ensuring that the mobile terminal can normally realize the internet surfing function;

step four, continuously transmitting and receiving data with the internet through the mobile terminal, and detecting whether the high-gain CPE is in the receiving range of the base station in real time;

starting the ship and driving the ship to the open sea along a straight line, observing a measurement signal given by the mobile terminal in real time in the straight line driving process, stopping the ship and recording the longitude value and the latitude value of the place if the high-gain CPE is prompted to exceed the receiving range of the base station;

and step six, calculating the actual receiving range of the high-gain CPE according to the longitude and latitude coordinates recorded twice.

Further, there are no other base stations near the selected island base station, and there are no obstacles and other base stations on the course on which the ship travels straight.

Further, the mobile terminal includes, but is not limited to, a notebook computer and a mobile phone capable of implementing a normal internet access function.

Further, in calculating the actual receiving range of the high-gain CPE, the following formula is used:

。

compared with the prior art, the invention has the beneficial effects that:

1. the invention is based on GPS positioning, and carries out receiving range calculation according to the coordinate values of longitude and latitude, and the measurement precision is high;

2. the base station does not need to be borrowed from an operator for testing, and special equipment and software do not need to be purchased, so that the measurement cost is low;

3. the mobile terminal can be a notebook computer or a mobile phone, and test equipment is common, so that the measurement cost can be further reduced;

4. the device has no obstacle when running on the sea, thus avoiding the interference of buildings and leading the test result to be more accurate.

Drawings

Fig. 1 is a test schematic diagram of a high-gain CPE receiving range test method based on GPS positioning according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

1. Site selection of a test site:

in view of the problems of the conventional field test scheme, as shown in fig. 1, a new test field is selected to be performed at sea, and base stations of islands at sea are selected for testing, and meanwhile, other base stations cannot exist near the islands. Thus the high gain CPE is always connected to the base station during the course of moving with the ship. The ship moves along a straight line from the vicinity of the island to the outside sea, and the ship can run on the sea without obstacles and can be guaranteed to run on the straight line without other base stations in the running direction.

2. The test method specifically comprises the following steps:

step one, opening GPS positioning software below the selected island base station, and recording longitude values and latitude values of the place;

step two, plugging the CPE into a telephone card to connect with a base station on the ship, and ensuring that the communication between the CPE and the base station is normal;

connecting the notebook computer or the mobile phone with the CPE through the WIFI, and ensuring that the notebook computer or the mobile phone can normally realize a normal internet surfing function;

step four, if the notebook computer is selected, selecting 'operation' in a starting menu of the notebook computer, inputting CMD in a dialog box, calling out a command prompt box, and after inputting 'Ping www.baidu.com-t', the notebook computer continuously transmits and receives data to the hundred-degree website; if a high-precision test result is required, the mobile phone can be replaced by a GPS locator;

starting the ship, driving the ship to the open sea along a straight line, observing command prompt box information on the notebook computer in the driving process, and when the driving range of the ship exceeds the receiving range of the CPE, the command prompt box can generate the condition of 'request overtime', and at the moment, stopping the ship and recording the longitude and latitude values of the point;

step six, importing the longitude and latitude coordinates recorded twice into a distance calculation formula, and calculating the actual range received by the CPE, wherein the calculation formula is as follows:

。

the invention adopts GPS positioning to calculate the distance, the longitude and latitude can be accurate to 6 bits after decimal point, the receiving range can be converted to 1 meter, the measuring cost is low and the measuring result is accurate.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-gain CPE receiving range testing method based on GPS positioning is characterized by comprising the following steps:

2. The method of claim 1, wherein the method comprises: there are no other base stations near the selected island base station and there are no obstacles and other base stations on the straight course of the ship.

3. The method of claim 1, wherein the method comprises: the mobile terminal includes, but is not limited to, a notebook computer and a mobile phone capable of realizing a normal internet access function.

4. The method of claim 1, wherein the method comprises: in calculating the actual reception range of the high-gain CPE, the following formula is used:

。