CN111817919B - System and method for testing 3-frequency MESH product - Google Patents

System and method for testing 3-frequency MESH product Download PDF

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Publication number
CN111817919B
CN111817919B CN202010658920.8A CN202010658920A CN111817919B CN 111817919 B CN111817919 B CN 111817919B CN 202010658920 A CN202010658920 A CN 202010658920A CN 111817919 B CN111817919 B CN 111817919B
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shielding box
frequency
client
mesh
port
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CN111817919A (en
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刘丽
刘文明
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Shenzhen Tenda Technology Co Ltd
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Shenzhen Tenda Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/29—Performance testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/14—Arrangements for monitoring or testing data switching networks using software, i.e. software packages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a test system and a test method of a 3-frequency MESH product, wherein the test system comprises a PC client, a 3-frequency MESH node, a stepping attenuator and a shielding box, the PC client comprises a first PC client, a second PC client and a third PC client, the 3-frequency MESH node comprises a first 3-frequency MESH node, a second 3-frequency MESH node and a third 3-frequency MESH node, the shielding box comprises a first shielding box, a second shielding box and a third shielding box, and the first 3-frequency MESH node, the second 3-frequency MESH node and the third 3-frequency MESH node are respectively placed in the first shielding box, the second shielding box and the third shielding box. The method has the beneficial effects that 1, the method tests the wireless forwarding performance of two 3-frequency MESH nodes by adjusting the attenuation value of the stepping attenuator to determine the correctness of the MESH path selection between the 3-frequency MESH nodes.

Description

System and method for testing 3-frequency MESH product
Technical Field
The invention relates to the technical field of testing, in particular to a 3-frequency MESH product MESH path selection correctness testing system and method.
Background
3 frequency MESH products, each MESH product node has 3 frequency bands, after 2 MESH nodes are networked, 3 frequency bands of the MESH nodes are correlated with each other, 3 transmission effective paths are formed among the nodes, the MESH nodes select a path according to a path algorithm to forward data, and how to judge the path selected by the nodes is optimal? The existing testing method is that two nodes are placed in an actual environment, two PCs are respectively connected with a LAN port of the node or wireless signals of the node, the PC runs and records data and path selection of the node at the moment, then the path between the nodes is forced to be an unselected path, the PC runs and records data, test data before and after comparison is carried out, and the path selection correctness of the node is verified. In the existing testing technology, the whole environment is placed in an actual environment, the correctness of Mesh path selection under different attenuation conditions needs to be tested without stopping the position of a mobile node, and the whole testing is time-consuming and labor-consuming.
This method has the following drawbacks:
1) the whole test environment is in the actual use scene of the user, and different use scenes need to be searched for Mesh products with different transmitting powers and different coverage requirements.
2) Under the condition that different attenuation values are tested in the actual use environment of a user, the position of the Mesh node needs to be moved ceaselessly, the test consumes time and labor, and the accuracy of the attenuation values is not high.
3) In the actual use environment of a user, most terminal users are wifi users, when the Mesh frequency band selected among the 3-frequency Mesh nodes is consistent with the frequency band connected with the wifi terminal, competition of wifi air interface resources can be caused, the performance of the wifi users is affected, and the existing test scheme does not consider the condition of multiple wifi terminals;
4) after a plurality of 3-frequency Mesh nodes are networked, the same frequency interference among the nodes can also influence the routing and the Mesh performance of the Mesh, and the existing test scheme is not considered;
5) in the using environment of a client, external co-frequency and adjacent frequency interference can cause interference on the accuracy of Mesh routing, and the existing test scheme is not considered.
Disclosure of Invention
The invention provides a test system of a 3-frequency MESH product, which comprises a PC client, a 3-frequency MESH node, a stepping attenuator and a shielding box, wherein the PC client comprises a first PC client, a second PC client and a third PC client, the 3-frequency MESH node comprises a first 3-frequency MESH node, a second 3-frequency MESH node and a third 3-frequency MESH node, the shielding box comprises a first shielding box, a second shielding box and a third shielding box, the first 3-frequency MESH node, the second 3-frequency MESH node and the third 3-frequency MESH node are respectively placed in the first shielding box, the second shielding box and the third shielding box, the first 3-frequency MESH node, the second 3-frequency MESH node and the third 3-frequency MESH node are respectively connected with the first shielding box, the second shielding box and the third shielding box, and the first shielding box, the second shielding box and the third shielding box are respectively connected with the first shielding box, the second shielding box and the third shielding box, The third shielding box is respectively connected with the first PC client, the second PC client and the third PC client, and the step attenuator is respectively connected with the first shielding box, the second shielding box and the third shielding box; and the PC client side is respectively provided with an iperf performance testing tool and a serial port communication tool.
As a further improvement of the present invention, the first shielding box, the second shielding box and the third shielding box are respectively provided with a radio frequency port, the 3-frequency MESH product MESH path selection correctness testing system comprises a feeder line and a radio frequency antenna, one end of the radio frequency port is provided with the radio frequency antenna, and the other end of the radio frequency port is connected with the step attenuator through the feeder line.
As a further improvement of the present invention, the step attenuator comprises an input port a, an input port B, an output port a, an output port B, an input port C, an input port D, an output port C, and an output port D, and the first shielding box is connected to the input port a and the input port B of the step attenuator, respectively; the second shielding box is respectively connected with the output port A, the output port B, the input port C and the input port D of the step attenuator; and the third shielding box is respectively connected with the C output port and the D output port of the stepping attenuator.
As a further improvement of the present invention, the feeder includes a first feeder, a second feeder, a third feeder, and a fourth feeder, the rf port on the first shielding box is connected to the input port a and the input port B of the step attenuator through the first feeder, the rf port on the second shielding box is connected to the output port a and the output port B of the step attenuator through the second feeder, the rf port on the second shielding box is connected to the input port C and the input port D of the step attenuator through the third feeder, and the third shielding box is connected to the output port C and the output port D of the step attenuator through the fourth feeder.
As a further improvement of the present invention, the 3-frequency MESH product MESH path selection correctness testing system includes an ethernet network card and a network cable, the ethernet network card is respectively installed on the first PC client, the second PC client and the third PC client, and the first PC client, the second PC client and the third PC client are respectively connected to the first shielding box, the second shielding box and the third shielding box through the network cable.
As a further improvement of the invention, the 3-frequency MESH product MESH path selection correctness test system comprises a double-frequency wireless network card and a USB extension line, wherein the double-frequency wireless network card is installed on the second shielding box, and the USB extension line is used for connecting the second PC client side and the double-frequency wireless network card.
As a further improvement of the present invention, the ethernet network card of the first PC client is connected to the LAN port of the first 3-frequency MESH node through the first shielded box, and a static ip address is configured: 192.168.5.100, subnet mask is: 255.255.255.0, the gateway is: 192.168.5.1;
the ethernet network card of the second PC client is connected to the LAN port of the second 3-frequency MESH node through the second shield box, and configures a static ip address: 192.168.5.200, subnet mask is: 255.255.255.0, the gateway is: 192.168.5.1;
the Ethernet card of the third PC client is connected with the LAN port of the third 3-frequency MESH node through the third shielding box, and a static ip address is configured: 192.168.6.200, subnet mask is: 255.255.255.0, the gateway is: 192.168.6.1, respectively;
the wired ip addresses and the wireless ip addresses of the first PC client and the second PC client can both ping mutually.
As a further improvement of the present invention, the dual-frequency wireless network card is a 2T2R dual-frequency wireless network card, and the ethernet network card is a gigabit ethernet network card; the number of the radio frequency antennas is eight, the first shielding box and the third shielding box are respectively provided with two, and the second shielding box is provided with four.
The MESH path selection correctness test system for the 3-frequency MESH product comprises a shielded room, and the MESH path selection correctness test system for the 3-frequency MESH product is placed in the shielded room.
The invention also discloses a method for testing the MESH path selection correctness of the 3-frequency MESH product, which comprises the following steps:
under different attenuation values, the method comprises the following steps of:
step S1: the first PC client and the second PC client are respectively provided with an iperf performance testing tool and a serial port communication tool;
step S2: placing the first 3-frequency MESH node in a first shielding box, and connecting a LAN port of the first 3-frequency MESH node and a network port of the first shielding box by using a network cable;
step S3: placing the second 3-frequency MESH node in a second shielding box, and connecting the LAN port of the second 3-frequency MESH node and the network port of the second shielding box by using a network cable;
step S4: the first shielding box and the second shielding box are respectively provided with a radio frequency antenna, a radio frequency port of the first shielding box is respectively connected with an input port A and an input port B of the stepping attenuator by using a first feeder line, and a radio frequency port of the second shielding box is connected with an output port A and an output port B of the stepping attenuator by using a second feeder line;
step S5: the first PC client and the second PC client are respectively connected to the network ports of the first shielding box and the second shielding box by using network cables, and the Ethernet network cards are all set as address acquisition addresses;
step S6: setting the attenuation value of the stepping attenuator to enable the attenuation between nodes to be about-50 dBm;
step S7: using iperf software to run between a first PC client and a second PC client, and recording the Mesh path selection, the TX value, the RX value, the TRX value, the attenuation value, the signal strength between a first 3-frequency MESH node and a second 3-frequency MESH node of the 3-frequency Mesh node at the moment;
step S8: the Mesh path of the 3-frequency Mesh node is forced to be an unselected path, between a first client and a second client, including the wired network card race flow of the first PC client and the second PC client, and the Mesh path, the TX value, the RX value and the TRX value, and the signal strength between the first 3-frequency Mesh node and the second 3-frequency Mesh node are recorded;
step S9: repeating the steps S6-S8, increasing attenuation values according to 3dB step length, and testing Mesh path selection of the 3-frequency Mesh nodes under different attenuation values;
under the condition that the Wifi terminal is connected with the nodes, the correctness of the path selection between the Mesh nodes is tested:
the first step is as follows: the first PC client and the second PC client are respectively provided with an iperf performance testing tool and a serial port communication tool;
the second step is as follows: placing the first 3-frequency MESH node in a first shielding box, and connecting a LAN port of the first 3-frequency MESH node and a network port of the first shielding box by using a network cable;
the third step: placing the second 3-frequency MESH node in another second shielded box;
the fourth step: the first shielding box and the second shielding box are respectively provided with a radio frequency antenna, a radio frequency port of the first shielding box is respectively connected with an input port A and an input port B of the step attenuator by using a first feeder line, a radio frequency port of the second shielding box is respectively connected with an output port A and an output port B of the step attenuator by using a second feeder line, and the signal intensity of the first 3-frequency MESH node and the signal intensity of the second 3-frequency MESH node are set to be about-65 dBm;
the fifth step: the first PC client is connected to a network port of the first shielding box by using a network cable, a wireless network card of the second PC client is connected with wifi signals of the second 3-frequency MESH nodes, and Ethernet network cards are all set to automatically acquire addresses;
a sixth step: setting a wifi frequency band 1 of a wireless network card of a second PC client side connected with a second 3-frequency MESH node, using iperf software to run between the first PC client side and the second PC client side, and recording MESH path selection of the 3-frequency MESH node, a frequency band connected with the wireless network card of the second PC client side, a TX value, an RX value and a TRX value; the Mesh path of the 3-frequency Mesh node is forced to be an unselected path, then the flow is carried out, and data are recorded;
a seventh step of: repeating the sixth step, setting a wireless network card of a second PC client side to be connected with the wifi frequency band 2 of the second 3-frequency MESH node, then carrying out streaming, and recording the selection of the MESH path of the node under the condition that the wireless terminal is connected with different frequency bands;
external interference signals, and the correctness test of the path selection between Mesh nodes:
step Y1: the first PC client and the second PC client are respectively provided with an iperf performance testing tool and a serial port communication tool;
step Y2: placing the first 3-frequency MESH node in a first shielding box, and connecting the LAN port of the first 3-frequency MESH node and the network port of the first shielding box by using a network cable;
step Y3: placing the second 3-frequency MESH node in another second shielding box, and connecting the LAN port of the second 3-frequency MESH node and the network port of the second shielding box by using a network cable;
step Y4: 2 radio frequency antennas are respectively installed on a first shielding box and a second shielding box, a radio frequency port of the first shielding box is respectively connected with an input port A and an input port B of the stepping attenuator by using a first feeder line, a radio frequency port of the second shielding box is connected with an output port A and an output port B of the stepping attenuator by using a second feeder line, and the signal intensity between two Mesh nodes is set to be about-65 dBm;
step Y5: the first PC client, the second PC client and the third PC client are respectively connected to the network ports of the first shielding box, the second shielding box and the third shielding box by using network cables, and the Ethernet network cards are all set to automatically acquire addresses;
step Y6: radio frequency antennas are respectively installed on a second shielding box and a third shielding box, the radio frequency port of the second shielding box is respectively connected with the C input port and the D input port of the step attenuator through a third feeder line, and the third shielding box is respectively connected with the C output port and the D output port of the step attenuator through a fourth feeder line;
step Y7: the serial port checks MESH default paths of a first 3-frequency MESH node and a second 3-frequency MESH node of the nodes, and records channels of frequency bands to which the MESH default paths belong;
step Y8: setting a wifi channel of a third 3-frequency MESH node of the node to be the same as MESH default path channels of the first 3-frequency MESH node and the second 3-frequency MESH node;
step Y9: setting a wireless network card of a second PC client side to be connected with wifi of a third 3-frequency MESH node, wherein the second PC client side and the third PC client side use iperf software to run, and the size of the run is changed according to product positioning;
step Y10: recording the selection of the MESH path between the first 3-frequency MESH node and the second 3-frequency MESH node at the moment, carrying out flow running between the first PC client and the second PC client after the wired network card of the first PC client and the wired network card of the second PC client run off, recording the flow size, forcing the MESH paths of the first 3-frequency MESH node and the second 3-frequency MESH node to be unselected paths, recording the flow size, and verifying the correctness of the MESH path of the MESH node under the action of an interference signal;
step Y11: and repeating the step Y8-the step Y10, modifying the wifi channel of the third 3-frequency MESH node in the step Y8 to be the adjacent channel of the MESH default path channel of the first 3-frequency MESH node and the second 3-frequency MESH node, performing stream running, and verifying the correctness of the MESH path of the MESH node under the action of the interference signal.
The invention has the beneficial effects that: 1. the method comprises the steps of testing the wireless forwarding performance of two 3-frequency MESH nodes by adjusting the attenuation value of a stepping attenuator to determine the correctness of MESH path selection between the 3-frequency MESH nodes; 2. the method simulates the actual user using environment through the same frequency and adjacent frequency signal interference of the wireless stream-running structure, and verifies the correctness of path selection of the Mesh node under different interferences; 3. according to the invention, through the isolation of the shielding box and the shielding room, external environment interference factors are reduced, and the accuracy of a test result is greatly improved; by controlling the attenuation value of the stepping attenuator, the accuracy and stability of Mesh path selection under the condition of different attenuation values can be tested; 4. the invention preempts the air interface resource by constructing the interference signal, simulates the actual user environment by limiting different interference sizes, and verifies the correctness of the Mesh path selection of the Mesh node under different interferences.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
As shown in fig. 1, the invention discloses a system for testing MESH path selection correctness of a 3-frequency MESH product, which comprises three PCP clients, three 3-frequency MESH nodes, a step attenuator 7 and three shielding boxes, wherein the PCP clients comprise a first PC client 1, a second PC client 2 and a third PC client 3, the 3-frequency MESH nodes comprise a first 3-frequency MESH node 4, a second 3-frequency MESH node 5 and a third 3-frequency MESH node 6, the shielding boxes comprise a first shielding box 8, a second shielding box 9 and a third shielding box 10, the first 3-frequency MESH node 4, the second 3-frequency MESH node 5 and the third 3-frequency MESH node 6 are respectively placed in the first shielding box 8, the second shielding box 9 and the third shielding box 10, and the first 3-frequency MESH node 4, the second 3-frequency MESH node 5 and the third 3-frequency MESH node 6 are respectively connected with the first shielding box 8, The second shielding box 9 and the third shielding box 10 are connected, the first shielding box 8, the second shielding box 9 and the third shielding box 10 are respectively connected with the first PC client 1, the second PC client 2 and the third PC client 3, and the step attenuator 7 is respectively connected with the first shielding box 8, the second shielding box 9 and the third shielding box 10; and the PCP client side is respectively provided with an iperf performance testing tool and a serial port communication tool.
The first shielding box 8, the second shielding box 9 and the third shielding box 10 are respectively provided with a radio frequency port, the 3-frequency MESH product MESH path selection correctness test system comprises a feeder line and a radio frequency antenna 20, the radio frequency antenna 20 is installed at one end of the radio frequency port, and the other end of the radio frequency port is connected with the stepping attenuator 7 through the feeder line.
The step attenuator 7 comprises an input port A30, an input port B11, an output port A13, an output port B14, an input port C12, an input port D16, an output port C17 and an output port D18, and the first shielding box 8 is respectively connected with the input port A10 and the input port B11 of the step attenuator 7; the second shielding box 9 is respectively connected with the output port a 13, the output port B14, the input port C12 and the input port D16 of the step attenuator 7; the third shielding box 10 is connected to the C output port 17 and the D output port 18 of the step attenuator 7, respectively.
The feeder lines comprise a first feeder line 31, a second feeder line 32, a third feeder line 15 and a fourth feeder line 19, the radio frequency port on the first shielding box 8 is respectively connected with the input port a 30 and the input port B11 of the step attenuator 7 through the first feeder line 31, the radio frequency port on the second shielding box 9 is respectively connected with the output port a of the step attenuator 7 through the second feeder line 32, and the output port B, the first 3-frequency MESH node 4 and the second 3-frequency MESH node 5 transmit wireless signals through the feeder lines between the radio frequency antenna 20 in the shielding box and the shielding box respectively; the radio frequency port of the second shielding box 9 is connected to the C input port 12 and the D input port 16 of the step attenuator 7 through the third feeder 15, and the third shielding box 10 is connected to the C output port 17 and the D output port 18 of the step attenuator 7 through the fourth feeder 19.
The MESH path selection correctness test system for the 3-frequency MESH product comprises an Ethernet network card and a network cable, wherein the Ethernet network card is respectively installed on the first PC client side 1, the second PC client side 2 and the third PC client side 3, and the first PC client side 1, the second PC client side 2 and the third PC client side 3 are respectively connected with the first shielding box 8, the second shielding box 9 and the third shielding box 10 through the network cable.
The MESH path selection correctness test system for the 3-frequency MESH product comprises a double-frequency wireless network card 21 and a USB extension line 22, wherein the double-frequency wireless network card 21 is installed on the second shielding box 9, and the USB extension line 22 is used for connecting a USB3.0 interface of the second PC client side 2 with the double-frequency wireless network card 21.
The ethernet network card of the first PC client 1 is connected to the LAN port of the first 3-frequency MESH node 4 through the first shielding box 8, and configures a static ip address: 192.168.5.100, subnet mask is: 255.255.255.0, the gateway is: 192.168.5.1;
the ethernet network card of the second PC client 2 is connected to the LAN port of the second 3-frequency MESH node 5 through the second shielding box 9, and configures a static ip address: 192.168.5.200, subnet mask is: 255.255.255.0, the gateway is: 192.168.5.1;
the ethernet card of the third PC client 3 is connected to the LAN port of the third 3-frequency MESH node 6 (which may be replaced by another wifi router) through the third shielding box 10, and configures a static ip address: 192.168.6.200, subnet mask is: 255.255.255.0, the gateway is: 192.168.6.1, respectively; the wired ip addresses and the wireless ip addresses of the first PC client 1 and the second PC client 2 can both ping mutually.
The dual-frequency wireless network card is a 2T2R dual-frequency wireless network card, and the Ethernet network card is a gigabit Ethernet network card; the number of the radio frequency antennas 20 is eight, two first shielding boxes 8 and two third shielding boxes 10 are respectively arranged on the first shielding box and the third shielding box, and four second shielding boxes 9 are arranged on the second shielding box. The shielding box is provided with a network port, the network port comprises a first network port and a second network port, the number of the network cables is six, three 3-frequency MESH nodes are placed in the shielding box, and the three 3-frequency MESH nodes are respectively connected with the first network ports of the three shielding boxes through the three network cables; the three PC client sides are provided with gigabit Ethernet network cards and are connected to the second network ports of the three shielding boxes by using three network cables respectively.
The MESH path selection correctness test system for the 3-frequency MESH product comprises a shielded room, and the MESH path selection correctness test system for the 3-frequency MESH product is placed in the shielded room.
The invention discloses a method for testing the MESH path selection correctness of a 3-frequency MESH product, which comprises the following steps of:
under different attenuation values, the method comprises the following steps of:
step S1: the first PC client 1 and the second PC client 2 are respectively provided with an iperf performance testing tool and a serial port communication tool;
step S2: placing the first 3-frequency MESH node 4 in a first shielding box 8, and connecting the LAN port of the first 3-frequency MESH node 4 and the network port of the first shielding box 8 by using a network cable;
step S3: placing the second 3-frequency MESH node 5 in a second shielding box 9, and connecting the LAN port of the second 3-frequency MESH node 5 and the network port of the second shielding box 9 by using a network cable;
step S4: radio frequency antennas are respectively installed on the first shielding box 8 and the second shielding box 9, a radio frequency port of the first shielding box 8 is respectively connected with an input port A and an input port B of the stepping attenuator 7 by using a first feeder 31, and a radio frequency port of the second shielding box 9 is connected with an output port A and an output port B of the stepping attenuator 7 by using a second feeder 32;
step S5: the first PC client 1 and the second PC client 2 are respectively connected to the network ports of the first shielding box 8 and the second shielding box 9 by using network cables, and Ethernet network cards are all set as address acquisition addresses;
step S6: setting the attenuation value of the stepping attenuator 7 to enable the attenuation between the nodes to be about-50 dBm;
step S7: using iperf software to run between the first PC client 1 and the second PC client 2, and recording the Mesh path selection, the TX value, the RX value, the TRX value and the attenuation value of the 3-frequency Mesh node at the moment, and the signal strength between the first MESH node 4 and the second MESH node 5;
step S8: the Mesh path of the 3-frequency Mesh node is forced to be an unselected path, between the first client 1 and the second client 2, the wired network card race flow of the first PC client 1 and the second PC client 2 is included, the Mesh path, the TX value, the RX value and the TRX value are recorded, and the signal strength between the first 3-frequency Mesh node 4 and the second 3-frequency Mesh node 5 is recorded;
step S9: repeating the steps S6-S8, increasing attenuation values according to 3dB step length, and testing Mesh path selection of the 3-frequency Mesh nodes under different attenuation values;
under the condition that the Wifi terminal is connected with the nodes, the correctness of the path selection between the Mesh nodes is tested:
the first step is as follows: the first PC client 1 and the second PC client 2 are respectively provided with an iperf performance testing tool and a serial port communication tool;
the second step is as follows: placing the first 3-frequency MESH node 4 in a first shielding box 8, and connecting a LAN port of the first 3-frequency MESH node 4 and a network port of the first shielding box 8 by using a network cable;
the third step: placing the second 3-frequency MESH node 5 in another second shielded box 9;
the fourth step: radio frequency antennas are respectively installed on the first shielding box 8 and the second shielding box 9, a radio frequency port of the first shielding box 8 is respectively connected with an input port A and an input port B of the stepping attenuator 7 by using a first feeder line 31, a radio frequency port of the second shielding box 9 is respectively connected with an output port A and an output port B of the stepping attenuator 7 by using a second feeder line 32, and the signal intensity of the first 3-frequency MESH node 4 and the signal intensity of the second 3-frequency MESH node 5 are set to be about-65 dBm;
the fifth step: the first PC client 1 is connected to a network port of the first shielding box 8 by using a network cable, a wireless network card of the second PC client 2 is connected with wifi signals of the second 3-frequency MESH node 5, and Ethernet network cards are all set to automatically acquire addresses;
a sixth step: setting a wifi frequency band 1 of a wireless network card of a second PC client 2 connected with a second 3-frequency MESH node 5, using iperf software to run between the first PC client 1 and the second PC client 2, and recording MESH path selection of the 3-frequency MESH node, a frequency band connected with the wireless network card of the second PC client 2, a TX value, an RX value and a TRX value; the Mesh path of the 3-frequency Mesh node is forced to be an unselected path, then the flow is carried out, and data are recorded;
a seventh step of: repeating the sixth step, setting a wireless network card of a second PC client 2 to be connected with the wifi frequency band 2 of a second 3-frequency MESH node 5, then carrying out streaming, and recording the selection of the node MESH path under the condition that the wireless terminal is connected with different frequency bands;
external interference signals, and the correctness test of the path selection between Mesh nodes:
step Y1: the first PC client 1 and the second PC client 2 are respectively provided with an iperf performance testing tool and a serial port communication tool;
step Y2: placing the first 3-frequency MESH node 4 in a first shielding box 8, and connecting a LAN port of the first 3-frequency MESH node 4 and a network port of the first shielding box 8 by using a network cable;
step Y3: placing the second 3-frequency MESH node 5 into another second shielding box 9, and connecting the LAN port of the second 3-frequency MESH node 5 and the network port of the second shielding box 9 by using a network cable;
step Y4: 2 radio frequency antennas are respectively installed on a first shielding box 8 and a second shielding box 9, a radio frequency port of the first shielding box 8 is respectively connected with an input port A and an input port B of the stepping attenuator 7 by using a first feeder 31, a radio frequency port of the second shielding box 9 is connected with an output port A and an output port B of the stepping attenuator 7 by using a second feeder 32, and the signal intensity between two Mesh nodes is set to be about-65 dBm;
step Y5: the first PC client 1, the second PC client 2 and the third PC client 3 are respectively connected to the network ports of the first shielding box 8, the second shielding box 9 and the third shielding box 10 by using network cables, and the Ethernet network cards are all set to automatically acquire addresses;
step Y6: radio frequency antennas are respectively installed on a second shielding box 9 and a third shielding box 10, the radio frequency port of the second shielding box 9 is respectively connected with the C input port 12 and the D input port 16 of the step attenuator through a third feeder 15, and the third shielding box 10 is respectively connected with the C output port 17 and the D output port 18 of the step attenuator through a fourth feeder 19;
step Y7: the serial port checks MESH default paths of a first 3-frequency MESH node 4 and a second 3-frequency MESH node 5 of nodes, and records channels of frequency bands to which the MESH default paths belong;
step Y8: setting the wifi channel of the third 3-frequency MESH node 6 of the node to be the same as the MESH default path channels of the first 3-frequency MESH node 4 and the second 3-frequency MESH node 5;
step Y9: setting a wireless network card of a second PC client 2 to be connected with wifi of a third 3-frequency MESH node 6, wherein the second PC client 2 and the third PC client 3 use iperf software to run, and the size of the run can be changed according to product positioning;
step Y10: recording the selection of the MESH path between the first 3-frequency MESH node 4 and the second 3-frequency MESH node 5 at the moment, the leakage of the wired network card of the first PC client 1 and the second PC client 2, recording the flow size, forcing the MESH path of the first 3-frequency MESH node 4 and the second 3-frequency MESH node 5 to be an unselected path, then performing leakage between the first PC client 1 and the second PC client 2, recording the flow size, and verifying the correctness of the MESH path under the action of an interference signal by the MESH node;
step Y11: and repeating the step Y8-the step Y10, modifying the wifi channel of the third 3-frequency MESH node 6 in the step Y8 to be the adjacent channel of the MESH default path channel of the first 3-frequency MESH node 4 and the second 3-frequency MESH node 5, performing stream running, and verifying the correctness of the MESH path of the MESH node under the action of the interference signal.
The invention has the beneficial effects that: 1. the method comprises the steps of testing the wireless forwarding performance of two 3-frequency MESH nodes by adjusting the attenuation value of a stepping attenuator to determine the correctness of MESH path selection between the 3-frequency MESH nodes; 2. the method simulates the actual user using environment through the same frequency and adjacent frequency signal interference of the wireless stream-running structure, and verifies the correctness of path selection of the Mesh node under different interferences; 3. according to the invention, through the isolation of the shielding box and the shielding room, the external environment interference factors are reduced, and the accuracy of the test result is greatly improved; by controlling the attenuation value of the stepping attenuator, the accuracy and stability of Mesh path selection under the condition of different attenuation values can be tested; 4. the invention preempts the air interface resource by constructing the interference signal, simulates the actual user environment by limiting different interference sizes, and verifies the correctness of the Mesh path selection of the Mesh node under different interferences.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. A test system of 3 frequency MESH products is characterized in that: the multi-frequency MESH system comprises a PC client, 3-frequency MESH nodes, a stepping attenuator (7) and a shielding box, wherein the PC client comprises a first PC client (1), a second PC client (2) and a third PC client (3), the 3-frequency MESH nodes comprise a first 3-frequency MESH node (4), a second 3-frequency MESH node (5) and a third 3-frequency MESH node (6), the shielding box comprises a first shielding box (8), a second shielding box (9) and a third shielding box (10), the first 3-frequency MESH nodes (4), the second 3-frequency MESH nodes (5) and the third 3-frequency MESH nodes (6) are respectively placed in the first shielding box (8), the second shielding box (9) and the third shielding box (10), and the first 3-frequency MESH nodes (4), the second 3-frequency MESH nodes (5) and the third 3-frequency MESH nodes (6) are respectively in the first shielding box (8), the second shielding box (9) and the third shielding box (10), The second shielding box (9) and the third shielding box (10) are connected, the first shielding box (8), the second shielding box (9) and the third shielding box (10) are respectively connected with the first PC client (1), the second PC client (2) and the third PC client (3), and the step attenuator (7) is respectively connected with the first shielding box (8), the second shielding box (9) and the third shielding box (10); and the PC client side is respectively provided with an iperf performance testing tool and a serial port communication tool.
2. The test system of claim 1, wherein: the first shielding box (8), the second shielding box (9) and the third shielding box (10) are respectively provided with a radio frequency port, the 3-frequency MESH product MESH path selection correctness testing system comprises a feeder line and a radio frequency antenna (20), the radio frequency antenna (20) is installed at one end of the radio frequency port, and the other end of the radio frequency port is connected with the stepping attenuator (7) through the feeder line.
3. The test system of claim 2, wherein: the step attenuator (7) comprises an input port A (30), an input port B (11), an output port A (13), an output port B (14), an input port C (12), an input port D (16), an output port C (17) and an output port D (18), and the first shielding box (8) is respectively connected with the input port A (30) and the input port B (11) of the step attenuator (7); the second shielding box (9) is respectively connected with the A output port (13), the B output port (14), the C input port (12) and the D input port (16) of the step attenuator (7); and the third shielding box (10) is respectively connected with the C output port (17) and the D output port (18) of the stepping attenuator (7).
4. The test system of claim 3, wherein: the feeder lines comprise a first feeder line (31), a second feeder line (32), a third feeder line (15) and a fourth feeder line (19), the radio frequency port on the first shielding box (8) is respectively connected with the input port A (30) and the input port B (11) of the step attenuator (7) through the first feeder line (31), the radio frequency port on the second shielding box (9) is respectively connected with the output port A of the step attenuator (7) through the second feeder line (32), the output port B is arranged, the radio frequency port on the second shielding box (9) is connected with the input port C (12) and the input port D (16) of the step attenuator (7) through the third feeder line (15), and the third shielding box (10) is respectively connected with the output port C (17) and the output port D (16) of the step attenuator (7) through the fourth feeder line (19), The D output port (18).
5. The test system of claim 2, wherein: the MESH path selection correctness test system for the 3-frequency MESH product comprises an Ethernet network card and a network cable, wherein the Ethernet network card is respectively installed on the first PC client (1), the second PC client (2) and the third PC client (3), and the first PC client (1), the second PC client (2) and the third PC client (3) are respectively connected with the first shielding box (8), the second shielding box (9) and the third shielding box (10) through the network cable.
6. The test system of claim 5, wherein: the MESH path selection correctness test system for the 3-frequency MESH product comprises a double-frequency wireless network card (21) and a USB extension line (22), wherein the double-frequency wireless network card (21) is installed on a second shielding box (9), and the USB extension line (22) is used for connecting a second PC client (2) and the double-frequency wireless network card (21).
7. The test system of claim 4, wherein:
the Ethernet network card of the first PC client (1) is connected with the LAN port of the first 3-frequency MESH node (4) through the first shielding box (8), and a static ip address is configured: 192.168.5.100, subnet mask is: 255.255.255.0, the gateway is: 192.168.5.1;
the Ethernet network card of the second PC client (2) is connected with the LAN port of the second 3-frequency MESH node (5) through the second shielding box (9), and a static ip address is configured: 192.168.5.200, subnet mask is: 255.255.255.0, the gateway is: 192.168.5.1;
the Ethernet network card of the third PC client (3) is connected with the LAN port of the third 3-frequency MESH node (6) through the third shielding box (10), and a static ip address is configured: 192.168.6.200, subnet mask is: 255.255.255.0, the gateway is: 192.168.6.1;
the wired ip address and the wireless ip of the first PC client (1) and the second PC client (2) can both ping mutually.
8. The test system of claim 6, wherein: the dual-frequency wireless network card is a 2T2R dual-frequency wireless network card, and the Ethernet network card is a gigabit Ethernet network card; the number of the radio frequency antennas (20) is eight, the first shielding box (8) and the third shielding box (10) are respectively provided with two, and the second shielding box (9) is provided with four.
9. The test system of claim 1, wherein: the 3-frequency MESH product MESH path selection correctness testing system comprises a shielded room, and the 3-frequency MESH product MESH path selection correctness testing system of claims 1-8 is placed in the shielded room.
10. A method for testing the MESH path selection correctness of a 3-frequency MESH product is characterized by comprising the following steps of:
under different attenuation values, the method comprises the following steps of:
step S1: the first PC client (1) and the second PC client (2) are respectively provided with an iperf performance testing tool and a serial port communication tool;
step S2: placing the first 3-frequency MESH node (4) in a first shielding box (8), and connecting a LAN port of the first 3-frequency MESH node (4) and a network port of the first shielding box (8) by using a network cable;
step S3: placing the second 3-frequency MESH node (5) in a second shielding box (9), and connecting a LAN port of the second 3-frequency MESH node (5) with a network port of the second shielding box (9) by using a network cable;
step S4: radio frequency antennas are respectively installed on the first shielding box (8) and the second shielding box (9), a radio frequency port of the first shielding box (8) is respectively connected with an input port A and an input port B of the stepping attenuator (7) through a first feeder (31), and a radio frequency port of the second shielding box (9) is connected with an output port A and an output port B of the stepping attenuator (7) through a second feeder (32);
step S5: the first PC client (1) and the second PC client (2) are respectively connected to the network ports of the first shielding box (8) and the second shielding box (9) by using network cables, and Ethernet network cards are all set as address acquisition addresses;
step S6: setting the attenuation value of the stepping attenuator (7) to enable the attenuation between the nodes to be about-50 dBm;
step S7: iperf software is used for flow running between the first PC client (1) and the second PC client (2), and the Mesh path selection, the TX value, the RX value, the TRX value and the attenuation value of the 3-frequency Mesh node at the moment, and the signal strength between the first 3-frequency Mesh node (4) and the second 3-frequency Mesh node (5) are recorded;
step S8: the Mesh path of the 3-frequency Mesh node is forced to be an unselected path, between a first client (1) and a second client (2), including the wired network card race flow of the first PC client (1) and the second PC client (2), the Mesh path, a TX value, an RX value and a TRX value are recorded, and the signal strength between a first 3-frequency Mesh node (4) and a second 3-frequency Mesh node (5) is recorded;
step S9: repeating the steps S6-S8, increasing attenuation values according to 3dB step length, and testing Mesh path selection of the 3-frequency Mesh nodes under different attenuation values;
under the condition that the Wifi terminal is connected with the nodes, the correctness of the path selection between the Mesh nodes is tested:
the first step is as follows: the first PC client (1) and the second PC client (2) are respectively provided with an iperf performance testing tool and a serial port communication tool;
the second step is as follows: placing the first 3-frequency MESH node (4) in a first shielding box (8), and connecting a LAN port of the first 3-frequency MESH node (4) and a network port of the first shielding box (8) by using a network cable;
the third step: placing the second 3-frequency MESH node (5) in another second shielded box (9);
the fourth step: radio frequency antennas are respectively installed on a first shielding box (8) and a second shielding box (9), a radio frequency port of the first shielding box (8) is respectively connected with an input port A and an input port B of a stepping attenuator (7) through a first feeder line (31), a radio frequency port of the second shielding box (9) is respectively connected with an output port A and an output port B of the stepping attenuator (7) through a second feeder line (32), and the signal strength of a first 3-frequency MESH node (4) and a second 3-frequency MESH node (5) is set to be about-65 dBm;
the fifth step: the first PC client (1) is connected to a network port of the first shielding box (8) by using a network cable, a wireless network card of the second PC client (2) is connected with a wifi signal of the second 3-frequency MESH node (5), and Ethernet network cards are all set to automatically acquire addresses;
a sixth step: setting a wifi frequency range 1 of a second 3-frequency MESH node (5) connected with a wireless network card of a second PC client (2), using iperf software to run between the first PC client (1) and the second PC client (2), and recording the MESH path selection of the 3-frequency MESH node, the frequency range connected with the wireless network card of the second PC client (2), a TX value, an RX value and a TRX value; the Mesh path of the 3-frequency Mesh node is forced to be an unselected path, then streaming is carried out, and data are recorded;
a seventh step of: repeating the sixth step, setting a wifi frequency band 2 of a second 3-frequency MESH node (5) connected with a wireless network card of a second PC client (2) to run, and recording the selection of a node MESH path under the condition that the wireless terminal is connected with different frequency bands;
external interference signals, and the correctness test of the path selection between Mesh nodes:
step Y1: the first PC client (1) and the second PC client (2) are respectively provided with an iperf performance testing tool and a serial port communication tool;
step Y2: placing a first 3-frequency MESH node (4) in a first shielding box (8), and connecting a LAN port of the first 3-frequency MESH node (4) and a network port of the first shielding box (8) by using a network cable;
step Y3: placing the second 3-frequency MESH node (5) in another second shielding box (9), and connecting the LAN port of the second 3-frequency MESH node (5) with the network port of the second shielding box (9) by using a network cable;
step Y4: 2 radio frequency antennas are respectively installed on a first shielding box (8) and a second shielding box (9), a radio frequency port of the first shielding box (8) is respectively connected with an input port A and an input port B of a step attenuator (7) by using a first feeder line (31), a radio frequency port of the second shielding box (9) is connected with an output port A and an output port B of the step attenuator (7) by using a second feeder line (32), and the signal intensity between two Mesh nodes is set to be about-65 dBm;
step Y5: a first PC client (1), a second PC client (2) and a third PC client (3) are respectively connected to the network ports of a first shielding box (8), a second shielding box (9) and a third shielding box (10) by using network cables, and Ethernet network cards are all set to automatically acquire addresses;
step Y6: radio frequency antennas are respectively installed on a second shielding box (9) and a third shielding box (10), the radio frequency port of the second shielding box (9) is respectively connected with a C input port (12) and a D input port (16) of the stepping attenuator through a third feeder (15), and the third shielding box (10) is respectively connected with a C output port (17) and a D output port (18) of the stepping attenuator through a fourth feeder (19);
step Y7: the serial port checks MESH default paths of a first 3-frequency MESH node (4) and a second 3-frequency MESH node (5) of nodes, and records channels of frequency bands to which the MESH default paths belong;
step Y8: setting the wifi channel of the third 3-frequency MESH node (6) of the node to be the same as the MESH default path channels of the first 3-frequency MESH node (4) and the second 3-frequency MESH node (5);
step Y9: setting wifi of a third 3-frequency MESH node (6) connected with a wireless network card of a second PC client (2), wherein the second PC client (2) and the third PC client (3) use iperf software to run, and the size of the run is changed according to product positioning;
step Y10: recording the selection of a MESH path between a first 3-frequency MESH node (4) and a second 3-frequency MESH node (5), the leakage of a wired network card of a first PC client (1) and a second PC client (2), recording the flow size, forcing the leakage of the MESH paths of the first 3-frequency MESH node (4) and the second 3-frequency MESH node (5) to be unselected paths, recording the flow size, and verifying the correctness of the MESH path of the MESH node under the action of an interference signal;
step Y11: and repeating the step Y8-the step Y10, modifying the wifi channel of the third 3-frequency MESH node (6) in the step Y8 to be the adjacent channel of the MESH default path channel of the first 3-frequency MESH node (4) and the second 3-frequency MESH node (5), performing flow running, and verifying the correctness of the MESH path of the MESH node under the action of the interference signal.
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