CN-117614568-B - Interference performance test system

CN117614568BCN 117614568 BCN117614568 BCN 117614568BCN-117614568-B

Abstract

The application relates to an interference performance test system which comprises an upper computer, a first simulation device, a second simulation device and a plurality of directional antennas, wherein the first simulation device establishes a tested communication link with tested equipment through the directional antennas connected with the first simulation device, the second simulation device establishes an interference communication link with the tested equipment through the directional antennas connected with the second simulation device, the second simulation device is also used for establishing communication links with other simulation devices so as to simulate communication among the interference equipment, and the upper computer is connected with the first simulation device, the second simulation device and the tested equipment and is used for configuring communication simulation parameters of the first simulation device and the second simulation device and obtaining tested communication data of the tested communication link and interference communication data of the interference communication link and determining an interference performance test result of the tested equipment according to the tested communication data and the interference communication data. The system is close to the actual situation of actual business application.

Inventors

LIU BINHUI
ZHAO KAI
Huang Lindie
XU HUAWEI

Assignees

中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室））

Dates

Publication Date: 20260512
Application Date: 20231128

Claims (10)

1. The system is characterized by comprising an upper computer, a first simulation device, a second simulation device, a plurality of directional antennas, a first multipath simulator and a second multipath simulator, wherein the first simulation device and the second simulation device are connected with the directional antennas; the first simulation device is used for simulating target equipment which is communicated with the tested equipment, and a tested communication link between the first simulation device and the tested equipment is established through a directional antenna which is connected with the first simulation device; the second simulation device is used for simulating interference equipment causing communication interference to the tested equipment, establishing an interference communication link with the tested equipment through a directional antenna connected with the second simulation device, and establishing communication links with other simulation devices to simulate the communication between the interference equipment; The upper computer is connected with the first simulation device, the second simulation device and the tested equipment, and is used for configuring communication simulation parameters of the first simulation device and the second simulation device, acquiring tested communication data of the tested communication link and interference communication data of the interference communication link, and determining an interference performance test result of the tested equipment according to the tested communication data and the interference communication data; the first multipath simulator is arranged between the first simulation device and a directional antenna connected with the first simulation device and used for simulating a channel between the tested equipment and the target equipment; The second multipath simulator is arranged between the second simulation device and a directional antenna connected with the second simulation device and is used for simulating a channel between the tested equipment and the interference equipment; the upper computer is specifically configured to control the tested communication link to transmit data, and control the interference communication link to be disconnected, so as to detect first communication data corresponding to the tested communication link when the tested communication link independently transmits data; The upper computer is further used for controlling the interference communication link to transmit data and controlling the tested communication link to be disconnected so as to detect second communication data corresponding to the interference communication link under the condition that the interference communication link independently transmits data; The upper computer is further configured to control the tested communication link and the interference communication link to simultaneously transmit data, so as to detect third communication data corresponding to the tested communication link and fourth communication data corresponding to the interference communication link when the tested communication link and the interference communication link simultaneously transmit data.
2. The system according to claim 1, wherein the second analog device is adapted to establish a communication link with another second analog device, or The first simulation device is also used for simulating interference equipment causing communication interference to the tested equipment, and the second simulation device is specifically used for establishing a communication link with other second simulation devices or establishing a communication link with the first simulation device.
3. The system of claim 1, wherein the host computer is further coupled to both the first multipath emulator and the second multipath emulator; the upper computer is also used for configuring channel simulation parameters of the first multipath simulator and the second multipath simulator.
4. The system of claim 1, further comprising a power divider having an input coupled to the second analog device, a first output coupled to the second multipath simulator, and a second output coupled to other analog devices that establish a communication link with the second analog device.
5. The system of claim 1, wherein the communication data comprises throughput data; The upper computer is further configured to calculate, according to the throughput data in the first communication data and the throughput data in the third communication data, a throughput degradation rate of the measured communication link, and calculate, according to the throughput data in the second communication data and the throughput data in the fourth communication data, a throughput degradation rate of the interference communication link; The upper computer is further configured to determine an interference performance test result according to the throughput rate of the measured communication link and the throughput rate of the interference communication link.
6. The system of claim 5, wherein the communication data further comprises a communication delay; the upper computer is further configured to calculate, according to the communication delay in the first communication data and the communication delay in the third communication data, delay difference data of a measured communication link, and calculate, according to the communication delay in the second communication data and the communication delay in the fourth communication data, delay difference data of an interference communication link; The upper computer is specifically configured to determine an interference performance test result according to the throughput rate of the measured communication link, the throughput rate of the interfering communication link, the delay difference data of the measured communication link, and the delay difference data of the interfering communication link.
7. The system of claim 6, wherein the upper computer is specifically configured to determine an anti-interference capability test result of the device under test according to a throughput degradation rate of the communication link under test and delay difference data of the communication link under test; The upper computer is specifically configured to determine a capability test result of the tested device for external interference according to the throughput rate of the interference communication link and the delay difference data of the interference communication link.
8. The system of claim 1, further comprising a rotational stage for positioning the device under test; The rotary table can rotate 360 degrees, and is particularly used for controlling the relative orientation between the tested equipment and the plurality of oriented antennas.
9. The system of claim 8, further comprising a darkroom for placing the plurality of directional antennas, the rotary stage, and the device under test.
10. The system of claim 9, wherein the darkroom is constructed of a metallic material with wave absorbing material affixed therein.

Description

Interference performance test system Technical Field The application relates to the technical field of wireless communication testing, in particular to an interference performance testing system. Background In order to realize network coverage and improve network capacity, a large number of wireless Access Points (APs) are deployed in places with dense crowds such as malls, hotels, stations, campuses, and the like. However, the wireless spectrum resources are limited, the dense deployment of WiFi networks inevitably causes a large number of APs to have channel competition, and when the coverage of the APs has an overlapping area, interference between neighboring APs will greatly deteriorate the performance of edge users and even the entire network. Therefore, how to effectively test and evaluate the external interference and anti-interference capability of the intelligent networking equipment (comprising the terminal and the AP) has important roles in improving user experience and optimizing network structure. In the prior art, the external interference and anti-interference capability of the intelligent network connection equipment are evaluated through simulation calculation method pairs, and the specific mode is that a system model is built according to the application scene of the dense network, and scene simulation is performed, wherein the simulation is mainly evaluation algorithm strategies and logics. The interference condition under the scene is evaluated by calculating the interference signal-to-noise ratio (Signal to Interference plus Noise Ratio, SINR) of each node in the system through the modes of power control, channel allocation, time sequence processing, space optimization and the like. However, the simulation calculation method only evaluates the interference phenomenon in theory, and is insufficient in terms of radio frequency links, air interface scenes, antennas and the like, and only the interfered condition of the terminal is generally considered, the interfered condition of the AP is not considered, and consistency with the actual condition is difficult to be explained. Disclosure of Invention Based on this, it is necessary to provide a system for testing interference performance, which can consider the actual situation that the testing environment is close to the actual business application. The system comprises an upper computer, a first simulation device, a second simulation device and a plurality of directional antennas, wherein the first simulation device and the second simulation device are connected with the directional antennas, the first simulation device is used for simulating target equipment which is communicated with tested equipment, a tested communication link between the first simulation device and the tested equipment is established through the directional antennas connected with the first simulation device, the second simulation device is used for simulating interference equipment which causes communication interference to the tested equipment, an interference communication link between the second simulation device and the tested equipment is established through the directional antennas connected with the second simulation device, the second simulation device is also used for establishing communication links with other simulation devices so as to simulate communication among the interference equipment, and the upper computer is connected with the first simulation device, the second simulation device and the tested equipment, is used for configuring communication simulation parameters of the first simulation device and the second simulation device, is used for acquiring tested communication data of the tested communication link and interference communication data of the interference communication link, and determining an interference performance test result of the tested equipment according to the tested communication data and the interference communication data. In one embodiment, the second simulation device is specifically configured to establish a communication link with the other second simulation device, or the first simulation device is further configured to simulate an interference device that causes communication interference to the tested device, and the second simulation device is specifically configured to establish a communication link with the other second simulation device, or to establish a communication link with the first simulation device. In one embodiment, the system further comprises a first multipath simulator and a second multipath simulator, wherein the first multipath simulator is arranged between the first simulation device and a directional antenna connected with the first simulation device and used for simulating a channel between the tested equipment and the target equipment, and the second multipath simulator is arranged between the second simulation device and the directional antenna connected with the second simulation device and used