CN114826457B

CN114826457B - Channel simulation method, device, system, device and computer readable storage medium

Info

Publication number: CN114826457B
Application number: CN202110109142.1A
Authority: CN
Inventors: 汤中民; 吕捷; 程习学
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2023-07-11
Anticipated expiration: 2041-01-27
Also published as: CN114826457A

Abstract

The embodiment of the application discloses a channel simulation method, device, system and device and a computer readable storage medium, and belongs to the technical field of communication. In the embodiment of the application, the channel simulation device comprises a first class port, a second class port and three classes of ports, and all the ports are connected inside the channel simulation device. And coupling the interference signals injected by the three types of ports to the first type of ports and the second type of ports based on the defined interference type channel coefficients. Therefore, in the scheme, complicated external wiring is not needed, and interference can be added into the simulated channel by defining the interference channel coefficient, so that the implementation is simpler. In addition, the interference signals do not occupy one type of port and two types of ports, and the resource waste of the ports with high cost is avoided.

Description

Channel simulation method, device, system, device and computer readable storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a channel simulation method, device, system, device and computer readable storage medium.

Background

Because the wireless channel test has no repeatability, the channel problem cannot be reproduced, the performance comparison is unreliable, the actual shielding room or household environment channels have great difference, and the test results of different places are difficult to compare. Thus, channel simulators have been developed. The channel simulator is an instrument for simulating a real wireless channel, and can process wireless signals through a channel model to simulate a real scene channel so as to restore test results and duplicate channel problems. And because different wireless signal interferences exist in the actual environment, the interference scene needs to be restored in the interference test so as to achieve the purpose of the actual test. Therefore, based on the channel simulator, the channel scene with interference can be simulated by injecting the interference signal.

In the related art, as shown in fig. 1, a BS (base station) port and a User Equipment (UE) port on a channel simulator are used to access a test device (device under test, DUT) and a communication Station (STA), respectively, to simulate a communication channel between the DUT and the communication STA, and an interference signal is injected into the communication channel by using an unnecessary BS port and UE port on the channel simulator to access an Access Point (AP) and/or an interference STA. Taking the example of simultaneously accessing the interference AP and the interference STA to simulate that different interference signals exist in the actual environment, because the single-side port of the channel simulator is isolated, the interference signals should generate bidirectional interference on the communication channel to the DUT and the communication STA, so that the interference signals can couple the BS port and the UE port to generate interference to the DUT and the communication STA, and the interference signals generated by the interference AP and the interference STA need to be uniformly divided into two sides which are connected to the channel simulator through external wires.

As can be seen from fig. 1, in the related art, the interference signal needs to be divided into two parts and connected to two sides of the channel simulator through external wires, and the wire structure is complex. In addition, in the related art, the interference signals occupy the BS port and the UE port of the channel simulator, which causes resource waste of high-cost ports.

Disclosure of Invention

The embodiment of the application provides a channel simulation method, device, system, device and computer readable storage medium, in the process of channel simulation based on the provided channel simulation device, the interference device does not need complex external wiring access, does not occupy a high-cost port, and the mode of adding interference signals is simpler. The technical scheme is as follows:

in a first aspect, a channel simulation method is provided, where the channel simulation device includes a first class of ports, a second class of ports, and three classes of ports, where the first class of ports and the second class of ports are connected inside the channel simulation device, and the three classes of ports are connected inside the channel simulation device. The channels between the class I ports and the class II ports have first communication channel coefficients, the channels between the class II ports and the class II ports have second communication channel coefficients, the channels between the class III ports and the class II ports have first interference channel coefficients, and the channels between the class III ports and the class II ports have second interference channel coefficients;

the method comprises the following steps: in the channel simulation process, communication signals injected through one type of ports are coupled to two types of ports based on a first communication type channel coefficient, and interference signals injected through three types of ports are coupled to the two types of ports based on a second interference type channel coefficient; communication signals injected through the second class of ports are coupled to the first class of ports based on the second communication class channel coefficients, and interference signals injected through the three classes of ports are coupled to the first class of ports based on the first interference class channel coefficients.

Therefore, the channel simulation equipment in the scheme is provided with the port for injecting the interference signal, complicated external wiring is not needed, interference can be added into the simulated channel by defining the interference channel coefficient, and the implementation is simpler. In addition, the interference signals do not occupy one type of port and two types of ports, and the resource waste of the ports with high cost is avoided.

Optionally, the one type of port includes one or more BS ports, the two type of ports includes one or more UE ports, and the three types of ports include one or more interference ports. Of course, the embodiments of the present application are not limited to specific names of the ports included in the first class of ports, the second class of ports and the third class of ports, and only refer to BS ports, UE ports and interference ports as examples.

Optionally, in order to simulate interference generated by the communication device to the interference device, in the embodiment of the present application, a channel between a class one port and three classes of ports has a third interference class channel coefficient, and a channel between a class two port and a third port has a fourth interference class channel coefficient. Based on this, the method further comprises: in the channel simulation process, communication signals injected through one type of ports are coupled to three types of ports based on the third interference type channel coefficient, and communication signals injected through two types of ports are coupled to three types of ports based on the fourth interference type channel coefficient.

Optionally, the interference class channel coefficients associated with the three classes of ports are indicative of attenuation or gain, the interference class channel coefficients also being indicative of phase. Optionally, the interference channel coefficients include one or more of decibel (dB) value coefficients, linear value coefficients, complex value coefficients, attenuation plus phase coefficients, gain plus phase coefficients. That is, in the embodiments of the present application, the interference-type channel coefficients may be defined or set to be a simple attenuation/gain plus phase to simulate the simple attenuation/gain plus phase effect of the interference signal on the actual communication channel in the real environment.

In the present embodiment, the three classes of ports include one or more interference ports. Optionally, if the three types of ports include a plurality of interference ports, any two interference ports in the plurality of interference ports are connected inside the channel simulation device, a channel between a first interference port and a second interference port in the any two interference ports has a fifth interference type channel coefficient, and a channel between the second interference port and the first interference port has a sixth interference type channel coefficient. That is, the present solution also emulates communication between interfering devices.

Optionally, any interference port included in the three types of ports is provided with a signal sensitivity threshold, and the signal sensitivity threshold is used for avoiding the air interface signals from participating in coupling. Based on this, the method further comprises: measuring signal strength of one or more input signals of any interference port in a channel simulation process, wherein the one or more input signals comprise signals input to any interference port by a port connected with the interference port; if it is measured that there is an air interface signal in the one or more input signals having a signal strength below the signal sensitivity threshold, signals in the one or more input signals other than the measured air interface signal participate in the coupling. That is, the scheme is based on the characteristic that the air interface signal is generally weaker, and the air interface signal is prevented from being coupled by setting the signal sensitivity threshold value, so that the error of channel simulation is reduced.

Optionally, in the embodiment of the present application, if a channel coefficient of a channel between any one interference port and any other port is a specified coefficient, in a channel simulation process, a signal injected through the any one interference port cannot be coupled to the any other port; if the channel coefficient of the channel between any other port and any interference port is a designated coefficient, the signal injected by any other port cannot be coupled to any interference port in the channel simulation process. That is, the present solution allows defining or setting the channel coefficient of the inter-port channel to a specified coefficient, such as zero or a smaller value, to simulate the inter-port circuit break. In one implementation of simulating a hidden node, a first device and a second device are hidden nodes from each other if the channel coefficient of the channel between any one or more ports connecting the first device to all ports connecting the second device is zero.

In a second aspect, a channel simulation device is provided, where the channel simulation device includes a first class of ports, a second class of ports, and three classes of ports, the first class of ports and the second class of ports are connected inside the channel simulation device, and the three classes of ports connect the first class of ports and the second class of ports inside the channel simulation device;

the channels between the class I ports and the class II ports have first communication channel coefficients, the channels between the class II ports and the class II ports have second communication channel coefficients, the channels between the class III ports and the class II ports have first interference channel coefficients, and the channels between the class III ports and the class II ports have second interference channel coefficients;

the channel simulation device further comprises a memory and a processor;

the memory is used for storing channel coefficients;

the processor is used for processing signal coupling among ports of the channel simulation equipment based on the stored channel coefficients in the channel simulation process.

In a third aspect, a channel simulation system is provided, the system comprising a channel simulation device, a first communication device, a second communication device, and an interfering device;

The channel simulation equipment comprises a first class port, a second class port and three classes of ports, wherein the first class port and the second class port are connected in the channel simulation equipment, and the three classes of ports are connected in the channel simulation equipment;

the first communication equipment is used for connecting the ports, injecting communication signals into the ports in the channel simulation process, and receiving output signals of the ports;

the second communication device is used for connecting the second class ports, injecting communication signals into the second class ports in the channel simulation process, and receiving output signals of the second class ports;

the interference equipment is used for connecting the three types of ports, and interference signals are injected into the three types of ports in the channel simulation process;

The channel simulation device is configured to implement the channel simulation method provided in the first aspect.

Optionally, the first communication device is a test device DUT, and the second communication device is a communication station STA.

In a fourth aspect, a channel simulation apparatus is provided, which has a function of implementing the channel simulation method behavior in the first aspect. The channel simulation device comprises one or more modules, and the one or more modules are used for realizing the channel simulation method provided by the first aspect.

That is, a channel simulation device is provided, the channel simulation device is applied to a channel simulation device, the channel simulation device comprises a first class port, a second class port and three classes of ports, the first class port and the second class port are connected in the channel simulation device, and the three classes of ports are connected in the channel simulation device;

The channel simulation device includes:

the first coupling processing module is used for coupling communication signals injected through one type of ports to two types of ports based on a first communication type channel coefficient and coupling interference signals injected through three types of ports to the two types of ports based on a second interference type channel coefficient in a channel simulation process;

and the second coupling processing module is used for coupling the communication signals injected through the second class of ports to the first class of ports based on the second communication class channel coefficients and coupling the interference signals injected through the three classes of ports to the first class of ports based on the first interference class channel coefficients.

Optionally, the channel between the first class port and the third class port has a third interference class channel coefficient, and the channel between the second class port and the third port has a fourth interference class channel coefficient;

the channel simulation apparatus further includes:

and the third coupling processing module is used for coupling the communication signals injected through the first class of ports to the three classes of ports based on the third interference class channel coefficient and coupling the communication signals injected through the second class of ports to the three classes of ports based on the fourth interference class channel coefficient in the channel simulation process.

Optionally, the interference class channel coefficients associated with the three classes of ports are indicative of attenuation or gain, the interference class channel coefficients also being indicative of phase; the interference channel coefficients include one or more of dB value coefficients, linear value coefficients, complex value coefficients, attenuation plus phase coefficients, gain plus phase coefficients.

Optionally, the three types of ports include a plurality of interference ports, any two interference ports in the plurality of interference ports are connected through the inside of the channel simulation device, a channel between a first interference port and a second interference port in the any two interference ports has a fifth interference type channel coefficient, and a channel between the second interference port and the first interference port has a sixth interference type channel coefficient.

Optionally, any interference port included in the three types of ports is provided with a signal sensitivity threshold, and the signal sensitivity threshold is used for avoiding the air interface signals from participating in coupling;

the channel simulation apparatus further includes:

the measuring module is used for measuring the signal intensity of one or more input signals of any interference port in the channel simulation process, wherein the one or more input signals comprise signals input to any interference port through a port connected with the interference port;

and a fourth coupling processing module, configured to, if it is measured that there is an air interface signal whose signal strength is lower than the signal sensitivity threshold value in the one or more input signals, participate in coupling signals other than the measured air interface signal in the one or more input signals.

Optionally, if the channel coefficient of the channel between any one of the interference ports and any one of the other ports is a specified coefficient, in the channel simulation process, the signal injected through the any one of the interference ports cannot be coupled to the any one of the other ports;

if the channel coefficient of the channel between any other port and any interference port is a designated coefficient, the signal injected by any other port cannot be coupled to any interference port in the channel simulation process.

In a fifth aspect, there is provided a channel simulation apparatus including a processor and a memory for storing a program supporting the channel simulation apparatus to execute the channel simulation method provided in the first aspect described above, and storing data for implementing the channel simulation method provided in the first aspect described above. The processor is configured to execute a program stored in the memory. The operating means of the memory device may further comprise a communication bus for establishing a connection between the processor and the memory.

In a sixth aspect, there is provided a computer readable storage medium having stored therein a computer program which, when run on a computer, causes the computer to perform the channel simulation method of the first aspect described above.

In a seventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the channel simulation method of the first aspect described above.

Technical effects obtained by the second, third, fourth, fifth, sixth and seventh aspects are similar to technical effects obtained by corresponding technical means in the first aspect, and are not described in detail herein.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise the following technical effects:

in the embodiment of the application, the channel simulation device comprises a first class port, a second class port and three classes of ports, and all the ports are connected inside the channel simulation device. And coupling the interference signals injected by the three types of ports to the first type of ports and the second type of ports based on the defined interference type channel coefficients. Therefore, in the scheme, complicated external wiring is not needed, and interference can be added into the simulated channel by defining the interference channel coefficient, so that the implementation is simpler. In addition, the interference signals do not occupy one type of port and two types of ports, and the resource waste of the ports with high cost is avoided.

Drawings

FIG. 1 is a schematic diagram of a channel simulation system shown in an embodiment of the present application;

FIG. 2 is a block diagram of a channel simulation system according to an embodiment of the present application;

FIG. 3 is a block diagram of another channel simulation system provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a channel simulation device according to an embodiment of the present application;

fig. 5 is a flowchart of a channel simulation method provided in an embodiment of the present application;

fig. 6 is a schematic diagram of a signal coupling manner in a channel simulation according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a channel coefficient provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of a signal coupling mode in another channel simulation provided in an embodiment of the present application;

FIG. 9 is a schematic diagram of another channel coefficient provided by an embodiment of the present application;

fig. 10 is a schematic structural diagram of another channel simulation device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a channel simulation device according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The system architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

First, a system architecture related to a channel simulation method provided by an embodiment of the present application is described.

Fig. 2 is a schematic diagram of a channel simulation system according to an embodiment of the present application. Referring to fig. 2, the system includes a channel simulation device (also referred to as a channel simulator), a first communication device (e.g., DUT), a second communication device (e.g., communication STA), and an interfering device. The channel simulation device comprises a first class port, a second class port and three classes of ports, wherein the first class port and the second class port are connected in the channel simulation device, and the three classes of ports are connected in the channel simulation device.

Optionally, the first class port, the second class port and the third class port are connected in the channel simulation device by software, hardware or a combination of software and hardware, where the software includes a software module, the hardware includes an internal wire, a logic circuit, an integrated chip, and the like, and the software and hardware combines the software module, the internal wire, and the logic circuit. That is, the embodiment of the present application does not limit the internal connection manner between ports, and each port on the channel simulation device can be directly connected to other devices.

Optionally, the first class of ports includes one or more BS ports, the second class of ports includes one or more UE ports, and the third class of ports includes one or more interference ports. Of course, the embodiments of the present application are not limited to specific names of one type of port, two types of ports and any port included in three types of ports, and only referred to as BS port, UE port and interference port will be described herein as an example. In other embodiments, any of the ports included in the class one, class two, and class three ports may be referred to by other names. In the embodiments described below, any port included in one type of port is referred to as a BS port, any port included in two types of ports is referred to as a UE port, and any port included in three types of ports is referred to as an interference port.

The channel simulation device shown in fig. 2 comprises an interference port, i.e. three types of ports comprise an interference port, which is connected to an interference device for receiving an interference signal injected by the interference device.

The channel simulation device further includes a plurality of BS ports (4 are shown, but the embodiments of the present application are not limited to 4), that is, a class of ports includes a plurality of BS ports, a class of ports is used for connecting to a first communication device, one first communication device is connected to at least one BS port, and a BS port connected to the first communication device is used for receiving a communication signal injected by the first communication device.

The channel simulation device further includes a plurality of UE ports (4 are shown, but the embodiments of the present application are not limited to 4), that is, the second class of ports includes a plurality of UE ports, the second class of ports is used for connecting to the second communication device, one second communication device is connected to at least one UE port, and the UE port connected to the second communication device is used for receiving the communication signal injected by the second communication device.

The channel simulation device is configured to process a coupling relationship between a communication signal injected through the port and an interference signal, for example, to couple the interference signal to the BS port and the UE port, simulate a wireless channel having interference, that is, simulate a communication channel between the first communication device and the second communication device, and apply interference on the communication channel.

In the embodiment of the application, the simulated channel has a channel coefficient, and the channel coefficient is preset, such as manually based on experience or according to the requirement of a simulation scene, or is generated by channel simulation equipment through a coefficient generation model. In the channel simulation process, a communication type channel coefficient and an interference type channel coefficient are set or defined in the channel simulation device, wherein the communication type channel coefficient comprises channel coefficients of channels from one type of port to two types of port (namely, a first communication type channel coefficient), channel coefficients of channels from two types of port to one type of port (namely, a second communication type channel coefficient), the interference type channel coefficient comprises channel coefficients of channels from three types of port to one type of port (namely, a first interference type channel coefficient), and channel coefficients of channels from three types of port to two types of port (namely, a second interference type channel coefficient). In the channel simulation process, the channel simulation device processes the coupling relation between signals based on the set channel coefficient to simulate the wireless channel.

Optionally, since the communication signals of the first communication device and the second communication device may affect the interference device, based on this, the channel simulation device can also simulate the channel interference of the first communication device and the second communication device to the interference device, and the interference type channel coefficients set or defined by the channel simulation device further include channel coefficients of channels between one type of port and three types of ports (i.e., a third interference type channel coefficient), and channel coefficients of channels between two types of ports and the third port (i.e., a fourth interference type channel coefficient).

Optionally, in the embodiment of the present application, the first communication device accessed by the first type of port may be a DUT, and the second communication device accessed by the second type of port may be a communication STA, and of course, the first type of port and the second type of port may also be accessed by other types of communication devices besides the DUT and the STA, such as a BS, a UE, and the like. The interfering devices accessed by the three types of ports are any type of devices, for example, the interfering devices can also be APs or STAs. That is, the present application does not limit the kinds of the respective port access devices. In the following embodiments, the first communication device is taken as a DUT, and the second communication device is taken as a communication STA.

Fig. 3 is a schematic diagram of another channel simulation system according to an embodiment of the present application. Referring to fig. 3, unlike the channel simulation system shown in fig. 2, the three types of ports of the channel simulation device in fig. 3 include a plurality of interference ports (2 are shown, but the embodiments of the present application are not limited to 2) each allowing access to one interference device, so that the channel simulation device can access one or more interference devices, i.e., the system includes one or more interference devices. If a plurality of interference devices are accessed, each interference device can inject an interference signal into the channel simulation device through the connected interference port, and the channel simulation device is used for simulating a communication channel with a plurality of interferences. Two interference ports as shown in fig. 3 are respectively connected to AP1 and STA1, and both AP1 and STA1 can add interference to the simulated channel.

Optionally, the connection between each BS port and each UE port on the channel simulation device shown in fig. 2 and fig. 3 is performed inside the channel simulation device, the connection between each UE port and each BS port is also performed inside the channel simulation device, the connection between each interference port and each BS port is also performed inside the channel simulation device, and the connection between each interference port and each UE port is also performed inside the channel simulation device. In fig. 3 provided in the embodiment of the present application, although only the connection between the interference port 1 and one BS port and one UE port and the connection between the interference port 2 and one BS port and one UE port are shown, it does not represent that the interference port 1 and the interference port 2 are not connected to other ports, that is, all internal connection relations in the channel simulation apparatus are not shown in fig. 3.

Optionally, any two interference ports of the plurality of interference ports are connected inside the channel simulation device, and the channel simulation device further sets or defines channel coefficients of channels between the interference ports so as to simulate communication between the interference devices. That is, the channel between any two interference ports has an interference-like channel coefficient, for example, the channel between interference port 1 to interference port 2 has a fifth interference-like channel coefficient, and the channel between interference port 2 to interference port 1 has a sixth interference-like channel coefficient. As shown in fig. 3, the interference port 1 and the interference port 2 are connected inside the channel simulation device, and communication is possible between the AP1 to which the interference port 1 is connected and the STA1 to which the interference port 2 is connected.

Alternatively, in the channel simulation systems shown in fig. 2 and 3, the DUT, the communication STA, and the interfering device may each include a shielded enclosure for reducing wireless signal leakage so that the simulated channel more closely approximates a real scene.

As can be seen from the two channel simulation devices shown in fig. 2 and fig. 3, when the channel simulation device provided in the embodiment of the present application simulates a communication channel with interference, the interference device is connected through a dedicated interference port, so that the interference can be flexibly injected, no complicated and troublesome external wiring is required to connect the interference device, and the interference device does not need to occupy a BS port and a UE port with high cost.

Fig. 4 is a schematic structural diagram of a channel simulation device according to an embodiment of the present application. The channel simulation device may be the channel simulation device shown in fig. 2 or 3 described above. Referring to fig. 4, the channel simulation device comprises at least one processor 401, a communication bus 402, a memory 403 and at least one communication interface 404.

The processor 401 may be a general purpose central processing unit (central processing unit, CPU), application Specific Integrated Circuit (ASIC) or one or more integrated circuits for controlling the execution of the programs of the present application.

Communication bus 402 may include a path to transfer information between the aforementioned components.

The Memory 403 may be, but is not limited to, a read-only Memory (ROM) or other type of static storage device that can store static information and instructions, a random access Memory (random access Memory, RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only Memory (electrically erasable programmable read-only Memory, EEPROM), a compact disc (compact disc read-only Memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, digital versatile disc, blu-ray disc, etc.), magnetic disk or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 403 may be self-contained and be coupled to the processor 401 via the communication bus 402. Memory 403 may also be integrated with processor 401.

The memory 403 is used for storing program codes for executing the embodiments of the present application, and is controlled by the processor 401 to execute the embodiments. The processor 401 is used to execute program code stored in the memory 403. One or more software modules may be included in the program code. The channel simulation device may determine data for channel simulation by one or more software modules in program code in processor 401 and memory 403. The memory 403 is further configured to store data involved in implementing the channel simulation method in the embodiments of the present application, for example, to store channel coefficients, and the processor 401 is further configured to execute program code to implement the present solution based on the information coefficients.

By way of example, assuming that the first coupling processing module and the second coupling processing module shown in fig. 11 in the following embodiments are implemented by software modules, channel coefficients and program codes are stored in the memory 403, and the program codes include the first coupling processing module and the second coupling processing module, the processor 401 is configured to execute the first coupling processing module and the second coupling processing module in a channel simulation process, so as to implement signal coupling between ports of the channel simulation device based on the stored channel coefficients. The detailed description of the embodiment of fig. 5 will be omitted herein.

The communication interface 404 uses any transceiver-like device for communicating with other devices or communication networks, such as ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), etc. In the embodiment of the present application, the communication interface 404 includes a first type of port, which is used to connect to a first communication device (e.g., DUT), a second type of port, which is used to connect to a second communication device (e.g., communication STA), and three types of ports, which are used to connect to an interfering device.

In some embodiments, the channel simulation device may include multiple processors, such as processor 401 and processor 405 shown in fig. 4. Each of these processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In other embodiments, the channel simulation device may also include an output device 406 and an input device 407. The output device 406 communicates with the processor 401 and may display information in a variety of ways. For example, the output device 406 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a Cathode Ray Tube (CRT) display device, or a projector (projector), or the like. The input device 407 is in communication with the processor 401 and may receive user input in a variety of ways. For example, the input device 407 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.

The following describes a channel simulation method provided in the embodiments of the present application.

Fig. 5 is a flowchart of a channel simulation method provided in an embodiment of the present application. The method is applied to a channel simulation device, see fig. 5, and comprises the following steps:

501: in the channel simulation process, communication signals injected through one type of ports are coupled to two types of ports based on first communication type channel coefficients of channels between the one type of ports (BS ports) and the two types of ports (UE ports), and interference signals injected through three types of ports are coupled to the two types of ports based on second interference type channel coefficients of channels between the three types of ports (interference ports) and the two types of ports.

In the embodiment of the application, three types of ports are added to the channel simulation device, namely, an interference port is added, and the interference port can couple interference signals to two sides of the channel simulation device at the same time, namely, a BS port (namely, a type one port) and a UE port (namely, a type two port).

The channel simulation device can set or define communication type channel coefficients and interference type channel coefficients, wherein the communication type channel coefficients comprise channel coefficients of channels from one type of port to two types of port (namely, first communication type channel coefficients) and channel coefficients of channels from two types of port to one type of port (namely, second communication type channel coefficients), and the interference type channel coefficients comprise channel coefficients of channels from three types of port to one type of port (namely, first interference type channel coefficients) and channel coefficients of channels from three types of port to two types of port (namely, second interference type channel coefficients). That is, the channels between the class one port and the class two port have a first communication class channel coefficient, the channels between the class two port and the class one port have a second communication class channel coefficient, the channels between the class three port and the class one port have a first interference class channel coefficient, and the channels between the class three port and the class two port have a second interference class channel coefficient.

In the embodiment of the application, the interference signal can be coupled to the first-class port and the second-class port to generate interference on the communication between the devices connected by the first-class port and the second-class port. Based on this, in the channel simulation process, one implementation of the signal coupling process between ports in the process that the first communication device (such as DUT) sends a signal to the second communication device (such as communication STA) is: the channel simulation device couples communication signals injected through one type of ports to the two type of ports based on the first communication type channel coefficients, and couples interference signals injected through three types of ports to the two type of ports based on the second interference type channel coefficients.

The channel coefficient is defined, which is essentially defined as a radio channel between ports, the radio channel defined between the BS port and the UE port is a communication channel, and the radio channel defined between the interfering port and the BS port and between the interfering port and the UE port is an interfering channel. In the embodiment of the present application, no wireless channel is defined between each BS port, and no wireless channel is defined between each UE port.

Optionally, signals of the first class port and the second class port can also be coupled to the three classes of ports, which affects the interfering devices connected to the three classes of ports. That is, the channel simulation device further sets or defines channel coefficients of channels between the class one port and the class three ports (i.e., third interference class channel coefficients), and channel coefficients of channels between the class two port and the class three ports (i.e., fourth interference class channel coefficients). That is, the channels between the class one port and the class three ports have a third interference class channel coefficient, and the channels between the class two ports and the class three ports have a fourth interference class channel coefficient. Based on this, in the channel simulation process, the communication signals injected through the first class of ports are coupled to the three classes of ports based on the third interference class channel coefficients, and the communication signals injected through the second class of ports are coupled to the three classes of ports based on the fourth interference class channel coefficients.

Fig. 6 is a schematic diagram of a signal coupling manner in channel simulation according to an embodiment of the present application. In fig. 6, a BS port (X ₁ ) One UE port (Y ₁ ) And an interference port (Z ₁ ) Signal coupling between them is exemplified by the formula

Signals representing the interfering ports (including interfering signals) are coupled to the UE ports, expressed as +.>

A signal representing an interference port is coupled to the BS port, wherein Coef ₁ Channel coefficient representing channel between BS port to UE port, coef ₂ Representing the channel coefficient, coef, of the channel between the UE port and the BS port ₃ Channel coefficient, coef, representing the channel between interfering ports to UE ports ₄ Representing the channel coefficients of the channel between the interfering port to the BS port. Alternatively, the signals of the BS port and the UE port can also be coupled to the interference port, using formula Z _{1 out} ＝Coef ₅ *X _{1 go into} +Coef ₆ *X _{1 go into} Representation, wherein Coef ₅ Channel coefficient, coef, representing the channel between BS port to interference port ₆ Representing the channel coefficients of the channel from the UE port to the interfering port.

From the foregoing, it can be seen that three types of ports of the channel simulation device provided in the embodiments of the present application include one or more interference ports. If the three types of ports include a plurality of interference ports, any two interference ports in the plurality of interference ports are connected inside the channel simulation device, and the interference channel coefficients further include channel coefficients of channels between any two interference ports, for example, a channel between a first interference port and a second interference port in any two interference ports has a fifth interference channel coefficient, and a channel between the second interference port and the first interference port has a sixth interference channel coefficient.

The signal coupling relation in the embodiment of the present application is described below by taking an example that the channel simulation device includes a class of ports including M BS ports, a class of ports including N UE ports, and a class of ports including K interference ports. Wherein one type of port is denoted by reference numeral X _m Denoted m=1, …, M, ports of the second class are denoted by reference numeral Y _n N=1, …, N, three types of ports are denoted by reference numeral Z _k Denoted k=1, …, K. The output signals of the ports are represented by formulas (1), (2) and (3), respectively:

where cofe_nm represents a channel coefficient of a channel between an mth BS port and an nth UE port, and cofe_mn represents a channel coefficient of a channel between an nth UE port and an mth BS port. coef_nk represents the channel coefficient of the channel between the kth interfering port and the nth UE port, coef_kn represents the channel coefficient of the channel between the nth UE port and the kth interfering port. coef_mk represents the channel coefficients of the channel between the kth interfering port and the mth BS port, and coef_km represents the channel coefficients of the channel between the mth BS port and the kth interfering port. coef_kk 'represents the channel coefficient of the channel between the kth' interfering port to the kth interfering port. The channel associated with the interference port is an interference channel, the channel coefficient of the interference channel is an interference channel coefficient, and the channel coefficients of other channels are communication channel coefficients.

As can be seen from the above formula, the output signals of the first class of ports are determined by the input signals of the second class of ports and the third class of ports, the output signals of the second class of ports are determined by the input signals of the first class of ports and the third class of ports, and the output signals of the third class of ports are determined by the first class of ports, the second class of ports and the other three classes of ports.

In the embodiment of the present application, the form of each channel coefficient cofe in the above formulas (1) to (3) is plural, and two forms of channel coefficients, i.e., a complex form (convolution form) and a simple form, are described herein.

1. Channel coefficients of complex form (complex coefficients)

As shown in fig. 7, the channel coefficient cofe of the channel from one port to another is composed of one or more taps, denoted cofe1, cofe2, … …, respectively. Each tap corresponds to a delay and a tap coefficient (e.g., complex coefficient). Assuming that there are J taps corresponding to delay 1, delay 2, … …, delay J, and coefficient 1 (cofe 1), coefficient 2 (cofe 2), … …, coefficient J (cofeJ), respectively, the signal before convolution is Sin (t), that is, the input signal of one port is Sin (t), after convolution processing based on the channel coefficient cofe, the output signal coupled to the other port is Sout (t), that is, the signal after convolution is Sout (t), where t represents time, then the convolution can be represented by formula (4):

Sout(t)＝coef1*Sin(t-delay1)+coef2*Sin(t-delay2)+……+cofeJ*Sin(t-delayJ) (4)

In the signal coupling process shown in fig. 7, the input signal Sin of one port is multiplied by the j-th tap coefficient after passing through the delay j corresponding to the j-th tap, and then superimposed on the output signal Sout of the other port. Note that, sin and Sout shown in fig. 7 may be signals injected by a first class port and a second class port, or signals injected by a first class port and a third class port, or signals injected by a second class port and a third class port, or signals injected by a third class port and a first class port, or signals injected by a third class port and a second class port, or signals injected by two and three class ports, respectively.

The input signal of one port is coupled to another port as shown in fig. 7. In practice, the input signal of more than one port will be coupled to the same port, as in the channel simulation device shown in fig. 2 and 3, one UE port is interconnected with a plurality of BS ports, which are all capable of coupling signals injected by the plurality of BS ports to the UE port. As shown in fig. 8, the input signals 1 to n of the plurality of ports are commonly coupled to the output signal 1 of another port, wherein the coupling process of each input signal is similar to that shown in fig. 7, and each input signal is coupled through a corresponding plurality of taps and then superimposed to the output signal 1.

2. Channel coefficient of simple form (simple coefficient)

In one implementation, the channel coefficients in a simple form need only be multiplied or convolved with the signal without complex delays, such as

Input signal X _{1 go into} And channel coefficient cofe ₁ Performing convolution operation to input signal Z _{1 go into} And channel coefficient coef ₃ Simply multiply.

In the present embodiment, the channel coefficients in a simple form indicate attenuation or gain, but also phase. The channel coefficients in simple form include one or more of decibel (dB) value coefficients, linear value coefficients, complex value coefficients, attenuation plus phase coefficients, gain plus phase coefficients.

As shown in fig. 9, in mode 1 of processing a signal coupling relation based on a simple form of channel coefficient, an input signal of one port is attenuated or gained and then phase-processed, and then coupled to an output signal of the other port. In mode 2, the input signal of one port is multiplied by a complex coefficient and then coupled to the output signal of the other port, i.e. the attenuation/gain and phase are directly replaced by a complex coefficient (also called complex coefficient), the modulus of the complex coefficient indicates attenuation or gain, the modulus is less than 1 indicates attenuation, the modulus is greater than 1 indicates gain, the modulus is 0 indicates that the input signal is not coupled to the output, and the phase of the complex is indicative of phase.

The channel coefficients of two types, i.e., the complex form and the simple form, given in the embodiments of the present application are described above, but the communication channel coefficient and the interference channel coefficient set or defined in the channel simulation device in the embodiments of the present application may be any type of channel coefficient, and the complex coefficient and the simple coefficient may also be used in a mixed manner, for example, the communication channel coefficient includes a complex coefficient and a simple coefficient, and the interference channel coefficient includes a simple coefficient and a complex coefficient, that is, in the embodiments of the present application, the channel coefficient allowed to be customized from any port to another port is a simple coefficient or a complex coefficient.

Optionally, since the communication channel between the DUT and the communication STA is often complex, such as a multipath channel, and the channel simulation device needs to accurately simulate the multipath channel, in the embodiment of the present application, the channel coefficient of the channel between the BS port and the UE port is defined as a complex coefficient, so as to better simulate a real multipath environment, that is, the communication channel coefficient is a channel coefficient in a complex form. Optionally, since the interference in the real environment is generally simply attenuation/gain and phase of the signal, in the embodiment of the present application, the interference channel coefficient is defined as a channel coefficient in a simple form, that is, the interference channel coefficient associated with the three types of ports indicates attenuation or gain, the interference channel coefficient also indicates phase, and the interference channel coefficient includes one or more of a dB value coefficient, a linear value coefficient, a complex value coefficient, an attenuation plus phase coefficient, and a gain plus phase coefficient. Because the complex coefficient is to be realized by a plurality of taps including time delay, the interference in the real wireless channel can be simulated by using the simple coefficient in the embodiment of the application, and the complex coefficient is not used, so that the coefficient realization cost can be reduced.

In the embodiment of the present application, if the channel coefficient of the channel between any one interference port and any other port is defined as the specified coefficient, in the channel simulation process, the signal injected through any interference port cannot be coupled to any other port. If the interference channel coefficient of the channel between any other port and any interference port is defined as the designated coefficient, the signal injected by any other port cannot be coupled to any interference port in the channel simulation process. In one implementation, the designated coefficient is zero, or some other small value, such that the strength of the signal processed based on the designated coefficient is weak and filtered out by the port (e.g., the port sets a signal sensitivity threshold, signals less than the signal sensitivity threshold are zeroed out and do not participate in coupling). Based on this, hidden nodes, such as wireless fidelity (wireless fidelity, wi-Fi) hidden nodes, may be simulated by defining certain channel coefficients as specified coefficients. In one implementation of the analog hidden node, the channel coefficient defining the channel between all ports connected to one device and the other port is zero, or the channel coefficient between the other port and the channel between all ports connected to the device is zero, so that the device is a hidden node, and the device connected to the other port is also a hidden node for the device, that is, the two devices are hidden nodes. Illustratively, as shown in fig. 3, assuming that the channel coefficients defining the channels between the interference port 2 to all BS ports are zero, indicating that the interference port 2 and all BS ports are not interworking, the DUT and the interfering STA are not visible to each other.

Optionally, because signals sent by other devices connected to the channel simulation device may be coupled to the port of the channel simulation device through the air interface, that is, form that the air interface signal is coupled to the port, and cause simulation errors, in order to avoid coupling of the air interface signal, in the embodiment of the present application, based on the characteristic that the air interface signal is weaker than the communication signal and the interference signal, a signal sensitivity threshold is set in the channel simulation device, and signals with signal strength of the input port lower than the channel sensitivity threshold do not participate in coupling, for example, the detected air interface signal is set to zero.

In the embodiment of the application, any interference port included in the three types of ports is provided with a signal sensitivity threshold, and the signal sensitivity threshold is used for avoiding the air interface signals from participating in coupling. Based on this, in the channel simulation process, the signal strength of one or more input signals of any one of the interference ports is measured, the one or more input signals include signals input to any one of the interference ports by a port connected to any one of the interference ports, and if an air interface signal whose signal strength is lower than a signal sensitivity threshold exists in the one or more input signals, signals other than the measured air interface signal participate in coupling, that is, the one or more input signals are measured to include an air interface signal, and the air interface signal does not participate in coupling.

Illustratively, as shown in fig. 3, the channel simulation device transmits the interference signal of STA1 to the interference port 1 through the air interface, and transmits the interference signal to the DUT through the interference port 1, so that the simulation error is caused, so that the input signal of the interference port 1 is measured, and when the signal strength of one input signal is detected to be less than the signal sensitivity threshold, it is indicated that the input signal is most likely an air interface signal, and the input signal is set to zero and does not participate in coupling.

502: communication signals injected through the second class of ports are coupled to the first class of ports based on second communication class channel coefficients of channels between the second class of ports and the first class of ports, and interference signals injected through the third class of ports are coupled to the first class of ports based on first interference class channel coefficients of channels between the third class of ports and the first class of ports.

In step 501, a method for processing a signal coupling relationship between ports in a process of transmitting a signal from a first communication device (e.g., DUT) to a second communication device (e.g., STA) is described, and similarly, a method for processing a signal coupling relationship between ports in a process of transmitting a signal from a second communication device to a first communication device is also similar, which is not described herein.

In this embodiment of the present application, as shown in fig. 10, the channel simulation device further includes a processor and a memory, where the processor includes an implementation module, and the memory includes a storage module. The processor processes the signal coupling relation between the ports through the implementation module according to the channel simulation method, and the memory stores the channel coefficients through the storage module.

In summary, in the embodiment of the present application, the channel simulation device includes a first class of ports, a second class of ports, and three classes of ports, where each port is connected inside the channel simulation device. And coupling the interference signals injected by the three types of ports to the first type of ports and the second type of ports based on the defined interference type channel coefficients. Therefore, in the scheme, complicated external wiring is not needed, and interference can be added into the simulated channel by defining the interference channel coefficient, so that the implementation is simpler. In addition, the interference signals do not occupy one type of port and two types of ports, and the resource waste of the ports with high cost is avoided.

Fig. 11 is a schematic structural diagram of a channel simulation apparatus 1100 provided in an embodiment of the present application, where the channel simulation apparatus 1100 may be implemented by software, hardware, or a combination of both as part or all of a channel simulation device, and the channel simulation device may be the channel simulation device shown in fig. 2, 3, or 10. Optionally, the channel simulation device is any one of the foregoing embodiments.

In the embodiment of the present application, the apparatus 1100 is applied to a channel simulation device, and the channel simulation apparatus is applied to a channel simulation device, where the channel simulation device includes a first class of ports, a second class of ports, and three classes of ports, the first class of ports and the second class of ports are connected inside the channel simulation device, and the three classes of ports connect the first class of ports and the second class of ports inside the channel simulation device. The channels between the class I ports and the class II ports have first communication class channel coefficients, the channels between the class II ports and the class II ports have second communication class channel coefficients, the channels between the class III ports and the class II ports have first interference class channel coefficients, and the channels between the class III ports and the class II ports have second interference class channel coefficients.

Referring to fig. 11, the apparatus 1100 includes: a first coupling processing module 1101 and a second coupling processing module 1102.

The first coupling processing module 1101 is configured to couple, in a channel simulation process, a communication signal injected through one type of port to the two type of ports based on a first communication type channel coefficient, and couple an interference signal injected through three types of ports to the two type of ports based on a second interference type channel coefficient; the detailed description of the step 501 in the embodiment of fig. 5 is referred to above, and will not be repeated here.

The second coupling processing module 1102 is configured to couple the communication signals injected through the second class of ports to the first class of ports based on the second communication class channel coefficient, and couple the interference signals injected through the third class of ports to the first class of ports based on the first interference class channel coefficient. The detailed description of the step 502 in the embodiment of fig. 5 is referred to above, and will not be repeated here.

the channel simulation apparatus 1100 further includes:

and the third coupling processing module is used for coupling the communication signals injected through the first class of ports to the three classes of ports based on the third interference class channel coefficient and coupling the communication signals injected through the second class of ports to the three classes of ports based on the fourth interference class channel coefficient in the channel simulation process. The detailed description of the step 501 in the embodiment of fig. 5 is referred to above, and will not be repeated here.

Optionally, the interference class channel coefficients associated with the three classes of ports are indicative of attenuation or gain, the interference class channel coefficients also being indicative of phase; the interference channel coefficients include one or more of decibel dB value coefficients, linear value coefficients, complex value coefficients, attenuation plus phase coefficients, gain plus phase coefficients. The detailed description of the step 501 in the embodiment of fig. 5 is referred to above, and will not be repeated here.

Optionally, the three types of ports include a plurality of interference ports, any two interference ports in the plurality of interference ports are connected inside the channel simulation device, a channel between a first interference port in the any two interference ports and a second interference port has a fifth interference type channel coefficient, and a channel between the second interference port and the first interference port has a sixth interference type channel coefficient.

the channel simulation apparatus 1100 further includes:

And a fourth coupling processing module, configured to, if it is measured that there is an air interface signal whose signal strength is lower than the signal sensitivity threshold value in the one or more input signals, participate in coupling signals other than the measured air interface signal in the one or more input signals. The detailed description of the step 501 in the embodiment of fig. 5 is referred to above, and will not be repeated here.

if the channel coefficient of the channel between any other port and any interference port is a designated coefficient, the signal injected by any other port cannot be coupled to any interference port in the channel simulation process. The detailed description of the step 501 in the embodiment of fig. 5 is referred to above, and will not be repeated here.

It should be noted that: in the channel simulation device provided in the above embodiment, only the division of the above functional modules is used for illustration, and in practical application, the above functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the channel simulation device and the channel simulation method provided in the foregoing embodiments belong to the same concept, and detailed implementation processes of the channel simulation device and the channel simulation method are detailed in the method embodiments, which are not repeated herein.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, data subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (digital versatile disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), etc.

It should be understood that references herein to "at least one" mean one or more, and "a plurality" means two or more. In the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

The embodiments described above are not intended to limit the embodiments of the present application, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application are intended to be included in the scope of the embodiments of the present application.

Claims

1. The channel simulation method is characterized by being applied to channel simulation equipment, wherein the channel simulation equipment comprises a first class port, a second class port and three classes of ports, the first class port and the second class port are connected inside the channel simulation equipment, and the three classes of ports are connected inside the channel simulation equipment;

channels between the class two ports and the class two ports have a first communication class channel coefficient, channels between the class two ports and the class two ports have a second communication class channel coefficient, channels between the class three ports and the class two ports have a first interference class channel coefficient, channels between the class three ports and the class two ports have a second interference class channel coefficient, the interference class channel coefficients associated with the class three ports indicate attenuation or gain, and the interference class channel coefficients also indicate phase; the interference channel coefficient comprises one or more of a dB value coefficient, a linear value coefficient, a complex value coefficient, an attenuation phase-adding coefficient and a gain phase-adding coefficient;

the method comprises the following steps:

in the channel simulation process, coupling the communication signals injected through the first class of ports to the second class of ports based on the first communication class channel coefficient, and coupling the interference signals injected through the three classes of ports to the second class of ports based on the second interference class channel coefficient, wherein coupling the interference signals injected through the three classes of ports to the second class of ports based on the second interference class channel coefficient comprises: multiplying or convolving the second interference channel coefficient with the interference signals injected through the three types of ports, and coupling the processed interference signals to the two types of ports;

Coupling communication signals injected through the second class of ports to the first class of ports based on the second communication class channel coefficients, coupling interference signals injected through the third class of ports to the first class of ports based on the first interference class channel coefficients, wherein coupling interference signals injected through the third class of ports to the first class of ports based on the first interference class channel coefficients comprises: multiplying or convolving the first interference channel coefficient with the interference signals injected through the three types of ports, and coupling the processed interference signals to the type of ports.

2. The method of claim 1, wherein the channels between the class one port and the three classes of ports have a third interference class channel coefficient, and the channels between the class two port and the three classes of ports have a fourth interference class channel coefficient;

the method further comprises the steps of:

in the channel simulation process, communication signals injected through the first class of ports are coupled to the three classes of ports based on the third interference class channel coefficients, and communication signals injected through the second class of ports are coupled to the three classes of ports based on the fourth interference class channel coefficients.

3. The method of claim 1 or 2, wherein the three classes of ports comprise a plurality of interfering ports, a connection is made inside the channel emulation device between any two interfering ports of the plurality of interfering ports, a channel between a first interfering port of the any two interfering ports to a second interfering port has a fifth interfering class channel coefficient, and a channel between the second interfering port to the first interfering port has a sixth interfering class channel coefficient.

4. The method of claim 1 or 2, wherein any of the three classes of ports comprises an interference port provided with a signal sensitivity threshold for avoiding air interface signals from participating in coupling;

the method further comprises the steps of:

measuring signal strength of one or more input signals of any interference port in the channel simulation process, wherein the one or more input signals comprise signals input to any interference port by a port connected with the interference port;

if it is measured that there is an air interface signal in the one or more input signals having a signal strength below the signal sensitivity threshold, signals in the one or more input signals other than the measured air interface signal participate in the coupling.

5. The method according to claim 1 or 2, wherein if a channel coefficient of a channel between any one of the three types of ports and any other port is a specified coefficient, a signal injected through the any one of the three types of ports cannot be coupled to the any other port in the channel simulation process;

if the channel coefficient of the channel from the any other port to the any interference port is the designated coefficient, the signal injected by the any other port cannot be coupled to the any interference port in the channel simulation process.

6. The channel simulation device is characterized by comprising a first class port, a second class port and three classes of ports, wherein the first class port and the second class port are connected inside the channel simulation device, and the three classes of ports are connected inside the channel simulation device;

The channel simulation device further comprises a memory and a processor;

the memory is used for storing channel coefficients;

the processor is configured to:

7. A channel simulation system, the system comprising a channel simulation device, a first communication device, a second communication device, and an interfering device;

the channel simulation device is configured to implement the method of any of claims 1-5.

8. A channel simulation apparatus, the apparatus comprising a memory and a processor;

the memory is used for storing a program for supporting the device to execute the method of any one of claims 1-5 and storing data related to the implementation of the method of any one of claims 1-5;

the processor is configured to execute a program stored in the memory.

9. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which is executed by a computer to implement the method of any of claims 1-5.