WO2020042918A1 - Communication feed point determination method and communication device - Google Patents

Abstract

Embodiments of the present invention disclose a communication feed point determination method and a communication device. The method is applied to a communication device in a MIMO system. The communication device comprises a receiving antenna comprising M antennas having adjustable feed points, wherein the number of feed points comprised in each of the antennas having adjustable feed points among the M antennas having adjustable feed points is greater than one, and M is an integer greater than 0. The method comprises: upon accessing an AP, determining a communication indicator during operation of each feed point combination in a feed point combination set of the M antennas having adjustable feed points, the communication indicator being an indicator used to indicate a level of communication quality; and choosing, on the basis of the communication indicators, a feed point combination from the feed point combination set to be used for communication with the AP, thereby changing the Kronecker product of a communication channel matrix so as to optimize the quality of a communication channel.

Description

Method for determining communication feed point and communication equipment

This application claims priority from a Chinese patent application filed with the State Intellectual Property Office of China on August 31, 2018, with application number 201811013287.6, and the invention name is "A Method for Determining Communication Feedpoints and Communication Equipment", the entire contents of which are incorporated by reference Incorporated in this application.

Technical field

Embodiments of the present invention relate to the field of communication technologies, and in particular, to a method for determining a communication feed point and a communication device.

Background technique

Wireless communication has become an essential part of communication technology, however, wireless channels in wireless communication are susceptible to interference from noise, the environment, and other factors. In addition, due to the movement of the communication device and the dynamic change of the channel, the factors that cause interference with the wireless channel change over time. In order to solve the above problems and improve channel capacity, the industry has introduced Multiple-Input Multiple-Output (MIMO) in wireless communications. However, in a MIMO system, after the two communication parties are determined, the antenna used for communication will be determined. Because the communication quality of different antennas is different, the quality of the communication channel when the communication device communicates with some APs is poor.

Summary of the Invention

The embodiment of the invention discloses a method for determining a communication feed point and a communication device, which are used to improve the quality of a communication channel.

The first aspect discloses a method for determining a communication feed point. The method is applied to a communication device in a MIMO system. The communication device includes a receiving antenna, and the receiving antenna may include M feed point tunable antennas. Each feed point tunable antenna includes more than one feed point. When accessing a wireless access point (AP), determine the feed point combination of M feed point tunable antennas when each feed point combination works. Communication index, according to the communication index, select the feed point combination from the feed point combination set to communicate with the AP. Among them, M is an integer greater than 0, and the communication index is an index used to indicate the level of communication quality. It can be seen that when accessing different APs, a combination of feed points with higher communication quality can be selected to communicate with the AP according to communication indicators, thereby improving the quality of the communication channel.

In a possible design, the communication index may include at least one of a signal-to-noise ratio (Signal and Noise Ratio), a received signal strength indicator (Received Signal Strength Indicator, RSSI), and a packet error rate (Packet Error Error Rate, PER) .

In a possible design, the first combination set whose RSSI is greater than the first threshold may be selected from the combination of feed points first, and then the combination of the feed point with the smallest PER in the first combination set is determined as the combination of feed points to communicate with the AP. Ensure that the received signal strength is large and the packet error rate is small during communication.

In a possible design, the first combination set whose RSSI is greater than the first threshold may be selected from the feed point combination set first, then the second combination set whose PER is less than the second threshold is selected from the first combination set, and finally the second combination set is concentrated The feed point combination with the largest SNR is determined as the feed point combination for communication with the AP, which can ensure that the received signal strength is large, the packet error rate is small, and the SNR is large during communication.

In a possible design, each of the M tunable antennas includes a general input and output (GPIO), and the GPIO can control different feed points in the tunable antenna to work. To determine the communication index of each feed point combination when the feed point combination of the M tunable antennas is concentrated, different feed points can be selected for communication through GPIO in order to select a feed point combination with better communication channel quality.

In a possible design, the received signal of the communication device is R = HS, H is the channel matrix, S is the transmission signal of the AP, R is the N × 1 matrix, H is the K × N matrix, and S is the K × L Matrix, N is the number of antennas included in the receiving antenna of the communication device, K is the number of antennas included in the transmitting antenna of the AP, and the difference between L and 1 is equal to the number of M points with adjustable feed points and M Difference. It can be seen that when the receiving antenna includes M feed point tunable antennas, and the M feed point tunable antennas include E feed points, the EM column data is added to the AP ’s transmission signal, indicating that Krone The product of grams has changed.

In a second aspect, an embodiment of the present invention discloses a communication device, the communication device includes a unit for performing the first aspect or any possible design disclosure method of the first aspect of the communication feed point determination method.

In a third aspect, an embodiment of the present invention discloses a communication device. The communication device is a communication device in a MIMO system, and includes a processor, a memory, a receiving antenna, and a bus. The processor, the memory, and the receiving antenna are connected by a line. The receiving antenna includes M feed point tunable antennas, each feed point tunable antenna in the M feed point tunable antennas includes a number of feed points greater than 1, M is an integer greater than 0, the receiving antenna is used to receive signals, and the memory is used to store program code The processor is configured to execute the program code stored in the memory, and when the processor executes the program code stored in the memory, the processor is caused to execute the first aspect or any possible design disclosed in the first aspect of the communication feedpoint determination method.

In a fourth aspect, an embodiment of the present invention discloses a storage medium having a program stored thereon. When the program runs, a method for determining a communication feedpoint as disclosed in the first aspect or any possible design disclosure of the first aspect is implemented. .

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an application scenario disclosed by an embodiment of the present invention; FIG.

2 is a schematic diagram of a network architecture disclosed by an embodiment of the present invention;

3 is a schematic flowchart of a method for determining a communication feed point according to an embodiment of the present invention;

4 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

5 is a schematic structural diagram of another communication device according to an embodiment of the present invention;

6 is a schematic diagram of a 2 × 2 MIMO system disclosed by an embodiment of the present invention;

7 is a schematic flowchart of a test method disclosed in an embodiment of the present invention;

8 is a schematic diagram of a communication device and an AP in a home environment disclosed by an embodiment of the present invention;

FIG. 9 is a schematic diagram of co-channel interference disclosed in an embodiment of the present invention.

detailed description

The embodiment of the invention discloses a method for determining a communication feed point and a communication device, which are used to improve the quality of a communication channel. Each of them will be described in detail below.

det(A)＝h ₁₁h ₂₂-h ₁₂h ₂₁。从图1来看，当天线处于特征的角度时，h ₁₁≈h ₂₂，h ₁₂≈h ₂₁，此时det(A)≈∞，噪声趋于∞，导致x无法被正确解调。因此，可以在接收端的接收天线中的一个或多个天线设置为馈点可调天线，当有一个馈点的噪声趋于∞，其它馈点的噪声不会趋于∞，以便能够正确解调x。 In order to better understand a method for determining a communication feed point and a communication device disclosed in the embodiments of the present invention, an application scenario used in the embodiments of the present invention is described below first. Please refer to FIG. 1, which is a schematic diagram of an application scenario disclosed by an embodiment of the present invention. Figure 1 shows 2 × 2 MIMO, that is, the AP and the terminal device are provided with two antennas. The signal y = Hx + N received by the terminal device, N is noise, x is the signal sent by the AP, and H is the channel matrix. After the terminal device receives the signal y, in order to determine the signal sent by the AP, both sides of the above formula are multiplied by the inverse matrix of H to obtain r = H ^-1 y = x + H ^-1 N. among them,

det (A) = h ₁₁ h ₂₂ -h ₁₂ h ₂₁ . From Figure 1, when the antenna is at the characteristic angle, h ₁₁ ≈ h ₂₂ , h ₁₂ ≈ h ₂₁ , at this time det (A) ≈ ∞, the noise tends to ∞, resulting in x cannot be demodulated correctly. Therefore, one or more of the receiving antennas at the receiving end can be set as adjustable feed point antennas. When the noise of one feed point tends to ∞, the noise of other feed points will not tend to ∞, so that it can be demodulated correctly. x.

In order to better understand a method for determining a communication feed point and a communication device disclosed in the embodiments of the present invention, the network architecture used in the embodiments of the present invention is described below first. Please refer to FIG. 1, which is a schematic diagram of a network architecture disclosed by an embodiment of the present invention. As shown in FIG. 1, the network architecture may include a terminal device 1 and an AP2. The terminal device 1 and the AP 2 are connected through a wireless network, and communicate through the wireless network. Both the terminal device 1 and the AP2 include multiple transmitting antennas and multiple receiving antennas. The receiving antenna of the terminal device 1 includes an adjustable feed point antenna. Each adjustable feed point antenna is provided with a GPIO, and the GPTO can control different feed points for communication.

In order to better understand a method and a communication device for determining a communication feed point disclosed in the embodiments of the present invention, the terms used in the embodiments of the present invention are described below first. In MIMO, the transmitting and receiving ends are equipped with multiple antennas. Feed point tunable antenna: Compared with the traditional sense antenna, the feed point tunable antenna adds one or more RF signals to the original antenna design. Kroneck Product: If A is an m × n matrix and B is a p × q matrix, the Kroneck product of A and B is:

Based on the network architecture shown in FIG. 2, please refer to FIG. 3. FIG. 3 is a schematic flowchart of a method for determining a communication feed point according to an embodiment of the present invention. The method for determining a communication feed point is applied to a communication device in a MIMO system. The communication device includes a receiving antenna, and the receiving antenna may include M feed point adjustable antennas, and each of the M feed point adjustable antennas is adjustable. The number of feed points included in the antenna is greater than 1, and M is an integer greater than 0. The communication device is the terminal device in FIG. 2. As shown in FIG. 3, the method for determining a communication feed point may include the following steps.

301. When accessing an AP, determine the communication index of the feed point combination of the M feed point tunable antennas when each feed point combination works.

For example, when M is 2 and each feed point tunable antenna includes two feed points, it is assumed that one feed point tunable antenna includes feed point 1 and feed point 2, and the other feed point tunable antenna includes feed point 3 and feed point 4, the feed points of these two feed point adjustable antennas can be composed of four feed point combinations, namely feed point 1 and feed point 3, feed point 1 and feed point 4, feed point 2 and feed point 3 , As well as feed point 2 and feed point 4, these four feed point combinations can form a feed point combination set.

In this embodiment, after the number of feed point tunable antennas and the number of feed points are determined, the feed point combination set of the feed point tunable antennas will also be determined. When a communication device is connected to an AP, the feed point combination of M feed point adjustable antennas can be controlled. Each feed point combination works separately to determine each feed point of the feed point combination of M feed point adjustable antennas. The communication index during the combined work, the communication index is an index used to indicate the level of communication quality, so that it is possible to determine the quality of the communication quality when different feed point combinations work in the feed point combination set. The work of different feed points in the M feed point tunable antennas can be controlled through the GPIO to determine the communication index of the feed point combination of the M feed point tunable antennas when each feed point combination works. GPIO is a general term for switches. When the feed point adjustable antenna includes two feed points, the GPIO can be a single-pole double-throw switch. When the feed point adjustable antenna includes three feed points, the GPIO can be a single-pole three-throw switch. When the point-adjustable antenna includes four feed points, the feed-point adjustable antenna can include two GPIOs. Each of these two GPIOs is a single-pole double-throw switch. The feed-point adjustable antenna can also include a GPIO. This GPIO is Single pole four throw switch.

302. Select a feed point combination to communicate with the AP from the feed point combination set according to the communication index.

In this embodiment, after determining the communication index of each feed point combination set in the feed point combination set of the M feed point tunable antennas, the feed point combination selected for communication with the AP is selected from the feed point combination set according to the communication index. The communication index may include at least one of SNR, RSSI, and PER. When the communication index includes SNR, RSSI, or PER, the feed point combination with the largest SNR, the largest RSSI, or the smallest PER in the feed point combination set may be directly determined as the feed point combination for communicating with the AP.

In this embodiment, when the communication index includes any two of SNR, RSSI, and PER, the first combination set whose RSSI is greater than the first threshold may be selected from the feed point combination set, and then the feed with the smallest PER in the first combination set may be selected. The point combination is determined as a feed point combination that communicates with the AP. It is also possible to first select from the feed point combination set a first combination set whose PER is less than the second threshold, and then determine the feed point combination with the largest RSSI in the first combination set as the feed point combination to communicate with the AP. It is also possible to first select from the feed point combination set a first combination set whose RSSI is greater than the first threshold, and then determine the feed point combination with the highest SNR in the first combination set as the feed point combination to communicate with the AP. It is also possible to first select from the feed point combination set a first combination set whose SNR is greater than a third threshold, and then determine the feed point combination with the largest RSSI in the first combination set as the feed point combination to communicate with the AP. It is also possible to first select from the feed point combination set a first combination set whose PER is less than the second threshold, and then determine the feed point combination with the largest SNR in the first combination set as the feed point combination for communication with the AP. It is also possible to first select from the feed point combination set the first combination set with an SNR greater than the third threshold, and then determine the feed point combination with the smallest PER in the first combination set as the feed point combination for communication with the AP.

When the communication index includes SNR, RSSI, and PER, the first combination set whose RSSI is greater than the first threshold may be selected from the feed point combination set, and then the second combination set whose PER is less than the second threshold may be selected from the first combination set, and finally The feed point combination with the largest SNR in the second combination set is determined as the feed point combination that communicates with the AP. You can also select the first combination set with RSSI greater than the first threshold from the feed point combination set, then select the second combination set with the SNR greater than the third threshold from the first combination set, and finally combine the feed point combination with the smallest PER in the second combination set. Determined as a feed point combination to communicate with the AP. You can also select a first combination set with a PER less than the second threshold from the feed point combination set, and then select a second combination set with an RSSI greater than the first threshold from the second combination set, and finally combine the feed point with the highest SNR in the second combination set Determined as a feed point combination to communicate with the AP. You can also select the first combination set with a PER less than the second threshold from the feed point combination set, then select the second combination set with an SNR greater than the third threshold from the second combination set, and finally combine the feed point combination with the largest RSSI in the second combination set Determined as a feed point combination to communicate with the AP. It is also possible to first select a first combination set with an SNR greater than a third threshold from the feed point combination set, then select a second combination set with a PER less than a second threshold from the second combination set, and finally combine the feed point with the largest RSSI in the second combination set Determined as a feed point combination to communicate with the AP. You can also select a first combination set with a SNR greater than the third threshold from the feed point combination set, then select a second combination set with an RSSI greater than the first threshold from the second combination set, and finally combine the feed point combination with the smallest PER in the second combination set. Determined as a feed point combination to communicate with the AP.

In this embodiment, the received signal of the communication device is R = HS, H is a channel matrix, S is a transmission signal of the AP, R is a matrix of N × 1, H is a matrix of K × N, and S is a matrix of K × L. N is the number of antennas included in the receiving antenna of the communication device, K is the number of antennas included in the transmitting antenna of the AP, and the difference between L and 1 is equal to the difference between the number of feeding points included in the M adjustable-point adjustable antenna and M . It can be seen that when the receiving antenna includes M feed point tunable antennas, and the M feed point tunable antennas include E feed points, the EM column data is added to the AP ’s transmission signal, indicating that Krone The product of grams has changed, that is, the channel model of the MIMO system has changed.

For example, please refer to FIG. 6, which is a schematic diagram of a 2 × 2 MIMO system disclosed in an embodiment of the present invention. As shown in FIG. 6, the upper part is a traditional 2 × 2 MIMO system, and the lower part is a 2 × 2 MIMO system including a tunable antenna at the receiving end. This tunable antenna includes feed point 1 and feed. Point 2 two feed points. It can be seen that the received signal at the receiving end is equal to the product of the signal matrix and the transmitting signal at the transmitting end, but the signal at the transmitting end of the 2 × 2 MIMO system including a tunable antenna at the receiving end changes from a 2 × 1 matrix to a 2 × 2 matrix. It can be seen that one more feed point at the receiving end is equivalent to adding a channel matrix.

In the method for determining a communication feed point described in FIG. 3, when a communication device accesses different APs, a combination of feed points with higher communication quality can be selected to communicate with the AP according to communication indicators, thereby improving communication quality.

After the above communication equipment is successfully manufactured, the test is performed before use, and after the test is completed, the test is performed by software during the test. Please refer to FIG. 7, which is a schematic flowchart of a test method disclosed in an embodiment of the present invention. As shown in FIG. 7, the test method may include the following steps:

Determine the test feed point combination, determine whether the current feed point combination is a test feed point combination, when the current feed point combination is a test feed point combination, determine the PER of the current feed point combination, and determine whether the PER of the current feed point combination is between 0.1 and Between 0.6. When the PER is between 0.1 and 0.6, the test feed point combination is determined again. When the current feed point combination is not a test feed point combination, it is determined whether the PER of the test feed point combination is smaller than the PER of the current feed point combination. When the PER of the test feed point combination is smaller than the PER of the current feed point combination, the current feed point combination is determined as the test feed point combination, and it is determined whether the PER of the current feed point combination is less than 0.1. When the PER of the current feed point combination is not between 0.1 and 0.6, or the PER of the current feed point combination is less than 0.1, adjust the test rate and determine whether the adjusted test rate has been used. When it has not been used, determine the test again. Feed point combination. When the PER of the current feed point combination is less than 0.1, the test rate is increased. When the PER of the current feed point combination is greater than 0.6, the test rate is reduced. When the PER of the current feed point combination is not less than 0.1, or the PER of the test feed point combination is not less than the PER of the current feed point combination, determine whether the PER of the current feed point combination is greater than 0.6. When the PER of the current feed point combination is greater than 0.6, the test rate is adjusted to the last test rate. After adjusting to the previous test rate, or when the PER of the current feed point combination is not greater than 0.6, determine whether all the feed point combinations have been detected, and when all the feed point combinations have been detected, the test ends. When the feed point combinations are not all detected, the test feed point combinations are determined again. Among them, RSSI can also be considered during testing. For example, you can first determine whether the RSSI of the feed point combination is greater than the first threshold. When it is greater than the first threshold, determine the test feed point combination again. PER of the feed point combination. Among them, when the above communication device is actually manufactured, adding a GPIO to a radio frequency (RF) path of the communication device can realize the selection of different feed points in the feed point tunable antenna.

Please refer to FIG. 8, which is a schematic diagram of a communication device and an AP in a home environment according to an embodiment of the present invention. As shown in FIG. 8, the home environment includes an AP, a communication device, and a microwave oven. The co-channel interference manufactured by the microwave oven can be switched on and off to change the SNR of the communication channel. Please refer to FIG. 9, which is a schematic diagram of co-channel interference disclosed in an embodiment of the present invention. The three situations in Figure 9 are the interference of the microwave oven switch on the communication channel when three different feed points are combined to work. As shown in FIG. 9, the interference of the lowest feed point combination is the smallest. Therefore, the combination of feed points can be selected for use in communication between the AP and the communication device.

Based on the network architecture shown in FIG. 2, please refer to FIG. 4, which is a schematic structural diagram of a communication device disclosed by an embodiment of the present invention. The communication device is a communication device in a MIMO system, and includes a receiving antenna. The receiving antenna may include M feed point tunable antennas. Each of the M feed point tunable antennas includes a number of feed points greater than 1 M is an integer greater than 0, and the communication device is the terminal device in FIG. 2. As shown in FIG. 4, the communication device may include:

The determining unit 401 determines the communication index of each feed point combination working in the feed point combination set of M feed point adjustable antennas when accessing the AP, and the communication index is an index used to indicate the level of communication quality;

A selecting unit 402 is configured to select a feed point combination to communicate with the AP from the feed point combination set according to the communication index determined by the determining unit 401.

As a possible implementation manner, the communication indicator may include at least one of SNR, RSSI, and PER.

As a possible implementation manner, the selecting unit 402 may include:

Selecting a first combination set whose RSSI is greater than a first threshold from the feed point combination set;

The feed point combination with the smallest PER in the first combination set is determined as the feed point combination that communicates with the AP.

As a possible implementation manner, the selecting unit 402 may include:

Selecting a first combination set whose RSSI is greater than a first threshold from the feed point combination set;

Selecting a second combination set with a PER less than a second threshold from the first combination set;

The feed point combination with the largest SNR in the second combination set is determined as the feed point combination that communicates with the AP.

As a possible implementation manner, the determining unit 401 is specifically configured to control the work of different feed points through the GPIO to determine the communication index of the feed point combination of the M feed point adjustable antennas when each feed point combination works.

As a possible implementation manner, the received signal of the communication device is R = HS, H is a channel matrix, S is a transmission signal of the AP, R is an N × 1 matrix, H is a K × N matrix, and S is K × L Matrix, N is the number of antennas included in the receiving antenna of the communication device, K is the number of antennas included in the transmitting antenna of the AP, and the difference between L and 1 is equal to the number of feeding points included in the M adjustable-point adjustable antenna and M The difference.

The communication device in the embodiment of the present invention may correspond to the method described in the embodiment of the present invention, and the above and other operations and / or functions of each unit in the communication device are to implement the corresponding process in FIG. 2, and for simplicity, here, No longer.

Based on the network architecture shown in FIG. 2, please refer to FIG. 5, which is a schematic structural diagram of another communication device disclosed by an embodiment of the present invention. As shown in FIG. 5, the communication device may include a processor 501, a memory 502, a receiving antenna 503, and a bus 504. The processor 501 may be a general-purpose central processing unit (CPU), multiple CPUs, microprocessors, Application-Specific Integrated Circuits (ASICs), or one or more programs for controlling the execution of the program of the solution of the present invention. integrated circuit. The memory 502 may be a read-only memory (Read-OnlRMemorR, ROM) or other types of static storage devices that can store static information and instructions, a random access memory (Random Access MemorR, RAM), or other types of devices that can store information and instructions Dynamic storage devices can also be electrically erasable and programmable read-only memory (ElectricallR, Erasable, Programmable, Read-OnlR, MemorR, EEPROM), compact discs (Compact Disc, Read-OnlR, MemorR, CD-ROM) or other optical disc storage, optical disc storage ( (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be stored by a computer Any other media, but not limited to this. The memory 502 may exist independently, and the bus 504 is connected to the processor 501. The memory 502 may also be integrated with the processor 501. The bus 504 may include a path for transmitting information between the aforementioned components. The receiving antenna 503 may include M feed point tunable antennas. Each of the M feed point tunable antennas includes a GPIO, and each of the M feed point tunable antennas includes the number of feed points. Greater than 1, M is an integer greater than 0. among them:

A receiving antenna 503 for receiving a signal;

A set of program code is stored in the memory 502, and the processor 501 is configured to call the program code stored in the memory 502 to perform the following operations:

When accessing the AP, determine the communication index of each feed point combination when the feed point combination of the M feed point tunable antennas is concentrated, and the communication index is an index used to indicate the level of communication quality;

According to the communication index, select the feed point combination from the feed point combination set to communicate with the AP.

As a possible implementation manner, the communication indicator may include at least one of SNR, RSSI, and PER.

As a possible implementation manner, the processor 501 selects a feed point combination from the feed point combination set for communication with the AP according to the communication index, including:

Selecting a first combination set whose RSSI is greater than a first threshold from the feed point combination set;

The feed point combination with the smallest PER in the first combination set is determined as the feed point combination that communicates with the AP.

As a possible implementation manner, the processor 501 selects a feed point combination from the feed point combination set for communication with the AP according to the communication index, including:

Selecting a first combination set whose RSSI is greater than a first threshold from the feed point combination set;

Selecting a second combination set with a PER less than a second threshold from the first combination set;

The feed point combination with the largest SNR in the second combination set is determined as the feed point combination that communicates with the AP.

As a possible implementation manner, the processor 501 determines the communication index when each feed point combination in the feed point combination set of the M feed point tunable antennas works:

Control the work of different feed points through GPIO to determine the communication index of the feed point combination of M feed point adjustable antennas when each feed point combination works.

As a possible implementation manner, the received signal of the communication device is R = HS, H is a channel matrix, S is a transmission signal of the AP, R is an N × 1 matrix, H is a K × N matrix, and S is K × L Matrix, N is the number of antennas included in the receiving antenna of the communication device, K is the number of antennas included in the transmitting antenna of the AP, and the difference between L and 1 is equal to the number of feeding points included in the M adjustable-point adjustable antenna and M The difference.

It should be understood that the communication device according to the embodiment of the present invention may correspond to the communication device shown in FIG. 4, and the above and other operations and / or functions of each module of the communication device are in order to implement the corresponding processes of the methods in FIG. 3 in order to Concise, I won't repeat them here.

An embodiment of the present invention also discloses a storage medium. A program is stored on the storage medium. When the program runs, the method for determining a communication feed point shown in FIG. 3 is implemented.

Those skilled in the art should be aware that, in one or more of the above examples, the functions described in the present invention may be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The specific embodiments described above further describe the objectives, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. The scope of protection, any modification, equivalent replacement, or improvement made on the basis of the technical solution of the present invention shall be included in the scope of protection of the present invention.

Claims (14)

A method for determining a communication feed point is characterized in that the method is applied to a communication device in a multiple-input multiple-output MIMO system, where the communication device includes a receiving antenna, and the receiving antenna includes M tunable antennas. Each of the M feed-point tunable antennas includes a feed point number greater than 1, and M is an integer greater than 01, including: When accessing the wireless access point AP, determining a communication index at the time of working of each feed point combination in the feed point combination set of the M tunable antennas, where the communication index is an index used to indicate the level of communication quality; Selecting a feed point combination to communicate with the AP from the feed point combination set according to the communication index. The method according to claim 1, wherein the communication index comprises at least one of a signal-to-noise ratio (SNR), a received signal strength indicator (RSSI), and a packet error rate (PER). The method according to claim 2, wherein the selecting a feed point combination from the feed point combination set to communicate with the AP according to the communication index comprises: Selecting a first combination set whose RSSI is greater than a first threshold from the feed point combination set; The feed point combination with the smallest PER in the first combination set is determined as the feed point combination that communicates with the AP. The method according to claim 2, wherein the selecting a feed point combination from the feed point combination set to communicate with the AP according to the communication index comprises: Selecting a first combination set whose RSSI is greater than a first threshold from the feed point combination set; Selecting a second combination set with a PER less than a second threshold from the first combination set; The feed point combination with the largest SNR in the second combination set is determined as the feed point combination that communicates with the AP. The method according to any one of claims 1 to 4, wherein each of the M tunable antennas includes a general-purpose input and output GPIO, and the determining of the M feed points The communication indicators of the feed point combination of the tunable antenna when each feed point combination works include: Control the work of different feed points through the GPIO to determine the communication index of the feed point combination of the M feed point tunable antennas when each feed point combination works. The method according to any one of claims 1 to 5, wherein the received signal of the communication device is R = HS, the H is a channel matrix, the S is a transmission signal of the AP, and the R N × 1 matrix, H is K × N matrix, S is K × L matrix, N is the number of antennas included in the receiving antenna of the communication device, and K is the number The number of antennas included in the transmitting antenna of the AP. The difference between L and 1 is equal to the difference between the number of feeding points included in the M feedpoint tunable antennas and M. A communication device, characterized in that the communication device is a communication device in a MIMO system, the communication device includes a receiving antenna, the receiving antenna includes M adjustable feed point antennas, and the M adjustable feed points are adjustable Each feed point tunable antenna in the antenna includes a number of feed points greater than 1, and M is an integer greater than 0, including: A determining unit, configured to determine, when accessing the AP, a communication index at the time when each feed point combination in the feed point combination set of the M feed point tunable antennas works, and the communication index is an index used to indicate the level of communication quality ; A selecting unit is configured to select a feed point combination to communicate with the AP from the feed point combination set according to the communication index determined by the determining unit. The communication device according to claim 7, wherein the communication index includes at least one of SNR, RSSI, and PER. The communication device according to claim 8, wherein the selecting unit comprises: Selecting a first combination set whose RSSI is greater than a first threshold from the feed point combination set; The feed point combination with the smallest PER in the first combination set is determined as the feed point combination that communicates with the AP. The communication device according to claim 8, wherein the selecting unit comprises: Selecting a first combination set whose RSSI is greater than a first threshold from the feed point combination set; Selecting a second combination set with a PER less than a second threshold from the first combination set; The feed point combination with the largest SNR in the second combination set is determined as the feed point combination that communicates with the AP. The communication device according to any one of claims 7 to 10, wherein each of the M tunable antennas includes a GPIO, and the determining unit is specifically configured to pass the tunable antenna. The GPIO controls the work of different feed points to determine the communication index of each feed point combination in the feed point combination set of the M feed point adjustable antennas. The communication device according to any one of claims 7 to 11, wherein a received signal of the communication device is R = HS, the H is a channel matrix, the S is a transmission signal of the AP, and the R is a N × 1 matrix, H is a K × N matrix, S is a K × L matrix, N is the number of antennas included in the receiving antenna of the communication device, and K is The number of antennas included in the transmitting antenna of the AP, and the difference between L and 1 is equal to the difference between the number of feeding points included in the M feedpoint tunable antennas and M. A communication device, wherein the communication device is a communication device in a MIMO system, and includes a processor, a memory, a receiving antenna, and a bus, and the processor, the memory, and the receiving antenna are connected through the bus. The receiving antenna includes M feed point tunable antennas, and each of the M feed point tunable antennas includes a number of feed points greater than 1, and M is an integer greater than 0, and the receiving The antenna is used to receive signals, the memory is used to store program code, the processor is used to execute the program code stored in the memory, and when the processor executes the program code stored in the memory, the processor is caused to execute A method for determining a communication feed point according to any one of claims 1-6. A storage medium, characterized in that a program is stored on the storage medium, and when the program runs, the method for determining a communication feed point according to any one of claims 1-6 is implemented.

Images