CN106559107B - Method and device for determining transmitting and receiving antenna - Google Patents

Method and device for determining transmitting and receiving antenna Download PDF

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Publication number
CN106559107B
CN106559107B CN201510595223.1A CN201510595223A CN106559107B CN 106559107 B CN106559107 B CN 106559107B CN 201510595223 A CN201510595223 A CN 201510595223A CN 106559107 B CN106559107 B CN 106559107B
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antenna
antenna combination
sta
optimal
combination
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CN106559107A (en
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朱冲
张科
陈志刚
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Huawei Device Co Ltd
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Huawei Device Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters

Abstract

The invention provides a method and a device for determining a transmitting-receiving antenna, comprising the following steps: an Access Point (AP) receives an access request sent by a work Station (STA); the AP determines a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination; and if the first optimal antenna combination is used by the AP to meet a second preset condition, the first optimal antenna combination is used by the AP to send signals to the STA and receive the signals of the STA.

Description

Method and device for determining transmitting and receiving antenna
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for determining a transmitting/receiving antenna.
Background
The wireless channel often changes dramatically, directly resulting in unpredictable channel fading. In addition, the wireless channel is also subject to multipath interference and interference from other wireless devices. In the current wireless channel anti-interference scheme, the intelligent antenna technology is a more effective anti-interference means. When an Access Point (AP) selects a transmitting antenna for transmitting a signal to a Station (STA) by using an intelligent antenna technology, the AP automatically selects the transmitting antenna or adjusts parameters of the transmitting antenna, and can adapt to the continuous change of a wireless channel, so that the wireless channel between the AP and the STA maintains a better state.
When the STA accesses the AP, a Wi-Fi subsystem of an intelligent antenna system in the AP traverses all antenna combinations comprising N antennas in the M antennas aiming at the accessed STA, calculates communication indexes such as a frame error rate, a frame retransmission rate, a frame abandon rate and signal receiving power of received signals of the STA, and the like obtained according to each antenna combination, and uses a group of antenna combinations with the optimal communication indexes as antenna combinations used for communicating with the STA. Every time the smart antenna system works, it isThe need to select N antennas among M antennas means that M antennas are neededNAnd traversing and calculating the possible antenna combinations, thereby selecting one antenna combination and using the antenna combination as the antenna combination for communication.
As the number of antennas in the antenna array of the smart antenna system increases, some antenna arrays may include up to thousands of antennas, and the efficiency of selecting a transmitting antenna by the smart antenna system is very low, so that an accessed STA needs to wait for a long time to receive a signal transmitted by an AP.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining a transmitting-receiving antenna, which are used for solving the problems of low efficiency of determining the transmitting-receiving antenna in an intelligent antenna system and low speed of receiving signals sent by an AP (access point) by an STA (station).
In a first aspect, a method for determining a transceiving antenna is provided, including:
an Access Point (AP) receives an access request sent by a work Station (STA);
the AP determines a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination;
and if the first optimal antenna combination is used by the AP to meet a second preset condition, the first optimal antenna combination is used by the AP to send signals to the STA and receive the signals of the STA.
With reference to the first aspect, in a first possible implementation manner of the first aspect,
the AP determines a training STA accessed to the AP, and determines a second optimal antenna combination meeting the first preset condition for the training STA in all possible antenna combinations consisting of N antennas in M antennas, wherein the M antennas are antennas installed in the AP;
the AP determines an antenna combination set corresponding to the second optimal antenna combination from the K antenna combination sets, and stores the antenna combination set corresponding to the second optimal antenna combination into the preset antenna combination set;
wherein the AP determines the K antenna combination sets according to the following mode:
the AP determines K antenna radiation direction ranges;
and the AP divides all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are positioned in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining, by the AP, a training STA accessing the AP includes:
the AP receives a management frame sent by the STA;
and if the AP determines that the management frame has the training identifier, determining the STA sending the management frame as a training STA.
With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the method further includes:
and the AP enhances the radiation intensity of the antennas in the preset antenna combination set.
With reference to the first aspect or any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:
if the first optimal antenna combination does not meet the second preset condition, the AP determines a third optimal antenna combination meeting the first preset condition for the STA in antenna combinations except the preset antenna combination set;
and the AP uses the third optimal antenna combination to transmit signals to the STA and receive the signals transmitted by the STA.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, after the AP uses the third optimal antenna combination to transmit a signal to the STA and receive a signal transmitted by the STA, the method further includes:
the AP determines an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and stores the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set;
wherein the AP determines the K antenna combination sets according to the following mode:
the AP determines all possible antenna combinations consisting of N antennas in M antennas, and determines K antenna radiation direction ranges, wherein the M antennas are antennas installed in the AP;
and the AP divides all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are positioned in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
With reference to the first aspect or any one of the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect, the first preset condition is any one or more of the following conditions:
the antenna combination with the maximum signal reception power;
antenna combination with minimum frame error rate;
antenna combination with minimum frame retransmission rate;
antenna combinations with minimum frame dropping rates.
With reference to the first aspect or any one of the first to sixth possible implementation manners of the first aspect, in a seventh possible implementation manner of the first aspect, the second preset condition is any one or more of the following conditions:
the maximum signal received power is greater than a first threshold;
the minimum frame error rate is less than a second threshold;
the minimum frame retransmission rate is less than a third threshold;
the minimum frame discard rate is less than a fourth threshold.
In a second aspect, an apparatus for determining a transmit/receive antenna is provided, the apparatus comprising:
the receiving and sending unit is used for receiving an access request sent by a working Station (STA);
a determining unit, configured to determine a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination;
and the transceiver unit is configured to send a signal to the STA and receive a signal of the STA by using the first optimal antenna combination if the first optimal antenna combination meets a second preset condition.
With reference to the second aspect, in a first possible implementation manner of the second aspect,
the determining unit is further configured to determine a training STA accessing the apparatus, and determine a second optimal antenna combination satisfying the first preset condition for the training STA among all possible antenna combinations composed of N antennas of M antennas, where the M antennas are antennas installed in the apparatus;
determining an antenna combination set corresponding to the second optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the second optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining radiation direction ranges of K antennas;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the transceiver unit is specifically configured to receive a management frame sent by an STA;
the determining unit is specifically configured to determine, if it is determined that the management frame includes the training identifier, that the STA that transmits the management frame is a training STA.
With reference to the first possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the transceiver unit is further configured to:
and enhancing the radiation intensity of the antennas in the preset antenna combination set.
With reference to the second aspect or any one of the first to the third possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the determining unit is further configured to:
if the first optimal antenna combination does not meet the second preset condition, determining a third optimal antenna combination meeting the first preset condition for the STA in antenna combinations except the preset antenna combination set;
the transceiver unit is further configured to transmit a signal to the STA and receive a signal transmitted by the STA using the third optimal antenna combination.
With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the determining unit is further configured to:
determining an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining all possible antenna combinations consisting of N antennas in M antennas, and determining K antenna radiation direction ranges, wherein the M antennas are antennas installed in the device;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
With reference to the second aspect or any one of the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner of the second aspect, the first preset condition is any one or more of the following conditions:
the antenna combination with the maximum signal reception power;
antenna combination with minimum frame error rate;
antenna combination with minimum frame retransmission rate;
antenna combinations with minimum frame dropping rates.
With reference to the second aspect or any one of the first to sixth possible implementation manners of the second aspect, in a seventh possible implementation manner of the second aspect, the second preset condition is any one or more of the following conditions:
the maximum signal received power is greater than a first threshold;
the minimum frame error rate is less than a second threshold;
the minimum frame retransmission rate is less than a third threshold;
the minimum frame discard rate is less than a fourth threshold.
In a third aspect, an AP is provided, including: the antenna comprises a processor, a memory, an Ethernet chip, a Wi-Fi chip, a radio frequency unit, an antenna selection control unit and an antenna array;
the processor is used for receiving an access request sent by a working station STA through the antenna array;
a processor, configured to determine a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination;
and the processor is used for sending a signal to the STA and receiving the signal of the STA by using the first optimal antenna combination if the first optimal antenna combination meets a second preset condition.
With reference to the third aspect, in a first possible implementation manner of the third aspect, the processor is further configured to determine a training STA accessing the AP, and determine, for the training STA, a second optimal antenna combination meeting the first preset condition in all possible antenna combinations composed of N antennas of M antennas, where the M antennas are antennas installed in the AP;
determining an antenna combination set corresponding to the second optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the second optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining radiation direction ranges of K antennas;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the processor is configured to receive, through an antenna array, a management frame sent by an STA;
and the processor is used for determining that the STA sending the management frame is a training STA if the training identifier exists in the management frame.
With reference to the first possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the processor is configured to enhance, by the antenna array, the radiation intensity of the antennas in the preset antenna combination set.
With reference to the third aspect or any one of the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the processor is further configured to:
if the first optimal antenna combination does not meet the second preset condition, determining a third optimal antenna combination meeting the first preset condition for the STA in antenna combinations except the preset antenna combination set;
and the processor is used for transmitting signals to the STA and receiving the signals transmitted by the STA by using the third optimal antenna combination through an antenna array.
With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the processor is further configured to:
determining an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining all possible antenna combinations consisting of N antennas in M antennas, and determining K antenna radiation direction ranges, wherein the M antennas are antennas installed in the AP;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
With reference to the third aspect or any one of the first to fifth possible implementation manners of the third aspect, in a sixth possible implementation manner of the third aspect, the first preset condition is any one or more of the following conditions:
the antenna combination with the maximum signal reception power;
antenna combination with minimum frame error rate;
antenna combination with minimum frame retransmission rate;
antenna combinations with minimum frame dropping rates.
With reference to the third aspect or any one of the first to sixth possible implementation manners of the third aspect, in a seventh possible implementation manner of the third aspect, the second preset condition is any one or more of the following conditions:
the maximum signal received power is greater than a first threshold;
the minimum frame error rate is less than a second threshold;
the minimum frame retransmission rate is less than a third threshold;
the minimum frame discard rate is less than a fourth threshold.
According to the method and the device provided by the embodiment of the invention, when the AP determines the optimal antenna combination for the STA, whether the optimal antenna combination exists in a preset antenna combination set is determined, and if the optimal antenna combination exists, a signal is sent to the STA according to the optimal antenna combination. In the method, the AP does not need to select the optimal antenna combination from all possible antenna combinations, so that the time for selecting the optimal antenna combination is reduced, the efficiency for selecting the optimal antenna combination is improved, and the speed for transmitting signals to the AP by the STA is further improved.
Drawings
FIG. 1 is a system diagram of a typical WLAN deployment scenario;
fig. 2 is a schematic view of an antenna radiation according to an embodiment of the present invention;
fig. 3 is a schematic radiation diagram of another antenna according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for determining a transmitting/receiving antenna according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an information element structure according to an embodiment of the present invention;
fig. 6 is a schematic diagram of STA distribution according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an apparatus for determining a transmitting/receiving antenna according to an embodiment of the present invention;
fig. 8 is a schematic diagram of an AP structure according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The embodiment of the invention can be applied to a Wireless Local Area Network (WLAN), and the standard adopted by the WLAN at present is IEEE (Institute of Electrical and Electronics Engineers, Chinese) 802.11 series. The WLAN may include a plurality of Basic Service Sets (BSS), where a network node in a BSS is a Station (STA), and the Station includes an Access Point (AP) and a Non-Access Point (Non-AP STA). Each basic service set may include one AP and a plurality of Non-AP STAs associated with the AP.
And the access point type station is also called as a wireless access point or a hot spot, and the like. The AP is an access point for a mobile subscriber to enter a wired network, and is mainly deployed in a home, a building, and a campus, and typically has a coverage radius of several tens of meters to hundreds of meters, and may be deployed outdoors. The AP acts as a bridge connecting the network and the wireless network, and mainly functions to connect the wireless network clients together and then to access the wireless network to the ethernet. Specifically, the AP may be a terminal device or a network device with a Wi-Fi (Wireless Fidelity) chip. Optionally, the AP may be a device supporting 802.11ax standard, and further optionally, the AP may be a device supporting multiple WLAN standards such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11 a.
A Non-Access Point (Non-AP STA) may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example: the mobile phone supporting the WiFi communication function, the tablet computer supporting the WiFi communication function, the set top box supporting the WiFi communication function, the smart television supporting the WiFi communication function, the smart wearable device supporting the WiFi communication function, the vehicle-mounted communication device supporting the WiFi communication function and the computer supporting the WiFi communication function. Optionally, the station may support an 802.11ax system, and further optionally, the station supports multiple WLAN systems such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11 a.
Fig. 1 is a system diagram of a typical WLAN deployment scenario, including an AP in communication with STA1, STA2, and STA3, and 3 STAs.
Fig. 2 is a schematic view of an antenna radiation according to an embodiment of the present invention. The radiation pattern of the antenna in fig. 2 can achieve 360-degree omni-directional coverage, and the signal radiation intensity in each direction is the same. When the antenna in fig. 2 is used, the signal radiation intensity in the receiving direction cannot be increased independently. In order to enhance the signal radiation intensity in the direction of the signal receiving party without increasing the system power significantly, the smart antenna technology is mainly adopted at present. In an AP using smart antenna technology, a plurality of antennas are installed, and a radiation pattern of each antenna can only radiate at a certain angle, for example, 90 degrees. An AP using smart antenna technology can detect a Direction Of Arrival (DOA) Of a signal, estimate a Direction Of an access STA, and transmit the signal to the access STA using an antenna Of an installed antenna whose radiation pattern corresponds to the Direction Of the access STA with respect to the AP.
Specifically, as shown in fig. 3, another antenna radiation diagram provided in the embodiment of the present invention is shown. Each antenna in fig. 3 can only radiate at a certain angle. Each antenna corresponds to one terminal, so that each terminal can obtain stronger received signals.
When the STA accesses the AP using the smart antenna technology, the AP may send a test data frame to the STA, and count information such as a frame error rate, a frame retransmission rate, a frame discard rate, and a signal reception power of a received signal of the STA of the sent test data frame. The AP may select an optimal set of antenna combinations to use for communicating with the STA based on the data obtained from the test.
Based on the above description, as shown in fig. 4, a flowchart of a method for determining a transceiving antenna according to an embodiment of the present invention is provided.
Referring to fig. 4, the method includes:
step 401: an Access Point (AP) receives an access request sent by a work Station (STA);
step 402: the AP determines a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination;
step 403: and if the first optimal antenna combination is used by the AP to meet a second preset condition, the first optimal antenna combination is used by the AP to send signals to the STA and receive the signals of the STA.
In step 401, before the AP receives the access request sent by the STA, the identity of the STA may be authenticated, and the AP may not respond to the access request sent by the STA until the identity authentication is passed.
In the embodiment of the present invention, the STA may be any terminal, for example, a mobile phone, a computer, a tablet computer, a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a wearable device, an Internet Protocol (IP) phone, a network printer, an electronic book reader, and the like.
In step 402, M antennas are installed in the AP, and N antennas are needed when the AP communicates with the STA. When the STA accesses the AP, the AP selects N antennas from the M antennas as an antenna combination, and determines that the antenna combination is used as an antenna combination used for communicating with the STA when the selected antenna combination meets a first preset condition.
The first preset condition may be any one or more of the following conditions:
the antenna combination with the maximum signal reception power;
antenna combination with minimum frame error rate;
antenna combination with minimum frame retransmission rate;
antenna combinations with minimum frame dropping rates.
In the embodiment of the present invention, an AP may predetermine a preset antenna combination set, where antenna combinations that may be included in the preset antenna combination set are generally antenna combinations frequently used by STAs accessing the AP. The predetermined antenna combination set may not include any antenna combination. When the STA accesses the AP, the AP preferentially determines whether a first optimal antenna combination meeting a first preset condition exists in the preset antenna combination set, so that the first optimal antenna combination can be rapidly determined, and the working efficiency of the system is improved.
The method for determining the preset antenna combination set by the AP has various modes, and in order to accurately and quickly determine the preset antenna combination set, the preset antenna combination set can be determined by training the STA in the embodiment of the invention. The AP determines antenna combinations used for communicating with the accessed training STA, takes the antenna combinations with the antenna radiation directions in the same range as the antenna combinations used for communicating with the training STA as a set, and determines the set as a preset antenna combination set.
Specifically, the AP determines a training STA accessing the AP, and determines a second optimal antenna combination satisfying the first preset condition for the training STA among all possible antenna combinations composed of N antennas of M antennas, where the M antennas are antennas installed in the AP.
The AP determines an antenna combination set corresponding to the second optimal antenna combination from the K antenna combination sets, and stores the antenna combination set corresponding to the second optimal antenna combination into the preset antenna combination set; wherein the AP determines the K antenna combination sets according to the following mode:
the AP determines K antenna radiation direction ranges;
and the AP divides all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are positioned in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
For example, the AP determines an antenna radiation direction range as follows: covering the horizontal direction of 0-120 degrees. The AP firstly determines all possible antenna combinations determined by N antennas in the M antennas, selects the antenna combinations of which the antenna radiation directions are located in the direction covering 0-120 degrees horizontally in all the possible antenna combinations, then determines the selected antenna combinations from all the possible antenna combinations as an antenna combination set, and finally stores the antenna combination set into a preset antenna combination set.
By the method, the K antenna combination sets can be determined according to the radiation direction ranges of the K antennas.
For example, the AP may divide the radiation patterns of M antennas installed in the AP into six antenna radiation direction ranges according to the following rule:
first antenna radiation direction range: covering the horizontal direction of 0-120 degrees;
second antenna radiation direction range: covering the horizontal direction of 120-240 degrees;
third antenna radiation direction range: covering the horizontal direction of 240-360 degrees;
fourth antenna radiation direction range: covering the direction vertical to 0-120 degrees;
fifth antenna radiation direction range: covering the direction vertical to 120-240 degrees;
sixth antenna radiation direction range: covering the direction vertical to 240-360 degrees.
Of course, the above is only an example, the radiation direction range of the antenna may be determined according to actual situations, and the size of each radiation direction range of the antenna may be the same or different, and the embodiment of the present invention does not limit this.
It should be noted that, when the training STA is not used for training, there may not be any antenna combination in the preset antenna combination set.
Optionally, in order to improve the accuracy of training, after determining that an access request sent by a training STA is received, the AP enhances the radiation intensity of antennas in the preset antenna combination set. This may make the signal in the radiation direction in which the training STA is located stronger.
By training the STA, the AP determines the distribution condition of the STA normally accessed to the AP, and thus determines a first optimal antenna combination possibly corresponding to the STA normally accessed to the AP.
The AP may determine whether the accessed STA is a training STA by determining whether a management frame sent by the accessed STA carries a training identifier. Specifically, the AP receives a management frame sent by the STA; and when the AP determines that the training identifier exists in the management frame, determining the STA sending the management frame as a training STA.
The management frame is mainly used for functions of negotiation, association, authentication, synchronization and the like between the STA and the AP. The management frame includes the following frames:
beacon Frame; a Probe Request Frame; a Probe Response Frame; an authentication Request Frame Auth Request Frame; an authentication Response Frame Auth Response Frame; an Association Request Frame; an Association Response Frame.
Alternatively, the training identifier may be a customized information element (information element) in a frame body (frame body) of the management frame. Fig. 5 is a schematic diagram of an information element structure according to an embodiment of the present invention. In fig. 5, the information Element generally includes a 1-byte Element identification (Element ID) field, a 1-byte Length (Length) field, and an information (information) field having a non-fixed Length. The Element ID in the information Element corresponding to the training identifier may be a Reserved (Reserved) ID unused by IEEE 802.11, e.g., 120. The Information field in the Information element corresponding to the training identifier may contain two parts: VERSION and VENDROR STRING, wherein the VERSION part represents the VERSION of the training mark and can occupy 2 bytes; the vendor training part may be used to indicate information such as vendor information of the STA or AP.
In step 403, since the first optimal antenna combination determined by the AP for the STA is determined from the preset antenna combination set, and is not determined from all possible antenna combinations consisting of N antennas of the M antennas, the first optimal antenna combination may not satisfy the second preset condition required to be satisfied by the communication. Therefore, after the AP selects a first optimal antenna combination from the preset antenna combination set, it may also need to determine whether the selected first optimal antenna combination can satisfy a second preset condition, and only after the second preset condition is satisfied, the first optimal antenna combination is used to transmit a signal to an accessed STA and receive a signal transmitted by the STA.
Specifically, the second preset condition may be any one or more of the following conditions:
the maximum signal received power is greater than a first threshold;
the minimum frame error rate is less than a second threshold;
the minimum frame retransmission rate is less than a third threshold;
the minimum frame discard rate is less than a fourth threshold.
It should be noted that the first threshold, the second threshold, the third threshold, and the fourth threshold may be set according to actual situations; alternatively, the first threshold, the second threshold, the third threshold, and the fourth threshold may be set according to the specification in the wlan standard, which is not limited in this embodiment of the present invention.
If the AP determines that the first optimal antenna combination does not meet the second preset condition, determining a third optimal antenna combination meeting the first preset condition for the STA in the antenna combinations except the preset antenna combination set; and the AP uses the third optimal antenna combination to transmit signals to the STA and receive the signals transmitted by the STA.
It should be noted that, the antenna combinations other than the preset antenna combination set refer to the following antenna combinations: and in all possible antenna combinations consisting of N antennas in the M antennas, except the preset antenna combination set.
Step 402 describes a method for determining a preset antenna combination set by training a STA, and in the embodiment of the present invention, the preset antenna combination set may also be determined by a STA accessing an AP, or the preset antenna combination set may be supplemented by the STA accessing the AP.
Specifically, if the preset antenna combination set is empty, the preset antenna combination set may be determined by the STA accessing the AP by the following method:
the AP determines an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and stores the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set;
wherein the AP determines the K antenna combination sets according to the following mode:
the AP determines all possible antenna combinations consisting of N antennas in M antennas, and determines K antenna radiation direction ranges, wherein the M antennas are antennas installed in the AP;
and the AP divides all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are positioned in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
Correspondingly, if the preset antenna combination set is not empty, the preset antenna combination set can be supplemented by the STA accessing the AP by the following method:
and the AP determines an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and stores the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set.
The preset antenna combination set is supplemented, so that the AP can determine the antenna combination used for communicating with the STA in the preset antenna combination set for the accessed STA more quickly.
The above process flow is described in detail below by way of examples.
The AP is typically less likely to move location after configuration is complete. In many scenarios, the directions of the STAs accessing the AP may be within a fixed direction range, and the AP may preferentially select one antenna combination as a transceiving antenna within the fixed direction range, so that the antenna combination used for transmitting signals to the accessed STAs or receiving signals transmitted by the accessed STAs can be quickly determined.
Fig. 6 is a schematic view of STA distribution according to an embodiment of the present invention. In fig. 6, the antenna radiation direction range of the AP includes 4 STAs, wherein STA1 and STA2 are training STAs, and STA3 and STA4 are non-training STAs. STA1 and STA4 are located in the first antenna radiation direction range, STA2 is located in the second antenna radiation direction range, and STA3 is located in the third antenna radiation direction range.
M antennas are installed in the AP, and N antennas are required for the AP to communicate with the STA. The preset antenna combination set in the AP is empty.
The AP may first determine K sets of antenna combinations.
After receiving the access requests sent by STA1 and STA2, the AP determines an optimal antenna combination satisfying the first preset condition for STA1 among all possible antenna combinations consisting of N antennas among the M antennas, and uses the optimal antenna combination as an antenna combination for communicating with STA 1; among all possible antenna combinations consisting of N of the M antennas, an optimal antenna combination satisfying the first preset condition is determined for the STA2 and is used as an antenna combination for communication with the STA 2.
The AP determines, from the K antenna combination sets, an antenna combination set corresponding to an antenna combination used for communicating with the STA1, determines, from the K antenna combination sets, an antenna combination set corresponding to an antenna combination used for communicating with the STA2, and stores the two determined antenna combination sets in a preset antenna combination set.
When STA4 accesses the AP, the AP determines a first optimal antenna combination for STA4 in the preset antenna combination set, and since STA4 and STA1 are both located in the first antenna radiation direction range, the first optimal antenna combination determined for STA4 can satisfy a second preset condition. At this point, the AP communicates with STA4 using the first optimal antenna combination determined for STA 4. Since the AP is the first optimal antenna combination determined for the STA4 in the preset antenna combination set, the time for determining the first optimal antenna combination is reduced, and the efficiency of the system is improved.
When the STA3 accesses the AP, the AP determines a first optimal antenna combination for the STA3 in the preset antenna combination set, and since the STA3 is located in the third antenna radiation direction range, the second optimal antenna combination cannot be satisfied using the first optimal antenna combination determined for the STA3, so that the second optimal antenna combination needs to be determined again for the STA3 in antenna combinations other than the preset antenna combination set.
After the AP determines the second optimal antenna combination for the STA3, the AP may also store the antenna set corresponding to the second optimal antenna combination of the STA3 in the K antenna combination sets to the preset antenna combination set, and when the STA located in the third antenna radiation range accesses the AP again, the first optimal antenna combination may be determined directly from the preset antenna combination.
For the above method flow, an embodiment of the present invention further provides a device for determining a transmitting/receiving antenna, and specific contents of the device may be implemented with reference to the above method, which is not described herein again.
As shown in fig. 7, an embodiment of the present invention provides a schematic structural diagram of an apparatus for determining a transmitting/receiving antenna, where the apparatus includes:
a transceiver unit 701, configured to receive an access request sent by a station STA;
a determining unit 702, configured to determine a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination;
the transceiver unit 701 is configured to send a signal to the STA and receive a signal of the STA by using the first optimal antenna combination if the first optimal antenna combination meets a second preset condition.
Preferably, the determining unit 702 is further configured to determine a training STA accessing the apparatus, and determine a second optimal antenna combination meeting the first preset condition for the training STA in all possible antenna combinations composed of N antennas of M antennas, where the M antennas are antennas installed in the apparatus;
determining an antenna combination set corresponding to the second optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the second optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining radiation direction ranges of K antennas;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
Preferably, the transceiver 701 is specifically configured to receive a management frame sent by an STA;
the determining unit 702 is specifically configured to determine, if it is determined that the management frame includes the training identifier, that the STA that transmits the management frame is a training STA.
Preferably, the transceiver 701 is further configured to:
and enhancing the radiation intensity of the antennas in the preset antenna combination set.
Preferably, the determining unit 702 is further configured to:
if the first optimal antenna combination does not meet the second preset condition, determining a third optimal antenna combination meeting the first preset condition for the STA in antenna combinations except the preset antenna combination set;
the transceiving unit 701 is further configured to transmit a signal to the STA and receive a signal transmitted by the STA using the third optimal antenna combination.
Preferably, the determining unit 702 is further configured to:
determining an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining all possible antenna combinations consisting of N antennas in M antennas, and determining K antenna radiation direction ranges, wherein the M antennas are antennas installed in the device;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
Preferably, the first preset condition is any one or more of the following conditions:
the antenna combination with the maximum signal reception power;
antenna combination with minimum frame error rate;
antenna combination with minimum frame retransmission rate;
antenna combinations with minimum frame dropping rates.
Preferably, the second preset condition is any one or more of the following conditions:
the maximum signal received power is greater than a first threshold;
the minimum frame error rate is less than a second threshold;
the minimum frame retransmission rate is less than a third threshold;
the minimum frame discard rate is less than a fourth threshold.
As shown in fig. 8, an AP structure diagram provided in an embodiment of the present invention is that an AP 800 includes: the antenna system comprises a processor 801, a memory 802, an Ethernet chip 803, a Wi-Fi chip 804, a radio frequency unit 805, an antenna selection control unit 806 and an antenna array 807, wherein the antenna array 807 comprises M antennas. The Wi-Fi chip 804 and the radio frequency unit 805 are connected by N radio frequency transceiving channels, where N is a positive integer less than or equal to M. The rf unit 805 and the antenna selection control unit 806 are connected by N rf transceiving channels. The antenna selection control unit 806 is connected to the antenna array 807 through M rf transceiving channels.
The processor 801 connects various parts of the entire AP using various interfaces and lines, and performs various functions of the AP 800 and processes data by executing or executing instructions stored in the memory 802 and calling data stored in the memory 802. Alternatively, processor 801 may include one or more processing units; preferably, the processor 801 may integrate a modem processor, wherein the modem processor handles primarily wireless communications. The processor 801 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP. The processor 801 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
The memory 802 may be used to store instructions and data, the memory 802 may mainly include a memory instruction area and a memory data area, and the memory data area may store the association relationship between the joint touch gesture and the application program function; the storage instruction area may store an operating system, instructions required for at least one function, and the like. The memory 802 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory 802 may also include a non-volatile memory (ROM), such as a read-only memory (ROM), a flash memory (HDD), a hard disk (HDD), or a solid-state drive (SSD); the memory 802 may also comprise a combination of the above-described types of memory.
The ethernet chip 803 is used for operations such as transceiving and processing of ethernet protocol data.
The Wi-Fi chip 804 is used for transceiving, processing and the like of Wi-Fi protocol data.
The radio frequency unit 805 is used for amplifying a signal to be transmitted output by the Wi-Fi chip 804 and then transmitting the amplified signal through an antenna; amplifying a signal received on an antenna and sending the amplified signal to a Wi-Fi chip; and performing combining operation on the receiving/signaling signals. The rf unit 805 may generally include an LNA (Low Noise Amplifier), a PA (Power Amplifier), a duplexer, and the like.
The antenna selection control unit 806 selects radio frequency channels of different antennas according to the antenna selection control information provided by the processor 801. The antenna selection control unit 806 controls enabling of N channels of the M radio frequency channels and establishes a mapping relationship with the N radio frequency transceiving channels on the Wi-Fi chip 804. The antenna selection control unit 806 typically includes components such as single pole, multiple throw radio frequency switches, control logic devices, and the like.
The antenna array 807 is composed of M antennas, each antenna is connected to a radio frequency switch in the antenna selection control unit 806 through a radio frequency channel, and the antenna array 807 is responsible for transmitting and receiving electromagnetic waves into the air, thereby transmitting signals to STAs or receiving signals transmitted by STAs.
A processor 801, configured to receive an access request sent by a station STA through an antenna array 807;
a processor 801, configured to determine a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination;
a processor 801, configured to send a signal to the STA and receive a signal of the STA using the first optimal antenna combination if the first optimal antenna combination satisfies a second preset condition.
Preferably, the processor 801 is further configured to determine a training STA accessing the AP, and determine a second optimal antenna combination meeting the first preset condition for the training STA in all possible antenna combinations composed of N antennas of M antennas, where the M antennas are antennas installed in the AP;
determining an antenna combination set corresponding to the second optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the second optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining radiation direction ranges of K antennas;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
Preferably, the processor 801 is configured to receive a management frame sent by the STA through the antenna array 807;
the processor 801 is configured to determine, if it is determined that the management frame includes a training identifier, that the STA sending the management frame is a training STA.
Preferably, the processor 801 is configured to enhance the radiation intensity of the antennas in the preset set of antenna combinations through an antenna array 807.
Preferably, the processor 801 is further configured to:
if the first optimal antenna combination does not meet the second preset condition, determining a third optimal antenna combination meeting the first preset condition for the STA in antenna combinations except the preset antenna combination set;
the processor 801 is configured to transmit signals to the STA and receive signals transmitted by the STA through an antenna array 807 using the third optimal antenna combination.
Preferably, the processor 801 is further configured to:
determining an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining all possible antenna combinations consisting of N antennas in M antennas, and determining K antenna radiation direction ranges, wherein the M antennas are antennas installed in the AP;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
Preferably, the first preset condition is any one or more of the following conditions:
the antenna combination with the maximum signal reception power;
antenna combination with minimum frame error rate;
antenna combination with minimum frame retransmission rate;
antenna combinations with minimum frame dropping rates.
Preferably, the second preset condition is any one or more of the following conditions:
the maximum signal received power is greater than a first threshold;
the minimum frame error rate is less than a second threshold;
the minimum frame retransmission rate is less than a third threshold;
the minimum frame discard rate is less than a fourth threshold.
In summary, according to the method and apparatus provided by the embodiments of the present invention, when determining an optimal antenna combination for an STA, an AP first determines whether the optimal antenna combination exists in a preset antenna combination set, and if so, sends a signal to the STA according to the optimal antenna combination. In the method, the AP does not need to select the optimal antenna combination from all possible antenna combinations, so that the time for selecting the optimal antenna combination is reduced, the efficiency for selecting the optimal antenna combination is improved, and the speed for transmitting signals to the AP by the STA is further improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks and/or flowchart block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks and/or flowchart block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (12)

1. A method for determining a transmit/receive antenna, the method comprising:
an Access Point (AP) receives an access request sent by a work Station (STA);
the AP determines a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination; the first preset condition is any one or more of the following conditions: the antenna combination with the maximum signal reception power; antenna combination with minimum frame error rate; antenna combination with minimum frame retransmission rate; antenna combinations with minimum frame dropping rate; the preset antenna combination set comprises an antenna combination set corresponding to a second optimal antenna combination, and the second optimal antenna combination is an antenna combination meeting the first preset condition in all possible antenna combinations consisting of N antennas in the M antennas; the antenna combination set corresponding to the second optimal antenna combination is determined according to the K antenna combination sets; the K antenna combination sets are obtained by dividing all possible antenna combinations according to K antenna radiation direction ranges, wherein K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M;
if the first optimal antenna combination is used by the AP to meet a second preset condition, the first optimal antenna combination is used by the AP to send signals to the STA and receive signals of the STA; the second preset condition is any one or more of the following conditions: the maximum signal received power is greater than a first threshold; the minimum frame error rate is less than a second threshold; the minimum frame retransmission rate is less than a third threshold; the minimum frame discard rate is less than a fourth threshold.
2. The method of claim 1,
and the antenna radiation direction of the antenna combination in each antenna combination set in the K antenna combination sets is positioned in the same antenna radiation direction range.
3. The method of claim 2, wherein the AP determining a training STA to access the AP comprises:
the AP receives a management frame sent by the STA;
and if the AP determines that the management frame has the training identifier, determining the STA sending the management frame as a training STA.
4. The method of claim 2, wherein the method further comprises:
and the AP enhances the radiation intensity of the antennas in the preset antenna combination set.
5. The method of any of claims 1 to 4, further comprising:
if the first optimal antenna combination does not meet the second preset condition, the AP determines a third optimal antenna combination meeting the first preset condition for the STA in antenna combinations except the preset antenna combination set;
and the AP uses the third optimal antenna combination to transmit signals to the STA and receive the signals transmitted by the STA.
6. The method of claim 5, wherein after the AP using the third optimal antenna combination to transmit signals to the STA and to receive signals transmitted by the STA, further comprising:
the AP determines an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and stores the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set;
wherein the AP determines the K antenna combination sets according to the following mode:
the AP determines all possible antenna combinations consisting of N antennas in M antennas, and determines K antenna radiation direction ranges, wherein the M antennas are antennas installed in the AP;
and the AP divides all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are positioned in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
7. An apparatus for determining a transmit/receive antenna, the apparatus comprising:
the receiving and sending unit is used for receiving an access request sent by a working Station (STA);
a determining unit, configured to determine a first optimal antenna combination in a preset antenna combination set according to the access request; the first optimal antenna combination is an antenna combination which meets a first preset condition when the AP uses the first optimal antenna combination; the first preset condition is any one or more of the following conditions: the antenna combination with the maximum signal reception power; antenna combination with minimum frame error rate; antenna combination with minimum frame retransmission rate; antenna combinations with minimum frame dropping rate; the preset antenna combination set comprises an antenna combination set corresponding to a second optimal antenna combination, and the second optimal antenna combination is an antenna combination meeting the first preset condition in all possible antenna combinations consisting of N antennas in the M antennas; the antenna combination set corresponding to the second optimal antenna combination is determined according to the K antenna combination sets; the K antenna combination sets are obtained by dividing all possible antenna combinations according to K antenna radiation direction ranges, wherein K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M;
the transceiver unit is configured to send a signal to the STA and receive a signal of the STA using the first optimal antenna combination if the first optimal antenna combination satisfies a second preset condition; the second preset condition is any one or more of the following conditions: the maximum signal received power is greater than a first threshold; the minimum frame error rate is less than a second threshold; the minimum frame retransmission rate is less than a third threshold; the minimum frame discard rate is less than a fourth threshold.
8. The apparatus of claim 7,
and the antenna radiation direction of the antenna combination in each antenna combination set in the K antenna combination sets is positioned in the same antenna radiation direction range.
9. The apparatus of claim 8,
the receiving and sending unit is specifically configured to receive a management frame sent by an STA;
the determining unit is specifically configured to determine, if it is determined that the management frame includes the training identifier, that the STA that transmits the management frame is a training STA.
10. The apparatus as recited in claim 8, wherein said transceiver unit is further configured to:
and enhancing the radiation intensity of the antennas in the preset antenna combination set.
11. The apparatus according to any of claims 8 to 10, wherein the determining unit is further configured to:
if the first optimal antenna combination does not meet the second preset condition, determining a third optimal antenna combination meeting the first preset condition for the STA in antenna combinations except the preset antenna combination set;
the transceiver unit is further configured to transmit a signal to the STA and receive a signal transmitted by the STA using the third optimal antenna combination.
12. The apparatus of claim 11, wherein the determination unit is further to:
determining an antenna combination set corresponding to the third optimal antenna combination from the K antenna combination sets, and storing the antenna combination set corresponding to the third optimal antenna combination into the preset antenna combination set;
wherein the K antenna combination sets are determined according to the following:
determining all possible antenna combinations consisting of N antennas in M antennas, and determining K antenna radiation direction ranges, wherein the M antennas are antennas installed in the device;
and dividing all possible antenna combinations into K antenna combination sets according to the K antenna radiation direction ranges, wherein the antenna radiation directions of the antenna combinations in each antenna combination set are located in the same antenna radiation direction range, K is a positive integer, N is a positive integer, M is a positive integer, and N is less than or equal to M.
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Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province

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Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province

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