CN112714393B - Method for self-adaptively locking relative position of station and wireless access point - Google Patents
Method for self-adaptively locking relative position of station and wireless access point Download PDFInfo
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- CN112714393B CN112714393B CN201910954785.9A CN201910954785A CN112714393B CN 112714393 B CN112714393 B CN 112714393B CN 201910954785 A CN201910954785 A CN 201910954785A CN 112714393 B CN112714393 B CN 112714393B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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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
- H04B7/0613—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 simultaneous transmission
- H04B7/0615—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 simultaneous transmission of weighted versions of same signal
- H04B7/0617—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 simultaneous transmission of weighted versions of same signal for beam forming
Abstract
The invention provides a method for self-adaptively locking relative positions of stations and a wireless access point, belonging to the technical field of wireless communication, wherein the method applied to the wireless access point comprises the following steps: sequentially sending scanning frames in N wave beam directions in a scanning period, wherein the scanning frames carry first time information, N is equal to 360 DEG/alpha, alpha is a coverage angle of a main lobe in N wave beams of the wireless access point, and alpha is more than 0 DEG and less than 360 DEG; determining the corresponding relation between the first time information carried in each scanning frame and the sending wave beam thereof; and determining the relative position of the station relative to the wireless access point according to the corresponding relation and the received interactive frame, and aligning the main lobe of the wireless access point to the relative position of the station. The invention judges the strength of the wireless access point signal received by the site according to the real-time negotiation rate of the site and the wireless access point through the information transmission mode of the interactive frame, so that the wireless access point can self-adaptively lock the relative position of the site.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method for self-adaptively locking relative positions of stations and a wireless access point.
Background
In the association process of the existing terminal and the wireless access points, most of the wireless access points can not realize automatic terminal locking, and few methods for locking the terminal by the wireless access points are as follows: the method comprises the steps of acquiring sample data of various family house type structures, obtaining the optimal weight values of a plurality of samples on the basis of analyzing a large amount of sample data, obtaining channel impulse response containing angle information in a ray tracing spatial filtering mode, and completing beam forming of an antenna. However, the method is not universal, is only suitable for part of family house type structures, cannot cope with any complex environment, needs to sample the environment in advance, is time-consuming and labor-consuming, and can only realize downlink (transmitting the wireless access point to the site) beam forming, and is limited in direction.
Disclosure of Invention
In view of this, the present invention provides a method for adaptively locking a relative position of a station and a wireless access point, so as to solve the problem that the current wireless access point cannot automatically lock the station.
In order to solve the above technical problem, in a first aspect, the present invention provides a method for adaptively locking a relative position of a station, where the method is applied to a wireless access point, and the method includes:
sequentially sending scanning frames in N wave beam directions in a scanning period, wherein the scanning frames carry first time information, N is equal to 360 DEG/alpha, alpha is a coverage angle of a main lobe in N wave beams of the wireless access point, and alpha is more than 0 DEG and less than 360 DEG;
determining the corresponding relation between the first time information carried in each scanning frame and the sending wave beam thereof;
and determining the relative position of the station relative to the wireless access point according to the corresponding relation and the received interactive frame, and aligning the main lobe of the wireless access point to the relative position of the station through an antenna forming algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
Optionally, the scanning frame is a beacon frame or a probe response frame sent for a probe request frame sent by the station.
Optionally, the interactive frame is any one of a data frame, an association frame, and an acknowledgement frame.
Optionally, the interactive frame carries second time information and real-time negotiation rate information;
The step of determining the relative position of the station with respect to the wireless access point according to the correspondence and the received interactive frame includes:
selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
and determining the beam direction of the target scanning frame as the relative position of the station relative to the wireless access point according to the corresponding relation between the first time information carried in the scanning frame and the sending beam thereof.
Optionally, the method further includes:
if the real-time negotiation rate in the real-time negotiation rate information carried by the interactive frame in the next communication time slot of the wireless access point and the site is lower than the previous real-time negotiation rate, sending a scanning frame in the adjacent beam direction of the target scanning frame;
and according to the corresponding relation and the received interactive frame, re-determining the relative position of the station relative to the wireless access point, and aligning the main lobe of the wireless access point to the re-determined relative position of the station through an antenna shaping algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
In a second aspect, the present invention further provides a wireless access point, including:
the scanning module is used for sequentially sending scanning frames in N wave beam directions in a scanning period, wherein the scanning frames carry first time information, N is equal to 360 degrees/alpha, alpha is a coverage angle of a main lobe in N wave beams of the wireless access point, and alpha is more than 0 degree and less than 360 degrees;
a corresponding relation determining module, configured to determine a corresponding relation between the first time information carried in each scanning frame and the transmission beam thereof;
and the locking module is used for determining the relative position of the station relative to the wireless access point according to the corresponding relation and the received interactive frame, and aligning the main lobe of the wireless access point to the relative position of the station through an antenna shaping algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
Optionally, the scanning frame is a beacon frame or a probe response frame sent for a probe request frame sent by the station.
Optionally, the interactive frame is any one of a data frame, an association frame, and an acknowledgement frame.
Optionally, the interactive frame carries second time information and real-time negotiation rate information;
The locking module includes:
the rate screening submodule is used for selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
the scanning frame screening submodule is used for determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
and the position locking submodule is used for determining the beam direction of the target scanning frame as the relative position of the station relative to the wireless access point according to the corresponding relation between the first time information carried in the scanning frame and the sending beam thereof.
Optionally, the wireless access point further includes:
a secondary scanning module, configured to send a scanning frame in a beam direction adjacent to a beam direction of the target scanning frame if a real-time negotiation rate in real-time negotiation rate information carried by the interactive frame in a next communication timeslot between the wireless access point and the station is lower than a previous real-time negotiation rate in the real-time negotiation rate information carried by the interactive frame in the next communication timeslot;
and the secondary locking module is used for re-determining the relative position of the station relative to the wireless access point according to the corresponding relation and the received interactive frame, and aligning the main lobe of the wireless access point to the re-determined relative position of the station through an antenna forming algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
In a third aspect, the present invention further provides a wireless access point, including: a transceiver and a processor;
the transceiver is configured to sequentially transmit a scanning frame in N beam directions in a scanning period, where the scanning frame carries first time information, where N is equal to 360 °/α, α is a coverage angle of a main lobe in N beams of the wireless access point, and α is greater than 0 ° < α < 360 °;
the transceiver is further used for receiving an interactive frame sent by the station in response to the scanning frame;
the processor is configured to determine a corresponding relationship between first time information carried in each scanning frame and a transmission beam thereof, determine a relative position of a station with respect to the wireless access point according to the corresponding relationship and a received interaction frame, and align a main lobe of the wireless access point to the relative position of the station through an antenna shaping algorithm, where the interaction frame is sent by the station in response to the scanning frame.
Optionally, the scanning frame is a beacon frame or a probe response frame sent for a probe request frame sent by the station.
Optionally, the interactive frame is any one of a data frame, an association frame, and an acknowledgement frame.
Optionally, the interaction frame carries second time information and real-time negotiation rate information, and the processor is further configured to:
selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
and determining the beam direction of the target scanning frame as the relative position of the station relative to the wireless access point according to the corresponding relation between the first time information carried in the scanning frame and the sending beam thereof.
Optionally, the transceiver is further configured to: if the real-time negotiation rate in the real-time negotiation rate information carried by the interactive frame in the next communication time slot of the wireless access point and the site is lower than the previous real-time negotiation rate, sending a scanning frame in the adjacent beam direction of the target scanning frame;
optionally, the processor is further configured to: and according to the corresponding relation and the received interactive frame, re-determining the relative position of the station relative to the wireless access point, and aligning the main lobe of the wireless access point to the re-determined relative position of the station through an antenna shaping algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
In a fourth aspect, the present invention also provides a wireless access point comprising a memory, a processor and a computer program stored on the memory and executable on the processor; the processor, when executing the computer program, implements any of the above methods for adaptively locking the relative position of a station.
In a fifth aspect, the present invention also provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of any of the above-mentioned methods for adaptively locking relative positions of stations.
The technical scheme of the invention has the following beneficial effects:
in the embodiment of the invention, the strength of the wireless access point signal received by the station is judged according to the real-time negotiation rate of the station and the wireless access point through the information transmission mode of the interactive frame, so that the wireless access point can self-adaptively lock the relative position of the station, thereby reducing radiation pollution and improving the anti-interference capability of the wireless access point.
Drawings
Fig. 1 is a schematic flowchart illustrating a method for adaptively locking relative positions of stations according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wireless access point according to a second embodiment of the present invention;
Fig. 3 is a schematic structural diagram of a wireless access point according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a wireless access point according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal in a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic flowchart of a method for adaptively locking a relative position of a station according to an embodiment of the present invention, where the method is applied to an Access Point (AP), and includes the following steps:
step 101: sequentially sending scanning frames in N wave beam directions in a scanning period, wherein the scanning frames carry first time information, N is equal to 360 DEG/alpha, alpha is a coverage angle of a main lobe in N wave beams of the wireless access point, and alpha is more than 0 DEG and less than 360 DEG;
Step 102: determining the corresponding relation between the first time information carried in each scanning frame and the sending wave beam thereof;
step 103: according to the corresponding relation and the received interactive frame, determining the relative position of a Station (Station, STA for short) relative to the wireless access point, and aligning the main lobe of the wireless access point to the relative position of the Station through an antenna forming algorithm, wherein the interactive frame is sent by the Station in response to the scanning frame.
According to the method for self-adaptively locking the relative position of the station, provided by the embodiment of the invention, the relative position of the station can be self-adaptively locked by the wireless access point through the information transmission mode of the interactive frame and according to the information content in the interactive frame, so that the radiation pollution is reduced, and the anti-interference capability of the wireless access point is improved.
The method for adaptively locking the relative positions of stations is exemplified below.
In an optional specific embodiment, in step 101, the wireless access point sequentially sends scanning frames in N beam directions in one scanning period, where N is 360 °/α, and α is a coverage angle of a main lobe in N beams of the wireless access point, and 0 ° < α < 360 °; the main lobe, that is, the beam with the most concentrated energy, is called a side lobe, the energy of the side lobe is far lower than the maximum energy of the main lobe, for example, the side lobe power is-20 dB (-20dB ═ 1%) of the maximum power point of the main lobe, when the main lobe coverage angle of the beam is α, it means that the wireless access point needs to scan a horizontal plane for N times at 360 ° in one scanning period, and each time corresponds to one beam direction; it can be known that, when the value of N is larger, 360 ° in the horizontal plane is subdivided into more beam directions, so that the scanning accuracy of the wireless access point is improved.
The wireless access point sends a scanning frame in each beam direction, and the scanning frame carries the first time information, so that the corresponding relation between the first time information carried in each scanning frame and the emitted beam thereof can be obtained; for example, in the beam direction of 0 to α, the wireless access point transmits a scanning frame, and the scanning frame carries the first time information t0Then the first time information t carried in the scanning frame0Corresponding to the transmitting wave beam within 0-alpha, and analogizing in turn, in the wave beam direction of alpha-2 alpha, the wireless access point transmits the next scanning frame, and the first time information carried in the scanning frame is t0+. DELTA t, the first time information t carried in the scanning frame0The positive delta t corresponds to the transmitting beam of alpha-2 alpha, so that the wireless access point can obtain the corresponding relation between the first time information carried in any scanning frame and the transmitting beam thereof, that is, the beam direction of the transmitting beam of the scanning frame can be determined according to the corresponding relation according to the first time information carried in the scanning frame.
In some embodiments of the present invention, the first time information carried in the scanning frame sent by the wireless access point in the embodiments of the present invention is represented by a timestamp field (timestamp field) of 64 bits in the scanning frame. In order to facilitate management of the correspondence, the wireless access point forms a correspondence table and stores the correspondence table therein, and by querying the correspondence table, the correspondence between the first time information carried in each scanning frame and the transmission beam thereof can be quickly found out.
In the embodiment of the present invention, the scan frame may be a beacon frame or a probe response frame sent by a station for a probe request frame, where the two different types of frames indicate two different connection modes. Specifically, if the scanning frame is a beacon frame, firstly, the wireless access point actively sends the beacon frame to the station, and at this time, if the station needs to access the wireless access point (passive connection mode), because the beacon frame carries the first time information, after receiving the beacon frame sent by the wireless access point, the station synchronously updates the self time according to the first time information in the received beacon frame, and then, the station responds to the received beacon frame and sends an interaction frame to the wireless access point; if the scanning frame is a Probe response frame (i.e., Probe response), that is, the station needs to actively access the wireless access point (i.e., active connection mode), the station first actively sends a Probe request frame (i.e., Probe request) to the wireless access point, where the Probe request frame carries information such as a pre-connection Service Set Identifier (SSID) and the like, the wireless access point sends the Probe response frame to the station in response to the received Probe request frame, and since the Probe response frame carries the first time information, after receiving the Probe response frame sent by the wireless access point, the station synchronously updates its own time according to the first time information in the received Probe response frame, and then, the station sends an interaction frame to the wireless access point in response to the received Probe response frame. Of course, if the station does not need to access the wireless access point, the station will not respond even if it receives the scan frame sent by the wireless access point.
In some optional embodiments, step 103 may specifically include:
step 1031: selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
step 1032: determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
step 1033: and determining the beam direction of the target scanning frame as the relative position of the station relative to the wireless access point according to the corresponding relation between the first time information carried in the scanning frame and the sending beam thereof.
In step 1031, the interactive frame received by the wireless access point may be any one of a Data frame (Data), an Association frame (Association), and an acknowledgement frame (ACK), where the interactive frame carries real-time negotiation rate information, and according to the real-time negotiation rate information, an interactive frame with the highest real-time negotiation rate may be selected from all the interactive frames sent by the received station, and is a target interactive frame; that is to say, in a scanning period of the wireless access point, after receiving multiple scanning frames sequentially sent by the wireless access point, the station updates its own time according to the first time information carried in the scanning frame each time the station receives the scanning frame, and then sends an interactive frame to the wireless access point in response to the scanning frame.
In the embodiment of the present invention, the interactive frame further carries second time information, where the second time information is related to the first time information, specifically, the scanning frame sent by the wireless access point to the station carries the first time information, and the station needs to process the scanning frame after receiving the scanning frame, obtain the first time information therein, and send the interactive frame to the wireless access point after updating its own time according to the first time information, so that there is a relationship of a difference delay time between the second time information carried in the interactive frame and the first time information carried in the scanning frame, the delay time is a processing time of the station, and then a corresponding relationship between the interactive frame and the scanning frame can be determined; therefore, after the wireless access point receives the interactive frame sent by the station, the second time information carried in the interactive frame can be acquired, and the scanning frame corresponding to the interactive frame can be determined according to the relationship between the second time information and the first time information. Therefore, after the target interactive frame with the highest real-time negotiation rate is selected, in step 1032, the scanning frame corresponding to the target interactive frame, that is, the target scanning frame, may be determined according to the second time information carried in the target interactive frame.
After the target scan frame is determined, in step 1033, the beam direction of the target scan frame may be determined according to the corresponding relationship between the first time information carried in the scan frame and the transmission beam thereof, for example, the wireless access point may find out the corresponding transmission beam according to the first time information carried in the target scan frame by querying the corresponding relationship table between the first time information carried in the scan frame and the transmission beam thereof, where the direction of the transmission beam is the relative position of the station with respect to the wireless access point. The relative position refers to an optimal communication position of the station with respect to the wireless access point, and is not necessarily a straight-line corresponding position between the station and the wireless access point. After the relative position of the station relative to the wireless access point is determined, the wireless access point aligns the main lobe of the wireless access point to the determined relative position through an antenna forming algorithm, so that the information transmission rate between the station and the wireless access point is the highest, and the user experience is improved. That is to say, the wireless access point updates the feed network (the network of the level and the phase required by each antenna) through the antenna shaping algorithm according to the known relative position, and realizes the real-time adaptive locking of the relative position of the station.
The beamforming algorithm can be generally divided into uplink application and downlink application according to different application occasions, and the beamforming aims to form optimal combination or distribution to baseband signals according to system performance indexes, compensate signal fading and distortion caused by factors such as space loss and multipath effect in the wireless propagation process, and reduce interference among users in the same channel. The beamforming algorithm may be considered as expressing the combination or allocation of signals as a mathematical problem, seeking an optimal solution thereof. The beamforming algorithm used in the embodiment of the present invention is a conventional technical means in the art, and any algorithm that can achieve the relative position of the transmission beam main lobe of the wireless access point to the station may be applied to the embodiment of the present invention.
After the relative position of the station with respect to the wireless access point is determined for the first time, since the position of the station may move, in order to achieve better adaptive locking of the relative position of the station by the wireless access point, the method for adaptively locking the relative position of the station in the embodiment of the present invention further includes:
step 104: if the real-time negotiation rate in the real-time negotiation rate information carried by the interactive frame in the next communication time slot of the wireless access point and the site is lower than the previous real-time negotiation rate, sending a scanning frame in the adjacent beam direction of the target scanning frame;
Step 105: and according to the corresponding relation and the received interactive frame, re-determining the relative position of the station relative to the wireless access point, and aligning the main lobe of the wireless access point to the re-determined relative position of the station through an antenna shaping algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
That is, if the real-time negotiation rate in the real-time negotiation rate information carried in the interactive frame in the communication timeslot of the next wireless access point and the station is lower than the previous one, and at this time, the information transmission rate between the wireless access point and the station is reduced, the wireless access point determines that the relative position of the station with respect to the wireless access point has changed, so that the wireless access point sends out a scanning frame in the adjacent beam direction of the target scanning frame, the scanning frame also carries the first time information, and the first time information of the scanning frame also has a corresponding relationship with the sending beam thereof; after receiving a scanning frame sent by a wireless access point, a station updates self time by using first time information carried again by the scanning frame, responds to the scanning frame, and sends an interactive frame to the wireless access point, wherein the interactive frame also carries second time information and real-time negotiation rate information, and the wireless access point re-determines the relative position of the station relative to the wireless access point according to the second time information and the real-time negotiation rate information, wherein the specific determination process is the same as the above-mentioned process, and is not described again. After the relative position of the station is re-determined, the wireless access point adjusts its main lobe to align with the re-determined relative position direction so that the information transmission rate between the station and the wireless access point is again restored to the highest level. Of course, as long as the real-time negotiation rate in the real-time negotiation rate information carried in the interactive frame in the communication time slot of the next wireless access point and the station is lower than the real-time negotiation rate in the previous time, the wireless access point can utilize the method to perform adaptive locking and tracking on the station.
In the embodiment of the invention, the strength of the wireless access point signal received by the station is judged according to the real-time negotiation rate of the station and the wireless access point through the information transmission mode of the interactive frame, so that the response speed of the wireless access point is accelerated, the relative position of the station can be adaptively locked, the radiation energy is concentrated, the radiation pollution is reduced, and the anti-interference capability of the wireless access point is improved; in addition, the method for self-adaptively locking the relative positions of the stations has universality, does not need to sample the environment in advance, and can cope with any complex environment; in addition, the wireless access point in the embodiment of the invention has high spatial degree of freedom, can simultaneously carry out beam forming on receiving (downlink) and transmitting (uplink), can accurately control the transmitting direction, and greatly reduces the interference and radiation to the surrounding environment; furthermore, the wireless access point in the embodiment of the invention has high coverage capability, and the time-sharing locking of uplink and downlink can be realized by switching the transceiving switch, so that the coverage capability of the wireless access point is greatly improved.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a wireless access point according to a second embodiment of the present invention, where the wireless access point according to the second embodiment of the present invention includes:
A scanning module 21, configured to send a scanning frame in N beam directions in sequence in a scanning period, where the scanning frame carries first time information, where N is equal to 360 °/α, α is a coverage angle of a main lobe in N beams of the wireless access point, and α is greater than 0 ° < 360 °;
a corresponding relation determining module 22, configured to determine a corresponding relation between the first time information carried in each scanning frame and the transmission beam thereof;
a locking module 23, configured to determine a relative position of a station with respect to the wireless access point according to the correspondence and a received interaction frame, and align a main lobe of the wireless access point with the relative position of the station through an antenna shaping algorithm, where the interaction frame is sent by the station in response to the scan frame.
In the embodiment of the invention, the wireless access point sequentially sends the scanning frames to the plurality of beam directions in the scanning period, then receives the interactive frames sent by the station response, and adaptively locks the relative position of the station according to the information content in the interactive frames, so that the wireless access point reduces the radiation pollution to the surrounding environment and improves the anti-interference capability of the wireless access point.
Optionally, the scanning frame is a beacon frame or a probe response frame sent for a probe request frame sent by the station.
Optionally, the interactive frame is any one of a data frame, an association frame, and an acknowledgement frame.
Optionally, the interactive frame carries second time information and real-time negotiation rate information;
the locking module 23 includes:
the rate screening submodule is used for selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
the scanning frame screening submodule is used for determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
and the position locking submodule is used for determining the beam direction of the target scanning frame as the relative position of the station relative to the wireless access point according to the corresponding relation between the first time information carried in the scanning frame and the sending beam thereof.
Optionally, the wireless access point further includes:
a secondary scanning module, configured to send a scanning frame in a beam direction adjacent to a beam direction of the target scanning frame if a real-time negotiation rate in real-time negotiation rate information carried by the interactive frame in a next communication timeslot between the wireless access point and the station is lower than a previous real-time negotiation rate in the real-time negotiation rate information carried by the interactive frame in the next communication timeslot;
And the secondary locking module is used for re-determining the relative position of the station relative to the wireless access point according to the corresponding relation and the received interactive frame, and aligning the main lobe of the wireless access point to the re-determined relative position of the station through an antenna forming algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
The embodiments of the present invention provide technical solutions corresponding to the above embodiments and having the same inventive concept, and can achieve the same technical effects.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a wireless access point according to a third embodiment of the present invention, where the wireless access point 30 includes: a transceiver 31 and a processor 32, wherein:
a transceiver 31, configured to sequentially send a scan frame in N beam directions in a scan period, where the scan frame carries first time information, where N is equal to 360 °/α, α is a coverage angle of a main lobe in N beams of the wireless access point, and α is greater than 0 ° < α < 360 °;
the transceiver 31 is further configured to receive an interactive frame sent by the station in response to the scan frame;
The processor 32 is configured to determine a corresponding relationship between the first time information carried in each scanning frame and a transmission beam thereof, determine a relative position of the station with respect to the wireless access point 30 according to the corresponding relationship and the received interaction frame, and align a main lobe of the wireless access point 30 to the relative position of the station through an antenna forming algorithm, where the interaction frame is sent by the station in response to the scanning frame.
Optionally, the scanning frame is a beacon frame or a probe response frame sent for a probe request frame sent by the station.
Optionally, the interactive frame is any one of a data frame, an association frame, and an acknowledgement frame.
Optionally, the interaction frame carries second time information and real-time negotiation rate information, and the processor 32 is further configured to:
selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
and determining the beam direction of the target scanning frame as the relative position of the station with respect to the wireless access point 30 according to the corresponding relationship between the first time information carried in the scanning frame and the transmission beam thereof.
Optionally, the transceiver 31 is further configured to: if the real-time negotiation rate in the real-time negotiation rate information carried by the interactive frame in the next communication time slot between the wireless access point 30 and the station is lower than the previous real-time negotiation rate, sending a scanning frame in a beam direction adjacent to the beam direction of the target scanning frame;
optionally, the processor 32 is further configured to: and according to the corresponding relationship and the received interactive frame, re-determining the relative position of the station with respect to the wireless access point 30, and aligning the main lobe of the wireless access point 30 to the re-determined relative position of the station through an antenna shaping algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
The embodiment of the present invention is a product embodiment corresponding to the above method embodiment, and therefore, detailed description is omitted here, and please refer to the first embodiment in detail.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a wireless access point according to a fourth embodiment of the present invention, where the wireless access point 40 includes: a memory 42, a processor 41 and a computer program stored on the memory 42 and executable on the processor; the processor 41, when executing the computer program, implements the steps of:
Sequentially sending scanning frames in N wave beam directions in a scanning period, wherein the scanning frames carry first time information, N is equal to 360 DEG/alpha, alpha is a coverage angle of a main lobe in N wave beams of the wireless access point 40, and alpha is greater than 0 DEG and less than 360 DEG;
determining the corresponding relation between the first time information carried in each scanning frame and the sending wave beam thereof;
and determining the relative position of the station relative to the wireless access point 40 according to the corresponding relationship and the received interactive frame, and aligning the main lobe of the wireless access point 40 to the relative position of the station through an antenna forming algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
In the embodiment of the invention, the wireless access point can self-adaptively lock the relative position of the station according to the information content in the interactive frame by the information transmission mode of the interactive frame, thereby reducing radiation pollution and improving the anti-interference capability of the wireless access point.
Optionally, the scanning frame is a beacon frame or a probe response frame sent for a probe request frame sent by the station.
Optionally, the interactive frame is any one of a data frame, an association frame, and an acknowledgement frame.
Optionally, the processor 41 may further implement the following steps when executing the computer program:
the interactive frame carries second time information and real-time negotiation rate information;
the step of determining the relative position of the station with respect to the wireless access point 40 according to the correspondence and the received interactive frame includes:
selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
and determining the beam direction of the target scanning frame as the relative position of the station with respect to the wireless access point 40 according to the corresponding relationship between the first time information carried in the scanning frame and the transmission beam thereof.
Optionally, the transceiver 42 is further configured to:
if the real-time negotiation rate in the real-time negotiation rate information carried by the interactive frame in the next communication time slot between the wireless access point 40 and the station is lower than the previous real-time negotiation rate, sending a scanning frame in the adjacent beam direction of the target scanning frame;
optionally, the processor 41 may further implement the following steps when executing the computer program:
And according to the corresponding relation and the received interactive frame, re-determining the relative position of the station relative to the wireless access point 40, and aligning the main lobe of the wireless access point 40 to the re-determined relative position of the station through an antenna shaping algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
The embodiment of the present invention is a product embodiment corresponding to the above method embodiment, and therefore, details are not repeated here, and please refer to the above embodiment one.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a terminal according to a fifth embodiment of the present invention, where the terminal 50 includes a transceiver 51 and a processor 52, where:
a transceiver 51, configured to receive a scanning frame that is sequentially sent by a wireless access point in N beam directions in a scanning period, where the scanning frame carries first time information, where N is equal to 360 °/α, α is a coverage angle of a main lobe in N beams of the wireless access point, and α is greater than 0 ° < α < 360 °;
the transceiver 51 is further configured to send an interactive frame in response to the scan frame, where the interactive frame is any one of a data frame, an association frame, and an acknowledgement frame, and the interactive frame carries second time information and real-time negotiation rate information;
A transceiver 51, further configured to actively send a probe request frame to the wireless access point;
the processor 52 is configured to update its own time according to the first time information carried in the received scanning frame, where the scanning frame is a beacon frame sent by the wireless access point or a probe response frame sent by the wireless access point in response to the probe request frame.
In the embodiment of the present invention, the terminal 50 may update its own time according to the first time information carried in the received scanning frame, and send the interactive frame to the wireless access point in response to the scanning frame, so that the wireless access point can determine the relative position of the terminal 50 with respect to the wireless access point according to the received interactive frame and the corresponding relationship between the first time information in the scanning frame sent by the wireless access point and the sending beam, thereby enabling the terminal 50 to realize the communication with the wireless access point at the fastest transmission rate.
A sixth embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the method for adaptively locking relative positions of stations in the first embodiment. Please refer to the above description of the method steps in the corresponding embodiments.
The network side device in the embodiment of the present invention may be a Base station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), may also be a Base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), may also be an evolved Node B (evolved Node B, eNB or eNodeB) in LTE, or a relay station or an Access point, or a Base station in a future 5G network, and the like, and is not limited herein.
The terminal in the embodiments of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber station (Subscriber site), a Mobile station (Mobile), a Remote station (Remote site), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a Terminal (User Device or User Equipment), which are not limited herein.
The computer-readable storage media described above, including non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.
Claims (10)
1. A method for adaptively locking relative positions of stations, applied to a wireless access point, comprising:
sequentially sending scanning frames in N wave beam directions in a scanning period, wherein the scanning frames carry first time information, N is equal to 360 DEG/alpha, alpha is a coverage angle of a main lobe in N wave beams of the wireless access point, and alpha is larger than 0 DEG and smaller than 360 DEG;
determining the corresponding relation between the first time information carried in each scanning frame and the sending wave beam thereof;
and determining the relative position of the station relative to the wireless access point according to the corresponding relation and the received interactive frame, aligning the main lobe of the wireless access point to the relative position of the station through an antenna forming algorithm, wherein the interactive frame is sent to the wireless access point in response to the scanning frame after the station updates the self time according to the first time information carried in the scanning frame when receiving the scanning frame each time.
2. The method according to claim 1, wherein the scanning frame is a beacon frame or a probe response frame sent for a probe request frame sent by the station.
3. The method of claim 1, wherein the interactive frame is any one of a data frame, an association frame, and an acknowledgement frame.
4. The method according to claim 1, wherein the interactive frame carries second time information and real-time negotiation rate information;
the step of determining the relative position of the station with respect to the wireless access point according to the correspondence and the received interactive frame includes:
selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
and determining the beam direction of the target scanning frame as the relative position of the station relative to the wireless access point according to the corresponding relation between the first time information carried in the scanning frame and the sending beam thereof.
5. The method of adaptively locking relative positions of stations as in claim 4, further comprising:
if the real-time negotiation rate in the real-time negotiation rate information carried by the interactive frame in the next communication time slot of the wireless access point and the site is lower than the previous real-time negotiation rate, sending a scanning frame in the adjacent beam direction of the target scanning frame;
And according to the corresponding relation and the received interactive frame, re-determining the relative position of the station relative to the wireless access point, and aligning the main lobe of the wireless access point to the re-determined relative position of the station through an antenna shaping algorithm, wherein the interactive frame is sent by the station in response to the scanning frame.
6. A wireless access point, comprising:
the scanning module is used for sequentially sending scanning frames in N wave beam directions in a scanning period, wherein the scanning frames carry first time information, N is equal to 360 degrees/alpha, alpha is a coverage angle of a main lobe in N wave beams of the wireless access point, and alpha is more than 0 degree and less than 360 degrees;
a corresponding relation determining module, configured to determine a corresponding relation between the first time information carried in each scanning frame and the transmission beam thereof;
and the locking module is used for determining the relative position of the station relative to the wireless access point according to the corresponding relation and the received interactive frame, and aligning the main lobe of the wireless access point to the relative position of the station through an antenna shaping algorithm, wherein the interactive frame is sent to the wireless access point by updating the time of the station according to the first time information carried in the scanning frame when the station receives the scanning frame each time, and responding to the scanning frame.
7. The wireless access point of claim 6,
the interactive frame carries second time information and real-time negotiation rate information;
the locking module includes:
the rate screening submodule is used for selecting a target interactive frame with the highest real-time negotiation rate according to the received real-time negotiation rate information carried in all interactive frames sent by the site;
the scanning frame screening submodule is used for determining a corresponding target scanning frame according to second time information carried in the target interactive frame;
and the position locking submodule is used for determining the beam direction of the target scanning frame as the relative position of the station relative to the wireless access point according to the corresponding relation between the first time information carried in the scanning frame and the sending beam thereof.
8. A wireless access point, comprising: a transceiver and a processor;
the transceiver is configured to sequentially transmit a scanning frame in N beam directions in a scanning period, where the scanning frame carries first time information, where N is equal to 360 °/α, α is a coverage angle of a main lobe in N beams of the wireless access point, and α is greater than 0 ° < α < 360 °;
The transceiver is further used for receiving an interactive frame sent by the station in response to the scanning frame;
the processor is configured to determine a corresponding relationship between first time information carried in each scanning frame and a transmission beam thereof, determine a relative position of a station with respect to the wireless access point according to the corresponding relationship and a received interaction frame, and align a main lobe of the wireless access point to the relative position of the station through an antenna shaping algorithm, where the interaction frame is sent to the wireless access point in response to the scanning frame after the station updates its own time according to the first time information carried in the scanning frame each time the station receives the scanning frame.
9. A wireless access point comprising a memory, a processor and a computer program stored on the memory and executable on the processor; a method for adaptively locking relative positions of stations according to any one of claims 1 to 5, when the computer program is executed by the processor.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for adaptively locking a relative position of a station as claimed in any one of claims 1 to 5.
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