CN106162816B - Network discovery method, station and access point - Google Patents

Abstract

Embodiments of the present invention provide a network discovery method, a station and an access point. The network discovery method of the present invention includes: a station broadcasts and sends a network detection request message; the station receives a network detection response message sent by multiple APs on respective sub-channels corresponding to the multiple APs at the same time, and the network detection response message is A response message sent by the multiple APs after receiving the network detection request message. The embodiments of the present invention can reduce resource waste caused by channel competition and improve channel transmission efficiency.

Description

Network discovery method, station and access point

technical field

The embodiments of the present invention relate to communication technologies, and in particular to a network discovery method, a station and an access point.

Background technique

In a wireless local area network (Wireless Local Area Network, WLAN for short), a station (Sation, SAT for short) needs to perform network discovery to determine an access point (Access Point, AP for short) to be accessed by the station before accessing the network.

In the current wireless fidelity (Wireless Fidelity, WIFI for short) standard such as the IEEE 802.11 standard, two network discovery methods are defined for a station. The site can passively discover networks according to the passive network discovery method, or actively discover networks according to one of the active network discovery methods. In the passive network discovery method, the station only needs to receive a beacon (Beacon) message discovered by surrounding APs, and determine network information around the station according to the beacon message. In the active network message, the station can send a network detection request message to at least one AP in the area where the station is located, and after receiving the network detection request message, the at least one AP can use a channel competition mechanism on a channel By sending the network detection response message to the station in time division, the station then determines the network information around the station according to the network detection response message.

However, in a dense AP deployment scenario, since there are many APs in the area where the site is located, the multiple APs need to send network detection response messages on one channel in time division through channel competition. However, channel competition among multiple APs may cause waste of channel resources, resulting in low channel transmission efficiency.

Contents of the invention

Embodiments of the present invention provide a network discovery method, a station, and an access point to solve the problem of low channel transmission efficiency in the network discovery process.

In the first aspect, an embodiment of the present invention provides a network discovery method, which is characterized in that it includes:

The station broadcasts and sends a network detection request message;

The station receives network detection response messages sent by multiple APs on respective sub-channels corresponding to the multiple APs at the same time, and the network detection response message is a response sent by the AP after receiving the network detection request message information.

According to the first aspect, in the first possible implementation manner of the first aspect, before the station receives the network probe response messages sent by multiple APs on the corresponding sub-channels of the multiple APs at the same time, the method Also includes:

The station sends a trigger message to the multiple APs;

Correspondingly, the network detection response message sent by the station on the respective sub-channels corresponding to the multiple APs while receiving multiple APs includes:

The station receives the network probe response messages sent by the plurality of APs on respective sub-channels corresponding to each of the plurality of APs after receiving the trigger message.

According to the first possible implementation manner of the first aspect, in the second possible implementation manner, the station sending a trigger message to the multiple APs includes:

The station sends the trigger message to the plurality of APs within a first delay time after sending the network detection request message; the first delay time is greater than or equal to each AP in the plurality of APs responding to the The maximum delay time for network probe request messages.

According to the first possible implementation manner of the first aspect, in the third possible implementation manner, the network detection request message includes: indication information of the second delay time; the indication information of the second delay time is used After instructing the plurality of APs to receive the trigger message sent by the station after the second delay time after receiving the network probe request message;

Correspondingly, the station sends trigger messages to the multiple APs, including:

The station sends the trigger message to the multiple APs within the second delay time after sending the network detection request message.

According to any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner, the network detection request message further includes: channel indication information; the channel indication information is used to and instructing the multiple APs to determine respective subchannels corresponding to the multiple APs according to the channel indication information.

According to the fourth possible implementation manner of the first aspect, in the fifth possible implementation manner, the network detection request message further includes: channel division rules and channel selection rules; or,

The trigger message further includes: the channel division rule and the channel selection rule;

The channel division rule is used to make the plurality of APs perform channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station; the channel selection rule is used to make the multiple The AP determines from the at least one subchannel according to the channel selection rule the subchannels corresponding to the multiple APs.

In a second aspect, an embodiment of the present invention provides a network discovery method, including:

The access point AP receives the network detection request message sent by the station;

The AP sends a network probe response message to the station on the sub-channel corresponding to the AP while other APs send a network probe response message to the station on the sub-channel corresponding to the other AP; the other The AP is any AP other than the AP among the multiple APs in the area where the station is located.

According to the second aspect, in the first possible implementation manner of the second aspect, when other APs send a network probe response message to the station on the sub-channel corresponding to the other AP, the Before sending the network probe response message to the station on the subchannel corresponding to the AP, the method further includes:

The AP receives the trigger message sent by the station.

According to the first possible implementation manner of the second aspect, in the second possible implementation manner, the AP receiving the trigger message sent by the station includes:

The AP receives the trigger message sent by the station within a first delay time after receiving the network detection request message; the first delay time is greater than or equal to the plurality of APs responding to the network detection request The maximum delay time for messages.

According to the first possible implementation manner of the second aspect, in the fourth possible implementation manner of the third aspect, the network detection request message includes: indication information of the second delay time;

Before the AP receives the trigger message sent by the station, the method further includes:

The AP determines the second delay time according to the indication information of the second delay time;

Correspondingly, the AP receiving the trigger message sent by the station includes:

The AP receives the trigger message sent by the station within the second delay time after receiving the network detection request message.

According to any one of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner, the network detection request message further includes: channel indication information;

The AP sends a network probe response message to the station on the sub-channel corresponding to the AP while other APs send the network probe response message to the station on the sub-channel corresponding to the AP, the Methods also include:

The AP determines the subchannel corresponding to the AP according to the channel indication information.

According to the fourth possible implementation manner of the second aspect, in the fifth possible implementation manner, the network detection request message further includes: channel division rules and channel selection rules; or,

The trigger message further includes: the channel division rule and the channel selection rule;

Before the AP determines the subchannel corresponding to the AP according to the channel indication information, the method further includes:

The AP performs channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station;

The AP determining the subchannel corresponding to the AP according to the channel indication information includes:

The AP determines the subchannel corresponding to the AP from the at least one subchannel according to the channel indication information and the channel selection rule.

In a third aspect, an embodiment of the present invention provides a site, including:

A sending module, configured to broadcast and send a network detection request message;

A receiving module, configured to receive a network detection response message sent by multiple APs on respective sub-channels corresponding to the multiple APs at the same time, the network detection response message being that the multiple APs receive the network detection request message Response message sent later.

According to the third aspect, in the first possible implementation manner of the third aspect, the sending module is further configured to, when the receiving module receives the multiple APs Sending a trigger message to the multiple APs before the network probe response message sent on the network;

The receiving module is further configured to receive the network probe response messages sent by the plurality of APs on respective sub-channels corresponding to each of the plurality of APs after receiving the trigger message.

According to the first possible implementation manner of the third aspect, in the second possible implementation manner, the sending module is further configured to, after the first delay time after sending the network detection request message, send A number of APs send the trigger message; the first delay time is greater than or equal to a maximum delay time for each AP in the plurality of APs to respond to the network detection request message.

According to the first possible implementation manner of the third aspect, in the third possible implementation manner, the network detection request message includes: indication information of the second delay time; the indication information of the second delay time is used After instructing the plurality of APs to receive the trigger message sent by the station after the second delay time after receiving the network probe request message;

The sending module is further configured to send the trigger message to the plurality of APs within the second delay time after sending the network detection request message.

According to any one of the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner, the network detection request message further includes: channel indication information; Instructing the multiple APs to determine the sub-channels corresponding to the multiple APs according to the channel indication information.

According to the fourth possible implementation manner of the third aspect, in the fifth possible implementation manner, the network detection request message further includes: channel division rules and channel selection rules; or,

The trigger message further includes: the channel division rule and the channel selection rule;

The channel division rule is used to make the plurality of APs perform channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station; the channel selection rule is used to make the multiple The AP determines from the at least one subchannel according to the channel selection rule the subchannels corresponding to the multiple APs.

In a fourth aspect, an embodiment of the present invention provides an access point AP, including:

A receiving module, configured to receive a network detection request message sent by a site;

A sending module, configured to send a network probe response message to the station on the sub-channel corresponding to the AP while other APs send a network probe response message to the station on the sub-channel corresponding to the other AP; The other AP is any AP other than the AP among the multiple APs in the area where the station is located.

According to the fourth aspect, in the first possible implementation manner of the fourth aspect,

The receiving module is further configured to, when the sending module sends the network probe response message to the station on the subchannel corresponding to the other AP, on the subchannel corresponding to the AP Before sending the network probe response message to the station, receive the trigger message sent by the station.

According to the first possible implementation manner of the fourth aspect, in the second possible implementation manner, the receiving module is further configured to receive the The trigger message sent by the station; the first delay time is greater than or equal to a maximum delay time for the plurality of APs to respond to the network detection request message.

According to the first possible implementation manner of the fourth aspect, in a third possible implementation manner, the network detection request message includes: indication information of the second delay time;

The AP also includes:

A first determining module, configured to determine the second delay time according to the indication information of the second delay time before the receiving module receives the trigger message sent by the station;

Correspondingly, the receiving module is further configured to receive the trigger message sent by the station within the second delay time after receiving the network detection request message.

According to any one of the first to third possible implementation manners of the fourth aspect, in a fourth possible implementation manner, the network detection request message further includes: channel indication information;

The AP also includes:

The second determining module is configured to, when the sending module sends the network probe response message to the station on the subchannel corresponding to the other AP, on the subchannel corresponding to the AP Before sending the network probe response message to the station, determine the subchannel corresponding to the AP according to the channel indication information.

According to the fourth possible implementation manner of the fourth aspect, in the fifth possible implementation manner, the network detection request message further includes: channel division rules and channel selection rules; or,

The trigger message further includes: the channel division rule and the channel selection rule;

The AP also includes:

A partitioning module, configured to perform channel partitioning on a preset channel according to the channel partitioning rule to obtain at least one channel corresponding to the station before the second determining module determines the subchannel corresponding to the AP according to the channel indication information. sub-channel;

The second determination module is further configured to determine the subchannel corresponding to the AP from the at least one subchannel according to the channel indication information and the channel selection rule.

An embodiment of the present invention provides a network discovery method, a station, and an access point, which broadcast a network detection request message through a station, and receive network detection response messages sent by the multiple APs simultaneously on the respective sub-channels corresponding to the multiple APs , the network detection response message is a response message sent by the AP after receiving the network detection request message, so that the multiple APs do not need to perform channel competition, reduce resource waste caused by channel competition, and improve channel transmission efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a flowchart of a network discovery method provided by Embodiment 1 of the present invention;

FIG. 2 is a flowchart of a network discovery method provided in Embodiment 2 of the present invention;

FIG. 3 is a flowchart of a network discovery method provided in Embodiment 3 of the present invention;

FIG. 4 is a flowchart of a network discovery method provided in Embodiment 4 of the present invention;

FIG. 5 is a schematic structural diagram of a site provided by Embodiment 5 of the present invention;

FIG. 6 is a schematic structural diagram of an AP provided in Embodiment 6 of the present invention;

FIG. 7 is a schematic structural diagram of a site provided by Embodiment 7 of the present invention;

FIG. 8 is a schematic structural diagram of an AP provided in Embodiment 8 of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Each embodiment of the present invention is applicable to the situation where a station performs network discovery in a dense AP deployment scenario. Among them, the station (Station, referred to as STA), can also be called a user, and can be a wireless sensor, a wireless communication terminal or a mobile terminal, such as a mobile phone (or called a "cellular" phone) supporting a WiFi communication function and a mobile phone with a wireless communication function. computer. For example, it may be a portable, pocket, handheld, computer built-in, wearable, or vehicle-mounted wireless communication device that supports WiFi communication functions, and they exchange communication data such as voice and data with the wireless access network. An access point (AP for short), which may also be referred to as a wireless access point or a bridge or a hotspot, may access a server or a communication network. Those skilled in the art know that some communication devices may simultaneously have the functions of the above access point or station, which is not limited here.

Embodiment one

FIG. 1 is a flowchart of a network discovery method provided by Embodiment 1 of the present invention. This method is executed by the site. As shown in Figure 1, the method may include:

S101. The station broadcasts and sends a network detection request message.

Optionally, since the scenarios applicable to various solutions in the embodiments of the present invention are dense AP deployment scenarios, that is, there are multiple APs in the area where the station is located in the dense AP deployment scenario. The station may send the network detection request message to all APs in the area where the station is located, or may send the network detection request message to some APs in the area where the station is located. The station can obtain the channel use opportunity corresponding to the station through channel competition with other stations in the station, and then send the network detection request message to all nearby APs working on the channel by broadcasting on the channel corresponding to the station . The network probe request message may be, for example, a probe request message.

S102. The station receives network detection response messages sent by multiple APs on their respective sub-channels at the same time, and the network detection response message is a response message sent by the multiple APs after receiving the network detection request message .

Optionally, the network detection response message may be a response message that the multiple APs respond to and determine after receiving the network detection request message sent by the station. The subchannels corresponding to the multiple APs may be the determined subchannels corresponding to the multiple APs. The multiple APs may, for example, select respective sub-channels corresponding to the multiple APs according to preset channel division rules and preset channel selection rules. The preset channel division rules and the preset channel selection rules may be information configured in advance by the multiple APs on the side of the multiple APs and the upper-layer network equipment of the site, or the site or the site Obtained from the information sent by the upper layer network device. Wherein, subchannels corresponding to different APs among the multiple APs may be different. Wherein, the network probe response message may be, for example, a probe response message.

At the same time, the multiple APs send the network probe response message on the corresponding sub-channels of the multiple APs at the same time, which can reduce the error caused by different APs in the multiple APs competing to send the network probe response message on the entire channel. The waste of channel resources and the delay of response messages improve the efficiency of network transmission.

The network probe response message received by the station is sent by the multiple APs on the sub-channels corresponding to the multiple APs, that is to say, the multiple APs have their own corresponding sub-channels, therefore, the multiple APs There is no need to perform channel competition to obtain a channel for sending signals, thereby reducing resource waste caused by channel competition. Wherein, the network probe response message received by the station may be sent by the plurality of APs in the manner of Orthogonal Frequency Division Multiple Access (OFDMA) on the respective subchannels corresponding to the plurality of APs. of.

In the network discovery method provided by Embodiment 1 of the present invention, a station broadcasts and sends a network detection request message, and receives network detection response messages sent by the plurality of APs on respective sub-channels corresponding to the plurality of APs at the same time, and the network detection response message is The multiple APs send response messages after receiving the network detection request message, so that the multiple APs do not need to perform channel competition, reduce resource waste caused by channel competition, and improve channel transmission efficiency.

It should be noted that after the station receives the network probe response messages sent by the multiple APs, it can obtain the wireless local area network information corresponding to the multiple APs according to the network probe response messages sent by the multiple APs, and then according to the The network information of the plurality of APs selects an AP as an AP to be accessed for the station, and accesses the station to a wireless local area network corresponding to the AP to be accessed through the AP to be accessed.

Embodiment two

Embodiment 2 of the present invention also provides a network discovery method. FIG. 2 is a flowchart of a network discovery method provided by Embodiment 2 of the present invention. As shown in FIG. 2, in the network discovery method of the second embodiment, before the station receives the network detection response messages sent by multiple APs on the corresponding sub-channels of the multiple APs at the same time in S102 of the first embodiment, the Methods can include:

S201. The station sends a trigger message to the multiple APs.

The trigger message may be used to instruct the multiple APs to perform channel differences from the station according to the channel synchronization information carried in the trigger message. The channel synchronization between the AP and the station mentioned here specifically includes that the AP performs time synchronization and/or frequency synchronization according to the channel synchronization information carried in the received message sent by the station. The channel synchronization information includes but is not limited to the message sent by the station. One or more of time information, short training sequence, long training sequence, pilot sequence, etc.

The station may obtain a channel corresponding to the station by competing with other stations in the station for a channel, and then send the trigger message to the multiple APs on the channel corresponding to the station. In order to ensure that the multiple APs can know that the trigger message is sent by the station corresponding to the network detection request message after receiving the trigger message, the trigger message may also include: The same identifying information as the site's identifying information.

The station may simultaneously broadcast the trigger message to the multiple APs. The trigger message may be, for example, a trigger message. The station sends the trigger message to the plurality of APs, so that the plurality of APs can perform channel synchronization with the station according to the channel synchronization information carried in the trigger message, so as to ensure that the subchannels corresponding to the plurality of APs and the station receive The time and frequency of the sub-channels are consistent.

Correspondingly, in S102, the station receives the network probe response messages sent by multiple APs on the corresponding sub-channels of the multiple APs at the same time, including:

S202. The station receives the network probe response message sent by the plurality of APs on respective sub-channels corresponding to each of the plurality of APs after receiving the trigger message.

Optionally, the station in S201 above sends a trigger message to the multiple APs, which may include:

The station sends the trigger message to the plurality of APs within a preset first delay time after sending the network detection request message; the first delay time is greater than or equal to the time for each AP in the plurality of APs to respond to the network detection request message Maximum delay time.

Optionally, the station sends the trigger message to multiple APs within the first delay time after sending the network probe request message, so as to ensure that the multiple APs have enough delay time after receiving the network probe request message to Obtain the wireless local area network information corresponding to the multiple APs in response to the network detection request message, and then determine the network detection response message. It should be noted that, for the case where the first delay time is preset, the station needs to carry response indication information in the network detection request message, which is used to instruct the AP to respond to the network detection request message in the response mode corresponding to the response indication information, such as OFDMA , that is, the network probe response message is sent in an OFDMA manner.

The first delay time may be statically configured in advance at the site and the multiple APs.

Alternatively, the network detection request message may include: indication information of a second delay time; the indication information of the second delay time is used to indicate that the second delay time of the plurality of APs after receiving the network detection request message After a delay time, the trigger message sent by the station is received.

That is to say, the second delay time may be obtained by the multiple APs according to the indication information of the delay time dynamically determined by the station according to the actual situation and sent to the multiple APs through the network detection request message.

Correspondingly, in the above S201, the station sends trigger messages to the multiple APs, which may include:

The station sends the trigger message to the multiple APs within the second delay time after sending the network detection request message.

The station sends the second delay time to the plurality of APs, which can make the plurality of APs reserve enough channel resources according to the second delay time to receive the trigger sent by the station after receiving the network detection request message. information. It should be noted that, for the case where the second delay time is carried in the network detection request message, the response indication information may also be carried by setting the second delay time as a special value. If the second delay time is "1", the second delay indication information may instruct the station to instruct the station to send the trigger message to the AP within the second delay time after sending the network detection request message, and at the same time instruct the AP to use The response indicates the response mode corresponding to the information, for example, the OFDMA mode responds to the network detection request message, that is, the network detection response message is sent in the OFDMA mode. If the second delay indication information is "0", the second delay indication information may indicate to the AP that the station does not send a trigger message, and the AP may respond to the network detection request message in a channel contention manner, that is, send a network detection response message.

Optionally, the network detection request message may further include: channel indication information; the channel indication information is used to instruct the multiple APs to determine the subchannels corresponding to the multiple APs according to the channel indication information.

Specifically, the channel indication information may be represented by a preset binary number. The channel indication information of different APs among the multiple APs may be represented by different binary numbers. If the preset binary bit is a binary bit, and the binary number corresponding to the channel indication information of an AP is "1", then the AP determines the sub-channel corresponding to the AP, and then on the sub-channel corresponding to the AP Send the network probe response message to the station. Correspondingly, if the value of the binary bit in the channel indication information is "0", the AP may send the network probe response message to the station in time division through channel competition. It should be noted that the channel indication information may be represented by other numerical values of one binary bit, or may be represented by a preset multi-bit binary numerical value, which will not be repeated here.

Optionally, the network detection request message further includes: channel division rules and channel selection rules.

Alternatively, the trigger message further includes: the channel division rule and the channel selection rule.

That is to say, the channel division rule and the channel selection rule may be sent by the station to the multiple APs through the network detection request message, or sent to the multiple APs through the trigger message, for example. The channel division rule and the channel selection rule may also be sent by the station through other messages, which will not be repeated here.

Wherein, the channel division rule is used to enable the multiple APs to perform channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station.

Specifically, the channel division rule may be, for example, an Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple, OFDM for short) channel division rule. If the channel division rule is an OFDM channel division rule, and the preset channel is a channel corresponding to the system bandwidth, then the plurality of APs may divide the system bandwidth in an OFDM manner to obtain at least one sub-channel. The multiple APs may, for example, divide multiple subcarriers in the system bandwidth according to the channel division rule to obtain at least one carrier group, each carrier group includes at least one subcarrier, and each carrier group may be a subcarrier channel. For example, if the system bandwidth is 256 subcarriers in a 20 MHz channel, every 16 subcarriers form a carrier group, and 16 carrier groups, that is, 16 subchannels, can be obtained.

Wherein, the channel selection rule is used to enable the multiple APs to determine the sub-channel corresponding to the multiple APs from the at least one sub-channel according to the channel selection rule.

Specifically, the channel selection rule may be, for example, a preset algorithm, such as a hash algorithm. After receiving the channel selection rule, the plurality of APs may carry out haha according to their own Basic Service Set Identifier (BSSID for short) or medium access control address (medium access control, MAC for short) respectively. A hash value is calculated, and according to the hash value, the sequence numbers of the sub-channels corresponding to the multiple APs are determined, and then the sub-channels corresponding to the multiple APs are selected. If the multiple APs obtain 16 sub-channels after performing channel division, the hash value can be any value from 1 to 16.

It should be noted that the channel division rule and the channel selection rule sent by the station to different APs among the multiple APs are the same.

In the network discovery method provided by Embodiment 2 of the present invention, on the basis of the method in Embodiment 1 above, the station sends the trigger message to the multiple APs, so that the multiple APs and the station perform channel synchronization, reducing the number of The receiving channel of the network detection response message sent by different APs among the multiple APs to the station is delayed, so as to improve the efficiency of network transmission. At the same time, by sending the delay time to the multiple APs, the multiple APs reserve channel resources according to the delay time to receive the trigger message sent by the station, ensuring accurate reception of the trigger message, thereby ensuring that the different APs are The channels for sending the network detection response message on the respective corresponding sub-channels are synchronized to improve network transmission efficiency. Moreover, in Embodiment 2 of the present invention, the station configures the channel division rule and the channel selection rule for the multiple APs, so as to ensure the accuracy of the subchannels corresponding to the multiple APs selected by the multiple APs.

Embodiment Three

Embodiment 3 of the present invention also provides a network discovery method. The method can be executed by any one of multiple APs in the area where the station is located. FIG. 3 is a flowchart of a network discovery method provided by Embodiment 3 of the present invention. As shown in Figure 3, the method may include:

S301. The AP receives a network detection request message sent by a station.

S302. The AP sends a network probe response message to the station on the sub-channel corresponding to the AP while other APs send a network probe response message to the station on the sub-channel corresponding to the other AP, wherein the other AP is Any AP other than this AP among the multiple APs in the area where the site is located.

The method in this embodiment of the present invention is a method executed by an AP corresponding to the method in Embodiment 1 or Embodiment 2 above, and its beneficial effects are similar to those in the above embodiment, so details are not repeated here.

When the AP in S302 above sends a network probe response message to the station on the subchannel corresponding to the other AP, before sending the network probe response message to the station on the subchannel corresponding to the AP, the method also include:

The AP receives the trigger message sent by the station.

Optionally, the AP in S302 sends a network probe response message to the station on the sub-channel corresponding to the AP while other APs send a network probe response message to the station on the sub-channel corresponding to the other AP, including:

After the AP performs channel synchronization with the station according to the trigger message, while the other AP sends a network detection response message to the station on the subchannel corresponding to the other AP, it sends a network detection response message to the station on the subchannel corresponding to the AP. The site sends a network probe response message.

It should be noted that, the trigger message itself may be used as channel synchronization information, so that the AP performs channel different from the station according to the trigger message. The trigger message may also carry channel synchronization information, so that the AP performs channel different from the station according to the channel synchronization information carried in the trigger message.

Optionally, the AP receiving the trigger message sent by the station may include:

The AP receives the trigger message sent by the station within a first delay time after receiving the network detection request message, and the first delay time is greater than or equal to a maximum delay time for the plurality of APs to respond to the network detection request message.

Optionally, the network detection request message includes: indication information of the second delay time.

Before the AP receives the trigger message sent by the station in the steps of the above solution, the method may further include:

The AP determines the second delay time according to the indication information of the second delay time.

Correspondingly, the AP receiving the trigger message sent by the station may include:

The AP receives the trigger message sent by the station within the second delay time after receiving the network detection request message.

Optionally, the network detection request message further includes: channel indication information.

In the above S302, the AP sends a network probe response message to the station on the sub-channel corresponding to the AP while other APs send the network probe response message to the station on the sub-channel corresponding to the other AP, and before sending the network probe response message to the station on the sub-channel corresponding to the AP, the Methods may also include:

The AP determines the subchannel corresponding to the AP according to the channel indication information.

Optionally, the network detection request message may further include: channel division rules and channel selection rules. or,

The trigger message also includes: the channel division rule and the channel selection rule.

Before the AP determines the subchannel corresponding to the AP according to the channel indication information in the above steps, the method may further include:

The AP performs channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station.

Optionally, the AP determining the subchannel corresponding to the AP according to the channel indication information may include:

The AP determines the subchannel corresponding to the AP from the at least one subchannel according to the channel indication information and the channel selection rule.

The method in this embodiment of the present invention is a method executed by an AP corresponding to the method in Embodiment 1 or Embodiment 2 above, and its beneficial effects are similar to those in the above embodiment, so details are not repeated here.

Embodiment four

Embodiment 4 of the present invention also provides a network discovery method. The fourth embodiment specifically illustrates the method of any one of the above-mentioned embodiments one or three through an example. FIG. 4 is a flowchart of a network discovery method provided by Embodiment 4 of the present invention. As shown in Figure 4, the method may include:

S401. The station broadcasts and sends a network detection request message, where the network detection request message includes: delay time, channel division rules, channel selection rules, and channel indication information.

The station may perform channel competition with other stations to determine the channel of the station, and then broadcast and send the network detection request message to multiple APs in the area where the station is located. The delay time may be a preset experience value, and the experience value may be greater than or equal to the maximum delay time for the plurality of APs to respond to the network detection request message sent by the station.

S402. The station sends a trigger message to multiple APs within the delay time after sending the network detection request message.

S403. The multiple APs receive the network detection request message sent by the station.

S404. The multiple APs reserve channel resources according to the delay time, and receive the trigger message sent by the station within the delay time after receiving the network detection request message.

In order to ensure that the APs accurately determine the network detection request message and the trigger message, the network detection request message and the trigger message may include the identifier of the station.

S405. The multiple APs perform channel synchronization with the station according to the trigger information.

S406. The multiple APs perform channel division on a preset channel according to the channel division rule to obtain at least one sub-channel of the station.

The channel division rule may be, for example, the OFDM channel division rule.

The multiple APs may, for example, divide the multiple subcarriers of the preset bandwidth into multiple carrier groups according to the channel division rule, where each carrier group includes at least one subcarrier. Each carrier group corresponds to a subchannel.

S407. The multiple APs select subchannels respectively corresponding to the multiple APs from the at least one subchannel according to the channel selection rule and the channel indication information.

The channel indication information may be represented by a preset bit value of 1. The multiple APs may determine that the value of the preset bit is binary 1 after receiving the channel indication information, and then use a hash algorithm to determine a hash according to the respective BSSID or MAC addresses of the multiple APs. value, and determine the serial number of the carrier group according to the hash value, and then determine the carrier group as the subchannel corresponding to each of the plurality of APs.

S408. The multiple APs simultaneously send the network probe response message to the station on subchannels corresponding to the multiple APs.

After receiving the network detection response message sent by the multiple APs, the station can discover the network according to the network information in the network detection response message and then determine the AP to be connected to the station, and connect to the network through the AP to be connected. into the network.

It should be noted that the channel division rule and the channel selection rule may also be sent to the multiple APs through other information, such as the trigger message, and are not limited to be sent through the network detection request message. If the channel division rule and the channel selection rule pass other information, such as the trigger message is sent to the multiple APs, the specific implementation scheme is similar to that in Embodiment 2 above, and will not be repeated here.

The network discovery method provided by Embodiment 4 of the present invention specifically describes the method in any one of Embodiments 1 and 3 by using an example, and its beneficial effect is similar to that of the above embodiment, so it will not be repeated here.

Embodiment five

Embodiment 5 of the present invention also provides a site. The station may execute the network discovery method in any one of the foregoing first or second embodiments. FIG. 5 is a schematic structural diagram of a site provided by Embodiment 5 of the present invention. As shown in FIG. 5 , the station 500 may include: a sending module 501 and a receiving module 502 .

Wherein, the sending module 501 is used for broadcasting and sending the network detection request message.

The receiving module 502 is configured to receive network detection response messages sent by multiple APs on their corresponding subchannels at the same time, where the network detection response messages are sent by the multiple APs after receiving the network detection request message Respond to the message.

Optionally, the sending module 501 is further configured to send a trigger message to the multiple APs before the receiving module 502 receives the network probe response messages sent by the multiple APs on their corresponding sub-channels.

The receiving module 502 is specifically configured to receive the network probe response messages sent by the multiple APs on the corresponding sub-channels of the multiple APs after receiving the trigger message.

Optionally, the sending module 501 is further configured to send the trigger message to the plurality of APs within a first delay time after sending the network detection request message; the first delay time is greater than or equal to each AP in the plurality of APs The maximum delay time for responding to the network probe request message.

Optionally, the network detection request message includes: indication information of a second delay time; the indication information of the second delay time is used to indicate the second delay time of the plurality of APs after receiving the network detection request message After that, the trigger message sent by the station is received.

The sending module 501 is further configured to send the trigger message to the multiple APs within the second delay time after sending the network detection request message.

Optionally, the network detection request message further includes: channel indication information; the channel indication information is used to instruct the multiple APs to determine the corresponding sub-channels of the multiple APs according to the channel indication information.

Optionally, the network detection request message also includes: channel division rules and channel selection rules; or,

The trigger message also includes: the channel division rule and the channel selection rule.

The channel division rule is used to enable the plurality of APs to perform channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station; the channel selection rule is used to enable the plurality of APs to perform channel division according to the channel selection rule Determine subchannels corresponding to the multiple APs from the at least one subchannel.

The site provided in Embodiment 5 of the present invention can execute the network discovery method in any one of Embodiment 1 or Embodiment 2 above, and its beneficial effect is similar to that in Embodiment 1 or Embodiment 2 above, and will not be repeated here.

Embodiment six

Embodiment 6 of the present invention provides an access point AP. The AP can execute the network discovery method described in the third embodiment above. FIG. 6 is a schematic structural diagram of an AP provided in Embodiment 6 of the present invention. As shown in Figure 6, the AP 600 may include:

The receiving module 601 is configured to receive a network detection request message sent by a station.

The sending module 602 is configured to send a network probe response message to the station on the subchannel corresponding to the AP while other APs send the network probe response message to the station on the subchannel corresponding to the other AP; the other AP is Any AP other than this AP among the multiple APs in the area where the site is located.

Optionally, the receiving module 601 is further configured to send the network probe response message to the station on the subchannel corresponding to the AP while the sending module 602 sends the network probe response message to the station on the subchannel corresponding to the other AP. Before sending the network probe response message, the station receives the trigger message sent by the station.

Optionally, the receiving module 601 is further configured to receive the trigger message sent by the station within a first delay time after receiving the network detection request message; the first delay time is greater than or equal to the plurality of APs responding to the network The maximum delay time for probe request messages.

Optionally, the network detection request message includes: indication information of the second delay time.

AP 600 also includes:

The first determining module is configured to determine the second delay time according to the indication information of the second delay time before the receiving module 601 receives the trigger message sent by the station.

Correspondingly, the receiving module 601 is further configured to receive the trigger message sent by the station within the second delay time after receiving the network detection request message.

Optionally, the network detection request message further includes: channel indication information.

AP 600 also includes:

The second determining module is configured to send the network probe to the station on the subchannel corresponding to the AP while the other AP sends the network probe response message to the station on the subchannel corresponding to the other AP in the sending module 602 Before responding to the message, the subchannel corresponding to the AP is determined according to the channel indication information.

Optionally, the network detection request message also includes: channel division rules and channel selection rules; or,

The trigger message also includes: the channel division rule and the channel selection rule.

The AP 600 also includes:

A partitioning module, configured to perform channel partitioning on a preset channel according to the channel partitioning rule to obtain at least one subchannel corresponding to the station before the second determining module determines the subchannel corresponding to the AP according to the channel indication information.

The second determination module is further configured to determine the sub-channel corresponding to the AP from the at least one sub-channel according to the channel indication information and the channel selection rule.

The AP provided in the sixth embodiment of the present invention can execute the network discovery method in the third embodiment above, and its beneficial effects are similar to those in the above embodiment, and will not be repeated here.

Embodiment seven

Embodiment 7 of the present invention also provides a site. The station in the seventh embodiment may execute the network discovery method described in the first or second embodiment above. FIG. 7 is a schematic structural diagram of a site provided by Embodiment 7 of the present invention. As shown in FIG. 7 , the station 700 may include: a receiver 701 , a processor 702 and a transmitter 703 .

Wherein, the transmitter 703 is configured to broadcast and send the network detection request message.

The receiver 701 is configured to receive network detection response messages sent by multiple APs on their corresponding subchannels at the same time, where the network detection response messages are sent by the multiple APs after receiving the network detection request message Respond to the message.

Optionally, the transmitter 703 is further configured to send a trigger message to the multiple APs before the receiver 701 station receives the network probe response messages sent by the multiple APs on the respective sub-channels corresponding to the multiple APs.

The receiver 701 is specifically configured to receive the network probe response messages sent by the multiple APs on respective sub-channels corresponding to the multiple APs after receiving the trigger message.

The transmitter 703 is further configured to send the trigger message to the plurality of APs within a first delay time after sending the network detection request message; the first delay time is greater than or equal to each AP in the plurality of APs responding to the network detection request The maximum delay time for messages.

Optionally, the network detection request message includes: indication information of a second delay time; the indication information of the second delay time is used to indicate the second delay time of the plurality of APs after receiving the network detection request message After that, the trigger message sent by the station is received.

Correspondingly, the transmitter 703 is further configured to send a trigger message to the multiple APs within the second delay time after sending the network detection request message.

Optionally, the network detection request message further includes: channel indication information; the channel indication information is used to instruct the multiple APs to determine the corresponding sub-channels of the multiple APs according to the channel indication information.

Optionally, the network detection request message also includes: channel division rules and channel selection rules; or,

The trigger message also includes: the channel division rule and the channel selection rule.

The channel division rule is used to enable the plurality of APs to perform channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station; the channel selection rule is used to enable the plurality of APs to perform channel division according to the channel selection rule Determine subchannels corresponding to the multiple APs from the at least one subchannel.

The station provided by Embodiment 7 of the present invention can execute the network discovery method of Embodiment 1 or Embodiment 2, and its beneficial effect is similar to that of the above embodiment, so it will not be repeated here.

Embodiment eight

Embodiment 8 of the present invention also provides an AP. The AP can execute the network discovery method in the third embodiment above. FIG. 8 is a schematic structural diagram of an AP provided in Embodiment 8 of the present invention. As shown in FIG. 8 , the AP 800 may include: a receiver 801 , a processor 802 and a transmitter 803 .

Optionally, the receiver 801 is configured to receive a network detection request message sent by the station.

The transmitter 803 is configured to send a network probe response message to the station on the subchannel corresponding to the AP while other APs send the network probe response message to the station on the subchannel corresponding to the other AP; the other AP is the Any AP other than this AP among the multiple APs in the area where the site is located.

Optionally, the receiver 801 is also used for the transmitter 803 to send a network probe response message to the station on the subchannel corresponding to the AP while the AP sends a network probe response message to the station on the subchannel corresponding to the other AP. Before sending the network probe response message, receive the trigger message sent by the station.

Optionally, the receiver 801 is also configured to receive the trigger message sent by the station within a first delay time after receiving the network probe request message; the first delay time is greater than or equal to the plurality of APs responding to the network probe The maximum delay time for request messages.

Optionally, the network detection request message includes: indication information of the second delay time.

The processor 802 is further configured to determine the second delay time according to the indication information of the second delay time before the receiver 801 receives the trigger message sent by the station.

Correspondingly, the receiver 801 is further configured to receive the trigger message sent by the station within the second delay time after receiving the network detection request message.

Optionally, the network detection request message further includes: channel indication information.

The processor 802 is further configured to send the network probe response message to the station on the sub-channel corresponding to the AP while the other AP sends the network probe response message to the station on the sub-channel corresponding to the other AP, According to the channel indication information, the sub-channel corresponding to the AP is determined.

Optionally, the network detection request message further includes: channel division rules and channel selection rules. or,

The trigger message also includes: the channel division rule and the channel selection rule;

The processor 802 is further configured to, before determining the subchannel corresponding to the AP according to the channel indication information, perform channel division on a preset channel according to the channel division rule to obtain at least one subchannel corresponding to the station, and according to the channel indication information and The channel selection rule determines the subchannel corresponding to the AP from the at least one subchannel.

The AP provided in the eighth embodiment of the present invention can execute the network discovery method in the third embodiment above, and its beneficial effects are similar to those in the above embodiment, and will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (20)

1. A method for network discovery, comprising:

a site broadcasts and sends a network detection request message;

the station sends a trigger message to a plurality of APs; the trigger message is used for indicating the plurality of APs to perform channel synchronization with the station respectively according to the channel synchronization information carried by the trigger message;

and the station receives a network detection response message which is simultaneously sent on the sub-channels corresponding to the plurality of APs after the plurality of APs receive the trigger message, wherein the network detection response message is a response message sent by the plurality of APs after receiving the network detection request message.

2. The method of claim 1, wherein the station sends a trigger message to the plurality of APs, comprising:

the station sends the trigger message to the plurality of APs at a first delay time after sending the network detection request message; the first delay time is greater than or equal to a maximum delay time for each of the plurality of APs to respond to the network probe request message.

3. The method of claim 1, wherein the network probe request message comprises: indication information of a second delay time; the indication information of the second delay time is used to indicate that the plurality of APs receive the trigger message sent by the station after receiving the second delay time after receiving the network probe request message;

correspondingly, the sending, by the station, a trigger message to the plurality of APs includes:

and the station sends the trigger message to the plurality of APs at the second delay time after sending the network detection request message.

4. The method according to any of claims 1-3, wherein the network probe request message further comprises: channel indication information; the channel indication information is used for indicating the plurality of APs to determine the sub-channels corresponding to the plurality of APs according to the channel indication information.

5. The method of claim 4, wherein the network probe request message further comprises: channel division rules and channel selection rules; or,

the trigger message further includes: the channel division rule and the channel selection rule;

the channel division rule is used for enabling the plurality of APs to carry out channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station; the channel selection rule is used for enabling the plurality of APs to determine the sub-channel corresponding to each of the plurality of APs from the at least one sub-channel according to the channel selection rule.

6. A method for network discovery, comprising:

an Access Point (AP) receives a network detection request message sent by a station;

the AP receives a trigger message sent by the station; the trigger message is used for indicating the AP to perform channel synchronization with the station respectively according to the channel synchronization information carried by the trigger message;

the AP sends a network detection response message to the station on a sub-channel corresponding to the AP while other APs send the network detection response message to the station on sub-channels corresponding to the other APs; the other APs are any AP out of the APs in the area where the station is located.

7. The method of claim 6, wherein the AP receiving the trigger message sent by the station comprises:

the AP receives the trigger message sent by the station at a first delay time after receiving the network detection request message; the first delay time is greater than or equal to a maximum delay time for the plurality of APs to respond to the network probe request message.

8. The method of claim 6, wherein the network probe request message comprises: indication information of a second delay time;

before the AP receives the trigger message sent by the station, the method further includes:

the AP determines the second delay time according to the indication information of the second delay time;

correspondingly, the receiving, by the AP, the trigger message sent by the station includes:

and the AP receives the trigger message sent by the station at the second delay time after receiving the network detection request message.

9. The method according to any of claims 6-8, wherein the network probe request message further comprises: channel indication information;

the AP sends a network probe response message to the station on a sub-channel corresponding to the other AP, and before sending the network probe response message to the station on the sub-channel corresponding to the AP, the method further includes:

and the AP determines a sub-channel corresponding to the AP according to the channel indication information.

10. The method of claim 9, wherein the network probe request message further comprises: channel division rules and channel selection rules; or,

the trigger message further includes: the channel division rule and the channel selection rule;

before the AP determines the sub-channel corresponding to the AP according to the channel indication information, the method further includes:

the AP carries out channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station;

the determining, by the AP, the sub-channel corresponding to the AP according to the channel indication information includes:

and the AP determines a sub-channel corresponding to the AP from the at least one sub-channel according to the channel indication information and the channel selection rule.

11. A station, comprising:

the sending module is used for broadcasting and sending the network detection request message;

a receiving module, configured to receive a network probe response message sent by multiple APs on respective sub-channels corresponding to the multiple APs at the same time, where the network probe response message is a response message sent by the multiple APs after receiving the network probe request message;

the sending module is further configured to send a trigger message to the plurality of APs before the receiving module receives the network probe response message sent by the plurality of APs on the respective sub-channels corresponding to the plurality of APs at the same time; the trigger message is used for indicating the plurality of APs to perform channel synchronization with the station respectively according to the channel synchronization information carried by the trigger message;

the receiving module is further configured to receive the network probe response message sent by the plurality of APs on the respective sub-channels corresponding to the plurality of APs at the same time after the plurality of APs receive the trigger message.

12. The station of claim 11,

the sending module is further configured to send the trigger message to the plurality of APs at a first delay time after the network probe request message is sent; the first delay time is greater than or equal to a maximum delay time for each of the plurality of APs to respond to the network probe request message.

13. The station of claim 11, wherein the network probe request message comprises: indication information of a second delay time; the indication information of the second delay time is used to indicate that the plurality of APs receive the trigger message sent by the station after receiving the second delay time after receiving the network probe request message;

the sending module is further configured to send the trigger message to the plurality of APs at the second delay time after the network probe request message is sent.

14. A station according to any of claims 11 to 13, wherein the network probe request message further comprises: channel indication information; the channel indication information is used for indicating the plurality of APs to determine the sub-channels corresponding to the plurality of APs according to the channel indication information.

15. The station of claim 14, wherein the network probe request message further comprises: channel division rules and channel selection rules; or,

the trigger message further includes: the channel division rule and the channel selection rule;

the channel division rule is used for enabling the plurality of APs to carry out channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station; the channel selection rule is used for enabling the plurality of APs to determine the sub-channel corresponding to each of the plurality of APs from the at least one sub-channel according to the channel selection rule.

16. An access point, AP, comprising:

the receiving module is used for receiving a network detection request message sent by a site;

a sending module, configured to send a network probe response message to the station on a sub-channel corresponding to the AP while sending the network probe response message to the station on a sub-channel corresponding to the other AP by another AP; the other AP is any one of a plurality of APs in the area of the site except the AP;

the receiving module is further configured to receive a trigger message sent by the station before the sending module sends the network probe response message to the station on the sub-channel corresponding to the other AP while the other AP sends the network probe response message to the station on the sub-channel corresponding to the AP; the trigger message is used for indicating the AP to perform channel synchronization with the station respectively according to the channel synchronization information carried by the trigger message.

17. The AP of claim 16,

the receiving module is further configured to receive the trigger message sent by the station at a first delay time after the network probe request message is received; the first delay time is greater than or equal to a maximum delay time for the plurality of APs to respond to the network probe request message.

18. The AP of claim 16, wherein the network probe request message comprises: indication information of a second delay time;

the AP further comprises:

a first determining module, configured to determine the second delay time according to the indication information of the second delay time before the receiving module receives the trigger message sent by the station;

correspondingly, the receiving module is further configured to receive the trigger message sent by the station at the second delay time after the network probing request message is received.

19. The AP of any of claims 16-18, wherein the network probe request message further comprises: channel indication information;

the AP further comprises:

a second determining module, configured to determine, according to the channel indication information, a sub-channel corresponding to the AP before the sending module sends the network probe response message to the station on the sub-channel corresponding to the other AP and simultaneously sends the network probe response message to the station on the sub-channel corresponding to the AP.

20. The AP of claim 19,

the network probe request message further comprises: channel division rules and channel selection rules; or,

the trigger message further includes: the channel division rule and the channel selection rule;

the AP further comprises:

a dividing module, configured to perform channel division on a preset channel according to the channel division rule to obtain at least one sub-channel corresponding to the station before the second determining module determines the sub-channel corresponding to the AP according to the channel indication information;

the second determining module is further configured to determine a sub-channel corresponding to the AP from the at least one sub-channel according to the channel indication information and the channel selection rule.