WO2021017634A1

WO2021017634A1 - Ssid acquisition method and apparatus for wi-fi access point, device and system

Info

Publication number: WO2021017634A1
Application number: PCT/CN2020/094322
Authority: WO
Inventors: 肖月振
Original assignee: 阿里巴巴集团控股有限公司
Priority date: 2018-11-26
Filing date: 2020-06-04
Publication date: 2021-02-04
Also published as: CN111225429A; CN111225430A; CN111225429B; TW202106072A

Abstract

The embodiments of the present invention provide an SSID acquisition method and apparatus for a Wi-Fi access point, a device and a system. Said method comprises: a device to access a network receiving a beacon frame sent by a router, the beacon frame comprising an SSID and a BSSID of the router; storing a correlation between the SSID and the BSSID; receiving a network configuration synchronization frame sent by a network configuration device, the network configuration synchronization frame comprising the BSSID of the router; and querying the correlation according to the BSSID in the network configuration synchronization frame to acquire the SSID. Thus, even if a plurality of bytes corresponding to the SSID are lost in a transmission process when sequentially sending a plurality of bytes of the SSID and PASSWD on the basis of a conventional network configuration scheme, the SSID can be correctly acquired on the basis of the present scheme, thereby avoiding a network configuration failure problem caused by the fact that the SSID cannot be acquired, improving the success rate of the network configuration.

Description

Method, device, equipment and system for obtaining SSID of Wi-Fi access point

This application claims the priority of the Chinese patent application filed on July 30, 2019, with the application number 201910695885.4 and the invention title "Router SSID acquisition method, device, equipment and system", the entire content of which is incorporated into this application by reference .

Technical field

The present invention relates to the field of communication technology, and in particular to a method, device, equipment and system for acquiring the SSID of a Wi-Fi access point.

Background technique

Today's smart devices are mostly in the WiFi category, such as smart sockets, smart air conditioners, and smart air purifiers. In order to ensure the normal use of these smart devices, it is first necessary to connect these smart devices to the network. Due to the popularity of home WiFi networks, WiFi networks are currently commonly used to connect with routers (also called access points), and then interact with mobile phones/clouds.

However, because these smart devices do not have a human-computer interaction interface, and do not have a configuration interface that can be displayed on computers and mobile phones, search, select designated routers, and enter connection passwords, so they cannot complete network configuration autonomously. Therefore, smart devices must be resolved first. Problem connecting the router correctly.

Summary of the invention

The embodiment of the present invention provides a method, device, equipment and system for acquiring the SSID of a Wi-Fi access point, so as to improve the success rate of network configuration.

In the first aspect, an embodiment of the present invention provides a method for obtaining an SSID of a router, which is applied to a device to be connected to the network, and the method includes:

Receiving a beacon frame sent by a router, where the beacon frame includes the SSID and BSSID of the router;

Store the correspondence between the SSID and the BSSID;

Receiving a distribution network synchronization frame sent by a distribution network device, where the distribution network synchronization frame includes the BSSID of the router;

Query the correspondence relationship according to the BSSID in the distribution network synchronization frame to obtain the SSID.

In the second aspect, an embodiment of the present invention provides a router SSID acquisition device, which is applied to a device to be connected to the network, and includes:

A receiving module, configured to receive a beacon frame sent by a router, where the beacon frame includes the SSID and BSSID of the router;

A storage module for storing the correspondence between the SSID and the BSSID;

The receiving module is further configured to receive a distribution network synchronization frame sent by a network distribution device, where the distribution network synchronization frame includes the BSSID of the router;

The obtaining module is configured to query the correspondence relationship according to the BSSID in the distribution network synchronization frame to obtain the SSID.

In a third aspect, an embodiment of the present invention provides an electronic device that includes a first processor and a first memory, the first memory is configured to store one or more computer instructions, wherein the one or more When the computer instructions are executed by the first processor, the method for obtaining the SSID of the router in the first aspect is implemented.

The embodiment of the present invention provides a computer storage medium for storing a computer program that enables a computer to implement the SSID acquisition method of the router in the first aspect described above when the computer program is executed.

In a fourth aspect, an embodiment of the present invention provides a method for obtaining an SSID of a router, which is applied to a network distribution device, and the method includes:

Establish a communication connection with the router;

Send a distribution network synchronization frame, the distribution network synchronization frame includes the BSSID of the router, so that the device to be connected to the network that has received the distribution network synchronization frame determines that the BSSID is stored locally, according to the locally stored BSSID The corresponding relationship between the BSSID and the SSID is used to obtain the SSID.

In the fifth aspect, an embodiment of the present invention provides a router SSID obtaining device, which is applied to a network distribution device, and includes:

The connection module is used to establish a communication connection with the router;

The sending module is configured to send a distribution network synchronization frame, which includes the BSSID of the router, so that the device to be connected to the network that receives the distribution network synchronization frame determines that the BSSID is stored locally, Obtain the SSID according to the correspondence between the BSSID and the SSID stored locally.

In a sixth aspect, an embodiment of the present invention provides an electronic device that includes a second processor and a second memory, the second memory is used to store one or more computer instructions, wherein the one or more When the computer instructions are executed by the second processor, the method for obtaining the SSID of the router in the fourth aspect is implemented.

The embodiment of the present invention provides a computer storage medium for storing a computer program that enables a computer to implement the SSID acquisition method of the router in the fourth aspect when executed by a computer.

In a seventh aspect, an embodiment of the present invention provides a router SSID acquisition system, including:

Network distribution equipment, routers and equipment to be connected to the network;

The router is configured to send a beacon frame, and the beacon frame includes the SSID and BSSID of the router;

The network distribution device is configured to send a distribution network synchronization frame, and the distribution network synchronization frame includes the BSSID of the router;

The device to be connected to the network is configured to store the correspondence between the SSID and the BSSID according to the received beacon frame, and to query the correspondence according to the BSSID in the distribution network synchronization frame to Obtain the SSID.

In an eighth aspect, an embodiment of the present invention provides a method for obtaining a service set identifier, which is applied to a device to be connected to the network, and includes:

Receiving a first message sent by a network access device, where the first message includes first channel information and a first service set identifier;

Acquiring a beacon frame according to the first channel information, the beacon frame including a second service set identifier and a second basic service set identifier;

Determine a target service set identifier according to the first service set identifier and the second service set identifier.

In the embodiment of the present invention, the network name of the WiFi network corresponding to the router can be represented by the Service Set Identifier (SSID), and the address information of the router can be represented by the Basic Service Set Identifier (BSSID). Said. In a wireless local area network, the BSSID is the Media Access Control (MAC) address of the wireless router, and the SSID is the network name of the wireless network. In the embodiment of the present invention, the SSID of the router refers to the network name of the WiFi network corresponding to the router.

In the embodiment of the present invention, network distribution equipment such as mobile phones can be connected to the router in advance, that is, the network distribution equipment has been connected to the network, such as smart home appliances waiting to be connected to the network, the equipment is not connected to the network. , The device to be connected to the network needs to obtain the SSID of the router, that is, the network name of the WiFi network that the mobile phone is connected to. Of course, the device to be connected to the network also needs to obtain information such as the network access password (PASSWD), but the information such as PASSWD can be used in traditional ways obtain. In the solution of the present invention, the device to be connected to the network may also be the device to be configured. The network devices to be distributed can be smart home devices (such as commonly used white appliances, small household appliances, lighting, etc. that need to be connected to the Internet), access points, various sensor devices, and so on. For obtaining the SSID of the router, on the one hand, the router can continuously broadcast and send out beacon frames at a certain time interval. The beacon frame includes its own SSID and BSSID, so that the device to be connected to the network that receives the beacon frame parses the beacon Frames are used to store the correspondence between SSID and BSSID. On the other hand, when the network configuration equipment is to be connected to the network device, it can broadcast the distribution network synchronization frame. The distribution network synchronization frame includes the router that the network equipment accesses. The BSSID. Based on this, after the network access device receives the distribution network synchronization frame, it queries the locally stored corresponding relationships according to the BSSID contained therein. If the corresponding relationship corresponding to the BSSID is stored locally, it directly obtains the corresponding relationship of the BSSID according to the corresponding relationship. The SSID is sufficient. Therefore, even if the multiple bytes corresponding to the SSID are lost during the transmission process during the sequential transmission of multiple bytes of SSID and PASSWD based on the traditional network configuration scheme, the SSID can be obtained correctly based on this scheme. Avoid the problem of network configuration failure caused by the inability to obtain the SSID, thereby improving the success rate of network configuration.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a schematic diagram of the composition of a router SSID obtaining system provided by an embodiment of the present invention;

FIG. 2 is a flowchart of a method for obtaining an SSID of a router according to an embodiment of the present invention;

FIG. 3 is a flowchart of another method for obtaining an SSID of a router according to an embodiment of the present invention;

Figure 4 is an interaction diagram of a network distribution process provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a device for acquiring an SSID of a router according to an embodiment of the present invention;

6 is a schematic structural diagram of an electronic device corresponding to the SSID obtaining apparatus of the router provided in the embodiment shown in FIG. 5;

FIG. 7 is a schematic structural diagram of another device for obtaining SSID of a router according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an electronic device corresponding to the SSID obtaining device of the router provided in the embodiment shown in FIG. 7;

FIG. 9 is a flowchart of a method for acquiring a service set identifier according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, "multiple" Generally, at least two are included, but the inclusion of at least one is not excluded.

It should be understood that the term "and/or" used in this article is only an association relationship describing associated objects, which means that there can be three relationships. For example, A and/or B can mean that there is A alone, and both A and B, there are three cases of B alone. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

Depending on the context, the words "if" and "if" as used herein can be interpreted as "when" or "when" or "in response to determination" or "in response to detection". Similarly, depending on the context, the phrase "if determined" or "if detected (statement or event)" can be interpreted as "when determined" or "in response to determination" or "when detected (statement or event) )" or "in response to detection (statement or event)".

It should also be noted that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a commodity or system that includes a series of elements not only includes those elements, but also includes those elements that are not explicitly listed. Other elements of, or also include elements inherent to this commodity or system. If there are no more restrictions, the element defined by the sentence "includes a..." does not exclude the existence of other identical elements in the commodity or system that includes the element.

In addition, the sequence of steps in the following method embodiments is only an example, and is not strictly limited.

Before introducing the network configuration solution provided by the embodiment of the present invention, the problem of network configuration failure that is likely to be caused in the traditional process of using the SmartConfig mode for network configuration will be explained.

First of all, under a typical network distribution system consisting of network distribution equipment, routers, and equipment to be connected to the network, the network distribution equipment can be, for example, a mobile phone, and the equipment to be connected to the network can be, for example, smart home appliances. The network distribution equipment has established a connection with the router. That is, the distribution network equipment has been connected to the WiFi network, and the distribution network equipment needs to configure the network of the equipment to be connected as an information island, which will include the network name of the router (SSID), the access password (PASSWD), and some auxiliary information (such as SSID length, PASSWD) The network distribution information such as the length, CRC, Flag, etc.) is transmitted to the device to be connected to the network, so that the device to be connected to the network accesses the router based on the network distribution information, that is, to access the WiFi network.

At present, the SmartConfig mode mainly uses the Length field of 802.11 and 802.2 or the destination MAC address (Destination) field to transmit these distribution network information. Taking the length field to transmit the distribution network information, it is limited by the number of bits (12 bits) that the Length field can carry. After the distribution network equipment encodes the distribution network information, the number of bits obtained after encoding is far It is much higher than the number of bits that the Length field can carry. Therefore, in order to complete the complete transmission of the distribution network information, the distribution network device needs to send several distribution network data frames, and each distribution network data frame contains a Length field. In fact, the 12 bits of the Length field are often not fully used for the transmission of network distribution information. For description purposes, it is assumed that only 8 bits, namely one byte, can be transmitted at a time. Assuming that the length of both SSID and PASSWD is 12 bytes, and the length of auxiliary information is 6 bytes, then at least 30 distribution network data frames need to be sent to complete the transmission of the distribution network information.

However, if any one of these 30 bytes is lost during transmission, the device to be connected to the network will not be able to correctly parse the router's SSID and PASSWD, thus failing to connect to the network and network configuration failure. Since the probability of each byte being lost is roughly the same, in theory, the longer the length of the SSID and PASSWD in the same time, the higher the probability of error, and the lower the probability of correctly parsing the router's SSID and PASSWD.

Based on this, if the SSID can be automatically filled, it is equivalent to not transmitting the SSID, which can effectively reduce the actual transmission length, thereby increasing the success rate of the distribution network. Therefore, the embodiment of the present invention provides a solution for automatically obtaining the SSID of the router, which can effectively reduce the number of bytes to be transmitted during the network configuration process (if the SSID and PASSWD have the same length, the auxiliary information is not considered, which is equivalent to the bytes to be transmitted. The length is reduced to 50% of the original length), thereby improving the efficiency and success rate of the distribution network.

The following describes the scheme for automatically obtaining the SSID of the router provided by the embodiments of the present invention in conjunction with the following embodiments.

FIG. 1 is a schematic diagram of the composition of a system for obtaining an SSID of a router according to an embodiment of the present invention. As shown in FIG. 1, the system may include: a network distribution device, a router, and a device to be connected to the network.

Router, used to send beacon frames, the beacon frame includes the router's SSID and BSSID.

The distribution network equipment is used to send the distribution network synchronization frame. The distribution network synchronization frame includes the router's BSSID.

The device to be connected to the network is used to store the correspondence between the SSID and the BSSID according to the received beacon frame, and to query the correspondence according to the BSSID in the distribution network synchronization frame to obtain the SSID.

In the system shown in Figure 1, the network distribution device can be a user terminal such as a mobile phone. The network distribution device can connect to the WiFi network by establishing a connection with a router, or the network distribution device can also be connected by connecting with other networked devices. Network, but the network distribution equipment has obtained the router information such as SSID and BSSID in some way. The devices to be connected to the network can be terminals such as smart refrigerators, smart speakers, and robots. An App corresponding to the device to be connected to the network is installed in the network distribution device. In daily applications, the user controls the device to be connected to the network through the App, such as switching control of the robot and controlling the walking route.

When the user configures the network of the device to be connected to the network through the network configuration device, first, the user connects the network device to the WiFi network by operating the network configuration device to establish a connection with the router, and then triggers it by operating the App corresponding to the device to be connected to the network For the network configuration of the device to be connected to the network, for example, click the "Network Configuration" button in the App interface to trigger the network configuration process.

Based on the user's trigger, the distribution network device can broadcast one or more distribution network synchronization frames. Since multiple types of data frames are specified in the 802.11 MAC layer protocol, the distribution network synchronization frame in the embodiment of the present invention can be selected from any of the multiple types of data frames specified in the 802.11 MAC layer protocol. One is to fill the Length field or Destination field in the selected data frame with a character string used to identify the data frame as a distribution network synchronization frame. In other words, a data frame with a preset value, that is, a preset length, is filled in the Length field as a distribution network synchronization frame.

It is understandable that since one of a variety of data frames is selected as the distribution network synchronization frame, in addition to the Length field filled with a preset character string, the distribution network synchronization frame also contains the original data frame It contains other fields, such as the source MAC address field, BSSID field, etc. Therefore, the distribution network synchronization frame will also include plain text information such as the BSSID of the router that the network distribution device accesses and the MAC address of the network distribution device.

When the device to be connected to the network receives the distribution network synchronization frame sent by the distribution network device, according to the preset character string filled in the Length field, it knows that the received is the distribution network synchronization frame, so that the BSSID of the router and the distribution network device can be parsed from it The MAC address and other information.

Among them, according to the MAC address of the network distribution device, the device to be connected to the network can lock the network distribution device, that is, know who the sender is.

In summary, based on the received distribution network synchronization frame, the device to be connected to the network can lock the network device and know the BSSID of the router to which the network device is connected.

On the other hand, the router to which the network distribution device is connected will broadcast and send a beacon frame (beacon frame) at a certain time interval (for example, 100 milliseconds), and the beacon frame contains the BSSID and SSID of the router. The device to be connected to the network that receives the beacon frame stores the SSID and BSSID of the received router correspondingly. For example, the device to be connected to the network can maintain a router list, which stores a pair of SSID and BSSID carried in each beacon frame received by the device to be connected to the network.

Based on this, for the device to be connected to the network, once it obtains the BSSID of a router according to the network configuration synchronization frame, it can search the current router list according to the BSSID. If the router list contains the BSSID and a certain SSID The corresponding relationship between the two, the SSID of the router can be obtained directly based on the corresponding relationship.

In order to realize the network access of the devices to be connected to the network, the devices to be connected to the network not only need to obtain the SSID of the router, but also at least need to obtain the PASSWD. The acquisition process of the PASSWD can be implemented in the traditional SmartConfig mode, which is compatible with the traditional network distribution mode. The traditional SmartConfig mode, as mentioned above, is to encode the distribution network information, and then transmit the coded distribution network information by successively sending the distribution network data frames. The detailed transmission process will be described in subsequent embodiments.

In summary, on the one hand, even if the subsequent network distribution equipment still sends the distribution network information including SSID and PASSWD in the traditional way, if the distribution network information is transmitted during the transmission process, if multiple bytes corresponding to the SSID are lost or other abnormalities, it will not It will affect the correct acquisition of the SSID by the device to be connected to the network.

On the other hand, since the SSID can be obtained in this way, optionally, the subsequent network distribution equipment may not need to send the SSID when sending the network distribution information. In other words, during the network distribution process, it is equivalent to only need to transmit the PASSWD field and auxiliary information to achieve the purpose of network distribution. If the length of the SSID and PASSWD are the same and the length of the auxiliary information is shorter, theoretically, the distribution efficiency will be nearly doubled, and the distribution success rate will also be significantly improved.

The method for obtaining the SSID of the router provided in the embodiment of the present invention will be described in detail below from the perspective of a network distribution device and a device to be connected to the network.

FIG. 2 is a flowchart of a method for obtaining an SSID of a router according to an embodiment of the present invention. The method for obtaining the SSID of the router may be executed by the device to be connected to the network shown in FIG. 1. As shown in Figure 2, the method includes the following steps:

201. Receive a beacon frame sent by a router. The beacon frame includes the SSID and BSSID of the router.

202. Store the correspondence between the SSID and the BSSID.

203. Receive the distribution network synchronization frame sent by the distribution network device, where the distribution network synchronization frame includes the BSSID of the router.

204. Query the corresponding relationship according to the BSSID in the distribution network synchronization frame to obtain the SSID.

As mentioned above, the length field (namely the Length field) or the destination MAC address field (namely the Destination field) in the distribution network synchronization frame is filled with a preset character string for identifying the distribution network synchronization frame. Therefore, the device to be connected to the network parses the preset character string and knows that the received is a distribution network synchronization frame, parses the BSSID of the router contained therein, and queries the locally stored correspondence based on the BSSID to obtain the corresponding SSID.

The detailed description of the execution process of the above steps can be added to the description in the foregoing embodiment, and will not be repeated here.

In addition, as mentioned above, the aforementioned distribution network synchronization frame may also include the MAC address of the network distribution device, so that the device to be connected to the network can lock the network distribution device according to the MAC address of the network distribution device. Locking the network distribution equipment means that the network equipment to be connected to record which network distribution equipment sent the network synchronization frame, and the network equipment can be uniquely identified by its MAC address, thus, it is equivalent to recording the MAC address of the network equipment and sending it The corresponding relationship between the BSSIDs in the distribution network synchronization frame. In addition, by locking the network distribution device, the device to be connected to the network also knows who needs to receive the network distribution information sent by the network distribution device, that is, it needs to receive the network distribution information sent by the network distribution device.

As mentioned above, if compatibility with the existing SmartConfig mode is considered, the network distribution information sent by the subsequent network distribution equipment may include the router's SSID, PASSWD and auxiliary information. However, if compatibility issues are not considered, the network distribution information sent by subsequent network distribution equipment may only include PASSWD and auxiliary information, but not SSID.

To put it simply, when the distribution network device sends the distribution network information, it can select one of the multiple data frames specified in the 802.11 MAC layer protocol to send the distribution network information. In the embodiment of the present invention, select The outgoing data frames used for sending distribution network information are called distribution network data frames, and these distribution network information are transmitted in the Length field or Destination field of the distribution network data frame.

Take the use of the Length field to transmit the distribution network information as an example. Limited by the number of bits that the Length field can carry, each distribution network data frame can only fill part of the information in the distribution network information. It is understandable that this part Information refers to the part of the complete bit string obtained after encoding the complete distribution network information. Therefore, the distribution network equipment will need to send multiple distribution network data frames in sequence to complete the transmission of the distribution network information.

Based on this, the equipment to be connected to the network receives the distribution network data frames sequentially sent by the network distribution equipment according to the distribution network information corresponding to the router, and finally obtains the router’s information by analyzing part of the information in the distribution network information included in each distribution network data frame. The distribution network information is connected to the network based on the obtained distribution network information.

It is understandable that if the distribution network information contains the SSID corresponding to the router, and in the process of sending the SSID, multiple distribution network data frames may need to be used. If any one of the distribution network data frames is lost, There is no impact on the networked device, because the device to be connected to the network has already obtained the SSID corresponding to the router based on the distribution synchronization frame sent by the network distribution device and the beacon frame sent by the router. This means that even if the SSID of the router is included in the distribution network data frame, so that the device to be connected to the network can parse the SSID from it, the device to be connected to the network will replace the SSID obtained from the distribution network data frame with the SSID obtained from the BSSID query. SSID.

FIG. 3 is a flowchart of another method for obtaining an SSID of a router according to an embodiment of the present invention. The method for obtaining the SSID of the router may be executed by the network distribution device shown in FIG. 1. As shown in Figure 3, the following steps can be included:

301. Establish a communication connection with a router.

302. Send the distribution network synchronization frame. The distribution network synchronization frame includes the router's BSSID, so that the device to be connected to the network that receives the distribution network synchronization frame determines that the BSSID has been stored locally, according to the correspondence between the BSSID and the SSID stored locally Get the SSID.

Wherein, the length field or the destination MAC address field in the distribution network synchronization frame is filled with a preset character string for identifying the distribution network synchronization frame, so that the equipment to be connected to the network can identify the distribution network synchronization frame accordingly.

The process of sending the network distribution synchronization frame by the network distribution device can be described in the previous embodiment, which is not repeated here.

In addition, after the distribution network device has sent the distribution network synchronization frame, it sends each distribution network data frame in turn according to the distribution network information corresponding to the router. Each distribution network data frame includes part of the information in the distribution network information, so that the device to be connected Each distribution network data frame is parsed to obtain distribution network information. Among them, part of the information contained in each distribution network data frame is carried in the length field of the distribution network data frame, that is, the Length field or the destination MAC address field, that is, the Destination field.

Among them, in the process of sending the network distribution data frame, optionally, the network distribution device may send it in the following manner:

Encode the distribution network information according to the preset encoding format;

Divide the encoded distribution network information into groups;

The packet frame and multiple distribution network data frames corresponding to each packet are sent in turn. The packet frame includes the group identifier of the corresponding packet. The multiple distribution network data frames correspond to multiple character strings included in the corresponding packet one-to-one. The character string is at least a part of the encoded distribution information;

Among them, the aforementioned distribution network synchronization frame is used as the first grouped packet frame.

Among them, the group identifier is carried in the Length field or the Destination field of the packet frame.

Wherein, the Length field or the Destination field in each distribution network data frame includes the corresponding character string and the in-group offset of the corresponding character string. That is to say, take the Length field as an example. The Length field occupies 12 bits. The 12 bits can be divided into two parts. The first part is used to fill the offset within the group, and the second part is used to fill the configuration. Part of the information in the web information is a character string of a certain length corresponding to the part of the information. In practical applications, the number of bits occupied by these two parts can be flexibly divided according to actual needs.

Therefore, after encoding the distribution network information, the complete bit sequence corresponding to the distribution network information is obtained. The above-mentioned process of grouping the coded distribution network information is: according to the number of bits occupied by the second part, the result is obtained after encoding The bit sequence is divided to obtain several strings, and each string needs to be transmitted by a distribution network data frame; in addition, in order to ensure that the equipment to be connected to the network can know the sending order of each distribution network data frame, it is necessary to determine the transmission sequence of each distribution network data frame. Frames are marked with sequence numbers, and in this embodiment, the sequence number marking of the network distribution data frame through the group identifier and the offset within the group is to mark the character strings contained in the network distribution data frame.

Among them, the packet frame mentioned in this embodiment can also be selected from a variety of data frames specified by the 802.11 MAC layer protocol as the packet frame. Taking the Length field as an example, fill in the Length field of different packet frames The group ID is different, where the first grouping frame is filled with the group ID of the first group, the second grouping frame is filled with the group ID of the second group, and so on. It is worth noting that the first packet frame can actually be the aforementioned delivery synchronization frame.

The following example is used to illustrate the sending process of the distribution network information of the distribution network device. This example uses the Length field to transmit the distribution network information as an example, and assumes that the second part of the Length field of each distribution network data frame can be filled in The number of characters in the string is 8 bits, which is one byte.

Assume that the complete distribution network information includes the following bytes after being encoded:

12 0F 0C 00 34 4D 41 4C 4C 00 32 4F 55 54 45 52 0D 08

Assuming that every 8 bytes are divided into one group, it is divided into the following three groups:

Group 1: 12 0F 0C 00 34 4D 41 4C

Group 2: 00 32 4F 55 54 45 52 0D

Group 3: 08

The offsets within the group are respectively expressed as: 0x100, 0x180, 0x200, 0x280, 0x300, 0x380, 0x400, 0x480, where:

0x100: indicates the first byte in the group

0x180: indicates the second byte in the group

...

And so on.

In addition, suppose that the packet identifiers filled in the Length field of the packet frames sent in sequence are: 0x3E0, 0x3E1, 0x3E2,..., 0x3EF, where:

0x3E0: indicates the first group

0x3E1: indicates the second group

...

And so on.

Based on the above assumptions, the sending process of the distribution network equipment is:

The first frame: the distribution network synchronization frame is the first packet frame, and the Length field is filled with 0x3E0;

The second frame: the first distribution network data frame in the first packet, the Length field is filled with 0x100+0x12=0x112; among them, the Length field is divided into the first part before the + sign and the second part after the + sign;

The third frame: the second distribution network data frame in the first packet, the Length field is filled with 0x180+0x0F=0x18F;

The fourth frame: the third distribution network data frame in the first packet, the Length field is filled with 0x200+0x0C=0x20C;

The fifth frame: the fourth distribution network data frame in the first packet, the Length field is filled with 0x280+0x00=0x280;

The sixth frame: the fifth distribution network data frame in the first packet, the Length field is filled with 0x300+0x34=0x334;

The seventh frame: the sixth distribution network data frame in the first packet, the Length field is filled with 0x380+0x4D=0x3CD;

The 8th frame: the 7th distribution network data frame in the 1st packet, the Length field is filled with 0x400+0x41=0x441;

The 9th frame: the 8th distribution network data frame in the 1st packet, the Length field is filled with 0x480+0x4C=0x4CC;

10th frame: 2nd packet frame, the Length field is filled with 0x3E1;

The 11th frame: the 1st distribution network data frame in the 2nd packet, the Length field is filled with 0x100+0x00=0x100;

The twelfth frame: the second distribution network data frame in the second packet, and the Length field is filled with 0x180+0x32=0x1B2;

The 13th frame: the 3rd distribution network data frame in the 2nd packet, the Length field is filled with 0x200+0x4F=0x24F;

The 14th frame: the 4th distribution network data frame in the 2nd packet, the Length field is filled with 0x280+0x55=0x2D5;

The 15th frame: the 5th distribution network data frame in the 2nd packet, the Length field is filled with 0x300+0x54=0x354;

The 16th frame: the 6th distribution network data frame in the 2nd packet, the Length field is filled with 0x380+0x45=0x3C5;

The 17th frame: the 7th distribution network data frame in the 2nd packet, the Length field is filled with 0x400+0x52=0x452;

The 18th frame: the 8th distribution network data frame in the 2nd packet, the Length field is filled with 0x480+0x0D=0x48D;

The 19th frame: the 3rd packet frame, the Length field is filled with 0x3E2;

The 20th frame: the 1st distribution network data frame in the 3rd packet, the Length field is filled with 0x100+0x08=0x108.

Optionally, after all the bytes are sent, the sending can be repeated from the beginning to ensure correct reception.

Based on the sending process, after each frame is received by the network-connected device, it parses out the corresponding character string according to the corresponding encoding rule, and replies with the position order of the character string.

FIG. 4 is an interaction diagram of a network distribution process provided by an embodiment of the present invention. As shown in FIG. 4, it may include the following steps:

401. The router sends a beacon frame, and the beacon frame includes the SSID and BSSID corresponding to the router.

402. After receiving the beacon frame, the network-connected device stores the correspondence between the SSID and the BSSID.

403. The distribution network device sends a distribution network synchronization frame, and the distribution network synchronization frame includes the MAC address of the distribution network device and the BSSID of the router accessed by the distribution network device.

404. After the network access device receives the distribution network synchronization frame, it queries the corresponding relationship stored locally according to the BSSID in the distribution network synchronization frame to obtain the corresponding SSID.

405. The network distribution equipment divides the encoded distribution network information into groups, and sequentially sends a grouping frame corresponding to each group and multiple distribution network data frames in the group.

406. The device to be connected to the network parses the received packet frames and network distribution data frames to obtain network distribution information, and connects to the network according to the obtained SSID and network distribution information.

The SSID obtaining apparatus of the router according to one or more embodiments of the present invention will be described in detail below. Those skilled in the art can understand that the SSID acquisition devices of these routers can all be configured by using commercially available hardware components through the steps taught in this solution.

FIG. 5 is a schematic structural diagram of a device for obtaining an SSID of a router according to an embodiment of the present invention. As shown in FIG. 5, the device includes: a receiving module 11, a storage module 12, and an obtaining module 13.

The receiving module 11 is configured to receive a beacon frame sent by a router, and the beacon frame includes the SSID and BSSID of the router.

The storage module 12 is configured to store the correspondence between the SSID and the BSSID.

The receiving module 11 is also configured to receive a distribution network synchronization frame sent by a network distribution device, where the distribution network synchronization frame includes the BSSID of the router.

The obtaining module 13 is configured to query the correspondence relationship according to the BSSID in the distribution network synchronization frame to obtain the SSID.

Optionally, the length field or the destination MAC address field in the distribution network synchronization frame is filled with a preset character string for identifying the distribution network synchronization frame.

Optionally, the network distribution synchronization frame further includes the MAC address of the network distribution equipment, and the apparatus may further include: a locking module, configured to lock the network distribution equipment according to the MAC address of the network distribution equipment .

Optionally, the receiving module 11 may also be used to: receive each distribution network data frame sequentially sent by the network distribution device according to the network distribution information corresponding to the router, and each distribution network data frame includes the distribution network At least part of the information in the information, the at least part of the information is carried in the length field or the destination MAC address field of the distribution network data frame. The device may further include: a parsing module for parsing each of the distribution network data frames to obtain the distribution network information.

Optionally, the network distribution information includes or does not include the SSID.

Optionally, the obtaining module 13 is further configured to: replace the SSID parsed from each distribution network data frame with the SSID obtained by the query.

The device shown in FIG. 5 can execute the method of the embodiment shown in FIG. 2. For parts that are not described in detail in this embodiment, reference may be made to the related description of the embodiment shown in FIG. 2. For the implementation process and technical effects of this technical solution, refer to the description in the embodiment shown in FIG. 2, which will not be repeated here.

In a possible design, the structure of the SSID obtaining device of the router shown in Figure 5 can be implemented as an electronic device, which is a device to be connected to the network that needs to be connected to the network, such as smart home appliances and robots that do not have a network configuration interface. Wait. As shown in FIG. 6, the electronic device may include: a first processor 21 and a first memory 22. Wherein, the first memory 22 is used to store a program that supports the electronic device to execute the SSID obtaining method of the router provided in the embodiment shown in FIG. 2, and the first processor 21 is configured to execute the first Programs stored in the memory 22.

The program includes one or more computer instructions, wherein, when the one or more computer instructions are executed by the first processor 21, the following steps can be implemented:

Store the correspondence between the SSID and the BSSID;

Optionally, the first processor 21 is further configured to execute all or part of the steps in the embodiment shown in FIG. 2.

Wherein, the structure of the electronic device may further include a first communication interface 23 for the electronic device to communicate with other devices or a communication network.

In addition, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by an electronic device, which includes a program for executing the SSID obtaining method of the router in the method embodiment shown in FIG. 2 above.

FIG. 7 is a schematic structural diagram of another device for acquiring an SSID of a router according to an embodiment of the present invention. As shown in FIG. 7, the device includes: a connecting module 31 and a sending module 32.

The connection module 31 is used to establish a communication connection with the router.

The sending module 32 is configured to send a distribution network synchronization frame, which includes the BSSID of the router, so that the device to be connected to the network that receives the distribution network synchronization frame determines that the BSSID is stored locally , Acquiring the SSID according to the correspondence between the BSSID and the SSID stored locally.

Optionally, the sending module 32 may also be used to: send each distribution network data frame in turn according to the network distribution information corresponding to the router, and each distribution data frame includes part of the information in the distribution network information to The device to be accessed is allowed to parse the respective distribution network data frames to obtain the distribution network information, and the partial information is carried in the length field or the destination MAC address field of the distribution network data frame.

Optionally, the device may further include: a preprocessing module, configured to encode the network distribution information according to a preset encoding format; and divide the encoded network distribution information into groups. Therefore, optionally, the sending module 32 may also be used to send a packet frame corresponding to each group and multiple distribution network data frames in the group in sequence, and the packet frame includes the group identifier of the corresponding group, and A plurality of distribution network data frames correspond one-to-one with a plurality of character strings included in the corresponding packet, and the plurality of character strings are at least part of the encoded distribution network information; wherein, the distribution network is synchronized The frame is the packet frame of the first packet, and the packet identifier is carried in the length field or the destination MAC address field of the packet frame.

Optionally, the length field or the destination MAC address field in each distribution network data frame includes a corresponding character string and an in-group offset of the corresponding character string.

FIG. 9 is a flowchart of a method for acquiring a service set identifier according to an embodiment of the present invention. The method for acquiring a service set identifier may be executed by the device to be accessed as shown in FIG. 1. As shown in Figure 9, the method includes the following steps:

501. Receive a first message sent by a network access device, where the first message includes first channel information and a first service set identifier;

Specifically, the first message may be a terminal provisioning protocol (Device provisioning protocol, DPP) configuration response message (configuration response). The first channel information may be the transmission or reception channel of the beacon frame. Optionally, the first message may also include an encoding processing identifier. The encoding processing identifier is used to indicate whether the terminal processes the service set identifier (SSID). The encoding process identifier can also be called an encoding status identifier or other names. For example, if the encoding process identifier is 1, the terminal will trigger the encoding process of the SSID. If the encoding process identifier is 0, the terminal does not trigger the encoding process of the SSID. Optionally, the meaning represented by the value of the encoding process identification can also be reversed.

502. Acquire a beacon frame according to the first channel information, where the beacon frame includes a second service set identifier and a second basic service set identifier;

Specifically, after receiving the DPP configuration response message sent by the network distribution device, the network device to be distributed will receive the beacon frame on the channel indicated by the first channel information. Optionally, the network device to be configured may also store the SSID and BSSID carried in the beacon frame in advance. In order to optimize the storage space, the network device to be configured may only save the SSID and BSSID in the latest primary beacon frame.

503. Determine a target service set identifier according to the first service set identifier and the second service set identifier.

Specifically, the first service set identifier is the SSID obtained from the DPP configuration response message. The second service set identifier is the SSID obtained from the beacon frame. If the network device to be configured determines whether the coding formats of the first SSID and the second SSID are the same, if they are the same, the network device to be configured will send the same SSID during the process of associating with the access point. If the network device to be configured determines that the encoding format of the first SSID and the second SSID are different, the network device to be configured sends the second SSID during the process of associating with the access point. Optionally, the network device to be configured can find the same BSSID in the DPP configuration response message and in the beacon frame, and find the corresponding first SSID and second SSID through the BSSID.

The device shown in FIG. 7 can execute the method of the embodiment shown in FIG. 3, and for parts that are not described in detail in this embodiment, reference may be made to the related description of the embodiment shown in FIG. 3. For the implementation process and technical effects of this technical solution, refer to the description in the embodiment shown in FIG. 3, which will not be repeated here.

In a possible design, the structure of the SSID obtaining device of the router shown in FIG. 7 can be implemented as an electronic device, which can be a network distribution device such as a mobile phone, a tablet computer, etc. that has been connected to the network. As shown in FIG. 8, the electronic device may include: a second processor 41 and a second memory 42. Wherein, the second memory 42 is used to store a program that supports the electronic device to execute the SSID obtaining method of the router provided in the embodiment shown in FIG. 3, and the second processor 41 is configured to execute the second Programs stored in the memory 42.

The program includes one or more computer instructions, and when the one or more computer instructions are executed by the second processor 41, the following steps can be implemented:

Establish a communication connection with the router;

Optionally, the second processor 41 is further configured to execute all or part of the steps in the embodiment shown in FIG. 3.

Wherein, the structure of the electronic device may further include a second communication interface 43 for the electronic device to communicate with other devices or a communication network.

In addition, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by an electronic device, which includes a program for executing the SSID obtaining method of the router in the method embodiment shown in FIG. 3.

The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement it without creative work.

Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by adding a necessary general hardware platform, and of course, it can also be implemented by a combination of hardware and software. Based on this understanding, the above technical solutions essentially or the part that contributes to the prior art can be embodied in the form of computer products, and the present invention can be used in one or more computer usable storage containing computer usable program codes. The form of a computer program product implemented on a medium (including but not limited to disk storage, CD-ROM, optical storage, etc.).

The present invention is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable devices are generated for implementation in the process Figure a process or multiple processes and/or a block diagram of a device with functions specified in one block or multiple blocks.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device, and the instruction device implements A function specified in a flow or multiple flows in a flowchart and/or a block or multiple blocks in a block diagram.

These computer program instructions can also be loaded on a computer or other programmable equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the instructions executed on the computer or other programmable equipment provide Steps used to implement the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

In a typical configuration, the computing device includes one or more processors (CPU), input/output interfaces, network interfaces, and memory.

The memory may include non-permanent memory in computer readable media, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of computer readable media.

Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology. The information can be computer-readable instructions, data structures, program modules, 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, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition herein, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit 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: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A method for obtaining the SSID of a router is characterized in that it is applied to a device to be connected to the network and includes:

Receiving a beacon frame sent by a router, where the beacon frame includes the SSID and BSSID of the router;

Store the correspondence between the SSID and the BSSID;

Receiving a distribution network synchronization frame sent by a distribution network device, where the distribution network synchronization frame includes the BSSID of the router;

Query the correspondence relationship according to the BSSID in the distribution network synchronization frame to obtain the SSID.
The method according to claim 1, wherein the length field or the destination MAC address field in the distribution network synchronization frame is filled with a preset character string for identifying the distribution network synchronization frame.
The method according to claim 1, wherein the distribution network synchronization frame further includes the MAC address of the distribution network device, and the method further comprises:

According to the MAC address of the network distribution device, the network distribution device is locked.
The method according to claim 3, wherein the method further comprises:

Receiving each distribution network data frame sequentially sent by the distribution network device according to the distribution network information corresponding to the router, each distribution data frame includes at least a part of the information in the distribution network information, and the at least part of the information is carried in The length field or destination MAC address field of the distribution network data frame;

Parse each of the distribution network data frames to obtain the distribution network information.
The method according to claim 4, wherein the SSID is included or not included in the network distribution information.
The method of claim 1, wherein the method further comprises:

Replace the SSID parsed from each distribution network data frame sent by the network distribution device with the SSID obtained by the query.
A method for obtaining the SSID of a router is characterized in that it is applied to a network distribution device and includes:

Establish a communication connection with the router;

Send a distribution network synchronization frame, the distribution network synchronization frame includes the BSSID of the router, so that the device to be connected to the network that has received the distribution network synchronization frame determines that the BSSID is stored locally, according to the locally stored BSSID The corresponding relationship between the BSSID and the SSID is used to obtain the SSID.
The method according to claim 7, wherein the length field or the destination MAC address field in the distribution network synchronization frame is filled with a preset character string for identifying the distribution network synchronization frame.
The method according to claim 7, wherein the method further comprises:

Each distribution network data frame is sequentially sent according to the distribution network information corresponding to the router, and each distribution network data frame includes part of the information in the distribution network information, so that the device to be connected to the network can parse the distribution network data frames To obtain the distribution network information, the part of the information is carried in the length field or the destination MAC address field of the distribution network data frame.
The method according to claim 9, wherein the sending each distribution network data frame sequentially according to the distribution network information corresponding to the router comprises:

Encoding the distribution network information according to a preset encoding format;

Divide the encoded distribution network information into groups;

The packet frame corresponding to each packet and the multiple distribution network data frames in the group are sequentially sent, the packet frame includes the group identifier of the corresponding group, and the multiple distribution network data frames are corresponding to multiple distribution network data frames included in the corresponding packet. One-to-one correspondence of character strings, and the multiple character strings are at least part of the encoded network distribution information;

Wherein, the distribution network synchronization frame is used as the packet frame of the first packet, and the packet identifier is carried in the length field or the destination MAC address field of the packet frame.
The method according to claim 10, wherein the length field or the destination MAC address field in each distribution network data frame includes a corresponding character string and an in-group offset of the corresponding character string.
An SSID acquisition device for a router, which is characterized in that it is applied to a device to be connected to the network, and the device includes:

A receiving module, configured to receive a beacon frame sent by a router, where the beacon frame includes the SSID and BSSID of the router;

A storage module for storing the correspondence between the SSID and the BSSID;

The receiving module is further configured to receive a distribution network synchronization frame sent by a network distribution device, where the distribution network synchronization frame includes the BSSID of the router;

The obtaining module is configured to query the correspondence relationship according to the BSSID in the distribution network synchronization frame to obtain the SSID.
An electronic device, characterized by comprising: a memory and a processor; wherein,

The memory is configured to store one or more computer instructions, wherein the one or more computer instructions implement the SSID acquisition method of the router according to any one of claims 1 to 6 when the one or more computer instructions are executed by the processor.
An SSID obtaining device for a router is characterized in that it is applied to a network distribution device, and the device includes:

The connection module is used to establish a communication connection with the router;

The sending module is configured to send a distribution network synchronization frame, which includes the BSSID of the router, so that the device to be connected to the network that receives the distribution network synchronization frame determines that the BSSID is stored locally, Obtain the SSID according to the correspondence between the BSSID and the SSID stored locally.
A method for obtaining a service set identifier, characterized in that it is applied to a device to be connected to the network, and includes:

Receiving a first message sent by a network access device, where the first message includes first channel information and a first service set identifier;

Acquiring a beacon frame according to the first channel information, the beacon frame including a second service set identifier and a second basic service set identifier;

Determine a target service set identifier according to the first service set identifier and the second service set identifier.
The method according to claim 15, wherein the method further comprises:

The first message further includes a first basic service set identifier, and the device to be accessed is based on the first service set identifier, the first service set identifier, the second service set identifier, and the second service set The identifier determines the target service set identifier.
An electronic device, characterized by comprising: a memory and a processor; wherein,

The memory is used to store one or more computer instructions, wherein the one or more computer instructions implement the SSID obtaining method of the router according to any one of claims 7 to 11 when the one or more computer instructions are executed by the processor.
A router SSID acquisition system, which is characterized by comprising: network distribution equipment, routers, and equipment to be connected to the network;

The router is configured to send a beacon frame, and the beacon frame includes the SSID and BSSID of the router;

The network distribution device is configured to send a distribution network synchronization frame, and the distribution network synchronization frame includes the BSSID of the router;

The device to be connected to the network is configured to store the correspondence between the SSID and the BSSID according to the received beacon frame, and to query the correspondence according to the BSSID in the distribution network synchronization frame to Obtain the SSID.