WO2015042922A1

WO2015042922A1 - Method and device for querying wireless access point and network system

Info

Publication number: WO2015042922A1
Application number: PCT/CN2013/084632
Authority: WO
Inventors: 陈济; 丁志明; 杨云松
Original assignee: 华为终端有限公司
Priority date: 2013-09-29
Filing date: 2013-09-29
Publication date: 2015-04-02

Abstract

Disclosed are a method and device for querying a wireless access point and a network system, which relate to the field of communications, and can improve the utilization rate of network wireless resources, and reduce the power consumption of a terminal device at the same time. The specific implementation method comprises: receiving, by a wireless access point, a detection request message sent by a terminal device, wherein a service set identification field in the detection request message comprises indication information, the indication information is used for indicating to the wireless access point the type of wireless access point to be searched by the terminal device, the indication information comprises at least one of a preset control character, a preset keyword, a preset symbol, a preset string and a preset identifier; and determining, by the wireless access point, whether to feed back a detection response message to the terminal device according to the detection request message. The present invention is applied to a WIFI network connection.

Description

Wireless access point query method, device and network system

The present invention relates to the field of communications, and in particular, to a method, device, and network system for querying a wireless access point. Background technique

Today, with the expansion of various electronic devices (such as laptops, PADs, and smartphones), more and more electronic devices supporting WiFi (Wireless Fidelity) technology, and WiFi is unique. The advantages of rapid deployment, convenient use, and high transmission rate have led to an increase in the number of users who use WiFi. The typical network structure of WiFi includes a wireless access point (AP) that is responsible for the central control function and a STA (Station) associated with the AP. Specifically, the STA can query the AP by actively detecting the request message by using the probe request request message when querying the AP. The probe request message carries the condition of the STA query. When the query condition in the probe request message is met, the AP may return a probe response message to the STA, so that the STA discovers the AP and then accesses the WiFi network.

However, the inventors have discovered that when a STA that supports a revised version of the 802.1 1 (WiFi standard) is queried by broadcasting a specific probe request message carrying the information required by the 802.1 1 revision. When a new AP supporting the 802.1 1 revision is supported, the legacy AP supporting the 802.11 version skips the information required by the 802.1 1 revision when parsing the probe request message, so that the STA not only The probe response message fed back by the supported new AP that is queried by the STA is received, and a probe response message that is not fed back by the traditional AP may be received. In this way, the useless probe response messages fed back by the traditional AP occupy radio waves in the air, thereby wasting resources of the wireless network, and the STA needs to parse the useless probe response messages, thereby Increased STA workload and power consumption. Summary of the invention

The embodiments of the present invention provide a wireless access point query method, device, and network system, which can improve the utilization of network wireless resources and reduce the power consumption of the terminal device.

The first aspect provides a method for querying a wireless access point, including:

Receiving, by the wireless access point, the probe request message sent by the terminal device, where the service set identifier field in the probe request message includes indication information, where the indication information is used to indicate to the wireless access point that the terminal device is to be searched The type of the wireless access point; the indication information includes: at least one of a preset control character, a preset keyword, a preset symbol, a preset character string, and a preset identifier;

The wireless access point determines whether to feed back a probe response message to the terminal device according to the probe request message.

In a first possible implementation manner, according to the first aspect, the probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to connect to the wireless The entry point indicates the service that the terminal device wants to find;

Determining, by the wireless access point, whether the probe response message is fed back to the terminal device according to the probe request message includes:

When the wireless access point identifies the indication information in the service set identifier field, and supports the service indicated by the at least one service information in the service indication information in the probe request message, the wireless access point And feeding back a probe response message to the terminal device.

In a second possible implementation manner, according to the first aspect, the service set identifier field further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to send the wireless The access point indicates the service that the terminal device wants to find;

When the wireless access point identifies the indication information in the service set identifier field, And when the service indicated by the at least one service information of the service indication information in the service set identifier field is supported, the wireless access point feeds back a probe response message to the terminal device.

In a third possible implementation manner, according to the first aspect, the determining, by the wireless access point, whether the probe response message is fed back to the terminal device according to the probe request message includes:

When the wireless access point identifies the indication information in the service set identifier field, the wireless access point feeds back a probe response message to the terminal device.

The second aspect provides a method for querying a wireless access point, including:

The terminal device sends a probe request cancellation to the wireless access point, so that the wireless access point determines, according to the probe request message, whether to feed back a probe response message to the terminal device; where the service set identifier field in the probe request message The indication information is used to indicate to the wireless access point the type of the wireless access point that the terminal device is to find; the indication information includes: a preset control character, a preset keyword, At least one of a preset symbol, a preset character string, and a preset identifier.

In a first possible implementation manner, according to the first aspect, the probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used for the wireless The access point indicates the service that the terminal device wants to find.

In a second possible implementation manner, according to the first aspect, the service set identifier field further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to The wireless access point indicates the service that the terminal device wants to find.

In a third aspect, a wireless access point is provided, including:

An information receiving unit, configured to receive a probe request message sent by the terminal device, where the service set identifier field in the probe request message includes indication information, where the indication information is used to indicate, to the wireless access point, the terminal device The type of the wireless access point that is found; the indication information includes: at least one of a preset control character, a preset keyword, a preset symbol, a preset character string, and a preset identifier;

a determining unit, configured to cancel, according to the probe request received by the information receiving unit Determine whether to feed back a probe response message to the terminal device.

The determining unit is specifically configured to: when the wireless access point identifies the indication information in the service set identifier field, and support the service indicated by the at least one service information in the service indication information in the probe request message The wireless access point feeds back a probe response message to the terminal device.

The determining unit is specifically configured to: when the wireless access point identifies the indication information in the service set identifier field, and supports the service indicated by the at least one service information of the service indication information in the service set identifier field The wireless access point feeds back a probe response message to the terminal device.

In a third possible implementation, according to the third aspect:

The determining unit is specifically configured to: when the wireless access point identifies the indication information in the service set identifier field, the wireless access point feeds back a detection response message to the terminal device.

The fourth aspect provides a terminal device, including:

An information sending unit, configured to send a probe request message to the wireless access point, so that the wireless access point determines, according to the probe request message, whether to feed back a probe response message to the terminal device, where the service in the probe request message The set identifier field includes indication information, where the indication information is used to indicate to the wireless access point a type of a wireless access point that the terminal device is to find; the indication information includes: a preset control character, a preset At least one of a keyword, a preset symbol, a preset string, and a preset identifier. In a first possible implementation manner, according to the fourth aspect, the probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used for the wireless The access point indicates the service that the terminal device wants to find.

In a second possible implementation, according to the fourth aspect, the service set identifier field further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to The wireless access point indicates the service that the terminal device wants to find.

In a fifth aspect, a wireless access point is provided, including:

a receiver, configured to receive a probe request message sent by the terminal device, where the service set identifier field in the probe request message includes indication information, where the indication information is used to indicate to the wireless access point that the terminal device is to be found The type of the wireless access point; the indication information includes: at least one of a preset control character, a preset keyword, a preset symbol, a preset character string, and a preset identifier;

And a processor, configured to determine, according to the probe request message, whether to feed back a probe response message to the terminal device.

In a first possible implementation manner, according to the fifth aspect, the probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to connect to the wireless The entry point indicates the service that the terminal device wants to find;

The processor is specifically configured to: when the wireless access point identifies the indication information in the service set identifier field, and support the service indicated by the at least one service information in the service indication information in the probe request message The wireless access point feeds back a probe response message to the terminal device.

In a second possible implementation manner, according to the fifth aspect, the service set identifier field further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to send the wireless The access point indicates the service that the terminal device wants to find;

The processor is specifically configured to: when the wireless access point identifies the service set label When the indication information in the field is identified, and the service indicated by the at least one service information of the service indication information in the service set identifier field is supported, the wireless access point feeds back the probe response message to the terminal device.

In a third possible implementation, according to the fifth aspect:

The processor is specifically configured to: when the wireless access point identifies the indication information in the service set identification field, the wireless access point feeds back a probe response message to the terminal device.

In a sixth aspect, a terminal device includes:

a transmitter, configured to send a probe request message to the wireless access point, so that the wireless access point determines, according to the probe request message, whether to feed back a probe response message to the terminal device; where the service set in the probe request message The indication field includes indication information; the indication information is used to indicate to the wireless access point, the type of the wireless access point that the terminal device is to find; the indication information includes: a preset control character, a preset key At least one of a word, a preset symbol, a preset character string, and a preset identifier.

In a first possible implementation manner, according to the sixth aspect, the probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to send the wireless The access point indicates the service that the terminal device wants to find.

In a second possible implementation, according to the sixth aspect, the service set identifier field further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to The wireless access point indicates the service that the terminal device wants to find.

In a seventh aspect, a network system is provided, including:

a terminal device, configured to send a probe request message to the wireless access point, so that the wireless access, according to the probe request message, determine whether to feed back a probe response message to the terminal device; where the service in the probe request message The set identifier field includes indication information, where the indication information is used to indicate to the wireless access point a type of a wireless access point that the terminal device is to find; the indication information includes: a preset control character, a preset At least one of a keyword, a preset symbol, a preset string, and a preset identifier. a wireless access point, configured to receive a probe request message sent by the terminal device, and configured to determine, according to the probe request message, whether to feed back a probe response message to the terminal device.

The wireless access point query method, device, and network system provided by the embodiment of the present invention add the indication information to the service set identifier field in the probe request message sent by the terminal device to the wireless access point, so that the terminal device wants to find the wireless After the access point recognizes the indication information, the access point feeds back the probe response message to the terminal device, and the other wireless access points do not feedback, thereby improving the utilization of the wireless network resource and reducing the power consumption of the terminal device.

BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a schematic flowchart of a method for querying a wireless access point according to an embodiment of the present invention;

2 is a schematic flowchart of another method for querying a wireless access point according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of still another method for querying a wireless access point according to an embodiment of the present invention;

4 is a schematic structural diagram of a wireless access point according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention; A schematic diagram of a structure of a wireless access point;

FIG. 7 is a schematic structural diagram of a terminal device according to another embodiment of the present invention; FIG. 8 is a schematic structural diagram of a network system according to an embodiment of the present invention;

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment provided by the present invention is applied to a scenario in which a terminal device searches for a wireless access point in a WiFi (Wireless Fidelity) network connection process, and the existing WiFi typical network structure includes wireless access for the central control function. Point and STA (Station, site) associated with the wireless access point. The foregoing STA may be the terminal device in the present invention, and the foregoing wireless access point may be divided into a traditional wireless access point (ie, a wireless access point supporting the WiFi 802.11 standard) and a new wireless access point ( That is, WiFi-enabled (802.1 revision) standards or other new WiFi standards (eg, 802.llu or 802.1 1 ai) wireless access points). The manner in which the terminal device searches for the wireless access point before connecting to the WiFi network includes: the terminal device passively monitors the wireless access point period '1' to broadcast the beacon message to discover the existence of the wireless access point; or, the terminal device actively broadcasts The robe request probes the request message to discover the wireless access point. However, when a device supporting the new WiFi standard looks for a new wireless access point that supports the new WiFi standard, the prior art is added to the probe request message. The IE (Information Element) required by the device supporting the new WiFi standard, and the traditional wireless access point does not recognize the IE, and will skip the unknown IE, thereby successfully parsing the robe request message and The terminal device feeds back a robe response detection response message, and the useless probe response messages fed back by these conventional wireless access points occupy radio waves in the air, thereby causing waste of radio resources. Therefore, how to effectively identify these wireless access points Whether it is the wireless access that the terminal device wants to find The point is the problem to be solved by the present invention.

Furthermore, the data frame of the above probe request message is mainly composed of a frame header, a frame body, and a check FCS (Frame Check Sequence). Specifically, the robe request message includes three elements: Address1, Address3, and SSID (Service Set Identifier). Addressl and Address3 are in the frame header of the probe request message. Specifically, Addressl indicates the MAC address of the receiver, and the length is 6 bytes. When the terminal device broadcasts the robe request message, the Addressl fills in a broadcast address. , that is, all 1; Address 3 indicates the address of the wireless access point of the network, and the length is 6 bytes. When the terminal device broadcasts the probe request message and there is no fixed wireless access point address, the Address 3 is set to one. The wildcard is also all ones. The above SSID belongs to an IE (Information Element) of the frame body in the frame body of the probe request message. Specifically, the IE in the probe request message frame body is a structure consisting of an Element ID (which is a unified number specified by the protocol), a Length (a length range of 0 to 32), and an information element body, and an IE for the SSID. The information element body is the SSID field, which indicates the specific content of the SSID. The Length indicates the length of the SSID field of the above information element body. When the Length is 0, the SSID is the wildcarded SSID. When the terminal device broadcasts a robe request message, the S SID may be a specific S SID value or a wildcard SSID.

Based on the foregoing application scenario, an embodiment of the present invention provides a method for querying a wireless access point. On the wireless access point side, as shown in FIG. 1, the method for querying the wireless access point specifically includes the following steps:

101. The wireless access point receives a probe request message sent by the terminal device.

The probe request message is a probe request message, and the probe request message includes, but is not limited to: Address l Address 3 and a service set identifier field of the wireless local area network, that is, an SSID field, where the service set identifier field includes indication information; and the indication The information is used to indicate to the wireless access point the type of wireless access point that the terminal device is looking for. Because the indication information is added, the content in the SSID field is not necessarily equal to the SSID named by the wireless access point that the terminal device is to find, that is, the terminal device is not necessarily equal to the terminal device. The beacon (beacon frame) sent by the found wireless access point carries the content carried in the SSID field. In addition, it should be noted that the wireless access point mentioned in the present invention may be not only a wireless access point of a private WiFi network, but also a WLAN (Wireless Local Area Networks) network provided by an operator. Wireless access point.

Specifically, the foregoing indication information includes: a preset control character, a preset keyword, a preset symbol, a combination of any one or more of a preset character string and a preset identifier. For example, the foregoing indication information may be a preset keyword; or, as a preset combination of a keyword and a symbol, the symbol may include a control character; or, as a preset character string, the string may also include There are control characters; or, it is a combination of a preset string and an identifier; or, it is a combination of a preset string and a symbol; or, it may be a combination of a preset string and a keyword.

Specifically, the indication information may be expressed as any combination of all characters in the ASCII character set (including some control characters that are not easily input manually, such as SUB (substitute) characters in the ASCII code number 26, or numbered 27 ESC (escape) (escape, overflow) character). The indication information can also be expressed as UTF-8 encoding.

Optionally, the foregoing probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to indicate, to the wireless access point, a service that the terminal device wants to find.

Optionally, the foregoing service set identifier field further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to indicate, to the wireless access point, the service that the terminal device wants to find.

102. The wireless access point determines, according to the probe request message, whether to feed back the probe response message to the terminal device.

Specifically, when the wireless access point is a wireless access point to be searched by the terminal device, the wireless access point feeds back a probe response message to the terminal device according to the indication information in the probe request message. When the wireless access point is not the wireless access point searched by the terminal device, the probe response message is not fed back to the terminal device. In addition, since the terminal device adds an indication letter to the SSID field in the sent probe request message Therefore, when the wireless access point to be searched by the terminal device determines whether to feed back the probe response message to the terminal device, it is not determined in the SSID field of the probe request message as described in the prior art and the terminal device desires. Whether the discovered SSID of the wireless access point itself is the same as the judgment criterion, but is determined by identifying the indication information in the SSID field in the probe request message.

The wireless access point query method provided by the embodiment of the present invention adds the indication information to the service set identifier field in the probe request message sent by the terminal device to the wireless access point, so that the wireless access point to be found by the terminal device is identified. After the indication information, the probe response message is fed back to the terminal device, and the other wireless access points do not feed back, thereby improving the utilization of the wireless network resource and reducing the power consumption of the terminal device.

An embodiment of the present invention provides a method for querying a wireless access point. On the terminal device side, as shown in FIG. 2, the method for querying the wireless access point specifically includes the following steps:

201. The terminal device sends a probe request message to the wireless access point wireless access point, so that the wireless access point determines, according to the probe request message, whether to feed back the probe response message to the terminal device.

The probe request message is a probe request message, and the probe request message includes, but is not limited to: Address 1, Address 3, and a service set identifier field of the wireless local area network, that is, an SSID field, where the service set identifier field includes indication information; The indication information is used to indicate to the wireless access point the type of wireless access point that the terminal device is to find. Because the indication information is added, the content in the SSID field is not necessarily equal to the SSID named by the wireless access point that the terminal device is to find, that is, the beacon sent by the wireless access point that the terminal device is to find. The content carried in the SSID field is carried in the frame. In addition, it should be noted that the wireless access point mentioned in the present invention may be not only a wireless access point of a private WiFi network, but also a WLAN (Wireless Local Area Networks) network provided by an operator. Wireless access point.

Specifically, the foregoing indication information includes: a preset control character, a preset keyword, a preset symbol, a combination of any one or more of a preset character string and a preset identifier. For example: The above indication information can be a preset keyword; or For a combination of a preset keyword and a symbol, the symbol may include a control character; or, as a preset character string, the string may also include a control character; or, a preset combination of a character string and an identifier; Or, it is a combination of a preset string and a symbol; or, it may be a combination of a preset string and a keyword.

An embodiment of the present invention provides a method for querying a wireless access point. As shown in FIG. 3, the method for querying the wireless access point specifically includes the following steps:

301. The terminal device sends a probe request message to the wireless access point wireless access point. The foregoing probe request message includes, but is not limited to: Address 1, Address 3, and a service set identifier field of the wireless local area network, where the service set identifier field includes indication information, and the indication information is used to indicate to the wireless access point The type of wireless access point found. Because the indication information is added, the content in the SSID field is not necessarily equal to the SSID named by the wireless access point that the terminal device is to find, that is, the beacon sent by the wireless access point that the terminal device is to find. Carrying in the frame) Content carried in the SSID field. In addition, it should be noted that the wireless access point mentioned in the present invention may be not only a wireless access point of a private WiFi network, but also a wireless access point of a WLAN network provided by an operator.

Specifically, the foregoing indication information includes: a preset control character, a preset keyword, a preset symbol, a combination of any one or more of a preset character string and a preset identifier. For example, the above indication information may be a preset keyword (eg,

"TGaq", where TG is the abbreviation of Task Group, TGaq means aq task group. Here is an example of TGaq keyword, which can be named at the time of actual application; or it can be preset a combination of keywords and symbols (eg,

"TGaq-#-#" ), where "-" and "#" are examples of specific characters, you can choose a specific character at will in the actual application; or, you can also use a preset string (such as , 80211 AdditionalMatchFilter ); Or, it can also be a combination of preset strings, preset symbols and preset identifiers (eg, "TGaq: Printer | Scanner", express TGaq function and have rinter (printer Yueliang) Or the wireless access point of the scanner (scanner service); for example,

"8021 1AddionalMatchFilter: TGaq|TGu", the expression is to find the wireless access point with TGaq or TGu service in the new function of 8021 1AddionalMatchFilter); or it can be a preset control character or a combination of string and symbol; or , can also be a combination of preset strings, preset symbols, and keywords

(For example, "SUB+TGaq", where SUB is the character of ASCII code 26, SUB(substitute)).

Specifically, the indication information is any combination of all characters that can be expressed in the ASCII character set (including some preset control characters that are not easily input manually, such as SUB (substitute) characters in the ASCII code numbered 26 , or the ESC (escape) character with the number 27. The indication information can also be expressed as a UTF-8 encoding.

Optionally, the foregoing probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to indicate, to the wireless access point, a service that the terminal device is to find. Optionally, the foregoing service set identifier field further includes service indication information, where the service indication information includes at least one type of service information, where the service indication information is used to indicate, to the wireless access point, a service that the terminal device wants to find.

302. The wireless access point receives a probe request message sent by the terminal device.

303. The wireless access point determines, according to the probe request message, whether to feed back a probe response message to the terminal device.

Specifically, when the wireless access point is a wireless access point to be searched by the terminal device, the wireless access point may identify the indication information in the foregoing probe request message, thereby feeding back the probe response message to the terminal device; The wireless access point is not a wireless access point that is searched by the terminal device, and the probe response message is not fed back to the terminal device. When the wireless access point identifies the indication information, the wireless access point may directly determine, according to a matching policy pre-configured in the wireless access point, whether the wireless access point meets the wireless indication indicated by the indication information. The access point type, if yes, indicates that the wireless access point is a wireless access point that the terminal device is to find, wherein the matching policy is an indication information table that the wireless access point can support; or, the wireless The access point can directly identify whether it conforms to the type of wireless access point indicated by the indication information. In addition, since the terminal device adds the indication information to the SSID field in the sent probe request message, the wireless access point to be searched by the terminal device determines whether to feed back the probe response message to the terminal device, which is not the prior art. Determining whether the content in the SSID field of the probe request message is the same as the S SID named by the wireless access point itself to be searched by the terminal device is a criterion, but to identify the SSID field in the probe request message. Instructions to determine.

In the first application scenario:

Optionally, when the probe request message further includes service indication information, the service The indication information includes at least one type of service information, when the service indication information is used to indicate to the wireless access point the service supported by the terminal device.

Further, step 303 specifically includes the following steps:

303 a, when the wireless access point identifies the indication information in the service set identifier field, and supports the service indicated by the at least one service information in the service indication information in the probe request message, the wireless access point feeds back the detection to the terminal device. Response message.

Specifically, in this embodiment, when the foregoing indication information is exemplified by a preset character string "80211 AdditionalMatchFilter", and the foregoing service indication information is taken as an example of "802.1 1 Additional Matching Filter IE", the present implementation The specific implementation process is as follows.

First, the terminal device adds an indication message to the S SID of the probe request message sent to the wireless access point, and the indication information is a preset string, and the string is "8021 1 AdditionalMatchFilter". Then, a new IE (ie, service indication information) can be added to the frame body of the probe request message, and the new IE is called 802.1 1 Additional Matching Filter IE, or an existing IE, or a new 802. 1 1 Additional Matching Filter The IE or the modified IE includes an information element body Filter, which contains the service information in the service indication information, and specifically, can be used to indicate to the wireless access point the service supported by the terminal device.

Specifically, the format of the Filter section can be in a variety of ways.

The first way: The Filter can be in the form of a bit table.

Specifically, the filter table is set as a preset mapping table of keywords and digits. For example, the first digit indicates TGaq, the second digit indicates TGai, the other indicates other functions, or is reserved. Of course, the number of bits here is not limited to one byte, that is, eight bits, but also multiple bytes, and the length is indicated by Length.

The second way: The Filter can be a mapping table in the form of a Filter ID. Specifically, each Filter ID in the Filter table defines a function, for example, the ID of the TGaq is defined as 1, the ID of the TGai is defined as 2, and the ID of the TGu is defined as 3. Specifically, it can be specified that each Filter ID occupies one byte.

Second, the terminal device sends the probe request message generated by the foregoing process to the wireless interface. Incoming point, when the wireless access point is a new wireless access point, the new wireless access point can directly identify whether the new wireless access point satisfies a preset string in the S SID field of the probe request message. If the determination condition is satisfied, the new wireless access point feeds back the probe response message to the terminal device, and if not, the new wireless access point does not perform any processing. Specifically, when the new wireless access point identifies the preset character string in the SSID field of the probe request message, and determines that the wireless access point type indicated by the preset character string is satisfied, the new wireless access point continues to view the The new IE (802.1 1 Additional Matching Filter IE) carried in the probe request message or the modified IE specifically indicates which functions, if any function of the new wireless access point itself If the service function of any service information in the service indication information matches, the probe response message is fed back to the terminal device. In addition, when the wireless access point is a conventional wireless access point, since the traditional wireless access point S SID is generally not named "8021 1AdditionalMatchFilter", when the conventional wireless access point receives the probe request message After that, the S SID of the traditional wireless access point itself cannot match the S SID in the probe request message, and the probe response message is not fed back.

In the second application scenario:

Optionally, when the service set identifier field further includes service indication information, the service indication information includes at least one type of service information, where the service indication information is used to indicate a service supported by the terminal device to the wireless access point.

Further optionally, step 303 specifically includes the following steps:

303b, when the wireless access point identifies the indication information in the service set identifier field, and supports the service indicated by the at least one service information of the service indication information in the service set identifier field, the wireless access point feeds back the probe response to the terminal device. Message.

Specifically, in this embodiment, when the foregoing indication information is a preset keyword, When the combination of the preset symbol and the preset identifier (ie, the service indication information) (for example, "TGaq: Printer] Scanner") is taken as an example, the specific implementation process of this embodiment is as follows.

The foregoing preset keyword specifically refers to "TGaq", and the service indicated in the foregoing service indication information specifically includes a printer service (Scanner) and a scanner service (Scanner), and the above indication information is "TGaq: Printer| The Scanner" is specifically used to indicate that the wireless access point that the terminal device is looking for has the TGaq function and supports the printer service or the scanner service. In addition, the preset symbol in the instruction message "TGaq: Printer | Scanner" " can express the relationship or, of course, the "&" symbol can also be used to indicate the relationship with "," "TGaq: Printer&Scanner" means that the wireless access point that the terminal device is looking for has TGaq function, and supports printer business and scanner. business.

Specifically, after the terminal device adds the indication information generated by the foregoing process to the probe request message, the terminal request message is sent to the wireless access point, and when the wireless access point is a new wireless access point, the new type of wireless access The point can directly identify the indication information in the probe request message, and then the new wireless access point determines whether it supports the TGaq function according to the "TGaq" in the indication information, and if so, determines whether the new wireless access point is Supports Printer and/or Scanner services. If the new wireless access point supports the printer service and any one of the services in the Scanner service, the new wireless access point is the wireless access point that the terminal device is looking for. The terminal device feeds back the probe response message. In addition, when the wireless access point is a conventional wireless access point, since the conventional wireless access point S SID is generally not named "TGaq: Printer] Scanner", when the conventional wireless access point receives the After the probe request message, the S SID of the conventional wireless access point itself cannot match the S SID in the probe request message, and the probe response message is not fed back.

The wireless access point query method provided by the embodiment of the present invention adds the indication information to the service set identifier field in the probe request message sent by the terminal device to the wireless access point, so that the wireless access point to be found by the terminal device is identified. After the indication information, the probe response message is fed back to the terminal device, and the other wireless access points do not feed back, thereby improving the utilization of the wireless network resource and reducing the power consumption of the terminal device. In the third application scenario:

Optionally, step 303 specifically includes the following steps:

303c. When the wireless access point identifies the indication information in the probe request message and satisfies the type of the wireless access point indicated by the indication information, the wireless access point feeds the probe response message to the terminal device.

Specifically, in the present invention, there is a scenario in which the indication information included in the SSID in the probe request message is combined, that is, whether the indication information is a separate preset keyword or a preset keyword and a preset Combination of a string or other combination of characters, as long as the wireless access point identifies the indication information in the probe request message (ie, the wireless access point satisfies the type of wireless access point indicated by the indication information) The wireless access point will feed back the probe response message to the terminal device.

In the fourth application scenario:

Optionally, when the wireless access point is not the wireless access point (ie, the traditional wireless access point) requested by the terminal device, before step 303, the method further includes:

d 1. The wireless access point acquires the second service set identifier of the wireless access point.

Further optionally, step 303 specifically includes the following steps:

303 dl, the wireless access point matches the service set identifier with the second service set identifier.

303 d2. If the service set identifier is different from the second service set identifier, the wireless access point does not feed back the probe response message.

Specifically, when the wireless access point that the terminal device wants to find is a new type of wireless access point, after receiving the probe request message sent by the terminal device, the traditional wireless access point finds that the probe request message is that the terminal device is broadcast. After determining that it needs to be processed, first obtaining the S SID IE of the traditional wireless access point, and then sequentially determining the Address 3 and the SSID IE in the probe request message, and discovering the SSID IE in the probe request message. The Length is not 0, not the wildcard S SID, and then the SSID in the probe request message is matched with the S SID of the legacy wireless access point, and the S SIDs of the two are not the same, therefore, the traditional wireless The access point knows that it does not need to process the probe request message, that is, the traditional wireless access point discards the probe request message, and thus does not send a probe response message to the terminal device.

An embodiment of the present invention provides a wireless access point. As shown in FIG. 4, the wireless access point 4 includes: an information receiving unit 41 and a determining unit 42, where:

The information receiving unit 41 is configured to receive a probe request message sent by the terminal device. The service set identifier field in the probe request message includes the indication information; the indication information is used to indicate to the wireless access point the type of the wireless access point that the terminal device is to find; the foregoing indication information includes: preset control At least one of a character, a preset keyword, a preset symbol, a preset character string, and a preset identifier.

The determining unit 42 is configured to determine, according to the probe request message received by the information receiving unit 41, whether the probe response cancellation is fed back to the terminal device.

Optionally, the foregoing probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to indicate, to the wireless access point, the service that the terminal device wants to find.

The determining unit 42 is specifically configured to: when the wireless access point identifies the indication information in the service set identifier field, and supports the service indicated by any service information in the service indication information in the probe request message, the wireless access point to the terminal Device feedback detection response cancellation, 3⁄4.

Optionally, the foregoing service set identifier field further includes service indication information, where the service indication information includes at least one type of service information, where the service indication information is used to indicate, to the wireless access point, the service that the terminal device wants to find.

The determining unit 42 is specifically configured to: when the wireless access point identifies the service set identifier field When the indication information in the information and the service indicated by any service information of the service indication information in the service set identifier field is supported, the wireless access point feeds back the probe response cancellation to the terminal device, 3⁄4.

Optionally, the determining unit 42 is specifically configured to: when the wireless access point identifies the indication information in the service set identifier field, the wireless access point feeds back the probe response message to the terminal device.

The wireless access point provided by the embodiment of the present invention adds the indication information by using the service set identifier field in the probe request message sent by the terminal device to the wireless access point, so that the wireless access point that the terminal device wants to find is identifying the After the indication information, the probe response message is fed back to the terminal device, and the other wireless access points do not feedback, thereby improving the utilization of the wireless network resource and reducing the power consumption of the terminal device.

It should be noted that the implementation manner and interaction process of each unit in the wireless access point in the foregoing various embodiments of the present invention may refer to related descriptions in the corresponding method embodiments.

An embodiment of the present invention provides a terminal device. As shown in FIG. 5, the terminal device 5 includes: an information sending unit 5 1 , where:

The information sending unit 5 1 is configured to send a probe request message to the wireless access point, so that the wireless access point determines, according to the probe request message, whether to feed back the probe response message to the terminal device.

The service set identifier field in the probe request message includes the indication information; the indication information is used to indicate to the wireless access point the type of the wireless access point that the terminal device is to find; the foregoing indication information includes: preset control At least one of a character, a preset keyword, a preset symbol, a preset character string, and a preset identifier.

Optionally, the foregoing probe request message further includes service indication information; the service indication information includes at least one service information, where the service indication information is used to indicate, to the wireless access point, a service supported by the terminal device.

Optionally, the foregoing service set identifier field further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to indicate, to the wireless access point, a service supported by the terminal device.

A terminal device provided by an embodiment of the present invention, by using wireless access in a terminal device The service set identifier field in the probe request message sent by the point joins the indication information, so that the wireless access point that the terminal device wants to find feeds back the probe response message to the terminal device after identifying the indication information, and the other wireless access points do not Feedback, thereby improving the utilization of wireless network resources, while reducing the power consumption of the terminal equipment.

It should be noted that the implementation manners of the information sending unit in the terminal device in the foregoing various embodiments of the present invention may refer to related descriptions in the corresponding method embodiments.

An embodiment of the present invention provides a wireless access point. As shown in FIG. 6, the wireless access point 6 includes: a receiver 61 and a processor 62, where:

The receiver 61 is configured to receive a probe request message sent by the terminal device.

The processor 62 is configured to determine, according to the probe request message, whether to feed back the probe response message to the terminal device.

Optionally, the foregoing probe request message further includes service indication information, where the service indication information includes at least one service information, where the service indication information is used to indicate, to the wireless access point, a service supported by the terminal device.

The processor 62 is specifically configured to: when the wireless access point identifies the indication information in the service set identifier field, and supports the service indicated by the at least one service information in the service indication information, feeding back the probe response message to the terminal device.

Further, the processor 62 is specifically configured to: when the wireless access point identifies the indication information in the service set identifier field, and supports the service indicated by the at least one service information of the service indication information in the information, The probe response message is fed back to the terminal device.

Optionally, the processor 62 is specifically configured to: when the wireless access point identifies the service set identifier The indication information in the identification field is fed back to the terminal device for the probe response message.

An embodiment of the present invention provides a terminal device. As shown in FIG. 7, the terminal device 7 includes: a transmitter 71, where

The transmitter 7 1 is configured to send a probe request message to the wireless access point, so that the wireless access point determines whether to feed back the probe response message to the terminal device according to the probe request message.

The terminal device provided by the embodiment of the present invention adds the indication information to the service set identifier field in the probe request message sent by the terminal device to the wireless access point, so that the wireless access point that the terminal device wants to find is identifying the indication information. The probe response message is sent back to the terminal device, and the other wireless access points do not feedback, thereby improving the utilization of the wireless network resource and reducing the power consumption of the terminal device.

It should be noted that the transmission in the terminal device in each of the above embodiments of the present invention For the implementation of the machine, reference may be made to the related description in the corresponding method embodiments.

An embodiment of the present invention provides a network system. As shown in FIG. 8, the network system 8 includes: a terminal device 81 and a wireless access point 82, where:

The terminal device 81 is configured to send a probe request message to the wireless access point 82, so that the wireless access point 82 determines, according to the probe request message, whether to feed back a probe response message to the terminal device 81. The service set identifier in the probe request message. The field contains indication information; the indication information is used to indicate to the wireless access point the type of wireless access point that the terminal device is to find.

The wireless access point 82 is configured to receive a probe request message sent by the terminal device 81; and determine, according to the probe request message, whether to feed back the probe response message to the terminal device 81.

Optionally, the foregoing indication information includes: a preset control character, a preset keyword, a preset symbol, a preset string, and a preset identifier.

The network system provided by the embodiment of the present invention adds the indication information to the service set identifier field in the probe request message sent by the terminal device to the wireless access point, so that the wireless access point that the terminal device wants to find is identifying the indication information. The probe response message is sent back to the terminal device, and the other wireless access points do not feedback, thereby improving the utilization of the wireless network resource and reducing the power consumption of the terminal device.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed The connection may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.

Further, in the devices and systems in the various embodiments of the present invention, each functional unit may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The above units may be implemented in the form of hardware or in the form of hardware plus software functional units.

All or part of the steps of implementing the above method embodiments may be performed by hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiments; The foregoing storage medium includes: a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. medium.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

claims

1. A wireless access point query method, characterized by including:

The wireless access point receives a detection request message sent by the terminal device; wherein the service set identification field in the detection request message contains indication information; the indication information is used to indicate to the wireless access point that the terminal device wants to find The type of wireless access point; the indication information includes: at least one of a preset control character, a preset keyword, a preset symbol, a preset string and a preset identification;

The wireless access point determines whether to feed back a detection response message to the terminal device according to the detection request message.

2. The method according to claim 1, characterized in that, the detection request message further includes service indication information, the service indication information includes at least one kind of service information, and the service indication information is used to provide the wireless access The entry point indicates the service that the terminal device wants to search for;

The wireless access point determines whether to feed back a detection response message to the terminal device according to the detection request message, which specifically includes:

When the wireless access point recognizes the indication information in the service set identification field and supports the service indicated by at least one service information in the service indication information in the detection request message, the wireless access point Feed back a detection response message to the terminal device.

3. The method according to claim 1, characterized in that, the service set identification field further includes service indication information, the service indication information includes at least one kind of service information, and the service indication information is used to provide the wireless The access point indicates the service that the terminal device wants to find;

When the wireless access point recognizes the indication information in the service set identification field and supports the service indicated by at least one service information of the service indication information in the service set identification field, the wireless access point Feed back a detection response message to the terminal device.

4. The method according to claim 1, wherein the wireless access point determines whether to feed back a detection response message to the terminal device according to the detection request message. include:

When the wireless access point recognizes the indication information in the service set identification field, the wireless access point feeds back a detection response message to the terminal device.

5. A wireless access point query method, characterized by including:

The terminal device sends a detection request message to the wireless access point, so that the wireless access point determines whether to feed back a detection response message to the terminal device according to the detection request message; wherein the service set identification field in the detection request message Contains indication information; The indication information is used to indicate to the wireless access point the type of wireless access point that the terminal device wants to find; The indication information includes: preset control characters, preset keywords, At least one of a preset symbol, a preset character string and a preset logo.

6. The method according to claim 5, characterized in that, the detection request message further includes service indication information; wherein the service indication information includes at least one kind of service information, and the service indication information is used to provide the wireless The access point indicates the service that the terminal device wants to find.

7. The method according to claim 5, wherein the service set identification field further includes service indication information; wherein the service indication information includes at least one kind of service information, and the service indication information is used to provide the service information to the service set identification field. The wireless access point indicates the service that the terminal device wants to search for.

8. A wireless access point, characterized by including:

An information receiving unit, configured to receive a detection request message sent by a terminal device; wherein the service set identification field in the detection request message contains indication information; and the indication letter is used to indicate the terminal device to the wireless access point The type of wireless access point to be searched; the indication information includes: at least one of a preset control character, a preset keyword, a preset symbol, a preset string and a preset identification;

Determining unit, configured to determine whether to feed back a detection response message to the terminal device according to the detection request message received by the information receiving unit.

9. The wireless access point according to claim 8, wherein the detection request message further includes service indication information, the service indication information includes at least one kind of service information, and the service indication information is used to provide the The wireless access point instructs the terminal device to Search business;

The determining unit is specifically configured to: when the wireless access point recognizes the indication information in the service set identification field and supports the service indicated by at least one service information in the service indication information in the detection request message. , the wireless access point feeds back a detection response message to the terminal device.

10. The wireless access point according to claim 8, wherein the service set identification field further includes service indication information, the service indication information includes at least one kind of service information, and the service indication information is used to provide The wireless access point indicates the service that the terminal device wants to find;

The determining unit is specifically configured to: when the wireless access point recognizes the indication information in the service set identification field and supports the service indicated by at least one service information of the service indication information in the service set identification field. , the wireless access point feeds back a detection response message to the terminal device.

1 1. The wireless access point according to claim 8, characterized in that: the determining unit is specifically configured to: when the wireless access point recognizes the indication information in the service set identification field, the The wireless access point feeds back a detection response message to the terminal device.

12. A terminal device, characterized by: including:

An information sending unit, configured to send a detection request message to the wireless access point, so that the wireless access point determines whether to feed back a detection response message to the terminal device according to the detection request message; wherein the service in the detection request message The set identification field contains indication information; the indication information is used to indicate to the wireless access point the type of wireless access point that the terminal device wants to find; the indication information includes: preset control characters, preset At least one of a keyword, a preset symbol, a preset character string and a preset identification.

13. The terminal device according to claim 12, wherein the detection request message further includes service indication information; wherein the service indication information includes at least one kind of service information, and the service indication information is used to provide the service indication information to the The wireless access point indicates the service that the terminal device wants to search for.

14. The terminal device according to claim 12, characterized in that: the service The set identification field also includes service indication information; wherein the service indication information includes at least one kind of service information, and the service indication information is used to indicate to the wireless access point the service that the terminal device wants to find.

15. A wireless access point, characterized by: including:

A receiver, configured to receive a detection request message sent by a terminal device; wherein the service set identification field in the detection request message contains indication information; the indication information is used to indicate to the wireless access point that the terminal device wants to find The type of wireless access point; the indication information includes: at least one of a preset control character, a preset keyword, a preset symbol, a preset string and a preset identification;

A processor, configured to determine whether to feed back a detection response message to the terminal device according to the detection request message.

16. The wireless access point according to claim 15, wherein the detection request message further includes service indication information, the service indication information includes at least one kind of service information, and the service indication information is used to provide the The wireless access point indicates the service that the terminal device wants to find;

The processor is specifically configured to: when the wireless access point identifies the indication information in the service set identification field and supports the service indicated by at least one service information in the service indication information in the detection request message. , the wireless access point feeds back a detection response message to the terminal device.

17. The wireless access point according to claim 15, wherein the service set identification field further includes service indication information, the service indication information includes at least one kind of service information, and the service indication information is used to provide The wireless access point indicates the service that the terminal device wants to find;

The processor is specifically configured to: when the wireless access point recognizes the indication information in the service set identification field and supports the service indicated by at least one service information of the service indication information in the service set identification field. , the wireless access point feeds back a detection response message to the terminal device.

18. The wireless access point according to claim 15, characterized in that: the processor is specifically configured to: when the wireless access point identifies the service set identifier When receiving the indication information in the recognition field, the wireless access point feeds back a detection response message to the terminal device.

19. A terminal device, characterized by: including:

A transmitter, configured to send a detection request message to a wireless access point, so that the wireless access point determines whether to feed back a detection response message to the terminal device according to the detection request message; wherein the service set in the detection request message The identification field contains indication information; the indication information is used to indicate to the wireless access point the type of wireless access point that the terminal device wants to find; the indication information includes: a preset control character, a preset key At least one of a word, a preset symbol, a preset character string and a preset logo.

20. The terminal device according to claim 19, wherein the detection request message further includes service indication information; wherein the service indication information includes at least one kind of service information, and the service indication information is used to provide the service indication information to the The wireless access point indicates the service that the terminal device wants to search for.

21. The terminal device according to claim 19, wherein the service set identification field further includes service indication information; wherein the service indication information includes at least one kind of service information, and the service indication information is used to provide The wireless access point indicates the service that the terminal device wants to search for.

22. A network system, characterized in that it includes: a wireless access point and a terminal device, the wireless access point is any wireless access point described in claims 8 to 1 1, and the terminal device is Any terminal device according to claims 12 to 14; or, the wireless access point is any wireless access point according to claims 15 to 18, and the terminal device is any wireless access point according to claims 19 to 21 any terminal device.