CN102684844B - Beacon frame sending method, Beacon frame receiving method, access point (AP) and wireless client - Google Patents
Beacon frame sending method, Beacon frame receiving method, access point (AP) and wireless client Download PDFInfo
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Abstract
The invention discloses a Beacon frame sending method, which comprises the following steps that: an access point (AP) receives control messages issued by an access controller, and the control messages comprise information of at least two wireless services; the AP uses the information of at least two wireless services for a configuring type length value (TLV) and individual fields aiming at wireless services in a Beacon frame for forming the Beacon frame comprising at least two wireless services, and the TLV is used for indicating the deflection quantity of base media access control (MAC) of each wireless service aiming at the Beacon frame and the deflection position of the individual field of each wireless service in the Beacon frame; and the AP sends the Beacon frame to a wireless client. The invention also discloses a Beacon frame receiving method, which comprises the following steps that: the wireless client receives the Beacon frame, the basic service identification code corresponding to each wireless service is analyzed according to the TLV, the individual field corresponding to each wireless service is read, a public field is read, and the information of several wireless services in the Beacon frame is obtained. The invention also discloses the AP and the wireless client. The efficiency of the Beacon frame for issuing the wireless services can be improved.
Description
Technical field
The application relates to wlan technologies field, particularly relates to sending, receiving method and access point AP, the wireless client of Beacon frame.
Background technology
As shown in Figure 1, in WLAN, all communications all must pass through AP(Access Point, access point), AP is responsible for sending Beacon frame (beacon frame), be used for declaring the existence of certain wireless network, Beacon frame in one's power scope is basic service region (Basic Service Set).
Beacon is a kind of wireless management frame of broadcast, wireless client Station is regularly sent to by AP, each Beacon frame carries the information of the wireless service that AP issues, after wireless client receives described Beacon frame, parse the wireless service information of carrying in Beacon frame, and on send operating system, user selects wireless service to connect as required.
At present, the send mode of Beacon frame is: each Beacon frame only carries a wireless service information, when AP will issue multiple wireless service, then need once to send multiple Beacon frame, have certain time interval between frame and frame, the described time interval can be adjusted or manual adjustments automatically by system.
Therefore, when AP will issue multiple wireless service, need the frame of transmission more, the transmission time interval between frame to frame is corresponding to diminish, and sends pressure increase, and can produce interference mutually; AP equipment needs continuous competitive channel to send Beacon frame, occupies longer channel time, and impact is local sends other messages; Meanwhile, in order to ensure searching whole wireless services, wireless client, when carrying out wireless service scanning, needs long period monitoring and controlling channels, resolves multiple Beacon frame, makes wireless client resolve the inefficiency of Beacon frame acquisition wireless service information.
Summary of the invention
In view of this, the application proposes sending, receiving method and access point AP, the wireless client of Beacon frame, can improve access point AP uses Beacon frame to issue the efficiency of wireless service, reduce Channel holding time and message transmission interference, improve wireless client and resolve the efficiency that Beacon frame obtains wireless service information.
For achieving the above object, the technical scheme of the embodiment of the present application is achieved in that
A sending method for Beacon frame, comprises the following steps:
Access point AP receives the control message that access controller issues, and includes the information of at least two wireless services in described control message;
AP utilizes the information of at least two wireless services obtained from above-mentioned control message, for the individual character field of wireless service and type lengths values TLV in configuration Beacon frame, form the Beacon frame including at least two wireless services, wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service;
Described Beacon frame is sent to wireless client by AP.
Receive a method for Beacon frame, comprise the following steps:
Wireless client receives the Beacon frame that can carry multiple wireless service information, basic service identification code BSSID corresponding to each wireless service is parsed according to type lengths values TLV in described Beacon frame, read the individual character field ability information Capability Info that each wireless service is corresponding, Services Composition identification code SSID, strengthen secure network Robust Security network, and read except BSSID, Capability Info, SSID, each field beyond Robust Security network, get the information of multiple wireless service in described Beacon frame, wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service.
A kind of access point AP, comprising: information receiving module, Beacon frame generation module and information sending module, wherein:
Information receiving module, for receiving the control message that access controller issues, including the information of at least two wireless services, described control message is sent to Beacon frame generation module in described control message;
Beacon frame generation module, for utilizing the information of at least two wireless services obtained from above-mentioned control message, for the individual character field of wireless service and type lengths values TLV in configuration Beacon frame, form the Beacon frame including at least two wireless services, wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service;
Information sending module, for receiving the Beacon frame from Beacon frame generation module, is sent to wireless client by described Beacon frame.
A kind of wireless client, comprising: Beacon frame receiver module, Beacon frame parsing module, wireless service data obtaining module, wherein:
Beacon frame receiver module, for receiving the Beacon frame that can carry multiple wireless service information, and sends it to Beacon frame parsing module;
Beacon frame parsing module, for parsing basic service identification code BSSID corresponding to each wireless service according to type lengths values TLV in described Beacon frame, read the individual character field ability information Capability Info that each wireless service is corresponding, Services Composition identification code SSID, strengthen secure network RobustSecurity network, and read except BSSID, Capability Info, SSID, each field beyond Robust Securitynetwork, the information of described parsing and reading is sent to wireless service data obtaining module, wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service,
Wireless service data obtaining module, for receiving the information from Beacon frame read module, gets the information of multiple wireless service in described Beacon frame.
The beneficial effect of the application is, by using a kind of Beacon frame, all wireless services that same for AP radio frequency will be issued are integrated in a Beacon frame, reduce the Beacon number of frames needing to send, simultaneously, carry out driving to wireless client to upgrade, ensure that wireless client can resolve described Beacon frame, thus the efficiency that AP uses Beacon frame issue wireless service can be improved, reduce Channel holding time and to the interference sending message, improve wireless client and resolve the efficiency that Beacon frame obtains wireless service information.
Accompanying drawing explanation
Fig. 1 is the Beacon frame send mode schematic diagram of prior art;
Fig. 2 is a method flow diagram of the embodiment of the present application;
Fig. 3 is each field format schematic diagram in the Beacon frame of prior art;
Fig. 4 is the TLV message format schematic diagram of the embodiment of the present application;
Fig. 5 is the another method flow diagram of the embodiment of the present application;
Fig. 6 is the field format schematic diagram of the Beacon frame of the embodiment of the present application;
Fig. 7 is a structure drawing of device of the embodiment of the present application;
Fig. 8 is the another structure drawing of device of the embodiment of the present application;
Fig. 9 is the Beacon frame process chart of the wireless client of the embodiment of the present application.
Embodiment
In order to make the object of the application, technical scheme and advantage clearly understand, below by way of specific embodiment and see accompanying drawing, the application is described in detail.
The application is by using a kind of Beacon frame, all wireless services that same for AP radio frequency will be issued are integrated in a Beacon frame, reduce the Beacon number of frames needing to send, simultaneously, carry out driving to wireless client to upgrade, ensure that wireless client can resolve described Beacon frame, only resolve all wireless service information on a same radio frequency of Beacon frame quick obtaining AP.So, can improve AP uses Beacon frame to issue the efficiency of wireless service, reduce Channel holding time and to the interference sending message, improve wireless client and resolve the efficiency that Beacon frame obtains wireless service information, allow wireless client find all wireless services that AP issues as early as possible.
As shown in Figure 2, a kind of sending method of Beacon frame, comprises the following steps one method flow of the embodiment of the present application:
Step 201: access point AP receives the control message that access controller issues, includes the information of at least two wireless services in described control message.
Access controller AC set up by universal tunnel agreement CAPWAP agreement and AP control, data tunnel, can realize the unified control and management to all AP, the control message including at least two wireless services is handed down to AP by AC.
Step 202:AP utilizes the information of at least two wireless services obtained from above-mentioned control message, for the individual character field of wireless service and type lengths values TLV in configuration Beacon frame, form the Beacon frame including at least two wireless services, wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service.
Below in order to the structure of Beacon frame is described, need first simply to introduce the field of Beacon frame in prior art.
As Fig. 3, show each field that Beacon frame uses successively, comprising: the head MAC header of Beacon frame, variable V ariable and FCS.
In Beacon frame field listed by Fig. 3, the field relevant to wireless service is BSSID, Capability Info, SSID, Robust Security network(RSN), be designated as individual character field, remaining field is the information field for AP and type of message, be designated as public field, public field only occurs once, and all wireless services are shared.Individual character field is:
BSSID: basic service identification code.
Capability Info: ability information, notices wireless service and possesses which kind of performance.
SSID: Services Composition identification code is exactly popular service name.
Robust Security network(RSN): strengthen secure network, be used for strengthening the fail safe of wireless service.
Relative to prior art, a type lengths values TLV is added in the Beacon frame of the application, described TLV is between the head MAC header and variable V ariable of Beacon frame, and described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service.Relation between each field that TLV comprises and the above-mentioned individual character field for wireless service will be described below.
As shown in Figure 4, in TLV, following field is comprised: element identification codes Element ID, length of element Length, bit map Bitmap, side-play amount Offset;
The number of bits of field Bitmap sets in Default Value, and the corresponding wireless service of each bit of Bitmap field, from low level to a high position, often increases a wireless service, the bit position 1 of its correspondence;
Arbitrary wireless service correspond to the N number of put 1 bit, this wireless service is exactly N for the side-play amount of base MAC, and the initial value of N is 0; According to each wireless service in Bitmap field for the side-play amount of base MAC, the base MAC that the BSSID in Beacon frame carries is offset, generates the value of field BSSID corresponding to each wireless service.Namely by each wireless service in Bitmap field for the side-play amount of base MAC, add and just can obtain the value of field BSSID corresponding to each wireless service by the base MAC that the BSSID in Beacon frame carries.
Such as: Bitmap, value 0,000 0,000 0,000 0111, always have 16 bits, represent and can carry at most 16 wireless service information, wherein from low level to a high position, only have three bit positions 1 successively, represent in Beacon frame and carry 3 wireless service information Service1, Service2, Service3, side-play amount for base MAC is respectively 0, 1, 2, if base MAC is 0027-0010-0020, then Service1, Service2, the basic service identification code BSSID that Service3 is corresponding is respectively 0027-0010-0020, 0027-0010-0021, 0027-0010-0022.
Utilize the information of at least two wireless services obtained from described control message, for individual character field Capability Info, SSID, Robust Security network of wireless service in configuration Beacon frame.
As preferred embodiment, can by arranged together for individual character field Capability Info, SSID, Robust Security network of same wireless service; In the prior art, as shown in Figure 3, this three fields not necessarily is arranged together, but in the embodiment of the present application, for ease of the deviation post of individual character field in Beacon frame indicating each wireless service corresponding, by arranged together for these three fields.So, only need the original position knowing these three fields, just can read the information of whole three fields.
Field Offset indicates the deviation post of individual character field Capability Info, SSID, Robust Security network in Beacon frame of each wireless service; The original position of skew is counted from last byte of TLV, or counts from the head of Beacon frame.
The value of field Length is the length sum of field Bitmap and field Offset;
Basic service identification code BSSID in Beacon frame only carries base MAC, in prior art, because Beacon frame only carries the information of a wireless service, therefore, and the base MAC side-play amount of this wireless service that what BSSID field was directly carried is.
Described Beacon frame is sent to wireless client by step 203:AP.
Described Beacon frame is sent to wireless client by AP, so that wireless client parses the information of at least two wireless services from described Beacon frame, and in prior art, wireless client can only parse the information of a wireless service from Beacon frame.
Therefore, adopt the application's method, AP can be improved and use Beacon frame to issue the efficiency of wireless service, reduce Channel holding time and to the interference sending message, also can improve wireless client and resolve the efficiency that Beacon frame obtains wireless service information.
In addition, access point AP can also receive the sending mode configuration item that access controller AC issues, and sending mode configuration item is configured sending mode, and the sending mode that AP can be configured according to sending mode configuration item sends described Beacon frame, there are three kinds of sending mode configuration modes, comprise:
1. force to send Beacon frame, old-fashioned Beacon frame stops sending;
2. compatibility mode, in order to the wireless client that compatibility is not upgraded, the AP under this pattern not only sends Beacon frame, and take into account the old-fashioned Beacon frame of transmission, but the transmission interval of old-fashioned Beacon frame will become greatly, such as, normal 2 times of sending interval can be set to, also can adjust according to actual needs.Under this kind of pattern, wireless client can resolve some old-fashioned Beacon frames more, but owing to having been tuned up by the transmission time interval of old-fashioned Beacon frame, can not increase extra burden to wireless client.
When the wireless client receiving AP information is all the wireless client of having upgraded, when possessing the ability of resolving Beacon frame, the can be adopted 1. to plant configuration mode.
When in the wireless client receiving AP information, some is the wireless client of having upgraded, when possessing the ability of resolving Beacon frame, the can be adopted 2. to plant configuration mode.
If the wireless client receiving AP information is all the wireless client not having to upgrade, Beacon frame cannot be resolved, following configuration mode can be adopted:
3. force to send old-fashioned Beacon frame, Beacon frame stops sending.
As shown in Figure 5, a kind of method receiving Beacon frame described above, comprises the following steps the another method flow of the embodiment of the present application:
Step 501: wireless client receives the Beacon frame that can carry multiple wireless service information.
Described Beacon frame is as described in step 202.
Step 502: parse basic service identification code BSSID corresponding to each wireless service according to type lengths values TLV in described Beacon frame.
Wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service.
In Beacon frame TLV Bitmap field in, arbitrary wireless service correspond to the N number of put 1 bit, this wireless service is exactly N for the side-play amount of base MAC, and N is counted from 0.
By the side-play amount of each wireless service for base MAC, be added with the base MAC of Beacon frame, obtain the value of field BSSID corresponding to each wireless service;
Such as: Bitmap, value 0,000 0,000 0,000 0111, represent in Beacon frame and carry 3 wireless service information Service1, Service2, Service3,3 wireless services are respectively 0,1,2 for the side-play amount of base MAC, if base MAC is 0027-0010-0020, then the BSSID that Service1, Service2, Service3 are corresponding is respectively 0027-0010-0020,0027-0010-0021,0027-0010-0022.
Step 503: read each wireless service corresponding individual character field ability information Capability Info, Services Composition identification code SSID, strengthen secure network Robust Security network, and read each field except BSSID, Capability Info, SSID, Robust Security network.
According to the deviation post indicated by the side-play amount Offset of TLV in Beacon frame, read individual character field Capability Info, SSID, Robust Security network that each wireless service described is corresponding.
Then the public field read in Beacon frame except field BSSID, Capability Info, SSID, RobustSecurity network then.
Step 504: the information getting multiple wireless service in described Beacon frame.
The information of each wireless service comprises: field BSSID, Capability Info, SSID, RobustSecurity network and the information corresponding to public field.
In practical application, after getting the information of at least two wireless services, operating system can be sent above, so that user selects wireless service to connect according to actual needs.And in prior art, wireless client can only parse the information of a wireless service from Beacon frame.
Therefore, adopt the application's method, also can improve wireless client and resolve the efficiency that Beacon frame obtains wireless service information.
Below the method for sending and receiving of above-mentioned Beacon frame is illustrated again.
The radio frequency 1 of current AP needs issue 3 wireless services altogether in section sometime, and be respectively Service1, Service2, Service3, the base MAC of radio frequency 1 is 0027-0010-0020.Wireless client Station supports that Beacon frame is resolved.
By to be released for AP 3 wireless service information integerated in a Beacon frame, form Beacon frame, then access point AP sends to the Beacon frame of wireless client as shown in Figure 6, composition graphs 4, in the TLV of Beacon frame:
Element id field and Length field length are 8bits, Bitmap field length be 16bits, Offset is that 24bits, Offset field length can be determined according to the number of wireless service;
Length, value 0,000 0101, representing follow-up Bitmap and Offset sum length is 5 bytes (40bits);
Bitmap, value 0,000 0,000 0,000 0111, represent in Beacon frame and carry 3 wireless service information (16 wireless service information can be carried at most), side-play amount for base MAC is respectively 0,1,2, and the basic service identification code BSSID of corresponding Service1, Service2, Service3 is respectively 0027-0010-0020,0027-0010-0021,0027-0010-0022;
Offset, value is xxxxxxxx yyyyyyyy zzzzzzzz, and owing to there are 3 wireless services, each service takies 8bits and indicates side-play amount, then length is 8 × 3=24bits.
After wireless client receives described Beacon frame, resolve described Beacon frame, first, read three basic service identification code BSSID serving Service1, Service2, Service3 corresponding and be respectively 0027-0010-0020,0027-0010-0021,0027-0010-0022, according to the individual character field reading three wireless services in the deviation post indicated by side-play amount Offset to Beacon frame, individual character field is placed on the back of all public field usually, arranges as follows:
|Capability Info for Service1|SSID for Service1|RSN for Service1|Capability Info for Service2|SSID for Service2|RSN for Service2|CapabilityInfo for Service3|SSID for Service3|RSN for Service3|
Above-mentioned three individual character fields of each wireless service can be arranged together, but the individual character field of different radio service differ establish a capital arranged together, can spaced apart.
Read the public field in Beacon frame, so far wireless client has parsed all the elements of 3 wireless services, then submits operating system in the lump and is shown to user, and user selects wireless service to connect as required.
As shown in Figure 7, a kind of access point AP, comprising one apparatus structure of the embodiment of the present application: information receiving module, Beacon frame generation module and information sending module, wherein:
Information receiving module, for receiving the control message that access controller issues, including the information of at least two wireless services, described control message is sent to Beacon frame generation module in described control message.
Beacon frame generation module, for utilizing the information of at least two wireless services obtained from above-mentioned control message, for the individual character field of wireless service and type lengths values TLV in configuration Beacon frame, form the Beacon frame including at least two wireless services, described Beacon frame is sent to information sending module, wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service.
Described TLV is between the head MAC header and variable V ariable of Beacon frame.
Following field is configured: element identification codes Element ID, length of element Length, bit map Bitmap, side-play amount Offset in TLV;
Configure the number of bits of Bitmap field when dispatching from the factory, the corresponding wireless service of each bit, from low level to a high position, often increases a wireless service, the bit position 1 of its correspondence; Arbitrary wireless service correspond to the N number of put 1 bit, the side-play amount of this wireless service is exactly N, and N is counted from 0;
Utilize the information of at least two wireless services obtained from described control message, for individual character field Capability Info, SSID, Robust Security network of wireless service in configuration Beacon frame, can by arranged together for individual character field Capability Info, SSID, Robust Security network of same wireless service;
Field Offset indicates the deviation post of individual character field Capability Info, SSID, Robust Security network in Beacon frame of each wireless service, the original position of skew is counted from last byte of TLV, or counts from the head of Beacon frame;
The value of field Length is the length sum of field Bitmap and field Offset;
Basic service identification code BSSID in Beacon frame only carries base MAC.
Information sending module, for receiving the Beacon frame from Beacon frame generation module, is sent to wireless client by described Beacon frame.
As shown in Figure 8, a kind of wireless client, comprising the another apparatus structure of the embodiment of the present application: Beacon frame receiver module, Beacon frame parsing module, wireless service data obtaining module, wherein:
Beacon frame receiver module, for receiving the Beacon frame that can carry multiple wireless service information, and sends it to Beacon frame parsing module.
Beacon frame parsing module, for parsing basic service identification code BSSID corresponding to each wireless service according to type lengths values TLV in described Beacon frame, read the individual character field ability information Capability Info that each wireless service is corresponding, Services Composition identification code SSID, strengthen secure network RobustSecurity network, and read except BSSID, Capability Info, SSID, each field beyond Robust Securitynetwork, the information of described parsing and reading is sent to wireless service data obtaining module, wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service.
In Beacon frame TLV Bitmap field in, arbitrary wireless service correspond to the N number of put 1 bit, this wireless service is exactly N for the side-play amount of base MAC, and N is counted from 0.
By the side-play amount of each wireless service for base MAC, be added with the base MAC of Beacon frame, obtain the value of field BSSID corresponding to each wireless service;
According to the deviation post indicated by the side-play amount Offset of TLV in Beacon frame, read individual character field Capability Info, SSID, Robust Security network that each wireless service described is corresponding.
Wireless service data obtaining module, for receiving the information from Beacon frame read module, gets the information of multiple wireless service in described Beacon frame.
In prior art, wireless client cannot resolve the Beacon frame in the application, therefore, Beacon frame can be resolved to make wireless client, wireless client needs to upgrade and drives, the wireless service information chip of wireless client all can correctly being parsed when receiving old-fashioned Beacon frame and Beacon frame carry and on send operating system.
Upgrade the handling process of wireless client when receiving a Beacon frame that drive as shown in Figure 9:
When wireless client receives Beacon frame, resolve described Beacon frame, judge whether the TLV that there is Beacon frame,
If existed, then in Beacon frame, decomposite multiple wireless service after understanding TLV, above send operating system to be shown to user, user selects wireless service to connect as required;
If there is no, then by the process of old-fashioned Beacon frame, analyze a wireless service, above send operating system to be shown to user, user selects wireless service to connect as required.
Therefore, further, described wireless client, frame identification module can also be comprised, for receiving the Beacon frame that AP sends, judge whether there is TLV in described Beacon frame, when there is TLV in described Beacon frame, determine that this Beacon frame is Beacon frame, the described Beacon frame including TLV is sent to Beacon frame receiver module.
The application is by using a kind of Beacon frame, and make it can issue multiple wireless service, meanwhile, the driving of renewal makes wireless client can parse multiple wireless service according to TLV in a Beacon frame.So, can improve AP uses Beacon frame to issue the efficiency of wireless service, reduce Channel holding time and to the interference sending message, improve wireless client and resolve the efficiency that Beacon frame obtains wireless service information, so that user efficiently selects wireless service to connect.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, within all spirit in the application and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the application protects.
Claims (6)
1. a sending method for Beacon frame, is characterized in that, comprises the following steps:
Access point AP receives the control message that access controller issues, and includes the information of at least two wireless services in described control message;
AP utilizes the information of at least two wireless services obtained from above-mentioned control message, for the individual character field ability information Capability Info of wireless service in configuration Beacon frame, Services Composition identification code SSID, strengthen secure network Robust Security network and type lengths values TLV, form the Beacon frame including at least two wireless services, wherein, described TLV is between the head MAC header and variable V ariable of described Beacon frame, the field configured in described TLV comprises: element identification codes Element ID, length of element Length, bit map Bitmap, side-play amount Offset field, the corresponding wireless service of each bit of described field Bitmap, from low level to a high position, often increase a wireless service, the bit position 1 that the wireless service of this increase is corresponding, described field Offset indicates the individual character field Capability Info of each wireless service, SSID, the deviation post of Robust Security network in described Beacon frame, the value of described field Length is the length sum of field Bitmap and field Offset,
Described Beacon frame is sent to wireless client by AP.
2. method according to claim 1, it is characterized in that, described field Offset indicates the deviation post of individual character field Capability Info, SSID, Robust Security network in described Beacon frame of each wireless service, the original position of skew is counted from last byte of TLV, or counts from the head of Beacon frame.
3. receive a method for Beacon frame, it is characterized in that, comprise the following steps:
Wireless client receives the Beacon frame that can carry multiple wireless service information, according to arbitrary wireless service in the Bitmap field of TLV in described Beacon frame correspond to the N number of put 1 bit, determine that this wireless service is N for the side-play amount of the base MAC of Beacon frame, the initial value of N is 0, by the side-play amount of each wireless service for the base MAC of Beacon frame, be added with the base MAC of Beacon frame, obtain the basic service identification code BSSID that each wireless service is corresponding, according to the deviation post indicated by the side-play amount Offset of described TLV, read the individual character field ability information Capability Info that each wireless service is corresponding, Services Composition identification code SSID, strengthen secure network Robust Security network, and read except BSSID, Capability Info, SSID, each field beyond Robust Security network, get the information of multiple wireless service in described Beacon frame, wherein, described TLV is used to indicate the side-play amount of each wireless service for the base MAC of Beacon frame and the deviation post of individual character field in Beacon frame of each wireless service.
4. an access point AP, is characterized in that, comprising: information receiving module, Beacon frame generation module and information sending module, wherein:
Information receiving module, for receiving the control message that access controller issues, including the information of at least two wireless services, described control message is sent to Beacon frame generation module in described control message;
Beacon frame generation module, for utilizing the information of at least two wireless services obtained from above-mentioned control message, for the individual character field ability information Capability Info of wireless service in configuration Beacon frame, Services Composition identification code SSID, strengthen secure network Robust Security network and type lengths values TLV, form the Beacon frame including at least two wireless services, wherein, described TLV is between the head MAC header and variable V ariable of described Beacon frame, the field configured in described TLV comprises: element identification codes Element ID, length of element Length, bit map Bitmap, side-play amount Offset field, the corresponding wireless service of each bit of described field Bitmap, from low level to a high position, often increase a wireless service, the bit position 1 that the wireless service of this increase is corresponding, described field Offset indicates each wireless service for the side-play amount of the base MAC of Beacon frame, described field Offset is used to indicate the individual character field Capability Info of each wireless service, SSID, the deviation post of Robust Security network in described Beacon frame, the value of described field Length is the length sum of field Bitmap and field Offset,
Information sending module, for receiving the Beacon frame from Beacon frame generation module, is sent to wireless client by described Beacon frame.
5. access point AP according to claim 4, it is characterized in that, described Beacon frame generation module, the deviation post of individual character field Capability Info, SSID, Robust Security network in described Beacon frame of each wireless service is also indicated for arranging field Offset, the original position of skew is counted from last byte of TLV, or counts from the head of Beacon frame.
6. a wireless client, is characterized in that, comprising: Beacon frame receiver module, Beacon frame parsing module, wireless service data obtaining module, wherein:
Beacon frame receiver module, for receiving the Beacon frame that can carry multiple wireless service information, and sends it to Beacon frame parsing module;
Beacon frame parsing module, for arbitrary wireless service in the Bitmap field according to TLV in described Beacon frame correspond to the N number of put 1 bit, determine that this wireless service is N for the side-play amount of the base MAC of Beacon frame, the initial value of N is 0, by the side-play amount of each wireless service for the base MAC of Beacon frame, be added with the base MAC of Beacon frame, obtain the basic service identification code BSSID that each wireless service is corresponding, according to the deviation post indicated by the side-play amount Offset of described TLV, read the individual character field ability information Capability Info that each wireless service is corresponding, Services Composition identification code SSID, strengthen secure network Robust Security network, and read except BSSID, Capability Info, SSID, each field beyond RobustSecurity network, the information of described parsing and reading is sent to wireless service data obtaining module,
Wireless service data obtaining module, for receiving the information from Beacon frame parsing module, gets the information of multiple wireless service in described Beacon frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210185615.7A CN102684844B (en) | 2012-06-05 | 2012-06-05 | Beacon frame sending method, Beacon frame receiving method, access point (AP) and wireless client |
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| CN201210185615.7A CN102684844B (en) | 2012-06-05 | 2012-06-05 | Beacon frame sending method, Beacon frame receiving method, access point (AP) and wireless client |
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| CN102684844A CN102684844A (en) | 2012-09-19 |
| CN102684844B true CN102684844B (en) | 2015-02-18 |
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| CN103731928B (en) * | 2012-10-15 | 2017-11-17 | 华为技术有限公司 | Parameter information sending method and equipment |
| CN103281783B (en) * | 2013-05-15 | 2016-01-13 | 上海寰创通信科技股份有限公司 | Based on AP resource allocation management and the restoration methods of bitmap |
| CN105591797B (en) * | 2015-07-21 | 2019-01-22 | 新华三技术有限公司 | AP equipment information collection method and device |
| CN111935681A (en) * | 2019-05-13 | 2020-11-13 | 阿里巴巴集团控股有限公司 | Intelligent equipment network configuration implementation system, method and equipment |
| CN114788309A (en) * | 2019-11-07 | 2022-07-22 | 交互数字专利控股公司 | Distributing service information |
| CN114125725B (en) * | 2020-08-31 | 2022-10-11 | Oppo广东移动通信有限公司 | Broadcast message sending method, broadcast message receiving method, broadcast message sending device, broadcast message receiving device, and storage medium |
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| CN101583158A (en) * | 2009-07-02 | 2009-11-18 | 杭州华三通信技术有限公司 | Control method for terminal access and control equipment |
| CN102437897A (en) * | 2011-11-11 | 2012-05-02 | 杭州华三通信技术有限公司 | Method and device for sending Beacon |
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| CN101583158A (en) * | 2009-07-02 | 2009-11-18 | 杭州华三通信技术有限公司 | Control method for terminal access and control equipment |
| CN102437897A (en) * | 2011-11-11 | 2012-05-02 | 杭州华三通信技术有限公司 | Method and device for sending Beacon |
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