CN103781153A - Definition method of element field and device - Google Patents

Abstract

The embodiment of the present invention discloses a method and device for defining an element field, which relates to the field of communication technology. The method includes: adding the number of beacons to the element field or adding the number of beacons and the target site, wherein the number of beacons is used In order to indicate the number of beacon frame periods between the reception of the beacon frame to which the element field belongs and the occurrence of the triggered event, the element field is the element identification number, length, and triggered event from the beginning to the end of the field Content; broadcast the beacon frame carrying the element field. The invention is applicable to the interaction between the access point and the station in the wireless local area network system.

Description

Method and device for defining element field

technical field

The invention relates to the field of communication technology, in particular to a method and device for defining an element field.

Background technique

In a wireless local area network system, an access point (Access Point, English abbreviated as AP) periodically broadcasts a beacon frame to the stations associated with itself, and carries some management information or control information in the beacon frame. The station will analyze the element fields of the received beacon frame, and after obtaining the management information or control information, the station will trigger the corresponding action.

Take the Traffic Indication Map (TIM) field in the beacon frame as an example. The TIM field is used to indicate which stations with the power saving function enabled have downlink data in the current beacon frame period. These stations analyze the TIM field in the beacon frame, and after determining that there is their own downlink data in the current beacon frame period, the station will send a power saving query (PowerSave Poll, English abbreviation: PS-Poll) frame to the access point through the uplink , the access point sends downlink data to the station after receiving the PS-Poll frame. If within the current beacon frame period, all stations associated with the AP have no downlink data, no TIM indication is performed or the indicated value is 0.

There are at least the following problems in the prior art: In some special scenarios, taking the sensor network as an example, the user’s business cycle is very long, reaching several hours or several days, and there will be no downlink during the entire beacon frame period. data, but the station is not sure whether the current beacon frame contains its own data, so it still needs to wake up frequently to check the beacon frame; in the 802.11ah scenario, an AP may provide services for more than 6000 stations , in order to avoid information collision between stations, these stations should be divided into multiple groups, and the AP broadcasts beacon frames in units of groups. In this case, a station belonging to a certain group is not sure whether the current beacon frame contains its own data, so it still needs to wake up frequently to check the beacon frame. In the above two scenarios, the site needs to wake up frequently to check the beacon frame, which will waste a lot of power for the non-power supply site.

Contents of the invention

A method and device for defining an element field are provided, which can solve the problem of power waste in a site not powered by a power supply in a specific scenario, and improve the power utilization efficiency of the site.

In the first aspect, a method for defining element fields is provided, including:

Adding the number of beacons or adding the number of beacons and the target station to the element field, wherein the number of beacons is used to indicate the interval between the station receiving the beacon frame to which the element field belongs and the occurrence of the triggered event. The number of cycles, the element field from the field head to the end of the field is the element identification number, length and the content of the triggered event;

A beacon frame carrying the element field is broadcast.

Optionally, adding the number of beacons to the element field or adding the number of beacons and the target station includes: when the content of the triggered event included in the element field is applied to all stations associated with the access point AP, for all Add the number of beacons to the element field; when the content of the triggered event included in the element field is applied to a specific site associated with the AP, add the number of beacons and the target site to the element field, and the target site is used to indicate The specific site detects and responds to the content of the triggered event, and other sites other than the specific site ignore the content of the triggered event.

Wherein, when only the number of beacons is added to the element field, the element field may be the element identification number, length, number of beacons, and the content of the triggered event in sequence from the field head to the end of the field; when the element field When the number of beacons and the target site are added to the field, the element field may be the element identification number, length, target site, number of beacons, and the content of the triggered event in sequence from the head to the end of the field.

Wherein, the content of the triggered event includes: downlink data transmission and/or uplink data transmission.

Wherein, the content of the number of beacons includes: a natural number; the content of the target site includes: a site group number, a user-associated identity number (Identity, the English abbreviation is ID) or Media Access Control (Media Access Control, the English abbreviation is MAC) address.

In the second aspect, the definition method of the same element field includes:

The element identification number of the element field is redefined as an element type identification number and a sub-element identification number, and the content represented by the redefined element field is jointly determined by the element type identification number and the sub-element identification number;

A beacon frame carrying the element field is broadcast.

In the first possible implementation manner, when the beacon frame contains multiple element fields belonging to the same element type, put the multiple element fields under the same element type identification number as sub-element fields for indication .

Combining with the second aspect or the first possible implementation of the second aspect, in the second possible implementation, the redefined element fields from the field header to the field tail are: element type identification number, total length, Sub-element identification number 1, length 1, up to sub-element identification number n, length n, sub-element content n, where n is the total number of element fields belonging to the same element type.

In a third aspect, a device for defining an element field is provided, including:

The adding unit is used to add the number of beacons to the element field or add the number of beacons and the target station, wherein the number of beacons is used to indicate the period from when the station receives the beacon frame to which the element field belongs to when the triggered event occurs The number of beacon frame periods at intervals, the element field from the field head to the field end is the element identification number, length and the content of the triggered event in sequence;

The broadcasting unit is configured to broadcast the beacon frame carrying the element field.

Optionally, the adding unit includes: a first adding subunit, configured to add information to the element field when the content of the triggered event included in the element field is applied to all stations associated with the access point AP. The number of targets; the second adding subunit is used to add the number of beacons and the target site to the element field when the content of the triggered event included in the element field is applied to a specific site associated with the AP, and the target site It is used to instruct the specific site to detect and respond to the content of the triggered event, and other sites other than the specific site ignore the content of the triggered event.

Wherein, when the first adding subunit adds the number of beacons to the element field, the element field is the element identification number, length, number of beacons, and the content of the triggered event in sequence from the field head to the end of the field; When the second adding subunit adds the number of beacons and the target site to the element field, the element field is the element identification number, length, target site, and number of beacons in sequence from the field head to the end of the field and the content of the triggered event.

Wherein, the content of the triggered event includes: downlink data transmission and/or uplink data transmission.

Wherein, the content of the number of beacons includes: a natural number; the content of the target site includes: a site group number, a user-associated identification number ID or a media access control MAC address.

In a fourth aspect, a device for defining an element field is provided, including:

The redefinition unit is used to redefine the element identification number of the element field into an element type identification number and a sub-element identification number, and the content represented by the redefined element field is jointly determined by the element type identification number and the sub-element identification number;

The broadcasting unit is configured to broadcast the beacon frame carrying the element field.

In a first possible implementation manner, it further includes: an indication unit, configured to place the multiple element fields in the same element type identifier when the beacon frame contains multiple element fields belonging to the same element type Indicated as a sub-element field under the number.

In combination with the fourth aspect or the first possible implementation of the fourth aspect, in the second possible implementation, the redefined element fields are in order from the field head to the field end: element type identification number, total length, Sub-element identification number 1, length 1, up to sub-element identification number n, length n, sub-element content n, where n is the total number of element fields belonging to the same element type.

Compared with the prior art, the embodiment of the present invention adds the number of beacons to the element field or adds the number of beacons and the target station, and broadcasts the beacon frame carrying the element field on the wireless local area network, so that the station (terminal) receives After carrying the beacon frame of the element field, parse the element field to obtain the number of beacons, and then obtain the number of beacon frame periods at which an event is triggered next time, so that within the time interval of the number of beacon frame periods You don't need to wake up frequently to parse beacon frames and pay attention to this trigger event. You only need to wake up to parse the corresponding beacon frames after the beacon frame period interval, which avoids the inconvenience caused by frequent parsing of beacon frames. Power waste, to achieve the purpose of power saving.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

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

FIG. 2 is a flow chart of the method provided by Embodiment 2 of the present invention;

FIG. 3 is a flow chart of the method provided by Embodiment 3 of the present invention;

FIG. 4 is a structure diagram of an extended element field provided by Embodiment 3 of the present invention;

FIG. 5 is a structure diagram of an extended element field provided by Embodiment 3 of the present invention;

FIG. 6 is a flowchart of a method provided by Embodiment 4 of the present invention;

FIG. 7 is a structure diagram of an element field provided by Embodiment 4 of the present invention;

FIG. 8 and FIG. 9 are structure diagrams of element fields after redefinition provided by Embodiment 4 of the present invention;

Figure 10 and Figure 11 are schematic structural diagrams of the device provided by Embodiment 5 of the present invention;

FIG. 12 is a schematic structural diagram of a transmitter provided by Embodiment 6 of the present invention;

Figure 13 and Figure 14 are schematic structural diagrams of the device provided by Embodiment 7 of the present invention;

FIG. 15 is a schematic structural diagram of a transmitter provided by Embodiment 8 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In order to make the advantages of the technical solution of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Embodiment one

This embodiment provides a method for defining an element field, as shown in FIG. 1 , the method includes:

101. Add the number of beacons to the element field or add the number of beacons and the target station, wherein the number of beacons is used to indicate the interval between the station receiving the beacon frame to which the element field belongs and the occurrence of the triggered event. The number of frame marking cycles, the element field is the element identification number, length, and the content of the triggered event in sequence from the field head to the field end.

102. Broadcast a beacon frame carrying the element field.

Optionally, adding the number of beacons to the element field or adding the number of beacons and the target site includes:

When the triggered event content included in the element field is applied to all stations associated with the access point AP, add the number of beacons to the element field;

When the content of the triggered event included in the element field is applied to a specific station associated with the AP, add a beacon number and a target station to the element field, and the target station is used to indicate that the specific station is sensitive to the The content of the triggering event is detected and responded to, and the rest of the sites other than the specific site ignore the content of the triggered event.

Wherein, when only the number of beacons is added to the element field, the element field is the element identification number, length, number of beacons, and the content of the triggered event in sequence from the field head to the end of the field;

When the number of beacons and the target site are added to the element field, the element field includes element identification number, length, target site, number of beacons and content of the triggered event in sequence from the field head to the end of the field.

Wherein, the content of the triggered event includes: downlink data transmission and/or uplink data transmission.

Wherein, the content of the number of beacons includes: a natural number; the content of the target site includes: a site group number, a user-associated identification number ID or a media access control MAC address.

Compared with the prior art, the embodiment of the present invention adds the number of beacons to the element field or adds the number of beacons and the target station, and broadcasts the beacon frame carrying the element field on the wireless local area network, so that the station (terminal) receives After carrying the beacon frame of the element field, parse the element field to obtain the number of beacons, and then obtain the number of beacon frame periods at which an event is triggered next time, so that within the time interval of the number of beacon frame periods You don't need to wake up frequently to parse beacon frames and pay attention to this trigger event. You only need to wake up to parse the corresponding beacon frames after the beacon frame period interval, which avoids the inconvenience caused by frequent parsing of beacon frames. Power waste, to achieve the purpose of power saving.

Embodiment two

This embodiment provides a method for defining an element field, as shown in FIG. 2 , the method includes:

201. Redefine the element identification number of the element field as an element type identification number and a sub-element identification number, and the content represented by the redefined element field is jointly determined by the element type identification number and the sub-element identification number.

202. Broadcast a beacon frame carrying the element field.

Optionally, when the beacon frame contains multiple element fields belonging to the same element type, put the multiple element fields under the same element type identification number as sub-element fields for indication.

Optionally, the redefined element fields from the field head to the end of the field are: element type identification number, total length, sub-element identification number 1, length 1, until the sub-element identification number n, length n, sub-element The content of n, where n is the total number of element fields belonging to the same element type.

Compared with the prior art, the embodiment of the present invention redefines the element identification number as an element type identification number and a sub-element identification number, thereby expanding the actual number of element identification numbers used, and facilitating the site to identify elements of the same type. If the site does not support or enable a certain type of element field, then all element fields of this type can be ignored directly, avoiding the waste of power caused by parsing each element field , to achieve the purpose of power saving.

Embodiment Three

This embodiment provides a method for defining an element field, as shown in FIG. 3 , the method includes:

301. Determine whether the event corresponding to the current element field is applied to all stations associated with the AP.

302. If it is applied to all stations associated with the AP, add the number of beacons in the element field.

For example, as shown in Figure 4, the number of beacons is added to the original element field structure, and the number of beacons is added between the length and the content of the triggered event. The number of beacons can occupy 1 byte, and the number of beacons indicates the station The number of beacon frame periods between receiving the beacon frame to which the element field belongs and the occurrence of the triggered event, that is, how long it takes for the station to respond to the triggered event indicated in the beacon frame after receiving the beacon frame. The number of beacons is a natural number, for example, 0, 1, 2, 3 and so on.

For example, taking the number of beacons = 3 as an example, after receiving the beacon frame, the station parses the element field in the beacon frame and learns that the number of beacons is 3, which means that the station needs to update the element field after 3 beacon frame periods. To respond to the triggered event, then the next beacon frame period, the station can enter the power saving state, wait until the 3 beacon frame periods have passed before waking up, and respond to the triggered event included in the beacon frame, in this In the process, the site does not need to wake up every beacon frame period to parse the beacon frame, which saves the power consumption of 3 beacon frame periods. For sensor networks, the user's service period is often very long, even reaching several Using the number of beacons to indicate a station can save a lot of power over hours or days.

Optionally, in combination with Embodiment 2, when adding the number of beacons to the element field, the redefined element field from the field header to the field tail is as follows: element type identification number, total length, sub-element identification number 1, Length 1, beacon number 1, sub-element content 1, ..., sub-element identification number n, length n, beacon number n, and sub-element content n, where n is the number of element fields belonging to the same element type.

303. If it is only applied to some stations associated with the AP, add the target station and the number of beacons in the element field.

Wherein, this step is mainly aimed at the situation that the trigger event in the beacon frame is only applied to some stations associated with the AP.

For example, as shown in Figure 5, the target site and the number of beacons are added to the original element field structure, and the element fields are element identification number, length, target site, number of beacons, and triggered events in sequence from the field head to the end of the field content. Among them, the number of beacons can occupy 1 byte, and the number of beacons indicates the number of beacon frame periods between when the station receives the beacon frame to which the element field belongs and when the triggered event occurs, that is, after the station receives the beacon frame How often to respond to triggered events indicated in beacon frames. The number of beacons is a natural number, for example, 0, 1, 2, 3 and so on. The target site can occupy one or more bytes. The target site is mainly composed of the site group number, user ID or user MAC address. When the AP only needs some sites to respond to the triggered events included in the element field in the beacon frame, Broadcast the beacon frame containing the target site to the site. When the site receives the beacon frame and parses the part of the target site, it can determine whether the content included in the beacon frame is for itself. If it is not for itself, then the site will The beacon frame can be ignored, and combined with the number of beacons, the power saving control of the station targeted by the trigger event can be realized.

Optionally, in combination with Embodiment 2, when adding the number of beacons and the target site to the element field, the redefined element field from the field header to the field tail is as follows: element type identification number, total length, sub-element identification number 1, length 1, target site 1, number of beacons 1, content of sub-element 1, ..., identification number of sub-element n, length n, target site n, number of beacons n and content of sub-element n, where n is The number of element fields that belong to the same element type.

304. Broadcast the beacon frame carrying the modified element field.

Compared with the prior art, the embodiment of the present invention adds the number of beacons or adds the number of beacons and the target site to the element field according to the site conditions of the beacon frame, and broadcasts the beacon frame carrying the element field on the wireless local area network, After the station receives the beacon frame carrying the element field, it parses the element field and obtains the number of beacons, and then can obtain the number of beacon frame periods between the next triggering of a certain event, so that in this beacon frame It is not necessary to wake up frequently to parse the beacon frame within the time interval of the number of cycles to pay attention to this trigger event, just wake up to parse the corresponding beacon frame after the time interval of the beacon frame cycle, avoiding frequent parsing by the site The power waste caused by the beacon frame achieves the purpose of power saving.

Embodiment Four

This embodiment provides a method for defining an element field, as shown in FIG. 6, the method includes:

401. Redefine the element identification number in the element field.

For example, as shown in Figure 7, the format of the existing element field includes three parts: element identification number, length, and content of the triggered event, where the element identification number is used to indicate which event the element field is about, and the length is used to indicate Changing the data length occupied by the element field, the content of the triggered event is used to represent the specific content of the event. Optionally, the content of the triggered event can be uplink data transmission, downlink data transmission or other similar trigger events.

Further, in order to expand the number of element identifications, the element identification number can be divided into two parts: an element type identification number and a sub-element identification number. An element identification number may include several sub-element identification numbers, and the content represented by an element is jointly determined by the element type identification number and the sub-element identification number.

For example, the modified format can be shown in Figure 8. From the field header to the end of the field are the element type identification number, the total length, the sub-element identification number, the sub-length, and the content of the sub-element, where the total length represents the sub-element identification The length from the beginning of the number to the end of the content of the sub-element, and the sub-length identifies the length of the content of the sub-element. Or the format is as shown in Figure 9, from the field head to the end of the field are the element type identification number, total length, sub-element identification number, and content of the sub-element, where the total length represents the length from the sub-element identification number to the end of the sub-element content length.

It should be noted that the above redefinition method can bring two benefits. On the one hand, since the current total number of element identification numbers is 256, there are great restrictions on the use of element identification numbers. The definition method can greatly expand the number of element identification numbers, which can theoretically reach 256×256 element field numbers; on the other hand, in the current element field parsing process, after the station receives the beacon frame, it needs to The element identification numbers of all the element fields in the frame are analyzed to confirm whether the content of the element field is related to itself, and this process causes power waste. The above redefinition method combines element fields of the same type. If the site does not support or enable a certain type of element field, you can ignore all the multiple element fields of this type according to the element type identification number to speed up Improve the analysis efficiency and save power.

Further, consider compatibility issues with future protocols. In the case of compatibility, the element type identification number can be used as the element identification number, and the length is set to 1 byte (byte), and then the length of the sub-element identification number is determined according to the needs, for example, it can be 1 byte ; If compatibility is not required, the length of the element type identification number and the length of the sub-element identification number can be set according to specific needs.

402. Broadcast the beacon frame carrying the redefined element field.

Compared with the prior art, the embodiment of the present invention redefines the element identification number as an element type identification number and a sub-element identification number, thereby expanding the number of actual use of element identification numbers, and making it convenient for the site to identify elements of the same type. If the site does not support or enable a certain type of element field, then all element fields of this type can be ignored directly, avoiding the power waste caused by parsing each element field , to achieve the purpose of power saving.

Embodiment five

This embodiment provides an element field definition device 50. As shown in FIG. 10, the device 50 includes:

Adding unit 51, configured to add a beacon number or add a beacon number and a target station to the element field, wherein the beacon number is used to indicate that the station receives the beacon frame to which the element field belongs to the triggered event occurs The interval number of beacon frame periods, the element field from the field head to the field end is the element identification number, length and the content of the triggered event in sequence;

The broadcasting unit 52 is configured to broadcast the beacon frame carrying the element field.

Optionally, as shown in Figure 11, the adding unit 51 includes:

The first adding subunit 511 is configured to add the number of beacons to the element field when the content of the triggered event included in the element field is applied to all stations associated with the access point AP;

The second adding subunit 512 is configured to add the number of beacons and a target site to the element field when the content of the triggered event included in the element field is applied to a specific site associated with the AP, and the target site is used for The specific site is instructed to detect and respond to the content of the triggered event, and other sites other than the specific site ignore the content of the triggered event.

Wherein, when the first adding subunit 511 adds the number of beacons to the element field, the element field from the field head to the end of the field is the element identification number, length, number of beacons and the content of the triggered event ;

When the second adding subunit 512 adds the number of beacons and the target site to the element field, the element field from the field head to the end of the field is the element identification number, length, target site, beacon The number and content of the triggered event.

Wherein, the content of the triggered event includes: downlink data transmission and/or uplink data transmission.

Wherein, the content of the number of beacons includes: a natural number; the content of the target site includes: a site group number, a user-associated identification number ID or a media access control MAC address.

Compared with the prior art, the embodiment of the present invention adds the number of beacons to the element field or adds the number of beacons and the target station, and broadcasts the beacon frame carrying the element field on the wireless local area network, so that the station (terminal) receives After carrying the beacon frame of the element field, parse the element field to obtain the number of beacons, and then obtain the number of beacon frame periods at which an event is triggered next time, so that within the time interval of the number of beacon frame periods You don't need to wake up frequently to parse beacon frames and pay attention to this trigger event. You only need to wake up to parse the corresponding beacon frames after the beacon frame period interval, which avoids the inconvenience caused by frequent parsing of beacon frames. Power waste, to achieve the purpose of power saving.

Embodiment six

This embodiment provides a transmitter 60. As shown in FIG. 12, the transmitter 60 includes:

Processor 61, configured to add a beacon number or add a beacon number and a target station to the element field, wherein the beacon number is used to indicate that the station receives the beacon frame to which the element field belongs to the occurrence of the triggered event The interval number of beacon frame periods, the element field from the field head to the field end is the element identification number, length and the content of the triggered event in sequence;

The transmitter 62 is configured to broadcast the beacon frame carrying the element field.

Optionally, the processor 61 is further configured to: add the number of beacons to the element field when the content of the triggered event included in the element field is applied to all stations associated with the access point AP; When the content of the triggered event included in the element field is applied to a specific station associated with the AP, the number of beacons and the target station are added to the element field, and the target station is used to indicate that the specific station responds to the triggered event The content is detected and responded to, and the remaining sites other than the specific site ignore the content of the triggered event.

Wherein, when the processor 61 adds the number of beacons to the element field, the element field is the element identification number, length, number of beacons, and the content of the triggered event in sequence from the field head to the field end; when the When the processor 61 adds the number of beacons and the target site to the element field, the element field from the field head to the end of the field is the element identification number, length, target site, number of beacons, and the triggered event content.

Wherein, the content of the triggered event includes: downlink data transmission and/or uplink data transmission.

Wherein, the content of the number of beacons includes: a natural number; the content of the target site includes: a site group number, a user-associated identification number ID or a media access control MAC address.

Compared with the prior art, the embodiment of the present invention adds the number of beacons to the element field or adds the number of beacons and the target station, and broadcasts the beacon frame carrying the element field on the wireless local area network, so that the station (terminal) receives After carrying the beacon frame of the element field, parse the element field to obtain the number of beacons, and then obtain the number of beacon frame periods at which an event is triggered next time, so that within the time interval of the number of beacon frame periods You don't need to wake up frequently to parse beacon frames and pay attention to this trigger event. You only need to wake up to parse the corresponding beacon frames after the beacon frame period interval, which avoids the inconvenience caused by frequent parsing of beacon frames. Power waste, to achieve the purpose of power saving.

Embodiment seven

This embodiment provides an element field definition device 70, as shown in Figure 13, the device 70 includes:

The redefinition unit 71 is used to redefine the element identification number of the element field into an element type identification number and a sub-element identification number, and the content represented by the redefined element field is jointly determined by the element type identification number and the sub-element identification number;

The broadcast unit 72 is configured to broadcast the beacon frame carrying the element field.

Further, as shown in FIG. 14 , the device 70 further includes: an indicating unit 73, configured to place the multiple element fields in the same element type when the beacon frame contains multiple element fields of the same element type. An element type identification number is indicated as a sub-element field.

Among them, the redefined element fields from the field head to the end of the field are: element type identification number, total length, sub-element identification number 1, length 1, until the sub-element identification number n, length n, and the content of the sub-element n, where n is the total number of element fields belonging to the same element type.

Compared with the prior art, the embodiment of the present invention redefines the element identification number as an element type identification number and a sub-element identification number, thereby expanding the actual number of element identification numbers used, and facilitating the site to identify elements of the same type. If the site does not support or enable a certain type of element field, then all element fields of this type can be ignored directly, avoiding the waste of power caused by parsing each element field , to achieve the purpose of power saving.

Embodiment Eight

This embodiment provides a transmitter 80. As shown in FIG. 15, the transmitter 80 includes:

Processor 81, configured to redefine the element identification number of the element field into an element type identification number and a sub-element identification number, and the content represented by the redefined element field is determined by the element type identification number and the sub-element identification number Sure;

The transmitter 82 is configured to broadcast the beacon frame carrying the element field.

Optionally, the processor 81 is further configured to: when the beacon frame contains multiple element fields belonging to the same element type, put the multiple element fields under the same element type identification number as a sub-element field to indicate.

Among them, the redefined element fields from the field head to the end of the field are: element type identification number, total length, sub-element identification number 1, length 1, until the sub-element identification number n, length n, and the content of the sub-element n, where n is the total number of element fields belonging to the same element type.

Compared with the prior art, the embodiment of the present invention redefines the element identification number as an element type identification number and a sub-element identification number, thereby expanding the actual number of element identification numbers used, and facilitating the site to identify elements of the same type. If the site does not support or enable a certain type of element field, then all element fields of this type can be ignored directly, avoiding the waste of power caused by parsing each element field , to achieve the purpose of power saving.

The device for defining an element field provided by the embodiment of the present invention can implement the method embodiment provided above. For specific function implementation, please refer to the description in the method embodiment, which will not be repeated here. The method and device for defining an element field provided by the embodiments of the present invention can be applied to the interaction between an access point and a station in a wireless local area network system, but is not limited thereto.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (16)

1. a define method for element field, is characterized in that, comprising:

For element field is added number of beacons or is added number of beacons and targeted sites, wherein, described number of beacons is used to indicate website and occurs to the event that is triggered from receiving beacon frame under described element field the beacon frame number of cycles at institute interval, and described element field is followed successively by component identification number, length and the event content that is triggered from field head to field tail;

The beacon frame that carries described element field is broadcasted.

2. method according to claim 1, is characterized in that, described add number of beacons or add number of beacons and targeted sites for element field comprise:

The event content that is triggered comprising when described element field is while being applied to all websites that are associated with access point AP, for described element field is added number of beacons;

The event content that is triggered comprising when described element field is while being applied to the particular station that is associated with AP, for described element field is added number of beacons and targeted sites, described targeted sites is used to indicate described particular station the described event content that is triggered is carried out to detection and response, the event content that is triggered described in ignoring of all the other websites outside described particular station.

3. method according to claim 1, is characterized in that, when only, for described element field is while adding described number of beacons, described element field is followed successively by component identification number, length, number of beacons and the event content that is triggered from field head to field tail;

When for described element field is while adding described number of beacons and described targeted sites, described element field is followed successively by component identification number, length, targeted sites, number of beacons and the event content that is triggered from field head to field tail.

4. according to the method described in claim 1-3 any one, it is characterized in that, described in the event content that is triggered comprise: downlink data transmission and/or transmitting uplink data.

5. according to the method described in claim 1-3 any one, it is characterized in that, the content of described number of beacons comprises: natural number; The content of described targeted sites comprises: website group number, user-association identify label number ID or medium access control MAC Address.

6. a define method for element field, is characterized in that, comprising:

The component identification of element field number is redefined as element type identification number and daughter element identification number, and the represented content of element field after redefining is determined jointly by described element type identification number and described daughter element identification number;

The beacon frame that carries described element field is broadcasted.

7. method according to claim 6, is characterized in that, in the time including the multiple element field that belongs to identity element type in beacon frame, described multiple element field is placed under same element type identification number and is indicated as daughter element field.

8. method according to claim 7, it is characterized in that, element field after redefining is followed successively by from field head to field tail: element type identification number, total length, daughter element identification number 1, length 1, until represent to the content n of daughter element identification number n, length n, daughter element, wherein, n is the element field total number that belongs to identity element type.

9. a definition device for element field, is characterized in that, comprising:

Adding device, be used to element field to add number of beacons or add number of beacons and targeted sites, wherein, described number of beacons is used to indicate website and occurs to the event that is triggered from receiving beacon frame under described element field the beacon frame number of cycles at institute interval, and described element field is followed successively by component identification number, length and the event content that is triggered from field head to field tail;

Radio unit, for broadcasting the beacon frame that carries described element field.

10. the definition device of element field according to claim 9, is characterized in that, described adding device comprises:

First adds subelement, is while being applied to all websites that are associated with access point AP for the event content that is triggered comprising when described element field, for described element field is added number of beacons;

Second adds subelement, while being applied to the particular station that is associated with AP for the event content that is triggered comprising when described element field, for described element field is added number of beacons and targeted sites, described targeted sites is used to indicate described particular station the described event content that is triggered is carried out to detection and response, the event content that is triggered described in ignoring of all the other websites outside described particular station.

The definition device of 11. element field according to claim 9, it is characterized in that, to add subelement be described element field while adding described number of beacons when described first, and described element field is followed successively by component identification number, length, number of beacons and the event content that is triggered from field head to field tail;

To add subelement be described element field while adding described number of beacons and described targeted sites when described second, and described element field is followed successively by component identification number, length, targeted sites, number of beacons and the event content that is triggered from field head to field tail.

12. according to the definition device of the element field described in claim 9-11 any one, it is characterized in that, described in the event content that is triggered comprise: downlink data transmission and/or transmitting uplink data.

13. according to the definition device of the element field described in claim 9-11 any one, it is characterized in that, the content of described number of beacons comprises: natural number; The content of described targeted sites comprises: website group number, user-association identify label number ID or medium access control MAC Address.

The definition device of 14. 1 kinds of element field, is characterized in that, comprising:

Redefine unit, for the component identification of element field number being redefined into element type identification number and daughter element identification number, the represented content of element field after redefining is determined jointly by described element type identification number and described daughter element identification number;

Radio unit, for broadcasting the beacon frame that carries described element field.

The definition device of 15. element field according to claim 14, is characterized in that, also comprises:

Indicating member, when including when beacon frame the multiple element field that belongs to identity element type, is placed on described multiple element field under same element type identification number and indicates as daughter element field.

The definition device of 16. element field according to claim 15, it is characterized in that, element field after redefining is followed successively by from field head to field tail: element type identification number, total length, daughter element identification number 1, length 1, until represent to the content n of daughter element identification number n, length n, daughter element, wherein, n is the element field total number that belongs to identity element type.

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