CN111050289A - Beacon transmitting and receiving method and device, storage medium and terminal - Google Patents
Beacon transmitting and receiving method and device, storage medium and terminal Download PDFInfo
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- CN111050289A CN111050289A CN201911309944.6A CN201911309944A CN111050289A CN 111050289 A CN111050289 A CN 111050289A CN 201911309944 A CN201911309944 A CN 201911309944A CN 111050289 A CN111050289 A CN 111050289A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
Abstract
A beacon sending method, a beacon receiving method, a device, a storage medium and a terminal are provided, wherein the beacon sending method comprises the following steps: determining the number of beacon layers, wherein the number of beacon layers is more than or equal to 2; determining the content of a first-layer beacon, wherein the content of the first-layer beacon at least comprises a necessary field, and the necessary field is used for all receiving devices to perform channel scanning or time synchronization; determining contents of other layer beacons, the contents of the other layer beacons including an extension field; and respectively sending out the content of the first layer beacon and the content of the other layer beacons at different time. The technical scheme of the invention can reduce the time occupied by the beacon broadcast and improve the beacon broadcast and receiving efficiency.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a beacon transmitting method, a beacon receiving device, a beacon receiving storage medium, and a terminal.
Background
In IEEE802.11, a beacon (beacon) signal is broadcast using a low Modulation and Coding Scheme (MCS).
As the correction extends the fields of the beacon, the content of the beacon is larger and larger, and the overhead of the beacon is also larger and larger. In the 802.11-2016 version, 68 elements are defined for the beacon frame body. 86 elements are defined in the 802.11ax D4.3 version. For the ongoing 802.11TGbe standard development, several improvements are being considered and the beacon size will increase further. For example, in a system supporting multilink transmission, a beacon in one channel may also carry information for other channels.
However, the beacon frame needs to be broadcast in a low MCS to support multiple STAs for different purposes. As the beacon contains more and more fields, the beacon broadcast takes longer and longer.
Disclosure of Invention
The technical problem solved by the invention is how to reduce the time occupied by the beacon broadcast and improve the beacon broadcast and receiving efficiency.
In order to solve the above technical problem, an embodiment of the present invention provides a beacon transmission method, where the beacon transmission method includes: determining the number of beacon layers, wherein the number of beacon layers is more than or equal to 2; determining the content of a first-layer beacon, wherein the content of the first-layer beacon at least comprises a necessary field, and the necessary field is used for all receiving devices to perform channel scanning or time synchronization; determining contents of other layer beacons, the contents of the other layer beacons including an extension field; and respectively sending out the content of the first layer beacon and the content of the other layer beacons at different time.
Optionally, the sending out the content of the first layer beacon and the content of the other layer beacon at different times respectively includes: and transmitting the content of the first layer beacon and the content of other layer beacons by adopting different MCS, wherein the MCS for transmitting the content of the other layer beacons is higher than the MCS for transmitting the content of the first layer beacons.
Optionally, the sending out the content of the first layer beacon and the content of the other layer beacon at different times respectively includes: transmitting the content of the first layer beacon and the content of the other layer beacons using the same MCS.
Optionally, the beacons of each layer have the same or different PPDU, frame format, bandwidth, or STBC mode.
Optionally, the frame format is selected from HT, VHT, HE, and EHT; the bandwidth is selected from 20MHz, 40MHz and 80 MHz.
Optionally, the sending out the content of the first layer beacon and the content of the other layer beacon at different times respectively includes: and transmitting the content of the first layer beacon and the content of the other layer beacons by adopting a mode that the adjacent layer beacon time interval is SIFS.
Optionally, the content of the first layer beacon and the content of the other layer beacons further include current layer indication information, lower layer indication information, or final layer indication information, where the current layer indication information is used to indicate a layer number, the lower layer indication information is used to indicate whether a next layer exists, and the final layer indication information is used to indicate a layer number of a final layer.
In order to solve the above technical problem, an embodiment of the present invention further discloses a beacon receiving method, where the beacon receiving method includes: receiving content of a first layer beacon, the content of the first layer beacon comprising at least required fields for channel scanning or time synchronization; receiving the content of the other layer beacon according to the requirement, wherein the content of the other layer beacon comprises an extension field.
Optionally, the extension field is selected from extension fields in different versions of standard protocols, and the receiving the content of the other layer beacon according to the requirement includes: receiving other layer beacons including a version extension field of a current standard protocol supported by itself according to the version of the current standard protocol.
Optionally, the extension field has different extension functions, and the receiving the content of the beacon of the other layer according to the requirement includes: and receiving other layer beacons including the extension fields with the required extension functions according to the required extension functions of the other layer beacons.
The embodiment of the invention also discloses a beacon sending device, which comprises: the device comprises a beacon layer number determining module, a beacon layer number determining module and a beacon layer number judging module, wherein the beacon layer number is more than or equal to 2; a first layer beacon determining module, configured to determine content of a first layer beacon, where the content of the first layer beacon at least includes a necessary field, and the necessary field is used for all receiving devices to perform channel scanning or time synchronization; a further layer beacon determining module to determine content of a further layer beacon, the content of the further layer beacon comprising an extension field; and the beacon sending module is used for respectively sending out the content of the first layer beacon and the content of the other layer beacon at different moments.
The embodiment of the invention also discloses a beacon receiving device, which comprises: a first layer beacon receiving module, configured to receive content of a first layer beacon, where the content of the first layer beacon at least includes a necessary field, and the necessary field is used for performing channel scanning or performing time synchronization; and the other-layer beacon receiving module is used for receiving the content of the other-layer beacon according to the requirement, wherein the content of the other-layer beacon comprises an extension field.
The embodiment of the invention also discloses a storage medium, which is stored with computer instructions, and the computer instructions execute the steps of the beacon sending method or the steps of the beacon receiving method when running.
The embodiment of the invention also discloses a terminal, which comprises a memory and a processor, wherein the memory is stored with a computer instruction capable of running on the processor, and the processor executes the steps of the beacon sending method or the beacon receiving method when running the computer instruction.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the technical scheme of the invention divides the beacons to be transmitted into first layer beacons and other layer beacons by layering, the layer number of the other layer beacons is more than or equal to 1, and the contents of the first layer beacons and the other layer beacons are respectively transmitted; compared with the existing beacon, the content of the beacon of the first layer at least comprises necessary fields, the requirement that all receiving devices (such as traditional devices) carry out channel scanning or time synchronization can be met, and the content of the beacon contained in the first layer is less, and the broadcasting time is shorter; in addition, the content of the beacon of the other layer comprises an extension field, which can broadcast with a higher MCS (for example, broadcast for a station device in a short distance), so that the broadcast time is saved, and especially in a scene that the extension field is increased, the time occupied by the beacon broadcast can be significantly reduced, so that the beacon broadcast and receiving efficiency is improved.
Further, the content of the other layer beacon is transmitted by a higher MCS than the content of the first layer beacon, or the content of the other layer beacon is transmitted by a higher bandwidth than the content of the first layer beacon. The technical scheme of the invention further shortens the total beacon duration by using higher MCS or bandwidth in the beacon of the higher layer. In addition, for station devices which do not need other layer beacon content, the beacon receiving efficiency can be improved by ignoring, namely not receiving, the beacon of the later layer.
Drawings
Fig. 1 is a flowchart of a beacon transmission method according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating an exemplary application scenario of the present invention;
fig. 3 is a flowchart of a beacon receiving method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a beacon transmitting apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a beacon receiving device according to an embodiment of the present invention.
Detailed Description
As described in the background, beacon frames need to be broadcast in a low MCS to support multiple STAs for different purposes. As the beacon contains more and more fields, the beacon broadcast takes longer and longer.
In the prior art, beacons have been designed with some improvements for different purposes. For example, TIM frame designs for power savings may extract some information from beacons and be used less frequently; the dual-beacon design of a Space-Time Block Code (STBC) mode can support remote equipment; the short beacon and the long beacon are designed, so that the beacon overhead is reduced, because the transmission frequency of the long beacon is low.
However, the inventors of the present application have discovered that the TIM frame is an additional component to the beacon and is designed specifically for power conservation. Without the aid of other purposes, such as channel scanning. The dual beacon with the extra STBC beacon is specifically designed for longer Basic Service Set (BSS) coverage without the help of other purposes, such as power saving. The long beacon and short beacon designs have the following assumptions: the long beacon does not need to be sent as frequently as the short beacon.
The technical scheme of the invention divides the beacons to be transmitted into first layer beacons and other layer beacons by layering, the layer number of the other layer beacons is more than or equal to 1, and the contents of the first layer beacons and the other layer beacons are respectively transmitted; compared with the existing beacon, the content of the beacon of the first layer at least comprises necessary fields, the requirement that all receiving devices (such as traditional devices) carry out channel scanning or time synchronization can be met, and the content of the beacon contained in the first layer is less, and the broadcasting time is shorter; in addition, the content of the beacon of the other layer comprises an extension field, which can broadcast with a higher MCS (for example, broadcast for a station device in a short distance), so that the broadcast time is saved, and especially in a scene that the extension field is increased, the time occupied by the beacon broadcast can be significantly reduced, so that the beacon broadcast and receiving efficiency is improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of a beacon transmitting method according to an embodiment of the present invention.
The beacon transmission method shown in fig. 1 may be used at an Access Point (AP) side in a WLAN system, that is, the AP may execute the steps of the method shown in fig. 1.
Specifically, the beacon transmission method shown in fig. 1 may include the following steps:
step S101: determining the number of beacon layers, wherein the number of beacon layers is more than or equal to 2;
step S102: determining the content of a first-layer beacon, wherein the content of the first-layer beacon at least comprises a necessary field, and the necessary field is used for all receiving devices to perform channel scanning or time synchronization;
step S103: determining contents of other layer beacons, the contents of the other layer beacons including an extension field;
step S104: and respectively sending out the content of the first layer beacon and the content of the other layer beacons at different time.
It should be noted that the sequence numbers of the steps in this embodiment do not represent a limitation on the execution sequence of the steps.
In the specific implementation of step S101, the AP may determine the number of beacon layers and the beacon contents of each layer according to its own capability and usage requirement, that is, determine the number of layers for dividing all the beacon contents that need to be transmitted, where the number of beacon layers is a positive integer greater than or equal to 2.
Specifically, the beacon content that the AP needs to transmit may include a necessary field and an extended field (extendedfield), and the necessary field may be transmitted to all receiving devices, for example, station devices, for channel scanning (channel scan) or time synchronization by all receiving devices. The extension field has a different function from the necessary field.
In other words, if the required fields are all fields (fields) defined by a standard protocol of a previous version of the current standard protocol, the extended fields are fields newly defined by the current standard protocol relative to the standard protocol of the previous version thereof. Or, the station devices support different functions and the number of supported functions is different, the necessary field is a field required by fewer functions supported by all the station devices, and the extended field is a field required by additional functions of the station devices supporting more functions.
In one embodiment, the required fields may be selected from all fields (including 802.11ax) defined by protocols of previous versions of the standard protocol 802.11be, and correspondingly, the extended fields may be selected from newly defined fields in 802.11 be; alternatively, the required fields may be selected from all fields defined by the protocol of the previous version of 802.11ac, and correspondingly, the extended fields may be selected from the fields newly defined in 802.11ax and higher.
In another particular embodiment, the AP may define several device classes for the STA. For example, class 1 devices support fewer functions, class 2 devices support more functions, and class 2 devices include all of the functions supported by class 1 devices. In this case, the necessary field may be selected from fields supporting functions required by the type 1 device, and the extended field may be selected from fields supporting additional functions required by the type 2 device. Or, for example, the type 1 device is a general device, and the type 2 device is a device that supports other multiple concurrent AP functions. The required field may be selected from normal beacon information and the extended field may be selected from beacon information required for multiple concurrent AP functions.
It should be noted that, for specific necessary fields or extended fields, reference may be made to relevant specifications of different communication standard protocols, such as 802.11a/b, 802.11n,802.11ac, 802.11ax, etc., and details are not described herein again.
In a specific implementation of step S102, the AP may determine the content of the first layer beacon, which includes at least the necessary fields. Specifically, the first-layer beacon contains less content than the beacon in the prior art, i.e., contains only necessary fields, but the first-layer beacon and the beacon in the prior art may use the same MCS, bandwidth, and frame format (format).
It is to be understood that, regarding the specific MCS, bandwidth and frame format adopted by the beacon in the prior art, reference may be made to the prior art, and the embodiment of the present invention is not limited thereto.
In a specific implementation of step S102, the AP may determine the contents of other layer beacons. For example, in the case where the number of beacon layers is two, the AP may determine the content of the second layer beacon; in the case where the number of beacon layers is three, the AP may determine the contents of the second layer beacon and the third layer beacon.
In one particular embodiment, the beacons of each layer may be divided according to versions of the standard protocol, e.g., a first layer beacon comprising fields defined in 802.11a/b, a second layer beacon comprising fields defined in 802.11n, a third layer beacon comprising fields defined in 802.11ac, and a fourth layer beacon comprising fields defined in 802.11 ax.
As another example, a first layer beacon includes all information before 802.11be (including 802.11ax), a second layer beacon includes a newly defined field in 11 be; the first layer beacon includes fields defined before 802.11ac and the second layer beacon includes fields defined in 802.11ax and beyond.
In one embodiment, each layer of beacons may be divided according to the importance of the field, for example, in the case of two layers of beacons, the first layer of beacons includes the most important field and the second layer of beacons includes the remaining fields.
It should be noted that, the specific fields included in each layer of beacon may be adjusted and combined according to the actual application requirement, and the embodiment of the present invention is not limited to this.
Further, in the specific implementation of step S103, the AP may transmit the content of the first layer beacon and the content of the other layer beacon at different times. That is to say, the beacons of each layer are independent of each other, and may have different transmission parameters, such as Modulation and Coding Scheme (MCS), bandwidth, frame format, and the like, so that the beacons may be independently transmitted at different times for the station device to independently receive according to different transmission parameters.
The embodiment of the invention divides the beacons to be transmitted into the first layer of beacons and other layers of beacons by layering, wherein the number of the layers of the beacons is more than or equal to 1, and the contents of the first layer of beacons and the other layers of beacons are respectively transmitted; compared with the existing beacon, the content of the beacon of the first layer at least comprises necessary fields, the requirement that all receiving devices (such as traditional devices) carry out channel scanning or time synchronization can be met, and the content of the beacon contained in the first layer is less, and the broadcasting time is shorter; in addition, the content of the beacon of the other layer comprises an extension field, which can broadcast with a higher MCS (for example, broadcast for a station device in a short distance), so that the broadcast time is saved, and especially in a scene that the extension field is increased, the time occupied by the beacon broadcast can be significantly reduced, so that the beacon broadcast and receiving efficiency is improved.
In one non-limiting embodiment of the present invention, step S104 shown in fig. 1 may include the following steps: and transmitting the content of the first layer beacon and the content of other layer beacons by adopting different MCS, wherein the MCS for transmitting the content of the other layer beacons is higher than the MCS for transmitting the content of the first layer beacons.
In this embodiment, different MCSs may be used when transmitting the content of each layer of beacon. Wherein a higher MCS is used in higher layer beacons (e.g., second layer beacons, third layer beacons, etc.), the higher layer beacons may be transmitted in less time, thereby further reducing the total beacon duration.
For example, lower MCS is used for transmitting the first layer beacon. And the MCS for sending the second layer beacon is higher than that for sending the first layer beacon, the MCS for sending the third layer beacon is higher than or equal to that for sending the second layer beacon, and the like.
In a specific application scenario, taking BW 20MHz as an example, the MCS used by the first layer beacon is 6Mbps (802.11a format), and the MCS used by the second layer beacon is 24Mbps (802.11a format); alternatively, the MCS employed by the first layer beacon is 802.11n MCS0 (i.e., 6.5Mbps), and the MCS employed by the second layer beacon is 802.11n MCS3 (i.e., 26 Mbps).
In addition, for station devices which do not need other layer beacon content, the beacon receiving efficiency can be improved by ignoring, namely not receiving, the beacon of the later layer.
In a non-limiting embodiment of the present invention, the bandwidth for transmitting the content of the other layer beacon is higher than the bandwidth for transmitting the content of the first layer beacon.
In this embodiment, different Bandwidths (BW) may be used when transmitting the content of each layer of beacon. Wherein the use of higher bandwidth in higher layer beacons (e.g., second layer beacons, third layer beacons, etc.) may allow for lower time to transmit higher layer beacons, thereby further reducing the overall beacon duration.
In one specific application scenario, the first layer beacon may use 802.11a or 802.11n legacy copies (4 repeated 20MHz signals in the total bandwidth of 80 MHz), and the second layer beacon uses a bandwidth of 802.11ac80MHz bandwidth mode.
In particular, the higher MCS, the wider bandwidth, or the more extension fields are used in the higher layer beacon because the higher layer beacon serves the station devices closer together, i.e., the higher layer beacon is used to transmit to the STAs with smaller BSS coverage.
In one non-limiting embodiment of the present invention, step S104 shown in fig. 1 may include the following steps: transmitting the content of the first layer beacon and the content of the other layer beacons using the same MCS.
Unlike the previous embodiment, the same MCS may be used when transmitting the content of each layer beacon in the present embodiment.
In a non-limiting embodiment of the present invention, each layer of beacons has the same or different physical layer convergence procedure Protocol Data Unit (PLCP) Protocol Data Unit (PPDU), frame format, bandwidth or STBC mode.
Further, the frame format may be selected from High Throughput (HT), Very High Throughput (VHT), High Efficiency (HE), and Very High Throughput (EHT); the bandwidth may be selected from 20MHz, 40MHz, and 80 MHz.
In one non-limiting embodiment of the present invention, step S104 shown in fig. 1 may include the following steps: and transmitting the content of the first layer beacon and the content of the other layer beacons by adopting a mode that the adjacent layer beacon time interval is SIFS.
In this embodiment, the time interval between the sending times of the beacons in each layer may be a short interframe Space (SIFS for short), and specifically, the time interval between the sending end time of the beacon in the current layer and the sending start time of the beacon in the next layer may be SIFS.
In another embodiment of the present invention, the beacon interval of adjacent layers may also be any other implementable fixed or non-fixed length interval, where the fixed length is greater than the time length of SIFS, which is not limited by the embodiment of the present invention.
In a non-limiting embodiment of the present invention, the content of the first layer beacon and the content of the other layer beacons further include current layer indication information, lower layer indication information, or final layer indication information, where the current layer indication information is used to indicate a layer number, the lower layer indication information is used to indicate whether a next layer exists, and the final layer indication information is used to indicate a layer number of a final layer.
In this embodiment, each layer beacon may have a layer number (number), and the layer number may be included in the current layer indication information and carried in the content of the first layer beacon.
The content of each layer of beacons may also indicate whether a next layer exists or whether the current layer is the final layer, that is, the content of each layer of beacons may also include lower layer indication information or final layer indication information to assist the receiving device in determining reception of each layer of beacons.
In a specific application scenario of the present invention, referring to fig. 2, in the prior art, a beacon may include a preamble, a beacon content body, and a Frame Check Sequence (FCS). Wherein the beacon content body includes all standard protocol supported fields.
For the layered beacon scheme in this application, reference is made to example 1, example 2 and example 3. In the scheme shown in example 1, the beacons include a first layer (layer1) beacon and a second layer (layer2) beacon, and the beacon contents in the first layer beacon and the second layer beacon are different. The time interval between the first layer beacon and the second layer beacon is SIFS. Since the second layer beacon can adopt a higher MCS than the beacon of the prior art, the broadcast thereof takes a shorter time, and the time for broadcasting the total beacon is shortened.
Unlike example 1, the time interval between the first-layer beacon and the second-layer beacon in example 2 is a fixed time length, which is greater than SIFS. Wherein the AP may transmit other data within the fixed length of time.
Unlike example 1, the beacon in example 3 includes a first layer (layer1) beacon, a second layer (layer2) beacon, and a third layer (layer3) beacon. Both the second layer beacons and the third layer beacons may employ a higher MCS than prior art beacons.
The embodiment of the invention also discloses a beacon receiving method, which can be used on the side of the station equipment, namely the station equipment can execute each step shown in the figure 3.
Referring to fig. 3, the beacon receiving method may specifically include the following steps:
step S301: receiving content of a first layer beacon, the content of the first layer beacon comprising at least required fields for channel scanning or time synchronization;
step S302: receiving the content of the other layer beacon according to the requirement, wherein the content of the other layer beacon comprises an extension field.
In this embodiment, the station device may receive the content of the first layer beacon to perform channel scanning or perform time synchronization. The first tier beacons are those that the station device must receive and demodulate. For the content of the beacon of other layer, the station device can selectively receive, that is, decide whether to receive according to the requirement.
In one non-limiting embodiment of the present invention, step S302 shown in fig. 3 may include the following steps: receiving other layer beacons including a version extension field of a current standard protocol supported by itself according to the version of the current standard protocol.
In this embodiment, if the other layer beacon contains a field defined by the version of the current standard protocol supported by the station itself, the station receives the content of the other layer beacon, otherwise, the station does not receive the content of the other layer beacon.
In one non-limiting embodiment of the present invention, step S302 shown in fig. 3 may include the following steps: and receiving other layer beacons including the extension fields with the required extension functions according to the required extension functions of the other layer beacons.
In this embodiment, if the other layer beacon includes an extension field having an extension function required by the station, the station receives the content of the other layer beacon, otherwise, the station does not receive the content of the other layer beacon. For example, a station may know which layers of beacons contain the required information during the handshake with the AP; or the AP indicates the number of beacon layers it receives after obtaining STA capabilities.
That is, for a STA, it can obtain the layer number of other layers it needs to receive through interaction with the AP; or, it may obtain the layer number of the other layer it needs to receive through the indication information of the AP.
Referring to fig. 4, an embodiment of the present invention further discloses a beacon transmitting apparatus 40, where the beacon transmitting apparatus 40 may include:
a beacon layer number determining module 401, configured to determine a beacon layer number, where the beacon layer number is greater than or equal to 2;
a first layer beacon determining module 402, configured to determine content of a first layer beacon, where the content of the first layer beacon at least includes a necessary field, and the necessary field is used for all receiving devices to perform channel scanning or time synchronization;
a further layer beacon determining module 403, configured to determine content of a further layer beacon, where the content of the further layer beacon includes an extension field;
a beacon sending module 404, configured to send the content of the first layer beacon and the content of the other layer beacon at different times, respectively.
In a particular embodiment, the beacon transmission module 404 may transmit the content of the first layer beacon and the content of the other layer beacons using different MCSs, wherein the content of the other layer beacons is transmitted using a higher MCS than the content of the first layer beacon.
In a particular embodiment, the beacon transmission module 404 may also transmit the content of the first layer beacon and the content of the other layer beacons using the same MCS.
In a specific embodiment, the beacon sending module 404 may send the content of the first layer beacon and the content of the other layer beacons in a manner that the beacon time interval of adjacent layers is SIFS.
Referring to fig. 5, an embodiment of the present invention further discloses a beacon receiving apparatus 50, where the beacon receiving apparatus 50 may include:
a first layer beacon receiving module 501, configured to receive content of a first layer beacon, where the content of the first layer beacon at least includes necessary fields, and the necessary fields are used for performing channel scanning or performing time synchronization;
the other-layer beacon receiving module 502 is configured to receive the content of the other-layer beacon according to a requirement, where the content of the other-layer beacon includes an extension field.
In a specific embodiment, the other-layer beacon receiving module 502 may receive the other-layer beacon including the version extension field of the current standard protocol according to the version of the current standard protocol supported by itself.
In a specific embodiment, the other-layer beacon receiving module 502 may also receive other-layer beacons including extension fields with the required extension functions according to the required extension functions of the other-layer beacons.
For more details of the operation principle and the operation mode of the beacon transmitting device 40 and the beacon receiving device 50, reference may be made to the description in fig. 1 to fig. 2, and details are not repeated here.
The embodiment of the invention also discloses a storage medium which is a computer readable storage medium and stores computer instructions, and the computer instructions can execute the steps of the method shown in fig. 1 or fig. 3 when running. The storage medium may include ROM, RAM, magnetic or optical disks, etc. The storage medium may further include a non-volatile memory (non-volatile) or a non-transitory memory (non-transient), and the like.
The embodiment of the invention also discloses a terminal which can comprise a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the method shown in fig. 1 or fig. 3. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. A beacon transmission method, comprising:
determining the number of beacon layers, wherein the number of beacon layers is more than or equal to 2;
determining the content of a first-layer beacon, wherein the content of the first-layer beacon at least comprises a necessary field, and the necessary field is used for all receiving devices to perform channel scanning or time synchronization;
determining contents of other layer beacons, the contents of the other layer beacons including an extension field;
and respectively sending out the content of the first layer beacon and the content of the other layer beacons at different time.
2. The method for sending beacons according to claim 1, wherein the sending out the content of the first layer beacon and the content of the other layer beacons at different time points respectively comprises:
and transmitting the content of the first layer beacon and the content of other layer beacons by adopting different MCS, wherein the MCS for transmitting the content of the other layer beacons is higher than the MCS for transmitting the content of the first layer beacons.
3. The method for sending beacons according to claim 1, wherein the sending out the content of the first layer beacon and the content of the other layer beacons at different time points respectively comprises:
transmitting the content of the first layer beacon and the content of the other layer beacons using the same MCS.
4. The method of claim 1, wherein the beacons of each layer have the same or different PPDU, frame format, bandwidth, or STBC pattern.
5. The beacon transmitting method of claim 4, wherein the frame format is selected from HT, VHT, HE, and EHT; the bandwidth is selected from 20MHz, 40MHz and 80 MHz.
6. The method for sending beacons according to claim 1, wherein the sending out the content of the first layer beacon and the content of the other layer beacons at different time points respectively comprises:
and transmitting the content of the first layer beacon and the content of the other layer beacons by adopting a mode that the adjacent layer beacon time interval is SIFS.
7. The beacon transmission method of claim 1, wherein the content of the first-layer beacon and the content of the other-layer beacons further include current-layer indication information, lower-layer indication information, or final-layer indication information, wherein the current-layer indication information is used for indicating a layer number, the lower-layer indication information is used for indicating whether a next layer exists, and the final-layer indication information is used for indicating a layer number of a final layer.
8. A beacon reception method, comprising:
receiving content of a first layer beacon, the content of the first layer beacon comprising at least required fields for channel scanning or time synchronization;
receiving the content of the other layer beacon according to the requirement, wherein the content of the other layer beacon comprises an extension field.
9. The beacon receiving method according to claim 8, wherein the extension field is selected from extension fields in different versions of standard protocols, and the receiving the content of the other layer beacon according to the requirement includes: receiving other layer beacons including a version extension field of a current standard protocol supported by itself according to the version of the current standard protocol.
10. The beacon receiving method according to claim 8, wherein the extension fields have different extension functions, and the receiving the content of the other layer beacon according to the requirement comprises:
and receiving other layer beacons including the extension fields with the required extension functions according to the required extension functions of the other layer beacons.
11. A beacon transmission apparatus, comprising:
the device comprises a beacon layer number determining module, a beacon layer number determining module and a beacon layer number judging module, wherein the beacon layer number is more than or equal to 2;
a first layer beacon determining module, configured to determine content of a first layer beacon, where the content of the first layer beacon at least includes a necessary field, and the necessary field is used for all receiving devices to perform channel scanning or time synchronization;
a further layer beacon determining module to determine content of a further layer beacon, the content of the further layer beacon comprising an extension field;
and the beacon sending module is used for respectively sending out the content of the first layer beacon and the content of the other layer beacon at different moments.
12. A beacon receiving apparatus, comprising:
a first layer beacon receiving module, configured to receive content of a first layer beacon, where the content of the first layer beacon at least includes a necessary field, and the necessary field is used for performing channel scanning or performing time synchronization;
and the other-layer beacon receiving module is used for receiving the content of the other-layer beacon according to the requirement, wherein the content of the other-layer beacon comprises an extension field.
13. A storage medium having stored thereon computer instructions, wherein the computer instructions are operable to perform the steps of the beacon transmitting method of any one of claims 1 to 7 or the steps of the beacon receiving method of any one of claims 8 to 10.
14. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor when executing the computer instructions performs the steps of the beacon transmitting method of any one of claims 1 to 7 or the steps of the beacon receiving method of any one of claims 8 to 10.
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