CN106470488B - Channel bundling method and device - Google Patents

Abstract

Embodiments of the present invention provide a method and device for channel bonding. The method includes: first, the AP determines the average value of RSSI of any channel between the AP and a station STA within a preset time period, the interference received by the AP, and the interference received by the STA. At least one of the interferences received by the STA, and secondly, the AP determines the CCA threshold corresponding to any channel according to at least one of the average value of the RSSI of any channel, the interference received by the AP, and the interference received by the STA; The channels that satisfy the power value of the current signal less than or equal to the CCA threshold corresponding to any channel are bundled, and the downlink radio frame is sent through the bundled channel. By accurately determining the CCA threshold corresponding to the channel within the preset time period, channel bundling is effectively achieved, thereby improving the concurrency of transmission and the throughput of the system.

Description

Channel bonding method and device

technical field

Embodiments of the present invention relate to communication technologies, and in particular, to a channel bonding method and device.

Background technique

With the development of wireless local area network (Wireless Local Area Network, WLAN for short) technology, the 802.11n standard proposes the concept of channel bonding. For example, two 20MHz channels can be expanded into 40MHz channels through channel bonding technology. In the channel bonding technology, a clear channel assessment (Clear Channel Assessment, CCA for short) technology is very important.

Clear Channel Assessment (CCA) technology marks the state of the channel by monitoring the signal strength in the channel. If the clear channel assessment threshold is exceeded, the state of the channel is marked as busy, otherwise, the state of the channel is marked. is idle. Therefore, the determination of the CCA threshold in the CCA technology determines the state of the channel, and channel bundling can be performed effectively only when the CCA threshold is accurately located.

In the prior art, the CCA thresholds set by the 802.11n standard and the 802.11ac standard are both fixed values. In this case, the access point (Access Point, AP for short) cannot accurately know the current state of the channel, and thus cannot perform effective operations. bundling of channels, thereby reducing the concurrency of transmission and the throughput of the system.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a channel bonding method and device, so as to achieve effective channel bonding, thereby improving transmission concurrency and system throughput.

In a first aspect, an embodiment of the present invention provides a channel bonding method, including: an access point AP determining an average value of RSSI of received signal strength indications of any channel between the AP and a station STA within a preset time period , at least one of the interference received by the AP and the interference received by the STA, wherein the average value of the RSSI of any channel is: all uplink radio frames on the any channel within the preset time period The average value of the RSSI; the AP determines the CCA corresponding to the any channel according to at least one of the average value of the RSSI of the any channel, the interference received by the AP, and the interference received by the STA Threshold; the AP detects the current signal on any of the channels, and determines whether a preset condition is met, and the preset condition is: the power value of the current signal is less than or equal to the CCA threshold corresponding to any of the channels ; the AP bundles all channels that meet the preset conditions, and sends downlink radio frames through the bundled channels.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the AP is based on the average value of the RSSI of the any one channel, the interference received by the AP, and the interference received by the STA. At least one of determining the CCA threshold corresponding to the any one of the channels includes: the AP calculates the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; wherein, CCA represents the any one of the channels Corresponding CCA threshold, ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, a is 0 or 1, b is 0 or 1, and c is 0 or 1, and a, b, c are not 0 at the same time.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the AP determining the interference received by the AP includes: the AP determining that the Let the average value of RSSI of all radio frames transmitted in all the first overlapping basic service set OBSS in the time period be the interference received by the AP, and the first OBSS is the first basic service where the AP is located The intersection of the set BSS and the second BSS, where the second BSS is any BSS that does not include the AP.

With reference to the first aspect or the first possible implementation manner or the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the AP determines the interference received by the STA, including: The AP receives the average value of the RSSIs of all radio frames transmitted in the second overlapping basic service set OBSS in the preset time period and sent by the STA; the AP determines that the second OBSS The average value of the RSSI of all the transmitted radio frames is the interference received by the STA, the second OBSS is the intersection of the third basic service set BSS where the STA is located and the fourth BSS, and the fourth BSS is any A BSS that does not include the STA.

In a second aspect, an embodiment of the present invention provides a channel bundling method, including: a station STA determines, within a preset time period, the received signal strength indication of any channel between the AP and the station STA to indicate an average value of RSSI, an at least one of the interference received by the AP and the interference received by the STA, wherein the average value of the RSSI of any channel is: the RSSI of all downlink radio frames on the any channel within the preset time period The STA determines the CCA threshold corresponding to the any channel according to at least one of the average value of the RSSI of the any channel, the interference received by the AP, and the interference received by the STA; the The STA sends the CCA threshold corresponding to the any channel to the AP, so that the AP detects the current signal on the any channel, judges whether the preset conditions are met, and evaluates all the signals that meet the preset conditions. The channels are bundled, wherein the preset conditions are: the power value of the current channel is less than or equal to the CCA threshold corresponding to any one of the channels; the STA sends the uplink radio frame through the bundled channel.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the STA is based on at least one of the average value of the RSSI of any one of the channels, the interference experienced by the AP, and the interference experienced by the STA or determining the CCA threshold corresponding to the any channel, including: the STA calculates the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; wherein, CCA represents the CCA threshold corresponding to the any channel , ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, a is 0 or 1, b is 0 or 1, and c is 0 or 1, And a, b, c are not 0 at the same time.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the STA determining the interference received by the AP includes: the STA receiving a transmission from the AP The average value of RSSI of all radio frames transmitted in all the first overlapping basic service set OBSS within the preset time period; the STA determines the average value of all radio frames transmitted in the first OBSS The average value of RSSI is the interference received by the AP, the first OBSS is the intersection of the first basic service set BSS where the AP is located and the second BSS, and the second BSS is any one that does not include the AP BSS.

With reference to the second aspect or the first possible implementation manner or the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the STA determines the interference received by the STA, including: the The STA determines that the average value of RSSIs of all radio frames transmitted in all the second overlapping basic service set OBSS within the preset time period is the interference received by the STA, and the second OBSS is the interference received by the STA. The intersection of the third basic service set BSS where the STA is located and the fourth BSS, where the fourth BSS is any BSS that does not include the STA.

In a third aspect, an embodiment of the present invention provides a channel bonding apparatus, the apparatus is an access point AP, and includes: a determination module, a detection module, a bonding module, and a sending module; the determination module is used for: determining a preset The received signal strength of any channel between the AP and the station STA in the time period indicates at least one of the average value of RSSI, the interference received by the AP, and the interference received by the STA, wherein the signal strength of any channel is The average value of RSSI is: the average value of RSSI of all uplink radio frames on any channel within the preset time period; according to the average value of the RSSI of any channel, the AP received At least one of the interference and the interference received by the STA determines the CCA threshold corresponding to the any channel; the detection module is configured to detect the current signal on the any channel, and determine whether a preset condition is met, The preset conditions are: the power value of the current signal is less than or equal to the CCA threshold corresponding to any one of the channels; the bundling module is configured to bundle all channels that meet the preset conditions, and the sending The module sends downlink radio frames through the bundled channel.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the determining module is specifically configured to: calculate the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; wherein , CCA represents the CCA threshold corresponding to any channel, ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, a is 0 or 1, b is 0 or 1, c is 0 or 1, and a, b, and c are not 0 at the same time.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the determining module is specifically configured to: determine all the The average value of RSSI of all radio frames transmitted in an overlapping basic service set OBSS is the interference received by the AP, and the first OBSS is the difference between the first basic service set BSS and the second BSS where the AP is located. intersection, the second BSS is any BSS that does not include the AP.

With reference to the third aspect or the first possible implementation manner or the second possible implementation manner of the third aspect, the third possible implementation manner of the third aspect further includes: a receiving module; the receiving module is configured to receive The average value of RSSIs of all radio frames transmitted in all the second overlapping basic service set OBSSs sent by the STA within the preset time period; the determining module is configured to determine the second OBSS The average value of the RSSI of all radio frames transmitted in the STA is the interference received by the STA, and the second OBSS is the intersection of the third basic service set BSS where the STA is located and the fourth BSS, and the fourth BSS is Either one does not include the STA's BSS.

In a fourth aspect, an embodiment of the present invention provides a channel bonding apparatus, the apparatus is a station STA, and includes: a determining module and a sending module; the determining module is configured to: determine the AP and the The received signal strength of any channel between the station STAs indicates at least one of the average value of RSSI, the interference received by the AP and the interference received by the STA, wherein the average value of the RSSI of any channel is: Average value of RSSI of all downlink radio frames on any channel within the preset time period; according to the average value of RSSI of any channel, the interference received by the AP and the interference received by the STA At least one of the CCA thresholds corresponding to the any channel is determined; the sending module is configured to: send the CCA threshold corresponding to the any channel to the AP, so that the AP detects the any channel The current signal on the channel, and determine whether the preset condition is met, and bundle all the channels that meet the preset condition, wherein the preset condition is: the power value of the current channel is less than or equal to any of the The CCA threshold corresponding to the channel; the uplink radio frame is sent through the bundled channel.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the determining module is specifically configured to: calculate the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; wherein, CCA Represents the CCA threshold corresponding to any channel, ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, and interference2 represents the interference received by the STA, K is a constant, a is 0 or 1, and b is 0 or 1, c is 0 or 1, and a, b, c are not 0 at the same time.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the method further includes: a receiving module; the receiving module is configured to receive the data sent by the AP at the location where the The average value of RSSI of all the radio frames transmitted in all the first overlapping basic service set OBSS in the preset time period; the determining module is used to determine all radio frames transmitted in the first OBSS The average value of RSSI is the interference received by the AP, the first OBSS is the intersection of the first basic service set BSS where the AP is located and the second BSS, and the second BSS is any one that does not include the AP BSs.

With reference to the fourth aspect or the first possible implementation manner or the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the determining module is specifically configured to: determine the predetermined Let the average value of RSSIs of all radio frames transmitted in all the second overlapping basic service set OBSS in the time period be the interference received by the STA, and the second OBSS is the third basic service where the STA is located The intersection of the set BSS and the fourth BSS, where the fourth BSS is any BSS that does not include the STA.

Embodiments of the present invention provide a method and device for channel bonding, wherein the method includes: the AP determines the average value of RSSI of any channel between the AP and a station STA within a preset time period, the interference received by the AP, and the interference received by the STA. At least one of the interference, the AP determines the CCA threshold corresponding to any channel according to at least one of the average value of the RSSI of any channel, the interference received by the AP, and the interference received by the STA; finally, the AP satisfies the current signal Channels whose power value is less than or equal to the CCA threshold corresponding to any channel are bundled, and downlink radio frames are sent through the bundled channel. Since the embodiment of the present invention integrates the RSSI average value of the channel and the interference received by the AP, and further combines the interference received by the STA, the CCA threshold corresponding to the channel in the preset time period is finally determined, so as to effectively realize the channel bundling and improve the performance of the channel. Concurrency of transfers and throughput of the system.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a flowchart of a channel bonding method according to an embodiment of the present invention;

FIG. 2 is a network topology structure diagram 1 according to an embodiment of the present invention;

FIG. 3 is a second network topology structure diagram according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a radio frame provided by an embodiment of the present invention;

5 is a first network topology structure diagram before and after channel bonding according to an embodiment of the present invention;

FIG. 6 is a second network topology structure diagram before and after channel bonding according to an embodiment of the present invention;

FIG. 7 is a network topology structure diagram 3 before and after channel bonding according to an embodiment of the present invention;

FIG. 8 is a fourth network topology structure diagram before and after channel bonding according to an embodiment of the present invention;

FIG. 9 is a network topology structure diagram according to an embodiment of the present invention;

FIG. 10 is a flowchart of a channel bonding method according to another embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a channel bonding apparatus according to an embodiment of the present invention;

12 is a schematic structural diagram of a channel bonding apparatus according to another embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a channel bonding apparatus according to still another embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a channel bonding apparatus according to another embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The technical solution of the present invention is based on the wireless local area network (Wireless Local Area Networks, WLAN for short) technology. In order to solve the problem in the prior art that the AP cannot accurately know the current state of the channel, so that effective channel bonding cannot be performed, thereby reducing the concurrency of transmission and the throughput of the system, an embodiment of the present invention provides a channel bonding method ,details as follows:

Example 1

FIG. 1 is a flowchart of a channel bonding method according to an embodiment of the present invention. The method is executed by an AP, and the application scenario of the method is that the AP prepares to bind at least one channel with the STA, wherein the method Specifically include:

S101: The access point AP determines at least one of the average value of RSSI, the interference received by the AP, and the interference received by the STA in a preset time period of the received signal strength of any channel between the AP and the station STA, wherein The average value of RSSI of any channel is: the average value of RSSI of all uplink radio frames on any channel within a preset time period;

S102: The AP determines the CCA threshold corresponding to the any channel according to at least one of the average value of the RSSI of any channel, the interference received by the AP, and the interference received by the STA;

S103: The AP detects the current signal on any channel, and determines whether a preset condition is met, where the preset condition is: the power value of the current channel is less than or equal to the CCA threshold corresponding to any channel;

S104: The AP binds all channels meeting the preset conditions, and sends downlink radio frames through the bundled channels.

Specifically, channel bundling can improve the concurrency of transmission and the throughput of the system, but it is not suitable for channel bundling under any circumstances. For example, when multiple APs are close to each other, it is easy to cause interference between channels. In this case, it is not suitable for channel bonding. Therefore, the accurate determination of the CCA threshold directly affects whether the AP should perform channel bonding, and determines which channels the AP needs to bond.

The embodiment of the present invention dynamically determines the CCA threshold, mainly by counting the average value of the received signal strength indication (Received Signal Strength Indication, RSSI for short) of any channel between the AP and the station STA within a preset time period, the AP received The CCA threshold is determined by at least one of three factors: the interference received by the STA and the interference received by the STA, and the average value of the RSSI of any channel is: the average RSSI of all uplink radio frames on any channel within a preset time period. value, for example: the average value of the RSSI of the main channel between the AP and the STA is the average value of the RSSI of all the uplink radio frames sent on the main channel within the preset time period. In addition, the interference received by the AP can be determined according to the RSSI of the wireless frame at the intersection of the basic server (Basic Service Set, BSS) where the AP is located and other BSSs, The interference received by the STA can also be determined by calculating the RSSI of the radio frame at the intersection of the BSS where it is located and other BSSs, and by determining the above three factors to determine the CCA threshold corresponding to each channel in the preset time period, of course , the CCA threshold is also determined by the same method in the next preset time period, and each preset time period selected in this embodiment of the present invention may be the same or different, which is not limited herein. After the AP determines the CCA threshold corresponding to each channel through at least one of the above three factors, the AP detects the energy of the current signal on each channel, that is, the power value of the current signal. When the power value is less than or equal to the corresponding CCA threshold, it indicates that the corresponding channel is an idle channel, so the AP can bundle all idle channels. Next, the AP can transmit uplink and downlink wireless frames through the bundled channel.

An embodiment of the present invention provides a channel bundling method, including: first, the AP determines the average value of RSSI of any channel between the AP and a station STA within a preset time period, the interference received by the AP, and the interference received by the STA. At least one, secondly, the AP determines the CCA threshold corresponding to any channel according to at least one of the average value of the RSSI of any channel, the interference received by the AP, and the interference received by the STA; Channels whose power value is less than or equal to the CCA threshold corresponding to any channel are bundled, and downlink radio frames are sent through the bundled channel. Since the embodiment of the present invention integrates the RSSI average value of the channel and the interference received by the AP, and further combines the interference received by the STA, the CCA threshold corresponding to the channel in the preset time period is finally determined, so as to effectively realize the channel bundling and improve the performance of the channel. Concurrency of transfers and throughput of the system.

Embodiment 2

Based on the above embodiment, further, the above step S102 specifically includes: the AP calculates the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; wherein, CCA represents the CCA threshold corresponding to any channel , ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, a is 0 or 1, b is 0 or 1, c is 0 or 1, and a , b, and c are not 0 at the same time. Usually K can take -85dBm.

For example: K=0, a=0, b=0, c=1, the above formula is: CCA=ave_RSSI-interference2, in this case, the factor of AP interference is not considered.

For another example: K=0, a=0, b=1, c=0, the above formula is: CCA=ave_RSSI-interference1, in this case, the factor that the STA is interfered is not considered.

Of course, it can also be K=0, a=1, b=0, c=0, or K=0, a=0, b=1, c=0, or K=0, a=0, b =0, c=1, as long as K is a constant, a, b, and c are 0 or 1, and a, b, and c are not 0 at the same time, which is not limited in this embodiment of the present invention.

Optionally, the AP determines the interference received by the AP, including: the AP determines that the average value of RSSIs of all radio frames transmitted in all the first overlapping basic service set OBSS within a preset time period is the interference received by the AP, The first OBSS is the intersection of the first basic service set BSS where the AP is located and the second BSS, and the second BSS is any BSS that does not include the AP.

For example, FIG. 2 is a network topology diagram 1 provided by an embodiment of the present invention. As shown in FIG. 2 , the first BSS where the AP is located and the two second BSSs that do not include the AP respectively have an intersection, and the intersection exists. That is, the first OBSS. Referring to FIG. 2 , the interference received by the AP in the preset time period is the average value of the RSSIs of all the radio frames transmitted in the two first OBSSs.

Optionally, the AP determines the interference received by the STA, including: the AP receives an average value of RSSIs of all radio frames transmitted in all the second overlapping basic service set OBSS within a preset time period and sent by the STA; the AP determines The average value of RSSI of all radio frames transmitted in the second OBSS is the interference received by the STA, the second OBSS is the intersection of the third basic service set BSS where the STA is located and the fourth BSS, and the fourth BSS is any one that does not include all Describe the BSS of the STA.

For example: FIG. 3 is a network topology diagram 2 provided by an embodiment of the present invention. As shown in FIG. 3 , the third BSS where the STA is located and the two fourth BSSs respectively have an intersection, and the intersection is the second BSS. In the OBSS, referring to FIG. 3 , the interference received by the STA within the preset time is the average value of the RSSIs of all the radio frames transmitted in the two second OBSSs.

Further, after the STA determines the average value of the RSSIs of all radio frames transmitted in the second OBSS, the STA carries the average value into the MAC header of the radio frame and sends it to the AP. Specifically, FIG. 4 is an embodiment of the present invention. A schematic structural diagram of the provided wireless frame, as shown in FIG. 4 , the wireless frame includes frame control, duration or identification, address 1, address 2, address 3, sequence control, frame body, address 4 and frame check (Frame Check Sequence, FCS for short), etc., wherein the average value of RSSI is carried in the frame body. Usually, each STA sends a radio frame including the average value of RSSI to the AP once every preset time period.

Further, the following describes the specific circumstances under which channel binding can be performed:

FIG. 5 is a network topology diagram 1 before and after channel bonding according to an embodiment of the present invention, in which the left side is a topology diagram before channel bonding, the right side is a topology diagram after channel bonding, and the "√" indicates that channel bonding can be performed. Combined with Figure 5, due to the long distance between the three APs, that is, the interference interference1 received by each AP is small, according to the formula: CCA=K+a×ave_RSSI-b×interference1 -c×interference2, the CCA threshold can be relatively large, that is, a loose CCA strategy can be used. Here, it does not distinguish which channel has a relatively large CCA threshold, but all channels have relatively large CCA thresholds. In this case, usually APs It is relatively easy for the detected current signal to be less than or equal to the CCA threshold, so in this case, channel bundling can usually be performed.

6 is a second network topology diagram before and after channel bonding according to an embodiment of the present invention, in which the left side is a topology diagram before channel bonding, the right side is a topology diagram after channel bonding, and the "╳" indicates that channel bonding is not possible. Combined with Figure 6, because the distance between the three APs is relatively short, that is, each AP receives a large interference interference1. According to the formula: CCA=K+a×ave_RSSI-b× interference1-c×interference2, the CCA threshold can be relatively small, that is, a tight CCA strategy can be used. Here, it does not distinguish which channel has a relatively small CCA threshold, but all channels have relatively small CCA thresholds. In this case, usually The current signal detected by the AP cannot easily satisfy the CCA threshold or less, and therefore, channel bonding cannot be performed in this case.

FIG. 7 is a network topology diagram 3 before and after channel bonding according to an embodiment of the present invention, in which the left side is the topology diagram before channel bonding, the right side is the topology diagram after channel bonding, and the "√" indicates that channel bonding can be performed. Referring to Figure 7, STA1 is closer to AP1, and STA2 is closer to AP2. Therefore, the link channel quality between STA1 and AP1 is high, and the interference interference2 is small. The link channel between STA2 and AP2 is high. The quality is also relatively high, and the interference interference2 is small. According to the formula: CCA=K+a×ave_RSSI-b×interference1-c×interference2, the CCA threshold can be relatively large, that is, a loose CCA strategy can be used, which does not distinguish which channel is used here. The CCA threshold is relatively large, but the CCA thresholds of all channels are relatively large. In this case, the current signal detected by the AP is usually less than or equal to the CCA threshold. Therefore, usually in this case, channel bundling can be performed.

8 is a network topology diagram 4 before and after channel bonding according to an embodiment of the present invention, wherein the left side is the topology diagram before channel bonding, the right side is the topology diagram after channel bonding, and the "╳" indicates that channel bonding is not possible. Referring to Figure 8, STA1 is far from AP1, and STA2 is far from AP2. Therefore, the channel quality of the link between STA1 and AP1 is poor, and the interference interference2 is large. The link between STA2 and AP2 is poor. The channel quality is also relatively poor, and the interference interference2 is large. According to the formula: CCA=K+a×ave_RSSI-b×interference1-c×interference2, the CCA threshold can be relatively small, that is, the tight CCA strategy can be used, and the channel is not distinguished here. The CCA threshold is relatively small, but the CCA thresholds of all channels are relatively small. In this case, the current signal detected by the AP is usually less than or equal to the CCA threshold. Therefore, in this case, channel bundling is usually not possible. .

Further, in the above embodiments, the channels between the same AP and the STA are all bundled. In the embodiment of the present invention, the channels between different APs and the STA may be further bundled. For example, FIG. 9 shows In the network topology diagram provided by an embodiment of the present invention, as shown in FIG. 9 , STA1 and STA2 are both within the coverage of AP1 and AP2, RSSI1 represents the average value of the RSSI of the channel between AP1 and STA1, and RSSI3 represents the The interference is equivalent to the interference2 in the formula. Compared with the default fixed CCA threshold of 802.11ac, the CCA threshold of STA1 is calculated to be smaller, so that the transmission of AP1 to STA1 and the transmission of AP2 to STA1 use channel competition, that is, Without channel bonding, RSSI2 represents the average value of RSSI corresponding to the channel between AP1 and STA1, and RSSI4 represents the interference received by the STA, which is equivalent to the interference2 in the formula. Compared with the default fixed CCA threshold of 802.11ac, it is obtained by calculation. The CCA threshold of STA1 is relatively large. Therefore, the transmission of AP1 to STA2 can be synchronized with the transmission of AP2 to STA2, that is, the channel between AP1 and STA2 can be combined with the channel between AP2 and STA2. Thereby increasing the throughput of the system.

In the channel bonding method provided by the embodiment of the present invention, the AP can set a dynamic CCA threshold for each STA. Compared with the prior art, the channel bonding can be improved through a distributed algorithm on the basis of maintaining the existing protocol. post throughput. The reason why the throughput can be improved is that when adjusting the CCA, this scheme takes into account the influence of the network topology, as well as the interference received by the AP and the interference received by the STA.

Embodiment 3

FIG. 10 is a flowchart of a channel bonding method according to another embodiment of the present invention. The method is performed by a STA, and specifically includes:

S1001: The STA determines at least one of the average value of RSSI, the interference received by the AP, and the interference received by the STA of the received signal strength of any channel between the AP and the STA within a preset time period, and the signal strength of any channel is The average value of RSSI is: the average value of RSSI of all downlink radio frames on any channel within a preset time period;

S1002: The STA determines a CCA threshold corresponding to any channel according to at least one of the average value of the RSSI of any channel, the interference received by the AP, and the interference received by the STA;

S1003: The STA sends the CCA threshold corresponding to any channel to the AP, so that the AP detects the current signal on any channel, determines whether the preset condition is met, and bundles all channels that meet the preset condition, wherein the preset The condition is: the power value of the current channel is less than or equal to the CCA threshold corresponding to any channel;

S1004: The STA sends the uplink radio frame through the bundled channel.

Specifically, the accurate determination of the CCA threshold directly affects whether the AP should perform channel bundling, and determines which channels the AP should perform bundling. The embodiment of the present invention dynamically determines the CCA threshold, mainly by counting the average value of the received signal strength indication (Received Signal Strength Indication, RSSI for short) of each channel between the AP and the station STA within a preset time period, the AP received The CCA threshold is determined by at least one of the interference and the interference received by the STA, where the average value of the RSSI of any channel is: the average value of the RSSI of all downlink radio frames on any channel within a preset time period, such as: The average value of the RSSI of the main channel between the AP and the STA is the average value of the RSSI of all the downlink radio frames sent on the main channel within the preset time period. (Media Access Control, MAC for short) header, in addition, the interference received by the AP can be determined according to the RSSI of the radio frame at the intersection of the basic server (Basic Service Set, BSS) where the AP is located and other BSSs. The interference can also be determined by the STA calculating the RSSI of the radio frame at the intersection of the BSS where it is located and other BSSs, and by determining at least one of the above three factors to determine the CCA threshold corresponding to each channel in the preset time period .

The difference between this embodiment and the embodiment corresponding to FIG. 1 is that in the embodiment corresponding to FIG. 1 , the CCA threshold is determined by the average value of the RSSI of the uplink data frame, and finally the downlink data frame is sent through the channel that meets the preset conditions. For example, the CCA threshold is determined by the average value of RSSI of the downlink data frame, and finally the uplink data frame is sent through the channel that satisfies the preset condition.

An embodiment of the present invention provides a channel bundling method, including: first, the STA determines, within a preset time period, the received signal strength of any channel between the AP and the STA indicates the average value of RSSI, the interference received by the AP, and the received signal strength by the STA. At least one of the interferences, wherein the average value of the RSSI of any channel is: the average value of the RSSI of all downlink radio frames on any channel within a preset time period; the STA is based on the average value of the RSSI of any channel , At least one of the interference received by the AP and the interference received by the STA determines the CCA threshold corresponding to any channel; the STA sends the CCA threshold corresponding to any channel to the AP, so that the AP detects the current signal on any channel and judges Whether the preset conditions are met, and all channels that meet the preset conditions are bundled, where the preset conditions are: the power value of the current channel is less than or equal to the CCA threshold corresponding to any channel; the STA sends the uplink wireless through the bundled channel. frame, so as to effectively realize channel bundling, thereby improving the concurrency of transmission and the throughput of the system.

Embodiment 4

Further, the STA determines the CCA threshold corresponding to any channel according to at least one of the average value of the RSSI of any channel, the interference received by the AP, and the interference received by the STA, including: the STA according to CCA=K+a×ave_RSSI-b ×interference1-c×interference2 calculates the CCA threshold; where CCA represents the CCA threshold corresponding to any channel, ave_RSSI represents the average value of the RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, and K is a constant , a is 0 or 1, b is 0 or 1, c is 0 or 1, and a, b, and c are not 0 at the same time.

Optionally, the STA determines the interference received by the AP, including: the STA receives the average value of RSSIs of all radio frames transmitted in all the first overlapping basic service set OBSS sent by the AP within a preset time period; the STA determines The average value of the RSSIs of all radio frames transmitted in the first OBSS is the interference received by the AP, the first OBSS is the intersection of the first basic service set BSS where the AP is located and the second BSS, and the second BSS is any excluding AP BSs.

Optionally, the STA determining the interference received by the STA includes: the STA determines that the average value of RSSIs of all radio frames transmitted in all the second overlapping basic service set OBSS within a preset time period is the average value of the RSSI received by the STA. Interference, the second OBSS is the intersection of the third basic service set BSS where the STA is located and the fourth BSS, and the fourth BSS is any BSS that does not include the STA.

In the channel bonding method provided by the embodiment of the present invention, the STA can obtain the CCA threshold for each preset time period. Compared with the prior art, the channel bonding can be improved through a distributed algorithm on the basis of maintaining the existing protocol. post throughput.

Embodiment 5

FIG. 11 is a schematic structural diagram of a channel bonding device according to an embodiment of the present invention, where the device is an access point AP. As shown in FIG. 11 , the device includes: a determination module 1101 , a detection module 1102 , a binding module 1103 and Sending module 1104; wherein the determining module 1101 is used to: determine the average value of RSSI of any channel received between the AP and the station STA within a preset time period, the interference received by the AP, and the interference received by the STA. At least one, the average value of the RSSI of any one channel is: the average value of the RSSI of all uplink radio frames on any one channel within a preset time period; according to the average value of the RSSI of any one channel, the AP receives At least one of the interference received by the STA and the interference received by the STA determine the CCA threshold corresponding to any channel. The detection module 1102 is used to detect the current signal on any channel, and determine whether the preset condition is met. The preset condition is: the power value of the current signal is less than or equal to the CCA threshold corresponding to any channel; the binding module 1103 is used to All channels that satisfy the preset conditions are bundled, and the sending module 1104 sends downlink radio frames through the bundled channels.

The channel bonding apparatus provided in this embodiment can be used to execute the method steps in the embodiment shown in FIG. 1 , and the implementation principles and technical effects thereof are similar, and details are not described herein again.

Embodiment 6

FIG. 12 is a schematic structural diagram of a channel bonding apparatus according to another embodiment of the present invention, where the apparatus is an access point AP. As shown in FIG. 12 , the apparatus includes: a determination module 1101 , a detection module 1102 , and a bonding module 1103 and the sending module 1104, their functions are the same as those described in the corresponding embodiment in FIG. 11, and details are not repeated here.

Further, the determining module 1101 is specifically configured to: calculate the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; wherein, CCA represents the CCA threshold corresponding to any one of the channels, and ave_RSSI represents all The average value of RSSI of any channel mentioned above, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, a is 0 or 1, b is 0 or 1, c is 0 or 1, and a, b , c is not 0 at the same time.

Optionally, the determining module 1101 is specifically configured to: determine the average value of RSSIs of all radio frames transmitted in all the first overlapping basic service set OBSS within the preset time period as the interference received by the AP , the first OBSS is the intersection of the first basic service set BSS where the AP is located and the second BSS, and the second BSS is any BSS that does not include the AP.

Optionally, the apparatus further includes a receiving module 1105; the receiving module 1105 is configured to receive all the second overlapping basic service set OBSS sent by the STA and transmitted in the preset time period. The average value of the RSSI of the radio frame; the determining module 1101 is configured to determine that the average value of the RSSI of all the radio frames transmitted in the second OBSS is the interference received by the STA, and the second OBSS is the interference received by the STA. The intersection of the third basic service set BSS where the STA is located and the fourth BSS, where the fourth BSS is any BSS that does not include the STA.

The channel bundling apparatus provided in this embodiment can be used to execute the method steps of Embodiment 2, and the implementation principles and technical effects thereof are similar, and are not repeated here.

Embodiment 7

FIG. 13 is a schematic structural diagram of a channel bonding apparatus according to still another embodiment of the present invention, where the apparatus is a station STA. As shown in FIG. 13 , the apparatus includes: a determining module 1301 and a sending module 1302; wherein, the determining module 1301 is used to: determine the average value of the RSSI received by any channel between the AP and the station STA within a preset time period, the interference received by the AP, and the interference received by the STA. At least one of the RSSIs of any one of the channels is: the average of the RSSIs of all downlink radio frames on the any one of the channels within the preset time period; according to the RSSI of the any one of the channels At least one of the average value, the interference received by the AP, and the interference received by the STA determines the CCA threshold corresponding to the any channel; the sending module 1302 is configured to: send the any channel to the AP The CCA threshold corresponding to the channel, so that the AP detects the current signal on any of the channels, judges whether the preset conditions are met, and bundles all the channels that meet the preset conditions, wherein the preset The conditions are: the power value of the current channel is less than or equal to the CCA threshold corresponding to any one of the channels; and the uplink radio frame is sent through the bundled channel.

The channel bonding apparatus provided in this embodiment can be used to execute the method steps in the embodiment shown in FIG. 10 , and the implementation principles and technical effects thereof are similar, and are not repeated here.

Embodiment 8

FIG. 14 is a schematic structural diagram of a channel bonding apparatus according to another embodiment of the present invention, where the apparatus is a STA. As shown in FIG. 14 , the apparatus includes: a determining module 1301 and a sending module 1302, whose functions are the same as those shown in FIG. 13 The functions introduced in the corresponding embodiments are the same, and details are not repeated here.

Further, the determining module 1301 is specifically configured to: calculate the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; wherein, CCA represents the CCA threshold corresponding to any one of the channels, and ave_RSSI represents all The average value of RSSI of any channel mentioned above, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, a is 0 or 1, b is 0 or 1, c is 0 or 1, and a, b , c is not 0 at the same time.

Optionally, the device further includes a receiving module 1303; the receiving module 1303 is configured to receive all the first overlapping basic service set OBSS transmitted by the AP in the preset time period. The average value of the RSSI of the radio frame; the determining module 1301 is configured to determine that the average value of the RSSI of all the radio frames transmitted in the first OBSS is the interference received by the AP, and the first OBSS is the The intersection of the first basic service set BSS where the AP is located and the second BSS, where the second BSS is any BSS that does not include the AP.

Optionally, the determining module 1301 is specifically configured to: determine that the average value of the RSSIs of all the radio frames transmitted in all the second overlapping basic service set OBSS within the preset time period is the average value of the RSSI received by the STA. interference, the second OBSS is the intersection of the third basic service set BSS where the STA is located and the fourth BSS, and the fourth BSS is any BSS that does not include the STA.

The channel bundling apparatus provided in this embodiment can be used to execute the method steps of Embodiment 4, and the implementation principle and technical effect thereof are similar, and are not repeated here.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps including the above method embodiments are executed; and the foregoing storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (12)

1. a channel binding method, is characterized in that, comprises: The access point AP determines that the received signal strength of any channel between the AP and the station STA indicates at least one of the RSSI average value, the interference received by the AP, and the interference received by the STA within a preset time period. One, the average value of the RSSI of any one of the channels is: the average value of the RSSIs of all uplink radio frames on the any one of the channels within the preset time period; determining, by the AP, a CCA threshold corresponding to any one of the channels according to at least one of the average value of the RSSI of the any one of the channels, the interference received by the AP, and the interference received by the STA; The AP detects the current signal on any of the channels, and determines whether a preset condition is met, where the preset condition is: the power value of the current signal is less than or equal to the CCA threshold corresponding to the any of the channels; The AP bundles all channels that meet the preset conditions, and sends downlink radio frames through the bundled channels; The AP determines the CCA threshold corresponding to the any channel according to at least one of the average value of the RSSI of the any channel, the interference received by the AP, and the interference received by the STA, including: The AP calculates the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; Among them, CCA represents the CCA threshold corresponding to any channel, ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, and a is 0 or 1 , b is 0 or 1, c is 0 or 1, and a, b, and c are not 0 at the same time, and b and c are not 0 at the same time. 2. The method according to claim 1, wherein the AP determines the interference received by the AP, comprising: The AP determines that the average value of RSSIs of all radio frames transmitted in all the first overlapping basic service set OBSS within the preset time period is the interference received by the AP, and the first OBSS is the interference received by the AP. The intersection of the first basic service set BSS where the AP is located and the second BSS, where the second BSS is any BSS that does not include the AP. 3. The method according to claim 1, wherein the AP determines the interference experienced by the STA, comprising: receiving, by the AP, the average value of the RSSIs of all radio frames transmitted in the second overlapping basic service set OBSS within the preset time period and sent by the STA; The AP determines that the average value of RSSIs of all radio frames transmitted in the second OBSS is the interference received by the STA, and the second OBSS is the third basic service set BSS and the fourth BSS where the STA is located The intersection of the fourth BSS is any BSS that does not include the STA. 4. A channel bundling method, comprising: The station STA determines at least one of the average value of RSSI, the interference experienced by the AP, and the interference experienced by the STA in a preset time period of the received signal strength indication of any channel between the AP and the station STA , wherein the average value of the RSSI of any channel is: the average value of the RSSI of all downlink radio frames on the any channel within the preset time period; The STA determines the CCA threshold corresponding to any one of the channels according to at least one of the average value of the RSSI of the any one of the channels, the interference received by the AP, and the interference received by the STA; The STA sends the CCA threshold corresponding to the any channel to the AP, so that the AP detects the current signal on the any channel, judges whether the preset conditions are met, and evaluates all the channels that meet the preset conditions. bundling the channels according to the conditions, wherein the preset condition is: the power value of the current channel is less than or equal to the CCA threshold corresponding to any one of the channels; sending, by the STA, an uplink radio frame through the bundled channel; The STA determines the CCA threshold corresponding to the any channel according to at least one of the average value of the RSSI of the any channel, the interference received by the AP, and the interference received by the STA, including: The STA calculates the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; Among them, CCA represents the CCA threshold corresponding to any channel, ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, and a is 0 or 1 , b is 0 or 1, c is 0 or 1, and a, b, and c are not 0 at the same time, and b and c are not 0 at the same time. 5. The method according to claim 4, wherein the STA determines the interference experienced by the AP, comprising: receiving, by the STA, the average value of RSSIs of all radio frames transmitted in all the first overlapping basic service set OBSS within the preset time period and sent by the AP; The STA determines that the average RSSI of all radio frames transmitted in the first OBSS is the interference received by the AP, and the first OBSS is the first basic service set BSS and the second BSS where the AP is located The intersection of the second BSS is any BSS that does not include the AP. 6. The method of claim 4, wherein the STA determines the interference experienced by the STA, comprising: The STA determines that the average value of RSSIs of all radio frames transmitted in all the second overlapping basic service set OBSS within the preset time period is the interference received by the STA, and the second OBSS is the interference received by the STA. The intersection of the third basic service set BSS where the STA is located and the fourth BSS, where the fourth BSS is any BSS that does not include the STA. 7. A channel binding device, the device being an access point AP, characterized in that it comprises: a determining module, a detecting module, a binding module and a sending module; The determining module is used for: Determining at least one of the average value of RSSI, the interference experienced by the AP, and the interference experienced by the STA in the received signal strength indication of any channel between the AP and the station STA within a preset time period, any of which The average value of the RSSI of the channel is: the average value of the RSSI of all uplink radio frames on the any channel within the preset time period; determining a CCA threshold corresponding to any one of the channels according to at least one of the average value of the RSSI of the any one of the channels, the interference received by the AP, and the interference received by the STA; The detection module is used to detect the current signal on any one of the channels, and determine whether a preset condition is met, and the preset condition is: the power value of the current signal is less than or equal to the power value corresponding to the any one of the channels. CCA threshold; the bundling module, configured to bundle all channels that meet the preset conditions, and the sending module sends downlink radio frames through the bundled channels; The determining module is specifically used for: Calculate the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; Among them, CCA represents the CCA threshold corresponding to any channel, ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, and a is 0 or 1 , b is 0 or 1, c is 0 or 1, and a, b, and c are not 0 at the same time, and b and c are not 0 at the same time. 8. The device according to claim 7, wherein the determining module is specifically configured to: Determine the average value of RSSI of all radio frames transmitted in all the first overlapping basic service set OBSS within the preset time period as the interference received by the AP, and the first OBSS is where the AP is located The intersection of the first basic service set BSS and the second BSS, where the second BSS is any BSS that does not include the AP. 9. The device according to claim 7, further comprising: a receiving module; the receiving module, configured to receive the average value of RSSIs of all radio frames transmitted in all the second overlapping basic service set OBSS within the preset time period and sent by the STA; The determining module is configured to determine that the average value of RSSIs of all radio frames transmitted in the second OBSS is the interference received by the STA, and the second OBSS is the third basic service set BSS where the STA is located The intersection with the fourth BSS, where the fourth BSS is any BSS that does not include the STA. 10. A channel binding device, the device being a station STA, characterized in that it comprises: a determining module and a sending module; The determining module is used for: Determining at least one of the average value of RSSI, the interference experienced by the AP, and the interference experienced by the STA in a preset time period of the received signal strength indication of any channel between the AP and the station STA, wherein The average value of the RSSI of any channel is: the average value of the RSSI of all downlink radio frames on the any channel within the preset time period; Determine the CCA threshold corresponding to any one of the channels according to at least one of the average value of the RSSI of the any one of the channels, the interference received by the AP, and the interference received by the STA; The sending module is used for: Send the CCA threshold corresponding to any one of the channels to the AP, so that the AP can detect the current signal on the any of the channels, and determine whether the preset conditions are met, and for all channels that meet the preset conditions bundling, wherein the preset condition is: the power value of the current channel is less than or equal to the CCA threshold corresponding to any one of the channels; Send an uplink radio frame through the bundled channel; The determining module is specifically used for: Calculate the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; Among them, CCA represents the CCA threshold corresponding to any channel, ave_RSSI represents the average value of RSSI of any channel, interference1 represents the interference received by the AP, interference2 represents the interference received by the STA, K is a constant, and a is 0 or 1 , b is 0 or 1, c is 0 or 1, and a, b, and c are not 0 at the same time, and b and c are not 0 at the same time. 11. The apparatus according to claim 10, further comprising: a receiving module; the receiving module, configured to receive the average value of RSSIs of all the radio frames transmitted in all the first overlapping basic service set OBSS in the preset time period and sent by the AP; The determining module is configured to determine that the average value of RSSIs of all radio frames transmitted in the first OBSS is the interference received by the AP, and the first OBSS is the first basic service set BSS where the AP is located The intersection with the second BSS, where the second BSS is any BSS that does not include the AP. 12. The apparatus according to claim 10, wherein the determining module is specifically configured to: Determine that the average value of RSSIs of all radio frames transmitted in all the second overlapping basic service set OBSS within the preset time period is the interference received by the STA, and the second OBSS is where the STA is located The intersection of the third basic service set BSS and the fourth BSS, where the fourth BSS is any BSS that does not include the STA.

Images