WO2015192302A1

WO2015192302A1 - Access point, station, access controller and noise emission method

Info

Publication number: WO2015192302A1
Application number: PCT/CN2014/079967
Authority: WO
Inventors: 曾礼君; 肖文平
Original assignee: 华为技术有限公司
Priority date: 2014-06-16
Filing date: 2014-06-16
Publication date: 2015-12-23
Also published as: CN105453657B; CN105453657A

Abstract

An access point (AP), station, access controller and noise emission method, a solution for the access point comprising: a detecting unit detects the locking level of a receiver of a first STA; a transmitting unit transmits to an AC a locking notification message carrying a locking parameter so that the AC determines scrambling power according to the locking parameter; a receiving unit receives a scrambling control packet carrying the scrambling power transmitted by the AC; according to the scrambling power received by the receiving unit, a power control unit controls a noise generator to emit noise in the cell coverage area of an AP. The solution addresses the problems of high deployment costs and labor costs incurred in the process of increasing the isolation of co-channel access points and increasing the concurrency of closely spaced co-channel access points.

Description

Access point, station, access controller and noise emission method

The present invention relates to the field of communications, and in particular, to an access point AP, a station STA, an access controller AC, and a noise transmitting method.

Background technique

In the era of mobile Internet, wireless local area network (English: Wireless Local Area Network; WLAN) is widely used in enterprise, home and large public places. In a scenario where the demand for throughput is relatively high, such as a gymnasium, the access point (English: Access Point; abbreviation: AP) needs to be deployed very densely, and because of the non-overlapping frequency points available in the 2.4G frequency band There are only three, so there will be a case where the same-frequency AP (AP with the same frequency point) has a small spacing. When the same-frequency AP spacing is small, in order to meet the throughput demand of this scenario, it is necessary to increase the spacing. The concurrency rate between intra-frequency APs.

The prior art mainly improves the inter-frequency AP by using a narrow beam antenna, using an attenuator to reduce the AP's transmit power, installing the antenna under a seat or under the floor, and relying on building or human body blocking to attenuate the signal strength. Isolation, which increases the concurrency rate of inter-frequency APs with smaller spacing, thus meeting the throughput requirements of the application scenario.

However, in the prior art, by increasing the isolation of the same-frequency AP and increasing the concurrency rate of the same-frequency APs with smaller spacing, a demanding installation environment and difficult installation techniques are required, which increases deployment costs and labor costs. .

Summary of the invention

The present invention provides an access point, a station, an access controller, and a noise transmitting method, which solves the problem of deploying the cost in the process of improving the concurrency of the same-frequency AP by increasing the isolation of the same-frequency AP. And the problem of high labor costs.

In a first aspect of the present invention, a first access point (English: Access Point; abbreviation: AP) is provided, which is included in a wireless office i or a network (English: Wireless Local Area) The WLAN system further includes: a first station (English: Station; abbreviation: STA) associated with the first AP, and an access controller (English: Access Controller; referred to as: AC);

The first AP includes: a detecting unit, a sending unit, a receiving unit, and a power control unit;

The detecting unit is configured to detect a degree that the receiver of the first STA is locked; the sending unit is configured to send, to the AC, a lock notification message carrying a lock parameter, so that the AC is configured according to the lock parameter Determining a scrambling power; wherein the locking parameter is used to indicate a degree to which the receiver of the first STA is locked;

The receiving unit is configured to receive a scrambling control message that is sent by the AC and that carries the scrambled power;

The power control unit is configured to control, according to the scrambled power received by the receiving unit, a noise generator to transmit noise in a coverage area of a cell where the first AP is located.

In conjunction with the first aspect of the invention, in a first possible implementation,

The first AP further includes: an obtaining unit and an adjusting unit;

The acquiring unit is configured to acquire a signal strength of the channel, where the signal strength of the channel includes an interference signal strength and a useful signal strength;

The sending unit is further configured to send, to the AC, a signal strength of the channel acquired by the acquiring unit, so that the AC determines, according to a signal strength of the channel, a transceiving parameter of the first AP. a first threshold value, wherein a first threshold value of the transceiver parameter is greater than an intensity of the interference signal and less than an intensity of the useful signal;

The receiving unit is further configured to receive the first threshold value that is sent by the AC, and the adjusting unit is configured to adjust, by the second threshold value, the transceiver parameter of the first AP to the first threshold The threshold value is: the second threshold value is a current threshold value of the transceiver parameter of the first AP.

In conjunction with the first possible implementation of the first aspect of the present invention, in a second possible implementation, The transmit and receive parameters of the first AP include a channel idle assessment (CSA) threshold of the first AP, and the WLAN system further includes: a second AP, the second AP, and the The first AP has the same-frequency interference; the acquiring unit is further configured to: after the adjusting unit adjusts the sending and receiving parameters of the first AP by using the second threshold to the first threshold, re-acquiring The signal strength of the channel;

The sending unit is further configured to: when the signal strength of the channel acquired by the acquiring unit is less than a first threshold value of a CCA threshold of the first AP, being the same as or overlapping with the second AP During the sending time period, downlink data is sent to the first STA through the channel.

In conjunction with the first possible implementation of the first aspect of the present invention, in a third possible implementation,

The receiving and receiving parameters of the first AP include the receiving sensitivity of the first AP, and the WLAN system further includes: a second STA, where the second STA and the first STA have co-channel interference;

The first AP further includes: a demodulation unit;

The demodulation unit is configured to: after the adjusting unit adjusts the transceiving parameter of the first AP from the second threshold to the first threshold, according to the receiving sensitivity of the first AP And a threshold value, the uplink data sent by the first STA is demodulated; wherein the uplink data is sent by the first STA in a sending time period that is the same as or overlaps with the second STA.

In conjunction with the first aspect of the present invention, the first possible implementation of the first aspect, or the third possible implementation, in a fourth possible implementation,

The detecting unit is configured to send a detection message to the first STA, and calculate a packet return rate of the first STA for the detection message within a preset time period;

The sending unit is specifically configured to carry the return rate obtained by the detecting unit to the AC in the lock notification message.

With reference to the first aspect of the present invention, the first possible implementation of the first aspect, or the third possible implementation manner, in a fifth possible implementation manner, The detecting unit is configured to send a detection message to the first STA, and collect a packet return rate of the first STA for the detection packet in a preset time period; and acquire the packet with the packet a value corresponding to a degree to which the receiver of the first STA is locked;

The sending unit is configured to: carry the value of the extent to which the receiver of the first STA corresponding to the packet return rate obtained by the detecting unit is locked in the lock notification message, and send the message to the Said AC.

With reference to the first aspect of the present invention, the first possible implementation manner of the first aspect, and the fifth possible implementation manner, in a sixth possible implementation manner,

The first AP further includes: a radio frequency control unit;

The radio frequency control unit is configured to control the noise generator to transmit the noise within a cell coverage range in which the first AP is located within a short frame interval (English: Short Interframe Space; SIFS) interval.

A second aspect of the present invention provides a first station (English: Station; abbreviation: STA), which is included in a wireless office i or a network (English: Wireless Local Area Network; WLAN) system, and the WLAN system further The first STA includes: a first access point (English: Access Point; abbreviation: AP) and an access controller (English: Access Controller; abbreviation: AC); the first STA includes: Unit or first demodulation unit;

The processing unit is configured to: after the first AP control noise generator emits noise in a cell coverage area where the first AP is located, increase a threshold value of the sending and receiving parameters of the first STA according to the noise ;

Or the first demodulation unit, configured to: after the first AP controls the noise generator to transmit the noise in a cell coverage area where the first AP is located, demodulate the first AP sending The downlink data is sent by the first AP in the same or overlapping time period as the second AP, and the first AP and the second AP have the same frequency interference;

The noise is that the first AP controls the coverage of the cell where the first AP is located after receiving the scrambling control message of the AC. Emitted inside.

In conjunction with the second aspect of the present invention, in a first possible implementation,

The receiving and receiving parameters of the first STA include the receiving sensitivity of the first STA. When the first STA includes the processing unit, the first STA further includes: a second demodulating unit;

The second demodulation unit is configured to: after the processing unit increases a threshold value of the transceiver parameter of the first STA according to the noise, according to the improved first STA of the processing unit The downlink data is sent by the first AP, and the downlink data is sent by the first AP in the same or overlapping transmission period as the second AP.

In conjunction with the second aspect of the present invention, in a second possible implementation,

The transmit and receive parameters of the first STA include a channel idle assessment (CCA) threshold of the first STA, and the WLAN system further includes: a second STA, the second STA, and the The first STA has co-channel interference;

When the first STA includes the processing unit, the first STA further includes: an acquiring unit and a sending unit;

The acquiring unit is configured to acquire a signal strength of the channel after the processing unit increases a threshold value of the sending and receiving parameters of the first STA according to the noise;

The sending unit is configured to: when the signal strength of the channel is less than a threshold value of the CSA threshold of the first STA that is increased, in a sending period that is the same as or overlaps with the second STA, The channel transmits uplink data to the first AP.

A third aspect of the present invention provides a controller (English: Access Controller; abbreviation: AC), which is included in a wireless local area network (English: Wireless Local Area Network; WLAN) system, and the WLAN system further includes : a first access point (English: Access Point; abbreviation: AP), and a first site associated with the first AP (English: Station; abbreviation: STA);

The AC includes: a receiving unit, a determining unit, and a sending unit or a power control unit; The receiving unit is configured to receive a lock notification message that carries the lock parameter sent by the first AP, where the lock parameter is used to indicate a degree to which the receiver of the first STA is locked;

The determining unit is configured to determine a scramble power according to the locking parameter received by the receiving unit;

The sending unit is configured to carry the scrambled power obtained by the determining unit in a scrambling control message and send the signal to the first AP, so that the first AP controls noise according to the scrambling power. The generator transmits noise in a coverage area of the cell where the first AP is located; or the power control unit is configured to control the noise generator in the first according to the scramble power obtained by the determining unit The noise is transmitted within the coverage of the cell in which the AP is located.

A fourth aspect of the present invention provides a method for transmitting a noise, which is applied to a wireless local area network (English: Wireless Local Area Network; WLAN) system, where the WLAN system includes: a first access point (English: Access Point; : AP), a first site (English: Station; abbreviation: STA) associated with the first AP, and an access controller (English: Access Controller; abbreviation: AC); the method includes:

The first AP detects a degree to which the receiver of the first STA is locked; the first AP sends a lock notification message carrying a lock parameter to the AC, so that the AC determines a scramble power according to the lock parameter. Wherein the locking parameter is used to indicate a degree to which the receiver of the first STA is locked;

Receiving, by the first AP, a scrambling control message that is sent by the AC and carrying the scrambled power;

The first AP controls the noise generator to emit noise within a coverage area of the cell in which the first AP is located according to the scrambling power.

In conjunction with the fourth aspect of the present invention, in a first possible implementation,

The method further includes:

The first AP acquires a signal strength of the channel, where the signal strength of the channel includes an interference signal strength and a useful signal strength; Transmitting, by the first AP, the signal strength of the channel to the AC, so that the AC determines a first threshold value of a transceiving parameter of the first AP according to a signal strength of the channel; The first threshold value of the transceiver parameter is greater than the strength of the interference signal and less than the strength of the useful signal;

Receiving, by the first AP, the first threshold value sent by the AC;

The first AP adjusts the transceiving parameter of the first AP to the first threshold by using a second threshold; wherein the second threshold is a current parameter of the first AP Threshold.

In conjunction with the first possible implementation of the fourth aspect of the present invention, in a second possible implementation,

The transmit and receive parameters of the first AP include a channel idle assessment (CSA) threshold of the first AP, and the WLAN system further includes: a second AP, the second AP, and the The first AP has the same-frequency interference; after the first AP adjusts the transceiving parameter of the first AP by the second threshold to the first threshold, the method further includes:

Reaching, by the first AP, a signal strength of the channel;

When the signal strength of the channel is smaller than the first threshold of the CCA threshold of the first AP, the first AP passes through the channel in a transmission period that is the same as or overlaps with the second AP. The first STA sends downlink data.

In conjunction with the first possible implementation of the fourth aspect of the present invention, in a third possible implementation,

The receiving and receiving parameters of the first AP include the receiving sensitivity of the first AP, and the WLAN system further includes: a second S TA , where the second S TA and the first S TA have co-channel interference;

After the first AP adjusts the transceiving parameter of the first AP to the first threshold, the method further includes:

The first AP demodulates the uplink data sent by the first STA according to the first threshold of the receiving sensitivity of the first AP, where the uplink data is the first S TA and the The second STA is transmitted within the same or overlapping transmission time period. With reference to the fourth aspect of the present invention, the first possible implementation manner of the fourth aspect, and the third possible implementation manner, in a fourth possible implementation manner,

The first AP detects the extent to which the receiver of the first STA is locked, and includes: the first AP sends a probe message to the first STA, and collects the first

The ratio of the packet to the probe packet in the preset time period;

Sending, by the first AP, a lock notification message carrying a lock parameter to the AC, including:

The first AP carries the packet return rate in the lock notification message and sends the packet to the AC.

With reference to the fourth aspect of the present invention, any one of the first possible implementation to the third possible implementation of the fourth aspect, in a fifth possible implementation manner,

The first AP detects the extent to which the receiver of the first STA is locked, and includes: the first AP sends a probe message to the first STA, and collects statistics, by the first STA, in a preset time period. a packet return rate for the probe text;

And obtaining, by the first AP, a degree of a degree of locking of the receiver of the first STA corresponding to the packet return rate;

The first AP carries the value of the extent to which the receiver of the first STA corresponding to the packet return rate is locked in the lock notification message to the AC.

With reference to the fourth aspect of the present invention, the first possible implementation manner of the fourth aspect, and the fifth possible implementation manner, in a sixth possible implementation manner,

The first AP, according to the scrambling power, controls the noise generator to transmit noise in a coverage area of the cell where the first AP is located, including:

And controlling, according to the scrambling power, the noise generator to transmit the noise in a cell coverage range in which the first AP is located within a short interframe space (English: Short Interframe Space; SIFS) interval.

According to a fifth aspect of the present invention, a noise emission method is provided for use in a wireless local area The WLAN system includes: a first access point (English: Access Point; abbreviation: AP), and a first site associated with the first AP ( English: Station; abbreviation: STA), and access controller (English: Access Controller; abbreviation: AC); the method includes:

After the first AP controls the noise generator to transmit the noise in a cell coverage range in which the first AP is located, the first STA increases a threshold of transmitting and receiving parameters of the first STA according to the noise. Limit value

Or after the first AP controls the noise generator to transmit the noise in the coverage of the cell where the first AP is located, the first STA demodulates the downlink data sent by the first AP; The downlink data is sent by the first AP in the same or overlapping time period as the second AP, and the first AP and the second AP have the same frequency interference;

The noise is that the first AP, after receiving the scrambling control message of the AC, controls the noise generator to be transmitted in a coverage area of the cell where the first AP is located.

In conjunction with the fifth aspect of the present invention, in a first possible implementation,

The receiving and receiving parameters of the first STA include the receiving sensitivity of the first STA; when the first STA increases the threshold of the sending and receiving parameters of the first STA according to the noise, then the first STA After the threshold value of the transceiver parameter of the first STA is increased according to the noise, the method further includes:

The first STA demodulates the downlink data sent by the first AP according to the threshold value of the received sensitivity of the first STA, where the downlink data is the first AP and the The second AP is sent in the same or overlapping transmission time period.

In conjunction with the fifth aspect of the present invention, in a second possible implementation,

The transmit and receive parameters of the first STA include a channel idle assessment (CCA) threshold of the first STA, and the WLAN system further includes: a second STA, the second STA, and the The first STA has co-channel interference; After the first STA increases the threshold value of the transceiving parameter of the first STA according to the noise, after the first STA increases the threshold value of the transceiving parameter of the first STA according to the noise, Also includes:

The first STA acquires a signal strength of the channel;

When the signal strength of the channel is less than the threshold of the CCA threshold of the first STA, the first STA passes the channel during a transmission period that is the same as or overlaps with the second STA. Sending uplink data to the first AP.

A sixth aspect of the present invention provides a method for transmitting a noise, which is applied to a wireless local area network (English: Wireless Local Area Network; WLAN) system, where the WLAN system includes: a first access point (English: Access Point; : AP), a first site (English: Station; abbreviation: STA) associated with the first AP, and an access controller (English: Access Controller; abbreviation: AC); the method includes:

Receiving, by the AC, a lock notification message that carries a lock parameter sent by the first AP, where the lock parameter is used to indicate a degree to which the receiver of the first STA is locked;

The AC determines a scrambling power according to the locking parameter;

The AC carries the scrambled power in a scrambling control message and sends the signal to the first AP, so that the first AP controls the noise generator at the first AP according to the scramble power. Transmitting noise within the coverage of the cell; or, the AC controls the noise generator to transmit noise within a coverage area of the cell where the first AP is located according to the scrambling power.

A seventh aspect of the present invention provides a first access point (English: Access Point; abbreviation: AP), which is included in a wireless office i or network (English: Wireless Local Area Network; WLAN) system, the WLAN The system further includes: a first station (English: Station; abbreviation: STA) associated with the first AP, and an access controller (English: Access Controller; abbreviation: AC);

The first AP includes: a processor, a transmitter, and a receiver;

The processor is configured to detect a degree to which the receiver of the first STA is locked; The transmitter is configured to send a lock notification message carrying a lock parameter to the AC, so that the AC determines a scramble power according to the lock parameter, where the lock parameter is used to indicate receiving by the first STA The extent to which the machine is locked;

The receiver is configured to receive a scrambling control message that is sent by the AC and that carries the scrambled power;

The processor is further configured to control the noise generator to emit noise in a coverage area of the cell where the first AP is located according to the scrambled power received by the receiver.

With reference to the seventh aspect of the present invention, in a first possible implementation, the processor is further configured to acquire a signal strength of a channel, where a signal strength of the channel includes an interference signal strength and a useful signal strength;

The transmitter is further configured to send a signal strength of the channel acquired by the processor to the AC, so that the AC determines, according to a signal strength of the channel, a transceiving parameter of the first AP. a first threshold value, where the first threshold value of the transceiver parameter is greater than the strength of the interference signal and less than the strength of the useful signal; the receiver is further configured to receive the location of the AC transmission The first threshold is used; the processor is further configured to: adjust, by the second threshold, the transceiver parameter of the first AP to the first threshold; wherein, the second threshold is The current threshold of the transmit and receive parameters of the first AP.

With reference to the first possible implementation manner of the seventh aspect of the present invention, in a second possible implementation manner,

The transmit and receive parameters of the first AP include a channel idle assessment (CSA) threshold of the first AP, and the WLAN system further includes: a second AP, the second AP, and the The first AP has the same-frequency interference; the processor is further configured to re-acquire the signal of the channel after adjusting the transceiver parameter of the first AP by using the second threshold to the first threshold The transmitter is further configured to be the same as the second AP when the signal strength of the channel acquired by the processor is less than a first threshold of a CCA threshold of the first AP During the overlapping transmission period, downlink data is sent to the first STA through the channel. With reference to the first possible implementation manner of the seventh aspect of the present invention, in a third possible implementation manner,

The processor is further configured to: after adjusting a transceiving parameter of the first AP by using a second threshold to the first threshold, according to a first threshold of a receiving sensitivity of the first AP And demodulating the uplink data sent by the first STA, where the uplink data is sent by the first STA in a sending period that is the same as or overlapping with the second STA.

With reference to the seventh aspect of the present invention, the first possible implementation of the seventh aspect to any one of the third possible implementation manners, in a fourth possible implementation manner,

The processor is configured to send a probe packet to the first STA, and collect statistics on a packet return rate of the probe message in the preset time period.

The transmitter is specifically configured to carry the packet return rate obtained by the processor to the AC in the lock notification message.

With reference to the seventh aspect of the present invention, the first possible implementation of the seventh aspect to any one of the third possible implementation manners, in a fifth possible implementation manner,

The processor is configured to send a detection packet to the first STA, and collect a packet return rate of the first STA for the detection packet in a preset time period; and acquire the packet with the packet a value of the extent to which the receiver of the first STA is locked, and the transmitter is specifically configured to receive, by the processor, the first STA corresponding to the packet return rate The value of the extent to which the machine is locked is carried in the lock notification message and sent to the AC.

With reference to the seventh aspect of the present invention, any one of the first possible implementation manner of the seventh aspect to the fifth possible implementation manner, in the sixth possible implementation manner,

The processor is further configured to control the noise generator to transmit the noise within a cell coverage range in which the first AP is located within a short interframe space (English: Short Interframe Space; SIFS) interval. An eighth aspect of the present invention provides a first station (English: Station; abbreviation: STA), which is included in a wireless local area network (English: Wireless Local Area Network; WLAN) system, and the WLAN system further includes a first access point (English: Access Point; abbreviation: AP) and an access controller (English: Access Controller; abbreviation: AC) associated with the first STA; the first STA includes: a processor ;

The processor, configured to: after the first AP control noise generator emits noise in a cell coverage area where the first AP is located, increase a threshold value of the transceiver parameter of the first STA according to the noise ;

Or the processor, configured to: after the first AP controls the noise generator to transmit the noise in a cell coverage area where the first AP is located, demodulate downlink data sent by the first AP The downlink data is sent by the first AP in the same or overlapping time period as the second AP, and the first AP and the second AP have the same frequency interference;

In conjunction with the eighth aspect of the present invention, in a first possible implementation,

The receiving and receiving parameters of the first STA include the receiving sensitivity of the first STA; when the processor is configured to increase a threshold value of the sending and receiving parameters of the first STA according to the noise, the processor further uses Demodulating the downlink sent by the first AP according to the obtained threshold value of the received sensitivity of the first STA after the threshold value of the receiving and receiving parameters of the first STA is increased according to the noise. Data; wherein the downlink data is sent by the first AP in a sending time period that is the same as or overlaps with the second AP.

In conjunction with the eighth aspect of the present invention, in a second possible implementation,

The transmit and receive parameters of the first STA include a channel idle assessment (CCA) threshold of the first STA, and the WLAN system further includes: a second STA, the second STA, and the The first STA has the same frequency Interference

When the processor is configured to increase a threshold value of the sending and receiving parameters of the first STA according to the noise, the first STA further includes: a transmitter;

The processor is further configured to acquire a signal strength of the channel after increasing a threshold value of the transmit and receive parameters of the first STA according to the noise;

The transmitter is configured to: when the signal strength of the channel is less than a threshold value of the CSA threshold of the first STA that is raised, in a transmission period that is the same as or overlaps with the second STA, The channel transmits uplink data to the first AP.

According to a ninth aspect of the present invention, an access controller (English: Access Controller; abbreviation: AC) is provided, which is included in a wireless office i or network (English: Wireless Local Area Network; WLAN) system, and the WLAN system The method includes: a first access point (English: Access Point; abbreviation: AP), and a first site associated with the first AP (English: Station; abbreviation: STA);

The AC includes: a receiver, a processor, or a transmitter;

The receiver is configured to receive a lock notification message that is sent by the first AP and that carries a lock parameter, where the lock parameter is used to indicate a degree to which the receiver of the first STA is locked;

The processor is configured to determine a scramble power according to the locking parameter received by the receiver;

The transmitter is configured to carry the scrambled power obtained by the processor in a scrambling control message and send the signal to the first AP, so that the first AP controls noise according to the scrambled power. The generator is configured to transmit noise in a coverage area of the cell where the first AP is located; or the processor is further configured to control, according to the scrambled power, the coverage of the cell where the first AP is located The noise is emitted within the range.

The access point, the station, the access controller and the noise transmitting method provided by the present invention firstly detect the extent to which the receiver of the first STA is locked, and then the degree of indicating that the receiver of the first STA is locked The locking parameter is reported to the AC, so that the AC determines the scrambling power according to the locking parameter, and sends the scrambling control message carrying the scrambling power to the first AP, and the first AP can control the noise according to the scrambling power. Device The noise is transmitted within the coverage of the cell in which the first AP is located. The first AP controls the noise generator to transmit noise in the coverage of the cell where the first AP is located, so that the first AP only demodulates when the downlink data is sent in the same or overlapping transmission period as the second AP. The downlink data sent by the first AP is not demodulated, and the downlink data sent by the second AP is not demodulated, thereby improving the concurrency rate of the intra-frequency APs with smaller spacing, thereby satisfying the demand for the throughput of the application scenario, and the prior art. By increasing the isolation of the same-frequency AP and improving the concurrency rate of the same-frequency AP with smaller spacing, the deployment cost and labor cost are reduced, and the throughput and spectrum utilization of the system are improved.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic structural diagram of a device of a first AP according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a device configuration of another first AP according to an embodiment of the present invention;

3 is a schematic diagram of a device composition of a first STA according to another embodiment of the present invention;

FIG. 4 is a schematic diagram of a device composition of another first STA according to another embodiment of the present invention; FIG.

FIG. 5 is a flowchart of a method for transmitting a noise according to another embodiment of the present invention; FIG. 6 is a flowchart of a method for transmitting a noise according to another embodiment of the present invention; FIG. 8 is a flowchart of another method for transmitting a noise according to another embodiment of the present invention; FIG. 9 is a schematic structural diagram of a device for a first AP according to another embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a device of a first STA according to another embodiment of the present invention; FIG. 11 is a schematic structural diagram of an AC device according to another embodiment of the present invention; FIG. 12 is a schematic structural diagram of an AC device according to another embodiment of the present invention. detailed description

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

In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist separately. B these three situations. In addition, the character " /" in this article generally indicates that the contextual object is an "or" relationship.

In the current WLAN system, the WLAN air interface uses the 802.1 1 protocol. WLAN devices using this protocol are peer-to-peer. When WLAN devices need to transmit data, they use Carrier Sense Multiple Access/Collision Sense (CSMA/CS). The contending mechanism occupies the channel in a time division manner, where the WLAN device is an AP or an STA. For example, when the WLAN device is an AP, before the AP needs to send data, it first determines whether the channel is idle by detecting whether the signal strength of the channel is lower than the CCA threshold. When the AP detects that the signal strength of the channel is lower than the CCA threshold, it determines that the channel is idle, and then can transmit data through the channel.

In an application scenario where the throughput rate is relatively high, such as a gymnasium, in order to meet the throughput requirements of the application scenario, it is necessary to increase the concurrency rate between intra-frequency APs with smaller spacing. The prior art improves the concurrency between intra-frequency APs with smaller inter-frequency APs by increasing the isolation between intra-frequency APs to meet the throughput requirements of the application scenario. However, if the isolation between intra-frequency APs is not high, Inter-APs with smaller spacing will still interfere with each other. For example, AP I and AP 2 belong to the same-frequency AP, and the distance between AP I and AP2 is small. If the terminal receives the WLAN packet sent by AP I, and the signal strength of the WLAN packet sent by AP I If the receiving sensitivity of the terminal is higher than the receiving sensitivity of the terminal, the terminal demodulates the WLAN message sent by the AP I in the packet of the WLAN packet sent by the AP I. The WLAN packet sent by AP2, and the signal strength of the WLAN packet sent by AP2 is much stronger than the WLAN text signal sent by AP I. Because the terminal is demodulating the WLAN packet sent by AP 1 during this time, it will not The WLAN packet sent by AP2 is detected, and the WLAN packet sent by AP I is demodulated due to strong interference from the WLAN packet sent by AP2. Therefore, in the process of increasing the concurrency rate of the same-frequency APs with smaller spacing, the isolation requirement of the same-frequency AP is particularly high, which results in higher deployment costs and labor costs.

The first AP controls the noise generator to transmit noise in the coverage of the cell where the first AP is located, so that the first AP is in the second AP (the second AP is the AP with the same frequency interference as the first AP). When the downlink data is sent in the same or overlapping transmission time period, the first STA (the STA is the STA associated with the first AP) demodulates only the downlink data sent by the first AP, and does not demodulate the second AP transmission. Downstream data, which improves the concurrency rate of the same-frequency APs with smaller spacing, and satisfies the demand for throughput in the application scenario. Compared with the prior art, the isolation of the same-frequency AP is improved, and the intra-frequency AP with smaller spacing is improved. Compared with the concurrency rate, the deployment cost and labor cost are reduced.

For the purpose of facilitating the understanding of those skilled in the art, the specific implementation process of the technical solution provided by the present invention may refer to the following embodiments provided by the present invention.

An embodiment of the present invention provides a first AP, which is included in a WLAN system, and the WLAN system may further include: a first STA associated with the first AP, and an AC.

As shown in FIG. 1, the first AP may include: a detecting unit 1 1, a transmitting unit 12, a receiving unit 13, and a power control unit 14.

The detecting unit 1 1 is configured to detect the extent to which the receiver of the first STA is locked.

The sending unit 12 is configured to send a lock notification message carrying the lock parameter to the AC, so that the AC determines the scramble power according to the lock parameter; wherein the lock parameter is used to indicate the extent to which the receiver of the first STA is locked.

The receiving unit 13 is configured to receive a scrambling control report that carries the scrambled power sent by the AC. Text.

The power control unit 14 is configured to control the noise generator to emit noise in a coverage area of the cell where the first AP is located according to the scramble power received by the receiving unit 13.

Further, as shown in FIG. 2, the first AP may further include: an obtaining unit 15 and an adjusting unit 16.

The obtaining unit 15 is configured to acquire a signal strength of the channel, where the signal strength of the channel includes the interference signal strength and the useful signal strength.

The sending unit 12 is further configured to send the signal strength of the channel acquired by the obtaining unit 15 to the AC, so that the AC determines a first threshold value of the transceiver parameter of the first AP according to the signal strength of the channel; A threshold is greater than the strength of the interfering signal and less than the strength of the useful signal.

The receiving unit 13 is further configured to receive a first threshold value sent by the AC.

The adjusting unit 16 is configured to adjust the transceiver parameter of the first AP to a first threshold value by using a second threshold value, where the second threshold value is a current threshold value of the transceiver parameter of the first AP.

Further, optionally, the sending and receiving parameters of the first AP include a channel idle evaluation CCA threshold of the first AP, and the WLAN system may further include: a second AP, where the second AP and the first AP have co-channel interference.

The obtaining unit 15 is further configured to reacquire the signal strength of the channel after the adjusting unit 16 adjusts the transceiving parameter of the first AP from the second threshold to the first threshold.

The sending unit 12 is further configured to: when the signal strength of the channel acquired by the acquiring unit 15 is smaller than the first threshold value of the CCA threshold of the first AP, in the same or overlapping transmission time period as the second AP, The first STA sends downlink data.

Further, the receiving and receiving parameters of the first AP include the receiving sensitivity of the first AP, and the WLAN system may further include: a second STA, where the second STA has the same frequency interference as the first STA.

The first AP may further include: a demodulation unit 17.

The demodulation unit 17 is configured to: after the adjusting unit 16 adjusts the transceiving parameter of the first AP from the second threshold to the first threshold, according to the first receiving sensitivity of the first AP The threshold value is used to demodulate the uplink data sent by the first STA. The uplink data is sent by the first STA in the same or overlapping transmission period as the second STA.

Further, the detecting unit 1 1 is configured to send a probe message to the first STA, and collect a packet return rate for the probe message in the preset time period.

The sending unit 12 is specifically configured to carry the packet return rate obtained by the detecting unit 1 1 in the lock notification message and send it to the AC.

Further, the detecting unit 1 1 is configured to send a detection message to the first STA, and collect a packet return rate of the first STA for the probe text in a preset time period; and obtain a number corresponding to the packet return rate. The degree to which the receiver of a STA is locked.

The sending unit 12 is specifically configured to carry the value of the extent to which the receiver of the first STA corresponding to the packet return rate obtained by the detecting unit 1 1 is locked in the lock notification message to the AC.

Further, the first AP may further include: a radio frequency control unit 18.

The radio frequency control unit 18 is configured to control the noise generator to emit noise within the SIFS interval and within the coverage of the cell where the first AP is located.

It should be noted that when the first AP controls the noise generator to transmit noise only through the power control unit 14 of the first AP, in a possible implementation manner in the embodiment of the present invention, the noise may be used according to the requirements of the actual application scenario. The generator and the first AP respectively configure one antenna; when the first AP controls the noise generator to transmit noise through the power control unit 14 and the radio frequency control unit 18 of the first AP, a possible implementation manner in the embodiment of the present invention The same antenna can be configured for the noise generator and the first AP according to the requirements of the actual application scenario.

It should be noted that, in the embodiment of the present invention, when the first AP and the second AP are configured with the same frequency, and the distance between the first AP and the second AP is small, the first AP and the second AP may be considered to be the same. Frequency interference. When the first STA and the second STA have the same frequency, and the first STA and the second STA are relatively small, the first STA and the second STA may be considered to have co-channel interference.

It should be noted that the embodiment provided by the present invention can be applied to an application scenario where the throughput requirement is relatively high, such as a high-density deployment or a non-high-density deployment. The application scenario of the embodiment provided by the present invention is not specifically limited.

The first AP provided by the embodiment of the present invention first detects the degree to which the receiver of the first STA associated with the first AP is locked, and then reports the locking parameter for indicating the degree to which the receiver of the first STA is locked. AC, so that the AC determines the scrambling power according to the locking parameter, and sends the scrambling control message carrying the scrambled power to the first AP, and the first AP can control the noise generator according to the scrambling power. The noise is transmitted within the coverage of the cell where the AP is located. The first STA only demodulates the first AP by controlling the noise generator to transmit noise within the coverage of the cell in which the first AP is located, so that the first AP transmits downlink data in the same or overlapping transmission period as the second AP. The downlink data sent by the second AP is not demodulated, thereby improving the concurrency rate of the intra-frequency APs with smaller spacing, thereby satisfying the requirement of the throughput of the application scenario, and improving the same with the prior art. The isolation of the frequency AP improves the deployment cost and labor cost compared with the concurrency rate of the same-frequency AP with smaller spacing, and improves the throughput and frequency utilization of the system.

Moreover, the first AP adjusts its own receiving sensitivity from the second threshold to the first threshold under the control of the AC, so that the first STA sends the uplink in the same or overlapping transmission period as the second STA. When the data is used, the first AP demodulates the uplink data sent by the first STA, so that the concurrency rate between STAs with co-channel interference is improved, and the throughput and spectrum utilization rate of the system are further improved.

Another embodiment of the present invention provides a first STA, which is included in a WLAN system of a wireless local area network, and the WLAN system may further include: a first AP and an AC associated with the first STA.

As shown in FIG. 3, the first STA may include: a processing unit 21 or a first demodulation unit 22.

The processing unit 21 is configured to: after the first AP control noise generator emits noise in a cell coverage area where the first AP is located, increase a threshold value of the transmit and receive parameters of the first STA according to the noise.

Or the first demodulation unit 22 is configured to: after the first AP control noise generator emits noise in a cell coverage area where the first AP is located, demodulate the first AP to send the The downlink data is sent by the first AP in the same or overlapping transmission period as the second AP, and the first AP and the second AP have the same-frequency interference.

The noise is that the first AP, after receiving the scrambling control message of the AC, controls the noise generator to be transmitted in the coverage of the cell where the first AP is located.

Further optionally, the transceiving parameter of the first STA may include the receiving sensitivity of the first STA.

When the first STA includes the processing unit 21, as shown in FIG. 4, the first STA further includes: a second demodulation unit 23.

The second demodulation unit 23 is configured to, after the processing unit 21 increases the threshold value of the transmission and reception parameters of the first STA according to the noise, demodulate according to the threshold value of the received sensitivity of the improved first STA obtained by the processing unit 21 Downlink data sent by the first AP; where the downlink data is sent by the first AP in the same or overlapping transmission period as the second AP.

Further, optionally, the sending and receiving parameters of the first STA may include a CCA threshold of the first STA, and the WLAN system may further include: a second STA, where the second STA has co-channel interference with the first STA.

When the first STA includes the processing unit 21, the first STA may further include: an obtaining unit 24 and a transmitting unit 25.

The obtaining unit 24 is configured to acquire the signal strength of the channel after the processing unit 21 increases the threshold of the transmission and reception parameters of the first STA according to the noise.

The sending unit 25 is configured to: when the signal strength of the channel is less than a threshold value of the CSA threshold of the first STA, the uplink data is sent to the first AP by using a channel in a sending time period that is the same as or overlapping with the second STA. .

It should be noted that when the first AP controls the noise generator to transmit noise only through the power control unit 14 of the first AP, in a possible implementation manner in the embodiment of the present invention, the noise may be used according to the requirements of the actual application scenario. The generator and the first AP respectively configure one antenna; when the first AP controls the noise generator to transmit noise through the power control unit 14 and the radio frequency control unit 18 of the first AP, a possible implementation manner in the embodiment of the present invention The noise generator can be used according to the requirements of the actual application scenario. Configure the same antenna as the first AP.

It should be noted that the embodiments provided by the present invention may be applied to an application scenario where the throughput requirement is relatively high, such as a high-density deployment or a non-high-density deployment, and the application scenario of the embodiment provided by the present invention is not performed in the embodiment of the present invention. Specific restrictions.

The first STA provided by the embodiment of the present invention, after the first AP control noise generator emits noise in the coverage of the cell where the first AP is located, the first STA increases the threshold value of the transceiver parameter according to the noise, so as to facilitate When the first AP sends downlink data in the same or overlapping transmission time period as the second AP, the first STA demodulates the downlink data sent by the first AP, or when the first AP is in the same or overlapping transmission time as the second AP When the downlink data is sent in the segment, the first STA only demodulates the downlink data sent by the first AP, and does not demodulate the downlink data sent by the second AP, thereby improving the concurrency rate of the intra-frequency APs with smaller spacing, thereby satisfying The application scenario has a demand for throughput, which reduces the deployment cost and labor cost compared with the prior art by improving the isolation of the same-frequency AP and increasing the concurrency rate of the same-frequency APs with smaller spacing, and improves the system's Throughput rate and frequency utilization.

Moreover, after the first AP control noise generator emits noise within the coverage of the cell where the first AP is located, the first STA may increase the threshold of its own CCA threshold, and the first STA may ignore the interference signal. The uplink data is sent to the first AP in the same or overlapping time period as the second STA, thereby improving the concurrency rate between STAs with co-channel interference, and further improving the throughput and spectrum utilization of the system.

Another embodiment of the present invention provides a method for transmitting a noise, which is applied to a WLAN system, where the WL AN system may include: a first AP, a first STA associated with the first AP, and an AC. Since when the first AP is in contact with the second AP (the second AP is When the downlink data is sent in the same or overlapping transmission time period, the first STA cannot demodulate the downlink data sent by the first AP, and the inter-AP with the same-frequency interference exists (the first AP and the AP) The concurrency rate of the second AP is decreased. In order to improve the concurrency rate of the APs with the same frequency interference, the noise emission method shown in FIG. 5 is provided in the embodiment of the present invention, and the method may include:

301. The first AP detects the extent to which the STA of the STA is locked.

The first AP detects the extent to which the receiver of the first STA is locked, so as to obtain the interference severity between the APs with co-channel interference.

302. The first AP sends a lock notification message carrying a lock parameter to the AC, so that the AC determines the scramble power according to the lock parameter.

The lock parameter is used to indicate the extent to which the receiver of the first STA is locked. After the first AP detects that the receiver of the first STA is locked, the first AP may carry the locking parameter for indicating the degree to which the receiver of the first STA is locked, in the lock notification message, and report it to the AC, so that After receiving the lock notification message sent by the first AP, the AC determines the scrambling power according to the lock parameter carried in the lock notification message, and carries the determined scrambling power in the scramble control message to be sent to the first AP. .

303. The first AP receives the scrambling control message sent by the AC and carries the scrambled power.

304. The first AP controls the noise generator to transmit noise in a coverage area of the cell where the first AP is located according to the scrambling power.

After receiving the scrambling control message carrying the scrambled power sent by the AC, the first AP may control the noise generator to transmit noise in the coverage of the cell where the first AP is located according to the scrambling power.

It should be noted that, in the embodiment of the present invention, when the first AP and the second AP are configured with the same frequency, and the distance between the first AP and the second AP is small, the first AP and the second AP may be considered to be the same. Frequency interference.

In the noise transmitting method provided by the embodiment of the present invention, first, the first AP detects the first STA. The degree to which the receiver is locked, and then the lock parameter for indicating the degree to which the receiver of the first STA is locked is reported to the AC, so that the AC determines the scramble power according to the lock parameter, and the scramble control with the scrambled power is carried. The message is sent to the first AP, and the first AP can control the noise generator to emit noise in the coverage area of the cell where the first AP is located according to the scrambling power. The first AP controls the noise generator to transmit noise within the coverage of the cell where the first AP is located, so that the first STA only demodulates when the downlink data is sent in the same or overlapping transmission period as the second AP. The downlink data sent by the first AP is not demodulated, and the downlink data sent by the second AP is not demodulated, thereby increasing the concurrency rate of the intra-frequency APs with smaller spacing, thereby satisfying the requirement of the application scenario on the throughput rate, and the prior art. By increasing the isolation of the same-frequency AP and improving the concurrency rate of the same-frequency AP with smaller spacing, the deployment cost and labor cost are reduced, and the throughput and frequency utilization of the system are improved.

Another embodiment of the present invention provides a method for transmitting a noise, which is applied to a WLAN system. The WL AN system may include: a first AP, a first STA associated with the first AP, and an AC. The first STA cannot demodulate the first AP to send when the first AP sends downlink data in a time period that is the same as or overlaps with the second AP (the second AP is an AP that has co-channel interference with the first AP). The downlink data causes the concurrency rate between the APs with the same frequency interference (the first AP and the second AP) to decrease. To improve the concurrency rate between the APs with the same frequency interference, the first AP can send the received AC. After the control message is received, the noise generator is controlled to transmit noise in the coverage area of the cell where the first AP is located according to the scrambling power carried in the scrambling control message, so that the first STA improves the receiving and receiving parameters of the first STA according to the noise. The threshold value may only demodulate the downlink data sent by the first AP without demodulating the downlink data sent by the second AP. Specifically, as shown in FIG. 6, the method may include:

401. After the first AP control noise generator transmits the noise in the coverage of the cell where the first AP is located, the first STA increases the threshold value of the sending and receiving parameters of the first STA according to the noise, or the first STA demodulates the first Downlink data sent by the AP.

The noise is that after the first AP receives the scrambling control message of the AC, the control noise generator is transmitted in the coverage area of the cell where the first AP is located, and the downlink data is The first AP is sent in the same or overlapping transmission time period as the second AP, and the first AP and the second AP have co-channel interference.

In a first possible implementation manner of the embodiment of the present invention, when the first STA has the capability of automatically adjusting the threshold value of the transceiver parameter according to the detected strength of the interference signal, the first AP controls the noise generator. After transmitting the noise in the coverage of the cell in which the first AP is located, the first STA may increase the threshold of the transmission and reception parameters of the first AP according to the noise in order to have the capability of receiving the downlink data sent by the first AP associated with the first AP. .

Or, in a second possible implementation manner of the embodiment of the present invention, when the first STA does not have the capability of automatically adjusting the threshold value of the transceiver parameter according to the detected strength of the interference signal, the first AP controls. After the noise generator transmits the noise in the coverage of the cell where the first AP is located, when the first AP sends the downlink data in the same or overlapping transmission period as the second AP, the signal of the downlink data sent by the second AP is caused. The strength of the downlink STA is lower than the threshold of the receiving sensitivity of the first STA, and the signal strength of the downlink data sent by the first AP is higher than the threshold of the receiving sensitivity of the first STA, so that the first STA demodulates only the first AP. The downlink data is transmitted without demodulating the downlink data sent by the second AP.

According to the noise transmission method provided by the embodiment of the present invention, after the first AP control noise generator emits noise in the coverage of the cell where the first AP is located, the first STA increases the threshold value of the transceiver parameter according to the noise, so as to facilitate When the first AP sends downlink data in the same or overlapping transmission time period as the second AP, the first STA only demodulates the downlink data sent by the first AP, and does not demodulate the downlink data sent by the second AP, or When an AP sends downlink data in the same or overlapping transmission period as the second AP, The first STA only demodulates the downlink data sent by the first AP, and does not demodulate the downlink data sent by the second AP, thereby improving the concurrency rate of the intra-frequency APs with smaller spacing, thereby satisfying the application scenario to the throughput rate. Demand, compared with the prior art, by improving the isolation of the same-frequency AP and increasing the concurrency rate of the same-frequency AP with smaller spacing, the deployment cost and labor cost are reduced, and the throughput and spectrum utilization of the system are improved.

Another embodiment of the present invention provides a method for transmitting a noise, which is applied to a WLAN system, where the WLAN system includes: an AP, a STA, an AC, and a second AP associated with the first AP, where the second AP and The first AP has co-channel interference. The first STA cannot demodulate the first AP transmission when the first AP sends the downlink data in the same time period as the second AP (the second AP is the AP with the same frequency interference as the first AP). The downlink data, the concurrency rate of the APs with the same-frequency interference (the first AP and the second AP) is decreased. To improve the concurrency rate between the APs with the same-frequency interference, in an application scenario, the first STA is used. The present invention provides a noise emission method as shown in FIG. 7 when the capability of the threshold value of the transmission and reception parameters is automatically adjusted according to the strength of the detected interference signal. The method may include:

501. The first AP detects the extent to which the STA of the STA is locked.

In a first possible implementation manner, the first AP detects that the receiver of the first STA is locked, and the first AP may send the probe packet to the first STA, and collect the first STA at the preset time. The packet return rate for the probe in the segment.

The packet return rate may reflect the extent to which the receiver of the first STA is locked. For example, the first AP may send 100 probe packets to the first STA. After receiving the probe packet sent by the first AP, the first STA may send an Acknowledgement (ACK) to the first AP. The AP may be configured to count the number of ACKs that are sent by the first STA, and determine the return rate of the first STA for the probe according to the number of ACKs that are sent by the first STA. If the number of ACKs fed back by the first STA that is calculated by the first AP in the preset time period is 70, the first AP can determine the packet return rate of the first STA for the probe message. 70%.

In a second possible implementation manner, the first AP detects that the receiver of the first STA is locked, and the first AP may send the probe packet to the first STA, and collect the first STA at the preset time. The packet return rate of the probe packet in the segment, and the degree of the degree to which the receiver of the first STA corresponding to the packet return rate is locked is obtained.

The degree of the degree to which the receiver of the first STA corresponding to the packet return rate is locked may reflect the extent to which the receiver of the first STA is locked. In a possible implementation manner of the embodiment of the present invention, a mapping relationship between a return packet rate and a degree of the degree to which the receiver of the first STA is locked may be pre-stored in the first AP, such that when the first AP After obtaining the packet return rate of the probe packet in the preset time period, the first STA can obtain the receiver of the first STA corresponding to the statistically returned packet rate according to the statistics of the packet return rate. The degree of the degree of being locked. For example, in the mapping relationship table, when the packet return rate is lower than 50%, the degree of the degree to which the receiver of the corresponding first STA is locked is severe; when the packet return rate is higher than 50% and lower than 80 %, the degree of the degree to which the receiver of the corresponding first STA is locked is generally severe; when the packet return rate is higher than 80%, the degree of the degree to which the receiver of the corresponding first STA is locked is not serious Then, when the first AP counts that the first STA has a packet return rate of 70% in the preset time period, the first AP can search the mapping relationship table according to the statistics of the returned packet rate, and obtain the return packet. The degree to which the receiver of the first STA corresponding to the rate is locked is generally severe.

It should be noted that the probe packet used by the first AP to detect the extent to which the receiver of the first STA is locked may be a low-order modulated short packet probe packet, or may be a high-order modulated short packet probe packet. . In the case of poor channel quality, low-order modulated short packet detection packets are preferentially selected. The embodiment of the present invention does not limit the type of the probe packet used by the first AP to obtain the degree of the receiver of the first STA being locked, and may select different types of probes according to the requirements of the actual application scenario. There are no restrictions here.

In the embodiment of the present invention, the extent to which the receiver of the first STA is locked may be detected by the first AP, or may be received by the first AP, when the first AP receives the When the degree to which the receiver of the first STA is locked is obtained, the extent to which the receiver of the first STA is locked is acquired by the first STA and transmitted to the first AP.

502. The first AP sends a lock notification message carrying a lock parameter to the AC, so that the AC determines the scramble power according to the lock parameter.

In a first possible implementation manner, when the locking parameter is a packet return rate of the probe message sent by the first STA to the first AP, the first AP may send a lock notification message carrying the packet return rate. The AC is reported to the AC, so that the AC receives the lock notification message sent by the first AP, and determines the corresponding scramble power according to the packet return rate carried in the lock notification message. In a possible implementation manner of the embodiment of the present invention, a mapping relationship between a packet return rate and an AC determined scrambling power may be pre-stored in the AC. In this way, after receiving the lock notification message sent by the first AP, the AC may search the mapping relationship table to determine the scrambling power corresponding to the packet return rate according to the packet return rate carried in the received lock notification message.

In a second possible implementation manner, when the locking parameter is a value of a degree to which the receiver of the first STA that is acquired by the first AP according to the packet return rate is locked, the first AP may receive the first STA. The lock notification message of the degree of the degree to which the machine is locked is reported to the AC, so that the AC receives the lock notification message sent by the first AP, according to the extent to which the receiver of the first STA carried in the lock notification message is locked. The value determines the corresponding scrambling power. In a possible implementation manner of the embodiment of the present invention, a mapping relationship between a degree of the degree to which the receiver of the first STA is locked and an AC determined scrambling power may be pre-stored in the AC. In this way, after the AC receives the lock notification message sent by the AP, the AC may search for the mapping according to the degree of the degree that the receiver of the first STA carried in the received lock notification message is locked. The table determines the scrambling power corresponding to the packet return rate.

503. The first AP receives the scrambling control message sent by the AC and carries the scrambled power.

504. The first AP controls the noise generator to transmit noise in a coverage area of the cell where the first AP is located according to the scrambling power.

In the embodiment of the present invention, preferably, in order to prevent the noise emitted by the noise generator from interfering with the downlink data sent by the first AP, and according to the 802.1 1 protocol, the short interframe space (English: Short Interframe Space; The first AP does not transmit downlink data in the interval. Therefore, the first AP can control the noise generator to transmit noise within the SIFS interval within the coverage of the cell in which the first AP is located according to the scrambling power.

It should be noted that, in the embodiment of the present invention, the noise that is transmitted by the first AP control noise generator in the coverage of the cell in which the first AP is located may be white noise, and the embodiment of the present invention is not specifically limited herein.

505. The first STA increases a threshold value of the transceiver parameter of the first STA according to the noise. The first STA needs to automatically adjust the threshold of the transmission and reception parameters according to the strength of the detected interference signal, so the first STA needs to count the interference signals received in the SIFS interval in several statistical periods. The signal strength is adjusted to the threshold of the received and received parameters to the signal strength of the received interference signal. In the embodiment of the present invention, since the first AP is based on the scrambled power, the noise generator is controlled. The noise is transmitted in the coverage of the cell in which the AP is located. Therefore, the interference signal received in the SIFS interval counted by the first STA includes the noise transmitted by the first AP control noise generator.

It should be noted that, in the embodiment of the present invention, the receiving and receiving parameters of the first STA may include the receiving sensitivity of the first STA, the CSA threshold of the first STA, and the receiving sensitivity of the first STA and the first STA. CCA threshold.

In order to further improve the concurrency rate between intra-frequency APs with smaller spacing, the first AP Obtaining the signal strength of the channel, and reporting the signal strength of the obtained channel to the AC, so that the AC determines the first threshold value of the transceiver parameter of the first AP according to the signal strength of the reported channel, and determines the determined The first threshold of the sending and receiving parameters of the first AP is sent to the first AP. After receiving the first threshold of the sending and receiving parameters sent by the AC, the first AP receives the first AP's sending and receiving parameters from the second threshold. The value is adjusted to the first threshold. Specifically, the following steps may be included: Step 506 - Step 509:

506. The first AP acquires a signal strength of the channel.

The signal strength of the channel includes the interference signal strength and the useful signal strength. For example, the first AP may acquire the signal strength of the wanted signal sent by the first STA, and may also acquire the signal strength of the interference signal sent by the other WLAN device, where the WLAN device may be the second channel with the same frequency interference as the first AP. The AP may be the second STA that has the same frequency interference as the first AP. When the second STA has the same frequency as the first AP, and the second STA is within the coverage of the cell where the first AP is located, the AP may be considered as the first STA. The second STA has the same frequency interference as the first AP.

507. The first AP sends a signal strength of the channel to the AC, so that the AC determines a first threshold value of the transceiver parameter of the first AP according to the signal strength of the channel.

After the first AP acquires the signal strength of the channel, the first AP may send the signal strength of the acquired channel to the AC, so that the AC determines the first according to the interference signal strength and the useful signal strength included in the signal strength of the channel. The first threshold value of the sending and receiving parameters of the AP, and sending the determined first threshold of the sending and receiving parameters of the first AP to the first AP, where the first threshold of the sending and receiving parameters is greater than the strength of the interference signal, and Less than the strength of the useful signal.

508. The first AP receives a first threshold value sent by the AC.

509. The first AP adjusts, by using a second threshold, a transceiving parameter of the first AP to a first threshold.

After the first AP receives the first threshold of the sending and receiving parameters of the AC, the first AP may adjust the sending and receiving parameters of the first AP to the first threshold by using the second threshold, the second threshold. The limit is the current threshold of the transmit and receive parameters of the first AP.

It should be noted that, in the embodiment of the present invention, the sending and receiving parameters of the first AP may be The receiving sensitivity of the first AP may also include a CCA threshold of the first AP, and may also include a receiving sensitivity of the first AP and a CCA threshold of the first AP.

It should be noted that there is no sequence between step 501 - step 505 and step 506 - step 509, and step 501 - step 505 may be performed first, then step 506 - step 509 may be performed, or step 506 - step 509 may be performed first, and then executed. Step 501 - Step 505, the embodiment of the present invention does not limit the execution order of step 501 - step 505 and step 506 - step 509.

When the sending and receiving parameters of the first AP include the CCA threshold of the first AP, the first AP adjusts the sending and receiving parameters of the first AP to the first threshold by using the second threshold, which may be: The second threshold of the CCA threshold of the AP is adjusted to the first threshold. In the embodiment of the present invention, after the first AP adjusts the second threshold of the CCA threshold of the first AP to the first threshold, When the first AP needs to send downlink data to the first STA, the method may further include the following steps: 5-10 Step 5 1 1 :

5 10. The first AP reacquires the signal strength of the channel.

When the signal strength of the channel is smaller than the first threshold of the CCA threshold of the first AP, the first AP sends the downlink to the first STA through the channel in the same or overlapping transmission period as the second AP. data.

When the first AP needs to send downlink data to the first STA, it needs to determine whether the channel is idle. Specifically, the first AP may reacquire the signal strength of the channel, and after regaining the signal strength of the channel, determine whether the channel is idle by determining whether the signal strength of the channel is less than a first threshold of the CCA threshold of the channel. . If the signal strength of the channel is less than the first threshold of its own CCA threshold, the first AP determines that the channel is idle, and since the first AP transmits noise after the control noise generator covers the cell coverage of the first AP, The first STA increases the threshold of the sending and receiving parameters of the first STA according to the noise, so in order to improve the throughput of the system, the first AP may pass the channel in the same or overlapping transmission period as the second AP. A STA sends downlink data. If the signal strength of the channel is greater than or equal to the first threshold of the CCA threshold of the own, the first AP determines that the channel is busy, and the first AP needs to wait for a period of time to re-determine whether the channel is idle, and if the channel is idle, Letter The channel sends downlink data to the first STA.

When the first STA increases the receiving and receiving parameters of the first STA according to the noise, the first STA increases the threshold of the sending and receiving parameters of the first STA according to the noise, which may be: And increasing the threshold value of the receiving sensitivity of the first STA according to the noise, after the first AP sends the downlink data to the first STA by using the channel in the same or overlapping transmission period as the second AP, the method may further include the following Step 5 12 :

The first STA demodulates the downlink data sent by the first AP according to the threshold value of the received sensitivity of the first STA.

When the first AP sends the downlink data in the same or overlapping transmission period as the second AP, the first STA sends the downlink of the first STA according to the noise, so that the second AP sends the downlink. The signal strength of the data is lower than the threshold of the received sensitivity of the first STA, and the signal strength of the downlink data sent by the first AP is higher than the threshold of the received sensitivity of the first STA. Therefore, ― The STA only demodulates the downlink data sent by the first AP without demodulating the downlink data sent by the second AP.

In summary, the first AP control noise generator emits noise in the coverage area of the cell where the first AP is located, and the first AP dynamically increases the threshold of its own CCA threshold under the control of the AC. When the AP detects that the signal strength of the channel is smaller than the first threshold of the CCA threshold of the first AP, the first AP may send the downlink to the first STA by using the channel in the same or overlapping transmission period as the second AP. data. And, the first STA only solves the threshold of the receiving sensitivity of the first STA according to the noise. When the first AP sends the downlink data to the first STA in the same or overlapping transmission period as the second AP, the first STA only solves the problem. Adjusting the downlink data sent by the first AP without demodulating the downlink data sent by the second AP improves the concurrency rate of the APs with co-channel interference, thereby improving the throughput and spectrum utilization of the system.

In order to further improve the throughput and frequency utilization of the system, the WLAN system may further include: a second STA, where the second STA has co-channel interference with the first STA. When the transmit and receive parameters of the first STA include the CCA threshold of the first STA, the first STA root The threshold of the first STA is increased according to the noise, and the first STA may improve the CCA threshold of the first STA according to the noise. In the embodiment of the present invention, the first STA improves the CCA of the first STA according to the noise. After the threshold, when the first STA needs to send uplink data to the first AP, the method may further include the step 5 13 - step 5 15 :

5 13. The first STA acquires the signal strength of the channel.

When the signal strength of the channel is less than the threshold of the CCA threshold of the first STA, the first STA sends the uplink to the first AP through the channel during the same or overlapping transmission period as the second STA. data.

When the first STA needs to send uplink data to the first AP, it needs to determine whether the channel is idle. Specifically, the first STA may obtain the signal strength of the channel, and after obtaining the signal strength of the channel, determine whether the channel is idle by determining whether the signal strength of the channel is smaller than a threshold of the CCA threshold that is raised by itself. If the signal strength of the channel is less than the threshold of the CCA threshold after the self-improvement, the first STA determines that the channel is idle, and the first STA may pass the channel in the same or overlapping transmission period as the second STA. An AP sends uplink data. If the signal strength of the channel is greater than or equal to the threshold of the CCA threshold after the self-improvement, the first STA determines that the channel is busy, and the first STA needs to wait for a period of time to re-determine whether the channel is idle, and if the channel is idle, The channel transmits uplink data to the first AP.

In step 509, the first AP adjusts the transmit and receive parameters of the first AP to the first threshold, and the first AP may adjust the receive sensitivity of the first AP from the second threshold to In the first threshold, after the first STA sends the uplink data to the first AP through the channel in the same or overlapping transmission period as the second STA, the method may further include the following step 5 15 :

The first AP demodulates the uplink data sent by the first STA according to the first threshold of the receiving sensitivity of the first AP.

When the first STA sends the uplink data in the same or overlapping transmission period as the second STA, the first AP increases the threshold of the receiving sensitivity of the first AP under the control of the AC, so that the second STA sends the uplink STA. The signal strength of the uplink data is lower than the first threshold of the receiving sensitivity of the first AP, and the uplink data sent by the first STA The signal strength is higher than the first threshold of the receiving sensitivity of the first AP. Therefore, the first AP only demodulates the uplink data sent by the first STA, and does not demodulate the uplink data sent by the second STA.

In summary, after the first AP control noise generator transmits noise in the coverage of the cell where the first AP is located, the first STA increases the threshold of its own CCA threshold according to the noise, and when the first STA detects the signal strength of the channel When the threshold of the CCA threshold of the first STA is increased, the first STA may send uplink data to the first AP through the channel in the same or overlapping transmission period as the second STA. The first AP increases the threshold of its own receiving sensitivity under the control of the AC. When the first STA sends uplink data to the first AP in the same or overlapping transmission period as the second STA, the first AP The AP only demodulates the uplink data sent by the first STA, and does not demodulate the uplink data sent by the second STA, which improves the concurrency rate between STAs with co-channel interference, and further improves the throughput and spectrum utilization of the system.

According to the noise transmission method provided by the embodiment of the present invention, the first AP control noise generator emits noise in the coverage of the cell where the first AP is located, so that the first STA can increase the threshold of the receiving sensitivity of the first STA according to the noise, and simultaneously The AP adjusts the threshold of the CCA threshold to the first threshold by the second threshold. The AP detects that the signal strength of the channel is smaller than the CCA threshold of the first AP. When the first threshold is used, the first AP may send downlink data to the first STA through the channel during the same or overlapping transmission period as the second AP. The first STA can increase the threshold of the receiving sensitivity of the first STA according to the noise, so that the signal strength of the downlink data sent by the second AP is lower than the threshold of the receiving sensitivity of the first STA, and the downlink of the first AP is sent. The signal strength of the data is higher than the threshold of the received sensitivity of the first STA. Therefore, the first STA only demodulates the downlink data sent by the first AP, and does not demodulate the downlink data sent by the second AP, thereby improving the downlink data. The concurrency rate of the same-frequency APs with smaller spacings, which meets the throughput requirements of the application scenario. Compared with the prior art, the isolation ratio of the same-frequency APs is improved, and the concurrency rate of the same-frequency APs with smaller spacings is improved. , reducing deployment costs and labor costs, and improving system throughput and frequency utilization. Moreover, after the first AP control noise generator emits noise within the coverage of the cell where the first AP is located, the first STA may increase the threshold of its own CCA threshold, and the first STA may ignore the interference signal. Sending uplink data to the first AP in the same or overlapping time period as the second STA, and the first AP adjusts its own receiving sensitivity from the second threshold value to the first threshold value under the control of the AC. The first AP only demodulates the uplink data sent by the first STA, but does not demodulate the uplink data sent by the second STA, when the first STA sends the uplink data in the same or overlapping transmission time period as the second STA. The concurrency rate between STAs with co-channel interference is improved, and the throughput and spectrum utilization of the system are further improved.

When the first STA does not have the ability to automatically adjust the threshold of the transmission and reception parameters of the transmission signal according to the strength of the detected interference signal, the embodiment of the present invention provides a noise emission method as shown in FIG. 8. The method may include:

601. The first AP detects the extent to which the STA of the STA is locked.

602. The first AP sends a lock notification message carrying a lock parameter to the AC, so that the AC determines the scramble power according to the lock parameter.

603. The first AP receives the scrambling control message sent by the AC and carries the scrambled power.

604. The first AP controls the noise generator to transmit noise in a coverage area of the cell where the first AP is located according to the scrambling power.

It should be noted that, in the embodiment of the present invention, in order to facilitate the signal processing of the receiver of the first STA, since the power spectral density of the white noise is uniformly distributed, in the embodiment of the present invention, the first AP controls the noise. The noise emitted by the generator within the coverage of the cell in which the first AP is located is preferably white noise. In the embodiment of the present invention, the noise type of the first AP control noise generator that is transmitted in the coverage of the cell where the first AP is located is not limited, and the corresponding noise type may be selected according to the requirements of the actual application scenario.

605. The first AP acquires a signal strength of the channel.

606. The first AP sends the signal strength of the channel to the AC, so that the AC determines a first threshold value of the transceiver parameter of the first AP according to the signal strength of the channel.

607. The first AP receives a first threshold value sent by the AC.

608. The first AP adjusts the sending and receiving parameters of the first AP from the second threshold to the first Threshold.

It should be noted that there is no sequence between step 601 - step 604 and step 605 - step 608. Step 601 - step 604 may be performed first, then step 605 - step 608 may be performed, or step 605 - step 608 may be performed first, and then executed. Step 601 - Step 604. The embodiment of the present invention does not limit the order of execution of steps 601 - 604 and 605 - 608 here.

It should be noted that, in the embodiment of the present invention, the receiving and receiving parameters of the first AP may include the receiving sensitivity of the first AP, and may also include the CCA threshold of the first AP, and may further include the receiving sensitivity of the first AP and the first AP. CCA threshold.

When the sending and receiving parameters of the first AP include the CCA threshold of the first AP, the first AP adjusts the sending and receiving parameters of the first AP to the first threshold by using the second threshold, which may be: After the second threshold of the CCA threshold of the AP is adjusted to the first threshold, in the embodiment of the present invention, the second threshold of the CCA threshold of the first AP is adjusted to the first threshold in the first AP. Then, when the first AP needs to send downlink data to the first STA, the method may further include the following step 609-step 61 1 :

609. Regain the signal strength of the channel.

610. When the signal strength of the channel is smaller than the first threshold of the CCA threshold of the first AP, send downlink data to the first STA through the channel during the same or overlapping transmission period as the second AP.

61 1. The first STA demodulates downlink data sent by the first AP.

When the first AP sends downlink data in the same or overlapping transmission period as the second AP, the first AP controls the noise generator to transmit noise in the coverage of the cell where the first AP is located, so that the second AP sends the data. The signal strength of the downlink data is lower than the threshold of the receiving sensitivity of the first STA, and the signal strength of the downlink data sent by the first AP is higher than the threshold of the receiving sensitivity of the first STA, therefore, the first STA only solves The downlink data sent by the first AP is adjusted, and the downlink data sent by the second AP is not demodulated.

In order to further improve the throughput and frequency utilization of the system, the WLAN system may further include: a second STA, where the second STA has co-channel interference with the first STA. After the first AP control noise generator transmits the noise in the coverage of the cell where the first AP is located, when the first STA needs to send the uplink data to the first AP, the method may further include steps 612 to 614:

612. The first STA acquires a signal strength of the channel.

613. When the signal strength of the channel is smaller than the threshold of the CCA threshold of the first STA, the first STA sends the uplink data to the first AP by using the channel in the same or overlapping transmission period as the second STA.

614. The first AP demodulates the uplink data sent by the first STA according to the first threshold of the receiving sensitivity of the first AP.

It should be noted that, in the description of the steps 601 to 614 in the embodiment of the present invention, reference may be made to the specific description of the corresponding content in step 501 - step 515 in the embodiment of the present invention, and the embodiment of the present invention is no longer- Narration.

It should be noted that when the first AP continuously transmits noise in the coverage of the cell where the first AP is located according to the scrambling power, a possible implementation manner in the embodiment of the present invention may be based on actual conditions. The application scenario requires that the noise generator and the first AP respectively configure one antenna; when the first AP controls the noise generator to transmit noise within the SIFS interval within the coverage of the cell where the first AP is located according to the scrambling power, the present invention In a possible implementation manner of the embodiment, the same antenna may be configured for the noise generator and the first AP according to the requirements of the actual application scenario.

In the embodiment of the present invention, preferably, the noise transmitter may be integrated with the first AP. Of course, the noise generator can also be independent of the first AP, when the noise is generated The noise transmitting method may be specifically: after the first AP detects that the receiver of the STA is locked, the first AP may be used to indicate the receiving of the first STA. The lock parameter of the degree to which the machine is locked is carried in the lock notification message and sent to the AC. At this time, the AC can receive the lock notification message carrying the lock parameter sent by the first AP, and then the AC can determine the scramble power according to the lock parameter, and directly The noise generator is controlled to emit noise within the coverage of the cell in which the first AP is located according to the determined scrambling power. After the AC control noise generator transmits the noise in the coverage of the cell where the first AP is located, the first STA may increase the threshold of the sending and receiving parameters of the first STA according to the noise, and the sending and receiving parameters of the first STA may include the first STA. The receiving sensitivity may also include a CCA threshold of the first STA, and may also include a receiving sensitivity of the first STA and a CCA threshold of the first STA.

Further, in order to further improve the concurrency rate of the inter-frequency APs with smaller spacing, the AC may also receive the signal strength of the acquired channel sent by the first AP, so as to determine the first AP according to the signal strength of the channel. Transmitting a first threshold of the parameter, and sending the determined first threshold of the first AP's transceiving parameter to the first AP, so that the first AP adjusts its own transceiving parameter from the second threshold to the first A threshold value, the receiving and receiving parameters of the first AP may include a receiving sensitivity of the first AP, and may also include a CCA threshold of the first AP, and may further include a receiving sensitivity of the first AP and a CCA threshold of the first AP.

When the receiving and receiving parameters of the first AP include the CCA threshold of the first AP, and the receiving and receiving parameters of the first STA include the receiving sensitivity of the first STA, the first AP sets the threshold of the CCA threshold of the first AP under the control of the AC. After the second threshold is adjusted to the first threshold, if the first AP sends downlink data in the same or overlapping transmission period as the second AP, the first STA improves the receiving sensitivity of the first STA according to the noise. The threshold value of the downlink data sent by the second AP is lower than the threshold of the received sensitivity of the first STA, and the signal strength of the downlink data sent by the first AP is higher than the first one after the improvement. The threshold of the receiving sensitivity of the STA. Therefore, the first STA only demodulates the downlink data sent by the first AP, and does not demodulate the downlink data sent by the second AP. When the transmit and receive parameters of the first AP include the receive sensitivity of the first AP, and the transmit and receive parameters of the first STA include the CCA of the first STA, after the AC control noise generator emits noise within the coverage of the cell where the first AP is located, The first STA may increase the threshold of its own CCA threshold. If the first STA sends uplink data in the same or overlapping transmission period as the second STA, the first AP receives its own reception under the control of the AC. The threshold of the sensitivity is adjusted by the second threshold to the first threshold, so that the signal strength of the uplink data sent by the second STA is lower than the first threshold of the receiving sensitivity of the first AP, and sent by the first STA. The signal strength of the uplink data is higher than the first threshold of the receiving sensitivity of the first AP. Therefore, the first AP only demodulates the uplink data sent by the first STA, and does not demodulate the uplink data sent by the second STA.

Further, in order to prevent the noise emitted by the noise generator from interfering with the downlink data sent by the first AP, the AC may control the noise generator to transmit noise within the SIFS interval within the coverage of the cell where the first AP is located.

According to the noise transmitting method provided by the embodiment of the present invention, the first AP control noise generator emits noise in the coverage of the cell where the first AP is located, and the first AP controls the threshold of the CCA threshold by the AC under the control of the AC. The second threshold is adjusted to the first threshold. When the first AP detects that the signal strength of the channel is smaller than the first threshold of the CCA threshold of the first AP, the first AP may be in the second AP. During the same or overlapping transmission time period, downlink data is transmitted to the first STA through the channel. The first AP control noise generator transmits noise in the coverage of the cell where the first AP is located, so that the signal strength of the downlink data sent by the second AP is lower than the threshold of the receiving sensitivity of the first STA, and the first AP sends The signal strength of the downlink data is higher than the threshold of the receiving sensitivity of the first STA. Therefore, the first STA only demodulates the downlink data sent by the first AP, and does not demodulate the downlink data sent by the second AP, thereby improving the downlink data. The concurrency rate of the same-frequency APs with smaller spacings, which meets the throughput requirements of the application scenario. Compared with the prior art, the isolation ratio of the same-frequency APs is improved, and the concurrency rate of the same-frequency APs with smaller spacings is improved. , reducing deployment costs and labor costs, and improving system throughput and frequency utilization.

And, since the first AP is under the control of the AC, its own receiving sensitivity is The second threshold is adjusted to the first threshold, so that when the first STA sends the uplink data in the same or overlapping time period as the second STA, the first AP only demodulates the uplink data sent by the first STA, instead of The uplink data sent by the second STA is demodulated, thereby improving the concurrency rate between STAs with co-channel interference, and further improving the throughput and spectrum utilization of the system.

Another embodiment of the present invention provides a first AP, which is included in a WLAN system, and the WLAN system may further include: a first STA associated with the first AP, and an AC. As shown in FIG. 9, the first AP may include: a processor 71, a transmitter 72, and a receiver 73.

The processor 71 is configured to detect a degree to which the receiver of the first STA is locked.

a transmitter 72, configured to send a lock notification message carrying a lock parameter to the AC, so that the AC determines the scramble power according to the lock parameter; wherein the lock parameter is used to indicate the first

The extent to which the STA's receiver is locked.

The receiver 73 is configured to receive a scrambling control message that is sent by the AC and carries the scrambled power. The processor 71 is further configured to control the noise generator to emit noise in a coverage area of the cell where the first AP is located according to the scramble power received by the receiver 73.

Further, the processor 71 is further configured to acquire a signal strength of the channel, where the signal strength of the channel includes the interference signal strength and the useful signal strength.

The transmitter 72 is further configured to send the signal strength of the channel acquired by the processor 71 to the AC, so that the AC determines a first threshold value of the transceiver parameter of the first AP according to the signal strength of the channel; A threshold is greater than the strength of the interfering signal and less than the strength of the useful signal.

The receiver 73 is further configured to receive a first threshold value sent by the AC.

The processor 71 is further configured to adjust the transmit and receive parameters of the first AP to a first threshold by using a second threshold. The second threshold is a current threshold of the transmit and receive parameters of the first AP.

Further, the transmit and receive parameters of the first AP include a channel idle assessment CCA threshold of the first AP, and the WLAN system may further include: a second AP, where the second AP and the first AP have co-channel interference. The processor 71 is further configured to reacquire the signal strength of the channel after adjusting the transceiving parameter of the first AP from the second threshold to the first threshold.

The transmitter 72 is further configured to: when the signal strength of the channel acquired by the processor 71 is less than the first threshold of the CCA threshold of the first AP, in the same or overlapping transmission period as the second AP, The first STA sends downlink data.

Further, optionally, the sending and receiving parameters of the first AP include the receiving sensitivity of the first AP, and the WLAN system may further include: a second STA, where the second STA has the same frequency interference as the first STA.

The processor 71 is further configured to: after adjusting the transceiver parameter of the first AP by using the second threshold to the first threshold, demodulating the first STA according to the first threshold of the receiving sensitivity of the first AP Uplink data; wherein, the uplink data is sent by the first STA in the same or overlapping transmission period as the second STA.

Further, the processor 71 is configured to send a probe packet to the first STA, and collect a packet return rate of the probe for the preset STA within a preset time period.

The transmitter 72 is specifically configured to carry the packet return rate obtained by the processor 71 in the lock notification message and send it to the AC.

Further, the processor 71 is configured to send a probe packet to the first STA, and collect a packet return rate of the probe packet in the preset time period, and obtain a packet corresponding to the packet return rate. The degree to which the receiver of a STA is locked.

The transmitter 72 is specifically configured to carry the value of the extent to which the receiver of the first S T A corresponding to the packet return rate obtained by the processor 71 is locked in the lock notification message to the AC.

Further optionally, the processor 71 is further configured to control the noise generator to emit noise within the SIFS interval and within the coverage of the cell where the first AP is located.

It should be noted that when the first AP controls the noise generator to continuously transmit noise through the processor 71 of the first AP, in a possible implementation manner in the embodiment of the present invention, the noise may occur according to the requirements of the actual application scenario. And the first AP respectively configure one antenna; when the first AP controls the noise generator to transmit noise in the SIFS interval by the processor 71 of the first AP, a possible implementation manner in the embodiment of the present invention The same antenna can be configured for the noise generator and the first AP according to the requirements of the actual application scenario.

The first AP provided by the embodiment of the present invention first detects the degree to which the receiver of the first STA associated with the first AP is locked, and then reports the locking parameter for indicating the degree to which the receiver of the first STA is locked. AC, so that the AC determines the scrambling power according to the locking parameter, and sends the scrambling control message carrying the scrambled power to the first AP, and the first AP can control the noise generator according to the scrambling power. The noise is transmitted within the coverage of the cell where the AP is located. The first STA only demodulates the first AP transmission by controlling the noise generator to transmit noise within the coverage of the cell in which the first AP is located, so that the first AP and the second AP transmit downlink data in the same or overlapping time period. The downlink data is not demodulated, and the downlink data sent by the second AP is not demodulated, thereby increasing the concurrency rate of the inter-frequency APs with smaller spacing, thereby satisfying the requirement of the throughput of the application scenario, and improving the same frequency by the prior art. The isolation of the AP improves the deployment cost and labor cost compared with the concurrency rate of the same-frequency AP with smaller spacing, and improves the throughput and frequency utilization of the system.

Moreover, the first AP adjusts its own receiving sensitivity from the second threshold to the first threshold under the control of the AC, so that the first STA sends the uplink in the same or overlapping transmission period as the second STA. In the case of data, the first AP only demodulates the uplink data sent by the first STA, and does not demodulate the uplink data sent by the second STA, thereby improving the concurrency rate between STAs with co-channel interference, further improving the system. Throughput rate and frequency utilization. Another embodiment of the present invention provides a first STA, which is included in a WLAN system, where the WLAN system further includes: a first AP and an AC associated with the first STA. As shown in FIG. 10, the first STA may include: a processor 81.

The processor 81 is configured to: after the first AP control noise generator emits noise in a cell coverage area where the first AP is located, increase a threshold value of the transceiver parameter of the first STA according to the noise.

Alternatively, the processor 81 is configured to: after the first AP control noise generator transmits noise in a cell coverage area where the first AP is located, demodulate the downlink data sent by the first AP; the downlink data is the first AP in the second If the AP sends the same or overlapping transmission time period, the first AP and the second AP have the same frequency interference.

Further optionally, the sending and receiving parameters of the first STA include the receiving sensitivity of the first STA.

When the processor 81 is configured to increase the threshold value of the transceiving parameter of the first STA according to the noise, the processor 81 is further configured to: after increasing the threshold value of the transceiving parameter of the first STA according to the noise, according to the obtained improved The threshold of the receiving sensitivity of the first STA is used to demodulate the downlink data sent by the first AP. The downlink data is sent by the first AP in the same or overlapping transmission period as the second AP.

Further, optionally, the sending and receiving parameters of the first STA include a CCA threshold of the first STA, and the WLAN system may further include: a second STA, where the second STA and the first STA have co-channel interference.

When the processor 81 is configured to increase the threshold of the transceiving parameter of the first STA according to the noise, the first STA may further include: the transmitter 82.

The processor 81 is further configured to acquire a signal strength of the channel after increasing a threshold value of the transceiving parameter of the first STA according to the noise.

The transmitter 82 is configured to: when the signal strength of the channel is less than a threshold value of the CSA threshold of the first STA, the uplink data is sent to the first AP by using a channel in a sending time period that is the same as or overlapping with the second STA. . It should be noted that, in the embodiment of the present invention, when the first AP and the second AP are configured with the same frequency, and the distance between the first AP and the second AP is small, the first AP and the second AP may be considered to be the same. Frequency interference. When the first STA and the second STA have the same frequency, and the first STA and the second STA are relatively small, the first STA and the second STA may be considered to have co-channel interference.

The first STA provided by the embodiment of the present invention, after the first AP control noise generator emits noise in the coverage of the cell where the first AP is located, the first STA increases the threshold value of the transceiver parameter according to the noise, so as to facilitate When the first AP sends the downlink data in the same or overlapping time period as the second AP, the first STA only demodulates the downlink data sent by the first AP, and does not demodulate the downlink data sent by the second AP, or When the downlink data is sent by the AP in the same or overlapping period as the second AP, the first STA only demodulates the downlink data sent by the first AP, and does not demodulate the downlink data sent by the second AP, thereby improving the spacing. The concurrency rate of the same-frequency APs further satisfies the throughput requirements of the application scenario. Compared with the prior art, the isolation rate of the same-frequency AP is improved, and the concurrency rate of the same-frequency APs with smaller spacing is reduced. Deployment costs and labor costs, and increased system throughput and spectrum utilization.

Another embodiment of the present invention provides an AC, which is included in a WLAN system, and the WLAN system may further include: a first AP, and a STA that is associated with the first AP. As shown in FIG. 11, the AC may include: a receiving unit 91, a determining unit 92, and a transmitting unit 93 or a power control unit 94. The receiving unit 91 is configured to receive a lock notification message that carries the lock parameter sent by the first AP, where the lock parameter is used to indicate the extent to which the receiver of the first STA is locked.

The determining unit 92 is configured to determine the scrambling power according to the locking parameter received by the receiving unit 91.

The sending unit 93 is configured to carry the scrambling power obtained by the determining unit 92 in the scrambling control message to the first AP, so that the first AP controls the noise generator to cover the cell where the first AP is located according to the scrambling power. The power control unit 94 is configured to control the noise generator to emit noise within the coverage of the cell where the first AP is located according to the scrambling power obtained by the determining unit 92.

The AC provided by the embodiment of the present invention receives a locking parameter sent by the first AP to indicate that the receiver of the first STA is locked, and determines a scrambling power according to the received locking parameter, where the AC may carry The scrambling control message of the scrambling power is sent to the first AP, so that the first AP controls the noise generator to transmit noise in the coverage of the cell where the first AP is located according to the scrambling power, or the AC directly controls the noise according to the determined scrambling power. The generator emits noise within the coverage of the cell in which the first AP is located. The first STA or the AC control noise generator transmits noise in the coverage of the cell where the first AP is located, so that the first STA only sends the downlink data in the same or overlapping transmission time period as the second AP. Demodulating the downlink data sent by the first AP without demodulating the downlink data sent by the second AP, thereby increasing the concurrency rate of the intra-frequency APs with smaller spacing, thereby satisfying the demand for the throughput of the application scenario, and The technology reduces the deployment cost and labor cost by improving the isolation of the same-frequency AP and the concurrency rate of the same-frequency AP with smaller spacing, and improves the throughput and spectrum utilization of the system.

Another embodiment of the present invention provides an AC, which is included in a WLAN system, and the WLAN system may further include: a first AP, and a STA that is associated with the first AP. As shown in FIG. 12, the AC may include: a receiver 1001, a processor 1002, or a transmitter 1003.

The receiver 1001 is configured to receive a lock notification message that carries a lock parameter sent by the first AP, where the lock parameter is used to indicate a degree to which the receiver of the first STA is locked. The processor 1002 is configured to determine a scramble power according to a lock parameter received by the receiver 1001.

The transmitter 1003 is configured to carry the scrambled power obtained by the processor 1002 in the scrambling control message to the first AP, so that the first AP controls the noise generator to cover the cell where the first AP is located according to the scrambling power. The processor 1002 is further configured to control the noise generator to emit noise in a coverage area of the cell where the first AP is located according to the scrambling power.

The AC provided by the embodiment of the present invention receives a locking parameter sent by the first AP to indicate that the receiver of the first STA is locked, and determines a scrambling power according to the received locking parameter, where the AC may carry The scrambling control message of the scrambling power is sent to the first AP, so that the first AP controls the noise generator to transmit noise in the coverage of the cell where the first AP is located according to the scrambling power, or the AC directly controls the noise according to the determined scrambling power. The generator emits noise within the coverage of the cell in which the first AP is located. The first STA or the AC control noise generator transmits noise in the coverage of the cell where the first AP is located, so that when the first AP sends downlink data in the same or overlapping transmission period as the second AP, the first STA only Demodulating the downlink data sent by the first AP without demodulating the downlink data sent by the second AP, thereby increasing the concurrency rate of the intra-frequency APs with smaller spacing, thereby satisfying the demand for the throughput of the application scenario, and The technology reduces the deployment cost and labor cost by improving the isolation of the same-frequency AP and the concurrency rate of the same-frequency AP with smaller spacing, and improves the throughput and spectrum utilization of the system.

Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above functional modules is illustrated. In practical applications, the above functions can be allocated according to needs. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

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

The units described as separate components may or may not be physically separated, and the components displayed as the unit may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . Some or all of the units may be selected to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product in the form of a software product, or a part of the technical solution, which is stored in a storage medium. A number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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

Claims

Claim

A first access point (English: Access Point; abbreviation: AP), which is characterized in that it is included in a wireless office i or a network (English: Wireless Local Area Network; WLAN) system, and the WLAN system is further The method includes: a first station (English: Station; abbreviation: STA) associated with the first AP, and an access controller (English: Access Controller; abbreviation: AC);

The detecting unit is configured to detect a degree that the receiver of the first STA is locked; the sending unit is configured to send, to the AC, a lock notification message that carries a lock parameter, so that the AC is configured according to the lock parameter Determining the scrambling power; wherein the locking parameter is used to indicate a degree to which the receiver of the first STA is locked;

The receiving unit is configured to receive, by the AC, a scrambling control message that carries the scrambled power;

And the power control unit is configured to control the noise generator to emit noise in a coverage area of the cell where the first AP is located according to the scrambling power received by the receiving unit.

The first AP according to claim 1, wherein the first AP further includes: an obtaining unit and an adjusting unit;

The sending unit is further configured to send, by the acquiring unit, a signal strength of the channel acquired by the acquiring unit to the AC, so that the AC determines, according to a signal strength of the channel, a transceiving parameter of the first AP. a first threshold value, wherein a first threshold value of the transceiver parameter is greater than an intensity of the interference signal and less than an intensity of the useful signal;

The first AP according to claim 2, wherein the transceiver parameter of the first AP includes a channel idle assessment (C: Clear Channel Assessment; CCA) threshold of the first AP, The WLAN system further includes: a second AP, where the second AP has co-channel interference with the first AP;

The acquiring unit is further configured to re-acquire the signal strength of the channel after the adjusting unit adjusts the transceiving parameter of the first AP from the second threshold to the first threshold.

The sending unit is further configured to: when the signal strength of the channel acquired by the acquiring unit is less than a first threshold value of a CCA threshold of the first AP, being the same as or overlapping with the second AP During the transmission period, downlink data is sent to the first STA through the channel.

The first AP according to claim 2, wherein the receiving and receiving parameters of the first AP include the receiving sensitivity of the first AP, and the WLAN system further includes: a second STA, the second The STA has the same frequency interference as the first STA;

The first AP further includes: a demodulation unit;

The first AP according to any one of claims 1 to 4, wherein the detecting unit is configured to send a probe message to the first STA, and collect statistics on the first STA. a packet return rate for the probe text within a preset time period;

The first AP according to any one of claims 1 to 4, wherein the detecting unit is configured to send a probe message to the first STA, and collect statistics on the first STA. a packet return rate for the probe packet in a preset time period; and acquiring a degree to which the receiver of the first STA corresponding to the packet return rate is locked Value

The sending unit is configured to carry, in the lock notification message, the degree value of the degree of locking of the receiver of the first STA corresponding to the packet return rate obtained by the detecting unit to the Said AC.

The first AP according to any one of claims 1 to 6, wherein the first AP further comprises: a radio frequency control unit;

The radio frequency control unit is configured to control the noise generator to transmit the noise within a cell coverage range in which the first AP is located within a short interframe space (English: Short Interframe Space; SIFS) interval.

A first station (English: Station; abbreviation: STA), which is characterized in that it is included in a wireless office i or a network (English: Wireless Local Area Network; WLAN) system, and the WLAN system further includes: The first STA has an associated first access point (English: Access Point; abbreviation: AP) and an access controller (English: Access Controller; abbreviation: AC); the first STA includes: a processing unit or a a demodulation unit;

Or the first demodulation unit, configured to: after the first AP controls the noise generator to transmit the noise in a cell coverage area where the first AP is located, demodulate the first AP to send The downlink data is sent by the first AP in the same or overlapping time period as the second AP, and the first AP and the second AP have the same frequency interference;

The noise is that the first AP, after receiving the scrambling control message of the AC, controls the noise generator to be transmitted within the coverage of the cell where the first AP is located.

The first STA according to claim 8, wherein the transceiving parameter of the first STA includes a receiving sensitivity of the first STA;

When the first STA includes the processing unit, the first STA further includes: a second demodulation unit;

The second demodulation unit is configured to: after the processing unit increases a threshold value of the transceiver parameter of the first STA according to the noise, according to the improved first STA of the processing unit And receiving, by the first AP, the downlink data sent by the first AP, where the downlink data is sent by the first AP in the same or overlapping transmission period as the second AP.

The first STA according to claim 8, wherein the transceiver parameters of the first STA include a channel idle assessment (C: CCA) threshold of the first STA, The WLAN system further includes: a second STA, where the second STA has co-channel interference with the first STA;

The sending unit is configured to: when the signal strength of the channel is less than a threshold value of the CSA threshold of the first STA that is raised, in a sending period that is the same as or overlaps with the second STA, The channel transmits uplink data to the first AP.

An access controller (English: Access Controller; abbreviation: AC), which is characterized in that it is included in a wireless local area network (English: Wireless Local Area Network; WLAN) system, and the WLAN system further includes: An access point (English: Access Point; abbreviation: AP), and a first site associated with the first AP (English: Station; abbreviation: STA);

The AC includes: a receiving unit, a determining unit, and a sending unit or a power control unit;

The receiving unit is configured to receive, by the first AP, a lock notification message that carries a lock parameter, where the lock parameter is used to indicate a degree to which the receiver of the first STA is locked;

The determining unit is configured to determine a scrambling power according to the locking parameter received by the receiving unit; The sending unit is configured to carry the scrambled power obtained by the determining unit in a scrambling control message to the first AP, so that the first AP controls noise generation according to the scrambling power The device transmits noise in a coverage area of the cell where the first AP is located; or the power control unit is configured to control the noise generator in the first according to the scramble power obtained by the determining unit The noise is transmitted within the coverage of the cell where the AP is located.

A method for transmitting a noise, which is characterized in that it is applied to a wireless local area network (English: Wireless Local Area Network; WLAN) system, and the WLAN system includes: a first access point (English: Access Point; abbreviation: AP a first site (English: Station; abbreviation: STA) associated with the first AP, and an access controller (English: Access Controller; abbreviation: AC); the method includes:

Receiving, by the first A P, a scrambling control message that is sent by the A C and carrying the scrambled power;

13. The method according to claim 12, wherein the method further comprises:

The first AP acquires a signal strength of the channel, where the signal strength of the channel includes an interference signal strength and a useful signal strength;

The first AP sends the signal strength of the channel to the AC, so that the AC determines a first threshold value of the transceiver parameters of the first AP according to the signal strength of the channel; The first threshold value of the transceiver parameter is greater than the strength of the interference signal and less than the strength of the useful signal;

Receiving, by the first AP, the first threshold value sent by the A C;

The first AP adjusts the transceiving parameter of the first AP to a second threshold value. The first threshold is used; wherein, the second threshold is a current threshold of the transceiver parameters of the first AP.

The method according to claim 13, wherein the transceiver parameter of the first AP includes a channel idle assessment (C: Clear Channel Assessment; CCA) threshold of the first AP, and the WLAN system The method further includes: a second AP, where the second AP has co-channel interference with the first AP;

After the first AP adjusts the transceiving parameter of the first AP by using the second threshold to the first threshold, the method further includes:

Reaching, by the first AP, a signal strength of the channel;

The method according to claim 13, wherein the receiving and receiving parameters of the first AP include the receiving sensitivity of the first AP, and the WLAN system further includes: a second STA, the second STA and The first STA has co-channel interference;

The first AP demodulates the uplink data sent by the first STA according to the first threshold of the receiving sensitivity of the first AP, where the uplink data is the first STA and the first STA The two STAs are sent in the same or overlapping transmission time period.

The method according to any one of claims 12-15, wherein the detecting, by the first AP, that the receiver of the first STA is locked comprises:

The first AP sends a probe message to the first STA, and collects a packet return rate of the first STA for the probe message in a preset time period;

17. A method according to any one of claims 12-15, characterized in that The first AP detects that the receiver of the first STA is locked, and the method includes: the first AP sending a probe message to the first STA, and counting the first

The return rate of the STA for the detected message within a preset time period;

The first AP carries the value of the degree of locking of the receiver of the first STA corresponding to the packet return rate in the lock notification message to the A C.

The method according to any one of claims 12-17, wherein, according to the scrambling power, the control noise generator emits noise in a coverage area of the cell where the first AP is located, including :

Transmitting, by the first AP, the noise generator in a short frame interval (English: Short Interframe Space; SIFS) interval according to the scrambling power, and transmitting in a cell coverage area where the first AP is located Said noise.

A method for transmitting a noise, which is characterized in that it is applied to a wireless local area network (English: Wireless Local Area Network; WLAN) system, and the WLAN system includes: a first access point (English: Access Point; abbreviation: AP ), with the said

― The AP has an associated first site (English: Station; abbreviation: STA), and an access controller (English: Access Controller; abbreviation: AC); the method includes: controlling the noise occurrence at the first AP After transmitting the noise in the coverage of the cell where the first AP is located, the first STA increases a threshold value of the transceiver parameter of the first STA according to the noise;

The noise is a scrambling control report that the first AP receives the AC. After the text, the noise generator is controlled to be transmitted within the coverage of the cell in which the first AP is located.

The method according to claim 19, wherein the receiving and receiving parameters of the first STA include a receiving sensitivity of the first STA;

When the first STA increases the threshold value of the sending and receiving parameters of the first STA according to the noise, after the first STA increases the threshold value of the sending and receiving parameters of the first STA according to the noise, , Also includes:

The method according to claim 19, wherein the transceiver parameters of the first STA include a channel idle assessment (CCA) threshold of the first STA, and the WLAN system The method further includes: a second STA, where the second STA has co-channel interference with the first STA;

After the first STA increases the threshold value of the transceiving parameter of the first STA according to the noise, after the first STA increases the threshold value of the transceiving parameter of the first STA according to the noise, Also includes:

The first STA acquires a signal strength of the channel;

When the signal strength of the channel is smaller than the threshold of the CSA threshold of the first STA, the first STA passes the channel during a transmission period that is the same as or overlaps with the second STA. Sending uplink data to the first AP.

The AC receives the lock notification message carrying the lock parameter sent by the first AP, where the lock parameter is used to indicate the extent to which the receiver of the first STA is locked; the AC determines according to the lock parameter. Scrambling power The AC carries the scrambled power in a scrambling control message and sends the signal to the first AP, so that the first AP controls the noise generator at the first AP according to the scramble power. Transmitting noise within the coverage of the cell; or, the AC, according to the scrambling power, controlling the noise generator to transmit noise within a coverage area of the cell where the first AP is located.

A first access point (English: Access Point; abbreviation: AP), which is characterized in that it is included in a wireless local area network (English: Wireless Local Area Network; WLAN) system, and the WLAN system further includes: The first AP has an associated first site (English: Station; abbreviation: STA), and an access controller (English: Access Controller; abbreviation: AC);

The first AP includes: a processor, a transmitter, and a receiver;

The processor is configured to detect a degree of locking of a receiver of the first STA, where the transmitter is configured to send a lock notification message carrying a lock parameter to the AC, so that the AC is configured according to the lock parameter Determining the scrambling power; wherein the locking parameter is used to indicate a degree to which the receiver of the first STA is locked;

The processor is further configured to control, according to the scrambled power received by the receiver, a noise generator to transmit noise in a coverage area of a cell where the first AP is located.

24. The first AP of claim 23, wherein

The processor is further configured to acquire a signal strength of the channel, where the signal strength of the channel includes an interference signal strength and a useful signal strength;

The transmitter is further configured to send, to the AC, a signal strength of the channel acquired by the processor, so that the AC determines, according to a signal strength of the channel, a transceiving parameter of the first AP. a first threshold value, wherein a first threshold value of the transceiver parameter is greater than an intensity of the interference signal and less than an intensity of the useful signal;

The receiver is further configured to receive the first threshold value that is sent by the AC, and the processor is further configured to adjust, by using a second threshold value, the transceiver parameter of the first AP to the first threshold a threshold value; wherein the second threshold is the sending and receiving of the first AP The current threshold of the parameter.

The first AP according to claim 24, wherein the transceiver parameter of the first AP includes a channel idle assessment (C: Clear Channel Assessment; CCA) threshold of the first AP, The WLAN system further includes: a second AP, where the second AP has co-channel interference with the first AP;

The processor is further configured to reacquire the signal strength of the channel after adjusting the transceiving parameter of the first AP by using the second threshold to the first threshold.

The transmitter is further configured to be the same as or overlap with the second AP when the signal strength of the channel acquired by the processor is less than a first threshold of a CCA threshold of the first AP During the transmission period, downlink data is sent to the first STA through the channel.

The first AP according to claim 24, wherein the receiving and receiving parameters of the first AP include the receiving sensitivity of the first AP, and the WLAN system further includes: a second STA, the second The STA has the same frequency interference as the first STA, and the processor is further configured to: after adjusting the transceiver parameter of the first AP from the second threshold to the first threshold, according to the The first threshold of the receiving sensitivity of the first AP, demodulating the uplink data sent by the first STA, where the uplink data is a sending time of the first STA being the same or overlapping with the second STA Sent within the segment.

The first AP according to any one of claims 23 to 26, wherein the processor is configured to send a probe packet to the first STA, and collect statistics on the first STA. a packet return rate for the detected message within a preset time period;

The transmitter is specifically configured to carry the return rate obtained by the processor to the AC in the lock notification message.

The first AP according to any one of claims 23 to 26, wherein the processor is configured to send a probe packet to the first STA, and collect statistics on the first STA. a packet return rate for the probe packet in a preset time period; and obtaining a degree of the extent to which the receiver of the first STA is locked according to the packet return rate; the transmitter is specifically configured to The packet and the packet return rate obtained by the processor The value of the extent to which the receiver of the first STA is locked is carried in the lock notification message and sent to the AC.

The first AP according to any one of claims 23-28, wherein the processor is further configured to control the noise generator at a short frame interval (English:

Short Interframe Space; Short for: SIFS) The interval is transmitted within the coverage of the cell in which the first AP is located.

30. A first station (English: Station; abbreviation: STA), which is included in a wireless office i or a network (English: Wireless Local Area Network; WLAN) system, the WLAN system further includes: The first STA has an associated first access point (English: Access Point; abbreviation: AP) and an access controller (English: Access Controller; abbreviation: AC); the first STA includes: a processor; a processor, configured to: after the first AP control noise generator emits noise in a cell coverage area where the first AP is located, increase a threshold value of a transceiving parameter of the first STA according to the noise;

The first STA according to claim 30, wherein the receiving and receiving parameters of the first STA include a receiving sensitivity of the first STA;

When the processor is configured to increase a threshold value of the transmit and receive parameters of the first STA according to the noise, the processor is further configured to: increase a threshold of the transmit and receive parameters of the first STA according to the noise After the value, the downlink data sent by the first AP is demodulated according to the obtained threshold value of the received sensitivity of the first STA, where the downlink data is the first AP and the Same or overlapping transmission time period of the second AP Sent within.

The first STA according to claim 30, wherein the transceiver parameter of the first STA includes a channel idle assessment (CCA) threshold of the first STA, The WLAN system further includes: a second STA, where the second STA has co-channel interference with the first STA;

When the processor is configured to increase a threshold value of the transmit and receive parameters of the first STA according to the noise, the first STA further includes: a transmitter;

33. An access controller (English: Access Controller; abbreviation: AC), which is characterized in that it is included in a wireless local area network (English: Wireless Local Area Network; WLAN) system, and the WLAN system further includes: An access point (English: Access Point; abbreviation: AP), and a first site associated with the first AP (English: Station; abbreviation: STA);

The AC includes: a receiver, a processor, or a transmitter;

The processor is configured to determine a scrambling power according to the locking parameter received by the receiver;