CN103763739A - Wireless local area network communication method and wireless local area network communication device - Google Patents
Wireless local area network communication method and wireless local area network communication device Download PDFInfo
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Abstract
The invention provides a wireless local area network communication method which includes the steps of generating a beacon frame, adjusting the transmitting power and / or a modulation coding mode of the beacon frame in real time, and sending the beacon frame. The invention further provides a wireless local area network communication device. According to the technical scheme, the sending range of the beacon frame can be dynamically adjusted, the OBSS forming probability is reduced while it is guaranteed that an STA successfully receives the beacon frame, and the spectrum efficiency and the throughput capacity in an area are beneficially improved.
Description
Technical field
The present invention relates to wireless LAN communication technical field, in particular to a kind of Wireless LAN communication method and a kind of wireless LAN communication equipment.
Background technology
In 802.11,2013.5 have set up the new HEW(High Efficiency WLAN of seminar), study Wi-Fi technology of future generation, the vision of proposition is the utilance that improves the throughput in region and improve frequency spectrum, and has proposed HEW and should be applicable to the more communication environment of crypto set.
In existing Wi-Fi technology, AP(Access Point, access point) periodically send Beacon(beacon) frame, be probably 100ms once, and send Beacon frame at every turn and use basic MCS mode and maximum transmitting power.
But, when adopting aforesaid way to send Beacon frame, certainly will cause forming a large amount of OBSS(Overlapping Basis Service Set, overlapping basic service set between AP), reduced the utilization ratio of frequency spectrum, run counter to the vision that HEW proposes.
Therefore, how to avoid AP to produce OBSS when sending beacon frame, meet the vision that HEW proposes, become technical problem urgently to be resolved hurrily at present.
Summary of the invention
The present invention is just based on the problems referred to above, proposed a kind of new technical scheme, can dynamically adjust the range of transmission of beacon frame, when guaranteeing the smooth received beacon frame of STA, reduce the probability that forms OBSS, contribute to improve the throughput in the availability of frequency spectrum and region.
In view of this, the present invention proposes a kind of Wireless LAN communication method, comprising: generate beacon frame, and adjust in real time transmitting power and/or the modulation coding mode (MCS, Modulation and Coding Scheme) of described beacon frame; Send described beacon frame.
In this technical scheme, by the transmitting power to beacon frame and/or modulation coding mode, adjust in real time, the range of transmission of correspondingly having realized beacon frame is controlled.Wherein, by dwindling the range of transmission of beacon frame, contribute to reduce the possibility that forms OBSS; And by expanding the range of transmission of beacon frame, contribute to guarantee the effective reception of periphery STAs to beacon frame, avoid affecting the normal connection procedure of STAs and AP.
Particularly, such as by reducing transmitting power and/or improving transmission rate corresponding to modulation coding mode, can be used in the range of transmission that dwindles beacon frame; Or, by improving transmitting power and/or reducing transmission rate corresponding to modulation coding mode, can be used in the range of transmission that expands beacon frame.
In technique scheme, preferably, before sending described beacon frame, also comprise: receipt message frame, and obtain respectively the received signal strength indicator information that each described message frame is corresponding; And according to the minimum value in all received signal strength indicator information, adjust in real time transmitting power and/or the modulation coding mode of described beacon frame.
In this technical scheme, by obtaining the received signal strength indicator (RSSI of message frame, Received Signal Strength Indication) information, and the numerical value of RSSI and transmission range are negative correlation, make AP can recognize the distance of corresponding STA, and determine accordingly transmitting power and/or the modulation coding mode of beacon frame.
Wherein, if after the transmit operation for the first time of beacon frame, before transmit operation for the second time, receive the message frame from multiple STAs, should be minimum with RSSI value, distance STA is farthest as the criterion and determines transmitting power and/or the modulation coding mode of beacon frame, to make all STAs can both receive smoothly beacon frame.
In technique scheme, preferably, transmitting power and/or the modulation coding mode of adjusting in real time described beacon frame specifically comprise: according to the minimum value in described all received signal strength indicator information, and the corresponding relation between received signal strength indicator information and transmitting power and/or the modulation coding mode of pre-stored, determine transmitting power and/or the modulation coding mode of corresponding described particular message frame; Wherein, in the described corresponding relation of pre-stored, the numerical value of received signal strength indicator information and the numerical value of transmitting power are negative correlation, and the transmission rate that the numerical value of received signal strength indicator information is corresponding with modulation coding mode is proportionate.
In this technical scheme, by in advance the corresponding relation between RSSI value and transmitting power and/or modulation coding mode being stored in AP, make the AP can be according to the RSSI value of the message frame receiving in real time, determine and select corresponding transmitting power and/or modulation coding mode, the transmission of realization to beacon frame, the range of transmission of guaranteeing beacon frame is dynamically controlled, avoids the generation of OBSS as far as possible, thereby contributes to improve the throughput in frequency efficiency and region.
Wherein, when RSSI value is larger, show the close together of corresponding STA and AP, need to, with lower transmitting power and/or larger transmission rate, to realize, in more among a small circle, send beacon frame; And when RSSI value hour, show the distant of corresponding STA and AP, need to be with higher transmitting power and/or less transmission rate, to realize transmission beacon frame in a big way.
In above-mentioned arbitrary technical scheme, preferably, described message frame comprises Frame or management frames.
In technique scheme, preferably, described management frames comprises probe request or association request frame.
The invention allows for a kind of wireless LAN communication equipment, comprising: data processing module, for generating beacon frame, and adjust in real time transmitting power and/or the modulation coding mode of described beacon frame; Data interaction module, for sending described beacon frame.
In this technical scheme, by the transmitting power to beacon frame and/or modulation coding mode, adjust in real time, the range of transmission of correspondingly having realized beacon frame is controlled.Wherein, by dwindling the range of transmission of beacon frame, contribute to reduce the possibility that forms OBSS; And by expanding the range of transmission of beacon frame, contribute to guarantee the effective reception of periphery STAs to beacon frame, avoid affecting the normal connection procedure of STAs and AP.
Particularly, such as by reducing transmitting power and/or improving transmission rate corresponding to modulation coding mode, can be used in the range of transmission that dwindles beacon frame; Or, by improving transmitting power and/or reducing transmission rate corresponding to modulation coding mode, can be used in the range of transmission that expands beacon frame.
Wherein, wireless LAN communication equipment can be AP, and data processing module can be the chip module of data processing in wireless LAN communication equipment, and data interaction module is equivalent to signal receiving/transmission device and antenna etc.
In technique scheme, preferably, described data processing module also for: sending before described beacon frame, receipt message frame also obtains respectively the received signal strength indicator information that each described message frame is corresponding; And according to the minimum value in all received signal strength indicator information, adjust in real time transmitting power and/or the modulation coding mode of described beacon frame.
In this technical scheme, by obtaining the received signal strength indicator (RSSI of message frame, Received Signal Strength Indication) information, and the numerical value of RSSI and transmission range are negative correlation, make AP can recognize the distance of corresponding STA, and determine accordingly transmitting power and/or the modulation coding mode of beacon frame.
Wherein, if after the transmit operation for the first time of beacon frame, before transmit operation for the second time, receive the message frame from multiple STAs, should be minimum with RSSI value, distance STA is farthest as the criterion and determines transmitting power and/or the modulation coding mode of beacon frame, to make all STAs can both receive smoothly beacon frame.
In technique scheme, preferably, described data processing module specifically for: according to the minimum value in described all received signal strength indicator information, and the corresponding relation between received signal strength indicator information and transmitting power and/or the modulation coding mode of pre-stored, determine transmitting power and/or the modulation coding mode of corresponding described particular message frame; Wherein, in the described corresponding relation of pre-stored, the numerical value of received signal strength indicator information and the numerical value of transmitting power are negative correlation, and the transmission rate that the numerical value of received signal strength indicator information is corresponding with modulation coding mode is proportionate.
In this technical scheme, by in advance the corresponding relation between RSSI value and transmitting power and/or modulation coding mode being stored in AP, make the AP can be according to the RSSI value of the message frame receiving in real time, determine and select corresponding transmitting power and/or modulation coding mode, the transmission of realization to beacon frame, the range of transmission of guaranteeing beacon frame is dynamically controlled, avoids the generation of OBSS as far as possible, thereby contributes to improve the throughput in frequency efficiency and region.
Wherein, when RSSI value is larger, show the close together of corresponding STA and AP, need to, with lower transmitting power and/or larger transmission rate, to realize, in more among a small circle, send beacon frame; And when RSSI value hour, show the distant of corresponding STA and AP, need to be with higher transmitting power and/or less transmission rate, to realize transmission beacon frame in a big way.
In above-mentioned arbitrary technical scheme, preferably, described message frame comprises Frame or management frames.
In technique scheme, preferably, described management frames comprises probe request or association request frame.
By above technical scheme, can dynamically adjust the range of transmission of beacon frame, when guaranteeing the smooth received beacon frame of STA, reduce the probability that forms OBSS, contribute to improve the throughput in the availability of frequency spectrum and region.
Accompanying drawing explanation
Fig. 1 shows the schematic flow diagram of Wireless LAN communication method according to an embodiment of the invention;
Fig. 2 shows the schematic flow diagram of the send mode of dynamic mouse beacon frame according to an embodiment of the invention;
Fig. 3 shows the schematic diagram of the send mode of dynamic mouse beacon frame according to an embodiment of the invention;
Fig. 4 shows the schematic diagram of the send mode of dynamic mouse beacon frame according to another embodiment of the invention;
Fig. 5 shows the schematic block diagram of wireless LAN communication equipment according to an embodiment of the invention.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Fig. 1 shows the schematic flow diagram of Wireless LAN communication method according to an embodiment of the invention.
As shown in Figure 1, Wireless LAN communication method according to an embodiment of the invention, comprising:
In this technical scheme, by the transmitting power to beacon frame and/or modulation coding mode, adjust in real time, the range of transmission of correspondingly having realized beacon frame is controlled.Wherein, by dwindling the range of transmission of beacon frame, contribute to reduce the possibility that forms OBSS; And by expanding the range of transmission of beacon frame, contribute to guarantee the effective reception of periphery STAs to beacon frame, avoid affecting the normal connection procedure of STAs and AP.
Particularly, such as by reducing transmitting power and/or improving transmission rate corresponding to modulation coding mode, can be used in the range of transmission that dwindles beacon frame; Or, by improving transmitting power and/or reducing transmission rate corresponding to modulation coding mode, can be used in the range of transmission that expands beacon frame.
As comparatively preferred embodiment of one, Fig. 2 shows the schematic flow diagram of the send mode of dynamic mouse beacon frame according to an embodiment of the invention.
As shown in Figure 2, the send mode of dynamic mouse beacon frame according to an embodiment of the invention can comprise:
In this technical scheme, by obtaining the received signal strength indicator (RSSI of message frame, Received Signal Strength Indication) information, and the numerical value of RSSI and transmission range are negative correlation, make AP can recognize the distance of corresponding STA, and determine accordingly transmitting power and/or the modulation coding mode of beacon frame.
Wherein, if after the transmit operation for the first time of beacon frame, before transmit operation for the second time, receive the message frame from multiple STAs, should be minimum with RSSI value, distance STA is farthest as the criterion and determines transmitting power and/or the modulation coding mode of beacon frame, to make all STAs can both receive smoothly beacon frame.
Particularly, based on aforesaid way, for the range of transmission of beacon frame, may dwindle or expand, specifically depend on actual demand and object.For two kinds of comparatively preferred concrete scenes, in conjunction with Fig. 3 and Fig. 4, be elaborated below.
Embodiment mono-
Fig. 3 shows the schematic diagram of the send mode of dynamic mouse beacon frame according to an embodiment of the invention.
As shown in Figure 3, suppose and have AP1 and AP2, and STA1 and STA2.When AP2 and STA2 connect, suppose in the circular scope for AP2 transmission beacon frame of solid line Fig. 3 right side, that comprise AP2 and STA2.
The circular scope representing take dotted line in Fig. 3 as AP1 during as the range of transmission of beacon frame, by overlapping with the range of transmission of AP2, has formed OBSS.And in fact, because the position of STA1 is not in the signal range of transmission in AP2, thereby AP1 can, by dwindling the range of transmission of beacon frame, make it can either meet holding STA1, can avoid again with the range of transmission of AP2 form overlapping, to avoid producing OBSS.
Particularly, AP1 can, by receiving Frame or the management frames from STA1, ask (Association Request) frame such as being specifically as follows association, and according to corresponding RSSI value, determine tranmitting frequency and/or modulation coding mode to beacon frame, to adjust the range of transmission of beacon frame.
Embodiment bis-
Fig. 4 shows the schematic diagram of the send mode of dynamic mouse beacon frame according to another embodiment of the invention.
As shown in Figure 4, suppose and have AP1 and AP2, and STA1.When AP1 sends beacon frame with the dotted line scope shown in Fig. 4, because STA1 is positioned at outside this scope, will possibly cannot receive the beacon frame from AP1.
Therefore, AP1 can pass through to receive Frame or the management frames from STA1, such as being specifically as follows probe requests thereby (Probe Request) frame, and according to corresponding RSSI value, determine tranmitting frequency and/or modulation coding mode to beacon frame, to adjust the range of transmission of beacon frame.
Particularly, such as AP1 by the range of transmission of beacon frame dotted line scope be as shown in Figure 4 adjusted to left side solid line circular scope, make AP1 can pass through to expand the range of transmission of beacon frame, make it can either meet holding STA1, can avoid again with the range of transmission of AP2 form overlapping, to avoid producing OBSS.
In above-mentioned arbitrary technical scheme, preferably, transmitting power and/or the modulation coding mode of adjusting in real time described beacon frame specifically comprise: according to the minimum value in described all received signal strength indicator information, and the corresponding relation between received signal strength indicator information and transmitting power and/or the modulation coding mode of pre-stored, determine transmitting power and/or the modulation coding mode of corresponding described particular message frame; Wherein, in the described corresponding relation of pre-stored, the numerical value of received signal strength indicator information and the numerical value of transmitting power are negative correlation, and the transmission rate that the numerical value of received signal strength indicator information is corresponding with modulation coding mode is proportionate.
In this technical scheme, by in advance the corresponding relation between RSSI value and transmitting power and/or modulation coding mode being stored in AP, make the AP can be according to the RSSI value of the message frame receiving in real time, determine and select corresponding transmitting power and/or modulation coding mode, the transmission of realization to beacon frame, the range of transmission of guaranteeing beacon frame is dynamically controlled, avoids the generation of OBSS as far as possible, thereby contributes to improve the throughput in frequency efficiency and region.
Wherein, when RSSI value is larger, show the close together of corresponding STA and AP, need to, with lower transmitting power and/or larger transmission rate, to realize, in more among a small circle, send beacon frame; And when RSSI value hour, show the distant of corresponding STA and AP, need to be with higher transmitting power and/or less transmission rate, to realize transmission beacon frame in a big way.
In addition,, for the AP that does not support dynamically to adjust Beacon frame transmitting power and/or MCS mode, can remove to send Beacon frame according to existing mode; And the AP that supports this function can receive old AP(and not support dynamic adjustment) send the RSSI of Beacon frame, and suitably adjust accordingly transmitting power and/or the MCS mode of self Beacon frame, thereby avoid forming OBSS as far as possible, and there will not be the compatibility issue of the old and new's equipment.
Fig. 5 shows the schematic block diagram of wireless LAN communication equipment according to an embodiment of the invention.
As shown in Figure 5, wireless LAN communication equipment 500 according to an embodiment of the invention, comprising: data processing module 502, for generating beacon frame, and adjust in real time transmitting power and/or the modulation coding mode of described beacon frame; Data interaction module 504, for sending described beacon frame.
In this technical scheme, by the transmitting power to beacon frame and/or modulation coding mode, adjust in real time, the range of transmission of correspondingly having realized beacon frame is controlled.Wherein, by dwindling the range of transmission of beacon frame, contribute to reduce the possibility that forms OBSS; And by expanding the range of transmission of beacon frame, contribute to guarantee the effective reception of periphery STAs to beacon frame, avoid affecting the normal connection procedure of STAs and AP.
Particularly, such as by reducing transmitting power and/or improving transmission rate corresponding to modulation coding mode, can be used in the range of transmission that dwindles beacon frame; Or, by improving transmitting power and/or reducing transmission rate corresponding to modulation coding mode, can be used in the range of transmission that expands beacon frame.
Wherein, wireless LAN communication equipment 500 can be AP, and data processing module 502 can be the chip module of data processing in wireless LAN communication equipment 500, and data interaction module 504 is equivalent to signal receiving/transmission device and antenna etc.
In technique scheme, preferably, described data processing module 502 also for: sending before described beacon frame, receipt message frame also obtains respectively the received signal strength indicator information that each described message frame is corresponding; And according to the minimum value in all received signal strength indicator information, adjust in real time transmitting power and/or the modulation coding mode of described beacon frame.
In this technical scheme, by obtaining the received signal strength indicator (RSSI of message frame, Received Signal Strength Indication) information, and the numerical value of RSSI and transmission range are negative correlation, make AP can recognize the distance of corresponding STA, and determine accordingly transmitting power and/or the modulation coding mode of beacon frame.
Wherein, if after the transmit operation for the first time of beacon frame, before transmit operation for the second time, receive the message frame from multiple STAs, should be minimum with RSSI value, distance STA is farthest as the criterion and determines transmitting power and/or the modulation coding mode of beacon frame, to make all STAs can both receive smoothly beacon frame.
In technique scheme, preferably, described data processing module 502 specifically for: according to the minimum value in described all received signal strength indicator information, and the corresponding relation between received signal strength indicator information and transmitting power and/or the modulation coding mode of pre-stored, determine transmitting power and/or the modulation coding mode of corresponding described particular message frame; Wherein, in the described corresponding relation of pre-stored, the numerical value of received signal strength indicator information and the numerical value of transmitting power are negative correlation, and the transmission rate that the numerical value of received signal strength indicator information is corresponding with modulation coding mode is proportionate.
In this technical scheme, by in advance the corresponding relation between RSSI value and transmitting power and/or modulation coding mode being stored in AP, make the AP can be according to the RSSI value of the message frame receiving in real time, determine and select corresponding transmitting power and/or modulation coding mode, the transmission of realization to beacon frame, the range of transmission of guaranteeing beacon frame is dynamically controlled, avoids the generation of OBSS as far as possible, thereby contributes to improve the throughput in frequency efficiency and region.
Wherein, when RSSI value is larger, show the close together of corresponding STA and AP, need to, with lower transmitting power and/or larger transmission rate, to realize, in more among a small circle, send beacon frame; And when RSSI value hour, show the distant of corresponding STA and AP, need to be with higher transmitting power and/or less transmission rate, to realize transmission beacon frame in a big way.
In above-mentioned arbitrary technical scheme, preferably, described message frame comprises Frame or management frames.
In technique scheme, preferably, described management frames comprises probe request or association request frame.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of Wireless LAN communication method and a kind of wireless LAN communication equipment, can dynamically adjust the range of transmission of beacon frame, when guaranteeing the smooth received beacon frame of STA, reduce the probability that forms OBSS, contribute to improve the throughput in the availability of frequency spectrum and region.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a Wireless LAN communication method, is characterized in that, comprising:
Generate beacon frame, and adjust in real time transmitting power and/or the modulation coding mode of described beacon frame;
Send described beacon frame.
2. Wireless LAN communication method according to claim 1, is characterized in that, before sending described beacon frame, also comprises:
Receipt message frame, and obtain respectively the received signal strength indicator information that each described message frame is corresponding; And
According to the minimum value in all received signal strength indicator information, adjust in real time transmitting power and/or the modulation coding mode of described beacon frame.
3. Wireless LAN communication method according to claim 2, is characterized in that, transmitting power and/or the modulation coding mode of adjusting in real time described beacon frame specifically comprise:
According to the minimum value in described all received signal strength indicator information, and the corresponding relation between received signal strength indicator information and transmitting power and/or the modulation coding mode of pre-stored, determine transmitting power and/or the modulation coding mode of corresponding described particular message frame;
Wherein, in the described corresponding relation of pre-stored, the numerical value of received signal strength indicator information and the numerical value of transmitting power are negative correlation, and the transmission rate that the numerical value of received signal strength indicator information is corresponding with modulation coding mode is proportionate.
4. according to the Wireless LAN communication method described in any one in claims 1 to 3, it is characterized in that, described message frame comprises Frame or management frames.
5. Wireless LAN communication method according to claim 4, is characterized in that, described management frames comprises probe request or association request frame.
6. a wireless LAN communication equipment, is characterized in that, comprising:
Data processing module, for generating beacon frame, and adjusts transmitting power and/or the modulation coding mode of described beacon frame in real time;
Data interaction module, for sending described beacon frame.
7. wireless LAN communication equipment according to claim 6, is characterized in that, described data processing module also for:
Before sending described beacon frame, receipt message frame also obtains respectively the received signal strength indicator information that each described message frame is corresponding; And
According to the minimum value in all received signal strength indicator information, adjust in real time transmitting power and/or the modulation coding mode of described beacon frame.
8. wireless LAN communication equipment according to claim 7, is characterized in that, described data processing module specifically for:
According to the minimum value in described all received signal strength indicator information, and the corresponding relation between received signal strength indicator information and transmitting power and/or the modulation coding mode of pre-stored, determine transmitting power and/or the modulation coding mode of corresponding described particular message frame;
Wherein, in the described corresponding relation of pre-stored, the numerical value of received signal strength indicator information and the numerical value of transmitting power are negative correlation, and the transmission rate that the numerical value of received signal strength indicator information is corresponding with modulation coding mode is proportionate.
9. according to the wireless LAN communication equipment described in any one in claim 6 to 8, it is characterized in that, described message frame comprises Frame or management frames.
10. wireless LAN communication equipment according to claim 9, is characterized in that, described management frames comprises probe request or association request frame.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208658A (en) * | 2015-08-25 | 2015-12-30 | 魅族科技（中国）有限公司 | Wireless local area network communication method and communication device |
| CN105376756A (en) * | 2014-08-26 | 2016-03-02 | 杭州华三通信技术有限公司 | Terminal control method and equipment |
| CN105430732A (en) * | 2015-11-03 | 2016-03-23 | 广东欧珀移动通信有限公司 | WIFI transmitting power regulation method, terminal and system |
| CN105991173A (en) * | 2015-02-17 | 2016-10-05 | 启碁科技股份有限公司 | Wireless network base station and antenna selection method |
| CN109640484A (en) * | 2018-12-26 | 2019-04-16 | 合肥大明节能科技股份有限公司 | Single-lamp controller |
| CN111294837A (en) * | 2018-12-10 | 2020-06-16 | 半导体元件工业有限责任公司 | Adaptive spatial multiplexing |
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2014
- 2014-01-21 CN CN201410028434.2A patent/CN103763739A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376756A (en) * | 2014-08-26 | 2016-03-02 | 杭州华三通信技术有限公司 | Terminal control method and equipment |
| CN105991173A (en) * | 2015-02-17 | 2016-10-05 | 启碁科技股份有限公司 | Wireless network base station and antenna selection method |
| CN105991173B (en) * | 2015-02-17 | 2019-09-13 | 启碁科技股份有限公司 | Wireless network base station and antenna selecting method |
| CN105208658A (en) * | 2015-08-25 | 2015-12-30 | 魅族科技（中国）有限公司 | Wireless local area network communication method and communication device |
| CN105208658B (en) * | 2015-08-25 | 2018-07-31 | 魅族科技（中国）有限公司 | The communication means and communication device of WLAN |
| CN105430732A (en) * | 2015-11-03 | 2016-03-23 | 广东欧珀移动通信有限公司 | WIFI transmitting power regulation method, terminal and system |
| CN111294837A (en) * | 2018-12-10 | 2020-06-16 | 半导体元件工业有限责任公司 | Adaptive spatial multiplexing |
| CN111294837B (en) * | 2018-12-10 | 2024-02-02 | 半导体元件工业有限责任公司 | Adaptive spatial multiplexing |
| CN109640484A (en) * | 2018-12-26 | 2019-04-16 | 合肥大明节能科技股份有限公司 | Single-lamp controller |
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