CN103997755B - Wireless device signal transmission method and its device - Google Patents
Wireless device signal transmission method and its device Download PDFInfo
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- CN103997755B CN103997755B CN201410159653.4A CN201410159653A CN103997755B CN 103997755 B CN103997755 B CN 103997755B CN 201410159653 A CN201410159653 A CN 201410159653A CN 103997755 B CN103997755 B CN 103997755B
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Abstract
The invention discloses a kind of wireless device signal transmission method, comprise the following steps：（1）Radio reception device carries out 802. 11 link negotiations with wireless client, and sets up connection, starts data message interaction；（2）Whether the wireless client linking number checked on radio reception device is less than predetermined threshold value, if being less than predetermined threshold value, beacon frame Beacon is sent simultaneously using at least two antennas, and increase transmit power, conversely, then sending beacon frame Beacon according to ordinary power by single antenna；（3）Check the transmission rate of data message, and STBC functions and RTS/CTS functions are adjusted according to relation of the transmission rate with 802.11；（4）Data message transmission, completes information exchange.Present invention also offers corresponding wireless device signal transmitting device, it is engaged with transmission method, not only reduces packet loss and the bit error rate, also ensures bandwidth availability ratio, with practical value and promotional value very high.
Description
Technical field
It is to be related to a kind of the wireless of transmission reliability that can improve to set specifically the present invention relates to a kind of wireless device
Standby method for transmitting signals and its device.
Background technology
In recent years, being continuously increased with mobile subscriber number and real-time multimedia data portfolio, user is to wireless
LAN（WLAN）Increasingly improved in the demand of the aspects such as bandwidth, performance, coverage.At present, the representational marks of WLAN
Standard is 802.11.But because the factors such as useful signal coverage, the available network bandwidth by Wireless Communication Equipment are influenceed, in reality
Often there is no signal or jitter phenomenon in the application of border；Further, since the unreliability of wireless network transmissions channel, makes
In obtaining WLAN there is larger packet loss or the bit error rate in data transfer.Therefore, some have been proposed at present effectively improves system
The scheme of transmission performance, such as, 802. 11 media access control (Media Access Control, MAC) layer specification please
Ask transmission（Request to Send, RTS）With empty transmission（Clear to Send, CTS）Control frame is emptying wireless environment；
Space Time Coding is carried out using multiple antennas（Space Time Block Code, STBC）To reduce bit error rate etc..Although these schemes
Can solve the above problems, but occupy network bandwidth resources again to a certain extent, reduce bandwidth availability ratio.How in drop
Bandwidth usage is not influenceed while low packet loss ratio, the bit error rate, is always the problem for perplexing this area development, it would be highly desirable to solve.
The content of the invention
It is an object of the invention to provide a kind of wireless device signal transmission method, from the reality of existing WLAN application scenarios
Demand is set out, and Optimized Measures is proposed at signal cover, three aspects of channel capacity and transmission quality, so as to solve existing
The problem that technology is present.
To achieve these goals, the technical solution adopted by the present invention is as follows：
Wireless device signal transmission method, comprises the following steps：
（1）Radio reception device carries out 802.11 link negotiations with wireless client, and sets up connection, starts data message
Interaction；
（2）Whether the wireless client linking number checked on radio reception device is less than predetermined threshold value, if less than default
Threshold value, then send beacon frame Beacon simultaneously using at least two antennas, and increases transmit power, conversely, then by single day
Line sends beacon frame Beacon according to ordinary power；
（3）Check the transmission rate of data message, and STBC functions are adjusted according to relation of the transmission rate with 802.11
With RTS/CTS functions；
（4）Data message transmission, completes information exchange.
Further, the step（2）The mode of middle increase transmit power is as follows：Default transmit power increases Grad,
And power increase is transmitted by the way of being incremented by step by step.
Yet further, the step（3）The specific method of middle adjustment STBC functions and RTS/CTS functions is as follows：
If transmission rate belongs to 802.11n standards and MCS8-MCS15, STBC functions are closed, open RTS/CTS work(
Energy；
If transmission rate belongs to 802.11n standards and MCS0-MCS7, or 802.11g standards, then open STBC functions with
RTS/CTS functions；
If transmission rate belongs to 802.11b standards, STBC functions are opened, then, then check that wireless client is connected
Number, if wireless client linking number is less than predetermined threshold value, closes RTS/CTS functions, otherwise, opens RTS/CTS work(
Energy.
In order to reduce the bit error rate, the present invention also carries out Space Time Coding using redundant antenna, to improve the quality of data transfer.
Based on techniques described above, present invention also offers corresponding wireless device signal transmitting device, including for
The initialization module of wireless client connection, is connected, with the initialization module for carrying out data message hair with wireless client
The transceiver module of operation is sent and received, and is connected with the transceiver module, is sent for mouse beacon frame Beacon, adjusts RTS/
The control module of CTS mechanism and STBC functions.
Specifically, the control module includes multiple antennas transmit power control being connected with the transceiver module respectively
Module, RTS/CTS control submodules and STBC coding-control submodules.
Compared with prior art, the invention has the advantages that：
（1）The present invention sends beacon frame Beacon simultaneously using multiple antennas according to actual needs, and increases transmit power,
So as to enhance service cluster mark（Service Set Identity, SSID）Perceptibility and wireless signal covering model
Enclose, largely reduce packet loss.
（2）The present invention is closed and opened according to the transmission rate of data to RTS/CTS control frames and STBC codings
Operation, so that the active volume of wireless channel real-time change as needed, correspondingly makes the effective rate of utilization of wireless channel
Effective lifting is obtained, that is, ensure that bandwidth availability ratio.
（3）The present invention carries out Space Time Coding using the antenna of non-usage, has both realized the utilization of redundant antenna, improves again
The quality of data transfer, kills two birds with one stone.
（4）The present invention sets about in terms of signal cover, channel capacity and transmission quality three, comes according to the actual requirements
Corresponding optimizing regulation is carried out, so that Wireless Data Transmission had both reduced packet loss and the bit error rate, and bandwidth is not influenceed
Utilization rate, compared to existing technologies, has very significant effect in technological progress, and practical value is very high.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of transmission of wireless signals in the present invention.
Fig. 2 is effect contrast figure of the present invention after RTS/CTS functions are adjusted with prior art in embodiment.
Fig. 3 is effect contrast figure of the present invention after STBC functions are adjusted with prior art in embodiment.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention are included but is not limited to
The following example.
Embodiment
As shown in figure 1, the wireless device signal transmission method that the present invention is provided, it is intended to realize packet loss, the bit error rate and band
Taking into account in terms of utilization rate wide three, it is comprised the following steps that：
First, 802. 11 link negotiations are realized by many antennas by radio reception device and wireless client, the company of foundation
Connect, and proceed by data-message transmission.Assuming that under home environment, being initialized by initialization module, make seven wirelessly
Client sets up 802. 11 link connections with same radio reception device successively, completes the preparation before data message.
Now, whether the linking number for first checking for wireless client connection radio reception device reaches predetermined threshold value, false
If predetermined threshold value is 1, then check whether the linking number on every wireless client reaches 1, if not up to, it is corresponding wireless
Client sends beacon frame Beacon simultaneously using at least two antennas, and increases transmit power, and linking number reaches 1 nothing
Line client, then send beacon frame Beacon using single antenna according to ordinary power.When transmit power is increased, first set solid
Fixed transmit power increases Grad, is then continued to increase by the way of being incremented by step by step, until the company of this wireless client
Connect untill number reaches 1.For example：If it is 2dB that transmit power increases Grad, then when transmit power is increased, according to increasing every time
Plus the gradient of 2dB increases transmit power step by step, until the linking number of this wireless client reaches 1.By using many
The mode that antenna is continuously increased transmit power simultaneously sends beacon frame Beacon, such that it is able to make the coverage of wireless signal by
Cumulative to add, service cluster mark perceptibility is effectively strengthened, and is finally successfully established the wireless signal port of failed connection
Connection, it is ensured that the smooth transmission of wireless signal, improves the reliability of transmission of wireless signals.
Afterwards, data message is proceeded by between wireless client and radio reception device to interact, now data transfer speed
Rate is checked, and judges which kind of standard it belongs to.
If transmission rate belongs to 802.11n standards and MCS8-MCS15, STBC functions are closed, open RTS/CTS work(
Energy；
If transmission rate belongs to 802.11n standards and MCS0-MCS7, or 802.11g standards, then open STBC functions with
RTS/CTS functions；
If message transmission rate belongs to 802.11b standards, STBC functions are opened, now, need to further check connection
Number, if linking number is less than predetermined threshold value, closes RTS/CTS functions, otherwise, opens RTS/CTS functions.
Heretofore described STBC functions, i.e. Space-Time Codes, and RTS/CTS functions to refer to then request send/it is clear
Except sending function, both technologies are very ripe in wireless communication field, are not described further herein.By according to data transfer
Speed judges to be wirelessly transferred standard belonging to it in real time, so that RTS/CTS functions are adjusted in real time, can be timely
Ground changes the data volume in wireless-transmission network, and being transmitted to make network channel provide more vacant capacities really needs to pass
Defeated data message, that is, effectively improve the active volume of wireless channel.And the timely switch of STBC functions, then can effectively drop
Low bit error rate when being wirelessly transferred, it is ensured that the quality of data transfer.
Be can be seen that by environmental attenuation 70db from such as Fig. 2 and Fig. 3, its data transfer is in 802.11b systems
Under formula, the difference that RTS/CTS functions are brought in terms of radio transmission performance is：The quantity of radio reception device is 1 ~ 3, is closed
RTS/CTS functions；Hosts quantity is 4 ~ 7, opens RTS/CTS functions.It can thus be seen that introducing the wireless method of the present invention
With device, network throughput can be made to keep preferable level.Similarly, by environmental attenuation 70db, STBC functions are carried in performance
Rise and be with the actual influence in connectedness：STBC is opened, the equivalent signal gain of 3DB can be at least reached.Therefore, open
STBC, can play the effect of raising radio transmission performance in long-distance transmissions.
In terms of comprehensive, by during being wirelessly transferred introduce the present invention, can signal cover, channel capacity with
And the reliability of the aspect raising radio transmission network of transmission quality three, make wireless network reduce packet loss, the bit error rate while,
The utilization rate of bandwidth is effectively ensured, it is to avoid network bandwidth resources wastes.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as using
Design principle of the invention, and the change for carrying out non-creativeness work on this basis and making, all should belong to of the invention
Within protection domain.
Claims (4)
1. wireless device signal transmission method, it is characterised in that comprise the following steps：
（1）Radio reception device carries out 802. 11 link negotiations with wireless client, and sets up connection, starts data message and hands over
Mutually；
（2）Whether the wireless client linking number checked on radio reception device is less than predetermined threshold value, if being less than predetermined threshold value,
Then send beacon frame Beacon simultaneously using at least two antennas, and increase transmit power, conversely, then by single antenna according to
Ordinary power sends beacon frame Beacon；
（3）Check the transmission rate of data message, and according to relation of the transmission rate with 802.11 come adjust STBC functions and
RTS/CTS functions；
（4）Data message transmission, completes information exchange.
2. wireless device signal transmission method according to claim 1, it is characterised in that the step（2）Middle increase hair
Send the mode of power as follows：Default transmit power increases Grad, and power increase is transmitted by the way of being incremented by step by step.
3. wireless device signal transmission method according to claim 2, it is characterised in that the step（3）Middle adjustment
The specific method of STBC functions and RTS/CTS functions is as follows：
If transmission rate belongs to 802.11n standards and MCS8-MCS15, STBC functions are closed, open RTS/CTS functions；
If transmission rate belongs to 802.11n standards and MCS0-MCS7, or 802.11g standards, then STBC functions and RTS/ are opened
CTS functions；
If transmission rate belongs to 802.11b standards, STBC functions are opened, then, then check wireless client linking number,
If wireless client linking number is less than predetermined threshold value, RTS/CTS functions are closed, otherwise, open RTS/CTS functions.
4. wireless device signal transmission method according to claim 3, it is characterised in that also carry out sky using redundant antenna
When encode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410159653.4A CN103997755B (en) | 2014-04-21 | 2014-04-21 | Wireless device signal transmission method and its device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410159653.4A CN103997755B (en) | 2014-04-21 | 2014-04-21 | Wireless device signal transmission method and its device |
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| CN103997755A CN103997755A (en) | 2014-08-20 |
| CN103997755B true CN103997755B (en) | 2017-06-16 |
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Families Citing this family (2)
| 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 |
| CN108990156B (en) * | 2018-06-29 | 2020-04-03 | 努比亚技术有限公司 | Wireless local area network communication method and terminal |
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| CN1599349A (en) * | 2003-08-21 | 2005-03-23 | 英特尔公司 | Method and apparatus to adapt threshold for activating a data frame protection mechanism |
| CN1707964A (en) * | 2004-06-11 | 2005-12-14 | 启碁科技股份有限公司 | Radio communication apparatus for controlling antenna switch according to network data transmission information |
| CN101150343A (en) * | 2006-09-20 | 2008-03-26 | 华为技术有限公司 | A MIMO mobile communication method and system |
| CN101925167A (en) * | 2009-06-09 | 2010-12-22 | 中兴通讯股份有限公司 | Power control method and device of wireless local area network access point device |
| CN102104407A (en) * | 2009-12-22 | 2011-06-22 | 中兴通讯股份有限公司 | Method and system for handing over space time block coding beamforming (STBC+BF) and spatial multiplexing beamforming (SM+BF) |
| CN103269502A (en) * | 2013-04-27 | 2013-08-28 | 杭州华三通信技术有限公司 | Method and device for wireless speed automatic regulation |
-
2014
- 2014-04-21 CN CN201410159653.4A patent/CN103997755B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599349A (en) * | 2003-08-21 | 2005-03-23 | 英特尔公司 | Method and apparatus to adapt threshold for activating a data frame protection mechanism |
| CN1707964A (en) * | 2004-06-11 | 2005-12-14 | 启碁科技股份有限公司 | Radio communication apparatus for controlling antenna switch according to network data transmission information |
| CN101150343A (en) * | 2006-09-20 | 2008-03-26 | 华为技术有限公司 | A MIMO mobile communication method and system |
| CN101925167A (en) * | 2009-06-09 | 2010-12-22 | 中兴通讯股份有限公司 | Power control method and device of wireless local area network access point device |
| CN102104407A (en) * | 2009-12-22 | 2011-06-22 | 中兴通讯股份有限公司 | Method and system for handing over space time block coding beamforming (STBC+BF) and spatial multiplexing beamforming (SM+BF) |
| CN103269502A (en) * | 2013-04-27 | 2013-08-28 | 杭州华三通信技术有限公司 | Method and device for wireless speed automatic regulation |
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Address after: 518000 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation area before Bay Street No. 1 Qianhai road at the Shenzhen Hong Kong Cooperation Area Management Bureau office building A201 room (Qianhai settled in Shenzhen City, Secretary of Commerce Co. Ltd.) Applicant after: SHENZHEN FENGLIAN TECHNOLOGY CO., LTD. Address before: 518000 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation area before Bay Street No. 1 Qianhai road at the Shenzhen Hong Kong Cooperation Area Management Bureau office building A201 room (Qianhai settled in Shenzhen City, Secretary of Commerce Co. Ltd.) Applicant before: Shenzhen Jiu Eryiyun network technology Co., Ltd |
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Granted publication date: 20170616 Termination date: 20200421 |