CN104936215A - Method and system for adjusting Wi-Fi (Wireless Fidelity) dynamic rate - Google Patents
Method and system for adjusting Wi-Fi (Wireless Fidelity) dynamic rate Download PDFInfo
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- CN104936215A CN104936215A CN201510336979.4A CN201510336979A CN104936215A CN 104936215 A CN104936215 A CN 104936215A CN 201510336979 A CN201510336979 A CN 201510336979A CN 104936215 A CN104936215 A CN 104936215A
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- wireless
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- receiving terminal
- transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method and system for adjusting the Wi-Fi (Wireless Fidelity) dynamic rate. The method comprises the following steps: presetting a data packet quantity threshold, and detecting the quantity of data packets transmitted by the transmitting end of Wi-Fi in a current period; if the quantity of the data packets transmitted in the current period is smaller than the data packet quantity threshold, acquiring the signal-to-noise ratio of the receiving end of the Wi-Fi, and adjusting the transmission rate of the data packets; and if the quantity of the data packets transmitted in the current period is greater than or equal to the data packet quantity threshold, acquiring the packet loss rate of the receiving g end of the Wi-Fi, and adjusting the transmission rate of the data packets. The system is characterized in that a detection module and an adjusting module are connected to the transmitting end of the Wi-Fi; and the receiving end of the Wi-Fi is connected with an acquisition module. The system is reasonable in structure; data can be processed rapidly and conveniently; and the communication quality of the Wi-Fi can be enhanced.
Description
Technical field
The present invention relates to wireless network transmission technology field, particularly one wireless Wi-Fi dynamic rate shaping method and system.
Background technology
Wireless Wi-Fi relies on the advantages such as its speed is high, price is low to be more and more widely applied in network.Such as, but the communication quality of wireless Wi-Fi is larger by the impact of external environment condition, and extraneous interference signal, the stop of barrier, client is kept in motion.Therefore, the transmission performance that communication quality just can give full play to wireless Wi-Fi is improved to the transmission rate adjustment of wireless Wi-Fi.
Only transmit the occasion of message in POS etc., the quantity of the packet of each transmission is fewer, although only lose a packet, packet loss also can maintain in very high level, causes message transmission rate low.Therefore simple packet loss data obviously can not reflect actual signal intelligence, if now go to adjust transmission rate according to packet loss, possibly because speed adjustment error causes Communication.
Publication number is file transmitting method and the device that the patent of invention of CN104104481A discloses a kind of WLAN (wireless local area network), disclose and can determine transmission rate according to the signal strength signal intensity of receiving terminal and/or packet loss, concrete steps are: S202: the signal strength signal intensity periodically obtaining described receiving terminal; S204: the adjustable range determining described transmission rate according to the signal strength signal intensity of the described receiving terminal periodically obtained; S206: periodically the packet loss sending message is added up; S208: determine described transmission rate according to adding up the packet loss obtained in described adjusting range.Namely, jointly initial transmission rate is determined according to the signal strength signal intensity of receiving terminal and packet loss, by periodically detecting the signal strength signal intensity of receiving terminal, determine the adjustable range of transmission rate, simultaneously the periodic packet loss information to transmission frame is added up, and then fine setting transmission rate, and finally seek a best poised state therebetween in transmission rate and packet loss.Although jointly adjust transmission rate according to the signal strength signal intensity of receiving terminal and packet loss, but all first by the signal strength signal intensity of receiving terminal, transmission rate is adjusted for the transmission of each packet, then according to packet loss fine setting transmission rate, the signal strength signal intensity of receiving terminal can not reflect the impact of the environmental factors such as interference signal, data handling procedure is complicated and unreasonable, in addition, for the occasion that data packet number is few, communication quality is caused to decline possibly according to packet loss fine setting.
Summary of the invention
Technical problem to be solved by this invention is: the wireless Wi-Fi dynamic rate shaping method and system providing a kind of good communication quality.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of wireless Wi-Fi dynamic rate shaping method, described method is:
Preset data bag quantity threshold values, the data packet number that the transmitting terminal detecting wireless Wi-Fi in current period sends;
If the data packet number sent in current period is less than data packet number threshold values, then gathers the signal to noise ratio of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet;
If the data packet number sent in current period is more than or equal to data packet number threshold values, then gathers the packet loss of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet.
Beneficial effect of the present invention is: when the packet that the transmitting terminal of wireless Wi-Fi sends is less, according to the transmission rate of the signal to noise ratio adjustment packet of the receiving terminal of wireless Wi-Fi, when the packet that the transmitting terminal of wireless Wi-Fi sends is more, according to the transmission rate of the packet loss adjustment packet of the receiving terminal of wireless Wi-Fi, signal to noise ratio can reflect the environment interference situation of receiving terminal, signal to noise ratio adjustment transmission rate is adopted when data packet number is less, the transmission rate mistuning that packet loss can be avoided to cause too is greatly whole, improves the communication quality of wireless Wi-Fi.
A kind of wireless Wi-Fi dynamic rate shaping system, comprising:
Transmitting terminal, for sending packet;
Receiving terminal, for receiving packet;
Detection module, the data packet number that the transmitting terminal for detecting wireless Wi-Fi in current period sends;
Acquisition module, for gathering signal to noise ratio and the packet loss of the receiving terminal of wireless Wi-Fi;
Adjusting module, for adjusting the transmission rate of packet.
Beneficial effect of the present invention is: send packet by transmitting terminal, packet is received by receiving terminal, the data packet number that will send is detected by detection module, signal to noise ratio and the packet loss of receiving terminal is gathered by acquisition module, transmission rate is adjusted by adjusting module, system configuration is reasonable, can realize the detection and control in wireless Wi-Fi data input and data output process.
Accompanying drawing explanation
Fig. 1 is the flow chart of wireless Wi-Fi dynamic rate shaping method of the present invention;
Fig. 2 is the structural representation of wireless Wi-Fi dynamic rate shaping system of the present invention.
Embodiment
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with execution mode.
The design of most critical of the present invention is: adjust transmission rate according to signal to noise ratio during the negligible amounts of the packet that the transmitting terminal of wireless Wi-Fi sends, transmission rate is adjusted according to packet loss when data packet number is larger, data packet number is detected at the transmitting terminal of wireless Wi-Fi, signal to noise ratio or packet loss is gathered at the receiving terminal of wireless Wi-Fi, consider the environment interference situation of the receiving terminal of wireless Wi-Fi to adjust transmission rate, data processing is reasonable, and system configuration is reasonable.
The explanation of technical terms that the present invention relates to is in table 1:
Table 1
technical term | explain |
packet loss | refer to that in test, institute's lost data packets quantity accounts for the ratio of sent data bulk. |
signal to noise ratio | refer to the ratio of signal and noise in an electronic equipment or electronic system. |
The specific embodiment of the present invention is:
Refer to Fig. 1, a kind of wireless Wi-Fi dynamic rate shaping method, described method is:
Preset data bag quantity threshold values, the data packet number that the transmitting terminal detecting wireless Wi-Fi in current period sends;
If the data packet number sent in current period is less than data packet number threshold values, then gathers the signal to noise ratio of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet;
If the data packet number sent in current period is more than or equal to data packet number threshold values, then gathers the packet loss of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet.
From foregoing description, beneficial effect of the present invention is: when the packet that the transmitting terminal of wireless Wi-Fi sends is less, according to the transmission rate of the signal to noise ratio adjustment packet of the receiving terminal of wireless Wi-Fi, when the packet that the transmitting terminal of wireless Wi-Fi sends is more, according to the transmission rate of the packet loss adjustment packet of the receiving terminal of wireless Wi-Fi, signal to noise ratio can reflect the environment interference situation of receiving terminal, signal to noise ratio adjustment transmission rate is adopted when data packet number is less, the transmission rate mistuning that packet loss can be avoided to cause too is greatly whole, improve the communication quality of wireless Wi-Fi.
Further, gather the signal to noise ratio of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet, being specially:
Preset maximum signal to noise ratio threshold values, gather the signal to noise ratio of the receiving terminal of wireless Wi-Fi;
The transmission rate of packet is adjusted according to the signal to noise ratio of the receiving terminal of the wireless Wi-Fi collected and maximum signal to noise ratio threshold values.
Seen from the above description, the transmission rate adjusting packet according to the signal to noise ratio of the receiving terminal of wireless Wi-Fi, using the maximum signal to noise ratio threshold values of receiving terminal as with reference to data, ensures reasonability and the validity of transmission rate adjustment.
Further, maximum signal to noise ratio threshold values is the signal to noise ratio of receiving terminal under noiseless environment of wireless Wi-Fi.
Seen from the above description, maximum signal to noise ratio threshold values is the rationality communications status of receiving terminal without environmental interference of wireless Wi-Fi, in this, as reference, can ensure the reasonability that transmission rate adjusts and validity.
Further, gather the packet loss of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet, being specially:
Preset minimum packet loss threshold values, maximum packet loss threshold values and current transmission rate, gather the packet loss of the receiving terminal of wireless Wi-Fi;
In some cycles, if the packet loss of the receiving terminal of wireless Wi-Fi is less than minimum packet loss threshold values, then increase current transmission rate; If the packet loss of the receiving terminal of wireless Wi-Fi is greater than maximum packet loss threshold values, then reduce current transmission rate.
Seen from the above description, by the boundary line that minimum packet loss threshold values improves as current transmission rate, by the boundary line that maximum packet loss threshold values reduces as current transmission rate, if packet loss is between minimum packet loss threshold values and maximum packet loss threshold values, then current transmission rate is constant, ensures reasonability and the validity of transmission rate adjustment.
Further, described minimum packet loss threshold values Per
minnumber range be: 2% ~ 8%, described maximum packet loss threshold values Per
maxnumber range be: 15% ~ 30%.
Seen from the above description, the data packet number that the transaction message due to POS sends at every turn is less, if minimum packet loss threshold values arranges too low, then transmission rate adjustment can be too frequent, if maximum packet loss threshold values arranges too high, then can affect the validity of transaction message, affect Consumer's Experience.
Please refer to Fig. 1, embodiments of the invention one are:
A kind of wireless Wi-Fi dynamic rate shaping method, described method is:
Preset one and comprise N number of transmission rate R arranged from small to large successively
idxspeedometer Drive, wherein i=1,2 ..., N, described Speedometer Drive be 1,2,5.5,6,6.5,13,19.5,26,39,52,58.5,65}, unit is Mbps, then N is 12;
Preset data bag quantity threshold values is 20, the data packet number that the transmitting terminal detecting wireless Wi-Fi in current period sends;
If the data packet number sent in current period is less than data packet number threshold values, then gathers the signal to noise ratio of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet, being specially:
Presetting maximum signal to noise ratio threshold values is SNR
max, maximum signal to noise ratio threshold values is SNR
maxget when transmission frequency is 2.4GHz under noiseless environment, the signal to noise ratio during distance 1m of receiving terminal and wireless aps, now signal power is-25dB, and noise power is-100dB, then maximum signal to noise ratio threshold values is SNR
maxequaling signal power, to deduct noise power be 75dB;
The signal to noise ratio gathering the receiving terminal of wireless Wi-Fi is SNR, and the transmission rate of adjustment packet, is specially:
Be SNR and maximum signal to noise ratio threshold values SNR according to the signal to noise ratio of the receiving terminal of the wireless Wi-Fi collected
maxinteger n is obtained by following formulae discovery:
n=N×(SNR÷SNR
max);
If wherein n<1, then get n=1; If n>N, then get n=N;
In selection Speedometer Drive, the n-th transmission rate is as the transmission rate R of packet
ndx;
If the data packet number sent in current period is greater than data packet number threshold values, then gathers the packet loss of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet, being specially:
Preset minimum packet loss threshold values Per
minbe 2%, maximum packet loss threshold values Per
maxbe 15% and current transmission rate R
ndxfor 26Mbps;
Gather the packet loss Per of the receiving terminal of wireless Wi-Fi, the transmission rate of adjustment packet, is specially:
In some cycles, if Per<Per
min, then transmission rate R is adjusted
ndx, get n=n+1, i.e. R
ndxfor 39Mbps; If Per>Per
max, then transmission rate R is adjusted
ndx, get n=n-1, i.e. R
ndxfor 19.5Mbps;
The R after adjustment
ndxas the transmission rate of packet.
Refer to Fig. 2, a kind of wireless Wi-Fi dynamic rate shaping system, comprising:
Transmitting terminal, for sending packet;
Receiving terminal, for receiving packet;
Detection module, the data packet number that the transmitting terminal for detecting wireless Wi-Fi in current period sends;
Acquisition module, for gathering signal to noise ratio and the packet loss of the receiving terminal of wireless Wi-Fi;
Adjusting module, for adjusting the transmission rate of packet.
From foregoing description, beneficial effect of the present invention is: send packet by transmitting terminal, packet is received by receiving terminal, the data packet number that will send is detected by detection module, signal to noise ratio and the packet loss of receiving terminal is gathered by acquisition module, adjust transmission rate by adjusting module, system configuration is reasonable, can realize the detection and control in wireless Wi-Fi data input and data output process.
Further, described detection module is connected with transmitting terminal with adjusting module, and described acquisition module is connected with receiving terminal.
Seen from the above description, detection module and adjusting module are mainly used in transmitting terminal, and acquisition module is mainly used in receiving terminal, and system configuration is reasonable, and deal with data is fast convenient.
Please refer to Fig. 2, embodiments of the invention two are:
A kind of wireless Wi-Fi dynamic rate shaping system, comprising:
Transmitting terminal, for sending packet;
Receiving terminal, for receiving packet;
Detection module, the data packet number that the transmitting terminal for detecting wireless Wi-Fi in current period sends;
Acquisition module, for gathering signal to noise ratio and the packet loss of the receiving terminal of wireless Wi-Fi;
Adjusting module, for adjusting the transmission rate of packet;
Wherein, described detection module is connected with transmitting terminal with adjusting module, and described acquisition module is connected with receiving terminal.
In sum, wireless Wi-Fi dynamic rate shaping method and system provided by the invention, when the packet that the transmitting terminal of wireless Wi-Fi sends is less, according to the transmission rate of the signal to noise ratio adjustment packet of the receiving terminal of wireless Wi-Fi, when the packet that the transmitting terminal of wireless Wi-Fi sends is more, according to the transmission rate of the packet loss adjustment packet of the receiving terminal of wireless Wi-Fi, packet loss can reflect the actual conditions of receiving terminal transfer of data, when data packet number is less, even lose a numeral, packet loss all can be very large, signal to noise ratio can reflect the environment interference situation of receiving terminal, the mode adopting signal to noise ratio and packet loss to combine adjusts transmission rate, the data packet number sent is detected at the transmitting terminal of wireless Wi-Fi, and adjust transmission rate, signal to noise ratio and packet loss is gathered at the receiving terminal of wireless Wi-Fi, system configuration is reasonable, data processing rapid and convenient, the communication quality of wireless Wi-Fi can be improved.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing specification of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (7)
1. a wireless Wi-Fi dynamic rate shaping method, it is characterized in that, described method is:
Preset data bag quantity threshold values, the data packet number that the transmitting terminal detecting wireless Wi-Fi in current period sends;
If the data packet number sent in current period is less than data packet number threshold values, then gathers the signal to noise ratio of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet;
If the data packet number sent in current period is more than or equal to data packet number threshold values, then gathers the packet loss of the receiving terminal of wireless Wi-Fi and adjust the transmission rate of packet.
2. wireless Wi-Fi dynamic rate shaping method according to claim 1, is characterized in that, gathers the signal to noise ratio of the receiving terminal of wireless Wi-Fi and adjusts the transmission rate of packet, being specially:
Preset maximum signal to noise ratio threshold values, gather the signal to noise ratio of the receiving terminal of wireless Wi-Fi;
The transmission rate of packet is adjusted according to the signal to noise ratio of the receiving terminal of the wireless Wi-Fi collected and maximum signal to noise ratio threshold values.
3. wireless Wi-Fi dynamic rate shaping method according to claim 2, is characterized in that, maximum signal to noise ratio threshold values is the signal to noise ratio of receiving terminal under noiseless environment of wireless Wi-Fi.
4. wireless Wi-Fi dynamic rate shaping method according to claim 1, is characterized in that, gathers the packet loss of the receiving terminal of wireless Wi-Fi and adjusts the transmission rate of packet, being specially:
Preset minimum packet loss threshold values, maximum packet loss threshold values and current transmission rate, gather the packet loss of the receiving terminal of wireless Wi-Fi;
In some cycles, if the packet loss of the receiving terminal of wireless Wi-Fi is less than minimum packet loss threshold values, then increase current transmission rate; If the packet loss of the receiving terminal of wireless Wi-Fi is greater than maximum packet loss threshold values, then reduce current transmission rate.
5. wireless Wi-Fi dynamic rate shaping method according to claim 4, is characterized in that, described minimum packet loss threshold values Per
minnumber range be: 2% ~ 8%, described maximum packet loss threshold values Per
maxnumber range be: 15% ~ 30%.
6. a wireless Wi-Fi dynamic rate shaping system, is characterized in that, comprising:
Transmitting terminal, for sending packet;
Receiving terminal, for receiving packet;
Detection module, the data packet number that the transmitting terminal for detecting wireless Wi-Fi in current period sends;
Acquisition module, for gathering signal to noise ratio and the packet loss of the receiving terminal of wireless Wi-Fi;
Adjusting module, for adjusting the transmission rate of packet.
7. wireless Wi-Fi dynamic rate shaping system according to claim 6, it is characterized in that, described detection module is connected with transmitting terminal with adjusting module, and described acquisition module is connected with receiving terminal.
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