CN105392162A - Method and device of WiFi power dynamic adjustment and mobile terminal - Google Patents
Method and device of WiFi power dynamic adjustment and mobile terminal Download PDFInfo
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- CN105392162A CN105392162A CN201510718744.1A CN201510718744A CN105392162A CN 105392162 A CN105392162 A CN 105392162A CN 201510718744 A CN201510718744 A CN 201510718744A CN 105392162 A CN105392162 A CN 105392162A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
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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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Abstract
The present invention discloses a method and a device of WiFi transmission power dynamic adjustment and a mobile terminal. The method comprises the following step that when the mobile terminal is set to be a hot spot, and the signal quality received by all equipment connected to the WiFi hot spot is obtained for each interval of a predetermined time; the transmission rate negotiation is carried out according to the signal quality received by the equipment connected to the WiFi hot spot; the transmission power negotiation is carried out for the transmission rate, and the transmission power of an equipment room is adjusted. According to the method, through previously setting a rate and transmission power corresponding table, the power level corresponding to each type of WiFi information transmission power is divided into multiple power levels, in the condition of satisfying a user wireless data transmission performance need, the transmission power is dynamically adjusted to a lower power level, the invention aims to improve efficiency, and thus the advantages of power consumption reduction, service life prolongation and mutual interference source reduction are achieved.
Description
Technical field
The present invention relates to the communication technical field of mobile terminal, particularly a kind of method of WIFI power dynamic conditioning, device and mobile terminal.
Background technology
Along with the development of mobile communication, the progress of science and technology and the raising day by day of people's living standard, the use of various electronic mobile device as mobile phone is more and more universal, and mobile phone has become means of communication indispensable in people's life.
Current WiFi technology extensively adopts in the terminal, people use WIFI to access whenever and wherever possible mobile internet carries out surfing the web is one of the most frequently used function; On the other hand, due to the portability of mobile terminal, its position often changes, and causes user's its received signal strength when using WIFI also can change.
But, in present WIFI agreement 802.11, do not control to limit to power.In other words, the WIFI equipment of existing mobile terminal is all carry out transfer of data with fixing transmitting power (value between 12dBm ~ 20dBm), specifically as shown in table 1, under each WIFI speed, corresponding power is fixing, even in this very large scope of 6M and 54M, power uses same value.
In table 1 prior art, WIFI speed is corresponding with power shows
| RSSI | WIFI standard and modulation system | Speed | Power |
| -80dbm | 802.11b/CCK | 1Mbps | 18dBm |
| -75dbm | 802.11b/CCK | 2Mbps | 18dBm |
| -70dbm | 802.11b/CCK | 5.5Mbps | 18dBm |
| -65dbm | 802.11g/OFDM | 6Mbps | 15dBm |
| -60dmb | 802.11g/OFDM | 9Mbps | 15dBm |
| -55dbm | 802.11b/CCK | 11Mbps | 18dBm |
| -52dbm | 802.11g/OFDM | 12Mbps | 15dBm |
| -50dbm | 802.11g/OFDM | 18Mbps | 15dBm |
| -48dbm | 802.11g/OFDM | 22Mbps | 15dBm |
| -45dbm | 802.11g/OFDM | 24Mbps | 15dBm |
| -42dbm | 802.11g/OFDM | 33Mbps | 15dBm |
| -40dbm | 802.11g/OFDM | 36Mbps | 15dBm |
| -38dbm | 802.11g/OFDM | 48Mbps | 15dBm |
| -35dbm | 802.11g/OFDM | 54Mbps | 15dBm |
Generally speaking, if during distant between terminal and hotspot, need larger transmitting power; Less transmitting power is needed during close together.Transmitting power based on existing mobile terminal WIFI is fixing, does not have related mechanism to regulate the size of transmitting power and to carry out automated power control.If the distance of mobile terminal and hotspot is very near, transmitting power is now relatively large, is equivalent to waste the excess power that there is no need, and adds power consumption.
So WIFI power is operationally all changeless, and be a higher level, to meet the instructions for use of ultimate range, this will bring large, the inefficient shortcoming of power consumption simultaneously.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art and deficiency, a kind of method of WIFI power dynamic conditioning, device and mobile terminal are provided, multiple performance number (such as high, medium and low) is preset to each speed in 802.11 agreements, at the beginning of connecting, by reading the data such as RSSI, error rates of data, judge whether to reduce emitting power grade, judge finally to draw an optimized transmitting power afterwards, in follow-up use, used this power to launch.
According to disclosed embodiment, a first aspect of the present invention proposes a kind of method of WIFI transmission power dynamic conditioning, comprises the following steps:
When mobile terminal is arranged to WIFI hot spot, obtain every a scheduled time signal quality that all devices that is connected to this WIFI hot spot receives;
Carry out transmission rate negotiation according to the signal quality that the described equipment being connected to this WIFI hot spot receives, determine the rate of information throughput of equipment room;
Transmitting power negotiation is carried out, the transmitting power of adjustment equipment room for described transmission rate.
Further, the performance index of described signal quality comprise signal strength signal intensity instruction and the error rates of data of RSSI reception.
Further, the acquisition methods that the signal strength signal intensity that described RSSI receives indicates comprises:
A prorequest explore frame is sent to the device broadcasts being connected to local WIFI hot spot;
Receive the prorespon response frame of described equipment feedback;
The signal strength signal intensity instruction of RSSI reception is obtained according to described prorespon response frame.
Further, described prorequest explore frame comprises frame head, load and postamble, wherein, described frame head and postamble for representing the initial of this prorequest explore frame and ending, and for identifying this prorequest explore frame to be different from the explore frame transmitted between other WIFI hot spot and equipment; Described load is for representing the actual content of described prorequest explore frame.
Further, the signal quality that the equipment being connected to this WIFI hot spot described in described basis receives carries out transmission rate negotiation, determines that the transmission rate of equipment room comprises:
In speed and transmitting power correspondence table, corresponding WIFI signal transmission rate is inquired about according to described RSSI value;
Described WIFI signal transmission rate is exported to WIFI equipment.
Further, the signal quality that the equipment being connected to this WIFI hot spot described in described basis receives carries out transmission rate negotiation, before determining the rate of information throughput of equipment room, also comprises:
Receive and preserve described speed and transmitting power correspondence table, wherein said speed and transmitting power correspondence table comprise the related data of the rate of information throughput of the span of RSSI value and correspondence, WIFI standard and modulation system, also comprise the corresponding relation of the described rate of information throughput and transmitting power, wherein each rate of information throughput several emitting power grades corresponding.
Further, describedly carry out transmitting power negotiation for described transmission rate, the transmitting power of adjustment equipment room comprises:
In speed and transmitting power correspondence table, corresponding transmitting power is inquired about according to described WIFI signal transmission rate;
WIFI signal quality between acquisition equipment;
Detect described WIFI signal quality whether to exceed standard;
If described WIFI signal quality does not exceed standard, reduce the grade of current WIFI transmission power, and go to step the WIFI signal quality between acquisition equipment;
If described WIFI signal quality exceeds standard, promote the grade of current WIFI transmission power and terminate power negotiations.
According to disclosed embodiment, a second aspect of the present invention proposes a kind of device of WIFI transmission power dynamic conditioning, comprises following modules:
Signal quality acquisition module, for when mobile terminal is arranged to WIFI hot spot, obtains every a scheduled time signal quality that all devices that is connected to this WIFI hot spot receives;
Transmission rate negotiation module, the signal quality that the equipment for being connected to this WIFI hot spot described in basis receives carries out transmission rate negotiation, determines the rate of information throughput of equipment room;
Transmitted power negotiation module, for carrying out transmitting power negotiation for described transmission rate, the transmitting power of adjustment equipment room.
Further, the performance index of described signal quality comprise signal strength signal intensity instruction and the error rates of data of RSSI reception.
Further, described signal quality acquisition module comprises:
Explore frame transmitting element, for sending a prorequest explore frame to the device broadcasts being connected to local WIFI hot spot;
Response frame receiving element, for receiving the prorespon response frame of described equipment feedback;
RSCI acquiring unit, for obtaining the signal strength signal intensity instruction that RSSI receives according to described prorespon response frame.
Further, described transmission rate negotiation module comprises:
Transmission rate query unit, for inquiring about corresponding WIFI signal transmission rate according to described RSSI value in speed and transmitting power correspondence table;
Transmission rate output unit, for exporting to WIFI equipment by described WIFI signal transmission rate.
Further, described device also comprises:
Speed and transmitting power correspondence table preset module, for receiving and preserving described speed and transmitting power correspondence table, wherein said speed and transmitting power correspondence table comprise the related data of the rate of information throughput of the span of RSSI value and correspondence, WIFI standard and modulation system, also comprise the corresponding relation of the described rate of information throughput and transmitting power, wherein each rate of information throughput several emitting power grades corresponding.
Further, described transmitted power negotiation module comprises:
Transmitting power query unit, for inquiring about corresponding transmitting power according to described WIFI signal transmission rate in speed and transmitting power correspondence table;
Signal quality acquiring unit, for the WIFI signal quality between acquisition equipment;
Whether signal quality detecting unit, exceed standard for detecting described WIFI signal quality;
First processing unit, if do not exceed standard for described WIFI signal quality, reduces the grade of current WIFI transmission power, and goes to the WIFI signal quality between signal quality acquiring unit acquisition equipment;
Second processing unit, if exceed standard for described WIFI signal quality, promotes the grade of current WIFI transmission power and terminates power negotiations.
According to disclosed embodiment, a third aspect of the present invention discloses a kind of mobile terminal, comprises the device of above-mentioned a kind of WIFI power dynamic conditioning.
The present invention has following advantage and effect relative to prior art:
1) method of a kind of WIFI transmission power dynamic conditioning of the present invention's proposition, when meeting user radio data transmission performance demand, dynamic conditioning transmitting power is to lower level, be intended to raise the efficiency, thus reach reduction power consumption, extend working time, reduce the beneficial effect in source of disturbing mutually.
2) a kind of method of WIFI transmission power dynamic conditioning that proposes of the present invention, overcomes mobile terminal WIFI hot spot in prior art and has that the power consumption that transmitting power height causes is large, high defect of generating heat, provide users with the convenient.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the method flow diagram of a kind of WIFI transmission power dynamic conditioning disclosed in the present embodiment one;
Fig. 2 is the method flow diagram of another WIFI transmission power dynamic conditioning disclosed in the present embodiment one;
Fig. 3 is the process step figure for the look-up table of transmission rate negotiation in the present embodiment one;
Fig. 4 is about the method flow diagram that transmitting power is consulted in the present embodiment one;
Fig. 5 is the method flow diagram of another kind of WIFI transmission power dynamic conditioning disclosed in the present embodiment one;
Fig. 6 is the device composition frame chart of a kind of WIFI transmission power dynamic conditioning disclosed in the present embodiment one;
Fig. 7 is the device composition frame chart of another WIFI transmission power dynamic conditioning disclosed in the present embodiment one;
Fig. 8 is the device composition frame chart of another WIFI transmission power dynamic conditioning disclosed in the present embodiment one;
Fig. 9 is the device composition frame chart of another WIFI transmission power dynamic conditioning disclosed in the present embodiment one;
Figure 10 is the device composition frame chart of another kind of WIFI transmission power dynamic conditioning disclosed in the present embodiment one.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Term " first ", " second ", " the 3rd " and " the 4th " etc. in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing different object, instead of for describing particular order.In addition, term " comprises " and " having " and their any distortion, and intention is to cover not exclusive comprising.Such as contain the process of series of steps or unit, method, system, product or equipment and be not defined in the step or unit listed, but also comprise the step or unit do not listed alternatively, or also comprise alternatively for other intrinsic step of these processes, method, product or equipment or unit.
To be described in detail respectively according to embodiment below.
Embodiment one
Refer to Fig. 1, Fig. 1 is the method step flow chart of a kind of WIFI transmission power dynamic conditioning in the present embodiment one.The method of a kind of WIFI transmission power dynamic conditioning shown in Fig. 1, be applied to intelligent mobile terminal, described intelligent mobile terminal includes but not limited to the terminal equipment of mobile phone, notebook computer, panel computer and palm equipment for surfing the net, multimedia equipment, stream media equipment, mobile internet device (MID, mobileinternetdevice), wearable device or other types.
The mobile terminal that the method is surfed the Net based on WIFI wireless network, WIFI is the technology that the mobile terminals such as PC, handheld device (as PAD, mobile phone) can wirelessly be connected to each other by one, almost current all smart mobile phones, panel computer and notebook computer all support that Wireless Fidelity is surfed the Net, and are to use the widest a kind of wireless network transmission technology now.In fact exactly cable network signal is converted to wireless signal, use wireless router for the related computer supporting its technology, mobile phone, flat board waits reception.If mobile phone has Wireless Fidelity function, just can not be surfed the Net by the network of mobile UNICOM when there being WIFI wireless signal, eliminating traffic fee.Wireless network wireless Internet access is each corner in city, and different according to the standard that wireless network card uses, the speed of WIFI is also different.Wherein IEEE802.11b is up to 11Mbps, and IEEE802.11a is 54Mbps, IEEE802.11g is also 54Mbps (speed can be risen to 108Mbps by NetgearSUPERg technology), IEEE802.11n: reach as high as 150Mbps.
As shown in Figure 1, the method for described a kind of WIFI transmission power dynamic conditioning specifically comprises the following steps:
Step S101, when mobile terminal is arranged to WIFI hot spot, obtain every a scheduled time signal quality that all devices that is connected to this WIFI hot spot receives;
In above-mentioned steps, the indication scheduled time can be set according to transmission performance by engineers and technicians, exemplary, can be taken as 2S; Indication signal quality refers to the signal quality of above-mentioned WIFI hot spot.Described signal quality comprises signal strength signal intensity instruction, error rates of data two performance index of RSSI reception.
Wherein, the signal strength signal intensity instruction that RSSI (ReceivedSignalStrengthIndication) receives, the selective sections of wireless transmission layer, be used for judging link quality, and whether increase broadcast transmission intensity, can also by the distance of the strong and weak measured signal point of the signal that receives and acceptance point.
Error rates of data (BER:biterror) weighs the index of data transfer of data accuracy at the appointed time.The gross yards * 100% of the error code in the error rate=transmission/transmit.If there is error code just to have the error rate.In addition, the frequency error rate being defined as and occurring for weighing error code is also had.Error rates of data is commonly used to the channel transmission quality representing signal.Error rates of data releases signal quality by statistics frame losing number is counter, can be understood as indirect inspection.
The signal strength signal intensity instruction that described RSSI (ReceivedSignalStrengthIndication) receives is recorded by following method:
S1011, WIFI hot spot send a prorequest explore frame to the device broadcasts being connected to local WIFI hot spot;
This step is specially: be set to the mobile terminal of WIFI hot spot to all devices broadcast transmission prorequest explore frame being connected to local WIFI hot spot.
Described prorequest explore frame is made up of specific frame head, load, postamble, described frame head, postamble for representing the initial of this prorequest explore frame and ending, and for identifying this prorequest explore frame to be different from the explore frame transmitted between other WIFI hot spot and equipment; Described load is for representing the actual content of described prorequest explore frame.
Such as represent frame head with FFDE7890, this frame head is four bytes, postamble is represented with FFFF7890, this postamble is four bytes, the frame data that what as long as equipment received is with this frame head and postamble, then this Frame of identification is the specific Frame that WIFI hot spot sends over by equipment, and the actual content of this particular data frame is the load between frame head and postamble; Such as, load comprises the source address of prorequest explore frame and the parameter of needs acquisition etc. content, and load can occupy some bytes, is specifically specified by engineers and technicians.
S1012, receive described equipment feedback prorespon response frame.
This step is specially: the equipment received from the prorequest explore frame of WIFI hot spot can feed back a prorespon response frame, and this frame contains the parameter such as signal strength signal intensity, signal to noise ratio.
S1013, to obtain the signal strength signal intensity instruction that RSSI receives according to described prorespon response frame.
This step is specially: can obtain the signal quality between the described mobile terminal as WIFI hot spot and connection device by transmission prorequest explore frame and reception prorespon response frame, this channel quality Specific amounts turns to the signal strength signal intensity instruction that RSSI receives.
The method flow block diagram comprising the WIFI power dynamic conditioning of above-mentioned sub-step can with reference to shown in accompanying drawing 2.
The signal quality that the equipment being connected to this WIFI hot spot described in step S102, basis receives carries out transmission rate negotiation, determines the rate of information throughput of equipment room;
In another preferred mode, above-mentioned steps S102, according to described in be connected to this WIFI hot spot the signal quality that receives of equipment carry out transmission rate negotiation, the method that described in the transmission rate determining equipment room, transmission rate is consulted is look-up table.
Above-mentioned look-up table indication " table " refers to speed preset in advance and transmitting power correspondence table.
Described speed and transmitting power correspondence table comprise the related data of the rate of information throughput of the span of RSSI value and correspondence, WIFI standard and modulation system.The particular content of speed and transmitting power correspondence table as shown in Table 2 below.
In table 2 the present embodiment, WIFI speed is corresponding with power shows
In upper table, WIFI standard represents the presently used WIFI standard of mobile terminal, and such as 802.11a (54Mbps), 802.11b (11Mbps) or 802.11g (54Mbps), that is to say wireless network protocol.Modulation system is corresponding with WIFI standard, and data are substantially fixing; Terminal can detect the concrete data of modulation system and WIFI standard, and it is prior art, and the present invention is not construed as limiting this.
Can also see from upper table, described speed and transmitting power correspondence table comprise the corresponding relation of the described rate of information throughput and transmitting power, wherein each rate of information throughput several emitting power grades corresponding.
In advance the transmitting power of described WIFI hot spot is carried out classification by low to high grade, the grade of the transmitting power of each rate of information throughput several WIFI hot spot corresponding, its objective is in order to the transmitting power according to unlike signal penetration quality dynamic adjustment WIFI hot spot.
In the present embodiment, three performance number grades (high, medium and low) are preset to each speed in 802.11 agreements, after setting up WIFI and connecting, by reading the data such as RSSI, error rates of data, judge whether to reduce emitting power grade, judge finally to draw an optimized transmitting power afterwards, in follow-up use, used this power to launch.
Described look-up table specifically comprises the following steps, specifically can with reference to shown in accompanying drawing 3:
Step S1021, according to described RSSI value speed and transmitting power correspondence table in inquire about corresponding WIFI signal transmission rate;
Step S1022, described WIFI signal transmission rate is exported to WIFI equipment.
From above-mentioned table 2, as long as know RSSI value, can inquire the size of corresponding WIFI signal transmission rate, WIFI equipment carries out launching according to the WIFI transmission power inquired.Should be understood that, above table only lists the corresponding relation of conventional RSSI value and WIFI signal transmission rate, and remaining corresponding relation supplements perfect by the engineering development personnel of manufacturer in the specific implementation.Above table can also have extended formatting, and the present invention is not restricted this.
Step S103, carry out transmitting power negotiation for described transmission rate, the transmitting power of adjustment equipment room.
In another preferred mode, above-mentioned steps S103, carry out transmitting power negotiation for described transmission rate, the idiographic flow step of the transmitting power of adjustment equipment room can with reference to shown in accompanying drawing 4, specifically comprising of this step 103:
Step S1031, according to described WIFI signal transmission rate speed and transmitting power correspondence table in inquire about corresponding transmitting power.
Select this speed to carry out transfer of data if connect for the first time, then select the transmitting power of transmitting power as WIFI of highest ranking.
WIFI signal quality between step S1032, acquisition equipment.
After selected transmitting power, obtain as the signal quality between the mobile terminal of WIFI hot spot and connection device, be the performance index such as RSSI, error rates of data.
Step S1033, detect described WIFI signal quality and whether exceed standard.
Detect the performance index such as above-mentioned RSSI, error rates of data and whether exceed performance index corresponding to lowest signal qualities under this rate of information throughput, the thought that transmitting power of the present invention is consulted is for each rate of information throughput designs the transmitting power of several grades, from most high transmit power, progressively reduce emitting power grade, until signal quality corresponding to transmitting power exceedes the performance index of signal quality under corresponding informance transmission rate.
If the described WIFI signal quality of step S1034 does not exceed standard, reduce the grade of current WIFI transmission power, and go to step S1032;
The performance index of signal quality under the signal quality under current WIFI transmission power exceedes corresponding informance transmission rate, then show to there is the theoretical space reducing WIFI transmission power in theory, now, according to lower level transmitting power corresponding in speed and transmitting power correspondence table, it can be used as new WIFI transmission power.Meanwhile, go to step S1032, re-start signal quality and detect.
If the described WIFI signal quality of step S1035 exceeds standard, promote the grade of current WIFI transmission power and terminate power negotiations.
If described WIFI signal quality exceeds standard, then illustrate that the transmitting power of lower a grade on the basis of a upper emitting power grade can not meet performance index requirement corresponding to signal quality under the current WIFI rate of information throughput, promote the grade of current WIFI transmission power, namely the transmitting power of a upper grade is recovered, final transmitting power using it as WIFI under present channel quality, and the process terminating that power negotiations completes WIFI power dynamic conditioning.
Further another preferred embodiment in, described step S102, according to described in be connected to this WIFI hot spot the signal quality that receives of equipment carry out transmission rate negotiation, before determining the rate of information throughput of equipment room, also comprise:
Step S100, reception and preserve described speed and transmitting power correspondence table.
Idiographic flow can with reference to shown in accompanying drawing 5, this step is the preparation process of the method for a kind of WIFI power of first Application dynamic conditioning, be equivalent to arrange RSCI, the multiple mapping relation of WIFI signal transmission rate and WIFI transmission power, after only having carried out the arranging of initial multiple mapping relation, a kind of method just can applying WIFI power dynamic conditioning carries out WIFI dynamic power control to mobile terminal, herein, preset RSCI, the multiple mapping relation of WIFI signal transmission rate and WIFI transmission power sets according to the experiment of engineers and technicians and working experience.
In sum, a kind of method of WIFI transmission power dynamic conditioning disclosed in the present embodiment, power grade corresponding for each WIFI rate of information throughput is divided into several power grades (such as high, in, lower Three Estate), when meeting user radio data transmission performance demand, dynamic conditioning transmitting power, to lower level, is intended to raise the efficiency, thus reaches reduction power consumption, extend working time, reduce the beneficial effect in source of disturbing mutually.
Embodiment two
Dynamic conditioning WIFI transmission power after WIFI hot spot function is opened in order to realize mobile terminal, by preset speed and transmitting power correspondence table, power grade corresponding for each WIFI rate of information throughput is divided into several power grades (such as high, in, lower Three Estate), realize when meeting user radio data transmission performance index, dynamic conditioning transmitting power is to the object of lower level, present embodiment discloses a kind of device and mobile terminal of WIFI transmission power dynamic conditioning, the device of this WIFI transmission power dynamic conditioning can be run on each terminal equipment (such as mobile phone, panel computer, palm equipment for surfing the net) in software unit, the unit that hardware cell or software and hardware combine, also can be integrated in described terminal equipment as independently suspension member or run in the application system of described terminal equipment.
Fig. 6 shows the composition structured flowchart of the device of a kind of WIFI transmission power dynamic conditioning that second embodiment of the invention provides, and for convenience of description, illustrate only the part relevant to the embodiment of the present invention.
As shown in Figure 6, the device of WIFI transmission power dynamic conditioning disclosed in the present embodiment two, comprises following modules: signal quality acquisition module 201, transmission rate negotiation module 202 and transmitted power negotiation module 203.
Wherein, signal quality acquisition module 201, for when mobile terminal is arranged to WIFI hot spot, obtains every a scheduled time signal quality that all devices that is connected to this WIFI hot spot receives.
The performance index of described signal quality comprise signal strength signal intensity instruction and the error rates of data of RSSI reception.
The signal strength signal intensity instruction that above-mentioned RSSI (ReceivedSignalStrengthIndication) receives, as the selective sections of wireless transmission layer, be used for judging link quality, and whether increase broadcast transmission intensity, can also by the distance of the strong and weak measured signal point of the signal that receives and acceptance point.
Above-mentioned error rates of data (BER:biterror) weighs the index of data transfer of data accuracy at the appointed time.The gross yards * 100% of the error code in the error rate=transmission/transmit.If there is error code just to have the error rate.In addition, the frequency error rate being defined as and occurring for weighing error code is also had.Error rates of data is commonly used to the channel transmission quality representing signal.Error rates of data releases signal quality by statistics frame losing number is counter, can be understood as indirect inspection.
Another preferred embodiment in, described signal quality acquisition module 201 comprises the following units:
2011, explore frame transmitting element, for sending a prorequest explore frame to the device broadcasts being connected to local WIFI hot spot.
Described prorequest explore frame is made up of specific frame head, load, postamble, described frame head, postamble for representing the initial of this prorequest explore frame and ending, and for identifying this prorequest explore frame to be different from the explore frame transmitted between other WIFI hot spot and equipment; Described load is for representing the actual content of described prorequest explore frame.
2012, response frame receiving element, for receiving the prorespon response frame of described equipment feedback.
2013, RSCI acquiring unit, for obtaining the signal strength signal intensity instruction that RSSI receives according to described prorespon response frame.
The device composition frame chart comprising the WIFI power dynamic conditioning of said units can with reference to shown in accompanying drawing 7.
Wherein, transmission rate negotiation module 202, the signal quality that the equipment for being connected to this WIFI hot spot described in basis receives carries out transmission rate negotiation, determines the rate of information throughput of equipment room.
Described transmission rate negotiation module specifically comprises the following units:
Transmission rate query unit 2021, for inquiring about corresponding WIFI signal transmission rate according to described RSSI value in speed and transmitting power correspondence table.
Described speed and transmitting power correspondence table comprise the related data of the rate of information throughput of the span of RSSI value and correspondence, WIFI standard and modulation system.Shown in the table 2 as a kind of in embodiment of particular content of speed and transmitting power correspondence table.
Can also see from upper table, described speed and transmitting power correspondence table comprise the corresponding relation of the described rate of information throughput and transmitting power, wherein each rate of information throughput several emitting power grades corresponding.
In the present embodiment, three performance number grades (high, medium and low) are preset to each speed in 802.11 agreements, after setting up WIFI and connecting, by reading the data such as RSSI, error rates of data, judge whether to reduce emitting power grade, judge finally to draw an optimized transmitting power afterwards, in follow-up use, used this power to launch.
Transmission rate output unit 2022, for exporting to WIFI equipment by described WIFI signal transmission rate.
The device composition frame chart comprising the WIFI power dynamic conditioning of said units can with reference to shown in accompanying drawing 8.
Wherein, transmitted power negotiation module 203, for carrying out transmitting power negotiation for described transmission rate, the transmitting power of adjustment equipment room.
Described transmitted power negotiation module comprises the following units:
Transmitting power query unit 2031, for inquiring about corresponding transmitting power according to described WIFI signal transmission rate in speed and transmitting power correspondence table;
Signal quality acquiring unit 2032, for the WIFI signal quality between acquisition equipment;
Whether signal quality detecting unit 2033, exceed standard for detecting described WIFI signal quality;
First processing unit 2034, if do not exceed standard for described WIFI signal quality, reduces the grade of current WIFI transmission power, and goes to the WIFI signal quality between signal quality acquiring unit acquisition equipment;
Second processing unit 2035, if exceed standard for described WIFI signal quality, promotes the grade of current WIFI transmission power and terminates power negotiations.
The device composition frame chart comprising the WIFI power dynamic conditioning of said units can with reference to shown in accompanying drawing 9.
Another preferred embodiment in, the device of described a kind of WIFI transmission power dynamic conditioning, also comprise: speed and transmitting power correspondence table preset module 200, the device composition frame chart specifically comprising this speed and transmitted power correspondence table preset module can refer to shown in accompanying drawing 10.
Described speed and transmitting power correspondence table preset module 200, for receiving and preserving described speed and transmitting power correspondence table, wherein said speed and transmitting power correspondence table comprise the related data of the rate of information throughput of the span of RSSI value and correspondence, WIFI standard and modulation system, also comprise the corresponding relation of the described rate of information throughput and transmitting power, wherein each rate of information throughput several emitting power grades corresponding.
The embodiment of the present invention also provides a kind of mobile terminal, specifically comprises the device of a kind of WIFI power dynamic conditioning as shown in Fig. 6 to Figure 10.
Based on same inventive concept, the device of a kind of WIFI power dynamic conditioning that the embodiment of the present invention provides and mobile terminal, similar to the method for aforementioned a kind of WIFI power dynamic conditioning in the principle of dealing with problems, therefore the enforcement of this device and mobile terminal can see the enforcement of preceding method, the module of foregoing description and the specific works process of unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In sum, the device of a kind of WIFI power dynamic conditioning disclosed in the embodiment of the present invention two and mobile terminal, the modules of this device, unit matching works, by prior preset speed and transmitting power correspondence table, power grade corresponding for each WIFI rate of information throughput is divided into several power grades (such as high, in, lower Three Estate), when meeting user radio data transmission performance demand, dynamic conditioning transmitting power is to lower level, be intended to raise the efficiency, thus reach reduction power consumption, extend working time, reduce the beneficial effect in source of disturbing mutually, this device and mobile terminal equipped therewith also overcome mobile terminal WIFI hot spot in prior art to there is the power consumption that causes of transmitting power height large simultaneously, to generate heat high defect, experience for user improves application.
It should be noted that in said apparatus or terminal embodiment, included modules and unit are carry out dividing according to function logic, but are not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each module and unit, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
In several embodiments that the application provides, should be understood that disclosed equipment and method can realize by another way.Such as, terminal embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of module or unit or communication connection can be electrical, machinery or other form.
In addition, each functional module in each embodiment of the present invention or unit can be integrated in a processing module or unit, also can be that the independent physics of modules or unit exists, also can two or more modules or unit be integrated in a module or unit.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (14)
1. a method for WIFI transmission power dynamic conditioning, is characterized in that, comprises the following steps:
When mobile terminal is arranged to WIFI hot spot, obtain every a scheduled time signal quality that all devices that is connected to this WIFI hot spot receives;
Carry out transmission rate negotiation according to the signal quality that the described equipment being connected to this WIFI hot spot receives, determine the rate of information throughput of equipment room;
Transmitting power negotiation is carried out, the transmitting power of adjustment equipment room for described transmission rate.
2. the method for a kind of WIFI transmission power dynamic conditioning according to claim 1, is characterized in that, the performance index of described signal quality comprise signal strength signal intensity instruction and the error rates of data of RSSI reception.
3. the method for a kind of WIFI transmission power dynamic conditioning according to claim 2, is characterized in that, the acquisition methods of the signal strength signal intensity instruction that described RSSI receives comprises:
A prorequest explore frame is sent to the device broadcasts being connected to local WIFI hot spot;
Receive the prorespon response frame of described equipment feedback;
The signal strength signal intensity instruction of RSSI reception is obtained according to described prorespon response frame.
4. the method for a kind of WIFI transmission power dynamic conditioning according to claim 3, it is characterized in that, described prorequest explore frame comprises frame head, load and postamble, wherein, described frame head and postamble for representing the initial of this prorequest explore frame and ending, and for identifying this prorequest explore frame to be different from the explore frame transmitted between other WIFI hot spot and equipment; Described load is for representing the actual content of described prorequest explore frame.
5. the method for a kind of WIFI transmission power dynamic conditioning according to claim 2, it is characterized in that, the signal quality that the equipment being connected to this WIFI hot spot described in described basis receives carries out transmission rate negotiation, determines that the transmission rate of equipment room comprises:
In speed and transmitting power correspondence table, corresponding WIFI signal transmission rate is inquired about according to described RSSI value;
Described WIFI signal transmission rate is exported to WIFI equipment.
6. the method for a kind of WIFI transmission power dynamic conditioning according to claim 5, it is characterized in that, the signal quality that the equipment being connected to this WIFI hot spot described in described basis receives carries out transmission rate negotiation, before determining the rate of information throughput of equipment room, also comprises:
Receive and preserve described speed and transmitting power correspondence table, wherein said speed and transmitting power correspondence table comprise the related data of the rate of information throughput of the span of RSSI value and correspondence, WIFI standard and modulation system, also comprise the corresponding relation of the described rate of information throughput and transmitting power, wherein each rate of information throughput several emitting power grades corresponding.
7. the method for a kind of WIFI transmission power dynamic conditioning according to claim 1, is characterized in that, describedly carries out transmitting power negotiation for described transmission rate, and the transmitting power of adjustment equipment room comprises:
In speed and transmitting power correspondence table, corresponding transmitting power is inquired about according to described WIFI signal transmission rate;
WIFI signal quality between acquisition equipment;
Detect described WIFI signal quality whether to exceed standard;
If described WIFI signal quality does not exceed standard, reduce the grade of current WIFI transmission power, and go to step the WIFI signal quality between acquisition equipment;
If described WIFI signal quality exceeds standard, promote the grade of current WIFI transmission power and terminate power negotiations.
8. a device for WIFI transmission power dynamic conditioning, is characterized in that, comprises following modules:
Signal quality acquisition module, for when mobile terminal is arranged to WIFI hot spot, obtains every a scheduled time signal quality that all devices that is connected to this WIFI hot spot receives;
Transmission rate negotiation module, the signal quality that the equipment for being connected to this WIFI hot spot described in basis receives carries out transmission rate negotiation, determines the rate of information throughput of equipment room;
Transmitted power negotiation module, for carrying out transmitting power negotiation for described transmission rate, the transmitting power of adjustment equipment room.
9. the device of a kind of WIFI transmission power dynamic conditioning according to claim 8, is characterized in that, the performance index of described signal quality comprise signal strength signal intensity instruction and the error rates of data of RSSI reception.
10. the device of a kind of WIFI transmission power dynamic conditioning according to claim 9, is characterized in that, described signal quality acquisition module comprises:
Explore frame transmitting element, for sending a prorequest explore frame to the device broadcasts being connected to local WIFI hot spot;
Response frame receiving element, for receiving the prorespon response frame of described equipment feedback;
RSCI acquiring unit, for obtaining the signal strength signal intensity instruction that RSSI receives according to described prorespon response frame.
The device of 11. a kind of WIFI transmission power dynamic conditioning according to claim 9, it is characterized in that, described transmission rate negotiation module comprises:
Transmission rate query unit, for inquiring about corresponding WIFI signal transmission rate according to described RSSI value in speed and transmitting power correspondence table;
Transmission rate output unit, for exporting to WIFI equipment by described WIFI signal transmission rate.
The device of 12. a kind of WIFI transmission power dynamic conditioning according to claim 11, it is characterized in that, described device also comprises:
Speed and transmitting power correspondence table preset module, for receiving and preserving described speed and transmitting power correspondence table, wherein said speed and transmitting power correspondence table comprise the related data of the rate of information throughput of the span of RSSI value and correspondence, WIFI standard and modulation system, also comprise the corresponding relation of the described rate of information throughput and transmitting power, wherein each rate of information throughput several emitting power grades corresponding.
The device of 13. a kind of WIFI transmission power dynamic conditioning according to claim 8, it is characterized in that, described transmitted power negotiation module comprises:
Transmitting power query unit, for inquiring about corresponding transmitting power according to described WIFI signal transmission rate in speed and transmitting power correspondence table;
Signal quality acquiring unit, for the WIFI signal quality between acquisition equipment;
Whether signal quality detecting unit, exceed standard for detecting described WIFI signal quality;
First processing unit, if do not exceed standard for described WIFI signal quality, reduces the grade of current WIFI transmission power, and goes to the WIFI signal quality between signal quality acquiring unit acquisition equipment;
Second processing unit, if exceed standard for described WIFI signal quality, promotes the grade of current WIFI transmission power and terminates power negotiations.
14. 1 kinds of mobile terminals, is characterized in that, comprise the device of the arbitrary described a kind of WIFI power dynamic conditioning of claim 8 to 13.
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