CN103096351A - Wireless fidelity (Wi-Fi) parameter confirmation method and device and signal transmission method and system - Google Patents
Wireless fidelity (Wi-Fi) parameter confirmation method and device and signal transmission method and system Download PDFInfo
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Abstract
The invention embodiment provides a Wi-Fi parameter confirmation method and a device. The Wi-Fi parameter confirmation method and the device are used for adopting orthogonal channels in propagation medium of the medium radio frequency leakage principle to successively ascertain the threshold launching power of each orthogonal channel and enable signals which are received from the adjacent channels of current channels to satisfy preset conditions when the signals are launched by the current channels by the threshold launching power; successively confirming carrier monitor thresholds of other channels using respective launching power to launch signals of each orthogonal channel, due to the fact that the confirming principle of the threshold launching power of each channel is not to affect signal receiving quality in the adjacent channels, the confirming principle of each channel is more than the sum of the interference power of other channels, therefore, enabling the transmission mediums which adopt the same medium radio frequency principle to exist the orthogonal channels, and therefore required cost can be effectively lowered when multipath signals are transmitted.
Description
Technical field
The present invention relates to the communications field, relate in particular to Wi-Fi parameter determination method and device, method for transmitting signals and system.
Background technology
Along with the development of track traffic, the amount of information that track train need to be mutual with ground increases day by day, and at present, track train and ground adopt the Wi-Fi mode to communicate.In order to guarantee the transmission quality of signal, usually select waveguide as communication medium.Due to the characteristic of waveguide cavity, the decay of signal in waveguide cavity is very little, therefore, even use orthogonal channel, because the decay of signal is very little, so the secondary lobe leakage power of signal can produce serious monkey chatter, visible, same waveguide also can't be transmitted multiple signals, so, face the situation that amount of information that track train need to be mutual with ground increases day by day, transmit multiple signals, just need to use many waveguides, thereby cause the increase of cost.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of Wi-Fi parameter determination method and device, method for transmitting signals and device, and purpose is to solve the problem that a waveguide can't be transmitted multiple signals simultaneously.
To achieve these goals, the embodiment of the present invention provides following technical scheme:
A kind of Wi-Fi parameter determination method, be applied to adopt the medium radio frequency to reveal the propagation medium of principle, and described propagation medium comprises N orthogonal channel, and wherein, described N is integer, and N >=2, and described method comprises:
Determine successively the thresholding transmitting power P when transmitting in channel n
n, making while transmitting to channel n with described thresholding transmitting power, the quality of the signal received from the channel adjacent with described channel n meets default condition;
Determine successively with thresholding transmitting power separately when transmitting in other channel the carrier sense thresholding Q of channel n
n, make the carrier sense thresholding of described channel n be greater than the interference power sum of described other channel, wherein, described n=1,2 ... N.
Preferably, describedly determine that successively the thresholding transmitting power when transmitting in channel n comprises:
Successively each channel is carried out to following steps, until travel through a described N channel:
With the power of presetting, in channel i, transmit;
Receive the signal on the channel adjacent with described channel i;
When the quality of the signal on the channel adjacent with described channel i received does not meet default condition, adjustment is to the transmitting power transmitted in described channel i, until the quality of the signal on the described channel adjacent with described channel i that receive meets default condition;
Transmitting power when the quality of the signal on the described channel adjacent with described channel i that receive meets default condition deducts the result of the first default performance number as the thresholding transmitting power transmitted to channel i, wherein, described i is integer, and i≤N.
Preferably, describedly determine successively that with thresholding transmitting power separately the carrier sense thresholding of channel n comprises when transmitting in other channel:
Successively each channel is carried out to following steps, until travel through a described N channel:
Detect when the thresholding transmitting power with separately when transmitting in other channel the signal power received in channel i;
The power of the signal that receives in described channel i is added to the carrier sense thresholding of the result of the second default performance number as described channel i.
Preferably, described default condition comprises:
The packet loss of signal is less than default value.
A kind of method for transmitting signals comprises:
With the thresholding transmitting power P preset
nin the channel n of the propagation medium that adopts medium radio frequency leakage principle, transmit, described default thresholding transmitting power P
nfor the quality that makes the signal received on the channel adjacent with described channel n meets the transmitting power of default condition, to the signal in orthogonal of launching in a described N channel;
With the carrier sense thresholding Q preset
nreceive the signal of described channel n, described default carrier sense thresholding Q
nbe greater than with thresholding transmitting power separately when transmitting in other channel, the interference power sum of described other channel, wherein, described n=1,2 ... N, described N is integer, and N>=2.
6, method according to claim 5, is characterized in that, the described thresholding transmitting power P to preset
nto transmitting in described channel n, comprise:
Use mixer that described signal is closed to road;
Use coaxial converter that the input signal of described mixer is imported in described propagation medium.
A kind of Wi-Fi parameter is determined device, is applied to adopt the medium radio frequency to reveal the propagation medium of principle, and described propagation medium comprises N orthogonal channel, and wherein, described N is integer, and N >=2, and described device comprises:
Thresholding transmitting power determination module, the thresholding transmitting power P while transmitting to channel n for determining successively
n, making while transmitting to channel n with described thresholding transmitting power, the quality of the signal received from the channel adjacent with described channel n meets default condition;
Carrier sense thresholding determination module, while transmitting to other channel with thresholding transmitting power separately for determining successively, the carrier sense thresholding Q of channel n
n, make the carrier sense thresholding of described channel n be greater than the interference power sum of described other channel, wherein, described n=1,2 ... N.
Preferably, described thresholding transmitting power determination module comprises:
The first loop control module, for successively each channel being carried out to following steps, until travel through a described N channel:
Transmitter unit, transmit to channel i for the power to preset;
Receiving element, for receiving the signal on the channel adjacent with described channel i;
Adjustment unit, while for the quality of signal on the channel adjacent with described channel i received, not meeting default condition, adjustment is to the transmitting power transmitted in described channel i, until the quality of the signal on the described channel adjacent with described channel i that receive meets default condition;
The first computing unit, transmitting power while for the quality of the signal using on the described channel adjacent with described channel i that receive, meeting default condition deducts the result of the first default performance number as the thresholding transmitting power transmitted to channel i, wherein, described i is integer, and i≤N.
Preferably, described carrier sense thresholding determination module comprises:
The second loop control unit, for successively each channel being carried out to following steps, until travel through a described N channel:
Detecting unit, for detection of the thresholding transmitting power when with separately when transmitting in other channel, the signal power received in channel i;
The second computing unit, add the carrier sense thresholding of the result of the second default performance number as described channel i for the power of signal that described channel i is received.
A kind of signal transmission system comprises:
Transmitter unit, for the thresholding transmitting power P to preset
nin the channel n of the propagation medium that adopts medium radio frequency leakage principle, transmit, described default thresholding transmitting power P
nfor the quality that makes the signal received on the channel adjacent with described channel n meets the transmitting power of default condition, to the signal in orthogonal of launching in a described N channel;
Receiving element, for the carrier sense thresholding Q to preset
nreceive the signal of described channel n, described default carrier sense thresholding Q
nbe greater than with thresholding transmitting power separately when transmitting in other channel, the interference power sum of described other channel, wherein, described n=1,2 ... N, described N is integer, and N>=2.
Wi-Fi parameter determination method and device that the embodiment of the present invention provides, orthogonal channel in the propagation medium that is applied to adopt the medium radio frequency to reveal principle, determine successively the thresholding transmitting power of each orthogonal channel, while making with described thresholding transmitting power to current signal channel launched, the signal received from the adjacent channel of current channel can meet default condition, and, determine successively the carrier sense thresholding that each orthogonal channel is used thresholding transmitting power separately to transmit at other channel, because definite principle of the thresholding transmitting power of each channel is not for affecting the signal receiving quality in adjacent channel, the carrier sense thresholding of each channel is determined under the condition of the interference that can receive all other channels, principle is the interference power sum that is greater than described other channel, so, can reduce on the one hand employing medium radio frequency and reveal the interference that the leakage power of the orthogonal channel in the propagation medium of principle causes, on the other hand, the channel that can avoid leakage power to cause is kept out of the way, therefore, make same employing medium radio frequency reveal in the propagation medium of principle and can have orthogonal channel, be can transmit orthogonal signalling in same propagation medium simultaneously, thereby make multiple signals to transmit in a propagation medium, reception antenna quantity at propagation medium pipe opposite side also can be reduced to one, thereby can significantly reduce cost required while transmitting multiple signals.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart that the disclosed a kind of messaging parameter of the embodiment of the present invention is determined method;
Fig. 2 is the schematic diagram that the disclosed a kind of messaging parameter of the embodiment of the present invention is determined the application scenarios of method;
Fig. 3 is the flow chart that disclosed another messaging parameter of the embodiment of the present invention is determined method;
The flow chart that Fig. 4 is the disclosed a kind of method for transmitting signals of the embodiment of the present invention;
Fig. 5 is the structural representation that the disclosed a kind of messaging parameter of the embodiment of the present invention is determined device;
The structural representation that Fig. 6 is the disclosed a kind of signal transmission system of the embodiment of the present invention.
Embodiment
The embodiment of the invention discloses a kind of Wi-Fi parameter determination method and device, purpose is to make orthogonal signalling to transmit in the propagation medium of same employing medium radio frequency leakage principle and not disturbed by secondary lobe, its core inventive point is, determine the messaging parameter of the orthogonal channel in propagation medium, make when transmitting in each channel, can not interfere with the quality of the signal of adjacent channel, and the carrier sense thresholding of each channel is higher than the interference power sum of other all channels; Simultaneously, the embodiment of the invention also discloses a kind of method for transmitting signals and system, use above-mentioned messaging parameter after determining, in same employing medium radio frequency is revealed the propagation medium of principle, transmit orthogonal signalling.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
The disclosed a kind of Wi-Fi parameter determination method of the embodiment of the present invention, be applied to adopt the medium radio frequency to reveal the propagation medium of principle, and the propagation medium that described employing medium radio frequency is revealed principle comprises N orthogonal channel, wherein, described N is integer, and N >=2, as shown in Figure 1, described method comprises:
S101: determine successively the thresholding transmitting power when transmitting in channel n, make while transmitting to channel n with described thresholding transmitting power, the quality of the signal received from the channel adjacent with described channel n meets default condition, wherein, and described n=1,2 ... N;
Wherein default condition can be less than for the packet loss of signal default value.
The purpose of this step is, determines the thresholding transmitting power to each signal channel launched, thereby makes when transmitting in any channel, can not affect the quality of the signal received from adjacent with it channel.
It should be noted that, described thresholding transmitting power is the maximum transmission power while pointing to current signal channel launched, that is to say, when transmitting in current channel, transmitting power can not be greater than definite thresholding transmitting power.
S102: determine successively the thresholding transmitting power Q with separately
nwhen transmitting in other channel, the carrier sense thresholding of channel n, make the carrier sense thresholding of described channel n be greater than the interference power sum of described other channel, wherein, and described n=1,2 ... N.
The purpose of this step is, to with N orthogonal channel in any one channel, when transmitting with each self-corresponding thresholding transmitting power in other N-1 channel, determine the carrier sense thresholding of current channel, make the carrier sense thresholding of current channel be greater than the interference power sum of described other channel, guarantee that adjacent channel can not cause keeping out of the way of current channel.
The described Wi-Fi parameter determination method of the present embodiment, determine respectively the messaging parameter of orthogonal channel in the propagation medium that adopts the medium radio frequency to reveal principle, comprise to the thresholding transmitting power transmitted in each channel, and the carrier sense thresholding of each channel, can not affect the quality of the signal in adjacent channel while making to current signal channel launched, in other channel all during signal transmission, current channel can not be interfered and produce and keep out of the way, therefore, interfering with each other between N orthogonal channel in the propagation medium that the described method of the present embodiment can be avoided adopting the medium radio frequency to reveal principle.
The propagation medium that employing medium radio frequency described in the embodiment of the present invention is revealed principle can be waveguide, also can not do restriction here for revealing cable, for convenience of explanation, below all take waveguide and is described as example.
Disclosed another the Wi-Fi parameter determination method of the embodiment of the present invention is applied to following scene:
As shown in Figure 2, use between same waveguide track train and ground and carry out mutual Wi-Fi signal, A, the B wherein be connected with waveguide by mixer and coaxial converter, C end is the ground end, and the D be connected with the waveguide data by the Wi-Fi mode is the car end, the N in waveguide channel quadrature.Wherein, the ground end is connected with an end of waveguide with waveguide coaxial converter, ring flange by mixer successively, and the other end of waveguide arranges the leakage load and is connected with other waveguide.
As shown in Figure 3, described method comprises:
S301: with the power of presetting, in channel i, transmit, wherein, described i is integer, and the following i occurred of i≤N(is all identical, repeats no more);
Here, the maximum transmission power that default power can preferred emission equipment can reach.
S302: receive the signal on the channel adjacent with described channel i;
Wherein, the channel adjacent with channel i may only have one, also may have more than one.
S303: whether the quality of the signal on the channel adjacent with described channel i that judgement receives meets default condition, if so, carries out S305, if not, carries out S304;
Wherein, default condition can be less than for the packet loss of signal default value, and for example the packet loss of signal is less than 1% of packet total amount in signal.
S304: adjust to the transmitting power transmitted in described channel i, return and carry out S303;
If the maximum transmission power that preferred emission power is transmitter, can reduce according to default step value the transmitting power transmitted in described channel i.
S305: the transmitting power when the quality of the signal on the described channel adjacent with described channel i that receive meets default condition deducts the result of the first default performance number as the thresholding transmitting power transmitted to channel i.
Wherein, described the first default performance number is preferably default protection interval.
If the transmitting power when quality of the signal on the channel adjacent with described channel i that is: received meets default condition is P
i, by P
i-Δ 1 is as the thresholding transmitting power transmitted to channel i, and wherein, Δ 1 is default protection interval, and Δ 1 can be 10log (N-1).
It should be noted that, in actual applications, can be at an adjustable attenuator of the port front end of channel i serial connection, calculating the thresholding transmitting power P of port by method as mentioned above
iafter, by adjusting adjustable attenuator, the power that the signal that realization is launched to channel i enters waveguide is P
i-Δ 1.
S306: judge whether to travel through N channel, if so, carry out S307, if not, carry out S301;
After N channel of traversal, can determine to the thresholding transmitting power of any signal channel launched in N channel.
S307: detect when the thresholding transmitting power with separately when transmitting in other channel the signal power received in channel i;
That is: select any one channel i, the thresholding transmitting power emission definite with each channel transmits in all channels except this selected channel, detects the power of the signal received in selected channel.
S308: the power of the signal that receives in described channel i is added to the carrier sense thresholding of the result of the second default performance number as described channel i.
Wherein, the second default performance number is preferably default power protection interval.
If the power of the signal that is: received in channel i is Q
i, the carrier sense thresholding of channel i is Q
i+ Δ 2, wherein, Δ 2 is default protection interval, for example Δ 2=3dBm.
S309: judge whether to travel through N channel, if so, finish, if not, carry out S307.
After N channel of traversal, can determine the carrier sense thresholding of each channel.
Take Fig. 2 as example, determine in the present embodiment that the process of messaging parameter is specially:
A signal source is linked into to port A, and be configured to channel 1, with maximum transmission power P=15dBm, in channel 1, transmit continuously, simultaneously, at reference point D, use maximum power to transmitting data bag in the channel 6 adjacent with channel 1, packet on receive channel 6, whether the packet loss of the signal on the channel 6 that detection receives is less than default value, if not, stepping reduces the transmitting power of the signal source of port A, until the packet loss of the signal received from channel 6 is less than default value, while supposing the transmitting power of signal source is reduced to P=-2dBm, packet loss is less than default value, by P
1=-2dBm-Δ 1 is as the thresholding transmitting power of channel 1, for example, and P
1=-2dBm-10log
102=-5dBm, wherein Δ 1 is an example of the first default performance number.
It should be noted that, in Fig. 2, the channel adjacent with channel 1 only has channel 6, if during in addition other channel adjacent with channel 1, need to use above-mentioned steps, determine the thresholding transmitting power of another adjacent channel, the thresholding transmitting power using the minimum value-Δ 1 in two thresholding transmitting powers as channel 1, that is to say, should guarantee not the signal of any one adjacent channel transmission is impacted to the thresholding transmitting power transmitted in channel 1.
Similarly, the thresholding transmitting power of supposing to record channel 11 is P
11=-8dBm, at port A with P
1=-5dBm transmits, at port C with P
11=-8dBm transmits, and the power of the signal on the channel 6 that now detection port B receives supposes that the power of the channel that port B receives is-70dBm, the carrier sense thresholding of channel 6 is defined as to Q
6=-70dBm+ Δ 2=-70dBm+3dBm=-67dBm.In like manner, can determine respectively the carrier sense thresholding of channel 1 and channel 11.
The described messaging parameter of the present embodiment is determined method, by determining the thresholding transmitting power transmitted in the orthogonal channel positive to waveguide, other channel is not caused interference, and can from orthogonal channel, receive newly, can not produce because of the interference of other channel the carrier sense thresholding of the channel of keeping out of the way again, can avoid the phase mutual interference between the orthogonal channel in waveguide, therefore, can avoid the side between the orthogonal signalling in waveguide cavity to disturb, thereby make, in same waveguide, use a plurality of orthogonal channels to become possibility
The disclosed a kind of method for transmitting signals of the embodiment of the present invention as shown in Figure 4, comprising:
S401: with the thresholding transmitting power P preset
nin the channel n of waveguide, transmit;
Described default thresholding transmitting power P
nfor the quality that makes the signal received on the channel adjacent with described channel n meets the transmitting power of default condition, to the signal in orthogonal of launching in a described N channel;
That is to say, in waveguide, launch N road orthogonal signalling, the thresholding transmitting power of launching the orthogonal signalling use of every road presets, and for making to the signal of arbitrary channels transmit, can not affect the reception of the signal in adjacent channel.
For example, as shown in Figure 2, launch Train Control (the Communication Based Train Control based on communication in channel 1, CBTC) signal, launch passenger information system (Passenger Information System in channel 6, PIS) signal, wherein, the power of emission CBTC signal is P
1, the transmitting power of emission PIS signal is P
6, P
1for making from channel 6 signal received meet the thresholding transmitting power of default condition, P
6for making the signal received from channel 1 and channel 11 meet the thresholding transmitting power of default condition.
Wherein, to the thresholding determining method of launch power of each signal channel launched, as described in above-mentioned embodiment, repeat no more here.
In the present embodiment, preferably, during to different signal channel launched, use mixer that described signal is closed to road, and use waveguide coaxial converter that the input signal of described mixer is imported in described waveguide.
S402: with the carrier sense thresholding Q preset
nreceive the signal of described channel n, described default carrier sense thresholding Q
nbe greater than with thresholding transmitting power separately when transmitting in other channel, the interference power sum of described other channel, wherein, described n=1,2 ... N, described N is integer, and N>=2.
In the present embodiment, each channel receives signal with the carrier sense thresholding of presetting, default carrier sense thresholding is greater than to other channel so that the thresholding transmitting power transmits separately, summation to the interference signal of current channel, that is:, while receiving the signal in waveguide, different channels adopts the definite carrier sense thresholding of above-described embodiment.
For example, as shown in Figure 2, at port A with P
1=-5dBm transmits, at port C with P
11when=-8dBm transmits, channel 6 is intercepted signal with the carrier sense thresholding of-70dBm.
Method for transmitting signals described in the present embodiment, orthogonal signalling are transmitted in same waveguide, unlike the prior art, to the thresholding transmitting power of emission orthogonal signalling in waveguide, be to make the quality of the signal received on the channel adjacent with described channel n meet the transmitting power of default condition, the carrier sense thresholding that receives signal from channel is greater than with thresholding transmitting power separately when transmitting in other channel, the interference power sum of described other channel, thereby can avoid when the ground end transmits, reception to the signal of adjacent channel causes interference, while avoiding receiving signal from channel simultaneously, receive the interference of signal in different channels, thereby realized the transmission of multichannel orthogonal signalling in same waveguide, make multiple signals not need to use many waveguides, reduced the cost of transmission multiple signals.
With said method, embodiment is corresponding, the embodiment of the invention also discloses a kind of messaging parameter and determines device, is applied to waveguide, and described waveguide comprises N orthogonal channel, and wherein, described N is integer, and N >=2, and as shown in Figure 5, described device comprises:
Thresholding transmitting power determination module 501, the thresholding transmitting power P while transmitting to channel n for determining successively
n, making while transmitting to channel n with described thresholding transmitting power, the quality of the signal received from the channel adjacent with described channel n meets default condition;
Carrier sense thresholding determination module 502, while transmitting to other channel with thresholding transmitting power separately for determining successively, the carrier sense thresholding Q of channel n
n, make the carrier sense thresholding of described channel n be greater than the interference power sum of described other channel, wherein, described n=1,2 ... N.
Further, described thresholding transmitting power determination module comprises:
The first loop control module, for successively each channel being carried out to following steps, until travel through a described N channel:
Transmitter unit, transmit to channel i for the power to preset;
Receiving element, for receiving the signal on the channel adjacent with described channel i;
Adjustment unit, while for the quality of signal on the channel adjacent with described channel i received, not meeting default condition, adjustment is to the transmitting power transmitted in described channel i, until the quality of the signal on the described channel adjacent with described channel i that receive meets default condition;
The first computing unit, transmitting power while for the quality of the signal using on the described channel adjacent with described channel i that receive, meeting default condition deducts the result of the first default performance number as the thresholding transmitting power transmitted to channel i, wherein, described i is integer, and i≤N.
Further, described carrier sense thresholding determination module comprises:
The second loop control unit, for successively each channel being carried out to following steps, until travel through a described N channel:
Detecting unit, for detection of the thresholding transmitting power when with separately when transmitting in other channel, the signal power received in channel i;
The second computing unit, add the carrier sense thresholding of the result of the second default performance number as described channel i for the power of signal that described channel i is received.
Device described in the present embodiment can be determined respectively the messaging parameter of orthogonal channel in waveguide, comprise to the thresholding transmitting power transmitted in each channel, and the carrier sense thresholding of each channel, can not affect the quality of the signal in adjacent channel while making to current signal channel launched, in other channel all during signal transmission, current channel can not be interfered and produce and keep out of the way, and therefore, the described method of the present embodiment can be avoided interfering with each other between N orthogonal channel in waveguide.
The embodiment of the invention also discloses a kind of signal transmission system, as shown in Figure 6, comprising:
Receiving element 602, for the carrier sense thresholding Q to preset
nreceive the signal of described channel n, described default carrier sense thresholding Q
nbe greater than with thresholding transmitting power separately when transmitting in other channel, the interference power sum of described other channel, wherein, described n=1,2 ... N, described N is integer, and N>=2.
In the system of track train and ground communication, specifically arranging of the described system of the present embodiment can be as shown in Figure 2, the signal transmitter that described transmitter unit can be held with comprising, the thresholding transmitting power that it adopts to different signal channel launcheds can guarantee that the signal that the signal of emission does not receive adjacent channel causes interference, the signal receiver that receiving element can be held with comprising, its carrier sense thresholding that receives signal from different channels guarantees that the reception of current channel signal is not subject to the interference of the signal other channel.Therefore, the described signal transmission system of the present embodiment, can be used waveguide multichannel orthogonal signalling.
If the described function of the present embodiment method usings that the form of SFU software functional unit realizes and during as production marketing independently or use, can be stored in a computing equipment read/write memory medium.Understanding based on such, the part that the embodiment of the present invention contributes to prior art or the part of this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprise that some instructions are with so that a computing equipment (can be personal computer, server, mobile computing device or the network equipment etc.) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that between each embodiment, same or similar part is mutually referring to getting final product.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a Wi-Fi parameter determination method, is characterized in that, is applied to adopt the medium radio frequency to reveal the propagation medium of principle, and described propagation medium comprises N orthogonal channel, and wherein, described N is integer, and N >=2, and described method comprises:
Determine successively the thresholding transmitting power P when transmitting in channel n
n, making while transmitting to channel n with described thresholding transmitting power, the quality of the signal received from the channel adjacent with described channel n meets default condition;
Determine successively with thresholding transmitting power separately when transmitting in other channel the carrier sense thresholding Q of channel n
n, make the carrier sense thresholding of described channel n be greater than the interference power sum of described other channel, wherein, described n=1,2 ... N.
2. method according to claim 1, is characterized in that, describedly determines that successively the thresholding transmitting power when transmitting in channel n comprises:
Successively each channel is carried out to following steps, until travel through a described N channel:
With the power of presetting, in channel i, transmit;
Receive the signal on the channel adjacent with described channel i;
When the quality of the signal on the channel adjacent with described channel i received does not meet default condition, adjustment is to the transmitting power transmitted in described channel i, until the quality of the signal on the described channel adjacent with described channel i that receive meets default condition;
Transmitting power when the quality of the signal on the described channel adjacent with described channel i that receive meets default condition deducts the result of the first default performance number as the thresholding transmitting power transmitted to channel i, wherein, described i is integer, and i≤N.
3. method according to claim 1 and 2, is characterized in that, describedly determines successively that with thresholding transmitting power separately the carrier sense thresholding of channel n comprises when transmitting in other channel:
Successively each channel is carried out to following steps, until travel through a described N channel:
Detect when the thresholding transmitting power with separately when transmitting in other channel the signal power received in channel i;
The power of the signal that receives in described channel i is added to the carrier sense thresholding of the result of the second default performance number as described channel i.
4. method according to claim 1, is characterized in that, described default condition comprises:
The packet loss of signal is less than default value.
5. a method for transmitting signals, is characterized in that, comprising:
With the thresholding transmitting power P preset
nin the channel n of the propagation medium that adopts medium radio frequency leakage principle, transmit, described default thresholding transmitting power P
nfor the quality that makes the signal received on the channel adjacent with described channel n meets the transmitting power of default condition, to the signal in orthogonal of launching in a described N channel;
With the carrier sense thresholding Q preset
nreceive the signal of described channel n, described default carrier sense thresholding Q
nbe greater than with thresholding transmitting power separately when transmitting in other channel, the interference power sum of described other channel, wherein, described n=1,2 ... N, described N is integer, and N>=2.
6. method according to claim 5, is characterized in that, the described thresholding transmitting power P to preset
nto transmitting in described channel n, comprise:
Use mixer that described signal is closed to road;
Use coaxial converter that the input signal of described mixer is imported in described propagation medium.
7. a Wi-Fi parameter is determined device, it is characterized in that, is applied to adopt the medium radio frequency to reveal the propagation medium of principle, and described propagation medium comprises N orthogonal channel, and wherein, described N is integer, and N >=2, and described device comprises:
Thresholding transmitting power determination module, the thresholding transmitting power P while transmitting to channel n for determining successively
n, making while transmitting to channel n with described thresholding transmitting power, the quality of the signal received from the channel adjacent with described channel n meets default condition;
Carrier sense thresholding determination module, while transmitting to other channel with thresholding transmitting power separately for determining successively, the carrier sense thresholding Q of channel n
n, make the carrier sense thresholding of described channel n be greater than the interference power sum of described other channel, wherein, described n=1,2 ... N.
8. device according to claim 7, is characterized in that, described thresholding transmitting power determination module comprises:
The first loop control module, for successively each channel being carried out to following steps, until travel through a described N channel:
Transmitter unit, transmit to channel i for the power to preset;
Receiving element, for receiving the signal on the channel adjacent with described channel i;
Adjustment unit, while for the quality of signal on the channel adjacent with described channel i received, not meeting default condition, adjustment is to the transmitting power transmitted in described channel i, until the quality of the signal on the described channel adjacent with described channel i that receive meets default condition;
The first computing unit, transmitting power while for the quality of the signal using on the described channel adjacent with described channel i that receive, meeting default condition deducts the result of the first default performance number as the thresholding transmitting power transmitted to channel i, wherein, described i is integer, and i≤N.
9. device according to claim 7, is characterized in that, described carrier sense thresholding determination module comprises:
The second loop control unit, for successively each channel being carried out to following steps, until travel through a described N channel:
Detecting unit, for detection of the thresholding transmitting power when with separately when transmitting in other channel, the signal power received in channel i;
The second computing unit, add the carrier sense thresholding of the result of the second default performance number as described channel i for the power of signal that described channel i is received.
10. a signal transmission system, is characterized in that, comprising:
Transmitter unit, for the thresholding transmitting power P to preset
nin the channel n of the propagation medium that adopts medium radio frequency leakage principle, transmit, described default thresholding transmitting power P
nfor the quality that makes the signal received on the channel adjacent with described channel n meets the transmitting power of default condition, to the signal in orthogonal of launching in a described N channel;
Receiving element, for the carrier sense thresholding Q to preset
nreceive the signal of described channel n, described default carrier sense thresholding Q
nbe greater than with thresholding transmitting power separately when transmitting in other channel, the interference power sum of described other channel, wherein, described n=1,2 ... N, described N is integer, and N>=2.
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