CN108882351A - The gain adjusting method of wireless communication - Google Patents
The gain adjusting method of wireless communication Download PDFInfo
- Publication number
- CN108882351A CN108882351A CN201710340638.3A CN201710340638A CN108882351A CN 108882351 A CN108882351 A CN 108882351A CN 201710340638 A CN201710340638 A CN 201710340638A CN 108882351 A CN108882351 A CN 108882351A
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- Prior art keywords
- power gain
- package
- gain
- appropriate power
- state parameter
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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
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
-
- 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
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
-
- 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
- H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
Abstract
The invention discloses a kind of gain adjusting methods of wireless communication, are executed by a wireless transmitter and receiver, and an embodiment of this method comprises the steps of：Obtain an at least transmission state parameter for a radio connecting object；According to an at least transmission state parameter, an appropriate power gain is determined；One standby power gain of one radio circuit is set as the appropriate power gain up to a period of time, or in this time, the standby power gain of the radio circuit is set as the appropriate power gain until there is package to send or receive；And if in receiving without package transmission with package in this time, when reaching this time, the standby power gain of the radio circuit is set as an initial power gain.
Description
Technical field
The present invention relates to gain adjusting methods, more particularly to the gain adjusting method of wireless communication.
Background technique
In the package form design of wireless communication system, in order to reach preamble detection, signal synchronization, Air conduct measurement ...
The purpose of, preamble (preamble) can be added in the front end of package.During a receiving end demodulates a package, once it should
Receiving end finds that the field in the package is illegal, or has cyclic redundancy check error (Cyclic Redundancy
Check error；CRC error), the situations such as parity checking mistake (parity check error) occur, the receiving end
It will think this package not and be the package that the receiving end is wanted, and the package is considered as a false alarm (false alarm), at this time
The receiving end can stop the demodulation to this package, and next package is waited to come in.
In radio area network (wireless local-area network now；WLAN) in system, wlan system
The frequency band used is easy to be interfered, and it is bad that this interference may cause reception situation.The characteristic of some interference is it is obvious that be easy quilt
Detection and exclusion, therefore will not influence the detection of normal package.Some interfere the package preamble of then much like WLAN, such dry
Disturbing will lead to a wireless receiver error detection and false alarm occurs, and therefore, technology can be such that wireless receiver adjustment one penetrates at present
The initial power gain of frequency circuit, to avoid the generation of false alarm, however, technology is the initial power for downgrading the radio circuit at present
Rate gain interfere the wireless receiver will not to majority and generate reaction or tetchiness, but such way was it is also possible that should
Wireless receiver can not detect normal package, or the wireless receiver is made to receive normal package with can not be successfully.
Summary of the invention
A purpose of the present invention is that a kind of gain adjusting method of wireless communication is provided, to avoid asking for the prior art
Topic.
It the invention discloses a kind of gain adjusting method of wireless communication, is executed by a wireless transmitter and receiver, this method
An embodiment comprise the steps of：Obtain an at least transmission state parameter for a radio connecting object；According at least one biography
Defeated state parameter determines an appropriate power gain；One standby power gain of one radio circuit is set as the appropriate power gain
Up to a period of time, or in this time, it is straight that the standby power gain of the radio circuit is set as the appropriate power gain
To there is package to send or receive；And if in this time without package transmission with package receive, when reaching this time,
The standby power gain of the radio circuit is set as an initial power gain.
Another embodiment of preceding method comprises the steps of：Obtain at least transmission state ginseng of a radio connecting object
Number；According to an at least transmission state parameter, an appropriate power gain is determined；One standby power gain of one radio circuit is set
It is the appropriate power gain until reaching a period of time or until there is package to send or receive；If in having package in this time
It sendes or receive, automatic growth control is imposed to the radio circuit；And if in this time without package transmission and package
It receives, when reaching this time, the standby power gain of the radio circuit is set as an initial power gain.
Feature, implementation and technical effect for the present invention, hereby attached drawing being cooperated to make preferred embodiment, detailed description are as follows.
Detailed description of the invention
Fig. 1 shows an embodiment of the gain adjusting method of wireless communication of the invention；
Fig. 2 shows an embodiment of the step S120 of Fig. 1；
Fig. 3 shows another embodiment of the step S120 of Fig. 1；And
Fig. 4 shows the another embodiment of the step S120 of Fig. 1.
Description of symbols：
S110~S140 step
S210~S220 step
S310~S330 step
S410~S420 step
Specific embodiment
After the expected package of the present invention sendes or receive, it is possible to the package that will receive the same line object transmission, because
This present invention adjusts the power gain of a radio circuit, adaptively after package sendes or receive to can be successfully
The signal from same line object is received, in addition, the present invention can be according to the difference between the line object and an interference signal
The power gain is set, efficiently to inhibit to interfere, and reduces false alarm incidence.
Fig. 1 shows an embodiment of the gain adjusting method of wireless communication of the invention.The embodiment of Fig. 1 is wireless by one
Transmitter and receiver executes, this is wireless that transmitter and receiver is the device for meeting 802.11 standards, seems a wireless access point or it is impartial；When
So, under the premise of being embodied as possible, this is wireless, and transmitter and receiver can be the device for meeting other wireless communication standards.The reality of Fig. 1
Example is applied to comprise the steps of：
Step S110：Obtain an at least transmission state parameter for a radio connecting object (such as mobile phone, computer etc.).
For example, which can be based in " transmission " package to before or while the radio connecting object
Previous biography is brought drill to an end work, obtain following parameters at least one as the transmission state parameter：One received signal strength refers to
Mark (Received Signal Strength Indicator；RSSI) or it is impartial；One news are miscellaneous than (Signal-to-Noise
Ratio；SNR) or it is impartial；One transmission range or its equalization；One transmission rate or its equalization；One data error rate or its
Deng；One number of retransmissions or its equalization；And one modulation with encoding mechanism (Modulation and Coding Scheme；MCS)
Type or its equalization.Above-mentioned each parameter is based on theoretical or implementation result and to be associated with a reception power gain (such as aftermentioned appropriate
Power gain), it is however generally that, when the signal of the radio connecting object is stronger, SNR is higher, transmission range is shorter, transmission rate is cured
It is high, data error rate is lower, number of retransmissions less or the wireless transmitter and receiver is cured the receiving sensitivity of the signal of a certain MCS
Height, the reception power gain associated by the parameter are just smaller.
Separately for example, this is wireless transmitter and receiver in " receptions " after a package of the radio connecting object, foundation in order to
An automatic growth control of the package is received as a result, generating an at least transmission state parameter.
Step S120：According to an at least transmission state parameter, an appropriate power gain is determined.
For example, it is suitable for receiving this wirelessly when the wireless transmitter and receiver is determined according to an at least transmission state parameter
Behind one minimum power gain of the package of line object, a maximum power gain or a power gain section, this is wireless transmitter and receiver
Even the appropriate power gain is not less than the minimum power gain, no more than the maximum power gain or positioned at the power gain area
In.
Step S130：One standby power gain of one radio circuit is set as the appropriate power gain up to a period of time；Or
Person in this time, by the standby power gain of the radio circuit be set as the appropriate power gain until have package transmit or
It receives.
For example, the wireless transmitter and receiver is subsequent/immediately to wait for this after " transmission " package gives the radio connecting object
Machine power gain is set as the appropriate power gain up to the first segment time, if in there is package to transmit or connect in the first segment time
It receives, the automatic gain control function of this is wireless transmitter and receiver is the setting for taking over the power gain of the radio circuit.
Separately for example, this is wireless transmitter and receiver in " receptions " after a package of the radio connecting object, it is subsequent/immediately
The standby power gain is set as the appropriate power gain up to the second segment time, if the second segment time in have package transmit or
It receives, the automatic gain control function of this is wireless transmitter and receiver is the setting for taking over the power gain of the radio circuit.Above-mentioned second
The section time can be identical to or different from the aforementioned first segment time.
Step S140：If in this time without package transmission with package receive, when reaching this time (or say in
At the end of this time), then/the standby power gain of the radio circuit is set as an initial power gain immediately；If in
There is package to send or receive in this time, automatic growth control is imposed to the radio circuit to handle package transmission or connect
It receives.
In general, the initial power gain is suitable for receiving multiple wireless devices including the radio connecting object
Package, and the appropriate power gain is applicable in/is exclusively used in the package for receiving the radio connecting object, due to the purposes of this two gain
Difference is also typically different in setting.
In an embodiment, to guarantee to accept the package of the radio connecting object, the step S120 of Fig. 1 is optionally
It comprises the steps of as shown in Figure 2：
Step S210：A baseband circuit according to an at least transmission state parameter, and according to the wireless transmitter and receiver
At least one of the setting of one signal processing and a preamble detection ability, determine a lower limit of the appropriate power gain.
For example, which points out the radio connecting object that the wireless transmitter and receiver is received
Signal strength is -60dBmW, and the signal processing of the baseband circuit is set as handling the signal of 0dBmW, the package of the baseband circuit
Detectability is 10dB, then in order to receive the package that the radio connecting object is then sent, the lower limit of the appropriate power gain is answered
For：" the signal strength of the signal processing setting=radio connecting object+preamble detection ability+appropriate power gain
Lower limit (lower limit of the 0=-60+10+ appropriate power gain) ".Therefore, the lower limit of the appropriate power gain should be 50dB.
Step S220：Enable the appropriate power gain not less than the lower limit.
For example, for the wireless transmitter and receiver from multiple predetermined power gains, selection is not less than a default function of the lower limit
Rate gain is as the appropriate power gain, to guarantee to accept the package of the radio connecting object.
In an embodiment, to exclude interference more serious in environment, the step S120 of Fig. 1 is optionally further wrapped
It is as shown in Figure 3 containing the following steps：
Step S310：The interfering energy of a noise is detected, and determines a noise Rx power accordingly.
For example, the information of the wireless transmitter and receiver according to the noise for previously causing false alarm, judges the dry of the noise
Energy is disturbed, to determine the noise Rx power.
Step S320：According at least one of signal processing setting and the preamble detection ability, and according to this
Noise Rx power determines a upper limit of the appropriate power gain.
For example, the signal processing of the baseband circuit is set as handling the signal of 0dBmW, the package inspection of the baseband circuit
Survey ability is 10dB, which is -75dBmW, then in order to avoid the noise causes false alarm, which increases
The upper limit of benefit should be：" signal processing setting=noise Rx power+preamble detection the ability+appropriate the power gain (0
The upper limit of the=- 75+10+ appropriate power gain) ".Therefore, the upper limit of the appropriate power gain should be 65dB.
Step S330：Enable the appropriate power gain no more than the upper limit.
For example, when the lower limit of the appropriate power gain and the upper limit are decided to be 50dB and 65dB respectively, the nothing
Line transmitter and receiver selects the predetermined power gain between the upper limit and the lower limit as this from multiple predetermined power gains
Appropriate power gain, in the case of can accept the package of the radio connecting object, to avoid receiving the noise.It is noticeable
It is that, if the lower limit is greater than the upper limit, this example is to enable the appropriate power gain not less than the lower limit.
Separately for example, when aforementioned minimum is not determined, but the upper limit has been decided to be 65dB, this is wireless transmitter and receiver from
In multiple predetermined power gains, select a predetermined power gain no more than the upper limit as the appropriate power gain, to avoid
Receive the noise.
It is weak (channel fading) for the caused channel of docking adapter delay in an embodiment, the step of Fig. 1
It is as shown in Figure 4 that S120 optionally further includes the following steps：
Step S410：An environment communication channel delay is detected, and judges whether the environment communication channel delay is greater than a threshold value.
Step S420：When judging that the environment communication channel delay is greater than the threshold value, the appropriate function is improved according to a compensation rate
One lower limit of rate gain, wherein the appropriate power gain is not less than the lower limit.
For example, the lower limit that the lower limit of the appropriate power gain was determined by abovementioned steps S210 originally, passes through step
S420, the lower limit rise to：Lower limit (such as 50dB)+compensation rate (such as 5dB) that original determines.
The type that preceding description mentions MCS can be used as the transmission state parameter.Specifically, if the wireless transmitter and receiver receives
The sensitivity (sensitivity) of the package of MCS-9 is -60dBmW, and the sensitivity for receiving the package of MCS-8 is -65dBmW, and
This is wireless, and transmitter and receiver can only successfully accept the package of the MCS-8 from the radio connecting object at that time, and cannot successfully take down
From the package of the MCS-9 of the radio connecting object, this is wireless transmitter and receiver can estimate out according to above- mentioned information its received should
The signal strength of the package of MCS-8 is therefore, to be set as locating in the signal processing of aforementioned baseband circuit between (- 63 ± 2) dBmW
In the case of the preamble detection ability of the signal and aforementioned baseband circuit of managing 0dBmW is 10dB, in order to receive the envelope of the MCS-8
Packet, the lower limit of aforementioned appropriate power gain should be：The signal strength of the package of the signal processing setting=MCS-8+package
Detectability+appropriate power gain lower limit (lower limit of the 0=-63+10+ appropriate power gain).Therefore, the appropriate power
The lower limit of gain should be 53dB, and the upper limit of the appropriate power gain can be the lower limit plus a preset value, or as before stated
As bright, the upper limit of the appropriate power gain is the intensity of foundation interference to determine.Above-mentioned MCS-8 and MCS-9 is this field institute
Well known modulation system, details are omitted herein.
It note that under the premise of being embodied as possible, those skilled in the art of the present technique optionally implement aforementioned any
Part or all technical features in embodiment, or selectively implement in aforesaid plurality of embodiment part or all technical features
Combination thereby increases the elasticity when present invention is implemented.It separately note that method of the invention is the firmware by a wireless transmitter and receiver
And/or software is realized, without changing the hardware of the wireless transmitter and receiver；In other words, method of the invention can be by existing wireless
The hardware of transmitter and receiver executes.
In conclusion the present invention is in transmission package or after receiving package to a line object, it is contemplated that next have very big
Possibility will receive the package of same line object, therefore by the standby power gain adjustment of the radio circuit of a wireless transmitter and receiver
For an appropriate power gain, this appropriate power gain can allow the wireless transmitter and receiver correctly to accept the package of the line object and drop
The probability of low false alarm waited a period of time not receive package or transmission package, the present invention again by the radio circuit to
It is an initial power gain that machine power gain, which is replied,.
Although the embodiment of the present invention is as described above, however the embodiment not is used to limit the present invention, this technology neck
The content that field technique personnel can express or imply according to the present invention imposes variation, this all various change to technical characteristic of the invention
Change may belong to scope of patent protection sought by the present invention, and in other words, scope of patent protection of the invention must regard this explanation
Subject to the as defined in claim of book.
Claims (10)
1. a kind of gain adjusting method of wireless communication, is executed by a wireless transmitter and receiver, this method includes：
Obtain an at least transmission state parameter for a radio connecting object；
According to an at least transmission state parameter, an appropriate power gain is determined；
One standby power gain of one radio circuit is set as the appropriate power gain up to a period of time；And
When reaching this time, the standby power gain of the radio circuit is set as an initial power gain.
2. the gain adjusting method wirelessly communicated as described in claim 1, wherein it is appropriate that the standby power gain is set as this
The step of power gain includes：
A package is transmitted to the radio connecting object；
And after transmitting the package, which is set as the appropriate power gain,
Wherein an at least transmission state parameter is at least one of the following parameters of the radio connecting object：One receives letter
Number intensity index or it is impartial；The miscellaneous ratio of one news or its equalization；One transmission range or its equalization；One transmission rate or its equalization；One
Data error rate or its equalization；One number of retransmissions or its equalization；And modulation and an encoding mechanism type or it is impartial.
3. the gain adjusting method wirelessly communicated as claimed in claim 2, wherein the step of determining appropriate power gain packet
Contain：
Signal processing setting and a preamble detection energy according to an at least transmission state parameter, and according to a baseband circuit
At least one of power determines a lower limit of the appropriate power gain；And
Enable the appropriate power gain not less than the lower limit.
4. the gain adjusting method wirelessly communicated as described in claim 1, wherein the step of determining appropriate power gain packet
Contain：
An environment communication channel delay is detected, and judges whether the environment communication channel delay is greater than a threshold value；And
When judging that the environment communication channel delay is greater than the threshold value, the appropriate power gain is improved once according to a compensation rate
Limit, wherein the appropriate power gain is not less than the lower limit.
5. the gain adjusting method wirelessly communicated as described in claim 1, wherein obtaining an at least transmission state parameter
Step includes：
Receive a package of the radio connecting object；And
According in order to receive an automatic growth control of the package as a result, generating an at least transmission state parameter.
6. the gain adjusting method wirelessly communicated as claimed in claim 5, wherein the step of determining appropriate power gain packet
Contain：
Signal processing setting and a preamble detection energy according to an at least transmission state parameter, and according to a baseband circuit
At least one of power determines a lower limit of the appropriate power gain；And
Enable the appropriate power gain not less than the lower limit.
7. the gain adjusting method of the wireless communication as described in claim 2, the 3rd, the 5th or the 6th, wherein determining that this is suitable
It is further included when the step of power gain：
The interfering energy of a noise is detected, and determines a noise Rx power accordingly；
According at least one of signal processing setting and the preamble detection ability, and according to the noise Rx power,
Determine a upper limit of the appropriate power gain；And
Enable the appropriate power gain no more than the upper limit.
8. a kind of gain adjusting method of wireless communication, is executed by a wireless transmitter and receiver, this method includes：
Obtain an at least transmission state parameter for a radio connecting object；
According to an at least transmission state parameter, an appropriate power gain is determined；
One standby power gain of one radio circuit is set as the appropriate power gain until reaching a period of time or until having
Package sendes or receive；
If imposing automatic growth control to the radio circuit in thering is package to send or receive in this time；And
If in being received without package transmission with package in this time, when reaching this time, by the radio circuit should be to
Machine power gain is set as an initial power gain.
9. the gain adjusting method wirelessly communicated as claimed in claim 8, wherein it is appropriate that the standby power gain is set as this
The step of power gain includes：A package is transmitted to the radio connecting object；And after transmitting the package, by the standby power
Gain is set as the appropriate power gain,
Wherein an at least transmission state parameter is at least one of the following parameters of the radio connecting object：
One received signal strength index or its equalization；
The miscellaneous ratio of one news or its equalization；
One transmission range or its equalization；
One transmission rate or its equalization；
One data error rate or its equalization；
One number of retransmissions or its equalization；And
One modulation and encoding mechanism type or its equalization.
10. the gain adjusting method wirelessly communicated as claimed in claim 8, wherein obtaining an at least transmission state parameter
Step includes：
Receive a package of the radio connecting object；And
According in order to receive an automatic growth control of the package as a result, generating an at least transmission state parameter.
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| CN201710340638.3A CN108882351B (en) | 2017-05-15 | 2017-05-15 | Gain adjustment method for wireless communication |
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|---|---|---|---|
| CN201710340638.3A CN108882351B (en) | 2017-05-15 | 2017-05-15 | Gain adjustment method for wireless communication |
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| CN108882351A true CN108882351A (en) | 2018-11-23 |
| CN108882351B CN108882351B (en) | 2021-09-14 |
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| CN1585285A (en) * | 2003-08-20 | 2005-02-23 | 智邦科技股份有限公司 | Gain control method and system for wireless communication system |
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| US20100291864A1 (en) * | 2009-05-18 | 2010-11-18 | Institute For Information Industry | Gain adjustment apparatus, method, and tangible machine-readable medium thereof for a multiple input multiple output wireless communication system |
| CN104124986A (en) * | 2013-04-24 | 2014-10-29 | 晨星半导体股份有限公司 | Wireless signal receiver and signal processing method thereof |
| CN104467910A (en) * | 2013-09-16 | 2015-03-25 | 瑞昱半导体股份有限公司 | Wireless communication device and control method thereof |
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| CN1585285A (en) * | 2003-08-20 | 2005-02-23 | 智邦科技股份有限公司 | Gain control method and system for wireless communication system |
| CN101714883A (en) * | 2008-10-07 | 2010-05-26 | 北京六合万通微电子技术股份有限公司 | Method and system for transmitting and receiving data signal of site/access point in wireless local area network |
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| US20100291864A1 (en) * | 2009-05-18 | 2010-11-18 | Institute For Information Industry | Gain adjustment apparatus, method, and tangible machine-readable medium thereof for a multiple input multiple output wireless communication system |
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| CN108882351B (en) | 2021-09-14 |
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