CN105323778B - Wireless communication device and method - Google Patents
Wireless communication device and method Download PDFInfo
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- CN105323778B CN105323778B CN201410282783.7A CN201410282783A CN105323778B CN 105323778 B CN105323778 B CN 105323778B CN 201410282783 A CN201410282783 A CN 201410282783A CN 105323778 B CN105323778 B CN 105323778B
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Abstract
The invention discloses a kind of wireless communication device and method, allow to the property of can adapt to the threshold value that data packet is transmitted or adjustment data packet is transmitted.One embodiment of the wireless communication device includes: one receives circuit, for estimating signal energy and generates multiple energy estimated values, and generates multiple comparison results according to the multiple energy estimated value and an at least threshold value；One control circuit couples the reception circuit, is used to generate a transmission control signal according to the multiple comparison result or its derivation information；An and transmitting circuit, couple the reception circuit and the control circuit, judge whether to be allowed to execute data packet transmission according to the transmission control signal when judging whether to be allowed to execute data packet transmission according to the multiple comparison result when controlling one normal condition of signal designation for the transmission, and controlling one abnormality of signal designation for the transmission.
Description
Technical field
The present invention relates to wireless communication devices and method, especially with respect to the property of can adapt to allow data packet transmit or
Adjust the wireless communication device and method of the threshold value of data packet transmission.
Background technique
Typically, a wireless device (such as one meet 802.11 standard criterions wireless device) can be via one or more
One of a predetermined channel transmits data packet.When the wireless device transmissions data packet, if another wireless device passes through
Data packet is transmitted by same channel, the data packet of the two wireless devices can interfere with each other, and may cause any wireless device
Data packet transmission failure or the data packet transmission of two wireless devices fail.Above-mentioned interference problem is known as data packet collision
(Packet Collision)。
In order to avoid data packet collision, multiple wireless devices in consolidated network system can be used with collision detection or touch
Hit the agreement of avoidance mechanism, such as carrier detect multiple access (the Carrier Sense Multiple that tool collision avoids
Access with Collision Avoidance, CSMA/CA) agreement.For example, competing in meeting one of CSMA/CA agreement
It strives in formula network system (Contention-Based Network System), once there is a wireless device under competition mechanism
It obtains conveyer meeting and starts to transmit data packet, other wireless devices for competing for identical traffic chance must be in triumph without traditional thread binding
Suspend during setting indicated transmission transfer program (such as (Backoff Counting) program reciprocal or by data packet by
MAC layer circuit is delivered to the program of physical layer circuit), data packet collision is avoided whereby.
However, if above-mentioned other wireless devices suspend transmission journey to the signal that will not be interfered because an intensity is faint
Sequence, this pause will not bring any benefit, can only waste the handling capacity (Throughput) of network transmission, and therefore, one is used to
Decide whether that the benchmark of pause transmission obviously has its necessity.It more expressly says, carries out same protocol (such as CSAM agreement) in one
Network system in, multiple wireless devices may share same transmission channel, at this time any wireless device (rear to claim to censure device)
The signal for whether there are other wireless devices to be transmitted in this channel can be listened to, if the letter censured device and receive other devices
Number, it can be by the intensity of received signal and a default threshold (such as idle clear channel assessment (CCA) (Clear a Channel
Assessment, CCA) threshold value, usually defined or standardized by above-mentioned agreement) compare, if comparison result shows that this receives letter
Number intensity be lower than the preset threshold, it may be noise or insignificant signal that this, which receives signal, simultaneously, censure device
The channel can be considered as to the free time, and data packet transmission or other the step of could executing when channel idle can be carried out；Phase
Pair, if comparison result shows that this receives the intensity of signal and is higher than the preset threshold, this, which receives signal, need to be considered as effectively believing
Number, at this point, censuring device just need to suspend its transfer program during the transmission indicated by the reception signal.
Through aforesaid way, wireless device can avoid data packet collision.But in some cases, pause transfer program is not but
Seeming is decision appropriate.It for example, may be because making an uproar if a wireless device is in an environment for being full of noise (Noisy)
Sound shadow is loud and constantly or in most time suspends transfer program, and in other words, this wireless device may be because of noise intensity usually
Higher than itself preset threshold and think that transmission channel is busy, and then suspend transfer program for a long time or continually, so that transmission
Efficiency is not evident.In addition, writing from memory if a wireless device receives to be higher than because of the processing procedure of itself, design or the influence of adjacent perimeter device
Recognize the interference signal (it may not be the signal of wireless device) of threshold value, also can be therefore long-term or frequently suspend transfer program,
It causes to be unable to reach expected transmission efficiency in itself.
In view of channel radio above-mentioned, that this field needs one kind that can influence in response to noisy environment and/or inside/ambient signal
Letter technology maintains the efficiency of wireless transmission whereby or avoids its intolerable degradation.
Summary of the invention
An object of the present invention is to provide wireless communication devices and method, to solve the problems, such as prior art.
The present invention proposes a kind of wireless communication device, the property of can adapt to data packet is allowed to transmit.The wireless communication dress
The one embodiment set includes: one receives circuit, for estimating signal energy and generates multiple energy estimated values, and according to described
Multiple energy estimated values and an at least threshold value generate multiple comparison results；One control circuit couples the reception circuit, be used to according to
A transmission control signal is generated according to the multiple comparison result or its derivation information；And a transmitting circuit, couple the reception
Circuit and the control circuit are sentenced when controlling one normal condition of signal designation for the transmission according to the multiple comparison result
It is disconnected whether to be allowed to execute data packet transmission, and be used for when the transmission controls one abnormality of signal designation according to the transmission
Control signal judges whether to be allowed to execute data packet transmission.
The present invention separately proposes a kind of wireless communication device, adjusts to the property of can adapt to the threshold value of a data packet transmission.It is described
One embodiment of wireless communication device includes: a control circuit, for carrying out gain control to reduce outer signals interference；
And one receive circuit, for estimating survivor energy after the control circuit reduces outer signals interference and generating
One energy estimated value, and the threshold value according to the energy estimated value and data packet transmission generates a comparison result, wherein if
The comparison result points out that data packet transmission is not allowed to, and the control circuit relaxes the threshold value of the data packet transmission.
The present invention also proposes a kind of wireless communication device, adjusts to the property of can adapt to the threshold value of data packet transmission.It is described
One embodiment of wireless communication device includes: one receives circuit, for estimating signal energy and generates multiple energy estimated values,
And multiple comparison results are generated according to the multiple energy estimated value and the threshold value of the data packet transmission；And one control electricity
Relax the data packet after not being allowed to for N number of display data packet transmission in the multiple comparison result and transmit it in road
Threshold value, wherein N is the positive integer greater than 1.
In addition, the present invention correspondingly proposes a kind of wireless communications method, be by wireless communication device of the invention or its
Equivalent device executes, and the property of can adapt to data packet is allowed to transmit.One embodiment of the method, which comprises the steps of, to be estimated
Signal energy is surveyed to generate multiple energy estimated values；Multiple ratios are generated according to the multiple energy estimated value and at least one threshold value
Relatively result；A transmission control signal is generated according to the multiple comparison result or its derivation information；And it is controlled in the transmission
Judge whether to be allowed to execute data packet transmission according to the multiple comparison result when one normal condition of signal designation, and in described
Judge whether to be allowed to execute data packet transmission according to the transmission control signal when transmission control one abnormality of signal designation.
The present invention separately proposes a kind of wireless communications method, is equally held by wireless communication device of the present invention or its equivalent device
Row adjusts to the property of can adapt to the threshold value of data packet transmission.One embodiment of the method, which comprises the steps of, executes increasing
Benefit control is to reduce outer signals interference；After the control circuit reduces the outer signals interference, estimating signal energy is simultaneously
Generate an energy estimated value；Threshold value according to the energy estimated value and data packet transmission generates a comparison result；And
If the comparison result points out data packet, transmission is not allowed to, and relaxes the threshold value of the data packet transmission.
The present invention also proposes a kind of wireless communications method, is held by wireless communication device of the invention or its equivalent device
Row adjusts to the property of can adapt to the threshold value of data packet transmission.One embodiment of the method comprises the steps of estimation letter
Number energy simultaneously generates multiple energy estimated values；Threshold value according to the multiple energy estimated value and data packet transmission generates more
A comparison result；And after at least half of the multiple comparison result shows that data packet transmission is not allowed to, relax described
The threshold value of data packet transmission.
Feature, implementation and effect for the present invention, making preferred embodiment with reference to attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of wireless communication device of the invention；
Fig. 2 is the relational graph of signal energy, energy estimated value and comparison result；
Fig. 3 is the schematic diagram of one embodiment of the reception circuit of Fig. 1；
Fig. 4 is the schematic diagram of another embodiment of wireless communication device of the invention；
Fig. 5 a is the schematic diagram of another embodiment of wireless communication device of the invention；
Fig. 5 b is the schematic diagram of the further embodiment of wireless communication device of the invention；
Fig. 6 is the schematic diagram of one embodiment of wireless communications method of the invention；
Fig. 7 is the schematic diagram of another embodiment of wireless communications method of the invention；And
Fig. 8 is the schematic diagram of another embodiment of wireless communications method of the invention.
Appended drawing reference
100 wireless communication devices
110 receive circuit
112 energy estimation circuits
114 comparison circuits
116 statistical circuits
120 control circuits
130 transmitting circuits
400 wireless communication devices
410 control circuits
420 receive circuit
500 wireless communication devices
510 receive circuit
520 control circuits
530 transmitting circuits
532 MAC (MAC layer circuit)
534 PHY (physical layer circuit)
TH_L2H level is down to high threshold
TH_H2L level up to Low threshold
S610 estimating signal energy is to generate multiple energy estimated values
S620 generates multiple comparison results according to the multiple energy estimated value and at least one threshold value
S630 generates a transmission control signal according to the multiple comparison result or its derivation information
S640 judges when the transmission controls one normal condition of signal designation according to the multiple comparison result
It is no to be allowed to execute data packet transmission, and control and believe according to the transmission when transmission controls one abnormality of signal designation
Number judge whether to be allowed to execute data packet transmission
S710 executes gain control to reduce outer signals interference
For S720 after reducing the outer signals interference, estimating signal energy simultaneously generates an energy estimated value
S730 generates a comparison result according to the threshold value that the energy estimated value and a data packet transmit
If the S740 comparison result points out data packet, transmission is not allowed to, and relaxes the threshold value of the data packet transmission
S810 estimating signal energy simultaneously generates multiple energy estimated values
S820 generates multiple comparison results according to the threshold value that the multiple energy estimated value and a data packet transmit
S830 relaxes the data after N number of display data packet transmission of the multiple comparison result is not allowed to
Wrap the threshold value of transmission
Specific embodiment
The technical terms of following description are the idioms referring to the art, if this specification is to part term
Be illustrated or define, the explanation of the part term should be subject to this specification explanation or definition.
The present invention includes wireless communication device and method, the apparatus and method property of can adapt to data packet is allowed to pass
Defeated or adjustment data packet transmission threshold value, maintains efficiency of transmission whereby or avoids its intolerable degradation, above-mentioned threshold value is, for example, the free time
Channel estimating (Clear Channel Assessment, CCA) threshold value, right other types of threshold value are not influencing exploitativeness
Under the premise of also be used to be of the invention.The present invention can be used for avoid the circuit of data packet collision and method (such as to meet
The circuit and method of CSMA/CA agreement seem the circuit and method for supporting IEEE802.11 series standard specification), and implementing
Under the premise of possible, the art tool usually intellectual can realize according to the open selection equivalent elements of this specification
The present invention.In addition, circuit of the invention may include known tip assemblies, in the premise for not influencing invention exposure requirement and exploitativeness
Under, it is known that the explanation of component is by appropriate memorandum.It, can be by furthermore method of the invention can be the form of software and/or firmware
Circuit of the invention or its equivalent circuit execute.
Referring to Fig. 1, it is the schematic diagram of one embodiment of wireless communication device of the invention.The present embodiment it is wireless
100 property of can adapt to of communication device data packet is allowed to transmit, include: one receives circuit 110, a control circuit 120, passes with one
Power transmission road 130, wherein wantonly two or whole foregoing circuit can be incorporated into an integrated circuit or for individual circuit.The reception circuit
110 are used to estimating signal energy and generate multiple energy estimated values (such as CCA level), and according to the multiple energy estimated value
Multiple comparison results are generated with an at least threshold value (such as CCA threshold value), when an energy estimated value is lower than the threshold value, corresponding ratio
Relatively result allows data packet to transmit, otherwise i.e. forbidden data packet transmits, and wherein signal energy may be derived from other without traditional thread binding
Transmitted useful signal or meaningless ambient noise or any signal that receives circuit 110 and can receive are set, and
Receiving circuit 110 can allow antenna to receive outer signals, but the technical characteristic of the non-category present invention of antenna itself, it is not necessary to so include
In this wireless communication device 100, in addition, as shown in Fig. 2, an at least threshold value may include a level down to high threshold (after
Claim TH_L2H) with the high to low threshold value of a level (claiming TH_H2L afterwards), this two threshold value may be the same or different, and TH_H2L is lower than in Fig. 2
TH_L2H avoids frequent comparison result from changing whereby, and so this is only citing.
Referring to Fig. 1, the coupling of control circuit 120 receives circuit 110, is used to according to the multiple comparison result
Or its derivation information generate one transmission control signal, the derivation information be, for example, the multiple comparison result statistical information or
Operation result, for example, the derivation information includes that the cumulative number for the comparison result for allowing data packet to transmit is (rear to claim
CNT0 represents the cumulative number of the energy estimated value lower than the threshold value) it is accumulative with the comparison result of forbidden data packet transmission
The difference of number (claiming CNT1 afterwards, represent the cumulative number for being higher than the energy estimated value of the threshold value) or both.The transmission electricity
Road 130 couples the reception circuit 110 and the control circuit 120, controls one normal condition of signal designation for the transmission
Judge whether to be allowed to execute data packet transmission according to the multiple comparison result when (also can normally transmit state), and is used for
It is according to the transmission control signal judgement when described transmission control one abnormality of signal designation (that is, abnormal transmission state)
It is no to be allowed to execute data packet transmission, for example, when the multiple comparison result or its derivation information meet an implied terms
(such as CNT0 is greater than CNT1 or its difference is greater than 0, represents the majority in the multiple energy estimated value lower than described at least one
Threshold value；Or (CNT1/CNT0) is greater than or equal to a default value (such as (CNT1/CNT0)≤(55/200)=27.5%) is represented
Transmission is forbidden being that 27.5%), transmission control signal can indicate the normal condition, at this time transmitting circuit with the ratio that transmission allows
130 direct basis comparison results are to determine whether executable data packet transmission；But when the preset condition is not satisfied, transmission is controlled
Signal processed can indicate the abnormality, and transmitting circuit 130 is according to transmission control signal to determine whether executable data at this time
Packet transmits, and in the present embodiment, during transmitting abnormality described in control signal designation, transmitting circuit 130 will be ignored aforementioned
Comparison result and the transmission of diameter row, until transmission controls normal condition described in signal designation；And in an alternative em bodiment, it is transmitting
During controlling abnormality described in signal designation, transmitting circuit 130 will be transmitted in a default time or transmission times internal diameter row,
And after the preset time or number meet, according to the comparison result or its derivation information and transmission control signal after resetting
To determine whether be allowed to execute data packet transmission, it is more implement variation can voluntarily be deduced by this field personage according to its demand and
?.
Referring to Fig. 3, it is the schematic diagram of one embodiment of the reception circuit 110 of Fig. 1, as shown, receiving circuit
110 include an energy estimation circuit 112；One comparison circuit 114；An and statistical circuit 116.Energy estimation circuit 112 is used to
Generate aforesaid plurality of energy estimated value.The e.g. measuring energy CCA of comparison circuit 114 (Energy Detection CCA,
EDCCA) circuit is used to generate aforesaid plurality of comparison result according to the energy estimated value and at least one aforementioned threshold value.System
Counting circuit 116 is, for example, that a noise statistics estimate (Noise Histogram Measurement, NHM) circuit, is used to foundation
The multiple energy estimated value and at least one threshold value generate same comparison result or directly receive produced by comparison circuit 114
Comparison result, then according to the comparison result generate a statistical information (count value CNT0 and CNT1 or two are taken off before such as
The difference of person), therefore, control circuit 130 can generate transmission control signal according to the statistical information as before.It please infuse
Meaning, above-mentioned energy estimation circuit 112, wantonly the two of comparison circuit 114 and statistical circuit 116 or all in one can be incorporated into implementation
Rise or be Individual cells.
Referring to Fig. 4, it is the schematic diagram of another embodiment of the wireless communication device of the present invention.The present embodiment can fit
The threshold value (such as aforementioned TH_H2L threshold value or other CCA threshold values) of data packet transmission is adjusted, answering property more particularly to reduce
Judge whether data packet transmission is still prohibited after outer signals interference, and then decides whether to relax the threshold of the data packet transmission
Value, as shown in figure 4, wireless communication device 400 includes: a control circuit 410 and one receives circuit 420.The control circuit 410
For carrying out gain control to reduce (or even exclusion) outer signals interference, more expressly say, a radio circuit is via antenna
After receiving the outer signals, the outer signals can be suitably adjusted using a gain adjustment circuit (such as a gain table)
(such as the intensity xdBm (such as -76dBm) of practical outer signals is adjusted to ydBm (such as 2dBm), wherein y is greater than x, adjustment
Amplitude is depending on the design of actual circuit) so that the baseband circuit (including an analog-to-digital converter) of rear end can be at it
The processing outer signals in resolution capabilities, and control circuit 410 is for controlling the gain adjustment circuit, to reduce
The gain (such as the y value for reducing aforementioned ydBm) of the outer signals, and the baseband circuit of expected rear end under normal circumstances can
Determine that the intensity of the outer signals is lower than the threshold value of aforementioned data packet transmission.It is described to receive the reception that circuit 420 is, for example, Fig. 1
Circuit 110 or its equivalent circuit may include above-mentioned radio circuit and baseband circuit, be used to reduce institute in the control circuit 410
State outer signals interference after estimate survivor energy and generate an energy estimated value, and according to the energy estimated value with it is described
The threshold value of data packet transmission generates a comparison result, it is normal for, since the gain of outer signals has been pressed down by control circuit 410
System, comparison result should show threshold value (indicate data packet transmission be allowed to) of the energy estimated value lower than data packet transmission, if but than
Relatively result points out that energy estimated value is higher than the threshold value (indicating that data packet transmission is not allowed to) of data packet transmission, represents current data
Whether the possible too low and indistinguishable signal of the threshold value of packet transmission will cause interference, and (reason may be the resolution ratio energy of back-end circuit
Power is lower than expection because of the relationships such as design or processing procedure), therefore control circuit 410 can relax according to comparison result or its derivation information
The threshold value of (being turned up) described data packet transmission, until comparison result points out data packet in the case where reducing outer signals interference
Transmission is allowed to.Note that the action opportunity of the embodiment of Fig. 4 usually when wireless communication device 400 starts or when resetting, and
The present embodiment can stop adjusting after completing adjusting thresholds, when its demand of right this field personage Ke Yi carrys out the planning implementation present invention
Machine and number.
Fig. 5 a is please referred to, is the schematic diagram of another embodiment of wireless communication device of the invention, the embodiment
Equally adjust to adapting to property the threshold value (such as aforementioned TH_H2L threshold value or other CCA threshold values) of data packet transmission.As schemed
Show, wireless communication device 500 includes: one receives circuit 510 and a control circuit 520.The reception circuit 510 is, for example, Fig. 1
Reception circuit 110 or its equivalent circuit, for estimating signal energy and generate multiple energy estimated values, and according to the multiple
Energy estimated value and the threshold value of the data packet transmission generate multiple comparison results.The control circuit 520 is then used in described
After N number of display data packet transmission in multiple comparison results is not allowed to, relax the threshold value of the data packet transmission, wherein N is
Positive integer greater than 1, for example, control circuit 520 can the multiple comparison result of direct basis or its derivation information (such as
Aforementioned CNT0 and CNT1 statistical value) to determine whether the comparison result of more than half shows that data packet transmission is not allowed to, if
The threshold value for then relaxing the data packet transmission, until more than half comparison results shows that data packet transmission is allowed to；Separately for example,
As shown in Figure 5 b, wireless communication device 500 further includes a transmitting circuit 530, includes a MAC layer (Media
Access Control Layer, MAC) circuit 532 and a physical layer (Physical Layer, PHY) circuit 534, wherein matchmaker
Body MAC layer circuit 532 is used to according to the multiple comparison result multiple data packets of trial output to physical layer circuit 534,
And count the multiple data packet and successfully export to the number of physical layer circuit 534, a count results are generated accordingly, more expressly
It says, when comparison result points out threshold value (indicate data packet transmission be allowed to) of the energy estimated value lower than data packet transmission, media are visited
Ask control layer circuit 532 can in successfully one or more data packets are exported to physical layer circuit 534 in a predetermined time, and by this
Successful transmissions are reflected in count results, whereby, control circuit 520 can according to the count results or its derivation information (such as
Whether the count results are less than the information of the half of the multiple data packet) know whether N in the multiple comparison result
A display data packet transmission is not allowed to, and then decides whether to relax the threshold value of data packet transmission.It note that above-mentioned multiple data
The sum of packet can predetermine, and the multiple data packet is beacon (Beacon) data packet (if the nothing in this present embodiment
Line communication device 500 plays the part of the role of radio base station), detection require (Probe Request) data packet (if the channel radio
T unit 500 plays the part of the role of wireless network card), invalid (Null) data packet or data packet.It separately note that the implementation of Fig. 5
The action opportunity of example completes the present embodiment after adjusting thresholds equally when wireless communication device 500 starts or when resetting
Stop adjustment, its demand planning of right this field personage Ke Yi implements opportunity and the number of the present invention.Note that again Fig. 5 a, 5b with
The embodiment of Fig. 4 can select an execution, so because the embodiment does not collide, so the limitation not to the present invention.
In addition to device inventions shown in FIG. 1, the present invention also proposes a kind of wireless communications method, is the wireless communication by Fig. 1
Device 100 or its equivalent device execute.As shown in fig. 6, one embodiment of the method comprises the steps of
Step S610: estimating signal energy is to generate multiple energy estimated values.This step can be by the reception circuit 110 of Fig. 1
Or its equivalent circuit executes.
Step S620: multiple comparison results are generated according to the multiple energy estimated value and at least one threshold value.This step
It can be executed by the reception circuit 110 or its equivalent circuit of Fig. 1.
Step S630: a transmission control signal is generated according to the multiple comparison result or its derivation information.This step can
It is executed by the control circuit 120 or its equivalent circuit of Fig. 1.
Step S640: judge when the transmission controls one normal condition of signal designation according to the multiple comparison result
Whether it is allowed to execute data packet transmission, and is controlled when the transmission controls one abnormality of signal designation according to the transmission
Signal judges whether to be allowed to execute data packet transmission.This step can be held by the transmitting circuit 130 or its equivalent circuit of Fig. 1
Row.
Since one skilled in the art can understand the present embodiment by the embodiment and its related description of Fig. 1
Details and variation, more particularly, the embodiment and its subordinate technical characteristic of Fig. 1 can rationally be applied to this, therefore, in not shadow
Under the premise of the exposure requirement and exploitativeness that ring the present embodiment, repeats and the explanation of redundancy gives memorandum herein.
In addition, the present invention is it is also proposed that a kind of wireless communications method, is by the wireless of Fig. 4 in addition to device inventions shown in Fig. 4
Communication device 400 or its equivalent circuit execute.As shown in fig. 7, one embodiment of the method comprises the steps of
Step S710: gain control is executed to reduce outer signals interference.This step can be by the control circuit 410 of Fig. 4
Or its equivalent circuit executes.
Step S720: after reducing the outer signals interference, estimating signal energy simultaneously generates an energy estimated value.This
Step can be executed by the reception circuit 420 or its equivalent circuit of Fig. 4.
Step S730: the threshold value transmitted according to the energy estimated value and a data packet generates a comparison result.This step
It can be executed by the reception circuit 420 or its equivalent circuit of Fig. 4.
Step S740: if the comparison result points out data packet, transmission is not allowed to, and relaxes the threshold of the data packet transmission
Value.This step can be executed by the control circuit 410 or its equivalent circuit of Fig. 4.
Similarly, this is understood since one skilled in the art can pass through embodiment and its related description of Fig. 4
The details and variation of embodiment, more particularly, the embodiment and its subordinate technical characteristic of Fig. 4 can rationally be applied to this, because
This repeats under the premise of not influencing the exposure requirement and exploitativeness of the present embodiment and the explanation of redundancy gives memorandum herein.
In addition, the present invention separately proposes a kind of wireless communications method, is by Fig. 5 a in addition to the device inventions shown in Fig. 5 a, the 5b
5b wireless communication device or its equivalent device execute.As shown in figure 8, one embodiment of the method includes following step
It is rapid:
Step S810: estimating signal energy simultaneously generates multiple energy estimated values.This step can be by the reception of Fig. 5 a, 5b
Circuit 510 or its equivalent circuit execute.
Step S820: the threshold value transmitted according to the multiple energy estimated value and a data packet generates multiple comparison results.
This step can be executed by Fig. 5 a, the reception circuit 510 of 5b or its equivalent circuit.
Step S830: show that data packet transmission is not allowed in N number of (for example, at least half) of the multiple comparison result
Afterwards, relax the threshold value of the data packet transmission.This step can be by the control circuit 520 of Fig. 5 a or the control circuit 520 of Fig. 5 b
Cooperation with transmitting circuit 530 executes.
Similarly, since one skilled in the art can come according to Fig. 5 a, the embodiment of 5b and its related description
The details and variation of the present embodiment are solved, more particularly, Fig. 5 a, the embodiment of 5b and its subordinate technical characteristic can be applied rationally
In this, therefore, under the premise of not influencing the exposure requirement and exploitativeness of the present embodiment, repeats and the explanation of redundancy is given herein
With memorandum.
It is taken off in embodiment before note that, the transmission of Enable/Disable data packet refers to the media in Enable/Disable transmitting circuit
Data packet is exported and gives physical layer circuit (PHY) by MAC layer circuit (MAC), and so this is only citing, this field personage Ke Yi
What stage Enable/Disable data packet transmission disclosure of the invention and its demand are decided by.Taking off each embodiment before separately note that includes
One or more technical characteristics, in be embodied as it is possible under the premise of, the disclosure of the art personage Ke Yi present invention and from
The demand of body selectively implements the part or all of technical characteristic of any embodiment, or selectively implements multiple embodiments
Part or all of technical characteristic combination, increase implement elasticity of the invention whereby.
In conclusion the wireless communication device of the present invention allows data packet to transmit or adjust number with the method property of can adapt to
According to the threshold value of packet transmission, whereby in response to noisy environment and/or the influence of inside/ambient signal, and then the benefits of being wirelessly transferred is maintained
It can or avoid its intolerable degradation.
Although embodiments of the present invention are as described above, however the embodiment not is used to limit the present invention, this technology
Field tool usually intellectual can express according to the present invention or implicit content imposes variation to the technical characteristic of the present invention, all
This many variations may belong to the sought patent protection scope of the present invention, in other words, the scope of patent protection palpus of the present invention
Subject to the claim institute defender of this specification.
Claims (11)
1. a kind of wireless communication device allows data packet to transmit to the property of can adapt to, includes:
One receives circuit, for estimating signal energy and generates multiple energy estimated values, and according to the multiple energy estimated value
Multiple comparison results are generated at least one threshold value；
One control circuit couples the reception circuit, is used to generate a biography according to the multiple comparison result or its derivation information
Send control signal；And
One transmitting circuit couples the reception circuit and the control circuit, normal for transmission control signal designation one
Judge whether to be allowed to execute data packet transmission according to the multiple comparison result when state, and controls signal for the transmission
It indicates to judge whether to be allowed to execute data packet transmission according to the transmission control signal when abnormality.
2. wireless communication device according to claim 1, wherein when the multiple comparison result or its derivation information are shown
It is abnormal described in the transmission control signal designation when majority in the multiple energy estimated value is higher than at least one described threshold value
State.
3. wireless communication device according to claim 2, wherein at least one described threshold value includes a level down to high threshold
Value and the high to low threshold value of a level, and the level is different from the level up to Low threshold down to high threshold.
4. wireless communication device according to claim 3, wherein the level is higher than the level up to down to high threshold
Low threshold.
5. wireless communication device according to claim 1, wherein the reception circuit includes:
One energy estimation circuit, for generating the multiple energy estimated value；
One comparison circuit, for generating the multiple comparison result；And
One statistical circuit is used to generate a statistical information according to the multiple comparison result,
Wherein the control circuit, which is used to generate the transmission according to the statistical information, controls signal.
6. wireless communication device according to claim 1, wherein when abnormality described in transmission control signal designation,
The transmitting circuit ignores the multiple comparison result.
7. a kind of wireless communications method is to be executed by a wireless communication device, the property of can adapt to data packet is allowed to transmit, packet
Containing the following steps:
Estimating signal energy is generated with generating multiple energy estimated values according to the multiple energy estimated value and an at least threshold value
Multiple comparison results；
A transmission control signal is generated according to the multiple comparison result or its derivation information；And
Judge whether to be allowed to execute according to the multiple comparison result when the transmission controls one normal condition of signal designation
Data packet transmission, and in the transmission control one abnormality of signal designation when according to the transmission control signal judge whether by
Allow to execute data packet transmission.
8. wireless communications method according to claim 7, wherein when the multiple comparison result or its derivation information are shown
It is abnormal described in the transmission control signal designation when majority in the multiple energy estimated value is higher than an at least threshold value
State.
9. wireless communications method according to claim 8, wherein an at least threshold value includes a level down to high threshold
With the high to low threshold value of a level, and the level is different from the level up to Low threshold down to high threshold.
10. wireless communications method according to claim 7, further includes:
A statistical information is generated according to the multiple comparison result,
The step of wherein generating the transmission control signal includes: generating the transmission control signal according to the statistical information.
11. wireless communications method according to claim 7, wherein abnormality described in transmission control signal designation
When, the multiple comparison result is ignored.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110875754B (en) * | 2018-08-29 | 2021-08-27 | 瑞昱新加坡有限公司 | Wireless communication circuit capable of improving data transmission efficiency |
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| CN105323778A (en) | 2016-02-10 |
| CN109525998B (en) | 2022-05-17 |
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