CN105323778A - Wireless communication apparatus and method - Google Patents
Wireless communication apparatus and method Download PDFInfo
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- CN105323778A CN105323778A CN201410282783.7A CN201410282783A CN105323778A CN 105323778 A CN105323778 A CN 105323778A CN 201410282783 A CN201410282783 A CN 201410282783A CN 105323778 A CN105323778 A CN 105323778A
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Abstract
The present invention discloses a wireless communication apparatus and method, and the wireless communication apparatus and method can adaptively allow data packet transmission or adjust a data packet transmission threshold. An embodiment of the wireless communication apparatus includes: a receiving circuit, which is used to estimate signal energy and generate a plurality of energy estimated values, and generates a plurality of comparative results according to the energy estimated values and at least one threshold; a control circuit, which is coupled to the receiving circuit and generates a transmission control signal according to the comparative results or the derivation information; a transmission circuit, which is coupled to the receiving circuit and the control circuit, is used to judge whether the data packet transmission is allowed to execute or not according to the comparative results when the transmission control signal indicates the normal state, and is used to judge whether the data packet transmission is allowed to execute or not according to the transmission control signal when the transmission control signal indicates the abnormal state.
Description
Technical field
The invention relates to radio communication device and method, especially about the radio communication device of threshold value and the method that can allow data packet transmission or adjustment data packet transmission adaptively.
Background technology
Typically, the wireless device wireless device of 802.11 standard criterions (such as meet) can via one of them of one or more predetermined channel to transmit packet.When described wireless device transmissions packet, if another wireless device transmits packet via same channel, the packet of these two wireless devices can disturb mutually, and the data packet transmission of the failure of the data packet transmission of arbitrary wireless device or two wireless devices may be caused all failed.Above-mentioned interference problem is called data packet collision (PacketCollision).
In order to avoid data packet collision, the intrasystem multiple wireless device of consolidated network can adopt the agreement with collision detection or collision-avoidance mechanism, such as tool collides carrier detect multiple access (CarrierSenseMultipleAccesswithCollisionAvoidance, the CSMA/CA) agreement avoided.For example, in meeting in one of CSMA/CA agreement contention-based network system (Contention-BasedNetworkSystem), once there be a wireless device obtain conveyer meeting and start to transmit packet under competition mechanism, other wireless device competing for identical traffic chance must suspend transmission procedure (such as (BackoffCounting) program reciprocal or packet is delivered to the program of physical layer circuit by MAC layer circuit) in the transmission period indicated by the wireless device of winning, and avoids data packet collision by this.
But, if other wireless device above-mentioned suspends transmission procedure because an intensity is faint to causing the signal of interference, this time-out can not bring any benefit, only can waste the throughput (Throughput) of Internet Transmission, therefore, one obviously has it necessary with the benchmark determining whether suspending transmission.Say more expressly, carry out in the network system of same protocol (such as CSAM agreement) in one, multiple wireless device may share same transmission channel, now arbitrary wireless device (rear title censures device) can listen in this channel the signal whether having other wireless device to transmit, if described denotion device receives the signal of other device, can by the intensity of received signal and a default threshold (such as one idle clear channel assessment (CCA) (ClearChannelAssessment, CCA) threshold value, usually defined or specification by above-mentioned agreement) compare, if comparative result shows the intensity of this Received signal strength lower than described predetermined threshold value, this Received signal strength may be noise or insignificant signal, simultaneously, censure device and just described channel can be considered as the free time, and data packet transmission or other step that could perform when channel idle can be carried out, relative, if comparative result shows the intensity of this Received signal strength higher than described predetermined threshold value, this Received signal strength need be regarded as useful signal, now, censures device and just need suspend its transmission procedure in the transmission period indicated by described Received signal strength.
Through aforesaid way, wireless device can avoid data packet collision.But in some cases, suspend transmission procedure but to may not be certain to be suitable decision.For example, if a wireless device is in the environment that is full of noise (Noisy), transmission procedure may be suspended constantly or in most time because of noise effect, in other words, higher than the predetermined threshold value of itself, this wireless device usually may think that transmission channel is busy because of noise intensity, and then suspend transmission procedure for a long time or continually, make transmission usefulness unevident.In addition, if a wireless device is because of the processing procedure of itself, the impact of design or adjacent perimeter device and the interference signal (it may not be the signal of wireless device) that receives higher than default threshold, also therefore can suspend transmission procedure for a long time or frequently, cause the transmission usefulness that itself cannot reach expection.
In view of above-mentioned, this area needs a kind of wireless communication technology that can affect in response to noisy environment and/or inside/ambient signal, maintains the usefulness of wireless transmission by this or avoids its intolerable degradation.
Summary of the invention
One object of the present invention is to propose radio communication device and method, to solve the problem of prior art.
The present invention proposes a kind of radio communication device, can allow data packet transmission adaptively.An embodiment of described radio communication device comprises: a receiving circuit, is used for estimating signal energy produce multiple energy estimated value, and produces multiple comparative result according to described multiple energy estimated value and at least one threshold value; One control circuit, couples described receiving circuit, is used for producing a transfer control signal according to described multiple comparative result or its derivation information; And a transfer circuit, couple described receiving circuit and described control circuit, for judging whether to be allowed to perform data packet transmission according to described multiple comparative result during described transfer control signal designation one normal condition, and for judging whether to be allowed to perform data packet transmission according to described transfer control signal during described transfer control signal designation one abnormality.
The present invention separately proposes a kind of radio communication device, can adjust the threshold value of a data packet transmission adaptively.An embodiment of described radio communication device comprises: a control circuit, is used for carrying out gain and controls to reduce an outer signals interference; And a receiving circuit, be used for after described control circuit reduces the interference of described outer signals, estimating survivor energy and producing an energy estimated value, and produce a comparative result according to the threshold value of described energy estimated value and described data packet transmission, if wherein described comparative result points out that data packet transmission is not allowed to, described control circuit relaxes the threshold value of described data packet transmission.
The present invention also proposes a kind of radio communication device, can adjust the threshold value of a data packet transmission adaptively.An embodiment of described radio communication device comprises: a receiving circuit, is used for estimating signal energy produce multiple energy estimated value, and produces multiple comparative result according to the threshold value of described multiple energy estimated value and described data packet transmission; And a control circuit, after the N number of display data packet transmission be used in described multiple comparative result is not allowed to, relax the threshold value of described data packet transmission, wherein N be greater than 1 positive integer.
In addition, the present invention proposes a kind of wireless communications method accordingly, is to be performed by radio communication device of the present invention or its equivalent device, can allow data packet transmission adaptively.An embodiment of described method comprises the following step: estimating signal energy is to produce multiple energy estimated value; Multiple comparative result is produced according to described multiple energy estimated value and at least one threshold value; A transfer control signal is produced according to described multiple comparative result or its derivation information; And judge whether to be allowed to perform data packet transmission according to described multiple comparative result when described transfer control signal designation one normal condition, and judge whether to be allowed to perform data packet transmission according to described transfer control signal when described transfer control signal designation one abnormality.
The present invention separately proposes a kind of wireless communications method, is performed equally by radio communication device of the present invention or its equivalent device, can adjust the threshold value of a data packet transmission adaptively.An embodiment of described method comprises the following step: perform gain and control to reduce outer signals interference; After described control circuit reduces the interference of described outer signals, estimating signal energy also produces an energy estimated value; Threshold value according to described energy estimated value and described data packet transmission produces a comparative result; And if described comparative result points out that data packet transmission is not allowed to, relax the threshold value of described data packet transmission.
The present invention also proposes a kind of wireless communications method, is to be performed by radio communication device of the present invention or its equivalent device, can adjust the threshold value of a data packet transmission adaptively.An embodiment of described method comprises the following step: estimating signal energy also produces multiple energy estimated value; Threshold value according to described multiple energy estimated value and described data packet transmission produces multiple comparative result; And after at least half display data packet transmission of described multiple comparative result is not allowed to, relax the threshold value of described data packet transmission.
Feature for the present invention, implementation and effect, be described in detail as follows do preferred embodiment with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of radio communication device of the present invention;
Fig. 2 is the graph of a relation of signal energy, energy estimated value and comparative result;
Fig. 3 is the schematic diagram of an embodiment of the receiving circuit of Fig. 1;
Fig. 4 is the schematic diagram of another embodiment of radio communication device of the present invention;
Fig. 5 a is the schematic diagram of another embodiment of radio communication device of the present invention;
Fig. 5 b is the schematic diagram of another embodiment of radio communication device of the present invention;
Fig. 6 is the schematic diagram of an embodiment of wireless communications method of the present invention;
Fig. 7 is the schematic diagram of another embodiment of wireless communications method of the present invention; And
Fig. 8 is the schematic diagram of another embodiment of wireless communications method of the present invention.
Reference numeral
100 radio communication devices
110 receiving circuits
112 energy estimation circuits
114 comparison circuits
116 statistical circuits
120 control circuits
130 transfer circuits
400 radio communication devices
410 control circuits
420 receiving circuits
500 radio communication devices
510 receiving circuits
520 control circuits
530 transfer circuits
532MAC (MAC layer circuit)
534PHY (physical layer circuit)
TH_L2H level is low to moderate high threshold
TH_H2L level is high to Low threshold
S610 estimating signal energy is to produce multiple energy estimated value
S620 produces multiple comparative result according to described multiple energy estimated value and at least one threshold value
S630 produces a transfer control signal according to described multiple comparative result or its derivation information
S640 judges whether to be allowed to perform data packet transmission according to described multiple comparative result when described transfer control signal designation one normal condition, and judges whether to be allowed to perform data packet transmission according to described transfer control signal when described transfer control signal designation one abnormality
S710 performs gain and controls to reduce outer signals interference
S720 is after the described outer signals interference of reduction, and estimating signal energy also produces an energy estimated value
S730 produces a comparative result according to the threshold value of described energy estimated value and a data packet transmission
If the described comparative result of S740 points out that data packet transmission is not allowed to, relax the threshold value of described data packet transmission
S810 estimating signal energy also produces multiple energy estimated value
S820 produces multiple comparative result according to the threshold value of described multiple energy estimated value and a data packet transmission
S830, after N number of display data packet transmission of described multiple comparative result is not allowed to, relaxes the threshold value of described data packet transmission
Embodiment
The technical terms of following description is the idiom with reference to the art, and as this specification is illustrated part term or defines, the explanation of described part term should be as the criterion with the explanation of this specification or definition.
The present invention comprises radio communication device and method, more described apparatus and method can allow the threshold value of data packet transmission or adjustment data packet transmission adaptively, maintain efficiency of transmission by this or avoid its intolerable degradation, above-mentioned threshold value is such as clear channel assessment (CCA) (ClearChannelAssessment, CCA) threshold value, so the threshold value of other type also must be adopted by the present invention under the prerequisite not affecting exploitativeness.The present invention can be used for avoiding the circuit of data packet collision and method (such as to meet circuit and the method for CSMA/CA agreement, similarly be circuit and the method for supporting IEEE802.11 series standard specification), and being embodied as under possible prerequisite, the art has knows that the knowledgeable can according to the open selection equivalent elements of this specification to realize the present invention usually.In addition, circuit of the present invention may comprise known tip assemblies, and under the prerequisite not affecting invention exposure requirement and exploitativeness, the explanation of known tip assemblies is by appropriate memorandum.Moreover method of the present invention can be the form of software and/or firmware, can perform by circuit of the present invention or its equivalent electric circuit.
Refer to Fig. 1, it is the schematic diagram of an embodiment of radio communication device of the present invention.The radio communication device 100 of the present embodiment can allow data packet transmission adaptively, comprise: receiving circuit 110, control circuit 120, with a transfer circuit 130, wherein wantonly two or all foregoing circuit can be incorporated in an integrated circuit or be individual circuit.Described receiving circuit 110 is used for estimating signal energy produce multiple energy estimated value (such as CCA level), and produce multiple comparative result according to described multiple energy estimated value and at least one threshold value (such as CCA threshold value), when an energy estimated value is lower than described threshold value, namely corresponding comparative result allows data packet transmission, otherwise i.e. forbidden data bag transmission, wherein signal energy may stem from the useful signal that other wireless device sends, or insignificant ambient noise, also or any receiving circuit 110 signal that can receive, and receiving circuit 110 can be arranged in pairs or groups, antenna is to receive outer signals, but the technical characteristic of the non-genus the present invention of antenna itself, must not be contained in this radio communication device 100, in addition, as shown in Figure 2, described at least one threshold value can comprise a level, and to be low to moderate high threshold (claiming TH_L2H afterwards) and a level high to Low threshold (claiming TH_H2L afterwards), this two threshold value may be the same or different, in Fig. 2, TH_H2L is lower than TH_L2H, comparative result is frequently avoided to change by this, so this is only citing.
Please again consult Fig. 1, described control circuit 120 couples receiving circuit 110, be used for producing a transfer control signal according to described multiple comparative result or its derivation information, described derivation information is such as statistical information or the operation result of described multiple comparative result, for example, the cumulative number that described derivation information comprises the comparative result of permission data packet transmission (claims CNT0 afterwards, representing lower than the cumulative number of the energy estimated value of described threshold value) cumulative number of comparative result that transmits with forbidden data bag (claims CNT1 afterwards, represent higher than the cumulative number of the energy estimated value of described threshold value) or the two difference.Described transfer circuit 130 couples described receiving circuit 110 and described control circuit 120, judge whether to be allowed to perform data packet transmission according to described multiple comparative result for time described transfer control signal designation one normal condition (also getting final product normal delivery status), and for judging whether to be allowed to perform data packet transmission according to described transfer control signal time described transfer control signal designation one abnormality (that is abnormal delivery status), for example, when described multiple comparative result or its derivation information meet an implied terms, (such as CNT0 is greater than CNT1 or its difference is greater than 0, the majority represented in described multiple energy estimated value is individual lower than described at least one threshold value, or (CNT1/CNT0) is more than or equal to a default value (such as (CNT1/CNT0)≤(55/200)=27.5%), representative transmission forbids that the ratio allowed with transmission is 27.5%), transfer control signal can indicate described normal condition, and now transfer circuit 130 direct basis comparative result judges whether to perform data packet transmission, but not pre-conditionedly to be satisfied when described, transfer control signal can indicate described abnormality, now transfer circuit 130 judges whether to perform data packet transmission according to transfer control signal, in the present embodiment, during abnormality described in transfer control signal designation, transfer circuit 130 will ignore aforementioned comparative result and the transmission of footpath row, until normal condition described in transfer control signal designation, and in an alternative em bodiment, during abnormality described in transfer control signal designation, transfer circuit 130 in a default time or will transmit the capable transmission of number of times internal diameter, and after described Preset Time or number of times meet, judge whether to be allowed to perform data packet transmission according to the comparative result after resetting or its derivation information and transfer control signal, more implement change and can be deduced voluntarily according to its demand by this area personage and obtain.
Refer to Fig. 3, it is the schematic diagram of an embodiment of the receiving circuit 110 of Fig. 1, and as shown in the figure, receiving circuit 110 comprises an energy estimation circuit 112; One comparison circuit 114; And a statistical circuit 116.Energy estimation circuit 112 is used for producing aforementioned multiple energy estimated value.Comparison circuit 114 is such as measuring energy CCA (EnergyDetectionCCA, an EDCCA) circuit, is used for producing aforementioned multiple comparative result according to more described energy estimated value and at least one threshold value aforementioned.Statistical circuit 116 is such as a noise statistics estimation (NoiseHistogramMeasurement, NHM) circuit, be used for producing same comparative result or the direct comparative result receiving comparison circuit 114 and produce according to described multiple energy estimated value and at least one threshold value, then a statistical information (such as before taking off count value CNT0 and CNT1 or the difference of the two) is produced according to more described comparative result, therefore, control circuit 130 just can produce transfer control signal according to described statistical information as before.Note that wantonly two of above-mentioned energy estimation circuit 112, comparison circuit 114 and statistical circuit 116 or all can combine in implementation or be Individual cells.
Refer to Fig. 4, it is the schematic diagram of another embodiment of the radio communication device of the present invention.The present embodiment can adjust the threshold value (such as aforementioned TH_H2L threshold value or other CCA threshold value) of a data packet transmission adaptively, especially can judge whether data packet transmission is still prohibited after the interference of reduction outer signals, and then determine the threshold value of whether relaxing described data packet transmission, as shown in Figure 4, radio communication device 400 comprises: control circuit 410 and a receiving circuit 420.Described control circuit 410 is used for carrying out gain and controls to disturb to reduce (even getting rid of) outer signals, say more expressly, after one radio circuit receives described outer signals via antenna, a gain adjustment circuit (such as a gain table) can be utilized suitably to adjust described outer signals and (such as the intensity xdBm (such as-76dBm) of actual outer signals to be adjusted to ydBm (such as 2dBm), wherein y is greater than x, adjusting range is depending on the design of side circuit), make the baseband circuit of rear end (comprising an analog-to-digital converter) described outer signals can be processed in its resolution capabilities, and namely control circuit 410 is used to control described gain adjustment circuit, to reduce the gain (such as reducing the y value of aforementioned ydBm) of described outer signals, and expect that the baseband circuit of rear end can judge the threshold value of the intensity of described outer signals lower than the transmission of aforementioned data bag under normal circumstances.Described receiving circuit 420 is such as receiving circuit 110 or its equivalent electric circuit of Fig. 1, above-mentioned radio circuit and baseband circuit can be comprised, be used for after described control circuit 410 reduces the interference of described outer signals, estimating survivor energy and producing an energy estimated value, and produce a comparative result according to the threshold value of described energy estimated value and described data packet transmission, normal, due to outer signals gain suppress by control circuit 410, comparative result should show the threshold value (represent data packet transmission be allowed to) of energy estimated value lower than data packet transmission, if but comparative result points out the threshold value (represent data packet transmission be not allowed to) of energy estimated value higher than data packet transmission, the threshold value representing current data packet transmission may be too low and cannot distinguish signal and whether can cause interference (reason may be the resolution capabilities of back-end circuit because of design or the relation such as processing procedure lower than expecting), therefore control circuit 410 can relax the threshold value of (namely heightening) described data packet transmission according to comparative result or its derivation information, until comparative result points out that data packet transmission is allowed to when reducing outer signals interference.Note that the action opportunity of the embodiment of Fig. 4 is usually when radio communication device 400 starts or when resetting, and after completing adjusting thresholds, the present embodiment can stop adjustment, right this area its demand of personage Ke Yi comes opportunity and the number of times of planning implementation the present invention.
Refer to Fig. 5 a, it is the schematic diagram of another embodiment of radio communication device of the present invention, and described embodiment can adjust the threshold value (such as aforementioned TH_H2L threshold value or other CCA threshold value) of a data packet transmission equally adaptively.As shown in the figure, radio communication device 500 comprises: receiving circuit 510 and a control circuit 520.Described receiving circuit 510 is such as receiving circuit 110 or its equivalent electric circuit of Fig. 1, is used for estimating signal energy produce multiple energy estimated value, and produces multiple comparative result according to the threshold value of described multiple energy estimated value and described data packet transmission.After the described control circuit 520 N number of display data packet transmission be used in described multiple comparative result is not allowed to, relax the threshold value of described data packet transmission, wherein N be greater than 1 positive integer, for example, control circuit 520 multiple comparative result described in direct basis or its derivation information (such as aforementioned CNT0 and CNT1 statistical value) can judge whether that comparative result display data packet transmission over half is not allowed to, if then relax the threshold value of described data packet transmission, until more than half comparative result display data packet transmission is allowed to, separately for example, as shown in Figure 5 b, radio communication device 500 comprises a transfer circuit 530 further, comprise a MAC layer (MediaAccessControlLayer, MAC) circuit 532 and a physical layer (PhysicalLayer, PHY) circuit 534, wherein MAC layer circuit 532 is used for attempting exporting multiple packet to physical layer circuit 534 according to described multiple comparative result, and count the number that described multiple packet successfully exports physical layer circuit 534 to, produce a count results according to this, say more expressly, when comparative result points out the threshold value (represent data packet transmission be allowed to) of energy estimated value lower than data packet transmission, MAC layer circuit 532 successfully can export one or more packet to physical layer circuit 534 within a scheduled time, and this Successful transmissions is reflected in count results, by this, according to described count results or its derivation information (whether such as described count results is less than the information of the half of described multiple packet), control circuit 520 can learn that the N number of display data packet transmission in whether described multiple comparative result is not allowed to, and then determine the threshold value of whether relaxing data packet transmission.Please note, the sum of above-mentioned multiple packet can predetermine, and described multiple data are wrapped in the present embodiment as beacon (Beacon) packet (if described radio communication device 500 plays the part of the role of radio base station), detection require (ProbeRequest) packet (if described radio communication device 500 plays the part of the role of wireless network card), invalid (Null) packet or data packet.Separately note that the action opportunity of the embodiment of Fig. 5 is equally when radio communication device 500 starts or when resetting, and after completing adjusting thresholds, the present embodiment can stop adjustment, right this area its demand planning of personage Ke Yi implements opportunity and the number of times of the present invention.Note that the embodiment of Fig. 5 a, 5b and Fig. 4 can select an execution again, so because more described embodiment is not conflicted mutually, so the restriction not to the present invention.
Except the device invention shown in Fig. 1, the present invention also proposes a kind of wireless communications method, is to be performed by the radio communication device 100 of Fig. 1 or its equivalent device.As shown in Figure 6, an embodiment of described method comprises the following step:
StepS610: estimating signal energy is to produce multiple energy estimated value.This step can be performed by the receiving circuit 110 of Fig. 1 or its equivalent electric circuit.
StepS620: produce multiple comparative result according to described multiple energy estimated value and at least one threshold value.This step can be performed by the receiving circuit 110 of Fig. 1 or its equivalent electric circuit.
StepS630: produce a transfer control signal according to described multiple comparative result or its derivation information.This step can be performed by the control circuit 120 of Fig. 1 or its equivalent electric circuit.
StepS640: judge whether to be allowed to perform data packet transmission according to described multiple comparative result when described transfer control signal designation one normal condition, and judge whether to be allowed to perform data packet transmission according to described transfer control signal when described transfer control signal designation one abnormality.This step can be performed by the transfer circuit 130 of Fig. 1 or its equivalent electric circuit.
Usually know that the knowledgeable can by the embodiment of Fig. 1 and related description thereof to understand details and the change of the present embodiment because this area has, more particularly, embodiment and the subordinate technical characteristic thereof of Fig. 1 all rationally can be applied to this, therefore, under the prerequisite of the exposure requirement and exploitativeness that do not affect the present embodiment, the explanation of repetition and redundancy gives memorandum at this.
In addition, except the device invention shown in Fig. 4, the present invention also proposes a kind of wireless communications method, is to be performed by the radio communication device 400 of Fig. 4 or its equivalent electric circuit.As shown in Figure 7, an embodiment of described method comprises the following step:
StepS710: perform gain and control to reduce outer signals interference.This step can perform by the control circuit 410 of Fig. 4 or its equivalent electric circuit.
StepS720: after the described outer signals interference of reduction, estimating signal energy also produces an energy estimated value.This step can perform by the receiving circuit 420 of Fig. 4 or its equivalent electric circuit.
StepS730: the threshold value according to described energy estimated value and a data packet transmission produces a comparative result.This step can perform by the receiving circuit 420 of Fig. 4 or its equivalent electric circuit.
StepS740: if described comparative result points out that data packet transmission is not allowed to, relax the threshold value of described data packet transmission.This step can perform by the control circuit 410 of Fig. 4 or its equivalent electric circuit.
Similarly, usually know that the knowledgeable can pass through the embodiment of Fig. 4 and related description thereof to understand details and the change of the present embodiment because this area has, more particularly, embodiment and the subordinate technical characteristic thereof of Fig. 4 all rationally can be applied to this, therefore, under the prerequisite of the exposure requirement and exploitativeness that do not affect the present embodiment, the explanation of repetition and redundancy gives memorandum at this.
In addition, except Fig. 5 a, 5b shownschematically device invention, the present invention separately proposes a kind of wireless communications method, is to be performed by the radio communication device of Fig. 5 a or 5b or its equivalent device.As shown in Figure 8, an embodiment of described method comprises the following step:
StepS810: estimating signal energy also produces multiple energy estimated value.This step can perform by the receiving circuit 510 of Fig. 5 a, 5b or its equivalent electric circuit.
StepS820: the threshold value according to described multiple energy estimated value and a data packet transmission produces multiple comparative result.This step can perform by the receiving circuit 510 of Fig. 5 a, 5b or its equivalent electric circuit.
StepS830: show after data packet transmission is not allowed in N number of (such as at least half) of described multiple comparative result, relax the threshold value of described data packet transmission.This step can perform with the cooperation of transfer circuit 530 by the control circuit 520 of the control circuit 520 of Fig. 5 a or Fig. 5 b.
Similarly, usually know that the knowledgeable can according to the embodiment of Fig. 5 a, 5b and related description thereof to understand details and the change of the present embodiment because this area has, more particularly, embodiment and the subordinate technical characteristic thereof of Fig. 5 a, 5b all rationally can be applied to this, therefore, under the prerequisite of the exposure requirement and exploitativeness that do not affect the present embodiment, the explanation of repetition and redundancy gives memorandum at this.
Please note, before take off in embodiment, Enable/Disable data packet transmission refers to that packet is exported to physical layer circuit (PHY) by the MAC layer circuit (MAC) in Enable/Disable transfer circuit, so this is only citing, and what stage Enable/Disable data packet transmission is personage Ke Yi open and demand of the present invention in this area be decided by.Separately please note, before take off each embodiment and comprise one or more technical characteristic, under being embodied as possible prerequisite, the disclosure of the art personage Ke Yi the present invention and the demand of self optionally implement the part or all of technical characteristic of any embodiment, or optionally implement the combination of the part or all of technical characteristic of multiple embodiment, increase by this and implement elasticity of the present invention.
In sum, the radio communication device of the present invention and method can allow data packet transmission adaptively or adjust the threshold value of data packet transmission, by this in response to the impact of noisy environment and/or inside/ambient signal, and then maintain the usefulness of wireless transmission or avoid its intolerable degradation.
Although the embodiment of the present invention is described above; but more described embodiment is not used for limiting the present invention; the art have usually know the knowledgeable can according to the present invention express or the technical characteristic of implicit content to the present invention imposes change; all this kind change all may belong to the sought patent protection category of the present invention; in other words, the scope of patent protection of the present invention must be as the criterion depending on the claim person of defining of this specification.
Claims (20)
1. a radio communication device, can allow data packet transmission adaptively, comprise:
One receiving circuit, is used for estimating signal energy produce multiple energy estimated value, and produces multiple comparative result according to described multiple energy estimated value and at least one threshold value;
One control circuit, couples described receiving circuit, is used for producing a transfer control signal according to described multiple comparative result or its derivation information; And
One transfer circuit, couple described receiving circuit and described control circuit, for judging whether to be allowed to perform data packet transmission according to described multiple comparative result during described transfer control signal designation one normal condition, and for judging whether to be allowed to perform data packet transmission according to described transfer control signal during described transfer control signal designation one abnormality.
2. radio communication device according to claim 1, wherein when the majority in described multiple comparative result or the described multiple energy estimated value of its derivation information display is higher than at least one threshold value described, abnormality described in described transfer control signal designation.
3. radio communication device according to claim 2, at least one threshold value wherein said comprises a level and is low to moderate high threshold and a level is high to Low threshold, and described level to be low to moderate high threshold high different to Low threshold from described level.
4. radio communication device according to claim 3, it is high to Low threshold higher than described level that wherein said level is low to moderate high threshold.
5. radio communication device according to claim 1, wherein said receiving circuit comprises:
One energy estimation circuit, is used for producing described multiple energy estimated value;
One comparison circuit, is used for producing described multiple comparative result; And
One statistical circuit, is used for producing a statistical information according to described multiple comparative result,
Wherein said control circuit is used for producing described transfer control signal according to described statistical information.
6. radio communication device according to claim 1, described in wherein said transfer control signal designation during abnormality, described transfer circuit ignores described multiple comparative result.
7. a radio communication device, can adjust the threshold value of a data packet transmission adaptively, comprise:
One control circuit, is used for carrying out gain and controls to reduce an outer signals interference; And
One receiving circuit, is used for after described control circuit reduces the interference of described outer signals, estimating survivor energy and producing an energy estimated value, and produces a comparative result according to the threshold value of described energy estimated value and described data packet transmission,
If wherein described comparative result points out that data packet transmission is not allowed to, described control circuit relaxes the threshold value of described data packet transmission.
8. radio communication device according to claim 7, wherein said control circuit relax described data packet transmission threshold value until when reducing the interference of described outer signals described comparative result point out that data packet transmission is allowed to.
9. a radio communication device, can adjust the threshold value of a data packet transmission adaptively, comprise:
One receiving circuit, is used for estimating signal energy produce multiple energy estimated value, and produces multiple comparative result according to the threshold value of described multiple energy estimated value and described data packet transmission; And
One control circuit, after the N number of display data packet transmission be used in described multiple comparative result is not allowed to, relaxes the threshold value of described data packet transmission, wherein N be greater than 1 positive integer.
10. radio communication device according to claim 9, it comprises a transfer circuit further, and described transfer circuit comprises:
One MAC layer circuit, is used for attempting exporting multiple packet to physical layer circuit according to described multiple comparative result, and counts the number that described multiple packet successfully exports described physical layer circuit to, produce a count results according to this,
According to described count results or its derivation information, wherein said control circuit learns that the N number of display data packet transmission in whether described multiple comparative result is not allowed to.
11. radio communication devices according to claim 10, wherein said MAC layer circuit count described multiple packet within a scheduled time successfully exports the number of described physical layer circuit to, and the number of described multiple packet predetermines.
12. 1 kinds of wireless communications methods, are performed by a radio communication device, can allow data packet transmission adaptively, comprise the following step:
Estimating signal energy to produce multiple energy estimated value, and produces multiple comparative result according to described multiple energy estimated value and at least one threshold value;
A transfer control signal is produced according to described multiple comparative result or its derivation information; And
Judge whether to be allowed to perform data packet transmission according to described multiple comparative result when described transfer control signal designation one normal condition, and judge whether to be allowed to perform data packet transmission according to described transfer control signal when described transfer control signal designation one abnormality.
13. wireless communications methods according to claim 12, wherein when the majority in described multiple comparative result or the described multiple energy estimated value of its derivation information display is higher than described at least one threshold value, abnormality described in described transfer control signal designation.
14. wireless communications methods according to claim 13, wherein said at least one threshold value comprises a level and is low to moderate high threshold and a level is high to Low threshold, and described level to be low to moderate high threshold high different to Low threshold from described level.
15. wireless communications methods according to claim 12, comprise further:
A statistical information is produced according to described multiple comparative result,
The step wherein producing described transfer control signal comprises: produce described transfer control signal according to described statistical information.
16. wireless communications methods according to claim 12, described in wherein said transfer control signal designation during abnormality, described multiple comparative result is left in the basket.
17. 1 kinds of wireless communications methods, are performed by a radio communication device, can adjust the threshold value of a data packet transmission adaptively, comprise the following step:
Perform gain and control to reduce outer signals interference;
After the described outer signals interference of reduction, estimating signal energy also produces an energy estimated value;
Threshold value according to described energy estimated value and described data packet transmission produces a comparative result; And
If described comparative result points out that data packet transmission is not allowed to, relax the threshold value of described data packet transmission.
18. wireless communications methods according to claim 17, the step of wherein relaxing the threshold value of described data packet transmission comprises: relax the threshold value of described data packet transmission until described comparative result points out that data packet transmission is allowed to when reducing outer signals interference.
19. 1 kinds of wireless communications methods, are performed by a radio communication device, can adjust the threshold value of a data packet transmission adaptively, comprise the following step:
Estimating signal energy also produces multiple energy estimated value;
Threshold value according to described multiple energy estimated value and described data packet transmission produces multiple comparative result; And
After at least half display data packet transmission of described multiple comparative result is not allowed to, relax the threshold value of described data packet transmission.
20. wireless communications methods according to claim 19, comprise the following step further:
Attempt exporting multiple packet to physical layer circuit according to described multiple comparative result;
Count the number that described multiple packet successfully exports described physical layer circuit to, produce a count results according to this; And
Learn that at least half display data packet transmission of whether described multiple comparative result is not allowed to according to described count results or its derivation information.
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| CN109525998A (en) | 2019-03-26 |
| CN109525998B (en) | 2022-05-17 |
| CN105323778B (en) | 2018-12-11 |
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