CN104780014B - The method of wireless communication apparatus and the transmission rate group for determining wireless communication apparatus - Google Patents
The method of wireless communication apparatus and the transmission rate group for determining wireless communication apparatus Download PDFInfo
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Abstract
The invention discloses a kind of wireless communication apparatus and the method for the target transmission speed group for determining wireless communication apparatus, one of multiple transmission rates which selects the target transmission speed group to be included transmit data packet, and this method includes：Multiple candidate transport rate groups are provided；Multiple data packets are transmitted according to an initial stage transmission rate group；In the number that repeatedly transmits in a preset time, counting those data packets, and generate a statistical result；And it chooses one of those candidate transport rate groups according to the statistical result and is used as the target transmission speed group.
Description
Technical field
The present invention relates to the methods of wireless communication apparatus and the transmission rate group for determining wireless communication apparatus, especially close
The wireless communication apparatus and method of transmission rate group are adaptively selected in the situation according to communication environment.
Background technology
It is being wirelessly transferred（wireless communication）In system, often a system can transmit speed there are many a
Rate can use, and the selection of transmission rate has to consider miscellaneous situation, when receiving terminal and transmitting terminal distance farther out
When, transmission rate has to drop to until receiving terminal can accept data packet.However, when transmitting terminal and receiving terminal distance
It is close, but environmental disturbances are more or when have other wireless devices to compete this channel right to use together, transmission rate
Then higher better as possible, because for the data packet of same size, higher transmission rate, which can allow, transmits data packet
Time is more of short duration, and the wireless signal than less easily being transmitted by environmental disturbances or with other wireless devices generates interference
Or collision（collision）.Therefore, the method for an appropriate adjustment transmission rate is necessary for wireless transmitting system
's.
In wireless telecommunication system, data packet want can correctly from transmitting terminal be sent to receiving terminal sought to first it is suitable
When transmission rate, enough transimission powers and good signal quality.If both after not changing, change appropriate passes
Data packet could be correctly sent to receiving terminal by defeated rate to meet the demand of receiving terminal.In many wireless telecommunication systems
There is regulation re-transmission（retry）Mechanism use the carrier sense multichannel with confirmation signal in 802.11 specification and connect
Enter/collide to avoid（Carrier-Sense Multiple-Access,Collision Avoidance(CSMA/CA)with
Acknowledgement(ACK)）Transmission mode, that is to say, that before transmitting terminal will transmit data packet, transmitting terminal can first
It waits for a period of time and detects in air whether have other signals, if without other transmission of data packets, which is spread out of.
After data packet spreads out of, if not receiving the ACK packages that receiving terminal is returned yet after waiting for a period of time, then represent
The transmission of data packets fails, and transmitting terminal will transmit the data packet again.Receiving terminal, which does not receive the reason of data packet, to be had
It is a variety of possible, but can substantially be summarized as two major classes:The first, receiving terminal receives the signal noise ratio of the data packet
（Signal-to-Noise Ratio,SNR）It is too low, so that receiving terminal can not be accepted correctly；Second is the number to spread out of
The wireless signal for being interfered according to package or being sent out with other wireless devices collides and causes receiving terminal can not positive acknowledgement
Lower this data packet.
If the first situation, then the data packet must be transmitted by transmitting terminal with lower transmission rate, due to
Transmission rate is relatively low, in requirement of the receiving terminal for signal noise ratio also with regard to relative reduction, therefore relative to higher transmission rates
For, the possibility correctly accepted is higher；Another solution is to increase the energy of transmitting terminal, is equal to and improves receiving terminal
Signal noise ratio allows the data packet that originally can not correctly accept accurate can also receive.If but second case,
Transmission rate should not be then reduced instead, because if once reducing transmission rate, time which transmits in the air
It can elongate, the probability of collision is caused to increase.
Invention content
In view of the deficiency of prior art, of the invention one is designed to provide a kind of wireless communication apparatus and determines channel radio
The method for interrogating the transmission rate group of device, can detect environmental aspect to select preferable transmission rate.
The invention discloses a kind of method for the target transmission speed group determining a wireless communication apparatus, the wireless telecommunications
One of multiple transmission rates that device is included according to the target transmission speed group transmit data packet, this method packet
Contain：Multiple candidate transport rate groups are provided；Multiple data packets are transmitted according to an initial stage transmission rate group；In a preset time
It is interior, the number that repeatedly transmits of those data packets is counted, and generate a statistical result；And choose those according to the statistical result
One of candidate transport rate group is used as the target transmission speed group.
The present invention separately discloses a kind of wireless communication apparatus, including：One storage element, for storing multiple candidate transport speed
Rate group, each candidate transport rate group include multiple transmission rates；One high frequency transmission circuit；And an arithmetic element, coupling should
Storage element and the high frequency transmission circuit transmit multiple numbers for accessing those transmission rate groups and controlling the high frequency transmission circuit
According to package, including：One initial stage transmission rate group decision module, for choosing one of those candidate transport rate groups to make
For an initial stage transmission rate group, the wherein arithmetic element controls the high frequency transmission circuit and is somebody's turn to do according to initial stage transmission rate group transmission
The part of a little data packets；One retransmits package detecting module, and number is repeatedly transmitted for count those data packets, to generate
One statistical result；And a transmission rate group decision module, choose its of those candidate transport rate groups according to the statistical result
One of with to make a target transmission speed group, the wherein arithmetic element controls the high frequency transmission circuit and selects the object transmission fast
One of multiple transmission rates that rate group is included transmit the rest part of those data packets.
The wireless communication apparatus of the present invention can be detected at present with the method for determining the transmission rate group of wireless communication apparatus
The situation of communication environment carrys out transmission data package to choose better suited transmission rate.Compared to the prior art, nothing of the invention
Line communication device with determine wireless communication apparatus transmission rate group method can in response to the complexity of communication environment, such as
The intensity etc. of the impact severity of data packet, the transmission rate of another wireless communication apparatus and signal, to determine transmission appropriate
Rate, thus can further raising radio transmission communication quality.
Feature, implementation and effect for the present invention, hereby attached drawing being coordinated to make preferred embodiment, detailed description are as follows.
Description of the drawings
Fig. 1 is the schematic diagram of an embodiment of the wireless communication apparatus of the present invention；
Fig. 2 is the schematic diagram of an embodiment of the transmission rate group of the present invention；
Fig. 3 is the flow chart of an embodiment of the method for the transmission rate group of the decision wireless communication apparatus of the present invention；
Fig. 4 is an example of the statistical result of the transmission of data packets number of the present invention；
Fig. 5 is an example of the statistical result of the transmission of data packets number of the present invention；
Fig. 6 is the flow chart of another embodiment of the method for the transmission rate group of the decision wireless communication apparatus of the present invention；
Fig. 7 is the schematic diagram of another embodiment of the transmission rate group of the present invention；
Fig. 8 is the flow chart of another embodiment of the method for the transmission rate group of the decision wireless communication apparatus of the present invention；
Fig. 9 is the schematic diagram of an embodiment of the initial transmission rate group of the present invention；
Figure 10 is an example of the statistical result of the transmission of data packets number of the present invention；
Figure 11 is the schematic diagram of another embodiment of the transmission rate group of the present invention；
Figure 12 is an example of the statistical result of the transmission of data packets number of the present invention；
Figure 13 is an example of the statistical result of the transmission of data packets number of the present invention；
Figure 14 is the flow chart of another embodiment of the method for the transmission rate group of the decision wireless communication apparatus of the present invention；
Figure 15 is an example of the statistical result of the transmission of data packets number of the present invention；And
Figure 16 is the example after the weighted calculating of statistical result of the transmission of data packets number of the present invention.
Wherein, the reference numerals are as follows：
100,150 wireless communication apparatus
110 storage elements
120 arithmetic elements
121 initial stage transmission rate group decision modules
122 retransmit package detecting module
123 transmission rate group decision modules
124 communication quality detecting modules
125 initial transmission rate decision modules
126 ranking operation modules
127 detect decision module again
130 high frequency transmission circuits
200,700,900,1100 table
S310~S340, S610~S620, S810~S830, S1410 steps
Specific implementation mode
The idiom of technical terms reference the art of following description, as this specification has part term
Be illustrated or define, the explanation of the part term be subject to this specification explanation or definition.
The disclosure includes the method for wireless communication apparatus and the transmission rate for determining wireless communication apparatus, energy
It is enough to select preferable transmission rate in response to communication environment.Under the premise of being embodied as possible, those of ordinary skill in the art
Equivalent element or step can be selected according to the disclosure of the specification to realize the present invention, that is, the implementation of the present invention is simultaneously
The embodiment chatted after being not limited to.By the wireless communication apparatus subelement that is included of the present invention it is independent for may be known
Element, therefore under the premise of not influencing the abundant open and exploitativeness of the device inventions, illustrate below for well known elements
Details will give memorandum.In addition, the method for the transmission rate of the decision wireless communication apparatus of the present invention can be through the invention
Wireless communication apparatus or its equivalent device execute, in abundant open and exploitativeness the premise for not influencing this method invention
Under, the explanation of following methods invention will focus on step content and non-hardware.
Referring to Fig. 1, its schematic diagram for an embodiment of the wireless communication apparatus of the present invention.Wireless communication apparatus 100
Including storage element 110, arithmetic element 120 and high frequency transmission circuit 130.Storage element 110 stores multiple candidate transport rates
Group, arithmetic element 120 determines a target transmission speed group from those candidate transport rate groups, then controls high frequency transmission circuit
The 130 multiple transmission rates for being included according to target transmission speed groups are to 150 transmission data package of another wireless communication apparatus.Fortune
It can be microprocessor to calculate unit 120（Micro Control Unit,MCU）Or central processing unit（Central
Processing Unit,CPU）, in a preferred embodiment, if wireless communication apparatus 100 fills for portable mobile
It sets, such as mobile phone, tablet computer or notebook computer, then arithmetic element 120 is the processor of Portable mobile device.Operation list
Member 120 comprising initial stage transmission rate group decision module 121, retransmit package detecting module 122, transmission rate group decision module 123,
Communication quality detecting module 124, initial transmission rate decision module 125, ranking operation module 126 and again detecting determine mould
Block 127.Referring to Fig. 2, its schematic diagram for an embodiment of the transmission rate group of the present invention.Table 200 includes 4 transmission speed
Rate group T201~T204, each transmission rate group include an initial transmission rate and multiple retransmission rates.Work as wireless telecommunications
When device 100 sends a data packet for the first time, arithmetic element 120 can control high frequency transmission circuit 130 with initial transmission rate
Transmission, if sending for the first time unsuccessful, arithmetic element 120 controls high frequency transmission circuit 130 with first time retransmission rate weight again
The same data packet is newly transmitted, and so on.For example, if arithmetic element 120 chooses transmission rate group T201 conducts
Transmission rate group used at present can then be sent out when wireless communication apparatus 100 first time transmission data package with transmission rate R210
It send, if it is unsuccessful, then with retransmission rate R211, R212 ... retransfer the same data packet, replys and transmits until receiving terminal
Until success.Transmission rate recorded in table 200 is absolute transmission rate, such as R210 represents 54MHz, R211 representative
48MHz etc., and the number of retransmissions in table 200 is given for example only, and may have more number of retransmissions in implementation.
Referring to Fig. 3, it is an embodiment of the method for the transmission rate group of the decision wireless communication apparatus of the present invention
Flow chart.Please refer to Fig. 1 to fully understand the present embodiment.Multiple candidate transport rate groups are provided first（Step S310）,
Candidate transport rate group is, for example, transmission rate group shown in Fig. 2, can be stored in storage element 110.Initial stage transmits later
Rate group decision module 121 chooses one from multiple transmission rate groups of table 200 and is used as initial stage transmission rate group, such as selects
Transmission rate group T201 is taken, then high frequency transmission circuit 130 transmits multiple data packets according to transmission rate group T201（Step
S320）.121 selected initial stage transmission rate group of initial stage transmission rate group decision module must have at least one retransmission rate with
Initial transmission rate is identical.Some possible data packets once just transmit successfully during transmission, some will then be retransmitted once
It is just transmitted successfully after even more times.It retransmits package detecting module 122 and passes through high frequency transmission circuit in a preset time
130 statistical data packages repeatedly transmit number, and generate a statistical result（Step S330）.Referring to Fig. 4, it is this
One example of the statistical result of the transmission of data packets number of invention.As shown, there is 30 data packets with initial transmission speed
Rate can be successfully sent to when transmitting, and need it is primary retransmit, secondary re-transmission and the package number that retransmits three times are respectively 140,
50 and 10.Assuming that four transmission rate R210~R213 of transmission rate group T201 respectively represent high transfer rate, Gao Chuan
Defeated rate, middle transmission rate and low transmission rate, then the statistical result showed of Fig. 4 is in environment instantly, probably due to letter
Number success rate of collision when causing to transmit data packet for the first time it is not high, however retransmitting can be such that most of data seal for the first time
Packet transmits successfully, and still has the data packet of part to collide, and needs to carry out second and the re-transmission of third time could succeed.
Next, transmission rate group decision module 123 is chosen according to statistical result from the transmission rate group in table 200
One is used as high frequency transmission circuit 130 next to send target transmission speed group used in remaining data packet（Step
S340）.In this step, whether transmission rate group decision module 123 judges the data packet number transmitted with high transfer rate
More than one threshold value, for example, total data package number 70%, to determine target transmission speed group.With high transfer rate transmission
Data packet number is more than threshold value, and it is higher to represent the probability that data packet collides, by taking the statistical result of Fig. 4 as an example, with
The package number of high transfer rate transmission is 170, is more than threshold value 230x0.7=161, therefore transmission rate group decision module
The transmission rate group of the corresponding high transfer rate of 123 selections；Conversely, then selecting the transmission rate group of corresponding low transmission rate.Gao Chuan
The average value of all transmission rates of the transmission rate group of defeated rate is more than all transmission of the transmission rate group of low transmission rate
The average value of rate.By taking table 200 as an example, such as transmission rate group T201 and T202 are high transfer rate group, transmission rate group
T203 and T204 is low transmission rate group, then the average value of all transmission rates of transmission rate group T201 or T202 is more than transmission
The average value of all transmission rates of rate group T203 or T204, and transmission rate group decision module 123 chooses high transfer rate
When, when by choosing one of transmission rate group T201 and T202, and choose low transmission rate, transmission rate group will be chosen
One of T203 and T204.In this step after selected target transmission rate group, arithmetic element 120 controls high frequency transmitting-receiving
Circuit 130 continues to transmit other data packets according to target transmission speed group.Specifically, which selects
One of multiple transmission rates in the target transmission speed group continue to transmit other data packets, such as can be every
One of secondary selection can also be primary every predetermined time selection, and invention is not limited thereto；In addition, selection method
Can be random selection, can also be is selected by a preset order, and invention is not limited thereto.That is, working as wireless telecommunications
Device 100 at the beginning with 150 line of wireless communication apparatus when, first all data packets are temporarily transmitted with initial stage transmission rate group
The re-transmission situation of a part, the data packet that then foundation has transmitted determines target transmission speed group again, next reuses mesh
Mark transmission rate group transmits remaining data packet.
If the statistical result of step S330 is less than door as shown in figure 5, with the package number of high transfer rate transmission for 50
Threshold value 161 represents communication environment situation at that time as the insufficient situation of signal noise ratio, it may be possible to wireless communication apparatus 100
With wireless communication apparatus 150 apart from too far caused, therefore the selection of transmission rate group decision module 123 corresponds in step S340
The transmission rate group of low transmission rate, such as selection transmission rate group T203, correspond to the environmental aspect transmitted at a distance, and pass
Defeated rate R230~R233 respectively represents high transfer rate, middle transmission rate, low transmission rate and low transmission rate.By making
With the transmission rate group for being easier reduction transmission rate, data packet is easier to be sent to the equipment of distal end.
Referring to Fig. 6, its another embodiment for the method for the transmission rate group of the decision wireless communication apparatus of the present invention
Flow chart.Embodiment adds following steps：
Step S610：The communication quality of 124 detecting wireless communication device 100 of communication quality detecting module, and generate communication
Quality detecting result.Wireless communication apparatus 100 can detect the distance of another wireless communication apparatus 150, and transmission letter at that time
The annoyance level in road.There are many method of detecting, such as measure the letter from wireless communication apparatus 150 by high frequency transmission circuit 130
Number intensity or transmission rate.In addition, initial transmission rate is also the index of a judgement, such as initial transmission rate height may
The distance for representing wireless communication apparatus 150 is closer, and distance that is on the contrary then representing wireless communication apparatus 150 is farther out.Other parameters
Such as false alarm（False Alarm,FA）Number, power spectrum density（Power Spectrum Density,PSD）Scanning knot
Fruit, clear channel assessment (CCA)（Clear Channel Assessment,CCA）Number ... etc., also can be used as it is a kind of weigh this
The standard of the idle degrees of channel；And
Step S620：Those candidate transport rate groups are chosen according to the statistical result and communication quality detecting result wherein
One of be used as the target transmission speed group.Above-mentioned example is held, can be learnt according to statistical result select high transfer rate
Group（T201 and T202）Or low transmission rate group（T203 and T204）, and can be further according to communication quality detecting result
The transmission rate for more meeting actual state is chosen from high transfer rate group or low transmission rate group.For example, if statistics
As a result with the data packet number of high transfer rate transmission more than threshold value in（It is more to represent collision）, and communication quality detecting knot
The intensity of fruit indication signal is more than another threshold value, such as 60%, in this case, judges that current communication environment belongs to
Closely and more situation is collided, therefore selects that re-transmission should be selected when transmission rate from transmission rate group T201 and T202
Transmission rate is successively decreased slower person with number of retransmissions, such as initial and retransmission rate is respectively high transfer rate, high transfer rate, height
Transmission rate and middle transmission rate, that is to say, that still use high transfer rate when second retransmits, can be more efficiently into
The transmission of row data packet；However if in statistical result with high transfer rate transmission data packet number be more than threshold value,
But the intensity of communication quality detecting result indication signal only has 40%, is less than threshold value, in this case, judges current lead to
News environment belongs to remote situation, therefore selects that re-transmission should be selected when transmission rate from transmission rate group T201 and T202
Transmission rate is successively decreased very fast person with number of retransmissions, for example, initial and retransmission rate be respectively high transfer rate, middle transmission rate, in
Transmission rate and low transmission rate, that is to say, that because the relationship of distance farther out, probably must slightly reduce transmission
Data packet can be sent to wireless communication apparatus 150 by rate.
In a preferred embodiment, the recording mode of table 200 can be presented with the method for relative transmission rate,
Referring to Fig. 7, its schematic diagram for another embodiment of the transmission rate group of the present invention.The initial transmission of each transmission rate group
Rate is all indicated with 0, and the number recorded in retransmission rate represents the series gap with initial transmission rate.For example, if
The initial transmission rate of transmission rate group T701 is high transfer rate, then first, second and third retransmission rate is respectively high-transmission speed
Rate, middle transmission rate and low transmission rate.That is, table 700 is identical with the meaning representated by table 200, but
Be record it is relative transmission rate rather than absolute transmission rate, therefore can more saves storage space.Once initial transmission is fast
Rate determines that all transmission rates in transmission rate group can determine.
Later, one of multiple transmission rates in the target transmission speed group is selected to continue to transmit other data
Package, for example, can be each selection one of them, can also be it is primary every predetermined time selection, the present invention not as
Limit；In addition, selection method can be random selection, can also be is selected by a preset order, and invention is not limited thereto.
The initial transmission rate of any one transmission rate group can be pre-determined, can also be determined by initial transmission rate
Module 125 is determined according to communication condition dynamic at that time.Referring to Fig. 8, its biography for the decision wireless communication apparatus of the present invention
The flow chart of another embodiment of the method for defeated rate group, compared to embodiment as shown in figure 3, embodiment adds following
Step：
Step S810：Initial transmission rate decision module 125 determines initial transmission rate group according to statistical result, initial to pass
Defeated rate group includes multiple alternative initial transmission rates.By taking the wireless transmission standards of IEEE802.11g as an example, which define 8 kinds
Transmission rate, from low to high respectively 6MHz, 9MHz, 12MHz, 18MHz, 24MHz, 36MHz, 48MHz, 54MHz.Such as Fig. 9 institutes
The table 900 shown includes initial transmission rate group T901~T904, and each initial transmission rate group includes multiple candidate transports speed
Rate, such as initial transmission rate group T901 include whole alternative initial transmission rates, and initial transmission rate group T902 includes
Two alternative initial transmission rates such as 54MHz and 48MHz.In a preferred embodiment, when statistical result indicates to pass with height
When the data packet number of defeated speed rates is more than threshold value, the selection of initial transmission rate decision module 125 has high transfer rate
Initial transmission rate group, such as initial transmission rate group T901, T902 and T903；And
Step S820：One of those alternative initial transmission rates are chosen using as the initial biography according to statistical result
Defeated rate.
In more detail, it is assumed that step S320 uses a scheduled initial transmission rate 54MHz, and uses transmission speed
Rate group T701 is used as initial stage transmission rate group, then wireless communication apparatus 100 will transmit number with the initial transmission rate of 54MHz
According to package, and when needing to retransmit, sequentially it is used as re-transmission data using 54MHz, 48MHz and 36MHz according to retransmission rate
Transmission rate when package.In step S303, over time, become, the statistical result such as Figure 10 is obtained.Due to 54MHz
It is more than the 70% of sum that the data packet number of transmission, which is 170, and assumes that wireless communication apparatus 100 detects wireless communication apparatus 150
Transmission rate be more than a rate threshold value, such as 48MHz, then environment instantly be closely and the more environment of collision, this
When in step S340 transmission rate group decision module 123 transmission rate group T702 can be selected as next transmission rate
Selection gist.In step S810, foundation is closely and to collide more environment instantly by initial transmission rate decision module 125
Condition chooses initial transmission rate group T902 from table 900.In step S820, initial transmission rate decision module 125 will
Selected from available initial transmission rate one as initial rate, the transmission for being included by initial transmission rate group T902
Rate is all higher transmission rate, therefore whether selects 54MHz or 48MHz as initial transmission rate, can all make biography
Defeated efficiency improves.If wireless communication apparatus 100 detects the transmission rate of wireless communication apparatus 150 less than upper conversely speaking,
The rate threshold value stated then represents wireless communication apparatus 100 and wireless communication apparatus 150 apart from far, therefore in step S810
In, foundation is that environmental conditions remote and that collision is more are chosen from table 900 instantly by initial transmission rate decision module 125
Initial transmission rate group T904.Again determine that initial transmission rate can be with according to statistical result and/or communication quality detecting result
So that wireless communication apparatus 100 more can be carried out transmission data package according to current environmental aspect, helps to promote whole transmission effect
Energy.
For wireless telecommunication system, environment can usually change, such as user usually moves notebook computer, makes
Notebook computer and the far and near of radio base station generate variation, and transmission rate group and initial transmission rate is caused to need to select again
It selects.Therefore also packet step S830 in flow shown in Fig. 8 in step S830 detects decision module 127 and sentences according to condition again
It is disconnected whether to re-execute step S330~S340 and step S810~820.In a preferred embodiment, condition can
Can have following several：(1) every a predetermined time segment, for example, every 10 seconds or 20 seconds i.e. reselect transmission rate group；(2)
When the signal strength of wireless communication apparatus 150 has larger change；Or (3) have when the transmission rate of wireless communication apparatus 150
When larger change.Other conditions for example, false alarm number change, PSD scanning results there is abnormal signal to appear or disappear,
Clear channel assessment (CCA)（CCA）Number changes or retransmits package distributed intelligence change etc..When again detect decision module 127
Current environmental aspect is detected in decision again, then sends control signal and counted to package detecting module 122 is retransmitted with regenerating
As a result.
When the wireless transmission standards of wireless communication apparatus 100 using IEEE802.11n, standard formulation MCS0~
MCS31 totally 32 kinds of transmission rates, due to the huge number of transmission rate, the retransmission rate table formulated is unlike table
700 is simple in this way, please refers to Fig.1 1, for the schematic diagram of another embodiment of the transmission rate group of the present invention.Assuming that initial pass
Defeated rate decision module 125 determines that initial transmission rate is MCS31, and the selection of initial stage transmission rate group decision module 121 passes
Defeated rate group T1102, then transmission for the first time will be transmitted with transmission rate MCS31, retransmit for first, second and third time will point
It is not transmitted with MCS31, MCS30 and MCS27 not.And assume to obtain statistical result as shown in figure 12 in step S330, by
It is 70 in the data packet sum transmitted with MCS31, does not reach threshold value（Such as the 70% of sum）, and used initial biography
Defeated rate is MCS31, is more than threshold value（Such as MCS28）, therefore judge environmental aspect for the insufficient environment of signal noise ratio.By
It is so high in initial rate, therefore wireless communication apparatus 100 will select transmission rate group T1105 as next heavy
Foundation is passed, it, can be than faster reducing retransmission rate because transmission rate group T1105 is when retransmitting, therefore can compare
It is easy that wireless communication apparatus 150 is allowed to accept package.If conversely speaking, at the beginning wireless communication apparatus 100 select MCS27 as
The initial transmission rate of data packet, statistical result is as shown in figure 13 at this time, re-transmission distribution scenario and Figure 12 phases of data packet
Together, but transmission rate is different, at this time wireless communication apparatus 100 will select transmission rate group T1103 or T1104 as data packet
Foundation when retransmitting can allow the speed for reducing transmission rate more to mitigate, transmission rate will not be caused to be down to too low
Situation occurs.
4 are please referred to Fig.1, for another embodiment of the method for the transmission rate group of the decision wireless communication apparatus of the present invention
Flow chart.Embodiment compared to Fig. 8, the flow of this embodiment more step S1410 between step S810 and S820.
In the step, ranking operation module 126 can be according to statistical result（It, then can be simultaneously according to system if there is communication quality detecting result
Count result and communication quality detecting result）Statistical result and Weighted Index are made into operation, generate the statistical result after weighting.Assuming that
The statistical result of script is as shown in figure 15, because being more than threshold value with the data packet of high-speed transfer, it is more to belong to collision
Situation.Since primary re-transmission all occurs for most of data packet, in order to avoid the initial transmission rate in step S820
Decision module 125 can select transmission rate more lower than existing initial transmission rate MCS27 when determining initial transmission rate
Become initial transmission rate, therefore ranking operation module 126 can carry out statistical result shown in figure 15 weight adjustment, such as
It gives four transmission rates to different weights respectively, such as (2,1,0.5,0.5), then can obtain statistics knot as shown in figure 16
Fruit.So, the biography that initial transmission rate decision module 125 will have higher chance to select MCS27 or more in step S820
Defeated rate is as initial transmission rate.In a preferred embodiment, when with the data packet of high-speed transfer be more than threshold value,
When namely colliding more, step S1410 just utilizes weight to adjust statistical result.
Due to those of ordinary skill in the art can by the disclosure of the device inventions of Fig. 1 come understand Fig. 3, Fig. 6,
The implementation detail of the method invention of Fig. 8 and Figure 14 and variation, therefore, to avoid superfluous text, in the disclosure for not influencing this method invention
It is required that and under the premise of exploitativeness, repeat description gives memorandum herein.It is taken off in attached drawing before note that, the shape of element, ruler
Sequence of very little, ratio and step etc. is only to illustrate, and is used to understand the present invention for those of ordinary skill in the art, non-use
To limit the present invention.In addition, those skilled in the art of the present technique can disclosure under this invention and the demand of itself selectively
Implement some or all of any embodiment technical characteristic, or selectively implements some or all of multiple embodiments technology
The combination of feature increases the elasticity when present invention is implemented whereby.
Although the embodiment of the present invention is as described above, however those embodiments are not used for limiting the present invention, this technology neck
Domain those of ordinary skill can be according to the present invention the content expressed or implied to the present invention technical characteristic impose variation, it is all such
Kind variation may belong to the patent protection scope sought by the present invention, and in other words, scope of patent protection of the invention must regard this
Subject to the those as defined in claim of specification.
Claims (24)
1. a kind of method for the target transmission speed group determining a wireless communication apparatus, the wireless communication apparatus select the target
One of multiple transmission rates that transmission rate group is included transmit data packet, and this method includes：
Multiple candidate transport rate groups are provided；
Multiple data packets are transmitted according to an initial stage transmission rate group；
In the number that repeatedly transmits in a preset time, counting those data packets, and generate a statistical result；And
One of those candidate transport rate groups, which are chosen, according to the statistical result is used as the target transmission speed group；
Wherein the statistical result is related to the impact severity of those data packets, and those candidate transport rate groups include at least
One first candidate transport rate group and at least one second candidate transport rate group, all transmission of the first candidate transport rate group
The average value of rate is more than the average value of all transmission rates of the second candidate transport rate group, this is selected according to the statistical result
Take one of those candidate transport rate groups as the target transmission speed group the step of include：
If the statistical result indicates that the impact severity is more than a preset value, the first candidate transport rate group is chosen as the mesh
Mark transmission rate group；And
If the statistical result indicates that the impact severity is less than the preset value, the second candidate transport rate group is chosen as the mesh
Mark transmission rate group.
2. the method according to claim 1 also includes：
The communication quality for detecting the wireless communication apparatus, to generate a communication quality detecting result；
Wherein this is chosen one of those candidate transport rate groups according to the statistical result and is used as the target transmission speed group
The step of also include：
The target transmission speed group is determined according to the communication quality detecting result.
3. method according to claim 2, wherein those candidate transport rate groups include multiple first candidate transport rate groups
Or multiple second candidate transport rate groups, and this determines the step of the target transmission speed group according to the communication quality detecting result
Suddenly include：
One of those first or second candidate transport rate groups, which are chosen, according to the communication quality detecting result is used as the mesh
Mark transmission rate group.
4. method according to claim 2, the wherein wireless communication apparatus and a Target Wireless communication device are linked up, which should
The step of communication quality of wireless communication apparatus includes：
Detect the Target Wireless communication device a signal strength and a transmission rate at least one.
It is passed 5. method according to claim 2, wherein the initial stage transmission rate group include an initial transmission rate and multiple repetitions
Defeated rate, the wireless communication apparatus transmit data packet for the first time using the initial transmission rate, and optionally by those
One of transmission rate same data packet that retransfers is repeated, the communication quality of the detecting wireless communication apparatus
Step also includes：
With reference to the initial transmission rate to generate the communication quality detecting result.
It is passed 6. the method according to claim 1, wherein the initial stage transmission rate group include an initial transmission rate and multiple repetitions
Defeated rate, the wireless communication apparatus transmit data packet for the first time using the initial transmission rate, and optionally by those
Repeat one of transmission rate same data packet that retransfers, and those repeat transmission rates at least one with
The initial transmission rate is identical.
7. the method according to claim 1 also includes：
Initial transmission rate is determined again according to the statistical result；
Wherein those transmission rates are determined according to the initial transmission rate.
8. the step of method according to claim 7, wherein this determines the initial transmission rate according to the statistical result, includes：
An initial transmission rate group is determined according to the statistical result, which includes multiple alternative initials transmission speed
Rate；And
One of those alternative initial transmission rates are chosen using as the initial transmission rate according to the statistical result.
9. method according to claim 7, also includes：
The statistical result and a weighting coefficient are made into operation to obtain the statistical result after a weighting；
The step of wherein this determines the initial transmission rate according to the statistical result is determined according to the statistical result after the weighting
The initial transmission rate.
10. the method according to claim 1 also includes：
Decide whether to reselect the target transmission speed group according to a Rule of judgment.
11. method according to claim 10, the wherein wireless communication apparatus and a Target Wireless communication device are linked up, the judgement
Condition is related at least one of a signal strength of the Target Wireless communication device and a transmission rate.
12. method according to claim 10, the wherein Rule of judgment are whether to reach a preset time.
13. a kind of wireless communication apparatus, including：
One storage element, for storing multiple candidate transport rate groups, each candidate transport rate group includes multiple transmission rates；
One high frequency transmission circuit；And
One arithmetic element couples the storage element and the high frequency transmission circuit, should for accessing those transmission rate groups and control
High frequency transmission circuit transmits multiple data packets, including：
One initial stage transmission rate group decision module, for choosing one of those candidate transport rate groups using as an initial stage
Transmission rate group, the wherein arithmetic element control the high frequency transmission circuit and transmit those data envelope according to the initial stage transmission rate group
The part of packet；
One retransmits package detecting module, number is repeatedly transmitted for count those data packets, to generate a statistical result；With
And
One transmission rate group decision module chooses one of those candidate transport rate groups with for work according to the statistical result
One target transmission speed group, the wherein arithmetic element control the high frequency transmission circuit and select the target transmission speed group to be included
One of multiple transmission rates transmit the rest part of those data packets；
Wherein the statistical result is related to an impact severity of those data packets, and those candidate transport rate groups include extremely
Few one first candidate transport rate group and at least one second candidate transport rate group, all biographies of the first candidate transport rate group
The average value of defeated rate is more than the average value of all transmission rates of the second candidate transport rate group, if the transmission rate group is determined
Cover half block judges that the impact severity is more than a preset value, then the transmission rate group decision module chooses the first candidate transport rate
Group be used as the target transmission speed group, and if the transmission rate group decision module judge the impact severity be less than the preset value,
Then the transmission rate group decision module chooses the second candidate transport rate group as the target transmission speed group.
14. wireless communication apparatus according to claim 13, the wherein arithmetic element also include：
One communication quality detecting module is detectd for detecting a communication quality of the wireless communication apparatus with generating a communication quality
Survey result；
Wherein the transmission rate group decision module also determines the target transmission speed group according to the communication quality detecting result.
15. wireless communication apparatus according to claim 14, wherein those candidate transport rate groups include multiple first candidates
Transmission rate group or multiple second candidate transport rate groups, and the transmission rate group decision module is detected according to the communication quality
As a result one of those first or second candidate transport rate groups are chosen and are used as the target transmission speed group.
16. wireless communication apparatus according to claim 14, the wherein wireless communication apparatus and a Target Wireless communication device ditch
It is logical, the communication quality detecting module detect the Target Wireless communication device a signal strength and a transmission rate at least within
One of.
17. wireless communication apparatus according to claim 14, wherein the initial stage transmission rate group include an initial transmission rate and
Multiple to repeat transmission rate, which transmits data packet for the first time using the initial transmission rate, and selective
Using one of those repetition transmission rates same data packet that retransfers, communication quality detecting module reference should on ground
Initial transmission rate is to generate the communication quality detecting result.
18. wireless communication apparatus according to claim 13, wherein the initial stage transmission rate group include an initial transmission rate and
Multiple to repeat transmission rate, which transmits data packet for the first time using the initial transmission rate, and selective
Ground is using one of those repetition transmission rates same data packet that retransfers, and those repeat transmission rate at least
One of them is identical as the initial transmission rate.
19. wireless communication apparatus according to claim 13, the wherein arithmetic element also include：
One initial transmission rate decision module, for predetermine an initial transmission rate and after obtaining the statistical result according to
The initial transmission rate is determined again according to the statistical result；
Wherein those transmission rates are determined according to the initial transmission rate.
20. wireless communication apparatus according to claim 19, wherein the initial transmission rate decision module is first according to the statistics knot
A decisive and resolute fixed initial transmission rate group, which includes multiple alternative initial transmission rates, then according to the statistics
As a result one of those alternative initial transmission rates choosing is chosen using as the initial transmission rate.
21. wireless communication apparatus according to claim 19, the wherein arithmetic element also include：
One ranking operation module, for the statistical result and a weighting coefficient are made operation to obtain the statistics knot after a weighting
Fruit；
Wherein the initial transmission rate decision module determines the initial transmission rate according to the statistical result after the weighting.
22. wireless communication apparatus according to claim 13, the wherein arithmetic element also include：
One detects decision module again, for determining whether the arithmetic element reselects the object transmission according to a Rule of judgment
Rate group.
23. wireless communication apparatus according to claim 22, the wherein wireless communication apparatus and a Target Wireless communication device ditch
Logical, the Rule of judgment is related at least one of a signal strength of the Target Wireless communication device and a transmission rate.
24. wireless communication apparatus according to claim 22, the wherein Rule of judgment are whether to reach a preset time.
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| CN110719138B (en) * | 2018-07-13 | 2022-04-01 | 中兴通讯股份有限公司 | Transmission rate determining method, device, transmission equipment and storage medium |
| CN111726792B (en) * | 2020-05-22 | 2021-09-28 | 深圳市南方硅谷半导体有限公司 | Wireless communication method, wireless communication apparatus, storage medium, and computer device |
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| TWI835077B (en) * | 2022-02-24 | 2024-03-11 | 瑞昱半導體股份有限公司 | Wireless communication device and method for determining data transmission rate |
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