CN104125631B - A kind of receiving channel automatic controlling method for gain and equipment - Google Patents
A kind of receiving channel automatic controlling method for gain and equipment Download PDFInfo
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- CN104125631B CN104125631B CN201310148944.9A CN201310148944A CN104125631B CN 104125631 B CN104125631 B CN 104125631B CN 201310148944 A CN201310148944 A CN 201310148944A CN 104125631 B CN104125631 B CN 104125631B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
Abstract
The invention discloses a kind of receiving channel automatic controlling method for gain and equipment, this method includes：Receiving terminal receives the data from transmitting terminal, and each time slot of the data includes automatic growth control training AGCT periods and data PDATA periods；Wherein, the AGCT periods include the training signal for being used to carry out automatic growth control AGC, and the PDATA periods include data content；The receiving terminal utilizes the training signal for being used to carry out AGC carried in the AGCT periods to carry out the Gain Automatic control of receiving channel of this time slot.In the embodiment of the present invention, by carrying the training signal for carrying out AGC in the AGCT periods of data, the Gain Automatic control of receiving channel for enabling receiving terminal to utilize the training signal for carrying out AGC carried in the AGCT periods to carry out this time slot, so as to when received signal power quickly changes, it is ensured that receiving channel gain can quickly be adapted to the change of received signal power.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of receiving channel automatic controlling method for gain and set
It is standby.
Background technology
Based on TDMA（Time Division Multiple Access, time division multiple acess）The technology of the car networking of technology is special
Property includes：（1）Pass through GNSS between car and car（Global Navigation Satellite System, global navigation satellite
System）It is synchronous, time slot is divided on the basis of GNSS time services, each car individually takes the running time-frequency resource of a time slot, different user
Use different time-gap；（2）Received using 2 antennas；（3）When vehicle send information when, it is necessary to covering most far 300 meters of scope,
Adjacent car minimum distance is 2 meters, and the dynamic range for receiving signal is larger；（4）Because the mobility of car is strong, network topology changes fast,
Therefore the far and near information of certain time slot can not be predicted, that is, possible received signal power can not be learnt by receiving before certain time slot；In addition, will
The reception signal using a time slot is sought, while completing receiving channel Gain tuning and signal testing function.
LTE（Long Term Evolution, Long Term Evolution）D2D in Cellular Networks（Device to Device, equipment
To equipment）Communication, D2D terminals need to safeguard two sets of links simultaneously, and one is traditional D2N（Device to Network, equipment
To network）Link, another is D2D links；If the resource of this two sets of links needs to be time-multiplexed, switch from D2N
To before D2D, D2D terminals need to preserve the AGC of D2N links（Automatic Gain Control, automatic growth control）Increase
Benefit value, and when switching to D2N from D2D, the AGC gain value preserved before recovery.Further, between 2 D2D terminals away from
From being uncertain, and D2D terminal mobilities are very strong, for the D2D terminals of receiving side, because received signal power is still fast
Speed change, therefore the D2D terminals can not learn possible received signal power.
During the present invention is realized, inventor has found at least there is problems with the prior art：
, can be due to receiving signal work(in the D2D communications based on the communication of the car networking of TDMA technologies and LTE Cellular Networks
Quickly change causes receiving terminal can not learn possible received signal power to rate（Received signal power can not be predicted）；Receiving
, it is necessary to which receiving channel gain can quickly be adapted to the change of received signal power when signal power occurs quickly to change,
But do not have correlation technique currently.
The content of the invention
The embodiment of the present invention provides a kind of receiving channel automatic controlling method for gain and equipment, to be sent out in received signal power
During raw quick change, it is ensured that receiving channel gain can be quickly adjusted.
In order to achieve the above object, the embodiment of the present invention provides a kind of receiving channel automatic controlling method for gain, this method
Including：
Receiving terminal receives the data from transmitting terminal, and each time slot of the data includes automatic growth control training
AGCT periods and data PDATA periods；Wherein, the AGCT periods include the training for being used to carry out automatic growth control AGC
Signal, the PDATA periods include data content；
The receiving terminal carries out connecing for this time slot using the training signal for being used to carry out AGC carried in the AGCT periods
Channel gain is received to automatically control.
The embodiment of the present invention provides a kind of receiving channel automatic controlling method for gain, and this method includes：
Transmitting terminal generation needs to be sent to the data of receiving terminal, and each time slot of the data includes automatic growth control
Train AGCT periods and data PDATA periods, the AGCT periods include the training letter for being used to carry out automatic growth control AGC
Number, the PDATA periods include data content；
The transmitting terminal sends the data to receiving terminal, utilizes what is carried in the AGCT periods by the receiving terminal
The Gain Automatic control of receiving channel of this time slot is carried out for carrying out AGC training signal.
The embodiment of the present invention provides a kind of receiving terminal, and the receiving terminal includes：
Receiving module, for receiving the data from transmitting terminal, each time slot of the data includes automatic gain control
System training AGCT periods and data PDATA periods；The AGCT periods include the training for being used to carry out automatic growth control AGC
Signal, the PDATA periods include data content；
Control module, for carrying out this time slot using the training signal for being used to carry out AGC carried in the AGCT periods
The Gain Automatic control of receiving channel.
The embodiment of the present invention provides a kind of transmitting terminal, and the transmitting terminal includes：
Generation module, needs to be sent to the data of receiving terminal, each time slot of the data includes automatically for generating
Gain controlled training AGCT periods and data PDATA periods, the AGCT periods include the instruction for being used to carry out automatic growth control AGC
Practice signal, the PDATA periods include data content；
Sending module, for sending the data to receiving terminal, utilizes what is carried in the AGCT periods by receiving terminal
The Gain Automatic control of receiving channel of this time slot is carried out for carrying out AGC training signal.
Compared with prior art, the embodiment of the present invention at least has advantages below：In the embodiment of the present invention, by data
AGCT（Automatic Gain Control Training, automatic growth control training）Carried in period for carrying out AGC
Training signal, enable receiving terminal to utilize being used for of being carried in the AGCT periods to carry out AGC training signal and carry out this time slot
The Gain Automatic control of receiving channel, so that when received signal power quickly changes, it is ensured that receiving channel gain being capable of velocity modulation soon
The whole change to adapt to received signal power；Further, the receiving channel that can largely compress each time slot increases
Benefit adjustment time delay, is obviously improved in frequency efficiency, propagation delay time, can meet the demand of car networking.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the accompanying drawing used required in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the receiving channel automatic controlling method for gain schematic flow sheet that the embodiment of the present invention one is provided；
Fig. 2 and Fig. 3 are that the embodiment of the present invention one includes the time slot of GP periods, AGCT periods and PDATA periods
Structural representation；
Fig. 4 is a kind of structural representation for receiving terminal that the embodiment of the present invention two is provided；
Fig. 5 is a kind of structural representation for transmitting terminal that the embodiment of the present invention three is provided.
Embodiment
In Adhoc（It is point-to-point）In wireless self-networking, the transmission power of each node needs the model of covering according to the node
Enclose to determine, the scope of node requirements covering is bigger, it is necessary to which node transmitting power is stronger.It is general in ad-hoc communication network
Multiple nodes of existence position random distribution, receiving node received signal power is with the distance with transmitting node and wirelessly
Radio propagation environment difference and it is different, transmitting node is near apart from receiving node, then receiving power is strong, the remote then receiving power of distance
It is weak.Therefore for each node, the dynamic range of received signal power is than larger, and node transmitting power is bigger, section
The dynamic range that point receives signal is bigger.Dynamic range exceedes certain amplitude, may result in node and is unable to properly receive signal,
The problem of node receives AGC is now just introduced, i.e., is controlled to receiving channel gain.
For Adhoc wireless self-networkings, each node is within the specified time（Referred to as time slot）Transmission signal, remaining
Interdependent node was needed within the time（The time slot）Receive the transmission signal of this node.It is continuous many for some node
The signal that individual time slot is received is what different nodes were sent, and these sending nodes are from being random distribution with a distance from this node；
Based on this, receiving power size is also random distribution, and dynamic range is than larger.The Gain Automatic control of traditional receiving channel
Method processed is to adjust the receiving channel gain of following slots using the signal power size of previous time slot reception.
In centralized scheduling network（Such as Cellular Networks）Receiving channel Gain Adjustment Strategy in, it is impossible to realize " using current
Time slot data complete the function of receiving channel Gain tuning and signal detection simultaneously ".Based on this, in the D2D communications of Cellular Networks,
Because D2D terminals can not learn possible received signal power, therefore existing receiving channel Gain Adjustment Strategy can not be applied to
D2D communications in Cellular Networks.
In the receiving channel Gain Adjustment Strategy of MANET, it is impossible to realize " using current time slots data while completing to connect
Receive the function of channel gain adjustment and signal detection ".Based on this, in the car networking based on MANET, due to MANET structure
In each node do not introduce GNSS time services and do time synchronized, do not divide strict time slot, receiving terminal, which needs to dock to collect mail, number to be continued
Reception, adjustment receiving channel gain, complete to slide and related send the original positions of data to find；This networking structure transmission
Efficiency is low, propagation delay time is big, and suitable for application in car networking, therefore existing receiving channel Gain Adjustment Strategy can not be applied to car
Networking.
In summary, based on TDMA technologies, can be due to receiving in car networking communication and the D2D communications of LTE Cellular Networks
Quickly change causes receiving terminal can not learn possible received signal power to signal power（Received signal power can not be predicted）；
When quick change occurs for received signal power, it is necessary to which receiving channel gain can quickly be adapted to received signal power
Change, but do not have correlation technique currently.
For problems of the prior art, the embodiments of the invention provide a kind of Gain Automatic controlling party of receiving channel
Method and equipment, by carrying the training signal for carrying out AGC in the AGCT periods of data so that receiving terminal can be utilized
The training signal for carrying out AGC carried in the AGCT periods carries out the Gain Automatic control of receiving channel of this time slot, so that
When received signal power quickly changes, it is ensured that receiving channel gain can quickly be adapted to the change of received signal power；
Further, method provided in an embodiment of the present invention can also largely compress the receiving channel gain tune of each time slot
Whole time delay, is obviously improved in frequency efficiency, propagation delay time, can meet the demand of car networking.
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, shown
So, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment one
In Adhoc MANETs, the embodiment of the present invention one provides a kind of receiving channel automatic controlling method for gain, this method
Can apply to received signal power, quickly change causes receiving terminal can not learn the application scenarios of possible received signal power,
The D2D communication scenes of such as current car networking communication scenes and LTE Cellular Networks based on TDMA technologies；As shown in figure 1, should
Method comprises the following steps：
Step 101, transmitting terminal generation needs to be sent to the data of receiving terminal, when each time slot of the data includes AGCT
Section and PDATA（Data）Period, the AGCT periods include the training signal for being used to carry out AGC, and are carried in the AGCT periods
The training signal for being used to carry out AGC be to be generated by the way of short sequence cyclic shift sequence spreading length, during the PDATA
Section includes data content.In addition, GP can also be included in each time slot of the data（Guard Period, protection interval）When
Section.
Wherein, a slot length of physical layer is 1ms, when the slot length is divided into GP periods, AGCT periods and PDATA
Section；In a kind of preferred embodiment of the embodiment of the present invention, include the time slot of GP periods, AGCT periods and PDATA periods
Structure can be as shown in Figure 2.All numerals subsequently occurred are all exemplaries, and the protection domain of the embodiment of the present invention is not limited
In these examples.
（1）The GP periods, the length of GP periods is 31us, and it leads as transmitting-receiving conversion and propagation distance, timing error factor
The inter-node times protection of cause.Further, the Design of length of GP periods needs to consider MANET coverage, and the GP periods are used for keeping away
Open other sending node interference signals beyond design coverage.
（2）AGCT periods, the length of AGCT periods is 112us, its as automatic growth control training signal, during AGCT
The related description of section will be elaborated in subsequent process.
（3）PDATA periods, the PDATA periods take GP periods and AGCT periods（The Period Length sum of the two is 143us）
Running time-frequency resource afterwards, it is used for the transmission for carrying out data content.
Step 102, transmitting terminal sends the data to receiving terminal, and the data from transmitting terminal are received by receiving terminal.The data
Each time slot include GP periods, AGCT periods and PDATA periods, and the AGCT periods include the training that is used to carry out AGC
Signal, the PDATA periods include data content.
Step 103, receiving terminal carries out connecing for this time slot using the training signal for being used to carry out AGC carried in the AGCT periods
Channel gain is received to automatically control.Specifically, receiving terminal utilizes the training signal for being used to carry out AGC carried in the AGCT periods working as
Preceding time slot carries out the adjustment of receiving channel gain, after the adjustment to complete receiving channel gain in current time slots, carries out this when
The functions such as data demodulation, the decoding of gap.
In the embodiment of the present invention, the AGCT periods include Training sig（Training signal）Period and Adjust（Adjustment）
Period, receiving terminal utilizes the training signal for being used to carry out AGC carried in the AGCT periods to carry out the receiving channel gain of this time slot
Automatically control, be specifically including but not limited to：Receiving terminal utilizes all reception signal of change in the Training sig periods
The mean power of signal in the Training sig periods, and pass through mean power and the target received signal work(for desiring to enter into ADC
Rate（That is target power）Between mathematic interpolation obtain receiving channel gain, and the receiving channel gain obtained using calculating exists
The receiving channel gain of this time slot is adjusted in the Adjust periods.Wherein, when mean power is believed with desiring to enter into ADC intended recipient
Difference between number power is when being negative value, it is necessary to reduce receiving channel gain；When mean power connects with desiring to enter into ADC target
Receive signal power between difference be on the occasion of when, it is necessary to increase receiving channel gain.
In the preferred embodiment of the embodiment of the present invention, transmitting terminal needs to send a short sequence in the AGCT periods first
（Such as 17us short sequence）, then cyclic shift fill whole AGCT periods（It is i.e. long using short sequence cyclic shift sequence spreading
The mode of degree generates the training signal for being used to carry out AGC carried in the AGCT periods）；Short sequence master is used in the embodiment of the present invention
If in order that receiving terminal can repeatedly take out complete training sequence from the AGCT periods, so that the processing to receiving terminal is brought
Larger flexibility.
Based on this, in the embodiment of the present invention, the AGCT periods can include multiple Training sig periods and respectively with
Multiple Training sig periods corresponding Adjust periods, for example：The AGCT periods successively include the Training sig_0 periods,
Adjust_0 periods, Training sig_1 periods, Adjust_1 periods, Training sig_2 periods, Adjust_2 periods；
In the case, the total length of AGCT periods by the length based on the Training sig periods, the length of Adjust periods,
Quantity of Training sig periods and Adjust periods etc. is determined jointly；For example：The total length of AGCT periods will be based on
The length of Training sig_0 periods, the length of Adjust_0 periods, the length of Training sig_1 periods, Adjust_1
Length, the length of Training sig_2 periods, the length sum of Adjust_2 periods of period.
In the embodiment of the present invention, maximum translational speed of the length based on each equipment in network of Training sig periods is true
Fixed, i.e. the design of Training sig Period Lengths needs to consider the translational speed of MANET interior joint；Wherein, saved in MANET
The maximum translational speed of point is faster, then the length of Training sig periods is longer；The maximum translational speed of MANET interior joint
Slower, then the length of Training sig periods is shorter.
Specifically, because quick movement can produce decline, therefore the length of Training sig periods（Such as Training
Length, the length of Training sig_1 periods, length of Training sig_2 periods of sig_0 periods etc.）Design need
Meet fading model（The length of Training sig periods is determined based on maximum translational speed）, to ensure Training
The power that the sig periods calculate is reliable, available.
In the embodiment of the present invention, the length of Adjust periods is based on receiving terminal（Such as receiver）Adjust receiving channel gain
Response speed is determined；Such as length, the length of Adjust_1 periods, the design of the length of Adjust_2 periods of Adjust_0 periods
The response speed of receiving channel gain is adjusted depending on receiver.
In the embodiment of the present invention, the quantity of Training sig periods and Adjust periods（The Training sig periods
Quantity is identical with the quantity of Adjust periods）Based on network dynamic scope and receiving terminal（Such as receiver）ADC（Analog
To Digital Converter, analog-digital converter）The acceptable dynamic range of institute determines that is, receiving terminal needs basis jointly
The acceptable dynamic ranges of ADC institutes of network dynamic scope and receiver, design multiple Training sig periods and
The Adjust periods, and need adjust receiving channel gain number of times it is more, it is necessary to divide the Training sig periods and
The Adjust periods are more.
Include multiple Training sig periods in the AGCT periods and corresponding with multiple Training sig periods respectively
Adjust periods when, receiving terminal carries out connecing for this time slot using the training signal for being used to carry out AGC carried in the AGCT periods
Receive channel gain to automatically control, specifically include following steps：
Step A, receiving terminal utilize all reception signal of change Training in first Training sig period
The mean power of signal in the sig periods, and utilize the mean power in the Training sig periods and the mesh for desiring to enter into ADC
Mathematic interpolation between mark received signal power obtains receiving channel gain；
Step B, receiving terminal judge currently to calculate whether obtained receiving channel gain is receiving channel in zone of reasonableness
Gain；If it is not, then performing step C；If it is, performing step F；
Wherein, receiving terminal can be pre-configured with the receiving channel gain in zone of reasonableness（Such as 5db-15db）, worked as by comparing
Preceding to calculate obtained receiving channel gain and the receiving channel gain in zone of reasonableness, receiving terminal can determine that what current calculating was obtained
Whether receiving channel gain is receiving channel gain in zone of reasonableness.
Step C, receiving terminal judge whether also there is next Training after the current Training sig periods
The sig periods；If it is, performing step D；If it is not, then performing step G；
Step D, receiving terminal are using Gain tuning step-length in the current Training sig periods corresponding Adjust periods
The interior receiving channel gain for adjusting this time slot, performs step E afterwards；
Wherein, receiving terminal can be pre-configured with Gain tuning step-length, such as：Receiving terminal configures Gain tuning step-length（Receive logical
The difference of road maximum gain and receiving channel least gain）/2；Further, when there is next Training sig periods,
Receiving terminal can be using the Gain tuning step-length being pre-configured with the current Training sig periods corresponding Adjust periods
The interior receiving channel gain for adjusting this time slot.
This is next using all reception signal of change in next Training sig periods for step E, receiving terminal
The mean power of signal in the Training sig periods, and using the mean power in next Training sig periods with
The mathematic interpolation desired to enter between ADC target received power obtains receiving channel gain；Step is performed after this step E
Rapid B；
Step F, receiving terminal utilize and currently calculate obtained receiving channel gain in the current Training sig periods pair
The receiving channel gain of this time slot is adjusted in the Adjust periods answered, and terminates flow；
Step G, receiving terminal confirm the receiving channel Gain tuning failure of this time slot, and terminate flow.
Below in conjunction with the time slot including GP periods, AGCT periods and PDATA periods shown in Fig. 3 structure to above-mentioned
Process is further detailed；Wherein, the length of GP periods is 31us, and the length of AGCT periods is 112us, and the AGCT periods
Include Training sig_0, Adjust_0, Training sig_1, Adjust_1 successively；Training sig_0 length
For 35us, Adjust_0 length is 21us, and Training sig_1 length is 35us, and Adjust_1 length is 21us.
Under above-mentioned application scenarios, receiving terminal need open receiving channel, and set Gain tuning step-length adj_step=
Y/2, and receiving channel gain z=x is set；Wherein, x is receiving channel least gain, and y is receiving channel maximum gain with receiving
The difference of passage least gain.
In step, receiving terminal utilizes all reception signal of change Training sig_ in Training sig_0
The mean power of signal in 0, and by comparing the mean power and target power of signal in Training sig_0（Expect into
Enter ADC target received power）Calculating obtains agc_0.
In stepb, receiving terminal judges whether agc_0 is receiving channel gain in zone of reasonableness；If it is not, then performing
Step C；If it is, performing step F；And in step F, receiving terminal adjusts this time slot using agc_0 in Adjust_0
Receiving channel gain, and terminate flow.
In step C, receiving terminal judges to whether there is next Training sig periods after Training sig_0；
Judged result is that to there is next Training sig periods be Training sig_1, performs step D.
In step D, receiving terminal adjusts the receiving channel gain of this time slot in Adjust_0, that is, adjusts connecing for this time slot
Channel gain z=x+adj_step is received, step E is performed afterwards.
In step E, receiving terminal utilizes all reception signal of change Training sig_ in Training sig_1
The mean power of signal in 1, and by comparing the mean power and target power of signal in Training sig_1（Expect into
Enter ADC target received power）Agc_1 is obtained, step B is performed afterwards.
In stepb, receiving terminal judges whether agc_1 is receiving channel gain in zone of reasonableness；If it is not, then performing
Step C；If it is, performing step F；And in step F, receiving terminal adjusts this time slot using agc_1 in Adjust_1
Receiving channel gain, and terminate flow.
In step C, receiving terminal judges to whether there is next Training sig periods after Training sig_1；
Judged result is, in the absence of next Training sig periods, to perform step G.
In step G, receiving terminal confirms the receiving channel Gain tuning failure of this time slot, and the receiving terminal does not have in this time slot
There is the signal for receiving transmitting terminal transmission, and terminate flow.
In summary, in the embodiment of the present invention, believed by the training carried in the AGCT periods of data for carrying out AGC
Number, the receiving channel for enabling receiving terminal to utilize the training signal for carrying out AGC carried in the AGCT periods to carry out this time slot
Gain Automatic control, so that when received signal power quickly changes, it is ensured that receiving channel gain can be quickly adapted to
The change of received signal power；Further, when can largely compress the receiving channel Gain tuning of each time slot
Prolong, be obviously improved in frequency efficiency, propagation delay time, the demand of car networking can be met.
Embodiment two
Based on the inventive concept same with the above method, a kind of receiving terminal is additionally provided in the embodiment of the present invention, such as Fig. 4 institutes
Show, the receiving terminal includes：
Receiving module 11, for receiving the data from transmitting terminal, each time slot of the data includes automatic gain
Controlled training AGCT periods and data PDATA periods；The AGCT periods include the instruction for being used to carry out automatic growth control AGC
Practice signal, the PDATA periods include data content；
Control module 12, for carrying out this when using the training signal for being used to carry out AGC carried in the AGCT periods
The Gain Automatic control of the receiving channel of gap.
The control module 12, specifically for when the AGCT periods include the training signal Training sig periods and
When adjusting Adjust periods, all reception signal of change Training sig periods in the Training sig periods are utilized
The mean power of interior signal, and pass through the difference between the mean power and the target received power for desiring to enter into ADC
Calculating obtains receiving channel gain, and the receiving channel gain obtained using calculating adjusts this time slot within the Adjust periods
Receiving channel gain.
The control module 12, be further used for when the AGCT periods include multiple Training sig periods and
Respectively during the Adjust periods corresponding with the multiple Training sig periods, this time slot is further carried out as follows
The Gain Automatic control of receiving channel：
Step A, using all reception signal of change Training sig in first Training sig period when
The mean power of signal in section, and connect using the mean power in the Training sig periods with desiring to enter into ADC target
The mathematic interpolation received between signal power obtains receiving channel gain；
Step B, judgement currently calculate whether obtained receiving channel gain is receiving channel gain in zone of reasonableness；Such as
It is really no, then perform step C；If it is, performing step F；
Step C, judge whether also there is next Training sig periods after the current Training sig periods；
If it is, performing step D；If it is not, then performing step G；
Step D, adjusted within the current Training sig periods corresponding Adjust periods using Gain tuning step-length
The receiving channel gain of this time slot, performs step E afterwards；
Step E, utilize all reception signal of change next Training in next Training sig periods
The mean power of signal in the sig periods, and using the mean power in next Training sig periods with desiring to enter into
Mathematic interpolation between ADC target received power obtains receiving channel gain；Step B is performed afterwards；
It is step F, corresponding in the current Training sig periods using obtained receiving channel gain is currently calculated
The receiving channel gain of this time slot is adjusted in the Adjust periods, and terminates flow；
Step G, the receiving channel Gain tuning failure for confirming this time slot, and terminate flow.
In the embodiment of the present invention, the AGCT periods include multiple Training sig periods and respectively with it is described many
Individual Training sig periods corresponding Adjust periods；Wherein, when the length of the AGCT periods is based on Training sig
Length, the length of Adjust periods, Training sig periods and the quantity of Adjust periods of section are determined jointly.
In the embodiment of the present invention, maximum translational speed of the length based on each equipment in network of Training sig periods is true
It is fixed；The length of Adjust periods is determined based on the response speed that receiving terminal adjusts receiving channel gain；The Training sig periods
With analog-digital converter ADC institute acceptable dynamic model of the quantity based on network dynamic scope and receiving terminal of Adjust periods
Enclose common determination.
In the embodiment of the present invention, the protection interval GP periods are also included in each time slot of the data.
In the embodiment of the present invention, the training signal for being used to carry out AGC carried in the AGCT periods is to use short sequence
What the mode of cyclic shift sequence spreading length was generated.
Wherein, the modules of apparatus of the present invention can be integrated in one, and can also be deployed separately.Above-mentioned module can be closed
And be a module, multiple submodule can also be further split into.
Embodiment three
Based on the inventive concept same with the above method, a kind of transmitting terminal is additionally provided in the embodiment of the present invention, such as Fig. 5 institutes
Show, the transmitting terminal includes：
Generation module 21, needs to be sent to the data of receiving terminal, each time slot of the data is included certainly for generating
Dynamic gain controlled training AGCT periods and data PDATA periods, the AGCT periods include being used to carry out automatic growth control AGC's
Training signal, the PDATA periods include data content；
Sending module 22, for sending the data to receiving terminal, the use carried in the AGCT periods is utilized by receiving terminal
The Gain Automatic control of receiving channel of this time slot is carried out in the training signal for carrying out AGC.
In the embodiment of the present invention, the AGCT periods include multiple training signal Training sig periods and difference
The adjustment Adjust periods corresponding with the multiple Training sig periods；Wherein, the length of the AGCT periods is based on
Length, the length of Adjust periods, Training sig periods and the quantity of Adjust periods of Training sig periods is common
With determination.
In the embodiment of the present invention, maximum translational speed of the length based on each equipment in network of Training sig periods is true
It is fixed；The length of Adjust periods is determined based on the response speed that receiving terminal adjusts receiving channel gain；The Training sig periods
With analog-digital converter ADC institute acceptable dynamic model of the quantity based on network dynamic scope and receiving terminal of Adjust periods
Enclose common determination.
In the embodiment of the present invention, the protection interval GP periods are also included in each time slot of the data.
In the embodiment of the present invention, the training signal for being used to carry out AGC carried in the AGCT periods is to use short sequence
What the mode of cyclic shift sequence spreading length was generated.
Wherein, the modules of apparatus of the present invention can be integrated in one, and can also be deployed separately.Above-mentioned module can be closed
And be a module, multiple submodule can also be further split into.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but in many cases, the former is more
Good embodiment.Understood based on such, what technical scheme substantially contributed to prior art in other words
Part can be embodied in the form of software product, and the computer software product is stored in a storage medium, if including
Dry instruction is to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Perform this hair
Method described in each bright embodiment.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module or stream in accompanying drawing
Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can be divided according to embodiment description
It is distributed in the device of embodiment, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
Disclosed above is only several specific embodiments of the present invention, and still, the present invention is not limited to this, any ability
What the technical staff in domain can think change should all fall into protection scope of the present invention.
Claims (20)
1. a kind of receiving channel automatic controlling method for gain, it is characterised in that this method includes：
Receiving terminal receives the data from transmitting terminal, when each time slot of the data includes automatic growth control training AGCT
Section and data PDATA periods；Wherein, the AGCT periods include the training signal for being used to carry out automatic growth control AGC, institute
Stating the PDATA periods includes data content；
The reception that the receiving terminal utilizes the training signal for carrying out AGC carried in the AGCT periods to carry out this time slot is led to
The Gain Automatic control in road；
The AGCT periods include multiple training signal Training sig periods and respectively with the multiple Training
The sig periods corresponding adjustment Adjust periods；Wherein, length of the length based on the Training sig periods of the AGCT periods
Degree, the length of Adjust periods, Training sig periods and the quantity of Adjust periods are determined jointly.
2. the method as described in claim 1, it is characterised in that the AGCT periods include the Trainingsig periods and
Adjust periods, the receiving terminal utilizes the training signal for being used to carry out AGC carried in the AGCT periods to carry out this time slot
The Gain Automatic control of receiving channel, including：
The receiving terminal is using in all reception signal of change Training sig periods in the Training sig periods
The mean power of signal, and by the mean power and desire to enter into analog-digital converter ADC target received power it
Between mathematic interpolation obtain receiving channel gain, and the receiving channel gain obtained using calculating is adjusted within the Adjust periods
The receiving channel gain of whole time slot.
3. method as claimed in claim 1 or 2, it is characterised in that the AGCT periods include multiple Training sig
Period and respectively Adjust periods corresponding with the multiple Training sig periods, the receiving terminal utilize the AGCT
The training signal for carrying out AGC carried in period carries out the Gain Automatic control of receiving channel of this time slot, specifically includes：
Step A, the receiving terminal utilize all reception signal of change Training in first Training sig period
The mean power of signal in the sig periods, and utilize the mean power in the Training sig periods and the mesh for desiring to enter into ADC
Mathematic interpolation between mark received signal power obtains receiving channel gain；
Step B, the receiving terminal judge currently to calculate whether obtained receiving channel gain is receiving channel in zone of reasonableness
Gain；If it is not, then performing step C；If it is, performing step F；
Step C, the receiving terminal judge whether also there is next Training after the current Training sig periods
The sig periods；If it is, performing step D；If it is not, then performing step G；
Step D, the receiving terminal are using Gain tuning step-length in the current Training sig periods corresponding Adjust periods
The interior receiving channel gain for adjusting this time slot, performs step E afterwards；
This is next using all reception signal of change in next Training sig periods for step E, the receiving terminal
The mean power of signal in the Training sig periods, and using the mean power in next Training sig periods with
The mathematic interpolation desired to enter between ADC target received power obtains receiving channel gain；Step B is performed afterwards；
The receiving channel gain that step F, the receiving terminal are obtained using currently calculating is in current Trainingsig periods correspondence
The Adjust periods in adjust the receiving channel gain of this time slot, and terminate flow；
Step G, the receiving terminal confirm the receiving channel Gain tuning failure of this time slot, and terminate flow.
4. the method as described in claim 1, it is characterised in that
Maximum translational speed of the length of Training sig periods based on each equipment in network is determined；
The length of Adjust periods is determined based on the response speed that receiving terminal adjusts receiving channel gain；
Analog-digital converter of the quantity of Training sig periods and Adjust periods based on network dynamic scope and receiving terminal
The acceptable dynamic range of ADC institutes is determined jointly.
5. the method as described in claim 1, it is characterised in that when also including protection interval GP in each time slot of the data
Section.
6. the method as described in claim 1, it is characterised in that the training for being used to carry out AGC carried in the AGCT periods
Signal is what is generated by the way of short sequence cyclic shift sequence spreading length.
7. a kind of receiving channel automatic controlling method for gain, it is characterised in that this method includes：
Transmitting terminal generation needs to be sent to the data of receiving terminal, and each time slot of the data includes automatic growth control training
AGCT periods and data PDATA periods, the AGCT periods include the training signal for being used to carry out automatic growth control AGC,
The PDATA periods include data content；
The transmitting terminal sends the data to receiving terminal, utilizes what is carried in the AGCT periods to be used for by the receiving terminal
The training signal for carrying out AGC carries out the Gain Automatic control of receiving channel of this time slot；
Wherein, the AGCT periods include multiple training signal Training sig periods and respectively with it is the multiple
The Training sig periods corresponding adjustment Adjust periods；Wherein, the length of the AGCT periods is based on Training sig
Length, the length of Adjust periods, Training sig periods and the quantity of Adjust periods of period is determined jointly.
8. method as claimed in claim 7, it is characterised in that
Maximum translational speed of the length of Training sig periods based on each equipment in network is determined；
The length of Adjust periods is determined based on the response speed that receiving terminal adjusts receiving channel gain；
Analog-digital converter of the quantity of Training sig periods and Adjust periods based on network dynamic scope and receiving terminal
The acceptable dynamic range of ADC institutes is determined jointly.
9. method as claimed in claim 7, it is characterised in that when also including protection interval GP in each time slot of the data
Section.
10. method as claimed in claim 7, it is characterised in that the training for being used to carry out AGC carried in the AGCT periods
Signal is to be generated by the way of short sequence cyclic shift sequence spreading length.
11. a kind of receiving terminal, it is characterised in that the receiving terminal includes：
Receiving module, for receiving the data from transmitting terminal, each time slot of the data includes automatic growth control instruction
Practice AGCT periods and data PDATA periods；The AGCT periods include the training letter for being used to carry out automatic growth control AGC
Number, the PDATA periods include data content；
Control module, for carrying out connecing for this time slot using the training signal for being used to carry out AGC carried in the AGCT periods
Channel gain is received to automatically control；
Wherein, the AGCT periods include multiple Training sig periods and respectively with the multiple Training sig
The period corresponding Adjust periods；Wherein, length of the length based on the Trainingsig periods of the AGCT periods, Adjust
Length, Training sig periods and the quantity of Adjust periods of period is determined jointly.
12. receiving terminal as claimed in claim 11, it is characterised in that
The control module, specifically for including training signal Training sig periods and adjustment when the AGCT periods
During Adjust periods, utilize in all reception signal of change Training sig periods in the Training sig periods and believe
Number mean power, and by the mean power and desire to enter between analog-digital converter ADC target received power
Mathematic interpolation obtain receiving channel gain, and the receiving channel gain obtained using calculating is adjusted within the Adjust periods
The receiving channel gain of this time slot.
13. the receiving terminal as described in claim 11 or 12, it is characterised in that
The control module, be further used for when the AGCT periods include multiple Training sig periods and respectively with
During corresponding Adjust periods the multiple Training sig periods, the reception of this time slot is further carried out as follows
Channel gain is automatically controlled：
Step A, using in the Training sig periods of all reception signal of change in first Training sig period
The mean power of signal, and believed using the mean power in the Training sig periods with desiring to enter into ADC intended recipient
Mathematic interpolation between number power obtains receiving channel gain；
Step B, judgement currently calculate whether obtained receiving channel gain is receiving channel gain in zone of reasonableness；If
It is no, then perform step C；If it is, performing step F；
Step C, judge whether also there is next Training sig periods after the current Training sig periods；If
It is then to perform step D；If it is not, then performing step G；
Step D, using Gain tuning step-length adjust this when within the current Training sig periods corresponding Adjust periods
The receiving channel gain of gap, performs step E afterwards；
Step E, utilize the next Training sig of all reception signal of change in next Training sig periods
The mean power of signal in period, and using the mean power in next Training sig periods and desire to enter into ADC
Target received power between mathematic interpolation obtain receiving channel gain；Step B is performed afterwards；
Step F, using currently calculating obtained receiving channel gain in current Training sig periods corresponding Adjust
The receiving channel gain of this time slot is adjusted in period, and terminates flow；
Step G, the receiving channel Gain tuning failure for confirming this time slot, and terminate flow.
14. receiving terminal as claimed in claim 11, it is characterised in that
Maximum translational speed of the length of Training sig periods based on each equipment in network is determined；
The length of Adjust periods is determined based on the response speed that receiving terminal adjusts receiving channel gain；
Analog-digital converter of the quantity of Training sig periods and Adjust periods based on network dynamic scope and receiving terminal
The acceptable dynamic range of ADC institutes is determined jointly.
15. receiving terminal as claimed in claim 11, it is characterised in that
Also include the protection interval GP periods in each time slot of the data.
16. receiving terminal as claimed in claim 11, it is characterised in that
The training signal for being used to carry out AGC carried in the AGCT periods is to use short sequence cyclic shift sequence spreading length
Mode generate.
17. a kind of transmitting terminal, it is characterised in that the transmitting terminal includes：
Generation module, needs to be sent to the data of receiving terminal, each time slot of the data includes automatic gain for generating
Controlled training AGCT periods and data PDATA periods, the AGCT periods include the training letter for being used to carry out automatic growth control AGC
Number, the PDATA periods include data content；
Sending module, for sending the data to receiving terminal, utilizes what is carried in the AGCT periods to be used for by receiving terminal
The training signal for carrying out AGC carries out the Gain Automatic control of receiving channel of this time slot；
Wherein, the AGCT periods include multiple training signal Training sig periods and respectively with it is the multiple
The Training sig periods corresponding adjustment Adjust periods；Wherein, the length of the AGCT periods is based on Training sig
Length, the length of Adjust periods, Training sig periods and the quantity of Adjust periods of period is determined jointly.
18. transmitting terminal as claimed in claim 17, it is characterised in that
Maximum translational speed of the length of Training sig periods based on each equipment in network is determined；
The length of Adjust periods is determined based on the response speed that receiving terminal adjusts receiving channel gain；
Analog-digital converter of the quantity of Training sig periods and Adjust periods based on network dynamic scope and receiving terminal
The acceptable dynamic range of ADC institutes is determined jointly.
19. transmitting terminal as claimed in claim 17, it is characterised in that
Also include the protection interval GP periods in each time slot of the data.
20. transmitting terminal as claimed in claim 17, it is characterised in that
The training signal for being used to carry out AGC carried in the AGCT periods is to use short sequence cyclic shift sequence spreading length
Mode generate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310148944.9A CN104125631B (en) | 2013-04-26 | 2013-04-26 | A kind of receiving channel automatic controlling method for gain and equipment |
| PCT/CN2014/073096 WO2014173207A1 (en) | 2013-04-26 | 2014-03-10 | Automatic gain control method and device for receive channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310148944.9A CN104125631B (en) | 2013-04-26 | 2013-04-26 | A kind of receiving channel automatic controlling method for gain and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN104125631A CN104125631A (en) | 2014-10-29 |
| CN104125631B true CN104125631B (en) | 2017-09-19 |
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| CN201310148944.9A Active CN104125631B (en) | 2013-04-26 | 2013-04-26 | A kind of receiving channel automatic controlling method for gain and equipment |
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| CN (1) | CN104125631B (en) |
| WO (1) | WO2014173207A1 (en) |
Cited By (1)
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| CN109196803A (en) * | 2018-08-28 | 2019-01-11 | 北京小米移动软件有限公司 | The configuration method and device of protection interval |
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| CN105307216B (en) * | 2015-06-26 | 2019-02-12 | 哈尔滨工业大学深圳研究生院 | A kind of wireless resource allocation methods based on LTE car networking |
| CN107294670A (en) * | 2016-03-30 | 2017-10-24 | 联芯科技有限公司 | point-to-point communication method and system |
| CN108632854B (en) * | 2017-03-23 | 2019-08-16 | 电信科学技术研究院 | A kind of method for synchronizing time and communication equipment |
| CN110859006B (en) | 2018-08-24 | 2022-11-25 | 上海朗帛通信技术有限公司 | Method and device used in wireless communication node |
| CN113765531B (en) * | 2020-06-02 | 2022-08-16 | 广州海格通信集团股份有限公司 | Automatic gain control method and device for receiving link and computer equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104125631A (en) | 2014-10-29 |
| WO2014173207A1 (en) | 2014-10-30 |
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