CN108462977A - A kind of auto gain control method and device - Google Patents
A kind of auto gain control method and device Download PDFInfo
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- CN108462977A CN108462977A CN201710092177.2A CN201710092177A CN108462977A CN 108462977 A CN108462977 A CN 108462977A CN 201710092177 A CN201710092177 A CN 201710092177A CN 108462977 A CN108462977 A CN 108462977A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
- H04W28/0221—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices power availability or consumption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
Abstract
The embodiment of the invention discloses a kind of auto gain control methods, including：At the first moment, the first downlink signal from base station is received；Current working status based on user equipment, it is determining corresponding with reference to subframe in first downlink signal, and calculate the performance number with reference to subframe；The second moment after first moment receives the second downlink signal from base station；Based on the performance number with reference to subframe, automatic growth control is carried out to second downlink signal.The embodiment of the present invention also discloses a kind of automatic gain control equipment simultaneously.
Description
Technical field
The present invention relates to Internet of Things communication field more particularly to a kind of auto gain control methods and device.
Background technology
It is Internet of Things based on cellular narrowband Internet of Things (Narrow Band Internet of Thing, NB-IoT) technology
It is unstable to have the characteristics that signal amplitude changes using time-division system for the emerging technology in one, net field.
In NB-IoT communication process, using automatic growth control (Automatic Gain Control, AGC) technology pair
When radio frequency (Radio Frequency, RF) input signal that Internet of Things chip receives is handled, need first to select a reference
Signal power is as benchmark, and still, since NB-IoT is time-division system, whithin a period of time, the variation of signal amplitude is non-flat
Steady, the problem for being easy for occurring selecting reference signal power unreasonable, to may result in AGC gain controlling value very not
Stablize so that after carrying out AGC processing to input signal, RF input signals can not be basically stable to reasonable amplitude range
It is interior, in turn, easily there is the problem of signal spilling or dropout, influence the reception and demodulation of signal.
Therefore, it is the problem of present urgent need to resolve：How stable AGC gain controlling value is maintained in NB-IoT.
Invention content
In view of this, an embodiment of the present invention is intended to provide a kind of auto gain control method and device, can realize in NB-
The performance number for suitably referring to subframe is determined in IoT, to carry out automatic growth control, to realize the AGC gain control for remaining stable
Value processed avoids the occurrence of signal and overflows or the problem of dropout.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
In a first aspect, the embodiment of the present invention provides a kind of auto gain control method, including：At the first moment, receives and
The first downlink signal from base station；Current working status based on user equipment is determined in first downlink signal and is corresponded to
Reference subframe, and calculate the performance number with reference to subframe；The second moment after first moment receives and comes from base
The second downlink signal stood；Based on the performance number with reference to subframe, automatic growth control is carried out to second downlink signal.
Second aspect, the embodiment of the present invention provide a kind of automatic gain control equipment, including：First receiving unit calculates
Unit, the second receiving unit and control unit, wherein first receiving unit, at the first moment, receiving and coming from base
The first downlink signal stood；The computing unit is used for the current working status based on user equipment, believes in first downlink
It is determining corresponding with reference to subframe in number, and calculate the performance number with reference to subframe；Second receiving unit, for described
The second moment after first moment receives the second downlink signal from base station；Described control unit, for being based on the ginseng
The performance number for examining subframe carries out automatic growth control to second downlink signal.
An embodiment of the present invention provides a kind of auto gain control method and devices.First, user equipment is at the first moment,
After receiving the first downlink signal from base station, it will be able to according to the current working condition of user equipment, believe in the first downlink
It is determining corresponding with reference to subframe in number, and the performance number for referring to subframe is calculated, then, in user equipment in the second reception
To after the second downlink signal, so that it may to refer to the performance number of subframe based on this, automatic growth control is carried out to the second downlink signal.
In this way, when this method is applied in NB-IoT, so that it may according to the current working condition of user equipment, to believe from first frame downlink
The performance number of the reference subframe suitably for carrying out AGC processing is determined in number, then, it will be able in NB-IoT communication process
It is middle to maintain stable AGC gain controlling value, to which RF input signals can be basically stable to reasonable amplitude by AGC processing
In range, avoids the occurrence of signal and overflow or the problem of dropout.
Description of the drawings
Fig. 1-1 is the flow diagram of the auto gain control method in the embodiment of the present invention one；
Fig. 1-2 to Fig. 1-4 is the schematic diagram of the power statistic of the reference subframe in the embodiment of the present invention one；
Fig. 2 is the flow diagram of the auto gain control method in the embodiment of the present invention two；
Fig. 3 is the flow diagram of the auto gain control method in the embodiment of the present invention three；
Fig. 4 is the structural schematic diagram of the automatic gain control equipment in the embodiment of the present invention four.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes.
In order to maintain stable AGC gain controlling value during communicating based on NB-IoT, avoid overflowing due to signal
Or the problems such as dropout, influences the reception and demodulation of signal, the embodiment of the present invention provides a kind of auto gain control method,
In practical applications, this method can be applied to the field that user equipment in NB-IoT communication systems needs realization automatic growth control
It closes.
Embodiment one
So, Fig. 1-1 is the flow diagram of the auto gain control method in the embodiment of the present invention one, referring to Fig. 1-1
Shown, which includes：
S101：At the first moment, the first downlink signal from base station is received；
Specifically, during user equipment is communicated with base station based on NB-IoT, user equipment can be at first
It carves, the first downlink signal from base station is received by antenna.In this way, after user equipment captures the first downlink signal,
User equipment can be based on the first downlink signal, to determine the performance number of the reference subframe for carrying out AGC processing, so as to
Automatic growth control is carried out to the second downlink signal received by the second moment of the user equipment after the first moment.
S102：Current working status based on user equipment, it is determining corresponding with reference to subframe in the first downlink signal, and
Calculate the performance number with reference to subframe；
Specifically, in order to determine suitably to be used as benchmark with reference to the performance number of subframe to AGC processing, it is contemplated that NB-
IoT communication systems are time-division systems, and whithin a period of time, the variation of signal amplitude is non-steady feature, is connect in user equipment
After receiving the first downlink signal, the working condition that user equipment can be first presently according to itself, from the first downlink signal
Determine it is suitably corresponding with current working status refer to subframe, then calculate the performance number for referring to subframe, so as to
Subsequently the performance number with this with reference to subframe to be to carry out automatic growth control, realizes and remains stable in NB-IoT communication process
AGC gain controlling value.
In practical applications, whether the current working status of above-mentioned user equipment can be currently according to user equipment
Down-going synchronous state, at this point, the current working status of user equipment can be in non-down-going synchronous state, also may be used come what is classified
To be to be in down-going synchronous state.Certainly, the current working status of user equipment can also be classified using other modes, this
In, the embodiment of the present invention is not specifically limited.
In specific implementation process, according to the difference of the current working status of user equipment, above-mentioned S102 can with and it is unlimited
In including following two embodiments.
First way, S102 may include：When determining that user equipment is currently at non-down-going synchronous state, according to default
Time span value, from the first downlink signal obtain anticipation signal；Calculate the performance number in each subframe in anticipation signal；
The maximum subframe of performance number in each subframe is determined as to refer to subframe.
Specifically, when being in non-down-going synchronous state due to user equipment, not timing synchronisation information, virtual frames may be from
Any position starts, and how to select reasonably to refer to subframe just becomes very difficult.So, to solve the above-mentioned problems, user
Equipment can be when the working condition for determining itself be currently at non-down-going synchronous state, when to being preset in the first downlink signal
Between each subframe in span value carry out power statistic, and the maximum subframe of performance number in these subframes is selected to be used as with reference to sub
Frame is estimated for AGC power.
Here, preset time span value can be 5ms, 10ms etc., by those skilled in the art in specific implementation process,
When being in non-down-going synchronous state according to user equipment in NB-IoT, the week often signaled in the downlink signal that base station issues
Phase, property etc. carry out sets itself, and the embodiment of the present invention is not specifically limited.
Illustratively, for NB-IOT, on main carrier, in a radio frames, primary synchronization signal (Primary
Synchronization Signal, PSS) sending cycle be 5ms, the PSS signals sent every time are identical, it means that
In the 5ms times, total there are one subframe, there are PSS signals.Therefore, above-mentioned preset time span value can be set to 5ms,
Power statistic can be carried out to 5 subframes, and will wherein the strongest subframe of power be determined as with reference to son respectively within the scope of 5ms
Frame is estimated for AGC power.In addition, illustratively, for NB-IOT, secondary synchronization signal (Secondary
Synchronization Signal, SSS) sending cycle also be 5ms, still, at interval of 10ms send SSS signals it is complete
It is identical, accordingly it is also possible to set above-mentioned preset time span value to 10ms.
It should be noted that those skilled in the art are in the above-mentioned preset time span value of sets itself, it should be noted that above-mentioned
Preset time span value can not be too big, is convergence rate there are one performance indicator, when above-mentioned pre- because for AGC
If time span value is excessive, AGC convergence times can be made too long, it is slow to may result in AGC convergences, in turn, be unsatisfactory for be
The performance requirement of system.
The second way, S102 may include：When determining that user equipment is currently at down-going synchronous state, according to default plan
Slightly, the corresponding reference signal of user equipment current working phase is determined；Determine that reference signal corresponds in the first downlink signal
Subframe, and by the corresponding subframe of reference signal be determined as refer to subframe.
In practical applications, although user equipment is in down-going synchronous state, timing synchronisation information, use
When different operating stage of the family equipment in down-going synchronous state, the normal signalling that can be received is distinguishing, therefore, is
It is better to maintain stable AGC gain controlling value, AGC convergence times are reduced, AGC convergence rates are improved, user equipment needs
First according to preset strategy, corresponding reference signal is selected for different working stages, is then determined in the first downlink signal
Go out the subframe corresponding to the reference signal, is finally again determined as the corresponding subframe of this reference signal to refer to subframe.
In specific implementation process, above-mentioned preset strategy can with and be not limited to include following two situations.
The first, in order to synchronize convenience, save the time, preset strategy can be when user equipment is in down-going synchronous state
In paging (Paging) stage when, SSS signals are determined as reference signal.
In practical applications, before being paged, therefore the presynchronization for first having to carry out SSS signals is user equipment
Synchronize conveniently, save the time, when user equipment be in the Paging stages in down-going synchronous state, so that it may with adjoint SSS
The reception of signal, the reference signal adjusted using SSS as AGC.
Second, preset strategy is when user equipment is in the access phase in down-going synchronous state, in preset duration
It is interior, detect whether that there are Physical Downlink Shared Channel (Physical Downlink Shared in the first downlink signal
CHannel, PDSCH) signal；If detecting PDSCH signals in preset duration, PDSCH signals are determined as with reference to letter
Number；Otherwise, PSS signals or SSS signals are determined as reference signal.
In practical applications, user equipment is when user equipment is in the access phase in down-going synchronous state, it is contemplated that
User equipment may receive subcarrier rather than main carrier, at this point, in order to improve the convergence rate of AGC processing, may be used
PDSCH signals are used as the reference signal of AGC processing.But do not have after user equipment receives PDSCH signals for a period of time
Thus PDSCH signals at this point, the power for the downlink signal that user equipment receives may have greatly changed, and cause
The problem of reception, then, in order to preferably maintain stable AGC gain controlling value, user equipment can be when detecting default
There are reference signals when PDSCH signals, adjusted as AGC using PDSCH signals in length；Further, user equipment can be with
When confirming in preset duration without PDSCH signals, it is necessary to switch to main carrier, receive PSS signals or SSS signals
Be used as reference signal, so as to AGC gain controlling value is adjusted to reasonable range in.
It is, of course, also possible to there are other preset strategies, such as when user equipment is in the paging rank in down-going synchronous state
PSS signals are determined as reference signal by Duan Shi；Alternatively, when user equipment is in the access phase in down-going synchronous state, no
It detects whether there are PDSCH signals, PSS signals is determined as reference signal, here, the embodiment of the present invention is not specifically limited.
In an alternative embodiment of the invention, in order to accurately calculate the performance number with reference to subframe, S102 may include：To reference
Subframe is segmented, and at least two set of symbols are obtained；Calculate separately the performance number of at least two set of symbols；By at least two symbols
The maximum performance number being determined as with reference to subframe in the performance number of group.
Specifically, in practical applications, in order to accurately calculate the performance number with reference to subframe, the work(to a subframe can be used
The mode of rate estimating window segmentation, is divided into several sections, respectively to every section of corresponding set of symbols by the power estimating window in a subframe
It is independent carry out power statistic, and select wherein prominent represent with reference to sub-frame power.
Illustratively, referring to shown in Fig. 1-2, for NB-IOT, it is assumed that carry PSS in reference the subframe determined and believe
Number.So, can be as shown in Figs. 1-3 in order to more accurately calculate the performance number with reference to subframe, to what is be segmented with reference to subframe
Power statistic will be divided into three sections with reference to the symbol of the corresponding subframe lengths of subframe, obtain three set of symbols, every section of use
1/3 subframe, about 4.67 symbols, then by the way of power estimating window, independently to count the work(of each set of symbols
Rate value, then, since the total length of PSS signals is 11 symbols, it means that total there are one power estimating window data segment is complete
It falls on PSS signals.
It should be noted that referring to shown in Fig. 1-4, if the power statistic not being segmented to referring to subframe, one
The power estimating window of a subframe is possible to comprising whole PSS signals, it is also possible to only PSS signals comprising half or more
It is few, it means that the performance number of the reference subframe under non-down-going synchronous state for carrying out AGC processing is unstable, thus,
It also results in that AGC gain controlling value is also unstable, influences the performance of AGC processing.
Here, those skilled in the art are when being segmented above-mentioned reference subframe, specific number of fragments, sector boss
Degree, can be by those skilled in the art in the specific implementation come according to debugging result sets itself, the embodiment of the present invention is not done specifically
It limits.It should be noted that this segmentation cannot be too short, and if too short, then because sample rate is low, the reference subframe counted
Performance number it is inevitable inaccurate.But segmentation can not be too long, if segmentation is too long, may cause in power estimating window only
Part signal, so as to cause being calculated with reference to the performance number of subframe, there are deviations.
In specific implementation process, it can be come true by way of judging whether user equipment completes cell search process
Determine the current working condition of user equipment.Specifically, when user equipment does not complete cell search process, so that it may to determine user
Equipment is currently at non-down-going synchronous state；And after user equipment has completed cell search process, so that it may to determine user
Equipment is currently at down-going synchronous state.It is, of course, also possible to determine the current working condition of user equipment using other modes,
It is determined in specific implementation process by those skilled in the art, here, the embodiment of the present invention is not specifically limited.
After executing S102, user equipment can execute S103 to S104 to complete automatic gain control process.
S103：The second moment after the first moment receives the second downlink signal from base station；
Here, in order to use the performance number of the reference subframe calculated by the first downlink signal come to the second downlink signal carry out
AGC processing adjusts the signal strength of the second downlink signal, then, user equipment will be corresponding in the first downlink signal of reception
The second moment after first moment just receives the second downlink signal.
S104：Based on the performance number with reference to subframe, automatic growth control is carried out to the second downlink signal.
Specifically, the performance number of the reference subframe calculated by the first downlink signal is obtained in user equipment, and user sets
At standby the second moment after the first moment, after also receiving the second downlink signal from base station, user equipment can base
In the above-mentioned performance number with reference to subframe, automatic growth control is carried out to second downlink signal.
So far, automatic gain control process is just completed.
As shown in the above, auto gain control method provided in an embodiment of the present invention, first, user equipment is first
After moment receives the first downlink signal from base station, so that it may with according to the current working status of itself, in first downlink
Determined in signal it is corresponding refer to subframe, and calculate this refer to subframe performance number, then, user equipment is at the first moment
The second moment later will be based on the performance number with reference to subframe to this after receiving the second downlink signal from base station
Second downlink signal carries out automatic growth control.In this way, in NB-IoT communication process, using the auto gain control method,
User equipment can determine suitably to refer to subframe according to the current working status of itself, to, it will be able to it is closed
The performance number of suitable reference subframe carries out automatic growth control.So, user equipment can be in NB-IoT communication process
Stable AGC gain controlling value is maintained, to which RF input signals can be basically stable to reasonable amplitude model by AGC processing
In enclosing, avoids the occurrence of signal and overflow or the problem of dropout.
Embodiment two
Based on previous embodiment, in practical applications, it is assumed that the current working status of user equipment is to pass through user equipment
Be presently at non-down-going synchronous state, be in down-going synchronous state to distinguish, at this point, the present embodiment provides it is a kind of from
Dynamic gain control method, shown in Figure 2, which includes：
S201：At the first moment, the first downlink signal from base station is received；
S202：Judge that the current working status of user equipment is to be in non-down-going synchronous state, is in down-going synchronous
State；
Specifically, it when user equipment determines that the current working status of itself is in non-down-going synchronous state, executes
S203 to S205 is determined with reference to subframe, alternatively, when user equipment determines that itself current working status is to be in down-going synchronous
When state, S206 to S207 is executed to determine with reference to subframe.
S203：According to preset time span value, anticipation signal is obtained from the first downlink signal；
S204：Calculate the performance number in each subframe in anticipation signal；
S205：The maximum subframe of performance number in each subframe is determined as to refer to subframe；
Here, it performs S205 in user equipment and determines that user equipment can execute S208 extremely with reference to after subframe
S210。
S206：According to preset strategy, the corresponding reference signal of user equipment current working phase is determined；
S207：The corresponding subframe of reference signal is determined in the first downlink signal, and the corresponding subframe of reference signal is true
It is set to and refers to subframe；
Here, it performs S208 in user equipment and determines that user equipment can execute S208 extremely with reference to after subframe
S210。
S208：Calculate the performance number with reference to subframe；
S209：The second moment after the first moment receives the second downlink signal from base station；
S210：Based on the performance number with reference to subframe, automatic growth control is carried out to the second downlink signal.
Auto gain control method provided in this embodiment receives the first downlink signal from base station in user equipment
Afterwards, user equipment can according to itself current working condition, determine suitably refer to subframe performance number, then, with
After family equipment receives the second downlink signal, automatic gain can be carried out based on the second downlink signal of performance number pair with reference to subframe
Control.To so that when user equipment is in non-down-going synchronous state and down-going synchronous state, with corresponding with reference to subframe
On the basis of performance number, reliable and stable AGC gain controlling value can be obtained, in this way, when handling the second downlink signal,
The problem of signal spilling or dropout can be avoided the occurrence of.
Embodiment three
Based on previous embodiment, in practical applications, when user equipment is when being presently at down-going synchronous state, can also
There are different working stages, such as page phase, access phase, therefore, it is also desirable to which it is to be in further discriminate between user equipment
Page phase in down-going synchronous state, the access phase being in down-going synchronous state, at this point, the present embodiment provides one
Kind auto gain control method, shown in Figure 4, which includes：
S301：At the first moment, the first downlink signal from base station is received；
After user equipment receives the first downlink signal, if the user equipment determine that the current working status of itself is in
Down-going synchronous state, it is possible to execute S302.
S302：Judge that user equipment is the page phase in down-going synchronous state, is in down-going synchronous state
In access phase；
In practical applications, in order to preferably maintain stable AGC gain controlling value, working as itself is determined in user equipment
When preceding working condition is in down-going synchronous state, need first to judge the page phase that user equipment is in down-going synchronous state,
Then the access phase being in down-going synchronous state selects corresponding reference signal, tool for different working stages
Body executes S303 to determine reference signal when user equipment is in the page phase in down-going synchronous state, and, when with
When family equipment is in the access phase in down-going synchronous state, S304 is executed to determine reference signal.
S303：SSS signals are determined as reference signal；
After performing S303, so that it may to execute S307 to S310.
S304：In preset duration, detect whether that there are PDSCH signals in the first downlink signal；
If user equipment in preset duration, PDSCH signals is detected in the first downlink signal, then execute S305；
Otherwise, S306 is executed.
S305：PDSCH signals are determined as reference signal；
S306：PSS signals or SSS signals are determined as reference signal；
After performing S305 or S306, so that it may to execute S307 to S310.
S307：The corresponding subframe of reference signal is determined as to refer to subframe；
S308：Calculate the performance number with reference to subframe；
S309：The second moment after the first moment receives the second downlink signal from base station；
S310：Based on the performance number with reference to subframe, automatic growth control is carried out to the second downlink signal.
Auto gain control method provided in this embodiment receives the first downlink signal from base station in user equipment
Afterwards, when determining that user equipment is in down-going synchronous state, user equipment can first judge itself to be currently at down-going synchronous state
In page phase, the access phase being in down-going synchronous state；Then, when determining in page phase, user
SSS signals can be determined as reference signal by equipment；And when determine in access phase when, user equipment can in preset duration,
Detect whether that there are PDSCH signals in the first downlink signal, if it is present PDSCH signals are determined as reference signal, it is no
Then, PSS signals or SSS signals are determined as reference signal；Finally, user equipment will determine the corresponding subframe of reference signal
To refer to subframe, then calculate the performance number with reference to subframe.Thus, can after user equipment receives the second downlink signal
Automatic growth control is carried out based on the second downlink signal of performance number pair with reference to subframe.In this way, when to be in downlink same for user equipment
When step state, user equipment can be obtained according to the current working phase of itself, to determine suitable reference signal with reference to letter
Number corresponding performance number with reference to subframe, in turn so that when user equipment is in down-going synchronous state, with the work(with reference to subframe
On the basis of rate value, reliable and stable AGC gain controlling value can be obtained, in this way, when handling the second downlink signal, just
The problem of signal spilling or dropout can be avoided the occurrence of.
Example IV
Based on same inventive concept, the present embodiment provides a kind of automatic gain control equipments.Fig. 4 is the embodiment of the present invention four
In automatic gain control equipment structural schematic diagram, shown in Figure 4, which includes：First connects
Receive unit 401, computing unit 402, the second receiving unit 403 and control unit 404；Wherein, the first receiving unit 401 is used
In at the first moment, the first downlink signal from base station is received；Computing unit 402 is used for the current work based on user equipment
Make state, it is determining corresponding with reference to subframe in the first downlink signal, and calculate the performance number with reference to subframe；Second receiving unit
403, for the second moment after the first moment, receive the second downlink signal from base station；Control unit 404, is used for
Based on the performance number with reference to subframe, automatic growth control is carried out to the second downlink signal.
Further, computing unit, when being additionally operable to determine that user equipment is currently at non-down-going synchronous state, according to default
Time span value, from the first downlink signal obtain anticipation signal；Calculate the performance number in each subframe in anticipation signal；
The maximum subframe of performance number in each subframe is determined as to refer to subframe.
Further, computing unit, when being additionally operable to determine that user equipment is currently at down-going synchronous state, according to default plan
Slightly, the corresponding reference signal of user equipment current working phase is determined；Determine that reference signal corresponds in the first downlink signal
Subframe, and by the corresponding subframe of reference signal be determined as refer to subframe.
Further, computing unit is additionally operable to when user equipment is in the page phase in down-going synchronous state, will be auxiliary
Synchronizing signal SSS is determined as reference signal；Alternatively, being additionally operable to the access phase being in when user equipment in down-going synchronous state
When, in preset duration, detect whether that there are Physical Downlink Shared Channel PDSCH signals in the first downlink signal；If
PDSCH signals are detected in preset duration, then PDSCH signals are determined as reference signal；Otherwise, by primary synchronization signal PSS or
SSS signals are determined as reference signal.
Further, computing unit is additionally operable to, to being segmented with reference to subframe, obtain at least two set of symbols；It counts respectively
Calculate the performance number of at least two set of symbols；By the maximum power being determined as with reference to subframe in the performance number of at least two set of symbols
Value.
In practical applications, above-mentioned first receiving unit and the second receiving unit can be by realizations such as antenna, transceivers.
Above-mentioned computing unit and control unit can be by central processing unit (CPU, Central Processing Unit), microprocessors
Device (MPU, Micro Processor Unit), digital signal processor (DSP, Digital Signal Processor) or
The realizations such as field programmable gate array (FPGA, Field Programmable Gate Array).
It need to be noted that be：The description of apparatus above embodiment, be with the description of above method embodiment it is similar,
With the similar advantageous effect of same embodiment of the method, therefore do not repeat.For undisclosed skill in apparatus of the present invention embodiment
Art details please refers to the description of the method for the present invention embodiment and understands, to save length, therefore repeats no more.
It need to be noted that be：
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic includes at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction
" in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific feature, knots
Structure or characteristic can in any suitable manner combine in one or more embodiments.It should be understood that in the various implementations of the present invention
In example, size of the sequence numbers of the above procedures is not meant that the order of the execution order, and the execution sequence of each process should be with its work(
It can determine that the implementation process of the embodiments of the invention shall not be constituted with any limitation with internal logic.The embodiments of the present invention
Serial number is for illustration only, can not represent the quality of embodiment.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements include not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
There is also other identical elements in the process of element, method, article or device.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.Apparatus embodiments described above are merely indicative, for example, the division of the unit, only
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as：Multiple units or component can combine, or
It is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed each composition portion
It can be the INDIRECT COUPLING by some interfaces, equipment or unit to divide mutual coupling or direct-coupling or communication connection
Or communication connection, can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be and be physically separated, aobvious as unit
The component shown can be or may not be physical unit；Both it can be located at a place, may be distributed over multiple network lists
In member；Some or all of wherein unit can be selected according to the actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing unit, also may be used
It, can also be during two or more units be integrated in one unit to be each unit individually as a unit；It is above-mentioned
The form that hardware had both may be used in integrated unit is realized, can also be realized in the form of hardware adds SFU software functional unit.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in computer read/write memory medium, which exists
When execution, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes：Movable storage device read-only is deposited
The various media that can store program code such as reservoir (Read Only Memory, ROM), magnetic disc or CD.
If alternatively, the above-mentioned integrated unit of the present invention is realized in the form of software function module and as independent product
Sale in use, can also be stored in a computer read/write memory medium.Based on this understanding, the present invention is implemented
Substantially the part that contributes to existing technology can be expressed in the form of software products the technical solution of example in other words,
The computer software product is stored in a storage medium, including some instructions are used so that computer equipment (can be with
It is personal computer, server or network equipment etc.) execute all or part of each embodiment the method for the present invention.
And storage medium above-mentioned includes：Various Jie that can store program code such as movable storage device, ROM, magnetic disc or CD
Matter.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of auto gain control method, which is characterized in that the method includes：
At the first moment, the first downlink signal from base station is received；
Current working status based on user equipment, it is determining corresponding with reference to subframe in first downlink signal, and calculate
The performance number with reference to subframe；
The second moment after first moment receives the second downlink signal from base station；
Based on the performance number with reference to subframe, automatic growth control is carried out to second downlink signal.
2. according to the method described in claim 1, it is characterized in that, the current working status based on user equipment, in institute
It is corresponding with reference to subframe to state determination in the first downlink signal, including：
When determining that the user equipment is currently at non-down-going synchronous state, according to preset time span value, from described first
Anticipation signal is obtained in downlink signal；
Calculate the performance number in each subframe in the anticipation signal；
The maximum subframe of performance number in each described subframe is determined as described with reference to subframe.
3. according to the method described in claim 1, it is characterized in that, the current working status based on user equipment, in institute
It is corresponding with reference to subframe to state determination in the first downlink signal, including：
When determining that the user equipment is currently at down-going synchronous state, according to preset strategy, determine that the user equipment is worked as
The corresponding reference signal of preceding working stage；
Determine the corresponding subframe of the reference signal in first downlink signal, and by the corresponding subframe of the reference signal
It is determined as described with reference to subframe.
4. according to the method described in claim 3, it is characterized in that, the determination user equipment is currently at down-going synchronous
When state, according to preset strategy, the corresponding reference signal of the user equipment current working phase is determined, including：
When the user equipment is in the page phase in down-going synchronous state, secondary synchronization signal SSS is determined as the ginseng
Examine signal；
Alternatively,
When the user equipment is in the access phase in down-going synchronous state, in preset duration, in first downlink
Detect whether that there are Physical Downlink Shared Channel PDSCH signals in signal；If detecting PDSCH signals in preset duration,
The PDSCH signals are then determined as the reference signal；Otherwise, primary synchronization signal PSS or SSS signal is determined as the ginseng
Examine signal.
5. according to the method described in claim 1, it is characterized in that, the calculating performance number with reference to subframe, including：
It is segmented with reference to subframe to described, obtains at least two set of symbols；
Calculate separately the performance number of at least two set of symbols；
It is determined as the performance number with reference to subframe by maximum in the performance number of at least two set of symbols.
6. a kind of automatic gain control equipment, which is characterized in that described device includes：First receiving unit, computing unit, second
Receiving unit and control unit, wherein
First receiving unit, at the first moment, receiving the first downlink signal from base station；
The computing unit is used for the current working status based on user equipment, determines and corresponds in first downlink signal
Reference subframe, and calculate the performance number with reference to subframe；
Second receiving unit receives the second downlink from base station for the second moment after first moment
Signal；
Described control unit, for based on the performance number with reference to subframe, automatic gain to be carried out to second downlink signal
Control.
7. device according to claim 6, which is characterized in that the computing unit is additionally operable to determine the user equipment
When being currently at non-down-going synchronous state, according to preset time span value, anticipation letter is obtained from first downlink signal
Number；Calculate the performance number in each subframe in the anticipation signal；By the maximum subframe of performance number in each described subframe
It is determined as described with reference to subframe.
8. device according to claim 6, which is characterized in that the computing unit is additionally operable to determine the user equipment
When being currently at down-going synchronous state, according to preset strategy, the corresponding reference of the user equipment current working phase is determined
Signal；Determine the corresponding subframe of the reference signal in first downlink signal, and by the corresponding son of the reference signal
Frame is determined as described with reference to subframe.
9. device according to claim 8, which is characterized in that the computing unit is additionally operable at the user equipment
When page phase in down-going synchronous state, secondary synchronization signal SSS is determined as the reference signal；Alternatively, being additionally operable to work as
When the user equipment is in the access phase in down-going synchronous state, in preset duration, in first downlink signal
Detect whether that there are Physical Downlink Shared Channel PDSCH signals；If detecting PDSCH signals in preset duration, by institute
It states PDSCH signals and is determined as the reference signal；Otherwise, primary synchronization signal PSS or SSS signal is determined as described with reference to letter
Number.
10. device according to claim 6, which is characterized in that the computing unit, be additionally operable to it is described with reference to subframe into
Row segmentation, obtains at least two set of symbols；Calculate separately the performance number of at least two set of symbols；Described at least two are accorded with
It is maximum in the performance number of number group to be determined as the performance number with reference to subframe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092177.2A CN108462977B (en) | 2017-02-21 | 2017-02-21 | Automatic gain control method and device |
| PCT/CN2017/099254 WO2018153043A1 (en) | 2017-02-21 | 2017-08-28 | Method and apparatus for automatic gain control, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092177.2A CN108462977B (en) | 2017-02-21 | 2017-02-21 | Automatic gain control method and device |
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| CN108462977A true CN108462977A (en) | 2018-08-28 |
| CN108462977B CN108462977B (en) | 2020-07-31 |
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| CN109547939A (en) * | 2018-11-14 | 2019-03-29 | 杭州电子科技大学 | Terricole track monitor terminal and working method based on NB-IOT |
| CN112187300B (en) * | 2019-07-05 | 2023-06-06 | 中兴通讯股份有限公司 | Gain adjustment control method, device, equipment and computer readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841633A (en) * | 2012-11-27 | 2014-06-04 | 中兴通讯股份有限公司 | TD-LTE automatic gain control method and device |
| WO2015018033A1 (en) * | 2013-08-08 | 2015-02-12 | Mediatek Inc. | Uplink power control in adaptive tdd systems |
| CN106034102A (en) * | 2015-03-16 | 2016-10-19 | 苏州简约纳电子有限公司 | LTE terminal reception gain adjustment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102348274B (en) * | 2010-07-30 | 2014-07-23 | 富士通株式会社 | Wireless communication terminal |
| EP2663140A1 (en) * | 2012-05-10 | 2013-11-13 | BlackBerry Limited | Power based gain control adjustment |
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- 2017-02-21 CN CN201710092177.2A patent/CN108462977B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841633A (en) * | 2012-11-27 | 2014-06-04 | 中兴通讯股份有限公司 | TD-LTE automatic gain control method and device |
| WO2015018033A1 (en) * | 2013-08-08 | 2015-02-12 | Mediatek Inc. | Uplink power control in adaptive tdd systems |
| CN106034102A (en) * | 2015-03-16 | 2016-10-19 | 苏州简约纳电子有限公司 | LTE terminal reception gain adjustment method |
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| WO2018153043A1 (en) | 2018-08-30 |
| CN108462977B (en) | 2020-07-31 |
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