CN104754720B - A kind of adjustment AGC method and apparatus - Google Patents

A kind of adjustment AGC method and apparatus Download PDF

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Publication number
CN104754720B
CN104754720B CN201310751412.4A CN201310751412A CN104754720B CN 104754720 B CN104754720 B CN 104754720B CN 201310751412 A CN201310751412 A CN 201310751412A CN 104754720 B CN104754720 B CN 104754720B
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slot
agc
present frame
value
time
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CN104754720A (en
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王欢
刘洪波
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Leadcore Technology Co Ltd
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Leadcore Technology Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

The present invention relates to the communications field, discloses a kind of adjustment AGC method and apparatus, can eliminate that the mistuning of AGC in GPRS/EDGE Traffic Channels under DTX scenes is whole, lifts the service feature under DTX scenes.Adjustment AGC method includes：Judge whether the time slot energy of the business time-slot in present frame is invalid；When the time slot energy is not invalid, the AGC value of time slot energy is calculated；When AGC be more than or equal to the gain of BCCH frequencies and default first thresholding and, and the value of demodulation soft bit sum is less than default second thresholding, simultaneously present frame for code block where it last frame when, by the AGC of present frame Traffic Channel be updated to the gain of BCCH frequencies and default first thresholding and；When AGC is unsatisfactory for any one condition in above-mentioned condition, the AGC of present frame Traffic Channel is updated to the AGC value according to time slot energy balane.

Description

A kind of adjustment AGC method and apparatus
Technical field
The present invention relates to the communications field, more particularly to a kind of adjustment AGC（Automatic Gain Control, it is automatic to increase Benefit control）Method and apparatus.
Background technology
The communication environment of wireless communication system is influenceed by geographical position, meteorological condition etc., and change is more frequent, and becomes Changing frequently communication environment would generally make it that the wireless communication signals for being transmitted into receiving terminal are faint, in order to clearly be sent out The wireless signal of end transmitting is penetrated, therefore, it is necessary to realizes AGC in receiving terminal.GPRS（General Packet Radio Service, GPRS）With EDGE (Enhanced Data Rate for GSM Evolution, enhanced number According to speed GSM evolution technologies) system is time-division system, wherein, GSM is global system for mobile communications, and English full name is Global System For Mobile Communications.Use DTX tactful in GPRS/EDGE, communication equipment can pass through DTX （Discontinuous Transmission, it is discontinuous to send）Strategy disturbs to reduce space, dispatches UE（User Equipment, user equipment）Resource, optimize power consumption performance.
In the GPRS/EDGE systems using DTX strategies, receiving terminal uses traditional multi-service channel AGC strategy, traditional more Traffic Channel AGC strategies are as shown in figure 1, in Fig. 1, slot（Time slot）2 and slot（Time slot）3 be network allocation in a data frame Two business time-slots.Under conventional traffic channel AGC strategies, the（N+1）The AGC of frame relies primarily on the business time-slot of nth frame The obtained AGC of energy balane of eating dishes without rice or wine, nth frame can be regarded as present frame, by（N+1）Frame regards the next frame of present frame as.
But under DTX environment, present frame slot3 may not have effective energy, in addition, passing through present frame business time-slot The gain that slot3 energy balane of eating dishes without rice or wine obtains is not necessarily suited for next frame, in this case, if will pass through present frame The gain A GC that business time-slot slot3 energy balane of eating dishes without rice or wine obtains is using in the next frame, it is possible to next frame can be caused to receive There is radio-frequency front-end processing module input signal saturation because gain is excessive in end, so as to the performance of effective data decoding failure occur Deterioration.In brief, traditional AGC strategies lack the protection mechanism to gain control, so as to cause to increase under some scenes Benefit adjustment loses control.
The content of the invention
It is an object of the invention to provide a kind of adjustment AGC method and apparatus, GPRS/ under DTX scenes can be eliminated AGC mistuning is whole in EDGE Traffic Channels, lifts the service feature under DTX scenes.
In order to solve the above technical problems, embodiments of the present invention provide a kind of side for adjusting automatic growth control AGC Method, including：
Judge whether the time slot energy of the business time-slot in present frame is invalid；
When the time slot energy for judging the business time-slot in the present frame is invalid, terminate；When in the judgement present frame The time slot energy of business time-slot when being not invalid, calculate the AGC value of the time slot energy；
Judge whether the AGC value meets all conditions in preparatory condition, the preparatory condition is：The AGC value is big In or equal to the gain of BCCH channel of broadcast control frequency and default first thresholding and, the demodulation soft bit of the business time-slot The value of sum is less than default second thresholding, the last frame of present frame code block where it；
When the AGC value meets all conditions in the preparatory condition, by the AGC value of the present frame Traffic Channel Be updated to the BCCH frequencies gain and default first thresholding and；When the AGC value is unsatisfactory in the preparatory condition During any one condition, the AGC value of the present frame Traffic Channel is updated to the AGC value according to the time slot energy balane.
Embodiments of the present invention also provide a kind of device for adjusting automatic growth control AGC, including：
First judging unit, for judging whether the time slot energy of the business time-slot in present frame is invalid；
Computing unit, for judging the time slot energy of the business time-slot in the present frame when first judging unit not When being invalid, the AGC value of the time slot energy is calculated；
Second judging unit, for judging whether the AGC value meets all conditions in preparatory condition, the default bar Part is：The AGC value be more than or equal to the gain of BCCH channel of broadcast control frequency and default first thresholding and, demodulate soft ratio The value of special sum is less than default second thresholding, and the present frame is the last frame of code block where the present frame；
Updating block, during for meeting all conditions in the preparatory condition when the AGC value, by the present frame industry The AGC value of business channel be updated to the gain of BCCH channel of broadcast control frequency and default first thresholding and；When the AGC value not When meeting any one condition in the preparatory condition, the AGC value of the present frame Traffic Channel is updated to according to The AGC value of time slot energy balane.
In terms of existing technologies, maximum difference is embodiment of the present invention, when the business time-slot in present frame Time slot energy when being not invalid, calculate the AGC of the time slot energy of the business time-slot of present frame；Then a guarantor is to the AGC Protection mechanism, the specific method of protection mechanism is judges whether the AGC meets preparatory condition, will when the AGC meets preparatory condition The AGC of present frame Traffic Channel be updated to the gain of BCCH channel of broadcast control frequency and default first thresholding and.Pass through guarantor Protection mechanism, present frame can be caused to obtain the AGC value in a zone of reasonableness so that the AGC that next frame uses is one reasonable In the range of AGC value, prevent next frame from receiving and because gain is excessive radio-frequency front-end processing module input signal saturation occur, so as to The occurrence of causing the penalty of valid data decoding failure.So as to effectively control GPRS/EDGE under DTX scenes AGC mistuning is whole in Traffic Channel, improves the service feature under the scene.
Preferably, in the time slot energy for judging the business time-slot in the present frame whether comprising it is invalid including：Will The demodulation soft bit of the business time-slot and value compared with default 3rd thresholding；When the value of the demodulation soft bit sum During less than three thresholding, judge that the time slot energy of business time-slot in the present frame is invalid；When the demodulation soft bit When the value of sum is more than or equal to three thresholding, the time slot energy for judging the business time-slot in the present frame is not invalid.
By this way to whether may judge in the time slot energy of business time-slot comprising valid data, letter is realized It is single, and certain accuracy can be ensured.
Preferably, before the whether invalid step of the time slot energy for judging the business time-slot in present frame, also wrap Include：Judge whether the present frame is frame under multi-service time slot scene；If it is determined that the frame under multi-service time slot scene, then Select the maximum business time-slot of the value that soft bit sum is demodulated in the business time-slot of the present frame；In the judgement present frame In the whether invalid step of the time slot energy of business time-slot, judge the whether invalid business time-slot of time slot energy, be the selection Business time-slot；If it is determined that the frame under single business time-slot scene, then when directly performing the business in the judgement present frame The whether invalid step of the time slot energy of gap.
When scene is multi-service time slot, increase the step of selecting business time-slot, select the value of demodulation soft bit sum most Big business time-slot carries out AGC calculating, can ensure performance as far as possible, avoid risk.
Preferably, after the AGC value of the present frame Traffic Channel is updated, methods described also includes：Described in preservation The AGC value of Traffic Channel.
After effective AGC value is calculated, the effective AGC value is saved, connect with doing next Traffic Channel That receives is standby.
Brief description of the drawings
Fig. 1 is traditional multi-service channel AGC strategy schematic diagram in the prior art；
Fig. 2 is the adjustment AGC of first embodiment of the invention method flow diagram；
Fig. 3 is the structural representation of the adjustment AGC of second embodiment of the invention device；
Fig. 4 be the adjustment AGC of second embodiment of the invention device in the first judging unit structural representation；
Fig. 5 is the structural representation of another adjustment AGC device in second embodiment of the invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, each reality below in conjunction with accompanying drawing to the present invention The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention, In order that reader more fully understands the application and proposes many ins and outs.But even if without these ins and outs and base Many variations and modification in following embodiment, each claim of the application technical side claimed can also be realized Case.
First embodiment of the invention provides a kind of adjustment AGC method, and this method is applied to GPRS scenes or EDGE fields Jing Zhong, as shown in Fig. 2 this method comprises the following steps：
201st, judge whether present frame is frame under multi-service time slot scene.
There can be multiple traffic frames under multi-service time slot scene in each frame, one is only existed in each frame under single business scenario Individual traffic frame.
When present frame is the frame under multi-service time slot scene, step 202 is performed；When present frame is single business time-slot scene Under frame when, due to only existing a business time-slot, therefore in the absence of the maximum business time-slot of the value of selection demodulation soft bit sum The step of, directly perform step 203.
202nd, the maximum business time-slot of the value that soft bit sum is demodulated in the business time-slot of present frame is selected.
Because data frame has multiple business time-slots in the scene of multi-service time slot, in order to obtain in this frame Traffic Channel Accurate AGC value, it is necessary first to select to demodulate the Traffic Channel of the value maximum of soft bit sum in multiple business time-slots, the demodulation is soft The maximum business time-slot of the value of bit sum is that maximum business time-slot is contributed AGC value in this frame, using the business time-slot when The AGC value that gap energy balane obtains is most accurate.
203rd, judge whether the value of the demodulation soft bit sum of business time-slot is more than or equal to default 3rd thresholding.
Default 3rd thresholding can be denoted as to TH3, the principle that TH3 is set as：The sum of the demodulation soft bit of the time slot Less than this threshold, it is believed that the time slot affirms no valid data.Specifically, when the value of demodulation soft bit sum is more than or equal to TH3 When, judge present frame in business time-slot time slot energy it is not necessarily invalid, i.e., may contain in the time slot energy of the business time-slot There is effective energy, effective energy is that have energy possessed by the time slot of valid data, and the effective energy is used to calculate next frame AGC, the performance of system can be improved, then perform step 204；When the value for demodulating soft bit sum is less than TH3, judge current The time slot energy of business time-slot in frame is invalid, i.e., without valid data, directly terminates.
204th, the AGC value of time slot energy is calculated.
AGC value according to the time slot energy balane time slot energy of business time-slot is prior art, and the present invention does not do superfluous herein State.
After the AGC of time slot energy is calculated, a gain protection is done to the AGC, specific determination methods are seen below The step of face, describes.
205th, judge whether the AGC meets all conditions in preparatory condition.
The judgement for increasing the step can be so that present frame obtains the AGC value in a zone of reasonableness, so that next Frame uses previous frame to calculate the AGC value in the zone of reasonableness of gained, can prevent next frame from receiving to go out because gain is excessive Existing radio-frequency front-end processing module input signal saturation, the occurrence of so as to cause the penalty of valid data decoding failure.
Step 205 specifically includes：The judgement of three following conditions is carried out simultaneously：Judge whether AGC is more than or equal to The gain of BCCH frequencies and default first thresholding and；Whether the value for judging to demodulate soft bit sum is less than default second thresholding； Judge present frame whether the last frame of code block where it.
BCCH frequency gains refer to the AGC for BCCH channel frequencies for meeting receiver optimal performance, can be by first Thresholding is denoted as TH1, the second thresholding is denoted as into TH2, TH1 setting principle is：Under proper network environment, if setting gain is more than mesh Mark yield value and be less than or equal to simultaneously（Target gain value+TH1）, can guarantee that time slot demodulation soft bit and meet threshold TH2； TH2 setting principle is：If it is higher than the threshold, then it is assumed that the time slot possesses valid data certainly.Wherein, target gain value refers to Meet the yield value of receiver optimal performance.
Judge whether present frame is where it the reason for last frame of code block：In the solution of the present invention, all can per frame To AGC carry out ineffectivity and renewal judge, in order to avoid because Traffic Channel frequency AGC and BCCH channel frequency AGC gaps it is too big And protected by mistake, and cause Traffic Channel AGC to fail always so that receiver demodulation performance reaches the second thresholding, so as to lead The situation that the long period can not recover to normally receive is caused, so three frames are not protected before each block, in last frame Do protection can enable protected when next block is received next block will not because the possible mistunings of this block are whole and There is signal saturation.
When AGC be more than or equal to the gain of BCCH frequencies and default first thresholding and, and the value of demodulation soft bit sum is small In default second thresholding, while present frame during the last frame of code block, judges that the AGC meets in preparatory condition where it All conditions.
When AGC be less than the gain of BCCH frequencies and default first thresholding and, or demodulate the value of soft bit sum and be more than or wait In default second thresholding, or when present frame is not the last frame of code block where it, judge that the AGC is unsatisfactory in preparatory condition All conditions.
When AGC meets all conditions in preparatory condition, step 206 is performed, otherwise, performs step 207.
206th, by the AGC of present frame Traffic Channel be updated to the gain of BCCH frequencies and default first thresholding and.
207th, the AGC of present frame Traffic Channel is updated to the AGC value according to the time slot energy balane.
Particularly, after the AGC of present frame Traffic Channel is updated, method also includes：Preserve the AGC of Traffic Channel. To do the standby of next Traffic Channel reception.
In terms of existing technologies, maximum difference is embodiment of the present invention, when the business time-slot in present frame Time slot energy when being not invalid, calculate the AGC of the time slot energy of the business time-slot of present frame；Then a guarantor is to the AGC Protection mechanism, the specific method of protection mechanism is judges whether the AGC meets preparatory condition, when the AGC meets preparatory condition, really Recognize that the AGC is effective, the AGC of present frame Traffic Channel is updated to the gain of BCCH channel of broadcast control frequency and default first The sum of limit.By protection mechanism, present frame can be caused to obtain the AGC value in a zone of reasonableness so that what next frame used AGC is the AGC value in a zone of reasonableness, prevents next frame from receiving and the input of radio-frequency front-end processing module occurs because gain is excessive Signal saturation, the occurrence of so as to cause the penalty of valid data decoding failure.So as to effectively control DTX fields AGC mistuning is whole in GPRS/EDGE Traffic Channels under scape, improves the service feature under the scene.
The step of various methods divide above, be intended merely to describe it is clear, can be merged into when realizing a step or Some steps are split, are decomposed into multiple steps, as long as including identical logical relation, all protection domain in this patent It is interior；To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm is not changed Core design with flow is all in the protection domain of the patent.
Second embodiment of the present invention is related to a kind of adjustment AGC device 30, applies single business in GPRS or EDGE In time slot scene, as shown in figure 3, the device includes：
First judging unit 301, for judging whether the time slot energy of the business time-slot in present frame is invalid.
Computing unit 302, for judging that the time slot energy of the business time-slot in present frame is not nothing when the first judging unit During effect, the AGC value of time slot energy is calculated.
Second judging unit 303, for judging whether AGC meets all conditions in preparatory condition, preparatory condition is： AGC be more than or equal to the gain of BCCH channel of broadcast control frequency and default first thresholding and, the value of demodulation soft bit sum is small In default second thresholding, present frame is the last frame of code block where present frame.
Updating block 304, for when AGC meets all conditions in preparatory condition, by the AGC of present frame Traffic Channel Be updated to the gain of BCCH channel of broadcast control frequency and default first thresholding and；When AGC is unsatisfactory for appointing in preparatory condition During what condition, the AGC of present frame Traffic Channel is updated to the AGC value according to time slot energy balane.
Particularly, the device also includes the 3rd judging unit 305 and selecting unit 306, wherein, the 3rd judging unit 305 For judging whether present frame is frame under multi-service time slot scene.
Selecting unit 306 be used for when the 3rd judging unit judge present frame for frame under multi-service time slot scene when, then select Select the business time-slot for the value maximum that soft bit sum is demodulated in the business time-slot of present frame.
The business time-slot that first judging unit 301 is also used for the selection of selecting unit 305 is judged；When the 3rd judgement Unit 305 judge present frame for frame under single business time-slot scene when, the first judging unit 301 is directly sentenced using present frame It is disconnected.
Further, as shown in figure 4, the first judging unit 301 includes following subelement：
Comparing subunit 3011, for by demodulate soft bit and value compared with default 3rd thresholding.
Subelement 3012 is judged, for when the value for demodulating soft bit sum is less than or equal to three thresholdings, judging present frame In business time-slot time slot energy it is invalid；When the value for demodulating soft bit sum is more than three thresholdings, the industry in present frame is judged The time slot energy of business time slot is not invalid.
Embodiment of the present invention in terms of existing technologies, when the time slot Energy Efficient of the business time-slot in present frame When, the AGC using the AGC that the time slot energy balane of the business time-slot according to the present frame obtains as present frame Traffic Channel； When the time slot energy of the business time-slot in present frame is invalid, the AGC using default AGC as present frame Traffic Channel, It can eliminate that the mistuning of AGC in GPRS/EDGE Traffic Channels under DTX scenes is whole, lift the service feature under DTX scenes.
Particularly, as shown in figure 5, the device also includes：
Storage unit 307, for preserving the AGC of Traffic Channel.
After the AGC of present frame Traffic Channel is updated, storage unit preserves the AGC of Traffic Channel, to do next industry Business channel receives standby.
In terms of existing technologies, maximum difference is embodiment of the present invention, when the first judging unit judges to work as When the time slot energy of business time-slot in previous frame is not invalid, computing unit calculates the time slot energy of the business time-slot of present frame AGC；Then the second judging unit does a protection mechanism to the AGC, and the specific method of protection mechanism is to judge whether the AGC is full Sufficient preparatory condition, when the AGC meets preparatory condition, the AGC of present frame Traffic Channel is updated to Broadcasting Control by updating block The gain of BCCH channel frequency and default first thresholding and.By protection mechanism, present frame can be caused to obtain one rationally In the range of AGC value so that the AGC that next frame uses is the AGC value in zone of reasonableness, prevents next frame from receiving because of gain It is excessive and radio-frequency front-end processing module input signal saturation occur, so as to cause the penalty situation of valid data decoding failure Generation.So as to effectively control the mistuning of AGC in GPRS/EDGE Traffic Channels under DTX scenes whole, the scene is improved Under service feature.
It is noted that it is logic module on each module involved in the embodiment of device, in reality In, a logic unit can be a part for a physical location or a physical location, can also be with more The combination of individual physical location is realized.The operation principle of each physical location may be referred to the narration in embodiment of the method, the present invention It will not be repeated here.In addition, in order to protrude the innovative part of the present invention, will not be with solving institute of the present invention in present embodiment The unit that the technical problem relation of proposition is less close introduces, but this is not intended that in present embodiment and other lists are not present Member.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention, And in actual applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.

Claims (10)

  1. A kind of 1. method for adjusting automatic growth control AGC, it is characterised in that including：
    Judge whether the time slot energy of the business time-slot in present frame is invalid；
    When the time slot energy for judging the business time-slot in the present frame is invalid, terminate flow；When in the judgement present frame The time slot energy of business time-slot when being not invalid, calculate the AGC value of the time slot energy；
    Judge whether the AGC value of the calculating meets all conditions in preparatory condition, the preparatory condition is：The AGC value More than or equal to the gain of BCCH channel of broadcast control frequency and default first thresholding and, the soft ratio of demodulation of the business time-slot The value of special sum is less than default second thresholding, the last frame of present frame code block where it；
    When the AGC value meets all conditions in the preparatory condition, the AGC value of the present frame Traffic Channel is updated For the BCCH frequencies gain and default first thresholding and；When the AGC value be unsatisfactory for it is any in the preparatory condition During one condition, the AGC value of the present frame Traffic Channel is updated to the AGC value according to the time slot energy balane.
  2. 2. adjustment automatic growth control AGC according to claim 1 method, it is characterised in that work as described in the judgement The time slot energy of business time-slot in previous frame it is whether invalid including：
    By the demodulation soft bit of the business time-slot and value compared with default 3rd thresholding；
    When the value of the demodulation soft bit sum is less than three thresholding, the time slot of the business time-slot in the present frame is judged Energy is invalid；When the value of the demodulation soft bit sum is more than or equal to three thresholding, the industry in the present frame is judged The time slot energy of business time slot is not invalid.
  3. 3. adjustment automatic growth control AGC according to claim 1 method, it is characterised in that judge currently described Before the whether invalid step of the time slot energy of business time-slot in frame, in addition to：
    Judge whether the present frame is frame under multi-service time slot scene；
    If it is determined that the frame under multi-service time slot scene, then select to demodulate soft bit sum in the business time-slot of the present frame It is worth maximum business time-slot；In the whether invalid step of the time slot energy for judging the business time-slot in present frame, judge The whether invalid business time-slot of time slot energy, it is the business time-slot of the selection；
    If it is determined that the frame under single business time-slot scene, then the time slot of the business time-slot in the judgement present frame is directly performed The whether invalid step of energy.
  4. 4. adjustment automatic growth control AGC according to claim 1 method, it is characterised in that by the present frame After the AGC value renewal of Traffic Channel, methods described also includes：
    Preserve the AGC value of the Traffic Channel.
  5. 5. adjustment automatic growth control AGC according to any one of claim 1 to 4 method, it is characterised in that described Method is applied to GPRS GPRS or enhanced data rates global system for mobile communications evolution technology EDGE fields Jing Zhong.
  6. A kind of 6. device for adjusting automatic growth control AGC, it is characterised in that including：
    First judging unit, for judging whether the time slot energy of the business time-slot in present frame is invalid；
    Computing unit, for judging that the time slot energy of the business time-slot in the present frame is not nothing when first judging unit During effect, the AGC value of the time slot energy is calculated；
    Whether the second judging unit, the AGC value for judging the computing unit calculating meet all conditions in preparatory condition, The preparatory condition is：The AGC value is more than or equal to the gain of BCCH channel of broadcast control frequency and default first thresholding With the value of demodulation soft bit sum is less than default second thresholding, and the present frame is last of present frame place code block Frame；
    Updating block, during for meeting all conditions in the preparatory condition when the AGC value, the present frame business is believed The AGC value in road be updated to the gain of BCCH channel of broadcast control frequency and default first thresholding and；When the AGC value is unsatisfactory for During any one condition in the preparatory condition, the AGC value of the present frame Traffic Channel is updated to according to the time slot The AGC value of energy balane.
  7. 7. adjustment automatic growth control AGC according to claim 6 device, it is characterised in that described first judges list Member includes following subelement：
    Comparing subunit, for by it is described demodulation soft bit and value compared with default 3rd thresholding；
    Subelement is judged, for when the value of the demodulation soft bit sum is less than three thresholding, judging in the present frame Business time-slot time slot energy it is invalid；When the value of the demodulation soft bit sum is more than or equal to three thresholding, judge The time slot energy of business time-slot in the present frame is not invalid.
  8. 8. adjustment automatic growth control AGC according to claim 6 device, it is characterised in that described device also includes：
    3rd judging unit, for judging whether the present frame is frame under multi-service time slot scene；
    Selecting unit, for when the 3rd judging unit judge the present frame for frame under multi-service time slot scene when, choosing Select the business time-slot for the value maximum that soft bit sum is demodulated in the business time-slot of the present frame；
    In first judging unit, the business time-slot selected using the selecting unit is judged；Sentence when the described 3rd Disconnected unit judge the present frame for frame under single business time-slot scene when, first judging unit is directly using described current Frame is judged.
  9. 9. adjustment automatic growth control AGC according to claim 6 device, it is characterised in that described device also includes：
    Storage unit, for preserving the AGC value of the Traffic Channel.
  10. 10. the device of the adjustment automatic growth control AGC according to any one of claim 6 to 9, it is characterised in that institute State device and be applied to GPRS GPRS or enhanced data rates global system for mobile communications evolution technology EDGE In scene.
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