CN1863032A - Method for regulating adaptive multi-rate modes - Google Patents
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- CN1863032A CN1863032A CN 200610072024 CN200610072024A CN1863032A CN 1863032 A CN1863032 A CN 1863032A CN 200610072024 CN200610072024 CN 200610072024 CN 200610072024 A CN200610072024 A CN 200610072024A CN 1863032 A CN1863032 A CN 1863032A
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Abstract
The invention supplies a self-adjusting multi ratio mode adjusting method that includes the following steps: building up the corresponding relationship between SNR and average evaluation under different self-adjusting multi ratio mode; adjusting to the mode having hest average evaluation. The invention could avoid the damage to speech quality in step adjusting mode process, and improve the speech quality.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method for regulating adaptive multi-rate modes.
Background technology
Along with extensive use and fast development, in a lot of key technologies also be gradually improved.In global GSM, information source and channel coding rate are fixed, irrelevant with channel quality, under the channel condition of difference, if the redundant bit number of chnnel coding is not enough to correct error of transmission, the bit number that should increase the redundant bit number in the chnnel coding and reduce source encoding improves voice quality, and is opposite under good channel condition, should increase the source bits number to improve voice quality.Therefore, (Adaptive Multi-Rate codec AMR), solves the rate allocation of source encoding and chnnel coding with intelligent manner more to adopt the adaptive multi-rate coding mode in the third generation.
At Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, WCDMA) in the system, voice use the AMR coded system, and 8 kinds of speech patterns can be provided, and each pattern is corresponding to a kind of speed: 12.2,10.2,7.95,7.4,6.7,5.9,5.15 or 4.75kbit/s.Different pattern voice have characteristics such as different source encodings, chnnel coding, and different voice qualities can be provided.In the wireless communication system, the principal element that voice quality is exerted an influence is a source coding rate, promptly the AMR pattern of voice and dissemination channel Block Error Rate (Block ErrorRate, BLER).The height of AMR pattern is determined that by code rate code rate is high more, and pattern is high more.Generally speaking, when environment was good, pattern was high more, and the voice quality that provides is high more; And when environment was very poor, the voice quality of low mode was high all the better.Voice signal can convert digital bit to when transmitting in the digital radio communication system, digital bit is divided into piece and transmits in wireless channel, and BLER is low more in the transmission course, and then the voice quality of Hui Fuing is just good more.
In communication process,, at this time need the data rate that can adjust is modulated to improve communication conditions because changes such as transmission environment and position may cause quality of connection to descend or system load is approaching saturated.Corresponding A MR voice need carry out pattern control exactly.
Fig. 1 is 3GPP TR26.975[1] voice quality of the different mode that provides is with frame error rate (frameErasure Ratio, FER) change curve, data among this figure come from the test data in the gsm system, and the control to speech pattern in the wireless communication system is had reference role.In Fig. 1, (Mean Opinion Scores MOS) weighs the quality of different speech patterns under different FER situations to have adopted the average ratings branch.The MOS score value is high more, represents that then voice quality is good more.Longitudinal axis △ MOS is and the difference of MOS4.0 (the MOS value is 4.0) among the figure, and transverse axis is the FER value.The height of FER directly influences voice quality MOS score, and in the AMR speech coding, (Cyclic Redundancy Check, CRC), the CRC check position of Class B, C is 0, so BLER=FER owing to only Class A is done cyclic redundancy check (CRC).Therefore, Fig. 1 has also reflected the situation of change of different mode voice quality with BLER.As we can see from the figure, voice can divide at least more than 2.8 by received MOS basically.Corresponding FER is substantially more than 7%.In this section FER scope, according to Fig. 1 as can be seen, the MOS of height mode divides basic height than low mode, that is to say, if FER can be guaranteed that in 7% the high more voice quality of pattern is also high more.But also as can be seen, FER is being higher than in 4%, and the voice quality of various patterns sharply descends.
When the AMR voice transmitted in wireless communication system, the influence that voice quality is subjected to communication environments was also very big, and communication environments can influence the BLER of speech business.Communication environments by good variation process in because low mode has than the better fault-tolerance of height mode, so the speed that the speed ratio height mode voice quality that the voice quality of low mode reduces reduces is slow.When the environment variation arrives to a certain degree, the situation that the low mode voice quality is higher than the height mode voice quality will appear.
The trend of different mode voice quality with environmental change is provided among the 3GPP TR26.975.Along with the increase of C/I (ratio of signal and interference), the different mode voice quality all can reduce, but pattern is low more, and it is mild more that voice quality weakens, even the voice quality of low rate mode AMR voice progressively is better than high-rate mode AMR voice.The C/I here is similar to the Ec/No (signal to noise ratio) among the WCDMA.Because power control action, terminal professional Ec/No under power can guaranteed situation maintains a constant level substantially, therefore, the deterioration of Ec/No is mainly reflected in power and controls under the situation about not restraining, and this moment, the low mode voice quality was kept than height mode is easier.
In addition, under different mode, identical BLER situation, the needed transmitting power of low mode is also low more.For up, because the existence of coding gain guarantees that low mode needs lower transmitting power.For descending, (the needed average transmit power of low mode is also just low more for Discontinuous Transmission, existence DTX) owing to discontinuous transmission.
As seen from the above analysis, under the situation that terminal power can be ensured, the speech quality of terminal is ensured by the high MOS that height mode provides, and under the situation that power can not ensure, just need suitably switch to low mode, make terminal power be ensured because required transmitting power reduces on the one hand, low mode is at this moment also than the easier quality of service of keeping of height mode in addition.Therefore, the required speech pattern of making that changes in appropriate exactly of adaptive multi-rate control is kept voice quality.The level and smooth conversion of AMR different phonetic pattern can provide high-quality service for voice terminal, and brings gain for the capacity of system and covering.
In the WCDMA system, the variation of C/I is embodied in the variation of system load and quality of connection.Owing to adopt the method for power control, make that the transmitting power size has reflected the situation that system and business are connected when guaranteeing voice quality, as the path loss situation under cell load and the communication environments etc.When system load big more, then aerial disturb big more, in order to reach certain signal to noise ratio, then the transmitting power of each terminal need big more, vice versa.When system's propagation conditions change, perhaps terminal is distant from the base station, and when having arrived the edge of sub-district, path loss can increase, thereby the transmitting power that terminal needs also increases.And, when transmitted power reduces, can directly influence the signal to noise ratio of received signal, thereby the error rate of data is accepted in influence, and then influenced the quality of speech business each terminal.
Because transmitting power reflected air interface interference situation and current connection state preferably, thus in the prior art when carrying out the control of AMR pattern, select for use transmitting power as adjusting the required feedback information of AMR pattern.To up AMR pattern control, measure travelling carriage carrier transmit power, to descending AMR pattern control, then be the average transmit power and the threshold value of comparing data dedicated channel.
At present, AMR mode adjustment mode can be with reference to the principle of transmitting power report mechanism shown in Figure 2.For transmitting power is provided with two thresholdings, promptly Upper threshold and Lower Threshold identify with 1 series and 2 series respectively in Fig. 2.Comprise two thresholding: A and B in every serial thresholding, be respectively applied for and check the ingoing power constrained state and withdraw from the power limited state.Setting for threshold value is to utilize maximum transmission power, dispose some side-play amounts for the controlled entity of rate control algorithm, be used to calculate the threshold value of measuring control, do not measure the control gate limit value and need when each channel capacity or cell environment change, not calculate according to these factors again again.When condition changing, only need to deduct side-play amount and can obtain threshold value with maximum transmission power.
Report mechanism is specially: passed through Upper threshold 6A1 from the bottom up when transmitting power has surpassed, then reported the 6A1 incident; Pass through Upper threshold 6B1 from top to bottom when transmitting power, then reported 6B1 incident; Pass through Lower Threshold 6B2 from top to bottom when transmitting power, then reported 6B2 incident; Pass through Lower Threshold 6A2 from the bottom up when transmitting power and then reported the 6A2 incident.The method that can deduct relative threshold by the maximum transmission power of link that is provided with of thresholding obtains.
The flow process of adjusting the AMR pattern according to transmitting power in the above-mentioned prior art as shown in Figure 4, concrete grammar is as follows:
When receiving the 6A1 event report, the expression transmitting power is than higher, concrete corresponding environment may be that the load of sub-district has been in than higher state or terminal away from the base station, current AMR pattern may not continue to be supported, for continuity that keeps terminal traffic or the load that alleviates the sub-district, then the AMR pattern with current terminal reduces.If the AMR pattern of terminal reduces after the one-level, still do not receive the 6B1 incident, then reduce the AMR pattern once more step by step with certain cycle, up to the AMR pattern reduce to lowest mode or receive the 6B1 incident or during the 6B2 event report just dwelling period reduce the processing of pattern.
When receiving the 6B2 event report, represent that current transmit power level is lower, concrete corresponding environment may be that system load is lower or terminal is closer apart from the base station, also have unnecessary power resource to use, the AMR pattern that the terminal that so just raises is current is to provide better voice service quality.After the AMR of terminal pattern rising one-level, do not receive the 6A2 incident within a certain period of time, then with raise the step by step once more AMR pattern of terminal of certain cycle, reach height mode or receive the just processing of dwelling period lift mode of 6A2 event report up to the AMR of terminal pattern.
When receiving 6B1 or 6A2 incident, concrete processing need be decided on the state before this event report, and following three kinds of situations are arranged:
(1) speech pattern is in when periodically adjusting upward, if receive the 6A2 event report then stop to adjust the processing of AMR pattern, and enters normal condition, if receive the 6B1 incident then do not handle;
(2) speech pattern is in when periodically downwards adjusting, if receive the 6B1 incident then dwelling period is adjusted the processing of AMR pattern, and enters normal condition, if receive the 6A2 incident then do not handle;
(3) be not in when periodically adjusting state when speech pattern, if receive 6B1 incident or 6A2 incident then all disregard.
The method of uplink and downlink AMR mode adjustment is identical, and process is independent.
The method according to transmitting power adjustment AMR pattern of prior art, (BLER is very high) turns down the AMR pattern step by step when transmission environment becomes very poor suddenly, and intergrade speed can cause damage to voice quality like this; If when same transmission environment becomes fine (BLER is very low) suddenly, the AMR pattern is raise step by step, intergrade speed also can cause damage to voice quality.And, raising step by step or reducing in the method for adjusting the AMR pattern, be higher than Lower Threshold if be transferred to certain speed transmitting power, pattern just can not be again to rise so, but might adopt higher pattern this moment, transmitting power also allows, and adopts the method for adjusting step by step obviously can not reach this pattern, certainly will impact voice quality like this.
Summary of the invention
In order to address the above problem, purpose of the present invention just provides a kind of method for regulating adaptive multi-rate modes, comprises the following steps:
Steps A) set up under the different adaptive multi-rate modes, signal to noise ratio and average ratings are divided corresponding relation;
Step B) divides corresponding relation according to signal to noise ratio and average ratings, adaptive multi-rate modes is adjusted to average ratings divide the highest pattern.
Described steps A) comprises the following steps:
Steps A 1) sets up the relation between the signal to noise ratio under the different adaptive multi-rate modes;
Steps A 2) sets up the corresponding relation of Block Error Rate and signal to noise ratio under the different adaptive multi-rate modes;
Steps A 3) sets up the corresponding relation that Block Error Rate and average ratings divide under the different adaptive multi-rate modes.
Described steps A 1) comprises the following steps:
Set up under the different channels environment relation between the signal to noise ratio under the different adaptive multi-rate modes.Described
Described steps A 1) also comprises the following steps:
According to the relation between the signal to noise ratio of different adaptive multi-rate modes under the different channels environment, the relation table of signal to noise ratio under the different adaptive multi-rate modes under foundation and the preservation different channels environment.
Under the described different channels environment between the signal to noise ratio of different adaptive multi-rate modes relation be meant when up under the same channel circumstance that the ratio of each signal to noise ratio under the different adaptive multi-rate modes equals the ratio of bit rate, when descending under the same channel circumstance under the different adaptive multi-rate modes each signal to noise ratio equate.
Described steps A 2) comprising:
A21) just often the different channels environment is carried out emulation at external circule power control;
A22) obtain the Block Error Rate of different adaptive multi-rate modes under each channel circumstance and the corresponding relation of signal to noise ratio according to simulation result.
Described external circule power control normally is meant when power is sufficient, has converged to the required target signal to noise ratio of target Block Error Rate; Perhaps during power limited, pairing signal to noise ratio of maximum transmission power and Block Error Rate have been reached.
Steps A 21) in, described emulation is carried out emulation for using the networking simulator.
Steps A 3) in, the corresponding relation that Block Error Rate and average ratings are divided under the described different adaptive multi-rate modes is the relation that obtains by communication protocol.
Described step B) comprises the following steps:
Step B1), obtains the snr value of other adaptive multi-rate modes of the snr value correspondence of adaptive multi-rate modes current under the current channel circumstance according to the relation between the signal to noise ratio under the different adaptive multi-rate modes;
Step B2), obtains the Block Error Rate value of each snr value correspondence according to the corresponding relation of Block Error Rate under the different adaptive multi-rate modes and signal to noise ratio;
Step B3), obtains the average ratings branch of each Block Error Rate value correspondence according to the corresponding relation of Block Error Rate under the different adaptive multi-rate modes and average ratings branch;
Step B4) adaptive multi-rate modes is directly adjusted to average ratings and divide the highest adaptive multi-rate modes.
Described channel circumstance comprises any or the multiple combination in rural environment, typical urban environment, abominable urban environment and the hills environment.
Described is WCDMA, perhaps CDMA2000, perhaps TD-SCDMA.
Method for regulating adaptive multi-rate modes of the present invention is directly adjusted to MOS to the AMR pattern and is divided the highest pattern, removes the unnecessary harm that in the adjustment modes process step by step voice quality is caused from, has improved voice quality.
Description of drawings
Fig. 1 is 3GPP TR26.975[1] the different mode voice quality that provides is with the change curve of frame error rate;
Fig. 2 is the principle schematic of existing transmitting power report mechanism;
Fig. 3 is the flow chart of specific embodiment of the invention method for regulating adaptive multi-rate modes;
Fig. 4 is the flow chart of AMR mode adjustment process in the specific embodiment of the invention method for regulating adaptive multi-rate modes.
Embodiment
Basic thought of the present invention is: when transmit power limited, no longer adopt the strategy of adjusting speed blindly step by step, but according to the MOS branch of various patterns under this channel circumstance, the AMR pattern is directly adjusted to MOS divide the highest pattern, remove the unnecessary harm that in the adjustment modes process step by step voice quality is caused from, improve voice quality.
Below in conjunction with accompanying drawing 3 and 4 and specific embodiment the present invention is further described in more detail.
Present embodiment is can support the third generation (3G) wireless mobile telecommunication technology with a kind of, the method for regulating adaptive multi-rate modes of Wideband Code Division Multiple Access (WCDMA) (WCDMA) communication system is described, but the present invention is suitable for the situation except the method for regulating adaptive multi-rate modes of the above-mentioned support third generation (3G) wireless mobile telecommunication technology equally, as CDMA 2000 (CDMA2000) communication system or time division duplex one synchronous code division multiple access (TD-SCDMA) communication system.
The method for regulating adaptive multi-rate modes concrete steps of present embodiment are as follows:
11) set up under the different AMR patterns, (signaling intertrace rate SIR) divides corresponding relation with MOS to signal to noise ratio.
111) set up under the different channels environment relation between the SIR of different AMR patterns.
1111) set up under the different channels environment relation between the SIR under the different AMR patterns;
Detailed process is as follows:
According to
Calculate each SIR, wherein W is a chip-rate, and R is a bit rate, promptly different AMR speed, and P is gross power (supposes every kind of pattern use maximum transmission power), and f is total the interference, and pl always declines.
For up, because no discontinuous transmissions DTX exists, under the same channel environment, the chip-rate under the different AMR patterns, gross power, interference always, always decline identical, has only the bit rate difference, so the SIR of different AMR patterns ratio is the ratio of R (AMR speed) under the same channel environment.
For descending, because there is discontinuous transmission DTX to exist, under the same channel environment, the chip-rate under the different AMR patterns is different with bit rate, and other parameters are identical, still since this moment every kind of pattern chip-rate and the ratio of bit rate
Approximately equal, thus under the same channel environment sir value approximately equal of different AMR patterns.
By said process, can obtain uplink and downlink respectively under the same channel environment, the relation between the SIR under the different AMR patterns.
Described AMR pattern is corresponding to different rates, and described speed can be: 12.2,10.2,7.95,7.4,6.7,5.9,5.15 or 4.75kbit/s.
Described channel circumstance comprises rural environment (RA, rural area), typical urban environment (TU, typicalurban area), abominable urban environment (BU, bad urban area) and hills environment (HT, hilly terrain) etc.
1112) according under each channel circumstance, the relation between the SIR under the different AMR patterns obtains under each channel circumstance, and the corresponding relation between the SIR under the different AMR patterns is as shown in table 1.
The relation of correspondence between the SIR under the different AMR patterns of table 1
| AMRmode | SIR1 | SIR2 | … | SIRN |
| 12.2 | SIR1-12.2 | SIR2-12.2 | … | SIRN-12.2 |
| 10.2 | SIR1-10.2 | SIR2-10.2 | … | SIRN-10.2 |
| 7.95 | SIR1-7.95 | SIR2-7.95 | … | SIRN-7.95 |
| 7.4 | SIR1-7.4 | SIR2-7.4 | … | SIRN-7.4 |
| 6.7 | SIR1-6.7 | SIR2-6.7 | … | SIRN-6.7 |
| 5.9 | SIR1-5.9 | SIR2-5.9 | … | SIRN-5.9 |
| 5.15 | SIR1-5.15 | SIR2-5.15 | … | SIRN-5.15 |
| 4.75 | SIR1-4.75 | SIR2-4.75 | … | SIRN-4.75 |
The form that different channel circumstances is corresponding different respectively; The form that uplink and downlink are corresponding different respectively.
112) set up the BLER of different AMR patterns under each channel circumstance and the corresponding relation of SIR according to simulation result;
1121) use the networking simulator (Network Simulator2, NS2), to WCDMA network external circule power control just often the different channels environment carry out emulation;
The version of NS2 is selected ns2-2.27 for use.
NS2 is a kind of simulator in the computer network, by the exploitation of units such as California, USA Lawrence Berkeley National Laboratory and free use of increasing income.NS2 is widely used in local area network (LAN), wide area network, wireless mobile network and satellite network emulation.
According to the purpose of power control, power control can be divided into inner-loop power control and external circule power control.Inner-loop power control is used for compensating because the decline that causes of multipath effect, the target SIR value that the sir value that receives is reached provided by external circule power control.The purpose of external circule power control is to guarantee communication quality on certain standard, and the proposition of this standard is for sufficiently high signal to noise ratio requirement is provided to inner-loop power control.The specific implementation process is the Block Error Rate (BLER) that receives data according to statistics, and for inner-loop power control provides target SIR, target SIR is to be associated with professional data rate.Described external circule power control normally comprises two kinds of situations: one, and the power abundance converges to the required target SIR of target BLER; Two, power limited, convergence fall short BLER, but reached pairing SIR of maximum transmission power and BLER.
Be known technology for the method for using NS2 artificial network environment, be not described in detail in this.
1122) obtain the BLER of different AMR patterns under each channel circumstance and the corresponding relation curve of SIR according to simulation result;
The concrete parameter of described curve is as shown in table 2:
The corresponding relation of table 2BLER and SIR
| SIR1 | SIR2 | SIR3 | … | SIRN |
| BLER1 | BLER2 | BLER3 | … | BLER1 |
Different AMR patterns is distinguished the correspondence table of a corresponding BLER and SIR under the different channels environment.
113) set up the corresponding relation that BLER and MOS divide under each AMR pattern according to communication protocol;
Can find the corresponding relation curve that BLER and MOS divide under the different AMR patterns in communication protocol 3GPP 26.975, the concrete parameter of this curve is as shown in table 3:
The corresponding relation that table 3BLER and MOS divide
| BLER1 | BLER2 | BLER3 | … | BLER1 |
| MOS1 | MOS2 | MOS3 | … | MOSN |
12) divide corresponding relation according to SIR and MOS, the AMR pattern is directly adjusted to MOS divide the highest pattern, concrete AMR mode adjustment process as shown in Figure 4.
121) judge whether the transmitting power that current AMR pattern needs surpasses threshold value, if surpass threshold value, then according to the relation between the SIR under the different AMR patterns, obtain the sir value of other AMR patterns of the sir value correspondence of AMR pattern current under the current channel circumstance; Otherwise, continue.
1211), judge when 6A or 6B Event triggered whether the transmitting power that current AMR pattern needs surpasses threshold value for up; For descending, judge periodically whether the transmitting power that current AMR pattern needs surpasses threshold value.
Adopt existing transmitting power report machine for the judgement of transmitting power, transmitting power report machine is that transmitting power is provided with two thresholdings, i.e. Upper threshold and Lower Threshold.Setting for threshold value is to utilize maximum transmission power, dispose some side-play amounts for the controlled entity of rate control algorithm, be used to calculate the threshold value of measuring control, do not measure the control gate limit value and need when each channel capacity or cell environment change, not calculate according to these factors again again.When condition changing, only need to deduct side-play amount and can obtain threshold value with maximum transmission power.
When 1212) transmitting power that needs in current AMR pattern surpassed threshold value, the table 1 of the relation between the SIR under each channel circumstance of inquiry expression under the different AMR patterns obtained the sir value of other AMR patterns of the sir value correspondence of the AMR pattern under the current channel circumstance.Described threshold value comprises upper threshold and Xiamen limit value.
The form that uplink and downlink are respectively corresponding different is if the transmitting power of up needs when surpassing threshold value, is inquired about the form of the relation between the SIR under the different AMR patterns under each up channel circumstance; If the transmitting power of descending needs when surpassing threshold value, is inquired about the form of the relation between the SIR under the different AMR patterns under each descending channel circumstance.
Because other AMR patterns have 7 kinds, therefore, the sir value that obtains of tabling look-up has a plurality of.
This step also can be according to the relation of counting between the SIR under the different AMR patterns, the sir value of other AMR patterns of the sir value correspondence by calculating current AMR pattern.
For up, the SIR of different AMR patterns ratio is the ratio of R (AMR speed) under the same channel environment.
For descending, the sir value approximately equal of different AMR patterns under the same channel environment.
122), obtain the BLER value of each sir value correspondence according to the BLER of AMR pattern under each channel circumstance and the corresponding relation of SIR;
1221) inquiry obtains the BLER value of each sir value correspondence according to the table 2 of the corresponding relation curve definitions of the BLER of different AMR patterns under each channel circumstance and SIR;
123) corresponding relation that divides according to BLER and MOS under each AMR pattern obtains the corresponding MOS branch of each BLER value;
1231) inquiry obtains the corresponding MOS of each BLER value and divides and corresponding AMR pattern according to the table 3 of the corresponding relation curve definitions of BLER and MOS branch under each AMR pattern;
124) the AMR pattern is directly adjusted to MOS and divide the highest AMR pattern.
Method for regulating adaptive multi-rate modes of the present invention is directly adjusted to MOS to the AMR pattern and is divided the highest pattern, avoided the unnecessary harm that middle model causes voice quality in the adjustment modes process step by step, also avoided simultaneously raising step by step or reducing in the method for adjusting the AMR pattern, be transferred to certain speed transmitting power, after being higher than a certain threshold value, just can not continue to be modulated to more suitably this defective of pattern, improve voice quality.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (12)
1. method for regulating adaptive multi-rate modes may further comprise the steps:
Steps A) sets up the corresponding relation that signal to noise ratio and average ratings are divided under the different adaptive multi-rate modes;
Step B) divides corresponding relation according to signal to noise ratio and average ratings, adaptive multi-rate modes is adjusted to average ratings divide the highest pattern.
2. method for regulating adaptive multi-rate modes as claimed in claim 1 is characterized in that, described steps A) comprise the following steps:
Steps A 1) sets up the relation between the signal to noise ratio under the different adaptive multi-rate modes;
Steps A 2) sets up the corresponding relation of Block Error Rate and signal to noise ratio under the different adaptive multi-rate modes;
Steps A 3) sets up the corresponding relation that Block Error Rate and average ratings divide under the different adaptive multi-rate modes.
3. method for regulating adaptive multi-rate modes as claimed in claim 2 is characterized in that, described steps A 1) comprise the following steps:
Set up under the different channels environment relation between the signal to noise ratio under the different adaptive multi-rate modes.
4. method for regulating adaptive multi-rate modes as claimed in claim 2 is characterized in that, described steps A 1) also comprise the following steps:
According to the relation between the signal to noise ratio of different adaptive multi-rate modes under the different channels environment, the relation table of signal to noise ratio under the different adaptive multi-rate modes under foundation and the preservation different channels environment.
5. as claim 3 or 4 described method for regulating adaptive multi-rate modes, it is characterized in that, under the described different channels environment between the signal to noise ratio of different adaptive multi-rate modes relation be meant when up under the same channel circumstance that the ratio of each signal to noise ratio under the different adaptive multi-rate modes equals the ratio of bit rate, when descending under the same channel circumstance under the different adaptive multi-rate modes each signal to noise ratio equate.
6. method for regulating adaptive multi-rate modes as claimed in claim 2 is characterized in that, described steps A 2) comprising:
A21) just often the different channels environment is carried out emulation at external circule power control;
A22) obtain the Block Error Rate of different adaptive multi-rate modes under each channel circumstance and the corresponding relation of signal to noise ratio according to simulation result.
7. method for regulating adaptive multi-rate modes as claimed in claim 6 is characterized in that, described external circule power control normally is meant when power is sufficient, has converged to the required target signal to noise ratio of target Block Error Rate; Perhaps during power limited, pairing signal to noise ratio of maximum transmission power and Block Error Rate have been reached.
8. method for regulating adaptive multi-rate modes as claimed in claim 6 is characterized in that, steps A 21) in, described emulation is carried out emulation for using the networking simulator.
9. method for regulating adaptive multi-rate modes as claimed in claim 2 is characterized in that, steps A 3) in, the corresponding relation that Block Error Rate and average ratings are divided under the described different adaptive multi-rate modes obtains by communication protocol.
10. method for regulating adaptive multi-rate modes as claimed in claim 2 is characterized in that, described step B) comprise the following steps:
Step B1), obtains the snr value of other adaptive multi-rate modes of the snr value correspondence of adaptive multi-rate modes current under the current channel circumstance according to the relation between the signal to noise ratio under the different adaptive multi-rate modes;
Step B2), obtains the Block Error Rate value of each snr value correspondence according to the corresponding relation of Block Error Rate under the different adaptive multi-rate modes and signal to noise ratio;
Step B3), obtains the average ratings branch of each Block Error Rate value correspondence according to the corresponding relation of Block Error Rate under the different adaptive multi-rate modes and average ratings branch;
Step B4) adaptive multi-rate modes is directly adjusted to average ratings and divide the highest adaptive multi-rate modes.
11. as each described method for regulating adaptive multi-rate modes in claim 3 or 4 or 6 or 10, it is characterized in that described channel circumstance comprises any or the multiple combination in rural environment, typical urban environment, abominable urban environment and the hills environment.
12. method for regulating adaptive multi-rate modes as claimed in claim 1, described is WCDMA, perhaps CDMA2000, perhaps TD-SCDMA.
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| CN102355432A (en) * | 2011-08-12 | 2012-02-15 | 福建星网锐捷网络有限公司 | Method and base station for determining wireless message transmission rate |
| CN102457883A (en) * | 2010-10-27 | 2012-05-16 | 中国移动通信集团公司 | Method and equipment for testing closed loop power control performance |
| CN101715213B (en) * | 2009-11-24 | 2013-08-07 | 中兴通讯股份有限公司 | Conversation optimization processing method and system |
| CN103686792A (en) * | 2013-12-19 | 2014-03-26 | 北京理工大学 | Adaptive optimization method based on AMR algorithm parameter setting |
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| EP1192831B1 (en) * | 1999-07-05 | 2004-01-02 | Nokia Corporation | Method for selection of coding method |
| KR100501324B1 (en) * | 2002-12-30 | 2005-07-18 | 삼성전자주식회사 | Call Routing Method based on MOS prediction value |
| CN1275400C (en) * | 2002-12-31 | 2006-09-13 | 中兴通讯股份有限公司 | Velocity regulating method of speech sound self adaptive multivelocity |
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| CN101715213B (en) * | 2009-11-24 | 2013-08-07 | 中兴通讯股份有限公司 | Conversation optimization processing method and system |
| CN102457883A (en) * | 2010-10-27 | 2012-05-16 | 中国移动通信集团公司 | Method and equipment for testing closed loop power control performance |
| CN102457883B (en) * | 2010-10-27 | 2014-09-10 | 中国移动通信集团公司 | Method and equipment for testing closed loop power control performance |
| CN102355432A (en) * | 2011-08-12 | 2012-02-15 | 福建星网锐捷网络有限公司 | Method and base station for determining wireless message transmission rate |
| CN102355432B (en) * | 2011-08-12 | 2014-07-02 | 福建星网锐捷网络有限公司 | Method and base station for determining wireless message transmission rate |
| CN103686792A (en) * | 2013-12-19 | 2014-03-26 | 北京理工大学 | Adaptive optimization method based on AMR algorithm parameter setting |
| CN103686792B (en) * | 2013-12-19 | 2016-09-28 | 北京理工大学 | The adaptive optimization method that a kind of AMR algorithm parameter is arranged |
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