CN1870455A - Method of power control for mobile communication system - Google Patents
Method of power control for mobile communication system Download PDFInfo
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- CN1870455A CN1870455A CN 200510074422 CN200510074422A CN1870455A CN 1870455 A CN1870455 A CN 1870455A CN 200510074422 CN200510074422 CN 200510074422 CN 200510074422 A CN200510074422 A CN 200510074422A CN 1870455 A CN1870455 A CN 1870455A
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Abstract
This invention discloses a method for power control of the mobile communication system including: a master control end obtains the S/I ratio before and after the adjustment of received signals based on their quality to generate a power control order based on the S/I ratio and said S/N ratio and sends the power control order to a controlled end, which adjusts the emission power of the signal based on the received power control order, which can adjust the internal ring power control more stable.
Description
Technical field
The present invention relates to the power control field of mobile communication system, be specifically related to a kind of method of mobile communication system power control.
Background technology
CDMA (code division multiple access) system is a self-interference system, and the transmitting power of travelling carriage is exactly to disturb for other users that take same frequency in the sub-district, and " near-far interference " problem is outstanding especially.So-called near-far interference is the far and near different mobile phone in span base station when using together, can suppress the small-power useful signal far away from the base station from the nearer high-power signal of base station distance.For this reason, the transmitting power of each travelling carriage is maintained on the floor level that satisfies communicating requirement, and guarantee that no matter how they change apart from base station distance and channel condition, can both obtain essentially identical power in base station side.Power control techniques is exactly that cdma system is used for overcoming a kind of technology of " near-far interference ", can reduce average transmit power, reduce between system and system in interference.
Power control can be divided into open Loop Power control and closed power control, closed-loop power control can be divided into exterior ring power control and inner loop power control again, usually outer shroud is to be interior ring target setting value (as received power desired value, signal-to-noise target value etc.) according to quality of service (as error rate BER, block error rate BLER etc.), and interior ring comes transmitting power is adjusted according to the comparative result of signal quality and outer shroud target value set.
According to the difference of link direction, power control can also be divided into up (oppositely) and descending (forward direction) power control.With up inner-loop power control is example, and up inner-loop power control assists terminal to finish its function by the base station.Base station measurement received signal quality (as received power or signal to noise ratio etc.) also compares with desired value, if be higher than desired value, then generates an order that requires to increase transmitting power, otherwise then generates an order that requires to reduce transmitting power.If system allows transmitting power not adjust, when then the signal quality that receives when the base station is higher than the certain thresholding of desired value, will generate an order that requires to reduce transmitting power; When the signal quality that receives when the base station is lower than the certain thresholding of desired value, will generate an order that requires to improve transmitting power, all the other situations generate an order that keeps former transmitting power.Then, by control channel or other modes order is sent to terminal, terminal is made corresponding adjustment according to step-length high-rise appointment or predefined to transmitting power after receiving control command, thereby makes all terminals of same carrier frequency, same time slot (for time-division system) arrive the power of base station or the requirement that signal to noise ratio can satisfy quality of service.
In the prior art, the power control criterion is broadly divided into two big classes: power-balance criterion and SIR (signal to noise ratio) balance criterion.They are controlled each subscriber signal respectively and equate or SIR equates in the available power of receiving terminal.
The power-balance criterion is exactly that power level according to received signal just generates control command, its shortcoming is interference and the noise that does not have in the taking into account system, reach the power of appointment but quality of service might not meet the demands, that is to say the directly quality of reflected signal of received power.For example, the diverse location in same sub-district, the different time-gap of same carrier frequency (for time-division system), perhaps same carrier frequency, same time slot all are different at the disturbance regime of different time, its power level that needs also is different.So, in 3-G (Generation Three mobile communication system), all do not adopt the power-balance criterion.
In fact the signal to noise ratio balance criterion has two kinds according to the difference of measurement point, and a kind of is before demodulation, and its value is the ratio of signal power with interference power, and promptly SIR (signal interference ratio) becomes certain proportionate relationship with C/I (carrier/interface ratio); Another is after demodulation, the SNR (signal to noise ratio) that utilizes the soft bit of signal (promptly carry out the input of Soft decision decoding, have amplitude and phase information) after the demodulation to calculate.For different detection algorithms, perhaps same detection algorithm is under the different channels condition, and the corresponding relation of SIR and SNR is different.SIR is still power guidelines in essence, just owing to considered the interference level of Radio Link, more can reflect the quality of received signal than the power guidelines on the pure meaning, but the direct quality of reflected signal demodulation.SNR is owing to be to utilize the soft bit after the demodulation to calculate, quality that more can the reflected signal demodulation, but can not directly reflect the level of received signal.
So, utilize top two kinds of signal-to-noise ratio (SNR) Criterion to carry out power control, the weakness that all has it to be difficult to overcome separately.Before inner-loop power control adopts demodulation during signal interference ratio SIR criterion, because SIR can not directly reflect the quality of demodulation quality, need the desired value SIRtarget of SIR that bigger dynamic range is arranged, and external circule power control is long usually to the adjustment cycle of sir target value SIRtarget, like this when channel circumstance changes, outer shroud need experience for a long time could adjust to SIRtarget suitable scope, during this period of time can cause communication quality to can not get for a long time guaranteeing, perhaps use the power far above needs to communicate for a long time, this will produce serious disturbance to other users.
After inner-loop power control adopts demodulation during the signal to noise ratio snr criterion, because SNR can not directly reflect the level of received signal, the too high or too low situation of received signal level can appear also.For example, when the frequency deviation of terminal is excessive, can cause the still non-constant of signal demodulation quality under the very high situation of received signal power, power control at this moment can continue to improve transmitting power, and other users are caused serious interference.Again for example, cross when low at the system interference level, can cause the SNR that calculates under the low-down situation of received signal power still than higher, power control can continue to reduce transmitting power, makes Radio Link become unstable.
Summary of the invention
The method that the purpose of this invention is to provide the control of a kind of mobile communication system power, with overcome adopt before the receiving signal demodulation signal interference ratio or demodulation in the prior art separately after signal-to-noise ratio (SNR) Criterion carry out the shortcoming that power control exists, improve Radio Link stability.
For this reason, the invention provides following technical scheme:
A kind of method of mobile communication system power control is used for carrying out inner loop power control according to the outer shroud target value set, may further comprise the steps:
A, main control end be according to the quality of received signal, obtains signal interference ratio before the receiving signal demodulation and the signal to noise ratio after the demodulation respectively;
B, generate power control command according to described signal interference ratio and described signal to noise ratio;
C, give controlled end with described power control command transmitting;
D, described controlled end are adjusted its signal emitted power according to the power control command of receiving.
Described method also comprises step:
Described main control end preestablishes the signal interference ratio alarm threshold before the receiving signal demodulation, comprises signal interference ratio max threshold and signal interference ratio minimum threshold;
Set signal interference ratio and adjust threshold value, comprise that max threshold is adjusted threshold value and minimum threshold is adjusted threshold value;
Described max threshold is adjusted threshold value smaller or equal to described max threshold, and described minimum threshold is adjusted threshold value more than or equal to described minimum threshold;
Set and allow signal to noise ratio change threshold under not adjustment of the power situation.
Reduce if only allow power control that transmitting power is gone up to be in harmonious proportion, then described step B specifically comprises:
B1, when described signal interference ratio during more than or equal to described signal interference ratio max threshold, generate the order that reduces transmitting power, generate the max threshold alarm signal simultaneously;
B2, when described signal interference ratio during smaller or equal to described signal interference ratio minimum threshold, generate the order that improves transmitting power, generate the minimum threshold alarm signal simultaneously;
B3, when described signal interference ratio during greater than described signal interference ratio minimum threshold and less than described signal interference ratio max threshold, the signal-to-noise target value of setting according to described signal to noise ratio and external circule power control generates power control command.
Described step B3 is specially:
When described signal to noise ratio during, generate the order that reduces transmitting power greater than described signal-to-noise target value;
When described signal to noise ratio during, generate the order that improves transmitting power smaller or equal to described signal-to-noise target value.
If the control of fair row power does not adjust transmitting power, then described step B specifically comprises:
B1 ', when described signal interference ratio during greater than described signal interference ratio max threshold, generate the order that reduces transmitting power, generate the max threshold alarm signal simultaneously;
B2 ', when described signal interference ratio during less than described signal interference ratio minimum threshold, generate the order that improves transmitting power, generate the minimum threshold alarm signal simultaneously;
B3 ', when described signal interference ratio during more than or equal to described signal interference ratio minimum threshold and smaller or equal to described signal interference ratio max threshold, adjust the signal-to-noise target value that threshold value, described signal to noise ratio and external circule power control set according to described signal interference ratio and generate power control command.
Described step B3 ' comprising:
B31 ', when max threshold is adjusted threshold value≤signal interference ratio≤max threshold, if described signal to noise ratio greater than described signal-to-noise target value, then generates the order that reduces transmitting power, penetrate the order of power otherwise generate uncomfortable haircuting;
B32 ', when minimum threshold≤signal interference ratio≤minimum threshold is adjusted threshold value, if described signal to noise ratio less than described signal-to-noise target value, then generates the order that improves transmitting power, penetrate the order of power otherwise generate uncomfortable haircuting;
B33 ', when minimum threshold is adjusted threshold value＜signal interference ratio＜max threshold and is adjusted threshold value, signal-to-noise target value and the described signal to noise ratio change threshold set according to described signal to noise ratio and external circule power control generate power control command.
Described step B33 ' is specially:
When described signal to noise ratio during, generate the order that reduces transmitting power greater than described signal-to-noise target value and described signal to noise ratio change threshold sum;
When described signal to noise ratio during, generate the order that improves transmitting power less than the difference of described signal-to-noise target value and described signal to noise ratio change threshold;
Otherwise, generate uncomfortable haircuting and penetrate the order of power.
Described step D comprises:
Receive the order of reduction transmitting power when described controlled end after, according to the predefined step-length reduction of step-length or the described system signal transmission power of high-level signaling appointment;
Receive the order of raising transmitting power when described controlled end after, according to the predefined step-length raising of step-length or the described system signal transmission power of high-level signaling appointment.
Alternatively, described max threshold-max threshold is adjusted threshold value=minimum threshold and is adjusted threshold value-minimum threshold.
Described max threshold alarm signal and described minimum threshold alarm signal are reported to high level.
When described main control end was the base station, described controlled end was a user terminal; When described main control end was user terminal, described controlled end was the base station.
By above technical scheme provided by the invention as can be seen, the present invention in conjunction with demodulation before and after the demodulation signal quality generate control command and carry out power control, noise recently characterizes on the basis of received signal quality after with demodulation, introduced the preceding signal interference ratio of demodulation, be used for characterizing the power level value of received signal with respect to noise and interference signal, having solved inner-loop power control adopts when separating adjustment back signal to noise ratio snr criterion, received signal power that reason causes is too high owing to frequency deviation is excessive etc., thereby other users are produced serious interference, perhaps low excessively owing to intrasystem noise and the received signal power that disturbs reason such as very little to cause, and make the Radio Link problem of unstable.
Power control process of the present invention is a closed-loop control process, for uplink power control, then assists terminal to finish control to the upward signal transmitting power by the base station; For downlink power control, then assist the base station to finish control to the downstream signal transmitting power by terminal.Make all terminals of same carrier frequency, same time slot (for time division multiplex system) arrive the power of base station or the requirement that signal to noise ratio can satisfy quality of service; Make the base station can keep desirable transmitting power, and guaranteed the stability of Radio Link.
Description of drawings
Fig. 1 utilizes the preceding signal interference ratio of demodulation to produce the flow chart of power control command in the prior art;
Fig. 2 is the realization flow figure of the inventive method;
Fig. 3 is the first realization flow figure that main control end generates power control command in the inventive method;
Fig. 4 is the second realization flow figure that main control end generates power control command in the inventive method.
Embodiment
When core of the present invention is that mobile communication system carried out inner-loop power control, generate control command in conjunction with signal quality before the demodulation and after the demodulation and carry out power control, promptly noise recently characterizes on the basis of received signal quality after with demodulation, introduce the preceding signal interference ratio of demodulation, be used for characterizing the power level value of received signal with respect to noise and interference signal.Adjust threshold value, allow signal to noise ratio change threshold under not adjustment of the power situation by signal interference ratio alarm threshold, signal interference ratio that main control end preestablishes before the receiving signal demodulation.When system moves, main control end is according to the quality of received signal, obtain preceding signal interference ratio of receiving signal demodulation and the signal to noise ratio after the demodulation respectively, compare with the different threshold values of setting with signal to noise ratio according to the signal interference ratio that obtains then, generate power control command according to comparative result, and give controlled end with the power control command transmitting that generates, controlled end can be adjusted its signal emitted power according to the power control command of receiving.
Power control process of the present invention is a closed-loop control process, therefore, in order to understand the present invention better, at first closed-loop control process of the prior art is done a simple declaration.
As shown in Figure 1, the flow process of utilizing the preceding signal interference ratio of demodulation to produce power control command in the prior art may further comprise the steps:
Step 101: the signal interference ratio SIR that obtains received signal from measurement module;
Step 102: obtain the signal interference ratio desired value SIRtarget that external circule power control is set;
Step 103: judge whether to exist the state of not adjusting;
If there is no do not adjust state, then enter step 104: judge that whether SIR is greater than SIRtarget;
If SIR＞SIRtarget then enters step 105: generate the order of downward modulation transmitting power; Otherwise, enter step 106: generate the order of raising transmitting power;
Do not adjust state if exist, then enter step 107: judge whether SIR surpasses SIRtarget one threshold value Th_donothing, i.e. SIR＞SIRtarget+Th_donothing;
If surpass, then enter step 108: generate the order of downward modulation transmitting power;
Otherwise, enter step 109: continue to judge whether SIR is lower than SIRtarget one threshold value Th_donothing, i.e. SIR＜SIRtarget-Th_donothing;
If be lower than, then enter step 110: generate the order of raising transmitting power;
Otherwise, enter step 111: generate uncomfortable haircuting and penetrate the order of power;
Then, enter step 112: finish.
It is similar to the above to utilize signal to noise ratio after the demodulation to produce the flow process of power control command separately, does not repeat them here.
The present invention is according to the outer shroud target value set, utilizes before the demodulation that noise recently generates control command jointly behind the signal interference ratio and demodulation, avoided some may jeopardize the power adjustment that system or Radio Link connect.If uplink power control then assists terminal to finish its adjustment to up transmit signal power by the base station; If downlink power control then assists the base station to finish its adjustment to the downlink signal power by terminal.For convenience, the end that will be responsible for generating control command below is called main control end when up (be the base station, be terminal when descending), will be called controlled end when up (be terminal, be the base station when descending) according to the end that control command is adjusted self transmitting power.
The present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 2 shows the realization flow of the inventive method, may further comprise the steps:
Step 201: main control end is obtained preceding signal interference ratio SIR of receiving signal demodulation and the signal to noise ratio snr after the demodulation respectively according to the quality of received signal.
Described signal interference ratio SIR represents the ratio of available signal power and interfering signal power.
Described signal to noise ratio snr is represented the ratio of the average power and the variance of the soft bit of data after demodulating.
Step 202: generate power control command according to signal interference ratio SIR and signal to noise ratio snr.
If only allow power control to being in harmonious proportion downward modulation on the transmitting power, then can only generate the control command that improves transmitting power or reduce transmitting power;
If allow power control that transmitting power is not adjusted, then except that generating the control command that improves transmitting power or reduction transmitting power, also can generate uncomfortable haircuting and penetrate the control command of power according to actual needs.
Step 203: give controlled end with the power control command transmitting that generates.
Step 204: controlled end is adjusted its signal emitted power according to the power control command of receiving.
Receive the order of reduction transmitting power when controlled end after, according to the predefined step-length reduction of step-length or the system signal transmission power of high-level signaling appointment;
Receive the order of raising transmitting power when controlled end after, according to the predefined step-length raising of step-length or the system signal transmission power of high-level signaling appointment;
When controlled end receive uncomfortable haircut penetrate the order of power after, then keep original transmitting power.
In order to guarantee the stability of system wireless link, make signal transmission power obtain mild adjustment, need the system master end to preestablish following parameter:
Signal interference ratio alarm threshold before the receiving signal demodulation comprises signal interference ratio max threshold Limit_max and signal interference ratio minimum threshold Limit_min;
Signal interference ratio is adjusted threshold value, comprises that max threshold is adjusted threshold value Thres_max and minimum threshold is adjusted threshold value Thres_min;
Wherein, Thres_max≤Limit_max, Thres_min 〉=Limit_min;
In addition, also to set signal to noise ratio change threshold Thres_donothing under not adjustment of the permission power situation.
In the mobile communication system power control process, according to actual needs, can only allow power control to being in harmonious proportion downward modulation on the transmitting power; Also can allow power control that transmitting power is not adjusted.Usually after system start-up, determine to select which kind of mode by configuration order by high level.
Reduce if only allow power control that transmitting power is gone up to be in harmonious proportion, then main control end can only generate the order that reduces transmitting power or improve transmitting power.
In this case, the flow process of control command generation is as shown in Figure 3:
At first, in step 301: obtain the signal-to-noise target value SNRtarget that external circule power control is set;
Step 302: judge that whether SIR is more than or equal to max threshold Limit_max;
If SIR 〉=Limit_max then enters step 303: generate the order that requires to reduce transmitting power, generate max threshold warning mark Flag_max simultaneously;
Otherwise, enter step 304: judge that further whether SIR is smaller or equal to minimum threshold Limit_min;
If SIR≤Limit_min then enters step 305: generate the order that requires to improve transmitting power, generate minimum threshold warning mark Flag_min simultaneously;
Otherwise, enter step 306: judge that further whether SNR is greater than signal-to-noise target value SNRtarget;
If SNR＞SNRtarget then enters step 307: generate the order that requires to reduce transmitting power;
Otherwise, enter step 308: generate the order that requires to improve transmitting power;
Above-mentioned different capacity control command generates laggard to step 309: finish this control command generative process.
If allow power control that transmitting power is not adjusted, then main control end can generate reduction transmitting power or raising transmitting power or uncomfortable haircuting and penetrate the order of power.
In this case, equally need be according to current signal interference ratio SIR and the signal to noise ratio snr generation power control command of recording.
The generative process of power control command is as follows:
As SIR during greater than signal interference ratio max threshold Limit_max, generate the order that reduces transmitting power, generate the max threshold alarm signal simultaneously;
As SIR during less than signal interference ratio minimum threshold Limit_min, generate the order that improves transmitting power, generate the minimum threshold alarm signal simultaneously;
As SIR during more than or equal to signal interference ratio minimum threshold Limit_min and smaller or equal to signal interference ratio max threshold Limit_max, the signal-to-noise target value SNRtarget that sets according to the signal to noise ratio snr and the external circule power control of actual measurement generates power control command, is specially:
1. when max threshold is adjusted threshold value Thres_max≤SIR≤max threshold Limit_max, if SNR＞SNRtarget then generates the order that requires to reduce transmitting power; Otherwise generating requires uncomfortable haircuting to penetrate the order of power;
2. when minimum threshold Limit_min≤SIR≤minimum threshold is adjusted threshold value Thres_min, if SNR＜SNRtarget then generates the order that requires to improve transmitting power; Otherwise generating requires uncomfortable haircuting to penetrate the order of power.
3. when minimum threshold is adjusted threshold value Thres_min＜SIR＜max threshold and is adjusted threshold value Thres_max,
If SNR＞SNRtarget+ signal to noise ratio change threshold Thres_donothing then generates the order that reduces transmitting power;
If SNR＜SNRtarget-signal to noise ratio change threshold Thres_donothing then generates the order that improves transmitting power;
Otherwise, generate uncomfortable haircuting and penetrate the order of power.
The product process of above-mentioned power control command is as shown in Figure 4:
At first, in step 401: obtain the signal-to-noise target value SNRtarget that external circule power control is set;
Step 402: judge that whether SIR is greater than max threshold Limit_max;
If SIR＞Limit_max then enters step 403: generate the order that requires to reduce transmitting power, generate max threshold warning mark Flag_max simultaneously;
Otherwise, enter step 404: judge further whether SIR adjusts threshold value Thres_max more than or equal to max threshold;
If SIR 〉=Thres_max then enters step 405: judge that whether SNR is greater than signal-to-noise target value SNRtarget;
If SNR＞SNRtarget then enters step 406: generate the order that requires to reduce transmitting power;
Otherwise, enter step 407: generate uncomfortable haircuting and penetrate the order of power;
If SIR＜Thres_max then enters step 408: judge that further whether SIR is less than minimum threshold Limit_min;
If SIR＜Limit_min then enters step 409: generate the order that requires to improve transmitting power, generate minimum threshold warning mark Flag_min simultaneously;
Otherwise, enter step 410: judge further whether SIR adjusts threshold value Thres_min smaller or equal to minimum threshold;
If SIR≤Thres_min then enters step 411: judge that whether SNR is less than signal-to-noise target value SNRtarget;
If SNR＜SNRtarget then enters step 412: generate the order that requires to improve transmitting power;
Otherwise, enter step 413: generate uncomfortable haircuting and penetrate the order of power;
If Thres_min＜SNR＜Thres_max then enters step 414: judge that whether Δ=SNR-SNRtarget is greater than the signal to noise ratio change threshold Thres_donothing that sets;
If Δ＞Thres_donothing then enters step 415: generate the order that requires to reduce transmitting power;
Otherwise, enter step 416: judge that further whether Δ=SNR-SNRtarget is less than the signal to noise ratio change threshold Thres_donothing that sets;
If Δ＜-Thres_donothing, then enter step 417: generate the order that requires to improve transmitting power;
If | Δ |＜=Thres_donothing then enters step 418: generate uncomfortable haircuting and penetrate the order of power;
Above-mentioned different capacity control command enters step 419: finish this control command generative process after generating.
In order further to simplify implementation procedure, can make max threshold-max threshold adjust threshold value=minimum threshold and adjust threshold value-minimum threshold, should value characterize with parameter Thres_Limit (can be 0), when then allowing power control that transmitting power is not adjusted, the generative process of power control command can be described below:
(1) when SIR＞Limit_max, only allow to generate the order that requires to reduce transmitting power, generate warning mark Flag_max simultaneously;
(2) when Limit_max-Thres_Limit≤SIR≤Limit_max,, require uncomfortable haircuting to penetrate the order of power otherwise then generate if SNR＞SNRtarget then generates the order that requires to reduce transmitting power;
(3) when Limit_min+Thres_Limit＜SIR＜Limit_max-Thres_Limit, if SNR＞SNRtarget+Thres_donothing, then generate the order that requires to reduce transmitting power, if SNR＜SNRtarget-Thres_donothing, then generate the order that requires to improve transmitting power, all the other situations then generate and require uncomfortable haircuting to penetrate the order of power;
(4) when Limit_min≤SIR≤Limit_min+Thres_Limit,, require uncomfortable haircuting to penetrate the order of power otherwise then generate if SNR＜SNRtarget then generates the order that requires to improve transmitting power;
(5) when SIR＜Limit_min, only allow to generate the order that requires to improve transmitting power, generate warning mark Flag_min simultaneously.
In actual applications, can set the value of above-mentioned each parameter according to actual needs, such as, parameters such as Limit_max, Limit_min, Thres_Limit, Thres_donothing need high level to be configured, and SNRtarget is by external circule power control module settings and adjustment.
After warning mark Flag_max, Flag_min reported to high level, high level can trigger processing such as switching or pressure broken string to this terminal.
The present invention is applicable to the wireless communication system that all adopt CDMA technology, for example TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access (WCDMA)), CDMA2000, IS95 etc., in addition, also be applicable to and only adopt other communication systems that the signal to noise ratio balance criterion is carried out power control after the demodulation.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (11)
1, a kind of method of mobile communication system power control is used for carrying out inner loop power control according to the outer shroud target value set, it is characterized in that, may further comprise the steps:
A, main control end be according to the quality of received signal, obtains signal interference ratio before the receiving signal demodulation and the signal to noise ratio after the demodulation respectively;
B, generate power control command according to described signal interference ratio and described signal to noise ratio;
C, give controlled end with described power control command transmitting;
D, described controlled end are adjusted its signal emitted power according to the power control command of receiving.
2, the method for mobile communication system power control according to claim 1 is characterized in that described method also comprises step:
Described main control end preestablishes the signal interference ratio alarm threshold before the receiving signal demodulation, comprises signal interference ratio max threshold and signal interference ratio minimum threshold;
Set signal interference ratio and adjust threshold value, comprise that max threshold is adjusted threshold value and minimum threshold is adjusted threshold value;
Described max threshold is adjusted threshold value smaller or equal to described max threshold, and described minimum threshold is adjusted threshold value more than or equal to described minimum threshold;
Set and allow signal to noise ratio change threshold under not adjustment of the power situation.
3, the method for mobile communication system power control according to claim 2 is characterized in that, reduces if only allow power control that transmitting power is gone up to be in harmonious proportion, and then described step B specifically comprises:
B1, when described signal interference ratio during more than or equal to described signal interference ratio max threshold, generate the order that reduces transmitting power, generate the max threshold alarm signal simultaneously;
B2, when described signal interference ratio during smaller or equal to described signal interference ratio minimum threshold, generate the order that improves transmitting power, generate the minimum threshold alarm signal simultaneously;
B3, when described signal interference ratio during greater than described signal interference ratio minimum threshold and less than described signal interference ratio max threshold, the signal-to-noise target value of setting according to described signal to noise ratio and external circule power control generates power control command.
4, the method for mobile communication system power control according to claim 3 is characterized in that described step B3 is specially:
When described signal to noise ratio during, generate the order that reduces transmitting power greater than described signal-to-noise target value;
When described signal to noise ratio during, generate the order that improves transmitting power smaller or equal to described signal-to-noise target value.
5, the method for mobile communication system power control according to claim 2 is characterized in that, if the control of fair row power does not adjust transmitting power, then described step B specifically comprises:
B1 ', when described signal interference ratio during greater than described signal interference ratio max threshold, generate the order that reduces transmitting power, generate the max threshold alarm signal simultaneously;
B2 ', when described signal interference ratio during less than described signal interference ratio minimum threshold, generate the order that improves transmitting power, generate the minimum threshold alarm signal simultaneously;
B3 ', when described signal interference ratio during more than or equal to described signal interference ratio minimum threshold and smaller or equal to described signal interference ratio max threshold, adjust the signal-to-noise target value that threshold value, described signal to noise ratio and external circule power control set according to described signal interference ratio and generate power control command.
6, the method for mobile communication system power control according to claim 5 is characterized in that described step B3 ' comprising:
B31 ', when max threshold is adjusted threshold value≤signal interference ratio≤max threshold, if described signal to noise ratio greater than described signal-to-noise target value, then generates the order that reduces transmitting power, penetrate the order of power otherwise generate uncomfortable haircuting;
B32 ', when minimum threshold≤signal interference ratio≤minimum threshold is adjusted threshold value, if described signal to noise ratio less than described signal-to-noise target value, then generates the order that improves transmitting power, penetrate the order of power otherwise generate uncomfortable haircuting;
B33 ', when minimum threshold is adjusted threshold value＜signal interference ratio＜max threshold and is adjusted threshold value, signal-to-noise target value and the described signal to noise ratio change threshold set according to described signal to noise ratio and external circule power control generate power control command.
7, the method for mobile communication system power control according to claim 6 is characterized in that described step B33 ' is specially:
When described signal to noise ratio during, generate the order that reduces transmitting power greater than described signal-to-noise target value and described signal to noise ratio change threshold sum;
When described signal to noise ratio during, generate the order that improves transmitting power less than the difference of described signal-to-noise target value and described signal to noise ratio change threshold;
Otherwise, generate uncomfortable haircuting and penetrate the order of power.
8, according to the method for each described mobile communication system power control of claim 3 to 7, it is characterized in that described step D comprises:
Receive the order of reduction transmitting power when described controlled end after, according to the predefined step-length reduction of step-length or the described system signal transmission power of high-level signaling appointment;
Receive the order of raising transmitting power when described controlled end after, according to the predefined step-length raising of step-length or the described system signal transmission power of high-level signaling appointment.
9, the method for mobile communication system power control according to claim 2 is characterized in that, described max threshold-max threshold is adjusted threshold value=minimum threshold and adjusted threshold value-minimum threshold.
10, according to the method for claim 3 or 5 described mobile communication system power controls, it is characterized in that described method also comprises:
Described max threshold alarm signal and described minimum threshold alarm signal are reported to high level.
11, the method for mobile communication system power control according to claim 1 is characterized in that when described main control end was the base station, described controlled end was a user terminal; When described main control end was user terminal, described controlled end was the base station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100744224A CN100512042C (en) | 2005-05-24 | 2005-05-24 | Method of power control for mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100744224A CN100512042C (en) | 2005-05-24 | 2005-05-24 | Method of power control for mobile communication system |
Publications (2)
| Publication Number | Publication Date |
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| CN1870455A true CN1870455A (en) | 2006-11-29 |
| CN100512042C CN100512042C (en) | 2009-07-08 |
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| CNB2005100744224A Active CN100512042C (en) | 2005-05-24 | 2005-05-24 | Method of power control for mobile communication system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036252A (en) * | 2010-12-27 | 2011-04-27 | 中国人民解放军理工大学 | Receiver beacon transmission-based cognitive radio adaptive interference protection method |
| CN101197799B (en) * | 2006-12-05 | 2011-08-10 | 夏普株式会社 | Digital demodulating apparatus and controlling method thereof |
| CN101711055B (en) * | 2009-12-10 | 2012-02-08 | 中兴通讯股份有限公司 | Method, network element and system for controlling transmission power |
| 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 |
| CN102802251A (en) * | 2011-05-25 | 2012-11-28 | 鼎桥通信技术有限公司 | Inner-loop power control method and equipment |
| WO2013159595A1 (en) * | 2012-04-26 | 2013-10-31 | 华为技术有限公司 | Inner-loop power control processing method and system, and radio network controller |
| CN106332253A (en) * | 2015-06-17 | 2017-01-11 | 普天信息技术有限公司 | Control method of master control sending power |
| CN114364004A (en) * | 2021-12-13 | 2022-04-15 | 北京佰才邦技术股份有限公司 | Uplink power control method and device and electronic equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108882317B (en) * | 2017-05-11 | 2021-09-14 | 中兴通讯股份有限公司 | Communication link control method and device |
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2005
- 2005-05-24 CN CNB2005100744224A patent/CN100512042C/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197799B (en) * | 2006-12-05 | 2011-08-10 | 夏普株式会社 | Digital demodulating apparatus and controlling method thereof |
| CN101711055B (en) * | 2009-12-10 | 2012-02-08 | 中兴通讯股份有限公司 | Method, network element and system for controlling transmission power |
| 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 |
| CN102036252A (en) * | 2010-12-27 | 2011-04-27 | 中国人民解放军理工大学 | Receiver beacon transmission-based cognitive radio adaptive interference protection method |
| CN102802251A (en) * | 2011-05-25 | 2012-11-28 | 鼎桥通信技术有限公司 | Inner-loop power control method and equipment |
| CN102802251B (en) * | 2011-05-25 | 2015-08-19 | 鼎桥通信技术有限公司 | Inner loop power control method and equipment |
| WO2013159595A1 (en) * | 2012-04-26 | 2013-10-31 | 华为技术有限公司 | Inner-loop power control processing method and system, and radio network controller |
| CN106332253A (en) * | 2015-06-17 | 2017-01-11 | 普天信息技术有限公司 | Control method of master control sending power |
| CN106332253B (en) * | 2015-06-17 | 2019-10-08 | 普天信息技术有限公司 | The control method of master control transmission power |
| CN114364004A (en) * | 2021-12-13 | 2022-04-15 | 北京佰才邦技术股份有限公司 | Uplink power control method and device and electronic equipment |
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| Publication number | Publication date |
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| CN100512042C (en) | 2009-07-08 |
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Address after: 201612 Shanghai City, Songjiang Caohejing Xuhui District hi tech park Xinzhuan Highway No. 518, building 6, room 101 Patentee after: Shanghai Ultimate Power Communication Technology Co., Ltd. Address before: 201700 Shanghai city Qingpu District No. 599 new road, building 3, No. 103 Patentee before: Shanghai Ultimate Power Communication Technology Co., Ltd. |
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Address after: 201612 Shanghai Caohejing Songjiang hi tech park Xinzhuan Highway No. 518, building 6, room 101 Patentee after: Shanghai Ultimate Power Communication Technology Co., Ltd. Address before: 201612 Shanghai City, Songjiang Caohejing Xuhui District hi tech park Xinzhuan Highway No. 518, building 6, room 101 Patentee before: Shanghai Ultimate Power Communication Technology Co., Ltd. |