CN103378911B - The control method of terminal reception antenna and terminal receiving system - Google Patents
The control method of terminal reception antenna and terminal receiving system Download PDFInfo
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Abstract
The present invention relates to wireless communication field, disclose a kind of control method and terminal receiving system of terminal reception antenna.In the present invention, the index of the expression signal receiving quality of each reception antenna of periodic measurement terminal; Then according to the desired value measured, whether the reception antenna detected corresponding to this desired value is reliable; Last when controlling fast the reception antenna of terminal, according to the measured value for controlling fast of reliable reception antenna, control fast.The present invention, by detecting the reliability of reception antenna in real time, selects the measured value of reliable reception antenna to come to control fast according to reliability judged result, ensure that terminal still can normally work when part reception antenna is unreliable.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of control method of terminal reception antenna and terminal receiving system.
Background technology
The basic demand of Long Term Evolution (LongTermEvolution is called for short " LTE ") terminal is dual-antenna reception, and the Main Function of dual-antenna reception is: one is to provide diversity gain, and two is for spatial reuse provides possibility, improves channel capacity.In order to improve reliability, the process such as the measurement of terminal is also all carried out based on two reception antennas usually, and conventional method is averaged by the measured value of two reception antennas.
But find in reality test, under the environment of the wired test in laboratory, frequent appearance only connects a reception antenna or wherein reception antenna situation about getting loose, also the situation that a reception antenna damages likely is there is in addition in the physical end course of work, data now on a reception antenna will become insincere, one flexibly terminal still can normally should work when only losing a reception antenna performance.
For common measured value, when the data of a reception antenna become insincere after, can think that the reception data class of this antenna is similar to the end and makes an uproar, so for Reference Signal Received Power (ReferenceSignalReceivingPower, be called for short " RSRP "), the measured value impacts such as noise power are not very large, but wait measured value impact larger on timing, the sudden change of timing measured value may be there is, quick timing controlled (the AutomaticTimingControl of terminal can be caused like this, be called for short " ATC ") disorderly, thus cause terminal step-out, cisco unity malfunction.In simple terms, at present by the method that the measured value of two reception antennas is directly averaged, terminal cisco unity malfunction in the situations such as a reception antenna damage will be caused.
As shown in Figure 1, for simplifying, only depict the closely-related module with this problem, the function of other modules is divided into known in the industry receiver structure conventional at present.
Summary of the invention
The object of the present invention is to provide a kind of control method and terminal receiving system of terminal reception antenna, make terminal in reception antenna, have part not connect, when damaging, still can normally work.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of control method of terminal reception antenna, comprise following steps:
The index of the expression signal receiving quality of each reception antenna of measuring terminals;
According to the described desired value measured, whether the reception antenna detected corresponding to this desired value is reliable;
When controlling fast the reception antenna of terminal, according to the measured value for controlling fast of reliable reception antenna, carry out described quick control;
Wherein, described index be measured as periodic measurement.
Embodiments of the present invention additionally provide a kind of terminal receiving system, comprise: control module fast, desired value acquisition module, reliability detection module, measured value acquisition module;
Wherein, desired value acquisition module, for the index of the expression signal receiving quality of each reception antenna of periodic measurement terminal; Described desired value acquisition module triggers described reliability detection module after measuring each time;
Reliability detection module, for the desired value obtained according to the measurement of described desired value module, whether the reception antenna detected corresponding to this desired value is reliable;
Measured value acquisition module, for obtaining measured value, described measured value is the measured value for controlling fast of reliable reception antenna;
Quick control module, for the measured value obtained according to described measured value acquisition module, controls reception antenna;
Wherein, described desired value acquisition module index be measured as periodic measurement.
Embodiment of the present invention in terms of existing technologies, by detecting the reliability of reception antenna in real time, select the measured value of reliable reception antenna to come to control fast according to reliability judged result, thus ensure that terminal still can normally work when part reception antenna is unreliable.
In addition, when the number of the reception antenna that described terminal comprises is 2, whether reliable by the reception antenna detected with under type corresponding to described desired value:
The difference of the desired value of measure two reception antennas and the first thresholding preset are compared;
If described difference is greater than described first thresholding, then judge that in described two reception antennas, the reception antenna that desired value is less is unreliable, and the reception antenna that desired value is larger is reliable;
If described difference is less than or equal to described first thresholding, then judge that described two reception antennas are all reliable.
By which, the difference of the desired value of measure two reception antennas and the first thresholding preset are compared, do not need to carry out reliability judgement to every root antenna, decrease operand, improve the speed of service of terminal.
In addition, whether the reception antenna that also can detect in the following manner corresponding to described desired value is reliable:
The desired value of each reception antenna measured is compared with the second thresholding preset respectively;
Reception antenna corresponding to the desired value being greater than described second thresholding is judged to be reliable reception antenna; Reception antenna corresponding to the desired value being less than or equal to described second thresholding is judged to be insecure reception antenna.
By which, the desired value of each reception antenna measured is compared with the second thresholding preset respectively, respectively reliability judgement is carried out to every root antenna, make terminal can comprise the reception antenna being greater than 2, thus there is application scenarios widely, and in multiple antennas situation, method is simpler, more easily realizes.
In addition, the index of described expression signal receiving quality is signal to noise ratio snr or Reference Signal Received Power RSRP.Due to become when the data of part reception antenna insincere after, the measured value institutes such as Reference Signal Received Power RSRP or noise power are influenced is not very large, so use the measured value of RSRP or the measured value of signal to noise ratio snr can reliably judge to receive the reliable antenna of data.
In addition, after detecting reliable reception antenna, in the following manner according to the measured value for controlling fast of reliable reception antenna, described quick control can be carried out:
According to the described desired value corresponding to each reliable reception antenna, be weighted for the measured value controlled fast described in each reliable reception antenna;
Described quick control is carried out according to the measured value after described weighting.
Because the desired value corresponding to each reception antenna is weighted the measured value for controlling fast, the ratio that each reception antenna is shared in the measured value for controlling fast is determined according to reliability, ensure that the accuracy controlled fast, improve communication quality.
In addition, after detecting reliable reception antenna, also in the following manner according to the measured value for controlling fast of reliable reception antenna, described quick control can be carried out:
The measured value being used for described in each reliable reception antenna controlling fast is averaged;
According to described average after measured value carry out described quick control.
Calculated the measured value being used for controlling fast by which, it calculates simple, is easy to realize.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of conventional receiver in prior art;
Fig. 2 is the flow chart of the control method of terminal reception antenna according to first embodiment of the invention;
Fig. 3 is the flow chart of the control method of terminal reception antenna according to second embodiment of the invention;
Fig. 4 is the schematic diagram of the terminal receiving system according to four embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.But, persons of ordinary skill in the art may appreciate that in each execution mode of the present invention, proposing many ins and outs to make reader understand the application better.But, even without these ins and outs with based on the many variations of following execution mode and amendment, each claim of the application technical scheme required for protection also can be realized.
First execution mode of the present invention relates to a kind of control method of terminal reception antenna, the index of the method first expression signal receiving quality of each reception antenna of measuring terminals; After measuring each time, according to the desired value measured, whether the reception antenna detected corresponding to this desired value is reliable, then when controlling fast the reception antenna of terminal, according to the measured value for controlling fast of reliable reception antenna, control fast; Wherein, index be measured as periodic measurement.For terminal, there are two reception antennas to be below specifically described.
As shown in Figure 2, the first index of the expression signal receiving quality of each reception antenna of measuring terminals, namely performs step S201, measures the index of the expression signal receiving quality of two reception antennas.
Due to become when the data of part reception antenna insincere after, the measured value institutes such as Reference Signal Received Power RSRP or noise power are influenced is not very large, so use the measured value of RSRP or the measured value of signal to noise ratio snr can reliably judge to receive the reliable antenna of data.Therefore, in the present embodiment, the index of expression signal receiving quality is signal to noise ratio snr or Reference Signal Received Power RSRP.
Then, according to the desired value measured in step S202 to S204, whether the reception antenna detected corresponding to this desired value is reliable.
Specifically, in step S202, the difference of the desired value of measure two reception antennas and the first thresholding preset are compared, namely judges whether the difference of the desired value of two reception antennas measured is greater than the first default thresholding; Wherein the concrete numerical value of the first thresholding can be an empirical value, experimentally emulation obtains, such as, arrange multiple numerical value to test respectively as the first thresholding, experimentally result determines the concrete value of the first thresholding, experimentally simulation result, the first thresholding is greater than 3dB usually can ensure receptivity, and the concrete value of the first thresholding does not limit at this.
If difference is greater than the first thresholding, then performs step S203, judge that in two reception antennas, the reception antenna that desired value is less is unreliable, and the reception antenna that desired value is larger is reliable;
If difference is less than or equal to the first thresholding, then performs step 204, judge that two reception antennas are all reliable.
Such as, the index of expression signal receiving quality is RSRP, and two reception antennas that terminal comprises are respectively reception antenna 1 and reception antenna 2, and the RSRP value of the reception antenna 1 measured is R1, the RSRP value of the reception antenna 2 measured is R2, and the first default thresholding is T1.So, in step S202, can according to formula | R1-R2| > T1 judges whether the difference of the desired value of two reception antennas is greater than the first thresholding, if be greater than T1, then enter step S203, judge that, in R1 and R2, the larger reception antenna (as reception antenna 2) corresponding to a RSRP value (as R2) is reliable; If be less than or equal to T1, then enter step S204, judge reception antenna 1 and reception antenna 2 all reliable.
If adopt signal to noise ratio snr as representing the index of signal receiving quality, its processing mode and RSRP similar, do not repeat them here.
By which, the difference of the desired value of measure two reception antennas and the first thresholding preset are compared, do not need to carry out reliability judgement to every root antenna, decrease operand, improve the speed of service of terminal.
After detecting reliable reception antenna, performing step S205, obtaining the measured value for controlling fast of reliable reception antenna.Such as, when entering into this step after step S203, obtain the measured value for controlling fast of reception antenna 2 (assuming that R2 is greater than R1); When entering into this step after step S204, obtain the measured value for controlling fast of reception antenna 1 and reception antenna 2.Wherein, can be frequency deviation measurement value, timing measured value etc. for the measured value controlled fast, belong to the known concept of this area, do not repeat them here.
Then, in step S206, according to the measured value for controlling fast obtained, reception antenna is controlled.
Specifically, if the measured value obtained in step S205 is the measured value for controlling fast of reception antenna 2, in step S206, the measured value of reception antenna 2 is so directly used to control fast; If the measured value obtained in step S205 is the measured value for controlling fast of reception antenna 1 and reception antenna 2, then in step S206, according to the RSRP value corresponding to two reception antennas, being weighted for the measured value controlled fast two reception antennas, finally controls fast according to the measured value after weighting.Such as, specifically add the method that temporary can adopt similar maximum-ratio combing, be namely weighted addition according to the measured value of ratio to reception antenna of the measured value of two reception antennas, concrete method of weighting is that industry is known, does not repeat them here.
Because the desired value corresponding to each reception antenna is weighted the measured value for controlling fast, the ratio that each reception antenna is shared in the measured value for controlling fast is determined according to reliability, ensure that the accuracy controlled fast, improve communication quality.
Compared with prior art, present embodiment detects the reliability of reception antenna in real time, selects the measured value of reliable reception antenna to come to control fast according to reliability judged result, thus ensures that terminal still can normally work when part reception antenna is unreliable.
Second execution mode of the present invention relates to a kind of control method of terminal reception antenna.Second execution mode is roughly the same with the first execution mode, main distinction part is: in the first embodiment, the difference of the desired value of measure two reception antennas and the first thresholding preset are compared, thus whether the reception antenna detected corresponding to this desired value is reliable.And in second embodiment of the invention, the desired value of each reception antenna measured compared with the second thresholding preset respectively, thus whether reception antenna corresponding to Testing index value is reliable.
Present embodiment still has two reception antennas for terminal and is specifically described, and as shown in Figure 3, step S301 is consistent with the step S201 of the first execution mode of the present invention, does not repeat them here for idiographic flow.
Whether the reception antenna corresponding to step S302 to S303 Testing index value is reliable:
Specifically, in step s 302, the desired value of measure two reception antennas is compared with the second thresholding preset respectively, namely judge whether the desired value measuring two reception antennas obtained is greater than the second default thresholding; Wherein the concrete numerical value of the second thresholding can be that a characterization signal receives normal empirical value, is typically expressed as the lowest demodulation thresholding of this system receiver, is not specifically limited at this.
Then perform step S303, the reception antenna corresponding to the desired value being greater than the second thresholding is judged to be reliable reception antenna; Reception antenna corresponding to the desired value being less than or equal to the second thresholding is judged to be insecure reception antenna.
Such as if the desired value R1 of reception antenna 1 is greater than the second thresholding T2, and the desired value R2 of reception antenna 2 is less than the second thresholding T2, i.e. R1 > T2, R2 < T2, then judge that reception antenna 1 is as reliable reception antenna; If the desired value of two reception antennas is all greater than the second thresholding, i.e. R1 > T2, R2 > T2, then judge that two reception antennas are reliable reception antenna.
After detecting reliable reception antenna, performing step S304, obtaining the measured value for controlling fast of reliable reception antenna.Step S304 to S305 is identical with step S205 to S206, does not repeat them here.
It should be noted that, due in the present embodiment, that the desired value of each reception antenna measured is compared with the second thresholding preset respectively, respectively reliability judgement is carried out to every root antenna, therefore the terminal in present embodiment can comprise the reception antenna being greater than 2, thus has application scenarios widely, and in multiple antennas situation, method is simpler, more easily realizes.
3rd execution mode of the present invention relates to a kind of control method of terminal reception antenna.3rd execution mode is roughly the same with the first execution mode, and main distinction part is: in the first embodiment, according to the desired value corresponding to each reliable reception antenna, to being weighted for the measured value controlled fast of each reliable reception antenna; Then control fast according to the measured value after weighting.And in second embodiment of the invention, the measured value being used for controlling fast of each reliable reception antenna is averaged; Then control fast according to the measured value after average.Calculated the measured value being used for controlling fast by which, it calculates simple, is easy to realize.
The step of various method divides above, just in order to be described clearly, can merge into a step or splitting some step, being decomposed into multiple step, when realizing as long as comprise identical logical relation, all in the protection range of this patent; To adding inessential amendment in algorithm or in flow process or introducing inessential design, but the core design not changing its algorithm and flow process is all in the protection range of this patent.
Four embodiment of the invention relates to a kind of terminal receiving system, as shown in Figure 4, comprises: control module fast, desired value acquisition module, reliability detection module, measured value acquisition module.
Desired value acquisition module, for the index of the expression signal receiving quality of each reception antenna of periodic measurement terminal; Described desired value acquisition module triggers described reliability detection module after measuring each time.Wherein, the index of expression signal receiving quality is signal to noise ratio snr or Reference Signal Received Power RSRP.
Reliability detection module, for the desired value obtained according to the measurement of desired value module, whether the reception antenna detected corresponding to this desired value is reliable.This reliability detection module comprises following submodule:
Comparison sub-module, the difference for the desired value by measure two reception antennas compares with the first thresholding preset;
According to the comparative result of comparison sub-module, decision sub-module, for judging that whether reception antenna is reliable; Decision criteria is as follows:
If difference is greater than the first thresholding, then judge that in two reception antennas, the reception antenna that desired value is less is unreliable, and the reception antenna that desired value is larger is reliable;
If difference is less than or equal to the first thresholding, then judge that two reception antennas are all reliable.
Measured value acquisition module, for obtaining measured value, measured value is the measured value for controlling fast of reliable reception antenna.
Quick control module, for the measured value obtained according to measured value acquisition module, controls reception antenna.This quick control module comprises following submodule:
Weighting submodule, for the desired value corresponding to each reliable reception antenna, to being weighted for the measured value controlled fast of each reliable reception antenna;
Control submodule, for controlling fast according to the measured value after weighting.
Be not difficult to find, present embodiment is the system embodiment corresponding with the first execution mode, and present embodiment can be worked in coordination with the first execution mode and be implemented.The relevant technical details mentioned in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the first execution mode.
It is worth mentioning that, each module involved in present embodiment is logic module, and in actual applications, a logical block can be a physical location, also can be a part for a physical location, can also realize with the combination of multiple physical location.In addition, in order to outstanding innovative part of the present invention, the unit not too close with solving technical problem relation proposed by the invention is not introduced in present embodiment, but this does not show the unit that there is not other in present embodiment.
Fifth embodiment of the invention relates to a kind of terminal receiving system.5th execution mode is roughly the same with the 4th execution mode, main distinction part is: in the 4th execution mode, the difference of the desired value of measure two reception antennas and the first thresholding preset compare by reliability detection module, then judge that whether each reception antenna is reliable according to comparative result.And in fifth embodiment of the invention, the desired value of each reception antenna measured compares with the second thresholding preset by reliability detection module respectively, then judge that whether each reception antenna is reliable according to comparative result.
Specifically, reliability detection module comprises comparison sub-module and decision sub-module:
Comparison sub-module is used for the desired value of each reception antenna measured to compare with the second thresholding preset respectively;
Decision sub-module is used for judging that whether reception antenna is reliable according to the comparative result of comparison sub-module; Decision criteria is as follows: the reception antenna corresponding to the desired value being greater than the second thresholding is judged to be reliable reception antenna; Reception antenna corresponding to the desired value being less than or equal to the second thresholding is judged to be insecure reception antenna.
Because the second execution mode and present embodiment are mutually corresponding, therefore present embodiment can be worked in coordination with the second execution mode and be implemented.The relevant technical details mentioned in second execution mode is still effective in the present embodiment, and the technique effect that can reach in this second embodiment can realize in the present embodiment too, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the second execution mode.
Sixth embodiment of the invention relates to a kind of terminal receiving system.6th execution mode is roughly the same with the 4th execution mode, main distinction part is: in the 4th execution mode, the desired value of quick control module corresponding to each reliable reception antenna, to being weighted for the measured value controlled fast of each reliable reception antenna; Then control fast according to the measured value after weighting.And in sixth embodiment of the invention, the measured value being used for controlling fast of each reliable reception antenna is averaged by quick control module; Then control fast according to the measured value after average.
Specifically, quick control module comprises following submodule:
Average submodule, for being averaged the measured value being used for controlling fast of each reliable reception antenna;
Control submodule, the measured value after average for basis controls fast.
Because the 3rd execution mode is mutually corresponding with present embodiment, therefore present embodiment can be worked in coordination with the 3rd execution mode and be implemented.The relevant technical details mentioned in 3rd execution mode is still effective in the present embodiment, and the technique effect that can reach in the third embodiment can realize in the present embodiment too, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the 3rd execution mode.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above realize specific embodiments of the invention, and in actual applications, various change can be done to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (8)
1. a control method for terminal reception antenna, is characterized in that, comprises following steps:
The index of the expression signal receiving quality of each reception antenna of measuring terminals;
According to the described desired value measured, whether the reception antenna detected corresponding to this desired value is reliable;
When controlling fast the reception antenna of terminal, according to the measured value for controlling fast of reliable reception antenna, carry out described quick control;
Wherein, described index be measured as periodic measurement; The number of the reception antenna that described terminal comprises is 2;
Described according to desired value, detect in the whether reliable step of reception antenna corresponding to this desired value, comprise following sub-step:
The difference of the desired value of measure two reception antennas and the first thresholding preset are compared;
If described difference is greater than described first thresholding, then judge that in described two reception antennas, the reception antenna that desired value is less is unreliable, and the reception antenna that desired value is larger is reliable;
If described difference is less than or equal to described first thresholding, then judge that described two reception antennas are all reliable.
2. the control method of terminal reception antenna according to claim 1, is characterized in that, the index of described expression signal receiving quality is signal to noise ratio snr or Reference Signal Received Power RSRP.
3. the control method of terminal reception antenna according to any one of claim 1 to 2, is characterized in that, the measured value for controlling fast of the reliable reception antenna of described basis, carries out, in the step of described quick control, comprising following sub-step:
According to the described desired value corresponding to each reliable reception antenna, be weighted for the measured value controlled fast described in each reliable reception antenna;
Described quick control is carried out according to the measured value after described weighting.
4. the control method of terminal reception antenna according to any one of claim 1 to 2, is characterized in that, the measured value for controlling fast of the reliable reception antenna of described basis, carries out, in the step of described quick control, comprising following sub-step:
The measured value being used for described in each reliable reception antenna controlling fast is averaged;
According to described average after measured value carry out described quick control.
5. a terminal receiving system, is characterized in that, comprises: control module fast, desired value acquisition module, reliability detection module, measured value acquisition module;
Wherein, desired value acquisition module, for the index of the expression signal receiving quality of each reception antenna of periodic measurement terminal; Described desired value acquisition module triggers described reliability detection module after measuring each time;
Reliability detection module, for the desired value obtained according to the measurement of described desired value module, whether the reception antenna detected corresponding to this desired value is reliable;
Measured value acquisition module, for obtaining measured value, described measured value is the measured value for controlling fast of reliable reception antenna;
Quick control module, for the measured value obtained according to described measured value acquisition module, controls reception antenna;
Wherein, the number of reception antenna that described terminal comprises is 2;
Described reliability detection module comprises following submodule:
Comparison sub-module, the difference for the desired value by measure two reception antennas compares with the first thresholding preset;
According to the comparative result of described comparison sub-module, decision sub-module, for judging that whether reception antenna is reliable; Decision criteria is as follows:
If described difference is greater than described first thresholding, then judge that in described two reception antennas, the reception antenna that desired value is less is unreliable, and the reception antenna that desired value is larger is reliable;
If described difference is less than or equal to described first thresholding, then judge that described two reception antennas are all reliable.
6. terminal receiving system according to claim 5, is characterized in that, the index of described expression signal receiving quality is signal to noise ratio snr or Reference Signal Received Power RSRP.
7. the terminal receiving system according to any one of claim 5 to 6, is characterized in that, described quick control module comprises following submodule:
Weighting submodule, for the described desired value corresponding to each reliable reception antenna, is weighted for the measured value controlled fast described in each reliable reception antenna;
Control submodule, for carrying out described quick control according to the measured value after described weighting.
8. the terminal receiving system according to any one of claim 5 to 6, is characterized in that, described quick control module comprises following submodule:
Average submodule, for being averaged the measured value being used for described in each reliable reception antenna controlling fast;
Control submodule, for according to described average after measured value carry out described quick control.
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| CN1400741A (en) * | 2001-07-27 | 2003-03-05 | 罗技欧洲公司 | Automatic tuning of radio peripheral equipment |
| CN101904193A (en) * | 2007-12-18 | 2010-12-01 | 安立股份有限公司 | Signal measuring device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1400741A (en) * | 2001-07-27 | 2003-03-05 | 罗技欧洲公司 | Automatic tuning of radio peripheral equipment |
| CN101904193A (en) * | 2007-12-18 | 2010-12-01 | 安立股份有限公司 | Signal measuring device and method |
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