CN103178908B - Capacity simulation method and device based on multiple input multiple output antenna - Google Patents
Capacity simulation method and device based on multiple input multiple output antenna Download PDFInfo
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- CN103178908B CN103178908B CN201110441268.5A CN201110441268A CN103178908B CN 103178908 B CN103178908 B CN 103178908B CN 201110441268 A CN201110441268 A CN 201110441268A CN 103178908 B CN103178908 B CN 103178908B
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Abstract
The invention discloses a capacity simulation method and a device based on a multiple input multiple output antenna. The capacity simulation method based on the multiple input multiple output antenna comprises confirming a channel quality index value of a simulation terminal according to a preset simulation environmental parameter; querying a corresponding relation of the preset channel quality index value and a MIMO (Multiple Input Multiple Output) antenna gain according to the channel quality index value to confirm the MIMO antenna gain which corresponds to the channel quality index value and the MIMO antenna gain is an extra gain when the MIMO antenna is utilized to transmit signals in comparison with the utilization of a non-MIMO antenna; and confirming throughput of the simulation terminal according to the channel index value and the corresponding MIMO antenna gain. The capacity simulation method and the device based on the multi input multi output antenna have the advantages of being high in simulation of the MIMO antenna and improving the accuracy of a simulation result.
Description
Technical field
The present invention relates to the Capacity Simulation technical field in wireless communication technology field, particularly relate to a kind of Capacity Simulation method based on MIMO (Multiple-Input Multiple-Out-put, multiple-input and multiple-output) antenna and device.
Background technology
Mimo antenna technology is the important technology feature that LTE (Long Term Evolution, Long Term Evolution) system is different from other mobile communication system.Mimo antenna technology allows multiple antenna to send and Received signal strength simultaneously.Transmitting terminal can adopt diversity mode, namely uses many transmit antennas to launch same information, by encoding to the signal of different antenna transmissions the object reaching diversity, thus improving the reliability of channel, reducing the error rate; Transmitting terminal can also adopt multiplexer mode, namely uses the different information of different antenna parallel transmissions, reaches the object of spatial reuse, thus improve the capacity of channel.Use mimo antenna technology to select suitable transmission mode under different channel circumstances, effectively improve reliability and the capacity of system, is the requisite key technology of LTE system.
In existing Capacity Simulation, all emulate for employing single-input single-output antenna transmission mode, adopt the method for wave beam forming file direct modeling, namely the beam forming gain of smart antenna is set in antenna gain file, and this antenna gain file is imported in emulation tool, and start emulation tool and emulate, the handling process of its simulating scheme is as follows:
First according to the position of emulation terminal, and the simulated environment parameter pre-set, comprise the beam forming gain in antenna gain file, determine the cqi value of emulation terminal, such as, adopt the link load of following formulae discovery emulation terminal:
Wherein, Linkloss is link load, and Pathloss is path loss, L
sfor shadow fading, L
pfor building penetration loss,
for broadcast beam antenna horizontal gain,
for the gain of broadcast beam antennas orthogonal, L
feederfor feeder loss; Various loss of signal parameter and this emulation terminal are to the distance dependent of antenna, and beam antenna horizontal gain is relevant with the angle that this emulation terminal is positioned at antenna with beam antenna vertical gain.
By the calculating of above-mentioned link load, obtain the cqi value of the emulation terminal of this position, as signal to noise ratio.
After determining the cqi value of emulation terminal, determine the modulation coding mode that this cqi value is corresponding, and using modulation coding mode that the modulation coding mode of this correspondence adopts as this emulation terminal.
Specifically can according to each business demodulation threshold scope pre-set, determine the business demodulation threshold scope that this cqi value is positioned at, and according to the corresponding relation of the business demodulation threshold scope pre-set and modulation coding mode, determine the modulation coding mode that business demodulation threshold scope that this cqi value is positioned at is corresponding, as the modulation coding mode that this emulation terminal adopts.
Then based on the modulation coding mode that this emulation terminal determined adopts, the throughput that this emulation terminal can obtain is determined, as the result of Capacity Simulation.
At present, for the Capacity Simulation scheme of mimo antenna in prior art, adopt handling process same as described above, when difference is to pre-set business demodulation threshold scope, the additional gain brought when adopting mimo antenna can be considered, comprise diversity gain and spatial multiplexing gain.
But, be only the setting of adjustment business demodulation threshold scope, and do not simulate mimo antenna the handling process of emulation, the additional gain brought when cannot react employing mimo antenna is accurately on the impact of throughput, thus causing emulator poor, simulation result is inaccurate.
Summary of the invention
The embodiment of the present invention provides a kind of Capacity Simulation method based on mimo antenna and device, in order to solve exist in prior art based in the Capacity Simulation of mimo antenna because emulator difference causes the inaccurate problem of simulation result.
The embodiment of the present invention provides a kind of Capacity Simulation method based on mimo antenna, comprising:
According to the simulated environment parameter pre-set, determine the cqi value of emulation terminal;
According to described cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with described cqi value, when mimo antenna gain is and uses mimo antenna signal transmission, compare the additional gain brought when using non-mimo antenna signal transmission;
Based on the mimo antenna gain of described cqi value and described correspondence, determine the throughput that described emulation terminal obtains.
The embodiment of the present invention also provides a kind of Capacity Simulation device based on mimo antenna, comprising:
Channel quality determining unit, for according to the simulated environment parameter pre-set, determines the cqi value of emulation terminal;
Gain determination unit, for according to described cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with described cqi value, when mimo antenna gain is and uses mimo antenna signal transmission, compare the additional gain brought when using non-mimo antenna signal transmission;
Throughput determining unit, for the mimo antenna gain based on described cqi value and described correspondence, determines the throughput that described emulation terminal obtains.
Beneficial effect of the present invention comprises:
In the method that the embodiment of the present invention provides, after determining the cqi value of emulation terminal, inquiry to the corresponding relation pre-setting cqi value and mimo antenna gain will be passed through, determine the mimo antenna gain corresponding with this cqi value, the additional gain brought when using non-mimo antenna signal transmission is compared when namely determining corresponding use mimo antenna signal transmission, and based on the mimo antenna gain of this cqi value with the correspondence determined, determine the throughput that this emulation terminal obtains.Mimo antenna gain due to the emulation terminal determined in simulation process flow process is corresponding with the cqi value of this emulation terminal, namely the situation that in real network, mimo antenna gain is relevant to cqi value is simulated, make the emulator of mimo antenna higher, thus when the mimo antenna gain based on the correspondence determined is emulated, improve the accuracy of simulation result.
Accompanying drawing explanation
The flow chart of the Capacity Simulation method based on mimo antenna that Fig. 1 provides for the embodiment of the present invention;
One of flow chart of the Capacity Simulation method based on mimo antenna that Fig. 2 provides for the embodiment of the present invention 1;
The flow chart two of the Capacity Simulation method based on mimo antenna that Fig. 3 provides for the embodiment of the present invention 1;
The flow chart of the Capacity Simulation method based on mimo antenna that Fig. 4 provides for the embodiment of the present invention 2;
The structural representation of the Capacity Simulation device based on mimo antenna that Fig. 5 provides for the embodiment of the present invention.
Embodiment
In order to provide improve carry out Capacity Simulation based on mimo antenna time simulation result the implementation of accuracy, embodiments provide a kind of Capacity Simulation method based on mimo antenna and device, below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein, only for instruction and explanation of the present invention, is not intended to limit the present invention.And when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
The embodiment of the present invention provides a kind of Capacity Simulation method based on mimo antenna, as shown in Figure 1, comprising:
The simulated environment parameter that step 101, basis pre-set, determines the cqi value of emulation terminal.
Step 102, according to this cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with this cqi value, when mimo antenna gain is and uses mimo antenna signal transmission, compare the additional gain brought when using non-mimo antenna signal transmission.
Step 103, mimo antenna gain based on this cqi value and correspondence, determine the throughput that this emulation terminal obtains.
Further, in above-mentioned steps 102, the mimo antenna configuration mode that mimo antenna gain can also be with this emulation terminal adopts determined is corresponding; And, the antenna transmission mode that can also adopt for emulation terminal is that diversity mode or multiplexer mode are distinguished, when adopting diversity mode, the mimo antenna gain of the correspondence determined is diversity gain, when adopting multiplexer mode, the mimo antenna gain of the correspondence determined is spatial multiplexing gain; Further, in above-mentioned steps 103, can also be diversity mode or multiplexer mode according to mimo antenna gain, adopt the throughput that corresponding concrete mode determination emulation terminal obtains respectively.
Below in conjunction with accompanying drawing, with specific embodiment, method provided by the invention and device are described in detail.
Embodiment 1:
Only comprise diversity mode for the antenna transmission mode of emulation terminal support in the embodiment of the present invention 1, the above-mentioned Capacity Simulation method based on mimo antenna be described in detail, as shown in Figure 2, specifically comprise following treatment step:
The simulated environment parameter that step 201, basis pre-set, determines the cqi value of emulation terminal.
Be specifically as follows the position according to emulation terminal, and the simulated environment parameter corresponding with this position pre-set, comprise the beam forming gain of antenna and various loss of signal parameter, determine the cqi value of this emulation terminal.Cqi value specifically can adopt signal to noise ratio SINR to represent, the ratio of valid signal strengths and received signal strength also can be adopted to represent.
When determining the cqi value of this emulation terminal, first adopt the link load of following formulae discovery emulation terminal:
Wherein, Linkloss is link load, and Pathloss is path loss, L
sfor shadow fading, L
pfor building penetration loss,
for broadcast beam antenna horizontal gain,
for the gain of broadcast beam antennas orthogonal, L
feederfor feeder loss; Various loss of signal parameter and this emulation terminal are to the distance dependent of antenna, and beam antenna horizontal gain is relevant with the angle that this emulation terminal is positioned at antenna with beam antenna vertical gain.
By the calculating of above-mentioned link load, obtain the cqi value of the emulation terminal of this position.
In the embodiment of the present invention, simulated environment parameter can be arranged according to real network situation, and the simulated environment parameter that will pre-set, as fundamental simulation parameter information required in emulation, be stored in basic information database.
Step 202, after determining the cqi value of this emulation terminal, according to this cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with this cqi value, as the mimo antenna gain of this emulation terminal.
Further, when determining corresponding mimo antenna gain in this step, it is also conceivable to the factor of the mimo antenna configuration mode that this emulation terminal adopts, the mimo antenna configuration mode that mimo antenna gain can also be with this emulation terminal adopts namely determined is corresponding, is specially:
According to this cqi value, and the mimo antenna configuration mode that this emulation terminal adopts, inquire about the cqi value and mimo antenna configuration mode that pre-set, with the corresponding relation of mimo antenna gain, determine corresponding with this cqi value, and the mimo antenna gain corresponding with the mimo antenna configuration mode that this emulation terminal adopts, wherein, based on the antenna configuration situation in current real network, mimo antenna configuration mode can divide according to transmitting terminal antenna amount and receiving terminal antenna amount.
In the embodiment of the present invention, the additional gain brought when using non-mimo antenna signal transmission is compared when mimo antenna gain is and uses mimo antenna signal transmission, this additional gain comprises diversity gain and spatial multiplexing gain, due in the present embodiment 1, this emulation terminal only supports diversity mode, so the mimo antenna gain of the correspondence determined in this step is corresponding diversity gain.
When determining corresponding mimo antenna gain in this step, based on above-mentioned corresponding relation can arrange according to real network situation, and the above-mentioned corresponding relation that will pre-set, as fundamental simulation parameter information required in emulation, be stored in basic information database; Above-mentioned corresponding relation specifically can adopt the mode of form to represent, the mode of curve chart also can be adopted to represent, no longer illustrating at this is described in detail.
Step 203, after determining corresponding mimo antenna gain, namely based on the mimo antenna gain of this cqi value and this correspondence, the throughput that this emulation terminal obtains can be determined.
Because in the present embodiment 1, emulation terminal only supports diversity mode, the mimo antenna gain of this correspondence is corresponding diversity gain, in this step, the diversity gain of this correspondence can use the form of cqi value gain to represent, namely the diversity gain of this correspondence characterizes the lifting of cqi value, and unit is db.
During due to employing diversity mode, transmitting terminal uses the information that many antenna transmission are identical, receiving terminal receives identical information by many antennas, so, compare single-input single-output antenna transmission mode, improve the received signal strength of this identical information signal, thus improve channel quality, so in this step, it is feasible for using corresponding diversity gain to characterize the gain of cqi value.
Accordingly, handling process performed by this step is: the cqi value gain characterized according to the diversity gain of this correspondence, upgrade in above-mentioned steps 201 this cqi value determined, and using the final cqi value of the cqi value after the renewal that obtains as this emulation terminal.
Unit due to the diversity gain of this correspondence is db, so, according to the cqi value gain that the diversity gain of this correspondence characterizes, upgrade this cqi value determined, be specially the diversity gain determining this correspondence and this cqi value determined and value, this and value are the cqi value after renewal.
Step 204, based on this final cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that this emulation terminal adopts.
Specifically can according to each business demodulation threshold scope pre-set, determine the business demodulation threshold scope that this final cqi value is positioned at, and according to the corresponding relation of the business demodulation threshold scope pre-set and modulation coding mode, determine the modulation coding mode that business demodulation threshold scope that this final cqi value is positioned at is corresponding, as the modulation coding mode that this emulation terminal adopts.
In the embodiment of the present invention, the corresponding relation of cqi value and modulation coding mode can be arranged according to real network situation, and this corresponding relation that will pre-set, as fundamental simulation parameter information required in emulation, be stored in basic information database.
Step 205, the modulation coding mode adopted based on this emulation terminal of determining, determine the throughput that this emulation terminal can obtain, and as the result of Capacity Simulation, specifically can adopt and of the prior artly determine that mode is determined, no longer be described in detail at this.
In the embodiment of the present invention 1, only diversity mode is supported for emulation terminal, the mimo antenna gain of this correspondence is the situation of corresponding diversity gain, the diversity gain of this correspondence can also use the form of throughput gain to represent, namely the diversity gain of this correspondence can characterize the lifting of throughput, such as, the diversity gain of this correspondence characterizes the percentage of throughput hoisting.
During due to employing diversity mode, transmitting terminal uses the information that many antenna transmission are identical, receiving terminal receives identical information by many antennas, so, compare single-input single-output antenna transmission mode, improve the received signal strength of this identical information signal, thus improve channel quality, and then improve throughput, so in this step, it is feasible for using corresponding diversity gain to characterize throughput gain.
Accordingly, after above-mentioned steps 202, perform handling process as shown in Figure 3, specifically comprise the steps:
Step 301, cqi value based on this emulation terminal determined, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that this emulation terminal adopts.
Specifically can according to each business demodulation threshold scope pre-set, determine the business demodulation threshold scope that this cqi value is positioned at, and according to the corresponding relation of the business demodulation threshold scope pre-set and modulation coding mode, determine the modulation coding mode that business demodulation threshold scope that this cqi value is positioned at is corresponding, as the modulation coding mode that this emulation terminal adopts.
Step 302, the modulation coding mode adopted based on this emulation terminal of determining, determine the throughput that this emulation terminal can obtain, and specifically can adopt of the prior artly to determine that mode is determined, is no longer described in detail at this.
Step 303, the throughput gain characterized according to the diversity gain of this correspondence in above-mentioned steps 202, upgrade the throughput determined in above-mentioned steps 302, and using the final throughput that the throughput after the renewal obtained obtains as this emulation terminal, and as the result of Capacity Simulation.
Diversity gain due to this correspondence characterizes the percentage of throughput hoisting, so, according to the throughput gain that the diversity gain of this correspondence characterizes, upgrade the throughput determined, be specially the product determining this throughput gain and this throughput determined, and determine this product and this throughput determined and value, should and value be the throughput after renewal.
Adopt the Capacity Simulation method based on mimo antenna that the embodiment of the present invention 1 provides, mimo antenna gain due to the emulation terminal determined in simulation process flow process is corresponding with the cqi value of this emulation terminal, namely the situation that in real network, mimo antenna gain is relevant to cqi value is simulated, make the emulator of mimo antenna higher, thus when the mimo antenna gain based on the correspondence determined is emulated, improve the accuracy of simulation result.
And, the mimo antenna configuration mode also adopted with this emulation terminal when the mimo antenna gain of the emulation terminal determined to time corresponding namely the situation that in real network, mimo antenna gain is relevant to mimo antenna configuration mode is simulated, make to improve further the emulator of mimo antenna, thus further increase the accuracy of simulation result.
Embodiment 2:
Both diversity mode was comprised with the antenna transmission mode of emulation terminal support in the embodiment of the present invention 2, also comprise multiplexer mode, namely support that the multiplexing adaptive model of diversity is example, the Capacity Simulation method based on mimo antenna is described in detail, as shown in Figure 4, following treatment step is specifically comprised:
The simulated environment parameter that step 401, basis pre-set, determines the cqi value of emulation terminal.
Be specifically as follows the position according to emulation terminal, and the simulated environment parameter corresponding with this position pre-set, comprise the beam forming gain of antenna and various loss of signal parameter, determine the cqi value of this emulation terminal.Cqi value specifically can adopt signal to noise ratio SINR to represent, the ratio of valid signal strengths and received signal strength also can be adopted to represent.
When determining the cqi value of this emulation terminal, first adopt the link load of following formulae discovery emulation terminal:
Wherein, Linkloss is link load, and Pathloss is path loss, L
sfor shadow fading, L
pfor building penetration loss,
for broadcast beam antenna horizontal gain,
for the gain of broadcast beam antennas orthogonal, L
feederfor feeder loss; Various loss of signal parameter and this emulation terminal are to the distance dependent of antenna, and beam antenna horizontal gain is relevant with the angle that this emulation terminal is positioned at antenna with beam antenna vertical gain.
By the calculating of above-mentioned link load, obtain the cqi value of the emulation terminal of this position.
In the embodiment of the present invention, simulated environment parameter can be arranged according to real network situation, and the simulated environment parameter that will pre-set, as fundamental simulation parameter information required in emulation, be stored in basic information database.
Step 402, due in the present embodiment 2, this emulation terminal supports the multiplexing adaptive model of diversity, so this step starts threshold value based on the multiplexer mode pre-set, and judges that this emulation terminal is based on the antenna transmission mode adopted during this cqi value determined.
Judge whether this cqi value determined reaches multiplexer mode and start threshold value, if do not reached, represents and adopts diversity mode, enter step 403, if reached, represents and adopts multiplexer mode, enter step 404.
Step 403, the situation of diversity mode is adopted to perform follow-up simulation process flow process for this emulation terminal, refer to the handling process described by step 202-step 205 in above-described embodiment 1, or step 202 and the handling process described by step 301-step 302, be no longer described in detail at this.
Step 404, adopt the situation of multiplexer mode for this emulation terminal, after determining the cqi value of this emulation terminal, according to this cqi value, inquire about the corresponding relation of cqi value and the spatial multiplexing gain pre-set, determine the spatial multiplexing gain corresponding with this cqi value, as the spatial multiplexing gain of this emulation terminal.
Further, when determining corresponding spatial multiplexing gain in this step, it is also conceivable to the factor of the mimo antenna configuration mode that this emulation terminal adopts, the mimo antenna configuration mode that the spatial multiplexing gain namely determined can also be with this emulation terminal adopts is corresponding, is specially:
According to this cqi value, and the mimo antenna configuration mode that this emulation terminal adopts, inquire about the cqi value and mimo antenna configuration mode that pre-set, with the corresponding relation of spatial multiplexing gain, determine corresponding with this cqi value, and the spatial multiplexing gain corresponding with the mimo antenna configuration mode that this emulation terminal adopts, wherein, based on the antenna configuration situation in current real network, mimo antenna configuration mode can divide according to transmitting terminal antenna amount and receiving terminal antenna amount.
When determining corresponding spatial multiplexing gain in this step, based on above-mentioned corresponding relation can arrange according to real network situation, and the above-mentioned corresponding relation that will pre-set, as fundamental simulation parameter information required in emulation, be stored in basic information database; Above-mentioned corresponding relation specifically can adopt the mode of form to represent, the mode of curve chart also can be adopted to represent, no longer illustrating at this is described in detail.
Step 405, after determining corresponding spatial multiplexing gain, namely based on the spatial multiplexing gain of this cqi value and this correspondence, the throughput that this emulation terminal obtains can be determined.
Because this emulation terminal in this step adopts multiplexer mode, the mimo antenna gain of this emulation terminal is corresponding spatial multiplexing gain, so in this step, the spatial multiplexing gain of this correspondence can use the form of throughput gain to represent, namely the spatial multiplexing gain of this correspondence can characterize the lifting of throughput, such as, the spatial multiplexing gain of this correspondence characterizes the percentage of throughput hoisting.
During due to employing multiplexer mode, transmitting terminal uses antennas different in many antennas to transmit different information respectively, receiving terminal receives this different information respectively by many antennas, so compare single-input single-output antenna transmission mode, what achieve transmission space is multiplexing, thus improve the capacity of channel, and then improve throughput, so in this step, it is feasible for using corresponding spatial multiplexing gain to characterize throughput gain.
Accordingly, the handling process performed by this step is: based on the cqi value of this emulation terminal determined, the corresponding relation of queried channel quality indicator value and modulation coding mode determines the modulation coding mode that this emulation terminal adopts.
Specifically can according to each business demodulation threshold scope pre-set, determine the business demodulation threshold scope that this cqi value is positioned at, and according to the corresponding relation of the business demodulation threshold scope pre-set and modulation coding mode, determine the modulation coding mode that business demodulation threshold scope that this cqi value is positioned at is corresponding, as the modulation coding mode that this emulation terminal adopts.
In the embodiment of the present invention, the corresponding relation of cqi value and modulation coding mode can be arranged according to real network situation, and this corresponding relation that will pre-set, as fundamental simulation parameter information required in emulation, be stored in basic information database.
Step 406, the modulation coding mode adopted based on this emulation terminal of determining, determine the throughput that this emulation terminal can obtain, and specifically can adopt of the prior artly to determine that mode is determined, is no longer described in detail at this.
Step 407, the throughput gain characterized according to the spatial multiplexing gain of this correspondence in above-mentioned steps 404, upgrade the throughput determined in above-mentioned steps 406, and using the final throughput that the throughput after the renewal obtained obtains as this emulation terminal, and as the result of Capacity Simulation.
Spatial multiplexing gain due to this correspondence characterizes the percentage of throughput hoisting, so, according to the throughput gain that the spatial multiplexing gain of this correspondence characterizes, upgrade the throughput determined, be specially the product determining this throughput gain and this throughput determined, and determine this product and this throughput determined and value, should and value be the throughput after renewal.
In other embodiment, when emulation terminal only supports multiplexer mode, the step 402 in flow process shown in above-mentioned Fig. 4 and step 403 can be cancelled, directly step 404 is entered after step 401, and perform follow-up handling process, complete Capacity Simulation, idiographic flow is no longer described in detail at this.
Adopt the Capacity Simulation method based on mimo antenna that the embodiment of the present invention 2 provides, mimo antenna gain due to the emulation terminal determined in simulation process flow process is corresponding with the cqi value of this emulation terminal, namely the situation that in real network, mimo antenna gain is relevant to cqi value is simulated, make the emulator of mimo antenna higher, thus when the mimo antenna gain based on the correspondence determined is emulated, improve the accuracy of simulation result.
And, the mimo antenna configuration mode also adopted with this emulation terminal when the mimo antenna gain of the emulation terminal determined to time corresponding namely the situation that in real network, mimo antenna gain is relevant to mimo antenna configuration mode is simulated, make to improve further the emulator of mimo antenna, thus further increase the accuracy of simulation result.
Based on same inventive concept, according to the Capacity Simulation method based on mimo antenna that the above embodiment of the present invention provides, correspondingly, the embodiment of the present invention additionally provides a kind of Capacity Simulation device based on mimo antenna, its structural representation as shown in Figure 5, specifically comprises:
Channel quality determining unit 501, for according to the simulated environment parameter pre-set, determines the cqi value of emulation terminal;
Gain determination unit 502, for according to described cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with described cqi value, when mimo antenna gain is and uses mimo antenna signal transmission, compare the additional gain brought when using non-mimo antenna signal transmission;
Throughput determining unit 503, for the mimo antenna gain based on described cqi value and described correspondence, determines the throughput that described emulation terminal obtains.
Further, gain determination unit 502, specifically for according to described cqi value, and the mimo antenna configuration mode that described emulation terminal adopts, inquire about the cqi value and mimo antenna configuration mode that pre-set, with the corresponding relation of mimo antenna gain, determine corresponding with described cqi value, and the mimo antenna gain corresponding with the described mimo antenna configuration mode that described emulation terminal adopts.
Further, gain determination unit 502, specifically for when the antenna transmission mode that described emulation terminal adopts is diversity mode, determines corresponding diversity gain;
Throughput determining unit 503, specifically for the cqi value gain characterized according to described diversity gain, upgrade described cqi value, and using the final cqi value of the cqi value after the renewal that obtains as described emulation terminal; And based on described final cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts; And based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains; Or
Based on described cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts; And based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains; And according to the throughput gain that described diversity gain characterizes, upgrade the described throughput determined, and using final throughput that the throughput after the renewal obtained obtains as described emulation terminal.
Further, gain determination unit 502, specifically for when the antenna transmission mode that described emulation terminal adopts is multiplexer mode, determines corresponding spatial multiplexing gain;
Throughput determining unit 503, specifically for based on described cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts; And based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains; And according to the throughput gain that described spatial multiplexing gain characterizes, upgrade the described throughput determined, and using final throughput that the throughput after the renewal obtained obtains as described emulation terminal.
Further, said apparatus, also comprises:
Transmission mode determining unit 504, before determining corresponding spatial multiplexing gain, determines that described cqi value reaches multiplexer mode and starts threshold value for gain determination unit 502.
In sum, the scheme that the embodiment of the present invention provides, comprising: according to the simulated environment parameter pre-set, and determines the cqi value of emulation terminal; And according to this cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with this cqi value, when mimo antenna gain is and uses mimo antenna signal transmission, compare the additional gain brought when using non-mimo antenna signal transmission; And based on this cqi value and corresponding mimo antenna gain, determine the throughput that this emulation terminal obtains.The scheme adopting the embodiment of the present invention to provide, makes the emulator of mimo antenna higher, improves the accuracy of simulation result.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1., based on a Capacity Simulation method for multiple-input and multiple-output mimo antenna, it is characterized in that, comprising:
According to the simulated environment parameter pre-set, determine the cqi value of emulation terminal;
According to described cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with described cqi value, when mimo antenna gain is and uses mimo antenna signal transmission, compare the additional gain brought when using non-mimo antenna signal transmission;
Based on the mimo antenna gain of described cqi value and described correspondence, determine the throughput that described emulation terminal obtains.
2. the method for claim 1, it is characterized in that, according to described cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with described cqi value, be specially:
According to described cqi value, and the mimo antenna configuration mode that described emulation terminal adopts, inquire about the cqi value and mimo antenna configuration mode that pre-set, with the corresponding relation of mimo antenna gain, determine corresponding with described cqi value, and the mimo antenna gain corresponding with the described mimo antenna configuration mode that described emulation terminal adopts.
3. method as claimed in claim 1 or 2, is characterized in that, determines corresponding mimo antenna gain, is specially:
When the antenna transmission mode that described emulation terminal adopts is diversity mode, determine corresponding diversity gain;
Based on the mimo antenna gain of described cqi value and described correspondence, determine specifically to comprise the throughput that described emulation terminal obtains:
According to the cqi value gain that described diversity gain characterizes, upgrade described cqi value, and using the final cqi value of the cqi value after the renewal that obtains as described emulation terminal; And based on described final cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts; And based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains; Or
Based on described cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts; And based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains; And according to the throughput gain that described diversity gain characterizes, upgrade the described throughput determined, and using final throughput that the throughput after the renewal obtained obtains as described emulation terminal.
4. method as claimed in claim 1 or 2, is characterized in that, determines corresponding mimo antenna gain, is specially:
When the antenna transmission mode that described emulation terminal adopts is multiplexer mode, determine corresponding spatial multiplexing gain;
Based on the mimo antenna gain of described cqi value and described correspondence, determine specifically to comprise the throughput that described emulation terminal obtains:
Based on described cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts;
Based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains;
According to the throughput gain that described spatial multiplexing gain characterizes, upgrade the described throughput determined, and using final throughput that the throughput after the renewal obtained obtains as described emulation terminal.
5. method as claimed in claim 4, is characterized in that, before determining corresponding spatial multiplexing gain, also comprises:
Determine that described cqi value reaches multiplexer mode and starts threshold value.
6., based on a Capacity Simulation device for multiple-input and multiple-output mimo antenna, it is characterized in that, comprising:
Channel quality determining unit, for according to the simulated environment parameter pre-set, determines the cqi value of emulation terminal;
Gain determination unit, for according to described cqi value, inquire about the corresponding relation of cqi value and the mimo antenna gain pre-set, determine the mimo antenna gain corresponding with described cqi value, when mimo antenna gain is and uses mimo antenna signal transmission, compare the additional gain brought when using non-mimo antenna signal transmission;
Throughput determining unit, for the mimo antenna gain based on described cqi value and described correspondence, determines the throughput that described emulation terminal obtains.
7. device as claimed in claim 6, it is characterized in that, described gain determination unit, specifically for according to described cqi value, and the mimo antenna configuration mode that described emulation terminal adopts, inquire about the cqi value and mimo antenna configuration mode that pre-set, with the corresponding relation of mimo antenna gain, determine corresponding with described cqi value, and the mimo antenna gain corresponding with the described mimo antenna configuration mode that described emulation terminal adopts.
8. device as claimed in claims 6 or 7, is characterized in that, described gain determination unit, specifically for when the antenna transmission mode that described emulation terminal adopts is diversity mode, determines corresponding diversity gain;
Described throughput determining unit, specifically for the cqi value gain characterized according to described diversity gain, upgrade described cqi value, and using the final cqi value of the cqi value after the renewal that obtains as described emulation terminal; And based on described final cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts; And based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains; Or
Based on described cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts; And based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains; And according to the throughput gain that described diversity gain characterizes, upgrade the described throughput determined, and using final throughput that the throughput after the renewal obtained obtains as described emulation terminal.
9. device as claimed in claims 6 or 7, is characterized in that, described gain determination unit, specifically for when the antenna transmission mode that described emulation terminal adopts is multiplexer mode, determines corresponding spatial multiplexing gain;
Described throughput determining unit, specifically for based on described cqi value, the corresponding relation of queried channel quality indicator value and modulation coding mode, determines the modulation coding mode that described emulation terminal adopts; And based on the modulation coding mode that described emulation terminal adopts, determine the throughput that described emulation terminal obtains; And according to the throughput gain that described spatial multiplexing gain characterizes, upgrade the described throughput determined, and using final throughput that the throughput after the renewal obtained obtains as described emulation terminal.
10. device as claimed in claim 9, is characterized in that, also comprise:
Transmission mode determining unit, before determining corresponding spatial multiplexing gain, determines that described cqi value reaches multiplexer mode and starts threshold value for described gain determination unit.
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