CN103178908A - 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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- CN103178908A CN103178908A CN2011104412685A CN201110441268A CN103178908A CN 103178908 A CN103178908 A CN 103178908A CN 2011104412685 A CN2011104412685 A CN 2011104412685A CN 201110441268 A CN201110441268 A CN 201110441268A CN 103178908 A CN103178908 A CN 103178908A
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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, relate in particular to a kind of Capacity Simulation method and device based on MIMO (Multiple-Input Multiple-Out-put, multiple-input and multiple-output) antenna.
Background technology
The MIMO antenna technology is that LTE (Long Term Evolution, Long Term Evolution) system is different from the important technology feature of other mobile communication system.The MIMO antenna technology allows a plurality of antennas sending and receiving signal simultaneously.Transmitting terminal can adopt diversity mode, namely uses the same information of many transmit antennas emission, by the signal of different antenna transmissions being encoded to reach the purpose of diversity, thereby improves the reliability of channel, reduces the error rate; Transmitting terminal can also adopt multiplexer mode, namely uses the different information of different antenna parallel transmissions, reaches the purpose of spatial reuse, thereby improves the capacity of channel.Using the MIMO antenna technology to select suitable transmission mode under different channel circumstances, effectively improved reliability and the capacity of system, is the requisite key technology of LTE system.
In existing Capacity Simulation, all for adopting single-input single-output antenna transmission mode to carry out emulation, adopt the method for wave beam forming file direct modeling, the beam forming gain of smart antenna namely is set in the antenna gain file, and this antenna gain file is imported in emulation tool, and start emulation tool and carry out emulation, the handling process of its simulating scheme is as follows:
At first according to the position of emulation terminal, and the simulated environment parameter that sets in advance, comprise the beam forming gain in the antenna gain file, determine the cqi value of emulation terminal, for example, adopt the link load of following formula Calculation Simulation terminal:
Wherein, Linkloss is link load, and Pathloss is path loss, L
sBe shadow fading, L
pBe building penetration loss,
Be broadcast beam antenna horizontal gain,
Be broadcast beam antenna vertical gain, L
FeederBe feeder loss; Various loss of signal parameters and this emulation terminal are to the distance dependent of antenna, and the beam antenna horizontal gain is relevant with the angle that this emulation terminal is positioned at antenna with the 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 the modulation coding mode that adopts as this emulation terminal of modulation coding mode that should correspondence.
Specifically can be according to each business demodulation threshold scope that sets in advance, determine the business demodulation threshold scope that this cqi value is positioned at, and according to the business demodulation threshold scope that sets in advance and the corresponding relation of modulation coding mode, determine modulation coding mode corresponding to business demodulation threshold scope that this cqi value is positioned at, as the modulation coding mode of this emulation terminal employing.
Then the modulation coding mode that adopts based on this emulation terminal of determining is determined the throughput that this emulation terminal can obtain, as the result of Capacity Simulation.
At present, for the Capacity Simulation scheme of MIMO antenna, adopt handling process same as described above in prior art, when difference is to set in advance business demodulation threshold scope, the additional gain of bringing in the time of can considering to adopt the MIMO antenna comprises diversity gain and spatial multiplexing gain.
Yet, be only the setting of adjustment business demodulation threshold scope, and on the handling process of emulation, the MIMO antenna do not simulated, the impact of the additional gain of bringing in the time of can't reacting accurately employing MIMO antenna on throughput, thereby cause the emulation degree poor, simulation result is inaccurate.
Summary of the invention
The embodiment of the present invention provides a kind of Capacity Simulation method and device based on the MIMO antenna, in order to solve exist in prior art based on cause the inaccurate problem of simulation result in the Capacity Simulation of MIMO antenna because the emulation degree is poor.
The embodiment of the present invention provides a kind of Capacity Simulation method based on the MIMO antenna, comprising:
According to the simulated environment parameter that sets in advance, determine the cqi value of emulation terminal;
According to described cqi value, the cqi value that inquiry sets in advance and the corresponding relation of MIMO antenna gain, determine the MIMO antenna gain corresponding with described cqi value, the MIMO antenna gain is to compare the additional gain of bringing when using non-MIMO antenna transmission signal when using MIMO antenna transmission signal;
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 the MIMO antenna, comprising:
The channel quality determining unit is used for determining the cqi value of emulation terminal according to the simulated environment parameter that sets in advance;
The gain determining unit, be used for according to described cqi value, the cqi value that inquiry sets in advance and the corresponding relation of MIMO antenna gain, determine the MIMO antenna gain corresponding with described cqi value, the MIMO antenna gain is to compare the additional gain of bringing when using non-MIMO antenna transmission signal when using MIMO antenna transmission signal;
The throughput determining unit is used 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, will be by the inquiry to the corresponding relation that sets in advance cqi value and MIMO antenna gain, determine the MIMO antenna gain corresponding with this cqi value, compare the additional gain of bringing when using non-MIMO antenna transmission signal when namely determining corresponding use MIMO antenna transmission signal, and based on the MIMO antenna gain of this cqi value with the correspondence of determining, determine the throughput that this emulation terminal obtains.Because the MIMO antenna gain of the emulation terminal of determining in the simulation process flow process is corresponding with the cqi value of this emulation terminal, namely simulated the MIMO antenna gain situation relevant to the cqi value in the real network, make the emulation degree of MIMO antenna higher, thereby make when carrying out emulation based on the MIMO antenna gain of the correspondence of determining, improved the accuracy of simulation result.
Description of drawings
The flow chart based on the Capacity Simulation method of MIMO antenna that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 for the embodiment of the present invention 1 provide based on one of flow chart of the Capacity Simulation method of MIMO antenna;
Fig. 3 for the embodiment of the present invention 1 provide based on two of the flow chart of the Capacity Simulation method of MIMO antenna;
The flow chart based on the Capacity Simulation method of MIMO antenna that Fig. 4 provides for the embodiment of the present invention 2;
The structural representation based on the Capacity Simulation device of MIMO antenna that Fig. 5 provides for the embodiment of the present invention.
Embodiment
The implementation of the accuracy of simulation result when carrying out Capacity Simulation in order to provide raising based on the MIMO antenna, the embodiment of the present invention provides a kind of Capacity Simulation method and device based on the MIMO antenna, 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 is used for description and interpretation the present invention, is not intended to limit the present invention.And in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
The embodiment of the present invention provides a kind of Capacity Simulation method based on the MIMO antenna, as shown in Figure 1, comprising:
Further, in above-mentioned steps 102, the MIMO antenna gain of determining can also be corresponding with the MIMO antenna configuration mode of this emulation terminal employing; 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 of determining is diversity gain, when adopting multiplexer mode, the MIMO antenna gain of the correspondence of determining is spatial multiplexing gain; And, in above-mentioned steps 103, can also be diversity mode or multiplexer mode according to the MIMO antenna gain, adopt respectively corresponding concrete mode to determine the throughput that emulation terminal obtains.
Below in conjunction with accompanying drawing, with specific embodiment, method provided by the invention and device are described in detail.
Embodiment 1:
Antenna transmission mode take the emulation terminal support in the embodiment of the present invention 1 only comprises diversity mode as example, and above-mentioned Capacity Simulation method based on the MIMO antenna is described in detail, and as shown in Figure 2, specifically comprises following treatment step:
Be specifically as follows the position according to emulation terminal, and the simulated environment parameter corresponding with this position that sets in advance, comprise beam forming gain and the various loss of signal parameter of antenna, determine the cqi value of this emulation terminal.The cqi value specifically can adopt signal to noise ratio SINR to represent, also can adopt the ratio value representation of valid signal strengths and received signal strength.
When determining the cqi value of this emulation terminal, at first adopt the link load of following formula Calculation Simulation terminal:
Wherein, Linkloss is link load, and Pathloss is path loss, L
sBe shadow fading, L
pBe building penetration loss,
Be broadcast beam antenna horizontal gain,
Be broadcast beam antenna vertical gain, L
FeederBe feeder loss; Various loss of signal parameters and this emulation terminal are to the distance dependent of antenna, and the beam antenna horizontal gain is relevant with the angle that this emulation terminal is positioned at antenna with the 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, the simulated environment parameter can arrange according to the real network situation, and with the simulated environment parameter that sets in advance, as needed fundamental simulation parameter information in emulation, is stored in basic information database.
Further, when determining corresponding MIMO antenna gain in this step, it is also conceivable that the factor of the MIMO antenna configuration mode that this emulation terminal adopts, the MIMO antenna gain of namely determining can also be corresponding with the MIMO antenna configuration mode of this emulation terminal employing, is specially:
According to this cqi value, and the MIMO antenna configuration mode of this emulation terminal employing, cqi value and MIMO antenna configuration mode that inquiry sets in advance, corresponding relation with the MIMO antenna gain, determine corresponding with this cqi value, and the MIMO antenna gain corresponding with the MIMO antenna configuration mode of this emulation terminal employing, wherein, based on the antenna configuration situation in present real network, MIMO antenna configuration mode can be divided according to transmitting terminal antenna amount and receiving terminal antenna amount.
In the embodiment of the present invention, the MIMO antenna gain is to compare the additional gain of bringing when using non-MIMO antenna transmission signal when using MIMO antenna transmission signal, this additional gain comprises diversity gain and spatial multiplexing gain, in the present embodiment 1, this emulation terminal is only supported diversity mode, so the MIMO antenna gain of the correspondence of determining 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 the real network situation, and the above-mentioned corresponding relation that will set in advance, as needed fundamental simulation parameter information in emulation, be stored in basic information database; Above-mentioned corresponding relation specifically can adopt the mode of form to represent, also can adopt the mode of curve chart to represent, is described in detail no longer for example at this.
Because emulation terminal in the present embodiment 1 is only supported diversity mode, this corresponding MIMO antenna gain is corresponding diversity gain, in this step, this corresponding diversity gain can use the form of cqi value gain to represent, diversity gain that namely should correspondence characterizes the lifting of cqi value, and unit is db.
During due to the employing diversity mode, transmitting terminal uses the many information that antenna transmission is identical, receiving terminal is by the many information that antenna reception is identical, so, compare the single-input single-output antenna transmission mode, improved the received signal strength of this identical information signal, thereby improved channel quality, so in this step, it is feasible using corresponding diversity gain to characterize the gain of cqi value.
Accordingly, the performed handling process of this step is: the cqi value gain that the diversity gain corresponding according to this characterizes, upgrade this cqi value of determining in above-mentioned steps 201, and the cqi value after the renewal that will obtain is as the final cqi value of this emulation terminal.
Because the unit of this corresponding diversity gain is db, so, the cqi value gain that the diversity gain corresponding according to this characterizes, upgrade this cqi value of determining, be specially determine this corresponding diversity gain and this cqi value of determining and value, this and value are the cqi value after renewal.
Specifically can be according to each business demodulation threshold scope that sets in advance, determine the business demodulation threshold scope that this final cqi value is positioned at, and according to the business demodulation threshold scope that sets in advance and the corresponding relation of modulation coding mode, determine modulation coding mode corresponding to business demodulation threshold scope that this final cqi value is positioned at, as the modulation coding mode of this emulation terminal employing.
In the embodiment of the present invention, the corresponding relation of cqi value and modulation coding mode can arrange according to the real network situation, and this corresponding relation that will set in advance, as needed fundamental simulation parameter information in emulation, be stored in basic information database.
In the embodiment of the present invention 1, only support diversity mode for emulation terminal, this corresponding MIMO antenna gain is the situation of the diversity gain of correspondence, this corresponding diversity gain can also use the form of throughput gain to represent, diversity gain that namely should correspondence can characterize the lifting of throughput, for example, this corresponding diversity gain characterizes the percentage of throughput hoisting.
During due to the employing diversity mode, transmitting terminal uses the many information that antenna transmission is identical, receiving terminal is by the many information that antenna reception is identical, so, compare the single-input single-output antenna transmission mode, improved the received signal strength of this identical information signal, thereby improved channel quality, and then improved throughput, so in this step, it is feasible using corresponding diversity gain to characterize throughput gain.
Accordingly, after above-mentioned steps 202, carry out handling process as shown in Figure 3, specifically comprise the steps:
Step 301, based on the cqi value of this emulation terminal of determining, the corresponding relation of queried channel quality index value and modulation coding mode is determined the modulation coding mode that this emulation terminal adopts.
Specifically can be according to each business demodulation threshold scope that sets in advance, determine the business demodulation threshold scope that this cqi value is positioned at, and according to the business demodulation threshold scope that sets in advance and the corresponding relation of modulation coding mode, determine modulation coding mode corresponding to business demodulation threshold scope that this cqi value is positioned at, as the modulation coding mode of this emulation terminal employing.
Step 302, based on the modulation coding mode that this emulation terminal of determining adopts, determine the throughput that this emulation terminal can obtain, specifically can adopt definite mode of the prior art to determine, no longer be described in detail at this.
Step 303, the throughput gain that characterizes according to diversity gain that should correspondence in above-mentioned steps 202, upgrade the throughput of determining in above-mentioned steps 302, and the final throughput that obtains as this emulation terminal of the throughput after the renewal that will obtain, and as the result of Capacity Simulation.
Characterize the percentage of throughput hoisting due to this corresponding diversity gain, so, the throughput gain that the diversity gain corresponding according to this characterizes, upgrade the throughput of determining, be specially and determine this throughput gain and the product that is somebody's turn to do the throughput of determining, and determine this product and the throughput that should determine and value, should and value be throughput after renewal.
The Capacity Simulation method based on the MIMO antenna that adopts the embodiment of the present invention 1 to provide, because the MIMO antenna gain of the emulation terminal of determining in the simulation process flow process is corresponding with the cqi value of this emulation terminal, namely simulated the MIMO antenna gain situation relevant to the cqi value in the real network, make the emulation degree of MIMO antenna higher, thereby make when carrying out emulation based on the MIMO antenna gain of the correspondence of determining, improved the accuracy of simulation result.
And, the MIMO antenna configuration mode that also adopts with this emulation terminal when the MIMO antenna gain of the emulation terminal of determining is at once, namely simulated the MIMO antenna gain situation relevant to MIMO antenna configuration mode in the real network, make the emulation degree to the MIMO antenna further improve, thereby further improved the accuracy of simulation result.
Embodiment 2:
Antenna transmission mode with the emulation terminal support in the embodiment of the present invention 2 had both comprised diversity mode, also comprise multiplexer mode, support that namely the multiplexing adaptive model of diversity is example, is described in detail the Capacity Simulation method based on the MIMO antenna, as shown in Figure 4, specifically comprise following treatment step:
Be specifically as follows the position according to emulation terminal, and the simulated environment parameter corresponding with this position that sets in advance, comprise beam forming gain and the various loss of signal parameter of antenna, determine the cqi value of this emulation terminal.The cqi value specifically can adopt signal to noise ratio SINR to represent, also can adopt the ratio value representation of valid signal strengths and received signal strength.
When determining the cqi value of this emulation terminal, at first adopt the link load of following formula Calculation Simulation terminal:
Wherein, Linkloss is link load, and Pathloss is path loss, L
sBe shadow fading, L
pBe building penetration loss,
Be broadcast beam antenna horizontal gain,
Be broadcast beam antenna vertical gain, L
FeederBe feeder loss; Various loss of signal parameters and this emulation terminal are to the distance dependent of antenna, and the beam antenna horizontal gain is relevant with the angle that this emulation terminal is positioned at antenna with the 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, the simulated environment parameter can arrange according to the real network situation, and with the simulated environment parameter that sets in advance, as needed fundamental simulation parameter information in emulation, is stored in basic information database.
Whether this cqi value that judgement is determined reaches multiplexer mode starts threshold value, if do not reach, diversity mode is adopted in expression, enters step 403, if reach, multiplexer mode is adopted in expression, enters step 404.
Further, when determining corresponding spatial multiplexing gain in this step, it is also conceivable that the factor of the MIMO antenna configuration mode that this emulation terminal adopts, the spatial multiplexing gain of namely determining can also be corresponding with the MIMO antenna configuration mode of this emulation terminal employing, is specially:
According to this cqi value, and the MIMO antenna configuration mode of this emulation terminal employing, cqi value and MIMO antenna configuration mode that inquiry sets in advance, corresponding relation with spatial multiplexing gain, determine corresponding with this cqi value, and the spatial multiplexing gain corresponding with the MIMO antenna configuration mode of this emulation terminal employing, wherein, based on the antenna configuration situation in present real network, MIMO antenna configuration mode can be divided 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 the real network situation, and the above-mentioned corresponding relation that will set in advance, as needed fundamental simulation parameter information in emulation, be stored in basic information database; Above-mentioned corresponding relation specifically can adopt the mode of form to represent, also can adopt the mode of curve chart to represent, is described in detail no longer for example at this.
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, this corresponding spatial multiplexing gain can use the form of throughput gain to represent, spatial multiplexing gain that namely should correspondence can characterize the lifting of throughput, for example, this corresponding spatial multiplexing gain characterizes the percentage of throughput hoisting.
During due to the employing multiplexer mode, in many antennas of transmitting terminal use, different antennas transmits respectively different information, receiving terminal receives respectively this different information by many antennas, so, compare the single-input single-output antenna transmission mode, realized multiplexing to transmission space, thereby improved the capacity of channel, and then improved throughput, so in this step, it is feasible using corresponding spatial multiplexing gain to characterize throughput gain.
Accordingly, the performed handling process of this step is: based on the cqi value of this emulation terminal of determining, the corresponding relation of queried channel quality index value and modulation coding mode is determined the modulation coding mode that this emulation terminal adopts.
Specifically can be according to each business demodulation threshold scope that sets in advance, determine the business demodulation threshold scope that this cqi value is positioned at, and according to the business demodulation threshold scope that sets in advance and the corresponding relation of modulation coding mode, determine modulation coding mode corresponding to business demodulation threshold scope that this cqi value is positioned at, as the modulation coding mode of this emulation terminal employing.
In the embodiment of the present invention, the corresponding relation of cqi value and modulation coding mode can arrange according to the real network situation, and this corresponding relation that will set in advance, as needed fundamental simulation parameter information in emulation, be stored in basic information database.
Characterize the percentage of throughput hoisting due to this corresponding spatial multiplexing gain, so, the throughput gain that the spatial multiplexing gain corresponding according to this characterizes, upgrade the throughput of determining, be specially and determine this throughput gain and the product that is somebody's turn to do the throughput of determining, and determine this product and the throughput that should determine and value, should and value be throughput after renewal.
In other embodiment, when emulation terminal is only supported multiplexer mode, the step 402 in above-mentioned flow process shown in Figure 4 and step 403 can be cancelled, directly enter step 404 after step 401, and carry out follow-up handling process, and complete Capacity Simulation, idiographic flow no longer is described in detail at this.
The Capacity Simulation method based on the MIMO antenna that adopts the embodiment of the present invention 2 to provide, because the MIMO antenna gain of the emulation terminal of determining in the simulation process flow process is corresponding with the cqi value of this emulation terminal, namely simulated the MIMO antenna gain situation relevant to the cqi value in the real network, make the emulation degree of MIMO antenna higher, thereby make when carrying out emulation based on the MIMO antenna gain of the correspondence of determining, improved the accuracy of simulation result.
And, the MIMO antenna configuration mode that also adopts with this emulation terminal when the MIMO antenna gain of the emulation terminal of determining is at once, namely simulated the MIMO antenna gain situation relevant to MIMO antenna configuration mode in the real network, make the emulation degree to the MIMO antenna further improve, thereby further improved the accuracy of simulation result.
Based on same inventive concept, according to the Capacity Simulation method based on the MIMO antenna that the above embodiment of the present invention provides, correspondingly, the embodiment of the present invention also provides a kind of Capacity Simulation device based on the MIMO antenna, its structural representation specifically comprises as shown in Figure 5:
Channel quality determining unit 501 is used for determining the cqi value of emulation terminal according to the simulated environment parameter that sets in advance;
Gain determining unit 502, be used for according to described cqi value, the cqi value that inquiry sets in advance and the corresponding relation of MIMO antenna gain, determine the MIMO antenna gain corresponding with described cqi value, the MIMO antenna gain is to compare the additional gain of bringing when using non-MIMO antenna transmission signal when using MIMO antenna transmission signal;
Throughput determining unit 503 is used for the MIMO antenna gain based on described cqi value and described correspondence, determines the throughput that described emulation terminal obtains.
Further, gain determining unit 502, concrete being used for according to described cqi value, and the MIMO antenna configuration mode of described emulation terminal employing, cqi value and MIMO antenna configuration mode that inquiry sets in advance, with the corresponding relation of MIMO antenna gain, definite corresponding with described cqi value, and the MIMO antenna gain corresponding with the described MIMO antenna configuration mode of described emulation terminal employing.
Further, gain determining unit 502, concrete being used for determined corresponding diversity gain when the antenna transmission mode of described emulation terminal employing is diversity mode;
Throughput determining unit 503, the concrete cqi value that is used for characterizing according to described diversity gain gains, upgrade described cqi value, and the cqi value after the renewal that will obtain is as the final cqi value of described emulation terminal; And based on described final cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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; Perhaps
Based on described cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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 of determining, and the throughput after the renewal that will obtain is as the final throughput of described emulation terminal acquisition.
Further, gain determining unit 502, concrete being used for determined corresponding spatial multiplexing gain when the antenna transmission mode of described emulation terminal employing is multiplexer mode;
Throughput determining unit 503, concrete being used for based on described cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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 of determining, and the throughput after the renewal that will obtain is as the final throughput of described emulation terminal acquisition.
Further, said apparatus also comprises:
Transmission mode determining unit 504 before being used for the definite corresponding spatial multiplexing gain of gain determining unit 502, determines that described cqi value reaches multiplexer mode and starts threshold value.
In sum, the scheme that the embodiment of the present invention provides comprises: according to the simulated environment parameter that sets in advance, determine the cqi value of emulation terminal; And according to this cqi value, the cqi value that inquiry sets in advance and the corresponding relation of MIMO antenna gain, determine the MIMO antenna gain corresponding with this cqi value, the MIMO antenna gain is to compare the additional gain of bringing when using non-MIMO antenna transmission signal when using MIMO antenna transmission signal; And based on this cqi value and corresponding MIMO antenna gain, determine the throughput that this emulation terminal obtains.The scheme that adopts the embodiment of the present invention to provide makes the emulation degree of MIMO antenna highlyer, has improved the accuracy of simulation result.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. the Capacity Simulation method based on multiple-input and multiple-output MIMO antenna, is characterized in that, comprising:
According to the simulated environment parameter that sets in advance, determine the cqi value of emulation terminal;
According to described cqi value, the cqi value that inquiry sets in advance and the corresponding relation of MIMO antenna gain, determine the MIMO antenna gain corresponding with described cqi value, the MIMO antenna gain is to compare the additional gain of bringing when using non-MIMO antenna transmission signal when using MIMO antenna transmission signal;
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, the cqi value that inquiry sets in advance and the corresponding relation of MIMO antenna gain, determine the MIMO antenna gain corresponding with described cqi value, be specially:
According to described cqi value, and the MIMO antenna configuration mode of described emulation terminal employing, cqi value and MIMO antenna configuration mode that inquiry sets in advance, corresponding relation with the MIMO antenna gain, definite corresponding with described cqi value, and the MIMO antenna gain corresponding with the described MIMO antenna configuration mode of described emulation terminal employing.
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 of described emulation terminal employing is diversity mode, determine corresponding diversity gain;
Based on the MIMO antenna gain of described cqi value and described correspondence, determine the throughput that described emulation terminal obtains, specifically comprise:
According to the cqi value gain that described diversity gain characterizes, upgrade described cqi value, and the cqi value after the renewal that will obtain is as the final cqi value of described emulation terminal; And based on described final cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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; Perhaps
Based on described cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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 of determining, and the throughput after the renewal that will obtain is as the final throughput of described emulation terminal acquisition.
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 of described emulation terminal employing is multiplexer mode, determine corresponding spatial multiplexing gain;
Based on the MIMO antenna gain of described cqi value and described correspondence, determine the throughput that described emulation terminal obtains, specifically comprise:
Based on described cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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 of determining, and the throughput after the renewal that will obtain is as the final throughput of described emulation terminal acquisition.
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. the Capacity Simulation device based on multiple-input and multiple-output MIMO antenna, is characterized in that, comprising:
The channel quality determining unit is used for determining the cqi value of emulation terminal according to the simulated environment parameter that sets in advance;
The gain determining unit, be used for according to described cqi value, the cqi value that inquiry sets in advance and the corresponding relation of MIMO antenna gain, determine the MIMO antenna gain corresponding with described cqi value, the MIMO antenna gain is to compare the additional gain of bringing when using non-MIMO antenna transmission signal when using MIMO antenna transmission signal;
The throughput determining unit is used 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 determining unit, concrete being used for according to described cqi value, and the MIMO antenna configuration mode of described emulation terminal employing, cqi value and MIMO antenna configuration mode that inquiry sets in advance are with the corresponding relation of MIMO antenna gain, definite corresponding with described cqi value, and the MIMO antenna gain corresponding with the described MIMO antenna configuration mode of described emulation terminal employing.
8. device as described in claim 6 or 7, is characterized in that, described gain determining unit, and concrete being used for determined corresponding diversity gain when the antenna transmission mode of described emulation terminal employing is diversity mode;
Described throughput determining unit, the concrete cqi value that is used for characterizing according to described diversity gain gains, upgrade described cqi value, and the cqi value after the renewal that will obtain is as the final cqi value of described emulation terminal; And based on described final cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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; Perhaps
Based on described cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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 of determining, and the throughput after the renewal that will obtain is as the final throughput of described emulation terminal acquisition.
9. device as described in claim 6 or 7, is characterized in that, described gain determining unit, and concrete being used for determined corresponding spatial multiplexing gain when the antenna transmission mode of described emulation terminal employing is multiplexer mode;
Described throughput determining unit, concrete being used for based on described cqi value, the corresponding relation of queried channel quality index value and modulation coding mode is determined 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 of determining, and the throughput after the renewal that will obtain is as the final throughput of described emulation terminal acquisition.
10. device as claimed in claim 9, is characterized in that, also comprises:
The transmission mode determining unit before being used for the definite corresponding spatial multiplexing gain of described gain determining unit, determines that described cqi value reaches multiplexer mode and starts threshold value.
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