CN112688747A - Channel simulation method - Google Patents
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- CN112688747A CN112688747A CN202011499129.3A CN202011499129A CN112688747A CN 112688747 A CN112688747 A CN 112688747A CN 202011499129 A CN202011499129 A CN 202011499129A CN 112688747 A CN112688747 A CN 112688747A
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- 238000004088 simulation Methods 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005562 fading Methods 0.000 claims abstract description 20
- 238000011156 evaluation Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 description 6
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Abstract
The invention discloses a channel simulation method, which is applied to a channel simulation device and is characterized by comprising the following steps: acquiring a channel fading parameter and a radio frequency signal unit; converting the acquired radio frequency signal into baseband data, performing simulation processing on the baseband data according to the channel fading parameters, converting the simulated baseband data into a radio frequency signal, and transmitting the radio frequency signal; the method comprises the following specific steps: determining the number a of User Equipment (UE) in a current simulation scene; acquiring the position information of each UE in a UEs at a first moment from a channel model library; the channel model base comprises the position information of each UE in b UEs at c moments and channel data between each UE in the b UEs and each cell in M cells at the c moments in a current simulation scene; the invention can not only improve the simulation efficiency of the channel simulation system, but also realize the channel simulation aiming at multiple cells and multiple users, and has larger simulation scale and stronger universality.
Description
Technical Field
The invention relates to the technical field of channel simulation, in particular to a channel simulation method.
Background
Currently, in the existing channel simulation system, the next detection and evaluation work is performed through the calculation of a time domain channel and the calculation of a frequency domain channel in the channel modeling process.
However, the channel calculation part involves a large amount of multiplication, the occupied time is long, and particularly when different configuration parameters are targeted in the same scene, the channel calculation part needs to be repeated every time of channel modeling, so that a large amount of time is consumed, and the efficiency of the existing channel simulation system is low.
Disclosure of Invention
In view of this, the present invention provides a channel simulation method, which not only can improve the simulation efficiency of a channel simulation system, but also can realize channel simulation for multiple cells and multiple users, and has a large simulation scale and strong universality.
In order to achieve the purpose, the invention provides the following technical scheme:
a channel simulation method is applied to a channel simulation device, and is characterized by comprising the following steps: acquiring a channel fading parameter and a radio frequency signal unit; converting the acquired radio frequency signal into baseband data, performing simulation processing on the baseband data according to the channel fading parameters, converting the simulated baseband data into a radio frequency signal, and transmitting the radio frequency signal; the method comprises the following specific steps: determining the number a of User Equipment (UE) in a current simulation scene; acquiring the position information of each UE in a UEs at a first moment from a channel model library; the channel model base comprises the position information of each UE in b UEs at c moments and channel data between each UE in the b UEs and each cell in M cells at the c moments in a current simulation scene; b is more than or equal to a, and the first moment is contained in the c moments; the M cells comprise a serving cell of each UE in the b UEs and a cell adjacent to the serving cell of each UE in the b UEs; the channel data is used for reflecting the quality of the channel; determining a target cell set from the M cells according to the position information of each UE in the a UEs at a first moment; wherein the target cell set includes a serving cell of each of the a UEs and a cell that generates interference to each of the a UEs at the first time; acquiring target channel data between each UE in the a UEs at a first moment and each cell in the target cell set from the channel model base; and executing simulation evaluation according to the target channel data.
Preferably, in the above channel simulation method, the radio frequency signal unit is configured to convert the acquired radio frequency signal into baseband data, and send the baseband data to the channel simulation unit; and converting the baseband data from the channel simulation unit into a radio frequency signal and transmitting the radio frequency signal.
Preferably, in the above channel simulation method, the channel simulation method is configured to perform simulation processing on baseband data from the radio frequency signal unit according to a channel fading parameter from a channel management unit, and send the baseband data after the simulation processing to the radio frequency signal unit.
Preferably, in the above channel simulation method, the channel management unit is configured to generate a channel fading parameter according to a channel model, and send the channel fading parameter to the channel simulation unit.
Preferably, in the above channel simulation method, the method further includes that the plurality of access FPGA chips copy the baseband data received by the plurality of access FPGA chips into a plurality of copies and respectively send the copies to each channel processing FPGA chip; the plurality of channel processing FPGA chips perform simulation processing on the baseband data according to the channel fading parameters; and the plurality of accessed FPGA chips select and output multi-baseband data from the baseband data after the simulation processing.
Preferably, in the above channel simulation method, the FPGA chip is configured to copy baseband data received by the FPGA chip from the radio frequency signal unit into multiple copies and send the copies to each channel processing FPGA chip in the simulation processing module; and selecting and outputting the multi-baseband data from the simulation processing module.
According to the technical scheme, compared with the prior art, the method is applied to the channel simulation system, the position information of the UE and the channel data between the UE and the cells in the current simulation scene are stored, when the actual simulation is executed, a data reading mode is used for replacing a channel calculation part in channel modeling, the channel data between the UE and the cells are not required to be repeatedly calculated when the configuration information in the current simulation scene is different, the channel calculation part which consumes the longest time in the simulation system is reduced, and the simulation efficiency of the channel simulation system is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to a channel simulation method disclosed by the present invention, which is applied to a channel simulation apparatus, the method includes: acquiring a channel fading parameter and a radio frequency signal unit; converting the acquired radio frequency signal into baseband data, performing simulation processing on the baseband data according to the channel fading parameters, converting the simulated baseband data into a radio frequency signal, and transmitting the radio frequency signal; the method comprises the following specific steps: determining the number a of User Equipment (UE) in a current simulation scene; acquiring the position information of each UE in a UEs at a first moment from a channel model library; the channel model base comprises the position information of each UE in b UEs at c moments and channel data between each UE in the b UEs and each cell in M cells at the c moments in a current simulation scene; b is more than or equal to a, and the first moment is contained in the c moments; the M cells comprise a serving cell of each UE in the b UEs and a cell adjacent to the serving cell of each UE in the b UEs; the channel data is used for reflecting the quality of the channel; determining a target cell set from the M cells according to the position information of each UE in the a UEs at a first moment; wherein the target cell set includes a serving cell of each of the a UEs and a cell that generates interference to each of the a UEs at the first time; acquiring target channel data between each UE in the a UEs at a first moment and each cell in the target cell set from the channel model base; and executing simulation evaluation according to the target channel data.
In order to further optimize the technical scheme, the radio frequency signal unit is used for converting the acquired radio frequency signal into baseband data and sending the baseband data to the channel simulation unit; and converting the baseband data from the channel simulation unit into a radio frequency signal and transmitting the radio frequency signal.
In order to further optimize the above technical solution, the channel simulation method is used for performing simulation processing on baseband data from the radio frequency signal unit according to a channel fading parameter from a channel management unit, and sending the baseband data after the simulation processing to the radio frequency signal unit.
In order to further optimize the above technical solution, the channel management unit is configured to generate a channel fading parameter according to a channel model, and send the channel fading parameter to the channel simulation unit.
In order to further optimize the technical scheme, the method also comprises the steps that a plurality of access FPGA chips copy the baseband data received by the access FPGA chips into a plurality of copies and respectively send the copies to each channel processing FPGA chip; the plurality of channel processing FPGA chips perform simulation processing on the baseband data according to the channel fading parameters; and the plurality of accessed FPGA chips select and output multi-baseband data from the baseband data after the simulation processing.
In order to further optimize the technical scheme, the FPGA chip is used for copying baseband data received by the FPGA chip from the radio frequency signal unit into a plurality of parts and respectively sending the parts to each channel processing FPGA chip in the simulation processing module; and selecting and outputting the multi-baseband data from the simulation processing module.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A channel simulation method is applied to a channel simulation device, and is characterized by comprising the following steps: acquiring a channel fading parameter and a radio frequency signal unit; converting the acquired radio frequency signal into baseband data, performing simulation processing on the baseband data according to the channel fading parameters, converting the simulated baseband data into a radio frequency signal, and transmitting the radio frequency signal; the method comprises the following specific steps: determining the number a of User Equipment (UE) in a current simulation scene; acquiring the position information of each UE in a UEs at a first moment from a channel model library; the channel model base comprises the position information of each UE in b UEs at c moments and channel data between each UE in the b UEs and each cell in M cells at the c moments in a current simulation scene; b is more than or equal to a, and the first moment is contained in the c moments; the M cells comprise a serving cell of each UE in the b UEs and a cell adjacent to the serving cell of each UE in the b UEs; the channel data is used for reflecting the quality of the channel; determining a target cell set from the M cells according to the position information of each UE in the a UEs at a first moment; wherein the target cell set includes a serving cell of each of the a UEs and a cell that generates interference to each of the a UEs at the first time; acquiring target channel data between each UE in the a UEs at a first moment and each cell in the target cell set from the channel model base; and executing simulation evaluation according to the target channel data.
2. The channel simulation method according to claim 1, wherein the radio frequency signal unit is configured to convert the acquired radio frequency signal into baseband data, and send the baseband data to the channel simulation unit; and converting the baseband data from the channel simulation unit into a radio frequency signal and transmitting the radio frequency signal.
3. The channel simulation method according to claim 1, wherein the channel simulation method is configured to perform simulation processing on the baseband data from the rf signal unit according to the channel fading parameters from the channel management unit, and send the simulated baseband data to the rf signal unit.
4. The channel simulation method according to claim 3, wherein the channel management unit is configured to generate a channel fading parameter according to a channel model and send the channel fading parameter to the channel simulation unit.
5. The channel simulation method according to claim 1, further comprising the steps of copying the baseband data received by the plurality of access FPGA chips into a plurality of copies and sending the copies to each channel processing FPGA chip; the plurality of channel processing FPGA chips perform simulation processing on the baseband data according to the channel fading parameters; and the plurality of accessed FPGA chips select and output multi-baseband data from the baseband data after the simulation processing.
6. The channel simulation method according to claim 5, wherein the FPGA chip is configured to copy baseband data received by the FPGA chip from the radio frequency signal unit into multiple copies and send the copies to each channel processing FPGA chip in the simulation processing module; and selecting and outputting the multi-baseband data from the simulation processing module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011499129.3A CN112688747A (en) | 2020-12-17 | 2020-12-17 | Channel simulation method |
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| CN202011499129.3A CN112688747A (en) | 2020-12-17 | 2020-12-17 | Channel simulation method |
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| CN112688747A true CN112688747A (en) | 2021-04-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306150A (en) * | 2014-06-27 | 2016-02-03 | 中兴通讯股份有限公司 | Device and method for channel simulation |
| CN110768736A (en) * | 2019-10-08 | 2020-02-07 | 中国联合网络通信集团有限公司 | Channel simulation method and device |
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2020
- 2020-12-17 CN CN202011499129.3A patent/CN112688747A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306150A (en) * | 2014-06-27 | 2016-02-03 | 中兴通讯股份有限公司 | Device and method for channel simulation |
| CN110768736A (en) * | 2019-10-08 | 2020-02-07 | 中国联合网络通信集团有限公司 | Channel simulation method and device |
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Application publication date: 20210420 |