WO2015000432A1 - 一种产生模拟干扰的方法及装置 - Google Patents
一种产生模拟干扰的方法及装置 Download PDFInfo
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- WO2015000432A1 WO2015000432A1 PCT/CN2014/081645 CN2014081645W WO2015000432A1 WO 2015000432 A1 WO2015000432 A1 WO 2015000432A1 CN 2014081645 W CN2014081645 W CN 2014081645W WO 2015000432 A1 WO2015000432 A1 WO 2015000432A1
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- 238000000034 method Methods 0.000 title claims abstract description 84
- 230000005540 biological transmission Effects 0.000 claims abstract description 129
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 21
- 230000002452 interceptive effect Effects 0.000 claims description 60
- 238000004088 simulation Methods 0.000 claims description 12
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- 238000012360 testing method Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 10
- 238000013468 resource allocation Methods 0.000 description 6
- 241001168730 Simo Species 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
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- -1 RANK Proteins 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
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- 238000011156 evaluation Methods 0.000 description 2
- 101000577065 Arabidopsis thaliana Mannose-6-phosphate isomerase 2 Proteins 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0085—Monitoring; Testing using service channels; using auxiliary channels using test signal generators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for generating analog interference.
- the Long Term Evolution (LTE) system supports multiple-input multiple-output (MIMO) transmission.
- MIMO multiple-input multiple-output
- This technology adds spatial dimension division to downlink transmission based on traditional time domain and frequency domain transmission. Provides greater flexibility.
- the LTE physical layer protocol of the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) Release 8 and Release 9 provides multiple transmissions such as downlink open-loop transmit diversity, open-loop spatial multiplexing, closed-loop spatial multiplexing, and beamforming.
- 3GPP, 3rd Generation Partnership Project 3rd Generation Partnership Project
- a neighboring area In addition to a serving cell, a neighboring area often has a certain number of user equipments for data transmission. In order to better evaluate the performance of MIMO in a multi-cell scenario, neighboring cell loading is required to simulate co-channel interference between cells. Neighbor load is usually implemented in two ways: one is to use real user equipment to generate interference in the neighboring area, and the other is to use the analog load mode to generate interference;
- the interference signals generated by different transmission technologies have different properties.
- open-loop transmit diversity technology only transmits a single codeword; closed-loop spatial multiplexing can transmit 1 to 2 codewords and multiple data streams, and the interference signals have certain Directionality;
- the interference signal of beamforming technology also has a certain directionality.
- the effects of interference signals generated by different transmission technologies are also different. Under the same power conditions, the more layers of spatial multiplexing, the more serious the impact of interference. For example, the effect of spatially multiplexed interference sources is greater than the impact of interference sources of transmit diversity.
- An existing method for generating analog interference is to use a single single-stream transmission scheme to generate analog interference, which is equivalent to only one interfering user equipment, or although there are multiple interfering user equipments, all interfering user equipments have unique interference characteristics, ie There is only a single codeword, the rank is equal to 1, and the interference has no directionality.
- analog interference and real user equipment interference there are significant differences between analog interference and real user equipment interference, which makes it impossible to objectively evaluate the performance of commercial systems.
- Embodiments of the present invention provide a method and apparatus for generating analog interference, which are used to obtain analog interference consistent with the interference characteristics of real user equipment, thereby more objectively reflecting system performance in different scenarios, and improving technical evaluation effects and efficiency.
- the first aspect of the present invention provides a method for generating analog interference, which includes: setting one or more simulated load templates, respectively performing interference characteristic parameter configuration on the simulated load template, and using a simulated load template. Simulating one or a class of interferences having the same interference characteristics; generating interference interference by using the interference characteristic parameters configured on the simulated load template, and if multiple simulated load templates are set, the plurality of simulated load templates are simulated The interference is polled in the time domain and/or frequency domain.
- the interference characteristic parameter includes a transmission mode of the analog load template, a resource utilization rate, a rank RANK, a precoding matrix indication PMI, a modulation and coding scheme MCS, and a time domain. Or frequency domain polling granularity;
- the performing interference characteristic parameter configuration on the simulated load template includes: configuring, respectively, a transmission mode, a resource utilization rate, a RANK, a PMI, an MCS, a time domain or a frequency domain polling granularity of the simulated load template.
- configuring a transmission mode of the simulated load template includes: configuring a transmission mode or a transmission scheme of the simulated load template, and accepting or not accepting Constraints on the characteristics of the interfering cell;
- the resource utilization of the simulated load template is configured to: configure resource block RB utilization and transmit power utilization of the interfering cell to control RB utilization or transmit power utilization of the real user equipment UE scheduled by the interfering cell
- the preset threshold is lower than the preset threshold
- the simulated load scheduling is performed.
- the RB utilization rate and the transmit power utilization rate of the real UE scheduled by the interfering cell are higher than the preset threshold, the simulated load does not take effect;
- Configuring the RANK and the PMI of the simulated load template includes: configuring, according to the configured transmission mode, the RANK and the PMI corresponding to the RANK and the PMI are respectively a specific value or a preset value range;
- the MCS of the simulated load template is configured to: configure the MCS of the simulated load template to be a specific value or a preset value range;
- the configuration of the time domain or the frequency domain polling granularity includes: if multiple simulated load templates are set, respectively configure the time domain polling granularity or the frequency domain polling granularity of the simulated load template, which is a specific value or a preset value.
- the preset range of the time domain polling granularity ranges from 1 ms to infinity, and the preset range of the frequency domain polling granularity ranges from 1 to 100 RBs.
- generating the simulated interference using the interference characteristic parameter configured on the simulated load template includes:
- the method further includes:
- the interference characteristic parameter configuration of the simulated load template is copied to one or more analog user devices, and the simulated load is loaded to the interference cell by the analog user equipment to achieve a preset simulated load resource utilization.
- the method further includes:
- the method further includes:
- the RRC protocol layer only configures some of the interference characteristic parameters of the interference characteristic parameter, performing analog power interference on the unconfigured interference characteristic parameter according to a default value or a default manner;
- a preset value range is simulated scrambling according to a method of randomly selecting or polling the selected value range.
- a second aspect of the present invention provides an apparatus for generating analog interference, including:
- a parameter configuration module for respectively configuring interference characteristic parameters for one or more simulated load templates, one analog load template for simulating one or one type of interference having the same interference characteristics; and an analog interference generation module for utilizing The interference characteristic parameter configured on the simulated load template generates analog interference. If multiple analog load templates are set, the interference generated by the multiple simulated load template simulations is polled in the time domain and/or the frequency domain.
- the interference characteristic parameter includes a transmission mode, a resource utilization, a rank RANK, a precoding matrix indication PMI, a modulation and coding scheme, and a time domain of the analog load template. Or frequency domain polling granularity.
- the parameter configuration module is specifically configured to configure a transmission mode of the simulated load template, and perform resource utilization on the simulated load template.
- the configuration of the RANK and the PMI of the simulated load template, the configuration of the MCS of the simulated load template, and the configuration of the time domain or the frequency domain polling granularity wherein the configuration of the transmission mode of the simulated load template includes: The transmission mode or the transmission scheme of the simulated load template, and the constraint of the characteristic license for accepting or not accepting the interfering cell;
- the configuring the resource utilization of the simulated load template includes: configuring the resource block RB utilization rate and the transmit power of the interfering cell The utilization rate is used to control the RB utilization rate of the real UE scheduled by the interfering cell when the RB utilization rate or the transmit power utilization rate of the real user equipment UE scheduled by the interfering cell is lower than a preset threshold.
- the configuration of the RANK and the PMI of the load template includes: configuring the RANK and the PMI corresponding to the RANK and the PMI respectively to be a specific value or a preset value range according to the configured transmission mode; : Configure the MCS of the simulated load profile to be a specific value or preset value range.
- Configuring the time domain or frequency domain polling granularity includes: If multiple simulated load templates are set, configure the time domain round of the simulated load template separately.
- the polling granularity or the frequency domain polling granularity is a specific value or a preset value range, and the preset value range of the time domain polling granularity ranges from 1 ms to infinity, and the frequency domain polling granularity preset value is used.
- the range is from 1 to 100 RB.
- the analog interference generating module is specifically configured to: according to different transmission modes, according to media connection
- the RANK and/or PMI and/or MCS configured in the control layer MAC or radio resource control RRC protocol layer generates analog interference and performs rounds between multiple analog load templates according to the configured time domain or frequency selective polling granularity. Inquiry.
- the apparatus further includes a parameter copying module, where the parameter copying module is configured to: The interference characteristic parameter configuration of the simulated load template is copied to one or more analog user equipments, and the simulated load is loaded to the interference cell by the analog user equipment to achieve a preset simulated load resource utilization.
- the apparatus further includes a parameter copying module, where the parameter copying module is configured to perform interference based
- the mode of the interference characteristic parameter of the simulated load template is copied to one or more analog user equipments, and the simulated load is loaded into the central frequency band and the edge frequency band by the analog user equipment to achieve the Set the simulated load resource utilization.
- the analog interference generating module is further configured to: if the radio resource control RRC protocol layer only If the interference characteristic parameter of the interference characteristic parameter is configured, the analog interference is performed according to a default value or a default mode for the unconfigured interference characteristic parameter; if the RRC protocol layer only configures the interference characteristic parameter
- the part of the interference characteristic parameter is a preset value range, and the analog scrambling is performed according to the method of randomly selecting or polling the selected value range.
- the method and device for generating analog interference provided by the embodiments of the present invention have the following advantages:
- the interference characteristic parameter configuration and the analog interference generation process are implemented, and each interference source is separately configured. Therefore, the analog interference consistent with the interference characteristics of the real user equipment can be obtained, thereby more objectively reflecting the system performance in different scenarios, saving test input and cost, and improving test efficiency.
- FIG. 1 is a schematic flowchart of a method for generating analog interference according to an embodiment of the present invention
- FIG. 2 is a schematic flowchart of another method for generating analog interference according to an embodiment of the present invention
- FIG. 4 is a schematic structural diagram of another apparatus for generating analog interference according to an embodiment of the present invention.
- Embodiments of the present invention provide a method and apparatus for generating analog interference, which are used to obtain analog interference consistent with the interference characteristics of real user equipment, thereby more objectively reflecting system performance in different scenarios, and improving technical evaluation effects and efficiency.
- FIG. 1 is a schematic flowchart of a method for generating analog interference according to an embodiment of the present invention, where the method includes:
- Step 101 Set one or more simulated load templates, respectively perform interference characteristic parameter configuration on the analog load template, and an analog load template is used to simulate one or a type of interference with the same interference characteristics;
- each analog load template corresponds to one type of interfering user equipment, and may be composed of one or more interfering user equipments, but has the same interference characteristics.
- Step 102 Generate interference by using interference characteristic parameters configured on the simulated load template. If multiple simulated load templates are set, interference generated by multiple simulated load template simulations is in a time domain and/or a frequency domain. Polling.
- the interference characteristic parameter includes a transmission mode, a resource utilization rate, a rank RANK, a precoding matrix indicator (PMI, Preceding Matrix Indicator) of the simulated load template,
- the modulation and coding scheme MCS, Modulation and Coding Scheme
- the performing the interference characteristic parameter configuration on the simulated load template may include: a transmission mode and a resource utilization rate of the simulated load template , RANK, PMI, MCS, time domain or frequency domain polling granularity are configured separately.
- Embodiments of the present invention provide a method for generating analog interference to be applied to multiple input multiple outputs.
- the MIMO transmission mode is used as an example to obtain analog interference consistent with the interference characteristics of real user equipment. It can be understood that the method is also applicable to single input and single output (SISO, SISO Single Input Single Out), single input and multiple input. Output (SIMO, SIMO Single Input Multiple Out), MISO Multiple Input Single Out (MISO), where SIMO and SISO have only one transmit antenna and cannot be configured with the corresponding transmission mode or transmission scheme, but by configuration
- the parameters such as the number of users and the MCS can also simulate the interference more objectively, and are not specifically limited herein.
- the method for generating analog interference provided by the embodiment of the present invention is implemented by the process of interference characteristic parameter configuration and analog interference generation, and each interference source is separately configured, so that interference characteristics with real user equipment can be obtained. Consistent analog interference, which more objectively reflects system performance in different scenarios, saves test input and cost, and improves test efficiency.
- FIG. 2 is another schematic flowchart of a method for generating analog interference according to an embodiment of the present invention, where the method includes:
- Step 201 Configure, respectively, a transmission mode, a resource utilization rate, a RANK, a PMI, an MCS, and a time domain or frequency selective polling granularity of the simulated load template.
- configuring the transmission mode of the simulated load template includes:
- the configured transmission mode only affects the data transmission of the Physical Downlink Shared Channel (PDSCH), but does not affect the cell.
- the pilot signal transmission (CRS, Cell-specific Reference Signal) does not affect the values of the pilot transmit power, Pa and Pb, and thus simulates the load and cell interference coordination (ICIC, Inter-Cell Interference Coordination). Can coexist.
- the characteristic license of the interfering cell may include MIMO/BF (beam forming), and may also include an Active Antenna System (AAS), frequency selection. Scheduling, ICIC, power level and other features.
- MIMO/BF beam forming
- AAS Active Antenna System
- ICIC power level and other features.
- configuring resource utilization of the simulated load template includes:
- RB resource block
- UE User Equipment
- the resource utilization rate includes the RB utilization rate and the transmission power utilization rate of the interfering cell, and presets the RB utilization rate or the transmission power utilization threshold;
- configuring the MCS of the simulated load template includes:
- Configure the MCS of the simulated load template to be a specific value or a preset range of values, which is a subset of 0 to 28.
- configuring the time domain or frequency domain polling granularity includes:
- the time domain polling granularity or the frequency domain polling granularity of the simulated load template is respectively configured as a specific value or a preset value range; and the time domain polling granularity is preset.
- the value ranges from 1 ms to infinity, and the preset range of the frequency domain polling granularity ranges from 1 to 100 RB.
- configuring the RANK and PMI of the simulated load template includes:
- the RANK and the PMI corresponding to the configuration are respectively a specific value or a preset value range.
- specific value range refer to Table 1.
- Table 1 shows the valid R ANK/PMI for different transmission modes. Range of values;
- the PMI In the transmission mode based on TM1, TM2, and TM3, the PMI is marked as NA, and the NA is not configured or the configuration is not valid, regardless of whether the Radio Resource Control Protocol (RRC) protocol layer (L3) is The configuration and how to configure the PMI, the physical layer (L1 for short) and the medium access control (MAC, Media Access Control) layer (L2 for short) generate a precoding matrix and a physical downlink shared channel PDSCH signal according to the LTE protocol 36.211; Yes, Ll, L2, and L3 belong to the architectural content of the eNodeB, and are not specifically explained here.
- RRC Radio Resource Control Protocol
- L3 The configuration and how to configure the PMI, the physical layer (L1 for short) and the medium access control (MAC, Media Access Control) layer (L2 for short) generate a precoding matrix and a physical downlink shared channel PDSCH signal according to the LTE protocol 36.211; Yes, Ll, L2, and L3 belong to the architectural content of the eNode
- the PMI is marked as N.A, which means that the PMI is configured regardless of L3, and L2 and L1 generate the beamforming matrix and the PDSCH signal according to the beamforming technique.
- the PMI may or may not be configured. If the PMI is configured, the precoding matrix and the PDSCH signal are generated according to the codebook defined by 36.211 and 36.213. If the PMI is not configured, the PMI is used according to the application. Beamforming techniques to generate beamforming matrices and PDSCH signals.
- the configuration of the analog interference may further include: configuring an analog load frequency selection scheduling switch and configuring a number of analog load templates, where the analog load frequency selection scheduling switch indicates whether the analog load uses frequency selection scheduling. If the switch is on, the frequency selection scheduling is used; if the switch is off, the non-frequency selection scheduling is used; the number of simulated load templates indicates the number of templates of the simulated load, and each template can separately configure the transmission mode or transmission scheme, the scheduled RANK, the PMI, and MCS. If the number of analog load templates is zero, analog interference is generated by the default transmission scheme /Rank/MCS.
- Step 202 Generate analog interference according to a medium access control layer MAC or a radio resource control RRC protocol layer configured RANK and/or PMI and/or MCS according to different transmission modes.
- L2/L3 generates analog interference according to the configured interference characteristic parameter (RANK and/or PMI and/or MCS), and the interference of each analog load template occupies a continuous SimuLoadTimePeriod transmission time interval in the time domain (TTI, Transmission Time) Interval), but does not include the OFDM (Orthogonal Frequency Division Multiplexing) symbol of the physical downlink control channel (PDCCH), in the case of setting multiple analog load templates.
- the configured time domain or frequency selective polling granularity is polled between multiple analog load templates, that is, the interference generated by multiple analog load template simulations is polled in the time domain and/or frequency domain.
- the parameter SimuLoadTimePeriod can be configured according to the actual situation.
- the RANK of the simulated load profile is configured to accept or not accept the MM and BF license control, and does not accept the codebook subset function limit.
- Set 1T 4T to indicate the number of antenna ports of the eNodeB.
- the PMI of the L3 input is meaningless (that is, the PMI is not configured or the configuration is not valid), and L2 generates the precoding matrix according to the protocol 36.211.
- L2 scheduled PMI performs upper and lower limit processing according to the PMI input by RANK and L3, ensuring that the PMI of RANK1 is 0 ⁇ 3, the PMI of RANK2 is 1 ⁇ 2, and the RANK1 and RANK2 represent space.
- the number of independent data streams For 1T, L2 performs analog scrambling according to transmission mode TM1 and the set MCS; for 2 ⁇ or 4 ⁇ , if the transmission mode is ⁇ 1, analog scrambling is performed according to ⁇ 2 and the set MCS; for ⁇ 7, L3 input is not Meaning, L2 and L1 generate beamforming matrices based on the beamforming technique used. For ⁇ 8 or ⁇ 9, if L3 is configured with ⁇ , the precoding matrix is generated according to the code defined by 36.211 and 36.213; if ⁇ is not configured, the beamforming matrix is generated according to the beamforming technique.
- the method for generating analog interference may further include:
- the interference characteristic parameter configuration of the simulated load template is copied to one or more analog user devices, and the simulated load is loaded into the interference cell by the analog user equipment to achieve a preset analog load resource utilization.
- a certain resource allocation mode (the LTE protocol 36.213 defines three resource allocation modes 0, 1, 2), the RB resource allocation of each simulated load user is performed, so that an analog user equipment may be found.
- the RB of the address cannot reach the set analog load level.
- the method for generating analog interference may further include:
- the central user and the edge user of the interfering cell have different power control parameters (Pa and Pb) configurations.
- Pa and Pb power control parameters
- the parameter configuration of each simulated load template configured is still copied to one or more analog user devices (for example, up to 16 user devices), and scrambling through the analog user devices is implemented in the center band and the edge band respectively.
- the set simulated load resource utilization is reached.
- the method for generating the simulated interference may further include: if the RRC protocol layer only configures part of the interference characteristic parameter in the interference characteristic parameter, and according to the default value of the unconfigured interference characteristic parameter Or the default way to perform analog scrambling;
- the simulation is performed according to a random selection or a polling selection within the preset value range. Disturb.
- the scrambling can be simulated according to the default RANK1. If the MCS is not configured, the scrambling can be simulated according to the default MCS, or the MCS can be randomly selected to simulate scrambling, or the MCS can be used in some A range of polling methods to simulate scrambling.
- the embodiment of the present invention can use pseudorandom noise or a specific source signal, and combine the L3 configured transmission mode, RANK, PMI, MCS and other interference characteristic parameters, refer to the protocol 36.211, and generate the PDSCH through the downlink physical channel processing procedure.
- the signal is mapped to the eNodeB antenna for transmission.
- the method for generating analog interference may be performed by the eNodeB, and the analog interference is generated on the eNodeB side according to the configured interference characteristic parameter; or a separate device (such as a signal generator) may be used to generate the analog interference.
- a separate device such as a signal generator
- the method for generating analog interference provided by the embodiment of the present invention is implemented by the process of interference characteristic parameter configuration and analog interference generation, and each interference source is separately configured, and the interference characteristic parameter of the interference source is configured (including The number of interferers, the transmission mode of each interferer, PMI, RANK, MCS, transmit power, time domain or frequency domain polling granularity, etc.). Thereafter, analog interference data is generated and transmitted in the air interface according to the set interference characteristic parameter.
- the interference effect generated by the analog interference is equivalent to the interference effect of the real UE, thereby better evaluating/presenting the performance of a specific technology (such as MIMO, AAS) in a multi-cell scenario.
- a specific technology such as MIMO, AAS
- the method for generating analog interference specifically includes the following steps:
- the interference characteristic parameter is used to simulate one or a class of interferences having the same interference characteristics, including the transmission mode, the rank RANK, and the PMI.
- these interference characteristic parameters can be utilized to generate analog interference.
- the interference characteristic parameter may include at least a transmission mode, a rank RANK, and a PMI, where the configuration process is specifically:
- the configuration of the transmission mode includes: configuring a transmission mode or a transmission scheme of the interference characteristic parameter, and accepting or not accepting the characteristics of the interfering cell;
- the configuration of the RANK and the PMI includes: Configuring the RANK and the PMI corresponding to the RANK and the PMI respectively as a specific value or a preset value range according to the configured transmission mode.
- the interference characteristic parameter may include other parameters, such as resource utilization and MCS, in addition to the transmission mode, the rank RANK, and the PMI.
- the resource utilization rate and The process of MCS configuration is as follows: Configuring resource utilization includes: configuring resource block RB utilization and transmission power utilization of the interfering cell to control when the RB utilization rate or the transmission power utilization rate of the real user equipment UE scheduled by the interfering cell is lower than a preset threshold Performing simulated load scheduling. When the RB utilization rate and the transmit power utilization rate of the real UE scheduled by the interfering cell are higher than the preset threshold, the simulated load does not take effect;
- Configuring the MCS includes: Configuring the MCS to be a specific value or a range of preset values.
- the interference characteristic parameter may include other parameters in addition to the transmission mode, the rank RANK, and the PMI.
- the interference characteristic parameter may further include: The domain and/or frequency domain polling granularity, the process of polling the granularity configuration for the time domain and/or the frequency domain is specifically as follows:
- the time domain polling granularity and/or the frequency domain polling granularity of each group of interference characteristic parameters are respectively configured as a specific value or a preset value range; the preset range of the time domain polling granularity ranges from 1 ms to infinity.
- the preset value of the frequency domain polling granularity ranges from 1 to 100 RB.
- the device generating the analog interference may generate analog interference according to the RANK and/or PMI of the RRC layer configuration based on different transmission modes.
- the apparatus generating the analog interference may generate analog interference according to the RANK and/or PMI of the RRC layer configuration based on different transmission modes, and according to the configured time domain and/or frequency selection polling granularity. Polling between multiple sets of interference characteristic parameters, so that analog interference generated by multiple sets of interference characteristic parameters is polled in the time domain and/or frequency domain.
- the interference characteristic parameter can also be copied to one or more analog user equipment, and the simulated load is simulated by the analog user equipment. Loaded into the interfering cell to achieve the preset analog load resource utilization.
- the device that generates the analog interference can copy the interference characteristic parameter to one or more analog user equipments, and load the analog load into the central frequency band and the edge frequency band through the analog user equipment to achieve Preset simulated analog load resource utilization.
- FIG. 3 is a schematic structural diagram of an apparatus for generating analog interference according to an embodiment of the present invention.
- the apparatus is applied to the method for generating analog interference according to the foregoing embodiment, where the apparatus includes:
- the parameter configuration module 301 is configured to separately perform interference characteristic parameter configuration on one or more simulated load templates, and an analog load template is used to simulate one or a type of interference with the same interference characteristics;
- each analog load template corresponds to one type of interfering user equipment, and may be composed of one or more interfering user equipments, but has the same interference characteristics.
- the analog interference generating module 302 is configured to generate the analog interference by using the interference characteristic parameter configured on the simulated load template, and if multiple simulated load templates are set, the interference generated by the multiple simulated load template simulations is in the time domain. And/or polling in the frequency domain.
- the interference characteristic parameter includes a transmission mode of the analog load template, a resource utilization rate, a rank RANK, a precoding matrix indication PMI, and a modulation and coding scheme MCS, a time domain or a frequency domain polling granularity;
- the parameter configuration module 301 is configured to separately configure a transmission mode, a resource utilization rate, a RANK, a PMI, an MCS, a time domain, or a frequency domain polling granularity of the simulated load template.
- An embodiment of the present invention provides a device for generating analog interference, which can be applied to a multiple input multiple output MIMO transmission mode for obtaining analog interference consistent with a real user equipment interference characteristic; it can be understood that the device can also It is applied to single-input single-output (SISO, SISO Single Input Single Out), single-input multiple-output (SIMO, SIMO Single Input Multiple Out), and MISO Multiple Input Single Out (MISO Multiple Input Single Out), which are not specifically limited herein.
- SISO single-input single-output
- SIMO single-input multiple-output
- MISO Multiple Input Single Out MISO Multiple Input Single Out
- the device for generating analog interference provided by the embodiment of the present invention is implemented by the process of interference characteristic parameter configuration and analog interference generation, and each interference source is separately configured, so that interference characteristics with real user equipment can be obtained. Consistent analog interference, which more objectively reflects system performance in different scenarios, saves test input and cost, and improves test efficiency.
- the parameter configuration module 301 is specifically configured to configure a transmission mode of the simulated load template, configure resource utilization of the simulated load template, and configure RANK and PMI of the simulated load template.
- the configuring the transmission mode of the simulated load template includes: configuring a transmission mode or a transmission scheme of the simulated load template, and accepting or not accepting the constraint of the characteristic license of the interfering cell; the configured transmission mode only affects the physical downlink shared channel PDSCH Data transmission, but does not affect the transmission of the CRS pilot of the cell-specific reference signal, nor does it affect the values of the pilot transmit power, Pa and Pb, etc., so that the analog load and the cell interference coordination ICIC can coexist; wherein the interference
- the characteristics of the cell may include MIMO/BF, and may also include active antenna system AAS, frequency selective scheduling, ICIC, power level and other characteristics.
- the configuring the resource utilization of the simulated load template includes: configuring the resource block RB utilization rate and the transmit power utilization of the interfering cell to control the RB utilization rate or the transmit power of the real user equipment UE scheduled by the interfering cell
- the simulated load scheduling is performed.
- the simulated load does not take effect;
- the configuring the RANK and the PMI of the simulated load template includes: configuring, according to the configured transmission mode, a RANK and a PMI corresponding to the specific value or a preset value range respectively; wherein the specific value range is Refer to Table 1 in the above embodiment;
- the configuring the MCS of the simulated load template includes: configuring the MCS of the simulated load template to be a specific value or a preset value range, that is, a subset of 0 to 28;
- the configuring the time domain or the frequency domain polling granularity includes: if multiple simulated load templates are set, respectively configuring the time domain polling granularity or the frequency domain polling granularity of the simulated load template as a specific value or preset
- the value range of the time domain polling granularity ranges from 1 ms to infinity, and the preset frequency range of the frequency domain polling granularity ranges from 1 to 100 RBs.
- the simulated interference generating module 302 is specifically configured to: generate, according to different transmission modes, RANK and/or PMI and/or MCS configured according to a medium access control layer MAC or a radio resource control RRC protocol layer. Analog interference; In the case where multiple analog load templates are set, polling is also performed between multiple analog load templates according to the configured time domain or frequency selective polling granularity.
- the form of the analog interference may be:
- the PMI is labeled as NA, NA indicates that no configuration or configuration does not take effect.
- the RRC protocol layer (L3) is configured and how to configure the PMI
- the physical layer (L1 for short) and the medium access control MAC layer (L2 for short) are generated according to the protocol 36.211.
- the precoding matrix and the physical downlink shared channel PDSCH signal wherein it can be understood that L1, L2, and L3 belong to the architectural content of the eNodeB, and are not specifically explained herein.
- the PMI is marked as N.A, which means that the PMI is configured regardless of L3, and L2 and L1 generate the beamforming matrix and the PDSCH signal according to the beamforming technique.
- the PMI may or may not be configured. If the PMI is configured, the precoding matrix and the PDSCH signal are generated according to the codebook defined by 36.211 and 36.213. If the PMI is not configured, the PMI is used according to the application. Beamforming techniques to generate beamforming matrices and PDSCH signals.
- the analog interference generating module 302 is configured to generate an analog interference process, which may be specifically:
- the RANK of the simulated load template is configured to accept or not accept
- License control for MIMO and BF does not accept codebook subset functionality restrictions.
- Set 1T 4T to indicate the number of antenna ports of the eNodeB.
- the PMI of the L3 input is meaningless (that is, the PMI is not configured or the configuration is not valid), and L2 generates the precoding matrix according to the protocol 36.211.
- 2T closed-loop TM4 or TM5 or TM6 mode L2 scheduled PMI performs upper and lower limit processing according to the PMI input by RANK and L3, ensuring that the PMI of RANK1 is 0 ⁇ 3, the PMI of RANK2 is 1 ⁇ 2, and the RANK1 and RANK2 represent space.
- the number of independent data streams are possible.
- L2 performs analog scrambling according to transmission mode TM1 and the set MCS; for 2 ⁇ or 4 ⁇ , if the transmission mode is ⁇ 1, analog scrambling is performed according to ⁇ 2 and the set MCS; for ⁇ 7, L3 input is not Meaning, L2 and L1 generate beamforming matrices based on the beamforming technique used. For ⁇ 8 or ⁇ 9, if L3 is configured with ⁇ , the precoding matrix is generated according to the code defined by 36.211 and 36.213; if ⁇ is not configured, the beamforming matrix is generated according to the beamforming technique.
- the device may further include a parameter copy module, where the parameter copy module is used
- the interference characteristic parameter configuration of the simulated load template is copied to one or more analog user equipments, and the simulated load is loaded into the interference cell by the analog user equipment to achieve a preset simulated load resource utilization rate.
- RB resource allocation for each simulated load user is performed according to a certain resource allocation manner (three resource allocation modes 0, 1, 2 are defined in LTE protocol 36.213), so that an analog user equipment may be found.
- the RB of the address cannot reach the set analog load level.
- the parameter copying module may be further configured to copy the interference characteristic parameter configuration of the simulated load template to one or more simulated user equipments by using the interfering cell to enable the ICIC function, and pass the simulation The user equipment loads the analog load into the center band and the edge band to achieve a preset analog load resource utilization.
- the central user and the edge user of the interfering cell have different power control parameters (Pa and Pb) configurations.
- Pa and Pb power control parameters
- the parameter configuration of each simulated load template configured is still copied to one or more analog user devices (for example, up to 16 user devices), and scrambling through the analog user devices is implemented in the center band and the edge band respectively.
- the set simulated load resource utilization is reached.
- the analog interference generating module 302 is further configured to: if the RRC protocol layer only configures part of the interference characteristic parameter in the interference characteristic parameter, according to the default value of the unconfigured interference characteristic parameter Or the default mode is used for performing the analog scrambling; if the RRC protocol layer only configures some of the interference characteristic parameters and is a preset value range, the random selection is performed within the preset value range. Or poll the selected way to perform analog scrambling. For example, if RANK is not configured, the scrambling can be simulated according to the default RANK1. If the MCS is not configured, the scrambling can be simulated according to the default MCS, or the MCS can be randomly selected to simulate scrambling, or the MCS can be used in some A range of polling methods to simulate scrambling.
- the embodiment of the present invention can use pseudorandom noise or a specific source signal, and combine the transmission mode of the L3 configuration, the interference characteristic parameters such as RANK, PMI, and MCS, and refer to the protocol 36.211.
- the PDSCH signal is generated through the downlink physical channel processing flow and mapped to the eNodeB antenna for transmission.
- the device for generating analog interference may be an eNodeB, that is, generating analog interference according to the configured interference characteristic parameter on the eNodeB side; or using a separate device (such as a signal generator) to generate analog interference.
- the device for generating analog interference is implemented by the process of interference characteristic parameter configuration and analog interference generation, and each interference source is separately configured, and the interference characteristic parameter of the interference source is configured (including The number of interferers, the transmission mode of each interferer, PMI, RANK, MCS, transmit power, time domain or frequency domain polling granularity, etc.).
- analog interference data is generated according to the set interference characteristic parameters and transmitted in the air interface. It can obtain analog interference consistent with the interference characteristics of real user equipment, thereby more objectively reflecting system performance in different scenarios, saving test input and cost, and improving test efficiency.
- the interference effect generated by the analog interference is equivalent to the interference effect of the real UE, so that the performance of the specific technology (such as MIMO, AAS) in the multi-cell scenario is better evaluated/demonstrated.
- the specific technology such as MIMO, AAS
- it has certain flexibility, while saving material and labor costs.
- FIG. 4 is another schematic structural diagram of an apparatus for generating analog interference according to an embodiment of the present invention, where the apparatus for generating analog interference includes: an input apparatus 401, an output apparatus 402, and a processor 403, where The processor 403 performs the following steps:
- One or more simulated load templates respectively performing interference characteristic parameter configuration on the simulated load template, and one simulated load template is used to simulate one or a type of interference having the same interference characteristics; using the configured on the simulated load template
- the interference characteristic parameter generates analog interference. If multiple analog load templates are set, the interference generated by the plurality of analog load template simulations is polled in the time domain and/or the frequency domain.
- the interference characteristic parameter includes a transmission mode of the analog load template, resource utilization, rank RANK, precoding matrix indication PMI, modulation and coding scheme MCS, time domain or frequency domain polling granularity
- the processor 403 performs interference characteristic parameter configuration on the simulated load template, including: configuring, respectively, a transmission mode, a resource utilization, a RANK, a PMI, an MCS, a time domain, or a frequency domain polling granularity of the simulated load template;
- the processor 403 is configured to: configure a transmission mode of the simulated load template, including: configuring a transmission mode or a transmission scheme of the simulated load template, and accepting or not accepting a constraint of the characteristic license of the interfering cell;
- the resource utilization is configured to: configure resource block RB utilization and transmit power utilization of the interfering cell to control the RB utilization or the transmit power utilization of the real user equipment UE scheduled by the interfering cell is lower than the preset When the threshold is used, the simulated load scheduling is performed.
- configuring the RANK and PMI of the simulated load template includes: The configured transmission mode, the configuration of the corresponding RANK and the PMI are respectively a specific value or a preset value range; configuring the MCS of the simulated load template includes: configuring the MCS of the simulated load template as a specific value or pre- Set the value range; configure the time domain or frequency domain polling granularity
- the method includes: if multiple simulated load templates are set, respectively configuring a time domain polling granularity or a frequency domain polling granularity of the simulated load template, which is a specific value or a preset value range; The value ranges from 1 ms to infinity, and the preset range of the frequency domain polling granularity ranges from 1 to 100 RBs.
- the processor 403 is configured to: generate the analog interference by using the interference characteristic parameter configured on the simulated load template, and: control the RRC protocol layer according to the medium access control layer MAC or the radio resource based on different transmission modes.
- the configured RANK and/or PMI and/or MCS generate analog interference and poll between multiple analog load templates based on the configured time domain or frequency selective polling granularity.
- the processor 403 is further configured to: copy the interference characteristic parameter configuration of the analog load template to one or more analog user equipment, and load the simulated load to the interference cell by using the simulated user equipment, to achieve Preset simulated load resource utilization.
- the processor 403 is further configured to: copy the interference characteristic parameter configuration of the simulated load template to one or more simulated user equipments, and pass the simulated user, in a manner that the ICIC function is enabled based on the interfering cell.
- the device loads the analog load into the center and edge bands to achieve the simulated analog load resource utilization of the preset.
- the processor 403 is further configured to:
- the RRC protocol layer only configures some of the interference characteristic parameters of the interference characteristic parameter, performing analog power interference on the unconfigured interference characteristic parameter according to a default value or a default manner;
- the simulation is performed according to a random selection or a polling selection within the preset value range. Disturb.
- the device for generating analog interference is implemented by the process of interference characteristic parameter configuration and analog interference generation, and each interference source is separately configured, and the interference characteristic parameter of the interference source is configured (including The number of interferers, the transmission mode of each interferer, PMI, RANK, MCS, transmit power, time domain or frequency domain polling granularity, etc.).
- analog interference data is generated according to the set interference characteristic parameters and transmitted in the air interface. It can obtain analog interference consistent with the interference characteristics of real user equipment, thereby more objectively reflecting system performance in different scenarios, saving test input and cost, and improving test efficiency.
- the interference effect generated by the analog interference is equivalent to the interference effect of the real UE, so that the performance of the specific technology (such as MIMO, AAS) in the multi-cell scenario is better evaluated/demonstrated.
- the specific technology such as MIMO, AAS
- it has certain flexibility, while saving material and labor costs.
- the apparatus for generating analog interference includes:
- a parameter configuration module configured to configure an interference characteristic parameter, where the interference characteristic parameter is used to simulate one or a type of interference having the same interference characteristic, where the interference characteristic parameter includes a transmission mode, a rank RANK, and a precoding matrix indicating PMI;
- An analog interference generating module is configured to generate analog interference by using the interference characteristic parameter.
- the parameter configuration module is specifically configured to configure the transmission mode, the rank RANK, and the PMI.
- the parameter configuration module configures the transmission mode as follows: configuring a transmission mode or a transmission scheme, and accepting or not accepting the constraint of the characteristic license of the interfering cell;
- the parameter configuration module configures the RANK and the PMI as follows: According to the configured transmission mode, the RANK and the PMI corresponding to the configuration are respectively a specific value or a preset value range.
- the interference characteristic parameter may include a transmission mode and a rank.
- the parameter configuration module configures resource utilization as follows: Configuring resource block RB utilization and transmission power utilization of the interfering cell Rate, to control the RB utilization rate and the transmit power of the real UE scheduled by the interfering cell when the RB utilization rate or the transmit power utilization rate of the real user equipment UE scheduled by the interfering cell is lower than the preset threshold When the utilization rate is higher than the preset threshold, the simulated load does not take effect;
- the parameter configuration module configures the MCS as follows: Configure the MCS to be a specific value or a preset value range.
- the interference characteristic parameter may include other parameters in addition to the transmission mode, the rank RANK, and the PMI.
- the interference characteristic parameter may further include: The domain and/or the frequency domain polling granularity is configured.
- the parameter configuration module configures the time domain and/or the frequency domain polling granularity as follows: separately configuring the time domain polling granularity of each set of interference characteristic parameters and/or The frequency domain polling granularity is a specific value or a preset value range.
- the preset range of the time domain polling granularity ranges from 1 ms to infinity, and the preset range of the frequency domain polling granularity ranges from 1 to 100 RB. .
- the analog interference generating module in this embodiment is specifically configured to: generate analog interference according to different transmission modes, according to RANK and/or PMI configured by the RRC layer.
- the analog interference generating module in this embodiment is specifically configured to: generate analog interference according to the RANK and/or PMI configured by the RRC layer based on different transmission modes, and according to the configured time domain and / or frequency selection polling granularity, polling between multiple sets of interference characteristic parameters, so that the analog interference generated by multiple sets of interference characteristic parameters is polled in the time domain and / or frequency domain.
- the apparatus for generating analog interference may further include: a parameter copying module, configured to copy the interference characteristic parameter to one or more simulated user equipment, and by simulating the user equipment The simulated load is loaded into the interfering cell to achieve a preset analog load resource utilization rate;
- the interference characteristic parameter is copied to one or more analog user equipments according to the manner in which the interfering cell turns on the ICIC function, and the simulated load is loaded into the central frequency band and the edge frequency band by the simulated user equipment to achieve the preset simulated simulated load resource. Utilization rate.
- the disclosed systems, devices, and methods may be implemented in other modes.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division mode for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
- the mutual coupling or direct connection or communication connection shown or discussed may be an indirect engagement or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.
- the components displayed by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
- the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. , including a number of instructions to make a computer device (which can be a personal computer, a server, Or a network device or the like) performing all or part of the steps of the method of the various embodiments of the present invention.
- the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .
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