CN102355689B - Terminal interference test realizing method and device - Google Patents
Terminal interference test realizing method and device Download PDFInfo
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Abstract
The invention relates to the field of communication and discloses a terminal interference test realizing method and a device used for reducing the test complexity and the cost investment of a mobile communication system. The method comprises the following steps: loading at least one virtual interference terminal according to preset analog loading related parameters, and distributing a corresponding time frequency resource for the at least one interference terminal; and sending a signal to the at least one interference terminal on the time frequency resource so as to carry out interference test on other actual tested terminals. So, time frequency resources in a system can be respectively loaded, resource occupation modes, sending power and other parameters can be flexibly set, interference of a certain part of time frequency resources on the tested terminals in the fixed direction is easy to realize, and a multi-beam interference scene is easy to construct, so the execution complexity and the cost investment of an interference test process is effectively reduced.
Description
Technical field
The present invention relates to the communications field, particularly a kind of implementation method of terminal interference test and device.
Background technology
In the coverage test and volume test of mobile communication system,, in order to verify the performance of communication equipment in live network, usually need to introduce certain interference in test, namely when for equipment under test, testing, need to quote the interfered with terminal of some.At present, in actual applications, usually can use real communication equipment to test as interfered with terminal, like this, just need to use a large amount of real communication equipments in test.
Under prior art, in the process of carrying out coverage test and volume test, both needed to consider the impact on test result of identical networking and inter-frequency networking, need again to consider that adjacent cell and this residential quarter are at the result difference that has under the no user condition, therefore, if adopt real communication equipment to test as interfered with terminal, the execution complexity and the cost that greatly increase test are dropped into.
Summary of the invention
The embodiment of the present invention provides a kind of implementation method and device of terminal interference test, in order to testing complex degree and the cost that reduces mobile communication system, drops into.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of implementation method of terminal interference test comprises:
Obtain default simulation loading relevant parameter;
Load at least one virtual interfered with terminal according to described simulation loading relevant parameter, and according to described simulation loading relevant parameter, be that this at least one interfered with terminal is distributed corresponding running time-frequency resource;
On described running time-frequency resource to described at least one interfered with terminal transmitted signal, so that other real measured terminals are carried out disturbed test;
wherein, when the simulation loading relevant parameter according to default distributes corresponding running time-frequency resource for any one interfered with terminal, take subframe as the described corresponding running time-frequency resource of any one interfered with terminal distribution of stating as unit, in any one descending sub frame, for described any one interfered with terminal is distributed running time-frequency resource, comprise: the original position of determining current time-frequency resource allocating, be the running time-frequency resource number that interfered with terminal is reserved according to default loading ratio-dependent, from described original position, be that described any one interfered with terminal is distributed corresponding running time-frequency resource in the running time-frequency resource of described reservation, wherein, distribute for described any one interfered with terminal in the process of running time-frequency resource,, if know that the running time-frequency resource of distribution is taken by other-end, abandon the running time-frequency resource of current distribution, and in the running time-frequency resource of described reservation other running time-frequency resources of otherwise allocated.
A kind of implement device of terminal interference test comprises:
Parameter configuration module, be used for obtaining default simulation loading relevant parameter;
Scheduler module, load at least one virtual interfered with terminal according to described simulation loading relevant parameter, and according to described simulation loading relevant parameter, be that this at least one interfered with terminal is distributed corresponding running time-frequency resource;
Sending module, be used on described running time-frequency resource to described at least one interfered with terminal transmitted signal, so that other real measured terminals are carried out disturbed test;
wherein, when described scheduler module is distributed corresponding running time-frequency resource at the simulation loading relevant parameter according to default for any one interfered with terminal, take subframe as the described corresponding running time-frequency resource of any one interfered with terminal distribution of stating as unit, wherein, described scheduler module is in any one descending sub frame, while for described any one interfered with terminal, distributing running time-frequency resource, comprise: the original position of determining current time-frequency resource allocating, be the running time-frequency resource number that interfered with terminal is reserved according to default loading ratio-dependent, from described original position, be that described any one interfered with terminal is distributed corresponding running time-frequency resource in the running time-frequency resource of described reservation, wherein, described scheduler module is that described any one interfered with terminal is distributed in the process of running time-frequency resource, if know that the running time-frequency resource of distribution is taken by other-end, abandon the running time-frequency resource of current distribution, and in the running time-frequency resource of described reservation other running time-frequency resources of otherwise allocated.
A kind of base station, comprise the implement device of above-mentioned terminal interference test.
In the embodiment of the present invention, testing apparatus, according to default simulation loading relevant parameter, uses virtual interfered with terminal to produce and disturb real measured terminal, thereby has completed the disturbed test to real measured terminal.With respect to using real interfered with terminal to carry out disturbed test, the execution complexity and the cost that adopt virtual interfered with terminal can effectively reduce the disturbed test flow process drop into.
Description of drawings
Fig. 1 is testing apparatus illustrative view of functional configuration in the embodiment of the present invention;
Fig. 2 is disturbed test flow chart in the embodiment of the present invention;
Fig. 3 is the first time-frequency resource allocating flow chart in the embodiment of the present invention;
Fig. 4 is the second time-frequency resource allocating flow chart in the embodiment of the present invention;
Fig. 5 is wave beam forming schematic diagram in the embodiment of the present invention;
Fig. 6 is wave beam forming flow chart in the embodiment of the present invention.
Embodiment
For testing complex degree and the cost that reduces mobile communication system drops into, in the present embodiment, no longer adopt real interfered with terminal to test, but by configuration simulation loading relevant parameter, at least one virtual interfered with terminal is set completes test, wherein, measured terminal still adopts real communication equipment.
Wherein, so-called simulation loading relevant parameter can be including but not limited to following several parameters, for example: the running time-frequency resource of the virtual required loading of interfered with terminal (as, the PDCCH resource is or/and the PDSCH resource), the loading ratio of running time-frequency resource, whether the loading original position of running time-frequency resource is random, the MIMO(multiple-input and multiple-output that adopts when running time-frequency resource (being mainly for the PDSCH resource) loads) mode, figuration angle number, figuration angle period of change etc., the concrete application of all kinds of parameters will be made further introduction in subsequent embodiment.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Consult shown in Figure 1ly, in the embodiment of the present invention, include parameter configuration module 10, scheduler module 11 and sending module 12 in testing apparatus, wherein
Parameter configuration module 10, be used for configuration simulation loading relevant parameter in real time;
Scheduler module 11, be used for the simulation loading relevant parameter according to configuration, and scheduling loads at least one interfered with terminal and distributes corresponding running time-frequency resource; Can be interpreted as that namely simulation realizes that co-channel interference or alien frequencies disturb the impact on measured terminal;
Sending module 12, be used on the running time-frequency resource of above-mentioned distribution at least one interfered with terminal transmitted signal, so that other real measured terminals are carried out disturbed test.As,, according to the simulation loading relevant parameter of configuration, send the wave beam forming data of above-mentioned at least one interfered with terminal, be used for simulating the interference scene that realizes multi-user under the outdoor intelligent antenna environment.
In practical application, above-mentioned testing apparatus can be independently to install, and can be also the some functional modules in base station, can also be base station itself.
Based on technique scheme, better, testing apparatus should first be dispatched real measured terminal, and is that it distributes corresponding running time-frequency resource, and then loads at least one virtual interfered with terminal and carry out disturbed test, in the present embodiment, suppose that the modulated degree measured terminal of testing apparatus is complete, so, consult shown in Figure 2, take testing apparatus be base station as example, the idiographic flow of introducing disturbed test is as follows:
Step 200: base station obtains default simulation loading relevant parameter.
Step 210: base station loads at least one virtual interfered with terminal according to the simulation loading relevant parameter that obtains, and according to this simulation loading relevant parameter, is that this at least one interfered with terminal is distributed corresponding running time-frequency resource.
In the present embodiment, when the simulation loading relevant parameter according to default is the corresponding running time-frequency resource of this at least one interfered with terminal distribution, can be that above-mentioned at least one interfered with terminal is distributed corresponding running time-frequency resource in the same residential quarter of measured terminal, to realize the co-channel interference test to measured terminal, perhaps, be that above-mentioned at least one interfered with terminal is distributed corresponding running time-frequency resource in the neighbor cell of measured terminal, to realize same frequency or the alien frequencies disturbed test to measured terminal,, because neighbor cell can be co-frequency cell, may be also alien-frequency district.
For example, while testing at the scene, base station can be the mode that interfered with terminal is distributed running time-frequency resource by the same frequency at measured terminal or alien frequencies neighbor cell, under test is disturbed with frequency or alien frequencies, the performances such as antijamming capability of the coverage of residential quarter, measured terminal place, throughput, measured terminal, perhaps, base station can be by in residential quarter, measured terminal place being the mode that interfered with terminal loads running time-frequency resource, the performance impact that the test co-channel interference causes measured terminal.
Step 220: base station on the running time-frequency resource that distributes to above-mentioned at least one interfered with terminal transmitted signal, so that other real measured terminals are carried out disturbed test.
In the step 210 of above-described embodiment, when base station is distributed corresponding running time-frequency resource at the simulation loading relevant parameter according to default for any one interfered with terminal, take subframe as the corresponding running time-frequency resource of above-mentioned any one interfered with terminal distribution as unit, wherein, in any one descending sub frame, the method for salary distribution of running time-frequency resource is as follows:
Steps A: the original position of current time-frequency resource allocating is determined in base station.
Step B: the running time-frequency resource number that base station is reserved for any one interfered with terminal according to default loading ratio-dependent.
In actual applications, the number of the running time-frequency resource that can distribute in each residential quarter is limited, in order farthest to meet the user demand of real measured terminal, usually the running time-frequency resource number that needs the limit interferences terminal to use, therefore, a loading ratio can be set, the running time-frequency resource number that can distribute in this loading ratio and residential quarter is multiplied each other, namely can be known as the running time-frequency resource number that interfered with terminal is reserved.
Step C: base station from described original position, is that above-mentioned any one interfered with terminal is distributed corresponding running time-frequency resource in the running time-frequency resource of above-mentioned reservation.
in the present embodiment, because base station has also been dispatched real measured terminal simultaneously, therefore, base station is when distributing running time-frequency resource, better, should adopt real user priority allocation principle, be that base station is when distributing running time-frequency resource for any one interfered with terminal, if know that the running time-frequency resource of distribution is taken by measured terminal, should abandon the running time-frequency resource of current distribution, and in the running time-frequency resource of reserving for interfered with terminal other running time-frequency resource of otherwise allocated, further, if there are a plurality of virtual interfered with terminal in system, base station is when distributing running time-frequency resource for any one interfered with terminal, if know that the running time-frequency resource of distribution is taken by other interfered with terminal, also should abandon the running time-frequency resource of current distribution, and in the running time-frequency resource of reserving for interfered with terminal other running time-frequency resource of otherwise allocated.
Current, the method of salary distribution of above-mentioned running time-frequency resource be the running time-frequency resource abundance reserved be prerequisite, if the running time-frequency resource of reserving is inadequate, namely can not meet the user demand of interfered with terminal, after the whole distribution of running time-frequency resource that base station will be reserved, also other running time-frequency resource of otherwise allocated more not, this is in order to guarantee the systematic function of measured terminal, not repeat them here.
In the present embodiment, the running time-frequency resource of base station assigns can be PDCCH(Physical Downlink Control Channel, Physical Downlink Control Channel) resource is or/and PDSCH(Physical Downlink Shared Channel, Physical Downlink Shared Channel) resource, two kinds of running time-frequency resources be independent allocation separately.Below the method for salary distribution of above-mentioned two kinds of running time-frequency resources is made respectively introduction.
Consult shown in Figure 3ly, in the present embodiment, base station distributes the detailed process of PDCCH resource as follows for any one interfered with terminal in any one descending sub frame:
Step 300: the PDCCH resource that the real measured terminal of base station scheduling takies, and the PDCCH resource of measured terminal distributed in record.
In the present embodiment, for the loading of PDCCH resource, loading ratio unit is CCE(Control Channel Elements, the control channel element), namely CCE is the base unit that the PDCCH resource loads.
Does step 310: base station judge that the simulation loading function opens? if carry out step 320; Otherwise, carry out step 380.
Does step 320: base station judge whether to arrive the periodic point of the random PDCCH original position of conversion? if carry out step 330; Otherwise, carry out step 340.
In the present embodiment, the loading original position of PDCCH resource namely is called the PDCCH original position, and is better, and the PDCCH original position is random the generation, and need to regularly upgrade.
Step 330: base station obtains a random value as the PDCCH original position in available PDCCH scope by random function.Then, carry out step 350.
Step 340: base station uses the last random value of acquisition that calculates as the PDCCH original position.
In practical application, if do not have the last random value that calculates (as, current for calculating first), adopt the default value of presetting as the PDCCH original position.Then, carry out step 350.
Step 350: base station, according to default loading ratio, is determined need to start the PDCCH number of resources that loads continuously, i.e. CCE number from the PDCCH original position of above-mentioned acquisition.
Step 360: base station obtains the PDCCH resource that in this descending sub frame, measured terminal takies, and adjusts interfered with terminal and does not take these PDCCH resources.
in practical application, better, the PDCCH resource of measured terminal should be paid the utmost attention in base station, and the CCE(CCE that distributes for it respective number is the most basic allocation unit of PDCCH resource), then, when loading interfered with terminal, again according to the loading ratio that configures in real time, current CFI(Control Format Indicator, the control channel form is indicated) and the current PDCCH number of resources of keeping for interfered with terminal of system bandwidth calculating, it is the CCE number, wherein, CFI and system bandwidth are used for to the sum of the control channel resource of base station indication current system, CFI and loading ratio all can be adjusted in real time according to the current network environment, send in real time scheduler module 11 to by the parameter configuration module 10 in base station.Therefore, after base station starts to have distributed the CCE of respective number for any interfered with terminal from the PDCCH original position of confirming, should judge in these CCE and whether have the CCE that by measured terminal, has been taken, if, dodge out these CCE, and from distributing end position to start to continue to distribute the CCE of respective number, until distribute the CCE that finishes or for interfered with terminal, reserve to use, like this, can guarantee that the PDCCH resource that real measured terminal is assigned to can not dispatch out because of the existence of interfered with terminal.Certainly, for the situation that the CCE that distributes for any interfered with terminal has been taken by another interfered with terminal, above-mentioned processing mode is applicable too, does not repeat them here.
Step 370: base station is completed the PDCCH resource of interfered with terminal in this descending sub frame and is distributed.
Be specially: base station is according to current descending sub frame dispatching requirement, for measured terminal distributes corresponding PDCCH; Wherein, the running time-frequency resource ratio that takies according to interfered with terminal, a plurality of PDCCH can be distributed for interfered with terminal in base station, each PDCCH can take a plurality of CCE, for wall scroll PDCCH, its CCE that takies is continuous, and the number of the CCE that wall scroll PDCCH takies can be 1,2,4,8, specifically by relevant criterion, is arranged.
Step 380: base station is confirmed need not to distribute the PDCCH resource for measured terminal in this descending sub frame.
Consult shown in Figure 4ly, in the present embodiment, base station distributes the detailed process of PDSCH resource as follows for any one interfered with terminal in a subframe:
Step 400: the PDSCH resource that the real measured terminal of base station scheduling takies, and the PDSCH resource of measured terminal distributed in record.
In the present embodiment, for the loading of PDSCH resource, loading ratio unit is PRB(Physical Resource Block, frequency resource block), namely PRB is the base unit that the PDSCH resource loads.
Does step 410: base station judge that the simulation loading function opens? if carry out step 420; Otherwise, carry out step 480.
Is step 420: what base station judged whether to carry out the random loading pattern? if carry out step 440; Otherwise, carry out step 430.
In the present embodiment, the loading original position of PDSCH resource namely is called the PDSCH original position, and so-called random loading pattern refers to that namely the PDSCH original position is random the generation, and need to regularly upgrade.
Step 430: default PDSCH original position is confirmed in base station.Then, execution step 450.
In the present embodiment, default this parameter of PDSCH original position is only effective when random loading pattern not enabled.
Step 440: when put in the arrival update cycle base station, obtain a random value by random function as the PDSCH original position in available PDSCH scope.Then, carry out step 450.
Step 450: base station, according to default loading ratio, is determined need to start the PDSCH number of resources that loads continuously, i.e. PRB number from the PDSCH original position of above-mentioned acquisition.
Step 460: base station obtains the PDSCH resource that in this descending sub frame, measured terminal takies, and adjusts interfered with terminal and does not take these PDSCH resources.
in practical application, better, the PDSCH resource of measured terminal should be paid the utmost attention in base station, and the PRB(PRB that distributes for it respective number is the most basic allocation unit of PDSCH resource), then, when loading interfered with terminal, calculate the current PDSCH number of resources of keeping for interfered with terminal according to loading ratio and the current system bandwidth of configuration in real time again, it is the PRB number, wherein, system bandwidth is used for to the sum of the PDSCH resource of base station indication current system, the loading ratio can be adjusted in real time according to the current network environment, send in real time scheduler module 11 to by the parameter configuration module 10 in base station.Therefore, after base station starts to have distributed the PRB of respective number for any interfered with terminal from the PDSCH original position of confirming, should judge in these PRB and whether have the PRB that by measured terminal, has been taken, if, dodge out these PRB, and from distributing end position to start to continue to distribute the PRB of respective number, until distribute the PRB that finishes or for interfered with terminal, reserve to use, like this, can guarantee that the PDSCH resource that real measured terminal is assigned to can not dispatch out because of the existence of interfered with terminal.Certainly, for the situation that the PRB that distributes for any interfered with terminal has been taken by another interfered with terminal, above-mentioned processing mode is applicable too, does not repeat them here.
Step 470: base station is completed the PDSCH resource of interfered with terminal in this descending sub frame and is distributed.
Step 480: base station is confirmed in this descending sub frame need not to distribute the PDSCH resource into measured terminal.
Based on above-mentioned time-frequency resource allocating mode, in the present embodiment,
In the present embodiment, base station is adopted MIMO(multi-user's input and output usually) mode carries out simulation loading to interfered with terminal, when base station on the PDSCH resource of distributing during to the interfered with terminal transmitted signal, acquiescence adopts SFBC(space frequency block coding in the self adaptation situation, Space Frequency Block Coding) mode is carried out the signal transmission, and the omnidirectional that namely by prevention at radio-frequency port, according to the sector angle of coverage, carries out signal sends; In addition, the port5 wave beam forming mode send mode under TM7 is also supported in base station.Consult shown in Figure 5, under port5 wave beam forming mode, the time-frequency domain resources of measured terminal and interfered with terminal can be on single or a plurality of wave beams directive sending.By the flexible change of figuration angle number, figuration angle period of change, the interference randomization that can make the interfered with terminal of simulation loading cause measured terminal, at this moment, sending module 12 need to be safeguarded figuration angle and corresponding forming coefficient.So, in the step 220 of above-described embodiment, base station in any one descending sub frame, during to any one interfered with terminal transmitted signal, specifically comprises on the PDSCH resource of distributing:
Step X: base station is determined in above-mentioned any one descending sub frame according to default simulation loading relevant parameter, at least one figuration angle of using during to above-mentioned any one interfered with terminal transmitted signal and corresponding forming coefficient.
Step x1: the simulation loading relevant parameter that the base station basis is preset is confirmed N the figuration direction of setting, then, then the forming coefficient of the figuration angle preset of each figuration direction formation of confirmation correspondence respectively; Wherein, suppose that corresponding each figuration angle is respectively arranged with a forming coefficient, better, forming coefficient corresponding to each figuration angle carried out record with the form of array.
For example, the antenna vector battle array of current use is determined in base station according to the simulation loading relevant parameter, calculates and preserve 0 forming coefficient corresponding to angle to 180 angle with the array form respectively, is designated as steervector[181]; Then, base station is according to the number N of default figuration direction, calculate respectively the corresponding forming coefficient of figuration angle that each figuration direction N forms, as, suppose the figuration angle that n figuration direction forms is designated as bf_angle[n], 1≤n≤N, the index value of the forming coefficient that it is corresponding is designated as bf_angle_index, in view of present sector, be covered as 120 ° (also can be other angles, 120 ° only for giving an example), the figuration angle of above-mentioned N figuration direction formation can represent respectively
bf_angle[0]=（180-120）/2+120/(N+1)；
bf_angle[1]=bf_angle[0]+120/(N+1)；
bf_angle[2]=bf_angle[1]+120/(N+1)；
bf_angle[3]=bf_angle[2]+120/(N+1)；
……
bf_angle[n]=bf_angle[n-1]+120/(N+1)；
……
bf_angle[N]=bf_angle[N-1]+120/(N+1)；
Then, according to any one the figuration angle bf_angle[n that calculates], at steervector[181] search corresponding forming coefficient in array, and to its power normalized, be designated as bf_coeff[n], bf_coeff[n] be namely figuration angle bf_angle[n] corresponding forming coefficient, its array index is namely figuration angle bf_coeff[n] index value bf_angle_index.
By that analogy, adopt this method can obtain each self-corresponding forming coefficient of figuration angle that N figuration direction forms, repeat no more.
Step x2, base station is in forming coefficient corresponding to the figuration angle of above-mentioned N each self-forming of figuration direction, according to the MIMO mode of above-mentioned any one interfered with terminal, at least one figuration angle from the inherent PDSCH resource of distributing of any one descending sub frame to above-mentioned any one interfered with terminal transmitted signal and the corresponding forming coefficient used while confirming on.
In practical application, although be provided with N figuration direction, but each time during transmitted signal, can only use wherein any one or a plurality of figuration direction to carry out the wave beam forming operation, for example, consult shown in Figure 5, suppose N figuration direction corresponding wave beam 1, wave beam 2, wave beam 3 respectively ... wave beam N, and in current descending sub frame, base station only uses wave beam 1 to carry out the operation of simple beam figuration, perhaps, use wave beam 1, wave beam 2, wave beam N to carry out multi-beam figuration operation etc.
Step Y: base station is in above-mentioned any one descending sub frame, on the PDSCH resource of for above-mentioned any one interfered with terminal, distributing, based at least one figuration angle of confirming and corresponding forming coefficient, signal to be sent is mail to described any one interfered with terminal.
Be specially: base station will be divided into for the PDSCH resource that above-mentioned any one interfered with terminal is distributed the M group, 1≤M≤N, the method of salary distribution is determined by simulation loading relevant parameter before, can also can be Random assignment for mean allocation, the corresponding figuration angle of each group PDSCH resource, and organize on PDSCH resource at each respectively, figuration angle and corresponding forming coefficient based on correspondence, mail to described any one interfered with terminal with signal to be sent.
For example, during M=1, only there is a figuration angle this moment, base station will be divided into 1 group for the PDSCH resource that above-mentioned any one interfered with terminal is distributed, the corresponding figuration angle of this 1 group of PDSCH resource, and with on this 1 group of PDSCH resource based on the figuration angle of correspondence and corresponding forming coefficient, signal to be sent is mail to described any one interfered with terminal.
This wave beam forming mode, be called simple beam figuration mode, consults shown in Figure 5ly, and in such cases, the PRB that the above-mentioned any interfered with terminal that loads in same subframe takies sends on same wave beam.In different subframes, the beam direction that the PRB that interfered with terminal is assigned to takies can be different, specifically can be according to N figuration direction of configuration, in different subframes, periodically change by 1 to N according to period of change, concrete variation pattern can be notified scheduler module 11 in real time by parameter configuration module 10.
As, the figuration angle of supposing the current wave beam that takies of PRB is bf_angle[n], its corresponding forming coefficient is bf_coeff[n], base station configures with it all PRB that take to above-mentioned any one interfered with terminal; When the time arrived the boundary point of period of change, base station added 1 mould N with the index value bf_angle_index of forming coefficient, thereby is updated to new forming coefficient bf_coeff[n+1], the new figuration angle of its correspondence is bf_angle[n+1]
Again for example, during 1＜M≤N, there are a plurality of figuration angles this moment, base station will be divided into for the PDSCH resource that above-mentioned any one interfered with terminal is distributed the M group, and the method for salary distribution is determined by simulation loading relevant parameter before, can also can be Random assignment for mean allocation, the corresponding figuration angle of each group PDSCH resource, and organize on PDSCH resource at each respectively, figuration angle and corresponding forming coefficient based on correspondence, mail to described any one interfered with terminal with signal to be sent.
This wave beam forming mode, be called multi-beam figuration mode, consults shown in Figure 5ly, in such cases, at the PRB that takies of above-mentioned any one interfered with terminal that loads, is divided into the M group in same subframe, and every group of PRB sends at different beam directions respectively.In different subframes, the beam direction that any one group of PRB that interfered with terminal is assigned to takies can be different, specifically can be according to N figuration direction of configuration, in different subframes, periodically change by 1 to N according to period of change, concrete variation pattern can be notified scheduler module 11 in real time by parameter configuration module 10.
For example, the PRB that above-mentioned any one user will be distributed in base station is divided into the N group, and the forming coefficient of first group of PRB configuration is bf_coeff[n], the forming coefficient of second group of PRB configuration is bf_coeff[n+1] ..., by that analogy; When the time arrived the boundary point of period of change, the associative operation when the forming coefficient update mode also can be with reference to the simple beam figuration, do not repeat them here.
In practical application, under special screne, as, the PRB number of interfered with terminal scheduling, less than M, does not carry out the PRB grouping, and all PRB send on same beam direction.
On the other hand, above-mentioned two kinds of wave beam forming modes can be distinguished by the switch of configuration in real time, at synchronization, only support a kind of wave beam load mode.
Consult shown in Figure 6ly, the concrete executive mode of the wave beam forming of step Y record can comprise:
Step y1: base station is according to the simulation loading relevant parameter, and the wave beam forming mode of judgement in current descending sub frame, if the simple beam figuration performs step y2; If the multi-beam figuration, perform step y3.
Step y2: bf_coeff[n is read in base station] all PRB of obtaining to interfered with terminal of configuration.
Step y3: all PRB that base station obtains interfered with terminal are divided into the M group, and the method for salary distribution is determined by simulation loading relevant parameter before, can also can be Random assignment for mean allocation, and initialization i=0, and i is the sequence number of PRB group; Herein, 1＜M≤N.
Does step y4: whether base station judge the sequence number i of i group PRB less than M, i.e. i＜M? if perform step y5; Otherwise, execution step y6.
Step y5: read bf_coeff[n+i] configuration is organized PRB to the i that interfered with terminal obtains, and execution i++, returns to step y4.
Step y6: base station, according to the forming coefficient of every group of PRB configuration, is treated transmitted signal and is carried out wave beam forming respectively.
Step Z: in above-mentioned any one descending sub frame, the signal after wave beam forming is mail to above-mentioned any one interfered with terminal.
For the test of outdoor intelligent antenna cells, the present invention program proposes simple beam figuration loading scheme, the impact of the strong jamming of test on a certain angle on real user.
In sum, in the embodiment of the present invention, testing apparatus, according to default simulation loading relevant parameter, uses virtual interfered with terminal to produce and disturb real measured terminal, thereby has completed the disturbed test to real measured terminal.With respect to using real interfered with terminal to carry out disturbed test, the execution complexity and the cost that adopt virtual interfered with terminal can effectively reduce the disturbed test flow process drop into.Be specially:
At first, the loading of PDCCH resource and PDSCH resource can be carried out respectively, its resource occupancy mode, transmitted power etc. parameter can arrange flexibly.For example: for the LTE system under the 20M bandwidth, dispose 100 PRB in descending sub frame, in the process of carrying out disturbed test that adopts virtual interfered with terminal, can construct exactly the PRBx(interfered with terminal takies) the PRBy(measured terminal is taken) interference, the running time-frequency resource proportioning of flexible allocation interfered with terminal and measured terminal, can't be so easy while adopting real interfered with terminal.
Secondly, when disturb at the alone family of test, be easy to realize the interference to measured terminal on specific direction of specific certain a part of running time-frequency resource, and in the test multi-user interference, be easy to construct multi-beam and disturb scene, and the number that can be dispersed in neatly the running time-frequency resource that uses on each figuration angle is set to identical or different, and real interfered with terminal can't accurately be reproduced the interference scene that meets testing requirement.
For example, in the embodiment of the present invention, under outdoor intelligent antenna cells environment, the simple beam figuration loading scheme that has proposed, be about to that interfered with terminal obtains PRB be placed on a figuration angle and send, thereby can test easily strong jamming on a certain figuration direction to tested user's impact.Simultaneously, multi-beam figuration loading scheme has also been proposed, after soon the PRB of interfered with terminal will be divided into many groups, be placed on a plurality of figuration angles and send, thereby can simulate under multi-user environment to measured terminal interference, wherein, the parameter flexibility and changeabilities such as figuration angle number, figuration angle period of change, can join in real time, thereby increased the flexibility of test, had good practical function.
Certainly, adopting the PDCCH resource or/and the PDSCH resource is described as running time-frequency resource in the embodiment of the present invention, is for the LTE system; In practical application, in other communication systems, for example WCDMA system, TD-SCDMA system, CDMA2000 system etc., although the running time-frequency resource definition mode is different from the LTE system, but the disturbed test method of embodiment of the present invention record is applicable equally, only need to carry out adaptability revision according to the specific definition mode of running time-frequency resource and get final product, do not repeat them here.
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 the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1. the implementation method of a terminal interference test, is characterized in that, comprising:
Obtain default simulation loading relevant parameter;
Load at least one virtual interfered with terminal according to described simulation loading relevant parameter, and according to described simulation loading relevant parameter, be that this at least one interfered with terminal is distributed corresponding running time-frequency resource;
On described running time-frequency resource to described at least one interfered with terminal transmitted signal, so that other real measured terminals are carried out disturbed test;
wherein, when the simulation loading relevant parameter according to default distributes corresponding running time-frequency resource for any one interfered with terminal, take subframe as the described corresponding running time-frequency resource of any one interfered with terminal distribution of stating as unit, in any one descending sub frame, for described any one interfered with terminal is distributed running time-frequency resource, comprise: the original position of determining current time-frequency resource allocating, be the running time-frequency resource number that interfered with terminal is reserved according to default loading ratio-dependent, from described original position, be that described any one interfered with terminal is distributed corresponding running time-frequency resource in the running time-frequency resource of described reservation, wherein, distribute for described any one interfered with terminal in the process of running time-frequency resource,, if know that the running time-frequency resource of distribution is taken by other-end, abandon the running time-frequency resource of current distribution, and in the running time-frequency resource of described reservation other running time-frequency resources of otherwise allocated.
2. the method for claim 1, it is characterized in that, while according to described simulation loading relevant parameter, being the corresponding running time-frequency resource of this at least one interfered with terminal distribution, be that described at least one interfered with terminal is distributed corresponding running time-frequency resource in the same residential quarter of measured terminal, to realize the co-channel interference test to described measured terminal, perhaps, be that described at least one interfered with terminal is distributed corresponding running time-frequency resource in the neighbor cell of measured terminal, to realize same frequency or the alien frequencies disturbed test to described measured terminal.
3. the method for claim 1, is characterized in that, described running time-frequency resource is the physical downlink control channel PDCCH resource, or/and, Physical Downlink Shared Channel PDSCH resource.
4. method as claimed in claim 3, is characterized in that, in any one descending sub frame, during to described at least one interfered with terminal transmitted signal, comprising on the PDSCH resource of distributing:
At least one figuration angle from described any one descending sub frame to described any one interfered with terminal transmitted signal that use while according to described simulation loading relevant parameter, determining in and corresponding forming coefficient;
In described any one descending sub frame, on the PDSCH resource of for described any one interfered with terminal, distributing, based on described at least one figuration angle and corresponding forming coefficient, signal to be sent is mail to described any one interfered with terminal.
5. method as claimed in claim 4, it is characterized in that, at least one figuration angle from described any one descending sub frame to described any one interfered with terminal transmitted signal that use while according to described simulation loading relevant parameter, determining in and corresponding forming coefficient comprise:
Confirm N the figuration direction of setting according to described simulation loading relevant parameter, and confirm respectively the forming coefficient of the figuration angle preset that corresponding each figuration direction forms;
In forming coefficient corresponding to the figuration angle of described N each self-forming of figuration direction, according to the multiple-input and multiple-output MIMO mode of described any one interfered with terminal, at least one figuration angle from the PDSCH resource of distributing to described any one interfered with terminal transmitted signal and the corresponding forming coefficient used while confirming in described any one descending sub frame on.
6. method as claimed in claim 4, it is characterized in that, in described any one descending sub frame, on the PDSCH resource of for described any one interfered with terminal, distributing, based on described at least one figuration angle and corresponding forming coefficient, signal to be sent is mail to described any one interfered with terminal, comprising:
To be divided into for the PDSCH resource that described any one interfered with terminal is distributed the M group, 1≤M≤N, N is the number of default figuration direction, the corresponding figuration angle of each group PDSCH resource, and respectively on each group PDSCH resource, figuration angle and corresponding forming coefficient based on correspondence, mail to described any one interfered with terminal with signal to be sent.
7. the implement device of a terminal interference test, is characterized in that, comprising:
Parameter configuration module, be used for obtaining default simulation loading relevant parameter;
Scheduler module, load at least one virtual interfered with terminal according to described simulation loading relevant parameter, and according to described simulation loading relevant parameter, be that this at least one interfered with terminal is distributed corresponding running time-frequency resource;
Sending module, be used on described running time-frequency resource to described at least one interfered with terminal transmitted signal, so that other real measured terminals are carried out disturbed test;
wherein, when described scheduler module is distributed corresponding running time-frequency resource at the simulation loading relevant parameter according to default for any one interfered with terminal, take subframe as the described corresponding running time-frequency resource of any one interfered with terminal distribution of stating as unit, wherein, described scheduler module is in any one descending sub frame, while for described any one interfered with terminal, distributing running time-frequency resource, comprise: the original position of determining current time-frequency resource allocating, be the running time-frequency resource number that interfered with terminal is reserved according to default loading ratio-dependent, from described original position, be that described any one interfered with terminal is distributed corresponding running time-frequency resource in the running time-frequency resource of described reservation, wherein, described scheduler module is that described any one interfered with terminal is distributed in the process of running time-frequency resource, if know that the running time-frequency resource of distribution is taken by other-end, abandon the running time-frequency resource of current distribution, and in the running time-frequency resource of described reservation other running time-frequency resources of otherwise allocated.
8. device as claimed in claim 7, it is characterized in that, when described scheduler module is the corresponding running time-frequency resource of this at least one interfered with terminal distribution according to described simulation loading relevant parameter, be that described at least one interfered with terminal is distributed corresponding running time-frequency resource in the same residential quarter of measured terminal, to realize the co-channel interference test to described measured terminal, perhaps, be that described at least one interfered with terminal is distributed corresponding running time-frequency resource in the neighbor cell of measured terminal, to realize same frequency or the alien frequencies disturbed test to described measured terminal.
9. device as claimed in claim 7, is characterized in that, the running time-frequency resource that described scheduler module is distributed is the physical downlink control channel PDCCH resource, or/and, Physical Downlink Shared Channel PDSCH resource.
10. device as claimed in claim 9, is characterized in that, described sending module in any one descending sub frame, during to described at least one interfered with terminal transmitted signal, comprising on the PDSCH resource of distributing:
At least one figuration angle from described any one descending sub frame to described any one interfered with terminal transmitted signal that use while according to described simulation loading relevant parameter, determining in and corresponding forming coefficient;
In described any one descending sub frame, on the PDSCH resource of for described any one interfered with terminal, distributing, based on described at least one figuration angle and corresponding forming coefficient, signal to be sent is mail to described any one interfered with terminal.
11. device as claimed in claim 10, it is characterized in that, at least one figuration angle that described sending module uses while according to described simulation loading relevant parameter, determining in described any one descending sub frame to described any one interfered with terminal transmitted signal and corresponding forming coefficient comprise:
Confirm N the figuration direction of setting according to described simulation loading relevant parameter, and confirm respectively the forming coefficient of the figuration angle preset that corresponding each figuration direction forms;
In forming coefficient corresponding to the figuration angle of described N each self-forming of figuration direction, according to the multiple-input and multiple-output MIMO mode of described any one interfered with terminal, at least one figuration angle from the PDSCH resource of distributing to described any one interfered with terminal transmitted signal and the corresponding forming coefficient used while confirming in described any one descending sub frame on.
12. device as claimed in claim 10, it is characterized in that, described sending module is in described any one descending sub frame, on the PDSCH resource of for described any one interfered with terminal, distributing, based on described at least one figuration angle and corresponding forming coefficient, signal to be sent is mail to described any one interfered with terminal, comprising:
Described sending module will be divided into for the PDSCH resource that described any one interfered with terminal is distributed the M group, 1≤M≤N, N is the number of default figuration direction, the corresponding figuration angle of each group PDSCH resource, and respectively on each group PDSCH resource, figuration angle and corresponding forming coefficient based on correspondence, mail to described any one interfered with terminal with signal to be sent.
13. a base station, is characterized in that, comprises the implement device as the described terminal interference test of claim 7-12 any one.
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| CN103841586A (en) * | 2012-11-20 | 2014-06-04 | 中兴通讯股份有限公司 | Method and apparatus for detecting downlink interference, and relay node |
| JPWO2016121251A1 (en) | 2015-01-29 | 2017-11-09 | ソニー株式会社 | Apparatus and method |
| CN106507385A (en) * | 2015-09-06 | 2017-03-15 | 深圳市道通智能航空技术有限公司 | A kind of air interference method of testing and system |
| EP3451605B1 (en) * | 2016-09-30 | 2022-03-09 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Channel transmission method, terminal device, and network device |
| CA3047897A1 (en) * | 2016-12-20 | 2018-06-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for transmitting data, terminal device and network device |
| CN106686616B (en) * | 2017-03-13 | 2020-11-03 | 武汉虹信通信技术有限责任公司 | Broadband cluster base station and broadband cluster terminal |
| CN112532330A (en) * | 2019-09-18 | 2021-03-19 | 中兴通讯股份有限公司 | Interference simulation system, method and device, interference test system, method and device |
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