CN102271349B - System and method for function test of uplink IRC (Interference Restraint Combination) algorithm - Google Patents
System and method for function test of uplink IRC (Interference Restraint Combination) algorithm Download PDFInfo
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- CN102271349B CN102271349B CN2011102074701A CN201110207470A CN102271349B CN 102271349 B CN102271349 B CN 102271349B CN 2011102074701 A CN2011102074701 A CN 2011102074701A CN 201110207470 A CN201110207470 A CN 201110207470A CN 102271349 B CN102271349 B CN 102271349B
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Abstract
The embodiment of the invention discloses a system and a method for function test of an uplink IRC (Interference Restraint Combination) algorithm, refers to the technical field of wireless communication, and aims to reduce cost on function test of the IRC algorithm. In the invention, the system for function test of the IRC algorithm comprises a first signal source, a second signal source, a first power divider, a second power divider, a coupling disc, an RRU (Remote Radio frequency Unit), and a base station, wherein the first power divider divides power of a neighbor cell user sent by the second signal source into eight paths of signals and then outputs the eight paths of signals to the coupling disc; the coupling disc outputs the eight paths of signals to the RRU, and outputs a calibrating signal to the second power divider; the second power divider divides power of the calibrating signal and a signal of a user of a local cell into one path of signal and then outputs the path of signal to the RRU; the RRU overlaps received signals and then outputs the signals to the base station; and the base station receives the signals output by the RRU. Application of the system and the method disclosed by the invention can reduce cost on function test of the IRC algorithm.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of uplink interference and suppress merge algorithm function test system and method.
Background technology
Uplink interference suppresses to merge (IRC) algorithm and is arranged on the algorithm of base station physical layer, and base station utilizes the IRC algorithm can calculate the Block Error Rate (BLER) of the upstream data of user terminal (UE) transmission.
In order to guarantee the accuracy of IRC algorithm, need to carry out functional test to the IRC algorithm, whether occur extremely to judge the IRC algorithm.
At present, the IRC algorithm is carried out test environment that functional test uses as shown in Figure 1, comprising two signal sources, two 8 channel bank simulators, eight 1 minute 2 power splitter, coupling disc, RRU and base stations.
Wherein, the interference user that signal source 1 and signal source 2 are simulated respectively this community user and adjacent cell, two signal sources all send Physical Uplink Shared Channel (PUSCH) data, and the running time-frequency resource of interference user need to cover the running time-frequency resource of this community user.Because the equipment of present each channel simulator manufacturing firm is not all supported the channel model of up 2*8, only support the channel model of 1*8, so namely construct two different channel circumstances and incoming wave angle in order to simulate as far as possible external field environment, must use 28 channel bank simulators.This community user utilizes 8 channel bank simulator 1(C8 instrument) simulation arrives the angle of arrival (DOA1) and the channel circumstance of base station, the interference user of adjacent cell utilizes 8 channel bank simulator 2(C8 instrument) simulation arrives the angle of arrival (DOA2) and the channel circumstance of base station, two 8 channel bank simulators use different channels, construct the different angles of arrival.
Use test environment as shown in Figure 1 to the concrete grammar that the IRC algorithm on base station carries out functional test to be: at first, close the IRC algorithm function on base station, the BLER of the signal data that the signal source of using high specific merging (MRC) algorithm calculation base station to receive is sent; Then, open the IRC algorithm function on base station, the BLER of the signal data that the signal source of using IRC algorithm calculation base station to receive is sent; The BLER that uses the IRC algorithm to calculate and the BLER that uses the MRC algorithm to calculate are compared,, if the BLER that use IRC algorithm calculates determines that less than the BLER that uses the MRC algorithm to calculate the function of IRC algorithm is normal, occur abnormal; If the BLER that use IRC algorithm calculates, more than or equal to the BLER that uses the MRC algorithm to calculate, determines that the function of IRC algorithm occurs abnormal.
Have a certain degree because the IRC algorithm needs arrival bearing's shape of interference user and this community user, angle is larger, and effect is better, and therefore can the test key be realize simulating the different angles of arrival of two users to base station.This kind scheme is utilized two channel simulators, the different angles of arrival of simulation two users, and simulation outfield scene that can be good, accurately verify the IRC algorithm function.
In realizing process of the present invention, the inventor gives in prior art and has following technical problem:
Need a large amount of subtest materials in order to build test environment in traditional scheme, as RF cable, the power splitter that shows in Fig. 1, and 28 channel bank simulators, cause test environment too complicated, need plenty of time debugging test environment, be not easy to very much the shortcoming of analyzing and positioning problem.
28 channel bank simulators have been used in traditional scheme, and the cost of 18 channel bank simulator is higher, and in the abnormal problem process of analyzing and positioning IRC algorithm function, the equipment in test environment is in idle state simultaneously, service efficiency is low, thereby has the too high shortcoming of testing cost.
Summary of the invention
The embodiment of the present invention provides a kind of IRC algorithm function test macro and method, for reducing the testing cost of IRC algorithm function.
A kind of system for the test of IRC algorithm function, this system comprises: one or more first signals source, one or more secondary signals source, the first power splitter, the second power splitter, coupling disc, long-distance radio frequency unit RRU and base station, and when this system comprised a first signal source, a secondary signal source, the first signal source directly was connected with the second power splitter, the secondary signal source directly is connected with the first power splitter; Perhaps, when this system comprised a first signal source, a plurality of secondary signals source, the first signal source directly was connected with the second power splitter, a plurality of secondary signals source is connected with the first power splitter by at least one the 4th power splitter; Perhaps, when this system comprises a plurality of first signals source, a secondary signal source, this a plurality of first signals source by at least one the 3rd power splitter be connected with the second power splitter, the secondary signal source directly is connected with the first power splitter; Perhaps, when this system comprises a plurality of first signals source, a plurality of secondary signals source, this a plurality of first signals source by at least one the 3rd power splitter be connected with the second power splitter, a plurality of secondary signals source passes through at least one the 4th power splitter and is connected with the first power splitter; Wherein,
After being divided into eight road signals, the adjacent cell subscriber signal merit that send in the secondary signal source that the first power splitter will receive exports to coupling disc; The eight road signals that coupling disc will receive are exported to RRU, and to the second power splitter output calibrating signal;
This community user signal that send in the described calibrating signal that the second power splitter will receive and first signal source, merit are exported to RRU after being divided into a road signal;
After superposeing, the signal of the coupling disc that RRU will receive and the output of the second power splitter exports to base station; Base station receives the signal of RRU output.
A kind of method of using said system test I RC algorithm function, the method comprises:
Base station receives the instruction that the IRC function is closed, and according to maximum, merges than the signal of MRC algorithm and the current RRU output that receives, and calculates the block error rate BLER of this community user signal;
Base station receives the instruction that the IRC function is opened, and, according to the signal of IRC algorithm and the current RRU output that receives, calculates the BLER of this community user signal;
Base station, according to IRC the algorithm BLER that calculates and the BLER that calculates according to the MRC algorithm, determines whether the function of IRC algorithm occurs extremely by relatively.
The system that is used for the test of IRC algorithm function that the embodiment of the present invention provides comprises: export to coupling disc after the adjacent cell subscriber signal merit that send one or more first signals source, one or more secondary signals source, the first power splitter, the second power splitter, coupling disc, long-distance radio frequency unit RRU and base station, the secondary signal source that the first power splitter will receive is divided into eight road signals; The eight road signals that coupling disc will receive are exported to RRU, and to the second power splitter output calibrating signal; This community user signal that send in the described calibrating signal that the second power splitter will receive and first signal source, merit are exported to RRU after being divided into a road signal; After superposeing, the signal of the coupling disc that RRU will receive and the output of the second power splitter exports to base station; Base station receives the signal of RRU output.As seen, in this system, this community user signal that the first signal source produces enters the calibration mouth of RRU by power splitter, the adjacent cell subscriber signal that the secondary signal source produces enters coupling disc by power splitter, compared with prior art, do not need 8 channel simulators and 81 minute 2 power splitters in native system, reduced the needed hardware device of test I RC algorithm function, thereby reduced the testing cost of IRC algorithm function.
Description of drawings
Fig. 1 is IRC test of heuristics environment schematic diagram of the prior art;
The IRC test of heuristics system schematic that Fig. 2 provides for the embodiment of the present invention;
The system schematic that Fig. 3 A provides for the embodiment of the present invention one;
The system schematic that Fig. 3 B provides for the embodiment of the present invention two;
The method flow schematic diagram that Fig. 4 provides for the embodiment of the present invention.
Embodiment
In order to reduce the testing cost of IRC algorithm function, the embodiment of the present invention provides a kind of system for the test of IRC algorithm function, in this system, use the first signal source to produce this community user signal, this community user signal enters the calibration mouth of RRU by power splitter, the secondary signal source produces the adjacent cell subscriber signal, and the adjacent cell subscriber signal enters coupling disc by power splitter.
As shown in Figure 2, the system that is used for the test of IRC algorithm function that the embodiment of the present invention provides, comprise: one or more first signals source, one or more secondary signals source, the first power splitter, the second power splitter, coupling disc, long-distance radio frequency unit (RRU) and base station, wherein
After being divided into eight road signals, the adjacent cell subscriber signal merit that send in the secondary signal source that the first power splitter will receive exports to coupling disc; The eight road signals that coupling disc will receive are exported to RRU, and to the second power splitter output calibrating signal;
This community user signal that send in the described calibrating signal that the second power splitter will receive and first signal source, merit are exported to RRU after being divided into a road signal;
After superposeing, the signal of the coupling disc that RRU will receive and the output of the second power splitter exports to base station; Base station receives the signal of RRU output.
Concrete, described the first power splitter can be 1 minute 8 power splitter; Described the second power splitter can be 1 minute 2 power splitter.
Concrete, when this system comprised a first signal source, the first signal source directly was connected with the second power splitter by the radio frequency connecting line; When this system comprised a plurality of first signals source, this a plurality of first signals source was connected with the second power splitter by at least one the 3rd power splitter.The 3rd power splitter also can be 1 minute 2 centimeters device.For example, when this system comprises two first signal sources, need the 3rd power splitter, at first these two first signal sources are connected with the input of the 3rd power splitter, and the output of the 3rd power splitter is connected with the second power splitter again.Again for example, when this system comprises three first signal sources, need two the 3rd power splitters, at first wherein two first signal sources are connected with the input of the 3rd power splitter, the 3rd first signal source is connected with the input of another the 3rd power splitter, and so the output of latter two the 3rd power splitter is connected with the second power splitter again.When this system comprises more first signals source, connected mode the like, repeat no more here.
Concrete, when this system comprised a secondary signal source, the secondary signal source directly was connected with the first power splitter; When this system comprised a plurality of secondary signals source, this a plurality of secondary signals source was connected with the first power splitter by at least one the 4th power splitter.The 4th power splitter also can be 1 minute 2 centimeters device.For example, when this system comprises two secondary signal sources, need the 4th power splitter, at first these two secondary signal sources are connected with the input of the 4th power splitter, and the output of the 4th power splitter is connected with the first power splitter again.Again for example, when this system comprises three secondary signal sources, need two the 4th power splitters, at first wherein two secondary signal sources are connected with the input of the 4th power splitter, the 3rd secondary signal source is connected with the input of another the 4th power splitter, and so the output of latter two the 4th power splitter is connected with the first power splitter again.When this system comprises more secondary signals source, connected mode the like, repeat no more here.
Concrete, the adjacent cell subscriber signal merit that send in the secondary signal source that the first power splitter will receive is divided into eight antenna input ports of exporting to respectively coupling disc after eight road signals; The signal that coupling disc will receive in each antenna input port is exported to antenna input port corresponding on RRU by the antenna delivery outlet of correspondence, and by the calibration mouth of self, to the second power splitter, exports calibrating signal;
This community user signal that send in the described calibrating signal that the second power splitter will receive and first signal source, merit are divided into after a road signal calibration mouth of exporting to RRU;
After superposeing, the signal of the signal of the coupling disc output that RRU will receive from each antenna input port and the second power splitter output of receiving from the calibration mouth exports to base station; Base station receives the signal of RRU output.
Better, the phase place of eight input aerials of coupling disc is all not consistent.Reason is as follows:
use the first signal source to produce this community user signal, from calibration mouthful access RRU, DOA between this community user signal and base station is 90 degree at this moment, because coupling disc calibration mouth only has calibrating signal and downstream signal, do not disturb upward signal under tdd mode, so use the secondary signal source to produce the adjacent cell subscriber signal, make it 8 input aerials by the first power splitter butt coupling dish, the phase relation of using vector network analyzer to observe these 8 input aerials, the phase place that guarantees as far as possible 8 input aerials is inconsistent, thereby it is very low to make DOA between adjacent cell subscriber signal and base station equal the probability of 90 degree.As long as the DOA between adjacent cell subscriber signal and base station and 90 degree have certain deviation, the IRC algorithm is compared MRC and is just had gain, and deviation is larger, gains larger, so just can test the function of IRC algorithm qualitatively.
Better,, in order to guarantee the accuracy of IRC algorithm function test result, have at least a pair of first signal source and secondary signal source that meets following condition in this system: the shared running time-frequency resource of the shared running time-frequency resource of the adjacent cell subscriber signal that this first signal source sends and this community user signal of this secondary signal source transmission is identical.For example, while having a first signal source and a secondary signal source in system, the shared running time-frequency resource of the shared running time-frequency resource of the adjacent cell subscriber signal that this first signal source sends and this community user signal of secondary signal source transmission is identical; Again for example, while having two first signal sources and two secondary signal sources in system, the shared running time-frequency resource of the shared running time-frequency resource of the adjacent cell subscriber signal that one of them first signal source sends and this community user signal that one of them secondary signal source sends is identical, and the shared running time-frequency resource of the shared running time-frequency resource of the adjacent cell subscriber signal that another first signal source sends and this community user signal of another secondary signal source transmission is identical.
Better, for fear of the interference of subscriber signal in residential quarter, while having a plurality of first signals source in this system, the shared running time-frequency resource of the adjacent cell subscriber signal that this a plurality of first signals source sends is all not identical.
While having a plurality of secondary signals source in this system, the shared running time-frequency resource of this community user signal that this a plurality of secondary signals source sends is all not identical.
Better, also be provided with attenuator between first centimeter device and coupling disc, this attenuator is with the adjacent cell subscriber signal of the first centimeter device output coupling disc after rear output of decaying, further to improve the accuracy of IRC algorithm function test result.
Embodiment one:
As shown in Figure 3A, the system that is used for the test of IRC algorithm function comprises: signal source 1, signal source 2,1 minute 8 power splitter, 1 minute 2 power splitter, coupling disc, RRU and base station, wherein,
The adjacent cell subscriber signal merit that the signal source 2 that 1 minute 8 power splitter will receive is sent is divided into eight antenna input ports of exporting to respectively coupling disc after eight road signals; The signal that coupling disc will receive in each antenna input port is exported to antenna input port corresponding on RRU by the antenna delivery outlet of correspondence, and by the calibration mouth of self, to 1 minute 2 power splitter, exports calibrating signals;
This community user signal that the described calibrating signal that 1 minute 2 power splitter will receive and signal source 1 are sent, merit are divided into after a road signal calibration mouth of exporting to RRU;
After superposeing, the signal of the signal of the coupling disc output that RRU will receive from each antenna input port and the 2 power splitters outputs in 1 minute that receive from the calibration mouth exports to base station; Base station receives the signal of RRU output.
Better, the phase place of eight input aerials of coupling disc is all not consistent.
Better, the shared running time-frequency resource of the shared running time-frequency resource of the adjacent cell subscriber signal that signal source 2 sends and this community user signal of signal source 1 transmission is identical.
Embodiment two:
As shown in Figure 3 B, the system that is used for the test of IRC algorithm function comprises: signal source 1, signal source 2, signal source 3, signal source 4,1 minute 8 power splitter, three 1 minute 2 power splitter, coupling disc, RRU and base stations, wherein,
The adjacent cell subscriber signal that signal source 3 and signal source 4 are sent arrives 1 minute 8 power splitter through 1 minute 2 power splitter, and the adjacent cell subscriber signal merit that 1 minute 8 power splitter will receive is divided into eight antenna input ports of exporting to respectively coupling disc after eight road signals; The signal that coupling disc will receive in each antenna input port is exported to antenna input port corresponding on RRU by the antenna delivery outlet of correspondence, and by the calibration mouth of self, to 1 minute 2 power splitter, exports calibrating signals;
This community user signal that signal source 1 and signal source 2 are sent arrives the 3rd 1 minute 2 power splitter through another 1 minute 2 power splitter, calibrating signal and this community user signal that these 1 minute 2 power splitter will receive, merit are divided into after a road signal calibration mouth of exporting to RRU;
After superposeing, the signal of the signal of the coupling disc output that RRU will receive from each antenna input port and the 2 power splitters outputs in 1 minute that receive from the calibration mouth exports to base station; Base station receives the signal of RRU output.
Better, the phase place of eight input aerials of coupling disc is all not consistent.
Better, the shared running time-frequency resource of the shared running time-frequency resource of the adjacent cell subscriber signal that signal source 3 sends and this community user signal that signal source 2 sends is identical, and the shared running time-frequency resource of the shared running time-frequency resource of the adjacent cell subscriber signal that signal source 4 sends and this community user signal of signal source 1 transmission is identical.
Better, the shared running time-frequency resource of this community user signal that this community user signal that signal source 1 sends and signal source 2 send is not identical.The shared running time-frequency resource of the adjacent cell subscriber signal that the adjacent cell subscriber signal that signal source 3 sends and signal source 4 send is not identical.
To being described as follows of coupling disc:
The coupling disc that is used for intelligent antenna calibration is comprised of 9 input ports and 8 output ports.9 input ports comprise: 8 I/O port (RF connector)+1cal Port(calibrates mouth) form.8 output ports are comprised of 8 Antenna element RF connector port.Except calibration mouthful, input port and output port are corresponding one by one, a calibration mouthful input calibration signal, and calibrating signal is added to respectively on 8 paths and superposes with uplink and downlink signals by two merits.8 road signals are owing to there are differences between phase place, and by entering base station after RRU, base station be multiply by antenna factor according to the difference of the calibrating signal of each passage to useful signal.
Antenna calibration is divided into sending calibration and receiving to be calibrated.While sending calibration, the calibration path is in accepting state, and active channel is in the transmission state, and the calibrating sequence that the utilization of calibration path receives calculates phase place and the amplitude error of each path, and produces antenna factor.While receiving calibration, the calibration path is in the transmission state, and active channel is in accepting state, and the calibrating sequence that each active channel utilization receives the transmission of calibration path calculates its phase place and amplitude, and produces antenna factor.
Referring to Fig. 4, the embodiment of the present invention provides a kind of method of using said system test I RC algorithm function, comprises the following steps:
Step 40: base station receives the instruction that the IRC function is closed, and, according to the signal of MRC algorithm and the current RRU output that receives, calculates the BLER of this community user signal;
Step 41: base station receives the instruction that the IRC function is opened, and, according to the signal of IRC algorithm and the current RRU output that receives, calculates the BLER of this community user signal;
Step 42: base station, according to IRC the algorithm BLER that calculates and the BLER that calculates according to the MRC algorithm, determines whether the function of IRC algorithm occurs extremely by relatively.
Concrete, described base station, according to IRC the algorithm BLER that calculates and the BLER that calculates according to the MRC algorithm, determines whether the function of IRC algorithm occurs extremely comprising by relatively:
If the BLER that calculates according to the IRC algorithm, less than the BLER that calculates according to the MRC algorithm, determines that the function of IRC algorithm does not occur extremely, otherwise, determine that the function of IRC algorithm occurs extremely.
The instruction that the instruction that the IRC function is here closed, IRC function are opened can be manually by PC, to input.
When existing a plurality of first signals source namely to have this community user of multichannel signal, the BLER of each road this community user signal when receiving the instruction that the IRC function closes,, according to the signal of MRC algorithm and the current RRU output that receives, is calculated in base station; Can distinguish each road this community user signal by the cell ID in this community user signal; The BLER of each road this community user signal when receiving the instruction of IRC function unlatching,, according to the signal of IRC algorithm and the current RRU output that receives, is calculated in base station; Then, by comparing the BLER of this community user signal that calculates according to the IRC algorithm,, with the BLER of corresponding this community user signal that calculates according to the MRC algorithm, determine whether the function of IRC algorithm occurs extremely.If the BLER of this community user signal that calculates according to the IRC algorithm, less than the BLER of this community user of the correspondence signal that calculates according to the MRC algorithm, determines that the function of IRC algorithm does not occur extremely, otherwise, determine that the function of IRC algorithm occurs extremely.Can be consistent according to definite result of each road this community user signal.
To sum up, beneficial effect of the present invention comprises:
The system that is used for the test of IRC algorithm function that the embodiment of the present invention provides comprises: export to coupling disc after the adjacent cell subscriber signal merit that send one or more first signals source, one or more secondary signals source, the first power splitter, the second power splitter, coupling disc, long-distance radio frequency unit RRU and base station, the secondary signal source that the first power splitter will receive is divided into eight road signals; The eight road signals that coupling disc will receive are exported to RRU, and to the second power splitter output calibrating signal; This community user signal that send in the described calibrating signal that the second power splitter will receive and first signal source, merit are exported to RRU after being divided into a road signal; After superposeing, the signal of the coupling disc that RRU will receive and the output of the second power splitter exports to base station; Base station receives the signal of RRU output.As seen, in this system, this community user signal that the first signal source produces enters the calibration mouth of RRU by power splitter, the adjacent cell subscriber signal that the secondary signal source produces enters coupling disc by power splitter, compared with prior art, do not need 8 channel simulators and 81 minute 2 power splitters in native system, reduced the needed hardware device of test I RC algorithm function, thereby reduced the testing cost of IRC algorithm function.
The present invention has simplified the test environment of IRC algorithm function, is conducive to carry out analyzing and positioning for the problem of finding in test process; Also be conducive in laboratory, under the condition of channel simulator, the realization of IRC function tested not having.
The present invention describes with reference to flow chart and/or the block diagram of method, equipment (system) and computer program according to the embodiment of the present invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of realizing in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step to produce computer implemented processing, thereby be provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction of carrying out on computer or other programmable devices.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
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 (10)
1. one kind is used for disturbing the system that suppresses to merge the test of IRC algorithm function, it is characterized in that, this system comprises: one or more first signals source, one or more secondary signals source, the first power splitter, the second power splitter, coupling disc, long-distance radio frequency unit RRU and base station, and when this system comprised a first signal source, a secondary signal source, the first signal source directly was connected with the second power splitter, the secondary signal source directly is connected with the first power splitter; Perhaps, when this system comprised a first signal source, a plurality of secondary signals source, the first signal source directly was connected with the second power splitter, a plurality of secondary signals source is connected with the first power splitter by at least one the 4th power splitter; Perhaps, when this system comprises a plurality of first signals source, a secondary signal source, this a plurality of first signals source by at least one the 3rd power splitter be connected with the second power splitter, the secondary signal source directly is connected with the first power splitter; Perhaps, when this system comprises a plurality of first signals source, a plurality of secondary signals source, this a plurality of first signals source by at least one the 3rd power splitter be connected with the second power splitter, a plurality of secondary signals source passes through at least one the 4th power splitter and is connected with the first power splitter; Wherein,
After being divided into eight road signals, the adjacent cell subscriber signal merit that send in the secondary signal source that the first power splitter will receive exports to coupling disc; The eight road signals that coupling disc will receive are exported to RRU, and to the second power splitter output calibrating signal;
This community user signal that send in the described calibrating signal that the second power splitter will receive and first signal source, merit are exported to RRU after being divided into a road signal;
After superposeing, the signal of the coupling disc that RRU will receive and the output of the second power splitter exports to base station; Base station receives the signal of RRU output.
2. the system as claimed in claim 1, is characterized in that, described the first power splitter is 1 minute 8 power splitter; Described the second power splitter is 1 minute 2 power splitter.
3. the system as claimed in claim 1, is characterized in that, the adjacent cell subscriber signal merit that send in the secondary signal source that the first power splitter will receive is divided into eight antenna input ports of exporting to respectively coupling disc after eight road signals; The signal that coupling disc will receive in each antenna input port is exported to antenna input port corresponding on RRU by the antenna delivery outlet of correspondence, and by the calibration mouth of self, to the second power splitter, exports calibrating signal;
This community user signal that send in the described calibrating signal that the second power splitter will receive and first signal source, merit are divided into after a road signal calibration mouth of exporting to RRU;
After superposeing, the signal of the signal of the coupling disc output that RRU will receive from each antenna input port and the second power splitter output of receiving from the calibration mouth exports to base station; Base station receives the signal of RRU output.
4. system as claimed in claim 3, is characterized in that, the phase place of eight input aerials of coupling disc is all not consistent.
5. the system as claimed in claim 1, is characterized in that, has at least a pair of first signal source and the secondary signal source that meets following condition in this system:
The shared running time-frequency resource of the shared running time-frequency resource of the adjacent cell subscriber signal that this first signal source sends and this community user signal of this secondary signal source transmission is identical.
6. the system as claimed in claim 1, is characterized in that, while having a plurality of first signals source in this system, the shared running time-frequency resource of the adjacent cell subscriber signal that this a plurality of first signals source sends is all not identical.
7. the system as claimed in claim 1, is characterized in that, while having a plurality of secondary signals source in this system, the shared running time-frequency resource of this community user signal that this a plurality of secondary signals source sends is all not identical.
8. the system as claimed in claim 1, is characterized in that, also is provided with attenuator between the first power splitter and coupling disc, and this attenuator is with the adjacent cell subscriber signal of the first power splitter output coupling disc after rear output of decaying.
9. the method for arbitrary described system testing IRC algorithm function in a use such as claim 1-8, is characterized in that, the method comprises:
Base station receives the instruction that the IRC function is closed, and according to maximum, merges than the signal of MRC algorithm and the current RRU output that receives, and calculates the block error rate BLER of this community user signal;
Base station receives the instruction that the IRC function is opened, and, according to the signal of IRC algorithm and the current RRU output that receives, calculates the BLER of this community user signal;
Base station, according to IRC the algorithm BLER that calculates and the BLER that calculates according to the MRC algorithm, determines whether the function of IRC algorithm occurs extremely by relatively.
10. method as claimed in claim 9, is characterized in that, described base station, according to IRC the algorithm BLER that calculates and the BLER that calculates according to the MRC algorithm, determines whether the function of IRC algorithm occurs extremely comprising by relatively:
If the BLER that calculates according to the IRC algorithm, less than the BLER that calculates according to the MRC algorithm, determines that the function of IRC algorithm does not occur extremely, otherwise, determine that the function of IRC algorithm occurs extremely.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102074701A CN102271349B (en) | 2011-07-22 | 2011-07-22 | System and method for function test of uplink IRC (Interference Restraint Combination) algorithm |
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| CN2011102074701A CN102271349B (en) | 2011-07-22 | 2011-07-22 | System and method for function test of uplink IRC (Interference Restraint Combination) algorithm |
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| CN102271349B true CN102271349B (en) | 2013-11-20 |
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| CN2011102074701A Active CN102271349B (en) | 2011-07-22 | 2011-07-22 | System and method for function test of uplink IRC (Interference Restraint Combination) algorithm |
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| CN107426744A (en) * | 2016-05-23 | 2017-12-01 | 中兴通讯股份有限公司 | The system of selection of cell signal and device |
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