CN104270180A - User equipment matching method and device - Google Patents
User equipment matching method and device Download PDFInfo
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- CN104270180A CN104270180A CN201410478035.6A CN201410478035A CN104270180A CN 104270180 A CN104270180 A CN 104270180A CN 201410478035 A CN201410478035 A CN 201410478035A CN 104270180 A CN104270180 A CN 104270180A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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Abstract
The embodiment of the invention provides a user equipment matching method and device applied to a multi-user multi-input multi-output system. The method includes the steps that a base station determines beams corresponding to user equipment in formed beams; whether the relation distance between the beams corresponding to any two pieces of user equipment is larger than a preset distance is judged; when the relation distance between the beams corresponding to any two pieces of user equipment is larger than the preset distance, it is determined that the two pieces of user equipment serve as matched user equipment; when the relation distance between the beams corresponding to any two pieces of user equipment is smaller than the preset distance, it is determined that the two pieces of user equipment are not matched. The method and device effectively prevent interference between matched users.
Description
Technical field
The application relates to wireless communication technology field, relates to a kind of subscriber equipment matching method and device in particular.
Background technology
In a wireless communication system, MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) be usually divided into SU-MIMO (Single-User MIMO, single user multiple-input and multiple-output) and MU-MIMO (Mulit-User MIMO, multi-user's multiple-input and multiple-output).SU-MIMO refers to the point-to-point antenna link of base station and unique user, MU-MIMO is then that multiple subscriber equipment uses identical running time-frequency resource and a base station communication, compared to SU-MIMO, MU-MIMO, when subscriber equipment adopts few antenna low cost, can keep the multiplexing advantage of MIMO.Namely pairing subscriber equipment refers to the subscriber equipment that can use identical running time-frequency resource in MU-MIMO.
When setting up MU-MIMO, network side needs first to carry out multi-user installation pairing, to determine which subscriber equipment can use identical running time-frequency resource, but, inventor finds under study for action, there is interference between pairing subscriber equipment, if match improper, more can increase the interference between pairing subscriber equipment, thus affect the spatial multiplexing gain of MIMO, therefore, how accurately realizing subscriber equipment pairing, is very important for MU-MUMO.
Summary of the invention
In view of this, this application provides a kind of subscriber equipment matching method and device, in order to reduce in MU-MIMO, the interference between pairing user is on the impact of spatial multiplexing gain.
For achieving the above object, the application provides following technical scheme:
First aspect, provide a kind of subscriber equipment matching method, be applied in multiuser mimo system, described method comprises:
The wave beam that subscriber equipment is corresponding, in the wave beam formed, is determined in base station;
Judge whether the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch;
When correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is greater than preset pitch, determine that described any two subscriber equipmenies are as pairing subscriber equipment;
When correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is less than preset pitch, determine that described any two subscriber equipmenies do not match.
In the first possibility implementation of described first aspect, described base station, in the wave beam formed, determines that the wave beam that subscriber equipment is corresponding comprises:
Obtain pre-coding matrix instruction and the order instruction of subscriber equipment transmission;
According to described pre-coding matrix instruction and the instruction of described order, determine the wave beam that described subscriber equipment is corresponding.
In conjunction with the first possibility implementation of described first aspect, in the second possibility implementation of described first aspect, described base station comprises 8 antennas; Described pre-coding matrix instruction comprises the first matrix numbering and the second matrix coder, and the product of described first matrix and described second matrix is pre-coding matrix;
Described according to described pre-coding matrix instruction and the instruction of described order, determine that the wave beam that described subscriber equipment is corresponding comprises:
Indicate according to described order, determine the data flow number of described subscriber equipment transmitted in parallel; According to described first matrix numbering and described second matrix numbering, determine the wave beam that each data flow of described subscriber equipment is corresponding, and the wave beam numbering in its wave beam formed in described base station.
In conjunction with described first aspect or described first aspect above-mentioned any one may implementation, in the third possibility implementation of described first aspect, different beams utilizes wave beam to number and distinguishes, wave beam numbering value is 0,1,2 ... correlation spacing between wave beam numbering difference table oscillography bundle, described preset pitch presets by the following method:
For any two wave beams, determine on a wave beam maximum antenna gain direction, antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam;
From the numbering difference of multiple any two wave beams obtained, select maximum numbering difference as described preset pitch;
Whether the described correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch comprises:
Judge whether the wave beam numbering difference of the corresponding wave beam of any two subscriber equipmenies is greater than described preset pitch.
In conjunction with described first aspect or described first aspect the second may the third of implementation or described first aspect may implementation, in the 5th kind of possibility implementation of described first aspect, different beams utilizes wave beam to number and distinguishes, wave beam numbering value is 0,1,2 ..., the correlation spacing between wave beam numbering difference table oscillography bundle;
Whether the described correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch comprises:
Judge in the wave beam that any two subscriber equipmenies are corresponding, whether wave beam numbering difference is at least greater than preset pitch corresponding to one of them wave beam;
Wherein, the preset pitch that described wave beam is corresponding presets by the following method:
For any one wave beam, determine on its maximum antenna gain direction, with its antenna gain difference another wave beam closest to pre-determined threshold, and on another wave beam maximum antenna gain direction described, when antenna gain difference between wave beam is not less than described pre-determined threshold, numbering difference between wave beam, and using the preset pitch of described numbering difference as described wave beam.
In conjunction with described first aspect or described first aspect above-mentioned any one may implementation, may in implementation at the 5th kind of described first aspect, when the described wave beam number determining that subscriber equipment is corresponding comprises multiple;
Whether the described correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch comprises:
Judge whether the correlation spacing between each wave beam that each wave beam that in any two subscriber equipmenies, one of them subscriber equipment is corresponding is corresponding with another subscriber equipment is all greater than preset pitch.
Second aspect, provide a kind of subscriber equipment contrast means, be applied to the base station in multiuser mimo system, described device comprises:
Wave beam determination module, in the wave beam that formed in base station, determines the wave beam that subscriber equipment is corresponding;
Judge module, for judging whether the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch;
First pairing determination module, when the correlation spacing for determining between the wave beam that described any two subscriber equipmenies are corresponding at described judge module is greater than preset pitch, determines that described any two subscriber equipmenies are as pairing subscriber equipment;
Second pairing determination module, when the correlation spacing for determining between the wave beam that described any two subscriber equipmenies are corresponding at described judge module is less than preset pitch, determines that described any two subscriber equipmenies do not match.
In the first possibility implementation of described second aspect, described wave beam determination module comprises:
Feedback information acquiring unit, the pre-coding matrix sent for obtaining subscriber equipment indicates and order instruction;
Wave beam determining unit, for according to described pre-coding matrix instruction and the instruction of described order, determines the wave beam that described subscriber equipment is corresponding.
In conjunction with the first possibility implementation of described second aspect, in the second possibility implementation of described second aspect, described base station comprises 8 antennas; Described pre-coding matrix instruction comprises the first matrix numbering and the second matrix coder, and the product of described first matrix and described second matrix is pre-coding matrix;
Described wave beam determination module comprises:
Number determining unit, for indicating according to described order, determines the data flow number of described subscriber equipment transmitted in parallel;
Numbering determining unit, for according to described first matrix numbering and described second matrix numbering, determines the wave beam that each data flow of described subscriber equipment is corresponding, and the wave beam numbering in its wave beam formed in described base station.
In conjunction with described second aspect or described second aspect above-mentioned any one may implementation, in the third possibility implementation of described second aspect, different beams utilizes wave beam to number and distinguishes, wave beam numbering value is 0,1,2 ... correlation spacing between wave beam numbering difference table oscillography bundle, described device also comprises:
First preset pitch setting module, for for any two wave beams, determine on a wave beam maximum antenna gain direction, antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam; From the numbering difference of multiple any two wave beams obtained, select maximum numbering difference as described preset pitch;
Described judge module specifically for:
Judge whether the wave beam numbering difference of the corresponding wave beam of any two subscriber equipmenies is greater than described preset pitch.
In conjunction with described second aspect or described second aspect the first may implementation or described second aspect the second may the third of implementation or described second aspect may implementation, in the 4th kind of possibility implementation of described second aspect, different beams utilizes wave beam to number and distinguishes, wave beam numbering value is 0,1,2 ..., the correlation spacing between wave beam numbering difference table oscillography bundle;
Described judge module specifically for:
Judge in the wave beam that any two subscriber equipmenies are corresponding, whether wave beam numbering difference is at least greater than preset pitch corresponding to one of them wave beam;
Described device also comprises:
Second preset pitch setting module, for for any one wave beam, determine on its maximum antenna gain direction, with its antenna gain difference another wave beam closest to pre-determined threshold, and on another wave beam maximum antenna gain direction described, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam, and using the preset pitch of described numbering difference as described wave beam.
In conjunction with described second aspect or described second aspect above-mentioned any one may implementation, may in implementation at the 5th kind of described second aspect, when the described wave beam number determining that subscriber equipment is corresponding comprises multiple;
Described judge module is specifically for judging whether the correlation spacing between each wave beam that each wave beam that in any two subscriber equipmenies, one of them subscriber equipment is corresponding is corresponding with another subscriber equipment is all greater than preset pitch.
To sum up, in the embodiment of the present application, in the wave beam that base station is formed, first the wave beam that subscriber equipment is corresponding is determined, whether preset pitch is greater than by the spacing between the wave beam that more any two subscriber equipmenies are corresponding, spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch, can determine that these any two subscriber equipmenies can match, when spacing between the wave beam that any two subscriber equipmenies are corresponding is less than preset pitch, determine that these any two subscriber equipmenies do not match.By the wave beam that more any two subscriber equipmenies are corresponding, thus correlation is stronger, namely any two subscriber equipmenies being less than preset pitch between wave beam do not match, avoid the stronger subscriber equipment of correlation and match the larger interference brought, therefore effectively can suppress the interference of matching between user, improve MU-MIMO gain.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only the embodiment of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The flow chart of a kind of subscriber equipment matching method embodiment that Fig. 1 provides for the embodiment of the present application;
The flow chart of a kind of another embodiment of subscriber equipment matching method that Fig. 2 provides for the embodiment of the present application.
The structural representation of a kind of subscriber equipment contrast means embodiment that Fig. 3 provides for the embodiment of the present application;
The structural representation of a kind of another embodiment of subscriber equipment contrast means that Fig. 4 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
The technical method of the application, be applied to and utilize multi-user's multiple-input and multiple-output (MU-MIMO, Mulit-User Multiple-Input Multiple-Output) technology various wireless communication systems in, such as Long Term Evolution (LTE, Long Term Evolution) system etc.
Subscriber equipment (UE, User Equipment) also can be referred to as user terminal (UT, User Terminal), mobile terminal (MT, Mobile Terminal), travelling carriage (MS, Mobile Station) etc.
Base station, base station transceiver (the BTS in GSM or CDMA can be referred to, Base Transceiver Station), also can be the base station (being called Node B) in WCDMA, it can also be the evolved base station (being called eNB or e-NodeB, evolution NodeB) in LTE.One or more community (cell) may be supported/manage in a base station, and when subscriber equipment needs and network service, network insertion is initiated in selection community by it.
Pairing user refers to the subscriber equipment that can use identical running time-frequency resource in MU-MIMO.Namely user's pairing refers to the pairing of subscriber equipment.
In MU-MIMO technology, prior art, in order to reduce the interference between pairing user, usually adopting close-to zero beam shaping criterion, by the channel quadrature between pairing user, suppressing the interference of matching between user.During employing close-to zero beam shaping criterion when calculating the wave beam weight of multi-user, need descending channel information as input.If the descending channel information obtained is inaccurate, can not be completely orthogonal between pairing user, the gain of MU-MIMO can be caused to decline.
In the embodiment of the present application, in the wave beam that base station is formed, first the wave beam that subscriber equipment is corresponding is determined, whether preset pitch is greater than by the spacing between the wave beam that more any two subscriber equipmenies are corresponding, spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch, can determine that these any two subscriber equipmenies can match, when the spacing between the wave beam that any two subscriber equipmenies are corresponding is less than preset pitch, determine that these any two subscriber equipmenies do not match.By the wave beam that more any two subscriber equipmenies are corresponding, spatial character and the spatial relation of any two subscriber equipmenies can be determined, thus correlation is stronger, namely any two subscriber equipmenies being less than preset pitch between wave beam do not match, avoid the stronger subscriber equipment pairing of correlation with larger interference, therefore effectively can suppress the interference of matching between user, improve MU-MIMO gain.
Below in conjunction with accompanying drawing, technical scheme is described in detail.
The flow chart of a kind of subscriber equipment matching method embodiment that Fig. 1 provides for the embodiment of the present application, be applied in MU-MIMO communication system, the method can comprise following step:
101: the wave beam that subscriber equipment is corresponding, in the wave beam formed, is determined in base station.
102: judge whether the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch.
103: when the correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is greater than preset pitch, determine that described any two subscriber equipmenies are as pairing subscriber equipment.
104: when the correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is less than preset pitch, determine described any two subscriber equipmenies not as pairing subscriber equipment.
Wherein, when the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding equals preset pitch, can determine that described any two subscriber equipmenies are as pairing subscriber equipment or determine that described any two subscriber equipmenies do not match.
Wave beam refers to by the antenna transmission electromagnetic wave upper shape formed at the earth's surface out.Different according to wave beam sensing in space, multiple wave beam can adopt wave beam to number and distinguish, wave beam numbering value is 0,1,2 ... such as with 3GPP (3rd Generation Partnership Project, 3rd generation partner program) to comprise 8 antennas be example to the base station that specifies of agreement, in technical scheme, the wave beam number that 8 antennas can be formed after code book weighting is 32, and wave beam numbering can be set to 0,1,2 respectively ... 31.
In a kind of possible implementation, in order to improve matching efficiency, whether the correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch can be determined by the numbering difference of wave beam corresponding to more any two subscriber equipmenies.
Different beams utilizes wave beam to number and distinguishes, and wave beam numbering value is 0,1,2 ... time, wave beam numbering difference can represent the correlation spacing between wave beam, and namely described preset pitch presets by the following method:
For any two wave beams, determine at a wave beam maximum antenna gain (unit: dB, decibel) on direction, antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam;
From the numbering difference of multiple any two wave beams obtained, select maximum numbering difference as described preset pitch.
Because its shape of different beams may be different, when the antenna gain between wave beam equals pre-determined threshold, the numbering difference obtained may be different.In order to match accurately, from the numbering difference of multiple any two wave beams calculated, select numerical value maximum as preset pitch.
In another kind of possibility implementation, each wave beam can pre-set a preset pitch.When judging arbitrary two wave beams, wave beam numbering difference is at least greater than the preset pitch of one of them wave beam.Certainly, in order to improve accuracy further, wave beam numbering difference needs all to be greater than the preset pitch that in described arbitrary two wave beams, each wave beam is corresponding.
The preset pitch that wave beam is corresponding can preset in the following manner:
For any one wave beam, determine on its maximum antenna gain direction, with its antenna gain difference another wave beam closest to pre-determined threshold, and on another wave beam maximum antenna gain direction described, when antenna gain difference between wave beam is not less than described pre-determined threshold, numbering difference between wave beam, and using the preset pitch of described numbering difference as described wave beam.
In another possibility implementation, when memory space is enough, also can be determined by the antenna gain comparing wave beam, namely judge on the maximum antenna gain direction of the wave beam that each subscriber equipment in any two subscriber equipmenies is corresponding, whether the difference of the antenna gain of the wave beam that these any two subscriber equipmenies are corresponding is greater than pre-determined threshold.If so, then can determine that the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch, if not, then can determine that the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is less than preset pitch.The antenna gain of wave beam can pre-determine and store.
Certainly, because any two subscriber equipmenies are on the maximum gain antenna direction of wave beam corresponding to any one subscriber equipment, the antenna gain difference of the wave beam that any two subscriber equipmenies are corresponding relatively.Therefore, under the scene that accuracy requirement is not high, also only can judge on the maximum antenna gain direction of the wave beam that any one subscriber equipment in any two subscriber equipmenies is corresponding, whether the difference of the antenna gain of the wave beam that these any two subscriber equipmenies are corresponding is greater than pre-determined threshold.
In the embodiment of the present application, base station is in its wave beam formed, first the wave beam that subscriber equipment is corresponding is determined, by determining the wave beam that subscriber equipment is corresponding, spatial character and the locus of subscriber equipment can be known, if the wave beam correlation spacing that subscriber equipment is corresponding is less than preset pitch, show that the correlation between subscriber equipment is stronger, if as the pairing subscriber equipment setting up MU-MIMO, the interference between pairing user will be increased, therefore the subscriber equipment that correlation is stronger is not as pairing subscriber equipment, and wave beam correlation spacing is greater than preset pitch, show that the correlation between subscriber equipment is relatively weak, then can as pairing subscriber equipment.By the spatial coherence according to subscriber equipment, realize the subscriber equipment pairing of MU-MIMO, the interference between pairing user can be reduced, particularly for cannot in the system of Obtaining Accurate channel information, such as FDD (Frequency Division Duplexing, Frequency Division Duplexing (FDD)) system, interference suppressioning effect is more obvious.
Wherein, the wave beam that subscriber equipment is corresponding is determined in base station, can determine the wave beam that subscriber equipment is corresponding, therefore see Fig. 2 according to the feedback of subscriber equipment, for the flow chart of a kind of another embodiment of subscriber equipment matching method that the embodiment of the present application provides, the method can comprise following step:
201: the pre-coding matrix instruction and the order instruction that obtain subscriber equipment transmission.
202: according to described pre-coding matrix instruction and the instruction of described order, determine the wave beam that described subscriber equipment is corresponding.
203: judge whether the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch.
204: when the correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is greater than preset pitch, determine that described any two subscriber equipmenies are as pairing subscriber equipment.
205: when the correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is less than preset pitch, determine that described any two subscriber equipmenies do not match.
Precoding technique (Precoding) is a kind of by the utilization to channel information, at a kind of preconditioning technique that transmitting terminal carries out transmission data, to adapt to corresponding channel circumstance, improves systematic function with this.
Pre-coding matrix instruction (PMI, Precoding matrix Indication) and order instruction (RI, Rank Indication) be sent to base station by subscriber equipment, pre-coding matrix can be determined by PMI in base station, can determine order by RI, order illustrates the number of subscriber equipment transmitted in parallel data flow.The data flow number of subscriber equipment, according to PMI and RI, can be determined in base station, and the wave beam numbering in wave beam corresponding to each data flow and the wave beam that formed in base station thereof, the beam position that different wave beam numberings is namely corresponding different.Wherein, because the wave beam that different data streams is corresponding may identical also possibility difference.Therefore, the wave beam corresponding according to each data flow, can determine the wave beam that subscriber equipment is corresponding.
Because subscriber equipment may corresponding multiple wave beam, whether the correlation spacing whether the correlation spacing therefore judging between the wave beam that any two subscriber equipmenies are corresponding is greater than between each wave beam that preset pitch specifically judges that in any two subscriber equipmenies, one of them subscriber equipment is corresponding each wave beam corresponding with another subscriber equipment is all greater than preset pitch.
Certainly, also can not consider that whether the wave beam that customer equipment data stream is corresponding is identical, the wave beam that each data flow of direct judgement subscriber equipment is corresponding, therefore, when the wave beam number of the correspondence of subscriber equipment is greater than 1, whether this correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch specifically can judge whether the correlation spacing between the wave beam that wave beam corresponding to each data flow of one of them subscriber equipment in any two subscriber equipmenies is corresponding with each data flow of another subscriber equipment is greater than preset pitch.
Such as first user equipment supposes corresponding wave beam 1 and wave beam 2, second subscriber equipment supposes corresponding wave beam 5 and wave beam 6, then need to be greater than preset pitch in the correlation spacing of wave beam 1 respectively and between wave beam 5 and wave beam 6, and the correlation spacing of wave beam 2 respectively and between wave beam 5 and wave beam 6 is when being greater than preset pitch, first user equipment and the second subscriber equipment just as pairing subscriber equipment, otherwise can not match.Wherein, the specific implementation whether the correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch see described in above-described embodiment, can not repeat them here.
In the present embodiment, PMI and RI that base station is fed back according to subscriber equipment, can determine in the wave beam formed at it, the wave beam that subscriber equipment is corresponding, whether preset pitch is greater than by the correlation spacing between the wave beam that more any two subscriber equipmenies are corresponding, when correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is greater than preset pitch, determine that described any two subscriber equipmenies are as pairing subscriber equipment; When correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is less than preset pitch, determine that described any two subscriber equipmenies do not match.The interference of matching between user effectively can be suppressed by the present embodiment.
Comprise 8 antennas for base station in 3GPP agreement below, technical scheme is described in detail, it should be noted that the application is not limited to 8 antennas.8 antenna formation wave beams are narrower, easily distinguished by subscriber equipment.
When base station comprises 8 antennas, usually configuration 8 CSI-RS (Channel-State Information reference signal is needed, channel state information reference signals) port, PDSCH (Physical Downlink Shared Channel can be obtained, Physical Downlink Shared Channel) the enhancing space feedback of transmission mode 9 li, this enhancing space feedback comprises four subarrays mainly for base station, each subarray comprises 2 cross polarised antennas, and each subarray is uniform linear array.Between the subarray that polarised direction is identical, weighting can embody spatial character, contributes to the scheduling of MU-MIMO, can predict multi-user interference, and the cross polarization in subarray brings and strengthens diversity effect.According to these criterions, the pre-coding matrix W of the PMI feedback of 8 CSI-RS ports can be decomposed into the product of 2 matrixes, the first matrix W 1 and the second matrix W 2, W=W1*W2, the weighting of the corresponding uniform linear array of W1, different W1 weights, can form the wave beam that spatial direction is different.Therefore PMI comprises the first matrix numbering and the second matrix numbering, finds the first matrix and the second matrix for index.
8 antennas that base station comprises can form 32 wave beams, and numbering is respectively 0,1,2 ... 31.And then the sensing schematic diagram of 32 wave beams can be drawn, each wave beam on difference is pointed to, corresponding different antenna gain.
According to the RI of subscriber equipment feedback, the value of order can be determined, and then the wave beam number that subscriber equipment is corresponding can be determined, such as, when order is 1 or 2, the corresponding wave beam number of subscriber equipment is 1, wherein, when order is 2, the wave beam that two data flow of subscriber equipment are corresponding is identical, is same wave beam, and wave beam corresponding to the different data streams due to subscriber equipment may be identical, therefore when different orders, wave beam number corresponding to subscriber equipment may be identical, as order be 3 or 4 time, the wave beam number that subscriber equipment is corresponding is 2.
According to the first matrix numbering and the second matrix numbering, correspondence can find the first matrix and the second matrix, can determine that subscriber equipment is in 32 wave beams according to the first matrix and the second matrix, the wave beam that spatial direction corresponding to each data flow is different, thus the wave beam numbering that subscriber equipment is corresponding can be determined.
Wherein, the first matrix numbering, the second matrix numbering and wave beam numbering, see the mapping table of table 1, have following mapping relations:
Table 1
By the mapping table of table 1, and the first matrix of subscriber equipment feedback is numbered and the second matrix numbering, the numbering of the wave beam that subscriber equipment is corresponding can be determined fast, such as the first matrix numbering comprises the 2, second matrix numbering when comprising 4, can determine wave beam that subscriber equipment is corresponding be numbered 17 wave beam.
After determining the wave beam that subscriber equipment is corresponding, by the correlation spacing of more any two subscriber equipmenies, determine whether these any two subscriber equipmenies can match.When correlation spacing is greater than preset pitch, determine that described any two subscriber equipmenies are as pairing subscriber equipment; When correlation spacing is less than preset pitch, determine that described any two subscriber equipmenies do not match.
Wherein, wave beam numbering difference can be adopted to represent correlation spacing, and preset pitch presets by the following method:
For any two wave beams, determine on a wave beam maximum antenna gain direction, antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam;
From the numbering difference of multiple any two wave beams obtained, select maximum numbering difference as described preset pitch.
Therefore, if the numbering difference between the wave beam that any two subscriber equipmenies are corresponding is greater than this preset pitch, then any two subscriber equipmenies can match, if be less than this preset pitch, then do not match.
Suppose that preset pitch is 10, if the wave beam of the corresponding wave beam of first user equipment is numbered 5, then second subscriber equipment of corresponding wave beam numbering between 0 ~ 15 and 27 ~ 31, comparatively strong with this first user device dependency, can not match; Second subscriber equipment of corresponding wave beam numbering between 16 ~ 26, can match with first user equipment.
Certainly, each wave beam also can pre-set a preset pitch.When judging arbitrary two wave beams, wave beam numbering difference is at least greater than the preset pitch of one of them wave beam.In addition, in order to improve accuracy further, wave beam numbering difference needs all to be greater than the preset pitch that in described arbitrary two wave beams, each wave beam is corresponding.The preset pitch that now wave beam is corresponding then can preset in the following manner:
For any one wave beam, determine on its maximum antenna gain direction, with its antenna gain difference another wave beam closest to pre-determined threshold, and on another wave beam maximum antenna gain direction described, when antenna gain difference between wave beam is not less than described pre-determined threshold, numbering difference between wave beam, and using the preset pitch of described numbering difference as described wave beam.
In addition, also can directly compare on the maximum antenna gain direction of wave beam corresponding to each subscriber equipment in any two subscriber equipmenies, whether the difference of the antenna gain of the wave beam that these any two subscriber equipmenies are corresponding is greater than pre-determined threshold, if not, then can determine that the correlation of any two subscriber equipmenies is strong, not match, if, then can determine that the correlation of any two subscriber equipmenies is relatively weak, can match.
Wherein, when the corresponding wave beam number of subscriber equipment comprises multiple, whether the correlation spacing then judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch specifically judges whether each wave beam correlation spacing each other that any two subscriber equipmenies are corresponding is all greater than preset pitch, if so, determine that described any two subscriber equipmenies are as pairing subscriber equipment; If not, determine that described any two subscriber equipmenies do not match.
For aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the application is not by the restriction of described sequence of movement, because according to the application, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the application is necessary.
The structural representation of a kind of subscriber equipment contrast means embodiment that Fig. 3 provides for the embodiment of the present application, this device is applied particularly in the base station in multiuser mimo system, and this device can comprise:
Wave beam determination module 301, in the wave beam that formed in base station, determines the wave beam that subscriber equipment is corresponding.
Judge module 302, for judging whether the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch.
First pairing determination module 303, when the correlation spacing for determining between the wave beam that described any two subscriber equipmenies are corresponding at described judge module is greater than preset pitch, determines that described any two subscriber equipmenies are as pairing subscriber equipment.
Second pairing determination module 304, when the correlation spacing for determining between the wave beam that described any two subscriber equipmenies are corresponding at described judge module is less than preset pitch, determines that described any two subscriber equipmenies do not match.
When correlation spacing between the wave beam that any two subscriber equipmenies are corresponding equals preset pitch, can determine that described any two subscriber equipmenies are as pairing subscriber equipment or determine that described any two subscriber equipmenies do not match.
Wherein, as a kind of possible implementation, different beams utilizes wave beam to number and distinguishes, and wave beam numbering value is 0,1,2 ..., the correlation spacing between wave beam numbering difference table oscillography bundle, this judge module 302 can be specifically for:
Judge whether the wave beam numbering difference of the corresponding wave beam of any two subscriber equipmenies is greater than described preset pitch.
Now, this device can also comprise:
First preset pitch setting module, for for any two wave beams, determine on a wave beam maximum antenna gain direction, antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam; From the numbering difference of multiple any two wave beams obtained, select maximum numbering difference as described preset pitch.
As the implementation that another is possible, described judge module specifically for:
Judge in the wave beam that any two subscriber equipmenies are corresponding, whether wave beam numbering difference is at least greater than preset pitch corresponding to one of them wave beam;
Now, this device can also comprise:
Second preset pitch setting module, for for any one wave beam, determine on its maximum antenna gain direction, with its antenna gain difference another wave beam closest to pre-determined threshold, and on another wave beam maximum antenna gain direction described, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam, and using the preset pitch of described numbering difference as described wave beam.
Certainly, may implementation at another, when memory space is enough, also can be determined by the antenna gain comparing wave beam, now judge module 302 specifically for:
Judge on the wave beam maximum antenna gain direction that each subscriber equipment in any two subscriber equipmenies is corresponding, whether the antenna gain difference of the corresponding wave beam of described any two subscriber equipmenies is greater than pre-determined threshold, if, determine that the correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is greater than described preset pitch, if not, determine that the correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is less than described preset pitch.
Certainly, because any two subscriber equipmenies are on the maximum gain antenna direction of wave beam corresponding to any one subscriber equipment, the antenna gain difference of the wave beam that any two subscriber equipmenies are corresponding relatively.Therefore, under the scene that accuracy requirement is not high, judge module also only can judge on the maximum antenna gain direction of the wave beam that any one subscriber equipment in any two subscriber equipmenies is corresponding, whether the antenna gain difference of the wave beam that these any two subscriber equipmenies are corresponding is greater than pre-determined threshold.
Wherein, the wave beam corresponding due to multiple data flow of a subscriber equipment may be identical or different, therefore subscriber equipment may corresponding multiple wave beam, and whether the correlation spacing that therefore whether judge module can be greater than specifically for the correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding between each wave beam that preset pitch specifically judges that in any two subscriber equipmenies, one of them subscriber equipment is corresponding each wave beam corresponding with another subscriber equipment is all greater than preset pitch.
In the embodiment of the present application, base station is in its wave beam formed, first the wave beam that subscriber equipment is corresponding is determined, by determining the wave beam that subscriber equipment is corresponding, spatial character and the locus of subscriber equipment can be known, if the wave beam correlation spacing that subscriber equipment is corresponding is less than preset pitch, show that the correlation between subscriber equipment is stronger, if as the pairing subscriber equipment setting up MU-MIMO, the interference between pairing user will be increased, therefore the subscriber equipment that correlation is stronger is not as pairing subscriber equipment, and wave beam correlation spacing is greater than preset pitch, show that the correlation between subscriber equipment is relatively weak, then can as pairing subscriber equipment.By the spatial coherence according to subscriber equipment, realize the subscriber equipment pairing of MU-MIMO, the interference between pairing user can be reduced, particularly for cannot in the system of Obtaining Accurate channel information, such as FDD (Frequency Division Duplexing, Frequency Division Duplexing (FDD)) system, interference suppressioning effect is more obvious.
Wherein, the wave beam that subscriber equipment is corresponding is determined in base station, the wave beam that subscriber equipment is corresponding can be determined according to the feedback of subscriber equipment, therefore see Fig. 4, for the structural representation of a kind of another embodiment of subscriber equipment contrast means that the embodiment of the present application provides, this device can comprise wave beam determination module 301, judge module 302, first pairing determination module 303 and the second pairing determination module 304, modules function can embodiment shown in Figure 3, be with difference embodiment illustrated in fig. 3, in the present embodiment, this wave beam determination module 301 can comprise:
Feedback information acquiring unit 401, the pre-coding matrix sent for obtaining subscriber equipment indicates and order instruction;
Wave beam determining unit 402, for according to described pre-coding matrix instruction and the instruction of described order, determines the wave beam that described subscriber equipment is corresponding.
Precoding technique (Precoding) is a kind of by the utilization to channel information, at a kind of preconditioning technique that transmitting terminal carries out transmission data, to adapt to corresponding channel circumstance, improves systematic function with this.
Pre-coding matrix instruction (PMI, Precoding matrix Indication) and order instruction (RI, Rank Indication) be sent to base station by subscriber equipment, pre-coding matrix can be determined by PMI in base station, can determine order by RI, order illustrates the number of subscriber equipment transmitted in parallel data flow.The data flow number of subscriber equipment, according to PMI and RI, can be determined in base station, and the wave beam numbering in wave beam corresponding to each data flow and the wave beam that formed in base station thereof, the beam position that different wave beam numberings is namely corresponding different.Wherein, because the wave beam that different data streams is corresponding may identical also possibility difference.Therefore, the wave beam corresponding according to each data flow, can determine the wave beam that subscriber equipment is corresponding.
In a practical application, when base station comprises 8 antennas; Described pre-coding matrix instruction comprises the first matrix numbering and the second matrix coder, and the product of described first matrix and described second matrix is pre-coding matrix, and under this scene, described wave beam determination module can comprise:
Number determining unit, for indicating according to described order, determines the data flow number of described subscriber equipment transmitted in parallel;
Numbering determining unit, for according to described first matrix numbering and described second matrix numbering, determines the wave beam that each data flow of described subscriber equipment is corresponding, and the wave beam numbering in its wave beam formed in described base station.
Wherein, wave beam numbering can be determined according to above-mentioned table 1.
Wherein, relatively correlation spacing can by comparing on the maximum antenna gain direction of wave beam corresponding to each subscriber equipment in any two subscriber equipmenies, the difference of the antenna gain of the wave beam that these any two subscriber equipmenies are corresponding is determined, owing to determining that wave beam is numbered, the antenna gain of the wave beam that more any two subscriber equipmenies are corresponding can be determined by comparing wave beam numbering.
Suppose that the preset difference value that the wave beam set is numbered is 10, if the wave beam of the corresponding wave beam of first user equipment is numbered 5, then second subscriber equipment of corresponding wave beam numbering between 0 ~ 15 and 27 ~ 31, comparatively strong with this first user device dependency, can not match; Second subscriber equipment of corresponding wave beam numbering between 16 ~ 26, can match with first user equipment.In this hypothesis, think the wave beam of wave beam numbering difference 10 corresponding antenna gain difference 10dB.
Because subscriber equipment may corresponding multiple wave beam, therefore judge module specifically can judge whether the correlation spacing between each wave beam that each wave beam that in any two subscriber equipmenies, one of them subscriber equipment is corresponding is corresponding with another subscriber equipment is all greater than preset pitch.
In the present embodiment, PMI and RI that base station is fed back according to subscriber equipment, can determine in the wave beam formed at it, the wave beam that subscriber equipment is corresponding, whether preset pitch is greater than by the correlation spacing between the wave beam that more any two subscriber equipmenies are corresponding, when correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is greater than preset pitch, determine that described any two subscriber equipmenies are as pairing subscriber equipment; When correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is less than preset pitch, determine that described any two subscriber equipmenies do not match.The interference of matching between user effectively can be suppressed by the present embodiment.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
For convenience of description, various unit is divided into describe respectively with function when describing above device.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing the application.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the application can add required common hardware by software and realizes.Based on such understanding, the technical scheme of the application can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the application or embodiment.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the application's protection range, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. a subscriber equipment matching method, is characterized in that, is applied in multiuser mimo system, and described method comprises:
The wave beam that subscriber equipment is corresponding, in the wave beam formed, is determined in base station;
Judge whether the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch;
When correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is greater than preset pitch, determine that described any two subscriber equipmenies are as pairing subscriber equipment;
When correlation spacing between the wave beam that described any two subscriber equipmenies are corresponding is less than preset pitch, determine that described any two subscriber equipmenies do not match.
2. method according to claim 1, is characterized in that, described base station, in the wave beam formed, determines that the wave beam that subscriber equipment is corresponding comprises:
Obtain pre-coding matrix instruction and the order instruction of subscriber equipment transmission;
According to described pre-coding matrix instruction and the instruction of described order, determine the wave beam that described subscriber equipment is corresponding.
3. method according to claim 2, is characterized in that, described base station comprises 8 antennas; Described pre-coding matrix instruction comprises the first matrix numbering and the second matrix coder, and the product of described first matrix and described second matrix is pre-coding matrix;
Described according to described pre-coding matrix instruction and the instruction of described order, determine that the wave beam that described subscriber equipment is corresponding comprises:
Indicate according to described order, determine the data flow number of described subscriber equipment transmitted in parallel; According to described first matrix numbering and described second matrix numbering, determine the wave beam that each data flow of described subscriber equipment is corresponding, and the wave beam numbering in its wave beam formed in described base station.
4. the method according to any one of claims 1 to 3, it is characterized in that, different beams utilizes wave beam to number and distinguishes, and wave beam numbering value is 0,1,2 ... correlation spacing between wave beam numbering difference table oscillography bundle, described preset pitch presets by the following method:
For any two wave beams, determine on a wave beam maximum antenna gain direction, antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam;
From the numbering difference of multiple any two wave beams obtained, select maximum numbering difference as described preset pitch;
Whether the described correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch comprises:
Judge whether the wave beam numbering difference of the corresponding wave beam of any two subscriber equipmenies is greater than described preset pitch.
5. the method according to any one of claims 1 to 3, is characterized in that, different beams utilizes wave beam to number and distinguishes, and wave beam numbering value is 0,1,2 ..., the correlation spacing between wave beam numbering difference table oscillography bundle;
Whether the described correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch comprises:
Judge in the wave beam that any two subscriber equipmenies are corresponding, whether wave beam numbering difference is at least greater than preset pitch corresponding to one of them wave beam;
Wherein, the preset pitch that described wave beam is corresponding presets by the following method:
For any one wave beam, determine on its maximum antenna gain direction, with its antenna gain difference another wave beam closest to pre-determined threshold, and on another wave beam maximum antenna gain direction described, when antenna gain difference between wave beam is not less than described pre-determined threshold, numbering difference between wave beam, and using the preset pitch of described numbering difference as described wave beam.
6. the method according to any one of Claims 1 to 5, is characterized in that, when the described wave beam number determining that subscriber equipment is corresponding comprises multiple;
Whether the described correlation spacing judging between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch comprises:
Judge whether the correlation spacing between each wave beam that each wave beam that in any two subscriber equipmenies, one of them subscriber equipment is corresponding is corresponding with another subscriber equipment is all greater than preset pitch.
7. a subscriber equipment contrast means, is characterized in that, is applied to the base station in multiuser mimo system, and described device comprises:
Wave beam determination module, in the wave beam that formed in base station, determines the wave beam that subscriber equipment is corresponding;
Judge module, for judging whether the correlation spacing between the wave beam that any two subscriber equipmenies are corresponding is greater than preset pitch;
First pairing determination module, when the correlation spacing for determining between the wave beam that described any two subscriber equipmenies are corresponding at described judge module is greater than preset pitch, determines that described any two subscriber equipmenies are as pairing subscriber equipment;
Second pairing determination module, when the correlation spacing for determining between the wave beam that described any two subscriber equipmenies are corresponding at described judge module is less than preset pitch, determines that described any two subscriber equipmenies do not match.
8. device according to claim 7, is characterized in that, described wave beam determination module comprises:
Feedback information acquiring unit, the pre-coding matrix sent for obtaining subscriber equipment indicates and order instruction;
Wave beam determining unit, for according to described pre-coding matrix instruction and the instruction of described order, determines the wave beam that described subscriber equipment is corresponding.
9. device according to claim 8, is characterized in that, described base station comprises 8 antennas; Described pre-coding matrix instruction comprises the first matrix numbering and the second matrix coder, and the product of described first matrix and described second matrix is pre-coding matrix;
Described wave beam determination module comprises:
Number determining unit, for indicating according to described order, determines the data flow number of described subscriber equipment transmitted in parallel;
Numbering determining unit, for according to described first matrix numbering and described second matrix numbering, determines the wave beam that each data flow of described subscriber equipment is corresponding, and the wave beam numbering in its wave beam formed in described base station.
10. the device according to any one of claim 7 ~ 9, is characterized in that, different beams utilizes wave beam to number and distinguishes, and wave beam numbering value is 0,1,2 ..., the correlation spacing between wave beam numbering difference table oscillography bundle, described device also comprises:
First preset pitch setting module, for for any two wave beams, determine on a wave beam maximum antenna gain direction, antenna gain difference between wave beam is closest to pre-determined threshold, and on another wave beam maximum antenna gain direction, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam; From the numbering difference of multiple any two wave beams obtained, select maximum numbering difference as described preset pitch;
Described judge module specifically for:
Judge whether the wave beam numbering difference of the corresponding wave beam of any two subscriber equipmenies is greater than described preset pitch.
11. devices according to any one of claim 7 ~ 9, is characterized in that, different beams utilizes wave beam to number and distinguishes, and wave beam numbering value is 0,1,2 ..., the correlation spacing between wave beam numbering difference table oscillography bundle;
Described judge module specifically for:
Judge in the wave beam that any two subscriber equipmenies are corresponding, whether wave beam numbering difference is at least greater than preset pitch corresponding to one of them wave beam;
Described device also comprises:
Second preset pitch setting module, for for any one wave beam, determine on its maximum antenna gain direction, with its antenna gain difference another wave beam closest to pre-determined threshold, and on another wave beam maximum antenna gain direction described, when antenna gain difference between wave beam is not less than described pre-determined threshold, the numbering difference between wave beam, and using the preset pitch of described numbering difference as described wave beam.
12. devices according to any one of claim 7 ~ 10, is characterized in that, when the described wave beam number determining that subscriber equipment is corresponding comprises multiple;
Described judge module is specifically for judging whether the correlation spacing between each wave beam that each wave beam that in any two subscriber equipmenies, one of them subscriber equipment is corresponding is corresponding with another subscriber equipment is all greater than preset pitch.
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Also Published As
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| CN104270180B (en) | 2017-10-17 |
| WO2016041402A1 (en) | 2016-03-24 |
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