CN104469688A - A pre-coding method, apparatus and system - Google Patents
A pre-coding method, apparatus and system Download PDFInfo
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- CN104469688A CN104469688A CN201310432098.3A CN201310432098A CN104469688A CN 104469688 A CN104469688 A CN 104469688A CN 201310432098 A CN201310432098 A CN 201310432098A CN 104469688 A CN104469688 A CN 104469688A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a pre-coding method, an apparatus and a system. The invention mainly includes: determining, by a micro base station, position information of a terminal relative to the micro base station, and reporting the position information to a macro base station; determining, by the macro base station, position information of the terminal relative to the macro base station in accordance with the position information of the terminal relative to the micro base station, and pre-stored position information of the micro base station relative to the macro base station; and after determining a beam serial number corresponding to the position information, issuing a beam corresponding to the beam serial number to the terminal, such that the terminal needs only to detect the beam issued by the macro base station with respect to the terminal when the terminal scans and detects the beam, and thus the time of scanning and detecting can be shortened, and power consumption can be reduced. Meanwhile, if the beams issued by the macro base station with respect to arbitrary two terminals do not overlap, there is no need of allocating orthogonal resources to the two terminals, and there is no interference even if multiplexing resources are allocated, and thus occupancy of resources can be reduced efficiently.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method, apparatus and system of precoding.
Background technology
Base station is when carrying out pre-encode operation, first beam signal can be issued to the terminal in coverage, by terminal, scan-type detection is carried out to beam signal, the beam signal that received power is maximum is determined from the beam signal detected, and the sequence number of the beam signal determined is fed back to base station, so that base station is according to the corresponding relation between the sequence number prestored and precoding mode, determine the precoding mode that the sequence number of terminal feedback is corresponding, and then utilize the precoding mode determined to carry out pre-encode operation.
When base station issues beam signal to terminal, omnidirectional's mode is adopted to issue, namely beam signal is issued by extensive antenna system (as the shaped aerial system) omnidirectional of base station, terminal is when scan-type detection beam signal, in order to beam signal as much as possible be detected, needing open higher received power and scan for a long time, making the scan-type testing process power consumption of terminal high, and sweep time is long, postpone to base station feedback sequence number; Simultaneously, multiple terminals in base station range are simultaneously when scan-type detection beam signal, in order to avoid interference, base station is the resource for received beam signal of each terminal distribution (can be frequency domain resource, also can be time-domain resource) need be orthogonal, when terminal quantity in base station range is more, the process of terminal scanning formula detection beam signal will take a large amount of resources.
Summary of the invention
The embodiment of the present invention provides a kind of method, apparatus and system of precoding, in order to solve the terminal scanning testing process power consumption consuming time existed in prior art, and expends the problem of numerous orthogonal running time-frequency resource.
The embodiment of the present invention is by the following technical solutions:
A kind of method for precoding, described method comprises:
Macro base station receives the primary importance information that micro-base station reports, and described primary importance information is the positional information of terminal relative to described micro-base station;
Macro base station relative to the second place information of macro base station and described primary importance information, determines three positional information of described terminal relative to macro base station according to described micro-base station;
Corresponding relation between the beam sequences of the wave beam that macro base station issues according to positional information and macro base station number, determines at least one beam sequences number corresponding with described 3rd positional information;
The beam sequences determined number is notified described terminal by macro base station, and issue described beam sequences number corresponding wave beam, make terminal according to the beam sequences number received, detect this beam sequences number corresponding wave beam, and the beam sequences number of detect wave beam is fed back to macro base station;
Macro base station carries out pre-encode operation after determining corresponding precoding mode according to the described sequence number received.
In embodiments of the present invention, terminal, when carrying out beam scanning and detecting, only need detect several wave beams that macro base station issues for this terminal, can shorten the Scanning Detction time of terminal, reduces power consumption; Meanwhile, if the wave beam that macro base station issues for any two terminals is not overlapping, then without the need to being the orthogonal resource of this two terminal distribution, even if distribute multiplexing resource also interference can not be caused, effectively can reduce taking resource.
Preferably, described primary importance information is determined in the following manner:
Micro-base station omnidirectional issues wave beam, and after the wave beam that described terminal issues micro-base station carries out Scanning Detction, receives the beam sequences number of a wave beam of described terminal feedback;
Corresponding relation between the beam sequences of the wave beam that micro-base station issues according to positional information and micro-base station number, using the beam sequences of described terminal feedback number corresponding positional information as described primary importance information.
Wave beam is issued and the beam sequences number of receiving terminal feedback to terminal in embodiments of the present invention by micro-base station, and then can the positional information of terminal according to a preliminary estimate.
Preferably, the beam sequences determined number is notified described terminal by described macro base station, specifically comprises:
Described macro base station generates broadcast singal, and gives described terminal by this broadcast signal broadcast, wherein, and the corresponding relation between the terminal iidentification comprising described terminal in described broadcast singal and the described beam sequences determined number;
Terminal receives described beam sequences number in the following manner:
Terminal determines the beam sequences number that the terminal iidentification of self is corresponding after receiving the broadcast singal of described macro base station broadcast from described broadcast singal.
In embodiments of the present invention, the corresponding relation comprised between terminal iidentification and the beam sequences determined number is issued by the form of broadcast, this information can be issued to multiple terminal simultaneously, and make each terminal according to the broadcast singal received, therefrom select the beam sequences number that the terminal iidentification of self is corresponding.
A kind of macro base station, described macro base station comprises:
Receiving element, for receiving the primary importance information that micro-base station reports, described primary importance information is the positional information of terminal relative to described micro-base station;
Positional information determining unit, for according to described micro-base station relative to the second place information of macro base station and described primary importance information, determine three positional information of described terminal relative to macro base station;
Beam sequences determining unit, for the corresponding relation between the beam sequences of wave beam that issues according to positional information and macro base station number, determines at least one beam sequences number corresponding with described 3rd positional information;
Issue unit, for the beam sequences determined number is notified described terminal, and issue described beam sequences number corresponding wave beam, make terminal according to the beam sequences number received, detect this beam sequences number corresponding wave beam, and feed back beam sequences number corresponding to a wave beam detecting;
Precoding unit, carries out pre-encode operation for determine corresponding precoding mode according to the beam sequences number of terminal feedback after.
In embodiments of the present invention, terminal, when carrying out beam scanning and detecting, only need detect several wave beams that macro base station issues for this terminal, can shorten the Scanning Detction time of terminal, reduces power consumption; Meanwhile, if the wave beam that macro base station issues for any two terminals is not overlapping, then without the need to being the orthogonal resource of this two terminal distribution, even if distribute multiplexing resource also interference can not be caused, effectively can reduce taking resource.
Preferably, described in issue unit, specifically for generating broadcast singal, and give described terminal by this broadcast signal broadcast, wherein, the corresponding relation between the terminal iidentification comprising described terminal in described broadcast singal and the described beam sequences determined number.
In embodiments of the present invention, the corresponding relation comprised between terminal iidentification and the beam sequences determined number is issued by the form of broadcast, this information can be issued to multiple terminal simultaneously, and make each terminal according to the broadcast singal received, therefrom select the beam sequences number that the terminal iidentification of self is corresponding.
A kind of micro-base station, described micro-base station comprises:
Positional information determining unit, for determining the primary importance information of terminal relative to described micro-base station;
Transmitting element, for reporting described primary importance information to macro base station.
Wave beam is issued and the beam sequences number of receiving terminal feedback to terminal in embodiments of the present invention by micro-base station, and then can the positional information of terminal according to a preliminary estimate.
Preferably, described micro-base station also comprises:
Wave beam issues unit, for issuing wave beam to terminal omnidirectional;
Receiving element, after the wave beam for issuing micro-base station in described terminal carries out Scanning Detction, receives the beam sequences number of a wave beam of described terminal feedback;
Positional information determining unit, specifically for the corresponding relation between the beam sequences of wave beam that issues according to positional information and micro-base station number, using the beam sequences of described terminal feedback number corresponding positional information as described primary importance information.
In embodiments of the present invention, micro-base station issues unit omnidirectional by wave beam and issues wave beam, so that terminal can Scanning Detction to part beam signal, and by Scanning Detction to the beam sequences number of described part wave beam feed back to micro-base station, thus, the positional information of terminal tentatively can be determined in micro-base station according to the beam sequences number received, so that macro base station determines the positional information of terminal further according to this positional information.
A kind of terminal, described terminal comprises:
Receiving element, for receiving at least one beam sequences number that macro base station issues;
Detecting unit, for according to the beam sequences number received, detects described beam sequences number corresponding wave beam;
Feedback unit, for feeding back beam sequences number corresponding to a wave beam detecting to macro base station.
In embodiments of the present invention, terminal, when carrying out beam scanning and detecting, only need detect several wave beams that macro base station issues for this terminal, can shorten the Scanning Detction time of terminal, reduces power consumption; Meanwhile, if the wave beam that macro base station issues for any two terminals is not overlapping, then without the need to being the orthogonal resource of this two terminal distribution, even if distribute multiplexing resource also interference can not be caused, effectively can reduce taking resource.
A system for precoding, described system comprises:
Macro base station, for receiving the primary importance information that micro-base station reports, described primary importance information is the positional information of terminal relative to described micro-base station; And according to described micro-base station relative to the second place information of macro base station and described primary importance information, determine three positional information of described terminal relative to macro base station; And the corresponding relation between the beam sequences of the wave beam issued according to positional information and macro base station number, determine at least one beam sequences number corresponding with described 3rd positional information; The beam sequences determined number is notified described terminal, and issues described beam sequences number corresponding wave beam; And carry out pre-encode operation after determining corresponding precoding mode according to the described sequence number received;
Micro-base station, for reporting described primary importance information to macro base station;
Terminal, for according to the beam sequences number received, detects this beam sequences number corresponding wave beam, and the beam sequences number of detect wave beam is fed back to macro base station.
In embodiments of the present invention, terminal, when carrying out beam scanning and detecting, only need detect several wave beams that macro base station issues for this terminal, can shorten the Scanning Detction time of terminal, reduces power consumption; Meanwhile, if the wave beam that macro base station issues for any two terminals is not overlapping, then without the need to being the orthogonal resource of this two terminal distribution, even if distribute multiplexing resource also interference can not be caused, effectively can reduce taking resource.
Preferably, described primary importance information is determined in the following manner:
Micro-base station omnidirectional issues wave beam, and after the wave beam that described terminal issues micro-base station carries out Scanning Detction, receives the beam sequences number of a wave beam of described terminal feedback;
Corresponding relation between the beam sequences of the wave beam that micro-base station issues according to positional information and micro-base station number, using the beam sequences of described terminal feedback number corresponding positional information as described primary importance information.
Wave beam is issued and the beam sequences number of receiving terminal feedback to terminal in embodiments of the present invention by micro-base station, and then can the positional information of terminal according to a preliminary estimate.
Preferably, the beam sequences determined number is notified described terminal by described macro base station, specifically comprises:
Described macro base station generates broadcast singal, and gives described terminal by this broadcast signal broadcast, wherein, and the corresponding relation between the terminal iidentification comprising described terminal in described broadcast singal and the described beam sequences determined number;
Terminal receives described beam sequences number in the following manner:
Terminal determines the beam sequences number that the terminal iidentification of self is corresponding after receiving the broadcast singal of described macro base station broadcast from described broadcast singal.
In embodiments of the present invention, the corresponding relation comprised between terminal iidentification and the beam sequences determined number is issued by the form of broadcast, this information can be issued to multiple terminal simultaneously, and make each terminal according to the broadcast singal received, therefrom select the beam sequences number that the terminal iidentification of self is corresponding.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the method step schematic diagram of the precoding in the embodiment of the present invention one;
The schematic diagram that Fig. 2 is macro base station in the embodiment of the present invention one, communicate between micro-base station and terminal;
Fig. 3 is the structural representation of the macro base station in the embodiment of the present invention two;
Fig. 4 is the structural representation of the micro-base station in the embodiment of the present invention three;
Fig. 5 is the structural representation of the terminal in the embodiment of the present invention four.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Base station is as the visual plant in wireless communication technology widespread deployment, and base station, according to the coverage of base station and transmitting power, is divided into macro base station and micro-base station by industry.In order to ensure the continuity of the network coverage, 3GPP(3rd Generation Partnership Project, third generation affiliate) propose the framework increasing several micro-base station ranges in macro base station coverage in standard, i.e. HetNet(HeterogeneousNetwork, heterogeneous network) framework.Embodiment involved in the present invention performs under a kind of like this framework of heterogeneous network, it should be noted that, in the present invention, terminal can communicate with macro base station, also can communicate with the micro-base station near macro base station.
Usually, in the process of precoding, macro base station directly communicates with terminal, to obtain the beam sequences number of the wave beam of terminal feedback.But omnidirectional issues wave beam due to macro base station, terminal is in order to carry out large-scale Scanning Detction, need open higher received power and scan for a long time, therefore the scan-type testing process power consumption of terminal can be caused high, and sweep time is long, postpones to macro base station feedback sequence number; And, when the multiple terminals in macro base station coverage are simultaneously at scan-type detection beam signal, in order to avoid interference, macro base station is the resource for received beam signal of each terminal distribution (can be frequency domain resource, also can be time-domain resource) need be orthogonal, therefore, when the terminal quantity in base station range can be caused more, the process of terminal scanning formula detection beam signal will take a large amount of resources.
In order to solve the problem, in precoding process involved in the present invention, the beam sequences number of the wave beam that macro base station issues and the corresponding relation of the positional information corresponding to each wave beam can be set up in advance, the corresponding relation of the beam sequences of the wave beam that micro-base station issues number and the positional information corresponding to each wave beam, and micro-base station is relative to the positional information of macro base station, so that according to the beam sequences of terminal feedback number, micro-base station determines that terminal reports macro base station relative to the positional information of micro-base station, again by macro base station according to the positional information of terminal relative to micro-base station, micro-base station is relative to the positional information of macro base station, determine the positional information of this terminal relative to macro base station, afterwards, macro base station is when issuing wave beam to this terminal, wave beam is issued without the need to omnidirectional, but according to the positional information of terminal relative to self, issue the beam sequences number corresponding wave beam of several wave beams corresponding to this positional information, make terminal when carrying out beam scanning and detecting, only need detect several wave beams that macro base station issues for this terminal, the Scanning Detction time of terminal can be shortened, reduce power consumption, meanwhile, if the wave beam that macro base station issues for any two terminals is not overlapping, then without the need to being the orthogonal resource of this two terminal distribution, even if distribute multiplexing resource also interference can not be caused, effectively can reduce taking resource.
Positional information involved by various embodiments of the present invention can comprise azimuth information and range information.
Be described in detail the present invention program below in conjunction with specific embodiment, need to illustrate all, the present invention is not limited to following examples.
Embodiment one:
The embodiment of the present invention one provides a kind of method of precoding, as shown in Figure 1, mainly comprises the following steps:
Step 101: macro base station receives the primary importance information that micro-base station reports, described primary importance information is the positional information of terminal relative to described micro-base station.
Particularly, micro-base station determines that the mode of described primary importance information can be:
First, micro-base station omnidirectional issues wave beam.
Then, the beam sequences number of detect wave beam is fed back to described micro-base station after carrying out Scanning Detction to the wave beam that micro-base station issues by terminal.
Wherein, terminal can be the maximum wave beam of signal to noise ratio that terminal detects to the beam sequences number corresponding wave beam of micro-base station feedback, or the wave beam that received power is maximum.
Finally, the corresponding relation between the beam sequences of the wave beam that micro-base station issues according to the positional information prestored and micro-base station number, determines the beam sequences number corresponding positional information of terminal feedback, and using this positional information of determining as described primary importance information.
It should be noted that, the beam sequences number that in the embodiment of the present invention, terminal is not limited to the wave beam issued according to micro-base station relative to the positional information of micro-base station is determined, alternate manner can also be utilized to determine, such as, by the mode determination terminal of the location pilot positional information relative to micro-base station.
With the macro base station shown in Fig. 2, corresponding relation between micro-base station and terminal, in the wave beam that the micro-base station shown in figure issues to terminal, only depict wherein two beam collections; In the wave beam that macro base station issues to terminal, depict only the beam collection that the part wave beam in beam sequences corresponding to terminal iidentification number is formed.Micro-base station can determine the primary importance information of terminal relative to micro-base station in the manner described above.
In this step 101, micro-base station, except report described primary importance information to macro base station except, also can report the micro-Base Station Identification of self and the terminal iidentification of described terminal to macro base station.
Step 102: macro base station relative to the second place information of macro base station and described primary importance information, determines three positional information of described terminal relative to macro base station according to described micro-base station.
Because macro base station has prestored the positional information of the multiple micro-base station of surrounding relative to self, then when in a step 101, after macro base station receives the primary importance information and micro-Base Station Identification and terminal iidentification that micro-base station reports, can first according to micro-Base Station Identification from the positional information of the micro-base station prestored relative to self, determine the second place information reporting micro-base station of described primary importance information relative to macro base station; Then, macro base station is again according to described primary importance information, and determine terminal that the described terminal iidentification that receives is corresponding the 3rd positional information relative to self, particularly, described macro base station according to triangulo operation method, can determine described 3rd positional information.
Step 103: the corresponding relation between the beam sequences of the wave beam that macro base station issues according to positional information and macro base station number, determines at least one beam sequences number corresponding with described 3rd positional information.
After macro base station determines three positional information of terminal relative to self, corresponding relation between the beam sequences of the wave beam that can issue according to the positional information prestored and macro base station number, determine at least one beam sequences number corresponding with the 3rd positional information, can represent with a beam sequences collection.
Step 104: the beam sequences determined number is notified described terminal by macro base station, and issue described beam sequences number corresponding wave beam.
In this step 104, the sequence number determined is notified described terminal by various ways by macro base station, and a kind of feasible advice method is:
First, macro base station generates broadcast singal, contains the corresponding relation between terminal iidentification and beam sequences number in described broadcast singal.
Then, macro base station broadcasts described broadcast singal.
Finally, after terminal receives described broadcast singal, according to the terminal iidentification of self, from described broadcast singal, inquire the beam sequences number corresponding with the terminal iidentification of self.
Step 105: described terminal, according to the beam sequences number received, detects this beam sequences number corresponding wave beam, and the beam sequences number of detect wave beam is fed back to macro base station.
In this step 105, terminal without the need to carrying out Scanning Detction wave beam as much as possible according to existing scheme, and only need detect that macro base station is to the beam sequences number corresponding wave beam self issued, and can shorten beam scanning detection time, reduces the power consumption of terminal.
When terminal scanning detects multiple wave beam, the beam sequences number of wave beam maximum to wave beam maximum for wherein signal to noise ratio, signal strength signal intensity or the maximum wave beam of received power can be fed back to macro base station.
Step 106: macro base station carries out pre-encode operation after determining corresponding precoding mode according to the described sequence number received.
Method described in the embodiment of the present invention one can be applicable in the several scenes under HetNet framework, and a kind of feasible scene is: when micro-base station because reasons such as loads, requires to reside in the scene of the terminal switch in micro-base station to macro base station.
In embodiments of the present invention, by setting up the beam sequences number of the wave beam that macro base station issues in advance respectively, the corresponding relation of the beam sequences of the wave beam that micro-base station issues number and the positional information corresponding to each wave beam, so that according to the beam sequences of terminal feedback number, micro-base station determines that terminal reports macro base station relative to the positional information of micro-base station, again by macro base station according to the positional information of terminal relative to micro-base station, and the micro-base station prestored is relative to the positional information of macro base station, determine the positional information of this terminal relative to macro base station, and issue the beam sequences number corresponding wave beam of several wave beams corresponding to this positional information, make terminal when carrying out beam scanning and detecting, only need detect several wave beams that macro base station issues for this terminal, the Scanning Detction time of terminal can be shortened, reduce power consumption, meanwhile, if the wave beam that macro base station issues for any two terminals is not overlapping, then without the need to being the orthogonal resource of this two terminal distribution, even if distribute multiplexing resource also interference can not be caused, effectively can reduce taking resource.
Corresponding to the method for the precoding that the embodiment of the present invention one provides, the embodiment of the present invention two, three, four additionally provides a kind of equipment of precoding.Following examples two, three, four introduce this equipment in detail.
Embodiment two:
As shown in Figure 3, be the concrete structure schematic diagram of macro base station in the embodiment of the present invention two, mainly comprise:
Receiving element 201, for receiving the primary importance information that micro-base station reports, described primary importance information is the positional information of terminal relative to described micro-base station.
Positional information determining unit 202, for according to described micro-base station relative to the second place information of macro base station and described primary importance information, determine three positional information of described terminal relative to macro base station.
Beam sequences determining unit 203, for the corresponding relation between the beam sequences of wave beam that issues according to positional information and macro base station number, determines at least one beam sequences number corresponding with described 3rd positional information.
Issue unit 204, for the beam sequences determined number is notified described terminal, and issue described beam sequences number corresponding wave beam, make terminal according to the beam sequences number received, detect this beam sequences number corresponding wave beam, and feed back beam sequences number corresponding to a wave beam detecting.
Wherein, described issue unit 204 specifically for: described macro base station generates broadcast singal, and give described terminal by this broadcast signal broadcast, and wherein, the corresponding relation between the terminal iidentification comprising described terminal in described broadcast singal and the described beam sequences determined number.
Precoding unit 205, carries out pre-encode operation for determine corresponding precoding mode according to the described sequence number received after.
Embodiment three:
As shown in Figure 4, be the concrete structure schematic diagram of base station micro-in the embodiment of the present invention three, mainly comprise:
Positional information determining unit 301, for determining the primary importance information of terminal relative to described micro-base station.
Transmitting element 302, for reporting described primary importance information to macro base station.
Preferably, described micro-base station can also comprise: wave beam issues unit 303, for issuing wave beam to terminal omnidirectional.
Receiving element 304, after the wave beam for issuing micro-base station in described terminal carries out Scanning Detction, receives the beam sequences number of a wave beam of described terminal feedback, and this beam sequences number is sent to described positional information determining unit 301.
Described positional information determining unit 301, specifically for the corresponding relation between the beam sequences of wave beam that issues according to positional information and micro-base station number, using the beam sequences number corresponding positional information that receives as described primary importance information.
Embodiment four:
As shown in Figure 5, be the concrete structure schematic diagram of terminal in the embodiment of the present invention four, mainly comprise: receiving element 401, detecting unit 402 and feedback unit 403,
Receiving element 401, for receiving at least one beam sequences number that macro base station issues.
Detecting unit 402, for according to the beam sequences number received, detects described beam sequences number corresponding wave beam.
Feedback unit 403, for feeding back beam sequences number corresponding to a wave beam detecting to macro base station.
Preferably, if micro-base station issues wave beam to described terminal omnidirectional, then described detecting unit 402, also for detecting the wave beam that micro-base station issues; Feedback unit 403, the beam sequences number that the wave beam also issued for the micro-base station detected to micro-base station feedback is corresponding.
Corresponding to the method for the precoding that the embodiment of the present invention one provides, the embodiment of the present invention five provides a kind of system of precoding.Following examples five introduce this system in detail.
Embodiment five:
As shown in Figure 2, the pre-coding system that the embodiment of the present invention five provides mainly comprises:
Macro base station, for receiving the primary importance information that micro-base station reports, described primary importance information is the positional information of terminal relative to described micro-base station; And according to described micro-base station relative to the second place information of macro base station and described primary importance information, determine three positional information of described terminal relative to macro base station; And the corresponding relation between the beam sequences of the wave beam issued according to positional information and macro base station number, determine at least one beam sequences number corresponding with described 3rd positional information; The beam sequences determined number is notified described terminal, issues described beam sequences number corresponding wave beam simultaneously; And carry out pre-encode operation after determining corresponding precoding mode according to the described sequence number received.
Preferably, described macro base station specifically generates broadcast singal, and gives described terminal by this broadcast signal broadcast, wherein, and the corresponding relation between the terminal iidentification comprising described terminal in described broadcast singal and the described beam sequences determined number.
Micro-base station, for reporting primary importance information to macro base station, described primary importance information is the positional information of terminal relative to described micro-base station.
Preferably, described micro-base station, also issues wave beam for omnidirectional, and after the wave beam that described terminal issues micro-base station carries out Scanning Detction, receives the beam sequences number of a wave beam of described terminal feedback; And the corresponding relation between the beam sequences of the wave beam to issue according to positional information and micro-base station number, using the beam sequences of described terminal feedback number corresponding positional information as described primary importance information.Such as, but the present invention is not limited to, by with the positional information of upper type determination terminal relative to micro-base station, alternate manner can also be utilized to determine, by the mode determination terminal of the location pilot positional information relative to micro-base station.
Terminal, for according to the beam sequences number received, detects this beam sequences number corresponding wave beam, and the beam sequences number of detect wave beam is fed back to macro base station.
Preferably, described terminal receives described beam sequences number in the following manner:
Terminal determines the beam sequences number that the terminal iidentification of self is corresponding after receiving the broadcast singal of described macro base station broadcast from described broadcast singal.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of 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 square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. a method for precoding, is characterized in that, described method comprises:
Macro base station receives the primary importance information that micro-base station reports, and described primary importance information is the positional information of terminal relative to described micro-base station;
Macro base station relative to the second place information of macro base station and described primary importance information, determines three positional information of described terminal relative to macro base station according to described micro-base station;
Corresponding relation between the beam sequences of the wave beam that macro base station issues according to positional information and macro base station number, determines at least one beam sequences number corresponding with described 3rd positional information;
The beam sequences determined number is notified described terminal by macro base station, and issue described beam sequences number corresponding wave beam, make terminal according to the beam sequences number received, detect this beam sequences number corresponding wave beam, and the beam sequences number of detect wave beam is fed back to macro base station;
Macro base station carries out pre-encode operation after determining corresponding precoding mode according to the described sequence number received.
2. the method for claim 1, is characterized in that, described primary importance information is determined in the following manner:
Micro-base station omnidirectional issues wave beam, and after the wave beam that described terminal issues micro-base station carries out Scanning Detction, receives the beam sequences number of a wave beam of described terminal feedback;
Corresponding relation between the beam sequences of the wave beam that micro-base station issues according to positional information and micro-base station number, using the beam sequences of described terminal feedback number corresponding positional information as described primary importance information.
3. the method for claim 1, is characterized in that, the beam sequences determined number is notified described terminal by described macro base station, specifically comprises:
Described macro base station generates broadcast singal, and gives described terminal by this broadcast signal broadcast, wherein, and the corresponding relation between the terminal iidentification comprising described terminal in described broadcast singal and the described beam sequences determined number;
Terminal receives described beam sequences number in the following manner:
Terminal determines the beam sequences number that the terminal iidentification of self is corresponding after receiving the broadcast singal of described macro base station broadcast from described broadcast singal.
4. a macro base station, is characterized in that, described macro base station comprises:
Receiving element, for receiving the primary importance information that micro-base station reports, described primary importance information is the positional information of terminal relative to described micro-base station;
Positional information determining unit, for according to described micro-base station relative to the second place information of macro base station and described primary importance information, determine three positional information of described terminal relative to macro base station;
Beam sequences determining unit, for the corresponding relation between the beam sequences of wave beam that issues according to positional information and macro base station number, determines at least one beam sequences number corresponding with described 3rd positional information;
Issue unit, for the beam sequences determined number is notified described terminal, and issue described beam sequences number corresponding wave beam, make terminal according to the beam sequences number received, detect this beam sequences number corresponding wave beam, and feed back beam sequences number corresponding to a wave beam detecting;
Precoding unit, carries out pre-encode operation for determine corresponding precoding mode according to the beam sequences number of terminal feedback after.
5. macro base station as claimed in claim 4, is characterized in that,
Describedly issuing unit, specifically for generating broadcast singal, and giving described terminal by this broadcast signal broadcast, wherein, the corresponding relation between the terminal iidentification comprising described terminal in described broadcast singal and the described beam sequences determined number.
6. a micro-base station, is characterized in that, described micro-base station comprises:
Positional information determining unit, for determining the primary importance information of terminal relative to described micro-base station;
Transmitting element, for reporting described primary importance information to macro base station.
7. micro-base station as claimed in claim 6, is characterized in that, described micro-base station also comprises:
Wave beam issues unit, for issuing wave beam to terminal omnidirectional;
Receiving element, after the wave beam for issuing micro-base station in described terminal carries out Scanning Detction, receives the beam sequences number of a wave beam of described terminal feedback;
Positional information determining unit, specifically for the corresponding relation between the beam sequences of wave beam that issues according to positional information and micro-base station number, using the beam sequences of described terminal feedback number corresponding positional information as described primary importance information.
8. a terminal, is characterized in that, described terminal comprises:
Receiving element, for receiving at least one beam sequences number that macro base station issues;
Detecting unit, for according to the beam sequences number received, detects described beam sequences number corresponding wave beam;
Feedback unit, for feeding back beam sequences number corresponding to a wave beam detecting to macro base station.
9. a system for precoding, is characterized in that, described system comprises:
Macro base station, for receiving the primary importance information that micro-base station reports, described primary importance information is the positional information of terminal relative to described micro-base station; And according to described micro-base station relative to the second place information of macro base station and described primary importance information, determine three positional information of described terminal relative to macro base station; And the corresponding relation between the beam sequences of the wave beam issued according to positional information and macro base station number, determine at least one beam sequences number corresponding with described 3rd positional information; The beam sequences determined number is notified described terminal, and issues described beam sequences number corresponding wave beam; And carry out pre-encode operation after determining corresponding precoding mode according to the described sequence number received;
Micro-base station, for reporting described primary importance information to macro base station;
Terminal, for according to the beam sequences number received, detects this beam sequences number corresponding wave beam, and the beam sequences number of detect wave beam is fed back to macro base station.
10. system as claimed in claim 9, it is characterized in that, described primary importance information is determined in the following manner:
Micro-base station omnidirectional issues wave beam, and after the wave beam that described terminal issues micro-base station carries out Scanning Detction, receives the beam sequences number of a wave beam of described terminal feedback;
Corresponding relation between the beam sequences of the wave beam that micro-base station issues according to positional information and micro-base station number, using the beam sequences of described terminal feedback number corresponding positional information as described primary importance information.
11. systems as claimed in claim 9, it is characterized in that, the beam sequences determined number is notified described terminal by described macro base station, specifically comprises:
Described macro base station generates broadcast singal, and gives described terminal by this broadcast signal broadcast, wherein, and the corresponding relation between the terminal iidentification comprising described terminal in described broadcast singal and the described beam sequences determined number;
Terminal receives described beam sequences number in the following manner:
Terminal determines the beam sequences number that the terminal iidentification of self is corresponding after receiving the broadcast singal of described macro base station broadcast from described broadcast singal.
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