CN108206713A - Beam forming in mimo systems - Google Patents
Beam forming in mimo systems Download PDFInfo
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- CN108206713A CN108206713A CN201611169450.9A CN201611169450A CN108206713A CN 108206713 A CN108206713 A CN 108206713A CN 201611169450 A CN201611169450 A CN 201611169450A CN 108206713 A CN108206713 A CN 108206713A
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- radio frequency
- base band
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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
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
-
- 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
-
- 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
- H04B7/0617—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 for beam forming
-
- 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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
The present invention provides a kind of multiple-in and multiple-out communication method in transmitter, including：Base band beam forming is carried out to lateral data flow to obtain longitudinal data stream；Radio frequency beam forming is carried out with to the longitudinal data stream.In addition, the present invention also provides corresponding transmitter, base station etc..
Description
Technical field
The present invention relates to the beam forming in wireless network more particularly in extensive mimo systems about wave
The method, apparatus and system of beam shaping.
Background technology
Multiple-input and multiple-output (multiple-input, multiple-output, MIMO) communication system uses at the transmitter and receiver of wireless network
Multiple antennas, so as to by using space diversity, improve signal performance (for example, spectrum efficiency, link reliability etc.).More specifically
Ground, under the premise of extra bandwidth or increase transmission power is not needed to, MIMO significantly increases data throughout and link model
It encloses.Extensive MIMO (M-MIMO) system is commonly known as using the large-scale antenna system of MIMO technology, they usually possess ratio
Its more service antenna of activated terminals number serviced.These additional antennas can will be measured and concentrate on smaller space region
Domain helps to improve handling capacity and radiation energy efficiency.M-MIMO is a kind of special feelings of multiuser MIMO (MU-MIMO)
Condition has the narrow transmission beam that can provide service for multiple users simultaneously.Other advantages of M-MIMO further include, cheap low work(
Rate component is widely used, shortens delay, simplifies medium access control (MAC) layer, the robustness deliberately interfered etc..
Verizon companies (are also referred to as in American tissue technical forum, the special 5G specifications discussed before studying 3GPP
), such as the V5G.211-213 about physical layer V5G.The extensive multiple-input, multiple-output (Massive MIMO or M-MIMO) of V5G are suitable
With radio frequency (RF) beam forming, to be directed to the layout of the millimeter wave of more than 6GHz (mmWave) frequency range and realization.
In China, mobile operator-China Mobile (CMCC) of the Ministry of Industry and Information Technology (MIIT) and Largest In China is all uncommon
It hopes and 5G tests is carried out first in below 6GHz (sub-6GHz) such as 3.5GHz frequency ranges.However, lack at present for 3.5GHz
M-MIMO solutions because existing beam-forming method is not particularly suited for 3.5GHz.
Although academia and business circles constantly study M-MIMO, the system design apart from optimization is also more distant
Far, the problem of many practical still needs to solve.
Invention content
According to the embodiment of first aspect disclosed by the invention, a kind of mimo communication side in transmitter is provided
Method, including：Base band beam forming is carried out to lateral data flow to obtain longitudinal data stream；With, to the longitudinal data stream carry out
Radio frequency beam shapes.
According to one embodiment, the weight that the weight of the base band beam forming is shaped with the radio frequency beam is designed to
Close to full base band beam-forming weights.
According to one embodiment, the transverse direction data flow includes N number of 1 data flow of layer, described to carry out base to lateral data flow
Band beam forming is included with obtaining the step of longitudinal data stream：Base band precoding is carried out to N number of 1 data flow of layer, obtains M groups
Antenna port data；The M groups antenna port data are transmitted to radio frequency from baseband layer 1, form M group longitudinal data streams；It is described
The step of carrying out radio frequency beam forming to longitudinal data stream includes：The M groups longitudinal data stream is subjected to radio frequency beam forming, shape
Into antenna data.
According to one embodiment, the M groups antenna port data include the first subgroup and the second subgroup, wherein, the first son
Antenna port data carrying in group falls into the data of the user of the first wave beam, and the antenna port data carrying in the second subgroup is fallen
Enter the data of the user of the second wave beam.
According to the embodiment of second aspect disclosed by the invention, a kind of transmitter for mimo communication is provided,
Including：First device is configured to carry out base band beam forming to lateral data flow to obtain longitudinal data stream；And second device,
It is configured to carry out radio frequency beam forming to the longitudinal data stream.
According to one embodiment, the weight that the weight of the base band beam forming is shaped with the radio frequency beam is designed to
Close to full base band beam-forming weights.
According to one embodiment, the transverse direction data flow includes N number of 1 data flow of layer, and the first device includes：First is single
Member is configured to carry out base band precoding to N number of 1 data flow of layer, obtains M group antenna port data；Second unit is configured to
The M groups antenna port data are transmitted to radio frequency from baseband layer 1, form M group longitudinal data streams；The second device configuration
For the M groups longitudinal data stream is carried out radio frequency beam forming, forms antenna data.
According to one embodiment, the M groups antenna port data include the first subgroup and the second subgroup, wherein, the first son
Antenna port data carrying in group falls into the data of the user of the first wave beam, and the antenna port data carrying in the second subgroup is fallen
Enter the data of the user of the second wave beam.
According to the third aspect disclosed by the invention, a kind of base station is provided, wherein, including aforementioned transmitter.
According to fourth aspect disclosed by the invention, a kind of mimo communication network is provided, wherein, including aforementioned base
It stands.
Compared with prior art, according to the method for the embodiment of the present invention, device or system has the following advantages：1. pass through by
Base band (number) beam forming is combined with radio frequency (simulation) beam forming, has had the advantage of the two concurrently；2. compatible to the full extent,
Existing V5G specifications are utilized；3. feasible M-MIMO solutions are provided for sub-6GHz.
Description of the drawings
By reading the detailed description made to non-limiting example made referring to the drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 shows a typical communication system being applicable according to the method for the embodiment of the present invention with device；
Fig. 2 is the general flow chart according to a kind of communication means of the embodiment of the present invention；
Fig. 3 is the schematical module frame chart according to a kind of transmitter of the embodiment of the present invention；
Fig. 4 is the system schematic of the beam forming in the multi-user MIMO system according to the embodiment of the present invention；
Fig. 5 is a kind of antenna pattern in the extensive mimo systems according to the embodiment of the present invention；
Fig. 6 is a kind of schematic diagram with the transmitter of beam forming according to the embodiment of the present invention；
Fig. 7 is the schematic diagram according to a kind of Anneta module of the embodiment of the present invention；
Fig. 8 a-8b are the simulation result schematic diagram according to the beam forming of the embodiment of the present invention.
The same or similar reference numeral represents the same or similar component in attached drawing.
Specific embodiment
It should be mentioned that some exemplary embodiments are described as before exemplary embodiment is discussed in greater detail
The processing described as flow chart or method.Although operations are described as the processing of sequence by flow chart, therein to be permitted
Multioperation can be by concurrently, concomitantly or be simultaneously carried out.In addition, the sequence of operations can be rearranged.
When its operations are completed, the processing can be terminated, it is also possible to have the additional step being not included in attached drawing.Separately
Outside, the processing can correspond to method, function, regulation, subroutine, subprogram etc..
Alleged within a context " computer equipment ", is referred to as " computer ", and referring to can be by running preset program
Or instruction performs the intelligent electronic device of the predetermined process process such as numerical computations and/or logical calculated, can include processing
Device and memory, instructed by the survival that prestores in memory of processor execution perform predetermined process process or by ASIC,
The hardware such as FPGA, DSP perform predetermined process process or are realized by said two devices combination.Computer equipment includes but unlimited
In server, PC, laptop, tablet computer, smart mobile phone etc..
The computer equipment includes user equipment and the network equipment.Wherein, the user equipment includes but not limited to electricity
Brain, smart mobile phone, PDA etc.；The network equipment includes but not limited to single network server, multiple network servers form
Server group or the cloud being made of a large amount of computers or network server based on cloud computing (Cloud Computing), wherein,
Cloud computing is one kind of Distributed Calculation, a super virtual computer being made of the computer collection of a group loose couplings.Its
In, the computer equipment can isolated operation realize the present invention, also can access network and by with other calculating in network
The present invention is realized in the interactive operation of machine equipment.Wherein, the network residing for the computer equipment include but not limited to internet,
Wide area network, Metropolitan Area Network (MAN), LAN, VPN network etc..
It should be noted that the user equipment, the network equipment and network etc. are only for example, other are existing or from now on may be used
The computer equipment or network that can occur such as are applicable to the present invention, should also be included within the scope of the present invention, and to draw
It is incorporated herein with mode.
Method (some of which is illustrated by flow) discussed hereafter usually can by hardware, software,
Firmware, middleware, microcode, hardware description language or its arbitrary combination are implemented.When with software, firmware, middleware or micro-
Code is come when implementing, to implement the program code of necessary task or code segment can be stored in machine or computer-readable
In medium (such as storage medium).(one or more) processor can implement necessary task.
Concrete structure and function detail disclosed herein are only representative, and are for describing the present invention
The purpose of exemplary embodiment.But the present invention can be implemented by many alternative forms, and should not be explained
Into being limited only by the embodiments set forth herein.
Although it should be understood that may have been used term " first ", " second " etc. herein to describe each unit,
But these units should not be limited by these terms.The use of these items is only for by a unit and another unit
It distinguishes.For example, in the case of the range without departing substantially from exemplary embodiment, it is single that first unit can be referred to as second
Member, and similarly second unit can be referred to as first unit.Term "and/or" used herein above include one of them or
The arbitrary and all combination of more listed associated items.
It should be understood that when a unit is referred to as " connecting " or during " coupled " to another unit, it can be straight
It connects and is connected or coupled to another unit or there may be a temporary location.In contrast, when a unit is referred to as
" when being directly connected " or " directly coupled " to another unit, then there is no a temporary locations.It should solve in a comparable manner
It releases and be used to describe other of the relationship between unit (such as " between being in ... " compared to " being directly in ... similar to word
Between ", " with ... it is neighbouring " compared to " with ... it is directly adjacent to " etc.).
Term used herein above is not intended to limit exemplary embodiment just for the sake of description specific embodiment.Unless
Context clearly refers else, otherwise, singulative used herein above "one", " one " also attempt to include plural number.Also
It should be understood that term " comprising " used herein above and/or "comprising" provide stated feature, integer, step, behaviour
Make, the presence of unit and/or component, and do not preclude the presence or addition of other one or more features, integer, step, operation,
Unit, component and/or a combination thereof.
It should further be mentioned that in some replaces realization modes, the function/action being previously mentioned can be according to different from attached
The sequence indicated in figure occurs.For example, depending on involved function/action, the two width figures shown in succession actually may be used
Substantially simultaneously to perform or can perform in a reverse order sometimes.
The present invention is described in further detail below in conjunction with the accompanying drawings.
In millimere-wave band, radio frequency beam forming LENs antennas or phased array antenna are come in antenna sub-module (sub-
Module wave beam is formed in).The quantity of RF transceiver (TRX) is much smaller than total antenna number.But in below 6GHz frequency ranges
(being hereinafter also referred to as sub-6GHz), since the antenna size of low-frequency range is larger, antenna number is fewer than the antenna number of millimeter wave very much.
Therefore, base band (BB) beam forming will use improved signal processing algorithm.
Base band beam forming is selected in 4G for 8 antennas and 20MHz bandwidth, but has been arrived in 5G, it will there are 64 even
The bandwidth of more antennas and up to 100MHz, in the product forward pass (Fronthaul) will be unable to provide support.
It below will be in the example embodiment for particularly hereinafter, describing the disclosure, that is, use big aerial array and M-MIMO
Operate the communication system to support beam forming gain.The disclosure can be applied to standard compatible communication system, such as and the third generation
What partner program (3GPP), IEEE 802.11 etc., the communication system of technical standard compatibility and support M-MIMO were operated
Non-standard compliant communication system.
Fig. 1 shows example communication system 100.Communication system 100 can be used for communication data.Communication system 100 can wrap
Include the evolved NodeB (eNB) 110 with overlay area 101, multiple user equipmenies (UE) 120 and backhaul network 130.
ENB110 can include can be by establishing uplink (dotted line) and/or downlink (solid line) connect to provide nothing with UE 120
Line access random component, such as base station, NodeB (NB), access point (AP), Home eNodeB, Microcell, relay node and its
He enables wireless equipment.UE 120 can include establishing the random component of wireless connection with eNB 110, for example signing is used
Family, mobile phone, mobile station (STA), terminal, user or other enable wireless equipment.Backhaul network 130 can be to allow in eNB
The random component or assembly set of data exchange are carried out between 110 and distal end (not shown).In some embodiments, communication system
100 can include various other wireless devices, such as relay point, low power nodes.It should be understood that although communication system
May be used for simplicity, can only show eNB and two UE here with multiple eNB of a large amount of UE communications.Such as figure
Shown in 1, eNB 110 can be communicated using M-MIMO with UE 120.In the communication system for using M-MIMO, hair that eNB is used
The quantity of antennas is by more than the quantity of UE that is serviced simultaneously, so as to realize that UE isolation and data are covered by beam forming gain
Lid.Typically, when the quantity of the eNB transmission antennas used is more than 8, it is believed that the eNB is using MMIMO.In general, with
The quantity of the transmission antenna of eNB increases, communication link (such as M-MIMO, multiuser MIMO (MU-MIMO)) and logical with UE
Letter can become to be more prone to establish.Transmission antenna can realize wider array of covering with the height ratio of UE serviced simultaneously, and send out
Antennas can obtain the handling capacity of bigger with the low-ratio of UE serviced simultaneously.Therefore, communication system can be by adjusting
Plan receives the quantity of the activation UE of simultaneous transmission, and covering is exchanged for by cost of handling capacity (vice versa).Particularly, system is believed
Breath (such as controlling information, scheduling information) is conventionally broadcasted to many UE in different spatial, it is accordingly required in particular to more
A broadcast channel keeps unified amplitude emission mode, so as to keep acceptable noise in whole coverage areas of cell
Than (SNR).Also, for no UE for carrying out initial random access procedure, network need not know their position；Therefore, extensively
Above-mentioned initial random access procedure can be simplified by broadcasting the large coverage of channel.Generally speaking, broadcast channel is in the complete of cell
Transmission is propagated in portion or substantially the whole of coverage area.On the contrary, unicast signal can be by spatial selectivity, such as by with it
The relatively low signal-to-noise ratio (SNR) of his position is cost, higher SNR is obtained in the position of expected receiver, so as to obtain wave beam
The performance advantage of shaping gain.In other words, unicast signal is to be sent to particular UE or one group to its marking signal
UE send or in other circumstances, subset from signal to all possible recipient send.
The embodiment of the present invention provides a kind of compound beam forming solution, in forward pass (fronthaul)
Radio frequency beam is shaped (simulation) under limitation to combine with base band beam forming (number).4G is different from using radio frequency beam forming,
Because in 4G, base band beam forming is only used, moreover, also as save forward pass capacity (FH capacity) and transmitting-receiving letter
The quantity of machine.According to " Hybrid Digital and Analog Beamforming written by Foad Sohrabi and Wei Yu
Design for Large-Scale Antenna Arrays " and the IEEE Journal of for being published in April, 2016
Theory in No. 3 text of volume 10 of Selected Topics in Signal Processing, invention disclosed by the invention
The invasive insight of people is found, if I/Q quantity or radio-frequency transmissions antenna number are used more than layer 1 (L1) (transverse direction) number of data streams
Twice, system design will be able to ensure that this beam forming solutions met realize the performance similar to full base band beam forming.
According to an embodiment of the invention, as shown in the flow of the method 2 in Fig. 2, in a step 220, the transmission of base station 120
Device handles lateral 1 data flow of layer with base band (number) beam forming, to obtain longitudinal data stream, then, in step S240,
Radio frequency beam forming is carried out to the longitudinal data stream of acquisition.In this way, it is provided for the selection of Baseband algorithms and the design of radio frequency beam
Preferable flexible design degree.Theoretically, CPRI should send the data of twice of the number of data streams of no less than layer 1 and come in compound system
Preferable performance is realized in system, therefore, in embodiment, considers that CPRI I/Q numbers are equal to 2 times of 1 number of data streams of layer.
Preferably, the weight of above-mentioned base band beam forming and the weight of radio frequency beam forming are designed to close to full base band
Beam-forming weights, with the overall performance for full base band beam forming of comparing.
Preferably, lateral data flow includes N number of 1 data flow of layer, lateral data flow is carried out in step 220 base band wave beam into
Shape is included with obtaining the step of longitudinal data stream：Base band precoding is carried out to N number of 1 data flow of layer, obtains M groups antenna port (AP)
Data；M group antenna port data are transmitted to radio frequency from baseband layer 1, form M group longitudinal data streams.
Preferably, radio frequency beam forming is carried out in step S240 to longitudinal data stream to include：M group longitudinal datas stream is carried out
Radio frequency beam shapes, and forms antenna data.
Preferably, above-mentioned M groups antenna port (AP) data include the first subgroup and the second subgroup, wherein, the first subgroup
In the carrying of antenna port data fall into the first wave beam user data, the antenna port data carrying in the second subgroup falls into
The data of the user of second wave beam.
Fig. 4 shows the compound beamforming system for MU-MIMO according to embodiments of the present invention.In actual product
In, base band beam forming is generally thought identical with the meaning of the digital beam-forming in experimental situation, and radio frequency beam shapes
It is identical with the meaning of the analog beam forming in experimental situation.In schematic in fig. 4, the quantity of data flow, forward pass capacity, penetrate
The quantity and antenna amount of frequency transceiver can be with normal definitions, and still there are the selections in many designs, can be designed that
Performance approaches system best and that complexity is suitable.
In the specification of V5G, the beam forming of 1 signal of layer for base band defines the CSI-RS of 16 interfaces.Or
In the specification of V5G, wave beam RS (BRS) is defined for radio frequency (simulation) beam forming.
Base station uses 128 antennas and 64 transmitting-receivings in China, the extensive mimo system of MIIT and CMCC hypothesis at present
Letter machine then, needs 16 data flows (layer) to obtain the handling capacity needs of peak value.Such antenna pattern is as shown in Figure 5.
According to one embodiment of present invention, forward pass uses 32 antenna ports, that is, 32 road I/Q data are from floor 1 to penetrating
Frequently, it is the half of digital scheme.Fig. 6 is to have the function of showing for the transmitter of beam forming according to a kind of of the embodiment of the present invention
It is intended to, wherein, the compound beam forming means being mentioned above are applied, there are 16 1 data flows of transverse direction/layer (0-15), are passed through
MU-MIMO moulds base band beam forming in the block obtains 32 groups of antenna port data (AP0-AP31).Wherein, base band precoding/
The weight of beam forming can be obtained or by being based on UL SRS reciprocities by the CSI-RS based on PMI/ZF
(reciprocity) EBB/ZF algorithms obtain.32 groups of antenna port data are then transmitted to radio frequency from baseband layer 1.It is penetrating
Frequency module by beam forming (ABF) of 32 groups of the AP data by simulation, obtains 8 road antenna datas, AD0-AD7.
The wave beam weight for representing wave beam mark is stored in advance in ABF, alternately wave beam.Have benefited from BRS, each antenna connects
Mouth both knows about the preferred wave beam marks of UE.
See a kind of Anneta module shown in fig. 7, antenna port 0-15 only needs carrying to fall into the user of wave beam mark A
Data, correspondingly, antenna port 16-31 only need carrying to fall into the data that wave beam identifies the user of B.By ABF, wave beam mark
The data that the data of A can identify B with wave beam is added, this causes each wave beam is identified to be made of all Longitudinal Antennas, allow wave beam
It designs more flexible.This also becomes full connection analog beam forming.Referring to Fig. 7, for example, AP Ox W_ABF0..7+AP16x
W_ABF64..71=AD 0..7, it is also the same to AP1 and AP17 etc..
In spatial domain, wave beam mark A and wave beam mark B are designed to mutually orthogonal.UE in wave beam mark A will not be by wave
The interference of UE in beam identification B, vice versa.UE in same wave beam mark realizes spatial reuse by MU-MIMO means.
As shown in Figure 8 a, Fig. 8 b then show wave beam mark A's and wave beam mark B to simulation result based on 3D beam patterns
Simulation result.It should be noted that further algorithm optimization and beam designing can bring the further change of the above results.
Fig. 3 shows a kind of transmitter 3 for mimo communication, including：First device 32 is configured to lateral number
Base band beam forming is carried out according to stream to obtain longitudinal data stream；With second device 34, it is configured to carry out radio frequency to longitudinal data stream
Beam forming.
Preferably, the weight of the weight of base band beam forming and radio frequency beam forming be designed to close to full base band wave beam into
Shape weight.
Preferably, lateral data flow includes N number of 1 data flow of (for example, aforementioned 16, flow 0-15) layer, first device 32
Including：First unit 322 is configured to carry out N number of 1 data flow of layer base band precoding, acquisition M groups (for example, aforementioned 32,
AP0-31) antenna port data；Second unit 324 is configured to M group antenna port data being transmitted to radio frequency, shape from baseband layer 1
Into M group longitudinal data streams；Second device 34 is configured to, and the M groups longitudinal data stream is carried out radio frequency beam forming, forms antenna
Data.
Preferably, M groups antenna port data include the first subgroup and the second subgroup, wherein, the antenna end in the first subgroup
Mouthful Deta bearer falls into the data of the user of the first wave beam, and the antenna port data carrying in the second subgroup falls into the second wave beam
The data of user.
It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example,
Application-specific integrated circuit (ASIC) can be used for each device of the present invention or any other is realized similar to hardware device.At one
In embodiment, software program of the invention can perform to realize steps described above or function by processor.Similarly, originally
The software program of invention can be stored in computer readable recording medium storing program for performing (including relevant data structure), for example, RAM is deposited
Reservoir, magnetic or CD-ROM driver or floppy disc and similar devices.In addition, hardware can be used in some steps or function of the present invention
It realizes, for example, as coordinating with processor so as to perform the circuit of each step or function.
It will be apparent to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
In terms of which, should it regard embodiment as exemplary, and be non-limiting, the scope of the present invention is by institute
Attached claim rather than above description limit, accordingly, it is intended to will fall in the meaning and scope of the equivalent requirements of the claims
Interior all changes include within the present invention.Any reference numeral in claim should not be considered as to the involved power of limitation
Profit requirement.Furthermore, it is to be understood that one word of " comprising " is not excluded for other units or step, odd number is not excluded for plural number.In system claims
The multiple units or device of statement can also be realized by a unit or device by software or hardware.First and second
Words is waited to be used to indicate names, and are not represented any particular order.
Although front is specifically shown and describes exemplary embodiment, it will be understood to those of skill in the art that
It is that in the case of the spirit and scope without departing substantially from claims, can be varied from terms of its form and details.Here
Sought protection illustrates in the dependent claims.
Claims (10)
1. a kind of multiple-in and multiple-out communication method in transmitter, including：
Base band beam forming is carried out to lateral data flow to obtain longitudinal data stream；With
Radio frequency beam forming is carried out to the longitudinal data stream.
2. according to the method described in claim 1, wherein, weight and the radio frequency beam forming of the base band beam forming
Weight is designed to close to full base band beam-forming weights.
3. according to the method described in claim 1, wherein, the transverse direction data flow includes N number of 1 data flow of layer, described to transverse direction
Data flow carries out base band beam forming and is included the step of longitudinal data stream with obtaining：
Base band precoding is carried out to N number of 1 data flow of layer, obtains M group antenna port data；
The M groups antenna port data are transmitted to radio frequency from baseband layer 1, form M group longitudinal data streams；
Described the step of carrying out radio frequency beam forming to longitudinal data stream, includes：
The M groups longitudinal data stream is subjected to radio frequency beam forming, forms antenna data.
4. according to the method described in claim 3, wherein, the M groups antenna port data include the first subgroup and the second subgroup,
Wherein, the antenna port data carrying in the first subgroup falls into the data of the user of the first wave beam, the antenna end in the second subgroup
Mouth Deta bearer falls into the data of the user of the second wave beam.
5. a kind of transmitter for mimo communication, including：
First device is configured to carry out base band beam forming to lateral data flow to obtain longitudinal data stream；With
Second device is configured to carry out radio frequency beam forming to the longitudinal data stream.
6. transmitter according to claim 5, wherein, weight and the radio frequency beam of the base band beam forming shape
Weight be designed to close to full base band beam-forming weights.
7. transmitter according to claim 5, wherein, the transverse direction data flow includes N number of 1 data flow of layer, and described first
Device includes：
First unit is configured to carry out base band precoding to N number of 1 data flow of layer, obtains M group antenna port data；
Second unit is configured to the M groups antenna port data being transmitted to radio frequency from baseband layer 1, forms M group longitudinal datas
Stream；
The second device is configured to, and the M groups longitudinal data stream is carried out radio frequency beam forming, forms antenna data.
8. transmitter according to claim 7, wherein, the M groups antenna port data include the first subgroup and the second son
Group, wherein, the carrying of antenna port data in the first subgroup falls into the data of the user of the first wave beam, the antenna in the second subgroup
Port data carrying falls into the data of the user of the second wave beam.
9. a kind of base station, wherein, including the transmitter as described in any one of claim 5 to 8.
10. a kind of communication system of multiple-input, multiple-output, wherein, including base station as claimed in claim 9.
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| PCT/IB2017/001690 WO2018109562A1 (en) | 2016-12-16 | 2017-12-18 | Beamforming in multiple-input multiple-output system |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130039445A1 (en) * | 2011-08-11 | 2013-02-14 | Samsung Electronics Co., Ltd. | Method and apparatus for determining analog beam in hybrid beam-forming system |
| US20140050280A1 (en) * | 2012-08-14 | 2014-02-20 | Samsung Electronics Co., Ltd | Multi-user and single user mimo for communication systems using hybrid beam forming |
| US20150188682A1 (en) * | 2013-12-26 | 2015-07-02 | Samsung Electronics Co., Ltd. | Hybrid zero-forcing beamforming method and apparatus |
| WO2015156496A2 (en) * | 2014-04-06 | 2015-10-15 | Lg Electronics Inc. | Method of determining a weight of a digital beamforming in a wireless communication system and apparatus therefor |
| CN105429686A (en) * | 2015-11-05 | 2016-03-23 | 江苏中兴微通信息科技有限公司 | Transmission device and method for separated type asymmetric hybrid beam formation |
| CN105453465A (en) * | 2013-08-06 | 2016-03-30 | 株式会社Ntt都科摩 | Radio base station apparatus and scheduling method |
| CN105634574A (en) * | 2013-06-08 | 2016-06-01 | 华为技术有限公司 | Pilot signal transmission method, base station and user equipment |
| CN105721033A (en) * | 2016-02-23 | 2016-06-29 | 清华大学 | Beam forming method and system for multi-user millimetre-wave communication system |
| WO2016168128A1 (en) * | 2015-04-15 | 2016-10-20 | Ping Liang | Hybrid beamforming multi-antenna wireless systems |
| CN106160809A (en) * | 2015-04-10 | 2016-11-23 | 上海贝尔股份有限公司 | The mixing method for precoding of multi-user multi-aerial system and device thereof |
-
2016
- 2016-12-16 CN CN201611169450.9A patent/CN108206713B/en active Active
-
2017
- 2017-12-18 WO PCT/IB2017/001690 patent/WO2018109562A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130039445A1 (en) * | 2011-08-11 | 2013-02-14 | Samsung Electronics Co., Ltd. | Method and apparatus for determining analog beam in hybrid beam-forming system |
| US20140050280A1 (en) * | 2012-08-14 | 2014-02-20 | Samsung Electronics Co., Ltd | Multi-user and single user mimo for communication systems using hybrid beam forming |
| CN105634574A (en) * | 2013-06-08 | 2016-06-01 | 华为技术有限公司 | Pilot signal transmission method, base station and user equipment |
| CN105453465A (en) * | 2013-08-06 | 2016-03-30 | 株式会社Ntt都科摩 | Radio base station apparatus and scheduling method |
| US20150188682A1 (en) * | 2013-12-26 | 2015-07-02 | Samsung Electronics Co., Ltd. | Hybrid zero-forcing beamforming method and apparatus |
| WO2015156496A2 (en) * | 2014-04-06 | 2015-10-15 | Lg Electronics Inc. | Method of determining a weight of a digital beamforming in a wireless communication system and apparatus therefor |
| CN106160809A (en) * | 2015-04-10 | 2016-11-23 | 上海贝尔股份有限公司 | The mixing method for precoding of multi-user multi-aerial system and device thereof |
| WO2016168128A1 (en) * | 2015-04-15 | 2016-10-20 | Ping Liang | Hybrid beamforming multi-antenna wireless systems |
| CN105429686A (en) * | 2015-11-05 | 2016-03-23 | 江苏中兴微通信息科技有限公司 | Transmission device and method for separated type asymmetric hybrid beam formation |
| CN105721033A (en) * | 2016-02-23 | 2016-06-29 | 清华大学 | Beam forming method and system for multi-user millimetre-wave communication system |
Non-Patent Citations (1)
| Title |
|---|
| FOAD SOHRABI AND WEI YU: "Hybrid Digital and Analog Beamforming Design for Large-Scale Antenna Arrays", 《IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING》 * |
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| WO2018109562A1 (en) | 2018-06-21 |
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