CN108736939A

CN108736939A - The method and apparatus of wave beam training

Info

Publication number: CN108736939A
Application number: CN201710238444.2A
Authority: CN
Inventors: 黄永明; 章建军; 李元杰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2018-11-02
Anticipated expiration: 2037-04-13
Also published as: CN108736939B

Abstract

An embodiment of the present invention provides a kind of methods and apparatus of wave beam training, this method includes that sending ending equipment obtains angle of departure code book, the angle of departure code book includes S straton angle of departure code books, the main lobe width of angle of departure wave beam training vector in each straton angle of departure code book is identical, wherein s straton angle of departure code books include 2^sA angle of departure wave beam training vector, any one angle of departure wave beam training vector corresponds to two angle of departure wave beam training vectors in s+1 straton angle of departure code books in s straton angle of departure code books, angle of departure wave beam training vector in the angle of departure code book is obtained by solving-optimizing problem, the constraints of the optimization problem includes the fluctuation constraint to the main lobe and secondary lobe of the angle of departure wave beam training vector and the constraint of the norm of the angle of departure wave beam training vector；Sending ending equipment sends the data that wave beam is trained using the angle of departure code book to receiving device.The embodiment of the present invention can improve wave beam alignment accuracy, lifting system performance.

Description

The method and apparatus of wave beam training

Technical field

The present embodiments relate to the communications fields, and more particularly, to the method and apparatus of wave beam training.

Background technology

Since millimeter-wave communication system has larger bandwidth, it is capable of providing the message transmission rate of several Gbps, thus is had There is boundless application prospect.On the one hand, the high wavelength of the frequency of millimeter-wave signal is short, and signal decaying is very serious, thus logical Communication distance is extremely limited with coverage area；On the other hand, due to signal wave length, it is possible to be arranged more in smaller region More antennas can improve communication distance using the array gain of aerial array and increase coverage area.

Millimeter-wave communication system depend on large-scale antenna array provide array gain, with improve communication validity with Reliability, so wave beam alignment must be carried out first in order to establish reliable communication link.But, on the one hand, higher antenna Array gain often requires that wave beam is very narrow；On the other hand, in the stage for establishing communication link, the signal-to-noise ratio of signal is received very It is low, realize that wave beam alignment is extremely difficult.Moreover, since antenna element number is more, the dimension of channel matrix is very big, this into One step increases the difficulty of wave beam alignment.

In order to realize high-precision wave beam alignment, to make full use of the array gain of aerial array.Need use very narrow Wave beam forming/mix vector, that is, wave beam training vector be trained, set with the angle of departure and receiving terminal that determine sending ending equipment Standby angle of arrival.

However, the wide fluctuation of the main lobe and secondary lobe of wave beam training vector in the prior art is larger, the hair for causing wave beam to be trained The angle of departure of sending end equipment and the angle of arrival of receiving device are difficult alignment, influence system performance.

Therefore, the wave beam alignment accuracy of wave beam training how is improved, system performance is improved, becomes urgent problem to be solved.

Invention content

The embodiment of the present invention provides a kind of method and apparatus of wave beam training, and this method can improve the wave beam of wave beam training Alignment accuracy improves system performance.

In a first aspect, providing a kind of method of transmission data, this method includes：

Sending ending equipment obtains angle of departure code book, which includes S straton angle of departure code books, each straton separation The main lobe width of angle of departure wave beam training vector in corner brace book is identical, wherein s straton angle of departure code books include 2^sA separation Angle wave beam training vector, also, any one angle of departure wave beam training vector corresponds to s+1 layers in s straton angle of departure code books Two angle of departure wave beam training vectors in sub- angle of departure code book, the angle of departure wave of any one in s straton angle of departure code books The main lobe width of beam training vector is that the main lobe of any one angle of departure wave beam training vector in s+1 straton angle of departure code books is wide 2 times of degree, the angle of departure wave beam training vector in the angle of departure code book are obtained by solving-optimizing problem, the optimization problem Constraints include the constraint of the fluctuation to the main lobe of the angle of departure wave beam training vector and secondary lobe and angle of departure wave beam instruction Practice the constraint of the norm of vector, S >=2,1≤s≤S；

The sending ending equipment sends the data that wave beam is trained using the angle of departure code book to receiving device.

Therefore, in the embodiment of the present invention by solve constraints include to the main lobe of the angle of departure wave beam training vector and The restricted problem of the fluctuation constraint of secondary lobe obtains wave beam training vector, can improve the main lobe for reducing wave beam training vector and side The fluctuation of the wide wave of valve, improves the alignment accuracy of the angle of departure of sending ending equipment and the angle of arrival of receiving device, lifting system Energy.

It should be understood that in embodiments of the present invention, angle of departure wave beam training vector is referred to as sending beam vectors, this point Digression wave beam training vector is corresponding with wave beam (being referred to as launching beam) is sent, the main lobe of angle of departure wave beam training vector Width is referred to as sending the main lobe width of wave beam.Wherein, the sum of main lobe width of each layer of wave beam training vector can be 360 degree, by first layer to S layers, the main lobe width of the wave beam training vector in each layer is sequentially reduced, and is referred to as wave beam The precision (resolution ratio) of training vector is higher and higher.The embodiment of the present invention is not limited to this.

It should be understood that in the embodiment of the present invention, sending ending equipment can obtain the angle of departure code book in advance, the angle of departure code book It can be that sending ending equipment determines, can also be what system determined.

In embodiments of the present invention after transmitting terminal gets angle of departure code book, can use the angle of departure code book carry out with Wave beam training between receiving device.

Specifically, the process of wave beam training includes：The sending ending equipment uses in the 1st layer in the angle of departure code book Two angle of departure wave beam training vectors send measuring signal to receiving device respectively；

The sending ending equipment receives the 1st feedback information of receiving device transmission, and the 1st feedback information is used to indicate this The 1st target angle of departure wave beam training vector in two angle of departure wave beam training vectors in 1st straton angle of departure code book, this 1 target angle of departure wave beam training vector is that two angle of departure wave beam training vectors are corresponding in the end equipment receive the 1st layer The angle of departure wave beam training vector corresponding to the strongest measuring signal of signal in measuring signal；

The sending ending equipment uses two in i+1 layer corresponding with the i-th target angle of departure wave beam training vector to detach Angle wave beam training vector respectively to receiving device send measuring signal, i=1,2 ..., n-1,1≤n≤S,

The sending ending equipment receives the i+1 feedback information of receiving device transmission, and the i+1 feedback information is for referring to Show the i+1 target angle of departure wave beam training vector in two angle of departure wave beam training vectors in the i+1 layer, the i+1 Target angle of departure wave beam training vector is that two angle of departure wave beam training vectors are corresponding in the i+1 layer that the end equipment receives The angle of departure wave beam training vector corresponding to the strongest measuring signal of signal in measuring signal；

The sending ending equipment is by the n-th corresponding point of target angle of departure wave beam training vector in the sub- angle of departure code book of n-th layer Digression is determined as the angle of departure of the sending ending equipment.

Optionally, as a kind of realization method, the angle of departure wave beam training vector in the angle of departure code book is to pass through solution What following optimization problem obtained：

Wherein, f indicates that angle of departure wave beam training vector, x indicate that the sending ending equipment sends the sine of the angle of departure of signal Value, ε indicate the maximum fluctuation of the main lobe and secondary lobe of f；Indicate the sampled point set in the main lobe of f,Indicate that x belongs to Sampled point in the main lobe of f,Indicate the sampled point set in the secondary lobe of f,Indicate that x belongs to the sampling in the secondary lobe of f Point；a_t(x) array steering vector is indicated, for uniform linear array, a_t(x) form is as follows：

Wherein, N_tIndicate the antenna number of the sending ending equipment, d_tIndicate the distance between the adjacent antenna of the sending ending equipment, λ Indicate that the sending ending equipment sends the wavelength of signal,Indicate a_t(x) amplitude of the projection on f,

| | f | | indicate f norm, C indicate | | f | | constraint threshold value, wherein the angle of departure in same straton angle of departure code book The value of the corresponding C of wave beam training vector is identical, and the value of the corresponding C of angle of departure wave beam training vector in different sublayers is not Together, the value of C is related with the antenna number of the transmitting terminal and ε, also, wave beam training vector corresponding C in s+1 layer separations angle is less than Or it is equal to the corresponding C of s layer separations angle wave beam training vector.

Optionally, as a kind of realization method, there is transition between the main lobe and secondary lobe of the angle of departure wave beam training vector Band.

Optionally, as a kind of realization method, k-th of angle of departure wave beam training vector of s straton angle of departure code books Intermediate zone is located at the 2k-1 angle of departure wave beam training vector or the 2k angle of departure wave beam of s+1 straton angle of departure code books In the main lobe section of training vector.

Therefore, the embodiment of the present invention by the intermediate zone of the angle of departure wave beam training vector of last layer by belonging to next layer The main lobe section of angle of departure wave beam training vector is avoided when true angle of departure x is located at intermediate zone, next layer of the angle of departure The inaccurate problem of wave beam training vector training can be next since next layer of main lobe width includes the intermediate zone Layer gets true wave beam training direction, and the mistake for improving wave beam training is aligned performance.

Optionally, as a kind of realization method, the sine value of the main lobe width of the wave beam training vector of the angle of departure code book Interval be [- 1,1].

It should be understood that the present invention takes the method for dividing sin function values ([- 1,1]), rather than drawn according in existing way Point domain ([- π ,-π) or [- pi/2, pi/2)) method.It is specifically, relatively flat in-pi/2 and pi/2 due to sin functions, In order to realize high-resolution, division points often comparatively dense.But when the point of division is than comparatively dense, it is susceptible to singularity, shadow Ring the performance of related algorithm.The embodiment of the present invention can be avoided singularity and be obtained unanimously using the mode for dividing [- 1,1] Wave beam is aligned performance.

Second aspect provides a kind of method of wave beam training, which is characterized in that including：

Receiving device receives the data for the wave beam training that sending ending equipment is sent using angle of departure code book, the separation corner brace School bag includes S layers of wave beam and trains sub- angle of departure code book, the main lobe of the angle of departure wave beam training vector in each straton angle of departure code book It is of same size, wherein s straton angle of departure code books include 2^sA angle of departure wave beam training vector, wherein s stratons detach corner brace Any one angle of departure wave beam training vector is divided into the training of two angle of departure wave beams in s+1 straton angle of departure code books in book Vector, the main lobe width of the angle of departure wave beam training vector of any one is the separation of s+1 stratons in s straton angle of departure code books 2 times of the main lobe width of any one angle of departure wave beam training vector in corner brace book, the angle of departure wave beam in the angle of departure code book Training vector is obtained by solving-optimizing problem, S >=2,1≤s≤S；

The receiving device carries out wave beam training according to the data that the wave beam is trained.

Specifically, when carrying out wave beam training, the transmitting end equipment uses tree way of search successively using the angle of departure code book The wave beam carried out between receiving device is trained.

For example, in embodiments of the present invention, when carrying out wave beam alignment training, using beam angle is wider (to differentiate first Rate is relatively low) angle of departure wave beam training vector be trained, to determine the rougher range where optimum beam.Secondly, make With the angle of departure wave beam training vector of beam angle relatively narrow (resolution ratio is higher), to determine the more accurate model where optimum beam It encloses.Again, using the angle of departure wave beam training vector of beam angle narrower (resolution ratio higher), more accurate wave beam model is determined It encloses.Until reaching required wave beam alignment accuracy.

In the embodiment of the present invention, by using the angle of departure code book of layered structure, and tree search algorithm is used, it can be very big Ground reduces the training expense of wave beam alignment.Compared with exhaustive search algorithm, the time that wave beam alignment needs is greatly reduced.

It is used in the 1st straton angle of departure code book in angle of departure code book for example, receiving device receives sending ending equipment The measuring signal that two angle of departure wave beam training vectors are sent respectively, wherein the angle of departure code book includes S layers of wave beam training son point The main lobe width of digression code book, the angle of departure wave beam training vector in each straton angle of departure code book is identical, wherein s stratons point Digression code book includes an angle of departure wave beam training vector, wherein any one angle of departure wave beam is instructed in s straton angle of departure code books Practice vector and be divided into two angle of departure wave beam training vectors in s+1 straton angle of departure code books, in s straton angle of departure code books The main lobe width of the angle of departure wave beam training vector of any one is any one angle of departure wave in s+1 straton angle of departure code books 2 times of the main lobe width of beam training vector, the angle of departure wave beam training vector in the angle of departure code book is asked by solving-optimizing What topic obtained, S >=2,1≤s≤S；

The receiving device sends the 1st feedback information to the sending ending equipment, and the 1st feedback information is used to indicate the 1st The 1st target angle of departure wave beam training vector in two angle of departure wave beam training vectors in straton angle of departure code book, the 1st mesh Mark angle of departure wave beam training vector is in the corresponding measuring signal of the 1st straton angle of departure code book that the receiving device receives Angle of departure wave beam training vector corresponding to the strongest measuring signal of signal；

The receiving device receive the sending ending equipment use it is corresponding with the i-th target angle of departure wave beam training vector i-th+ The measuring signal that two angle of departure wave beam training vectors in 1 layer are sent respectively, i=1,2 ..., n-1,1≤n≤S,

The receiving device sends i+1 feedback information to the sending ending equipment, which is used to indicate this I+1 target angle of departure wave beam training vector in two angle of departure wave beam training vectors in i+1 layer, the i+1 target Angle of departure wave beam training vector is the signal in the corresponding measuring signal of i+1 straton angle of departure code book that the end equipment receives Angle of departure wave beam training vector corresponding to strongest measuring signal.

Optionally, as a kind of realization method, the main lobe width of the angle of departure wave beam training vector of the angle of departure code book The interval of sine value is [- 1,1].

It should be understood that in embodiments of the present invention, when receiving terminal has mutiple antennas, training the angle of departure of transmitting terminal The angle of arrival of receiving terminal can also be trained simultaneously.

In the embodiment of the present invention, the angle of arrival code book of receiving terminal is identical as the structure of angle of departure code book of transmitting terminal, is also S A (or S layers) subcode book.It should be understood that the embodiment of the present invention in, the angle of arrival wave beam in the angle of arrival code book of receiving terminal train to The design of amount can also equally be set using the design method of angle of departure wave beam training vector in the angle of departure code book of above-mentioned transmitting terminal Meter, design formula all fours, difference lies in the sines for the angle of arrival that the x in above-mentioned formula is indicated to the receiving device signal Value.F indicates that angle of arrival wave beam training vector, other parameters are determined by the antenna array structure of receiving device.In order to avoid weight It answers, herein not reinflated detailed description.

Optionally, as a kind of realization method, which receives sending ending equipment and uses in angle of departure code book The measuring signal that two angle of departure wave beam training vectors in 1st straton angle of departure code book are sent respectively, including：

The receiving device using two angle of arrival wave beams in the 1st straton angle of arrival code book in angle of arrival code book train to Amount is received sending ending equipment and is trained using two angle of departure wave beams in the 1st straton angle of departure code book in angle of departure code book respectively The measuring signal that vector is sent respectively, wherein the angle of arrival code book includes S straton angle of arrival code books, and each straton reaches corner brace The main lobe width of angle of arrival wave beam training vector in book is identical, wherein s straton angle of arrival code books include 2^sA angle of arrival wave Beam training vector, wherein any one angle of arrival wave beam training vector corresponds to s+1 stratons in s straton angle of arrival code books Two angle of arrival wave beam training vectors in angle of arrival code book, the angle of arrival wave beam of any one in s straton angle of arrival code books The main lobe width of training vector is the main lobe width of any one angle of arrival wave beam training vector in s+1 straton angle of arrival code books 2 times；Angle of arrival wave beam training vector in the angle of arrival code book is obtained by solving-optimizing problem, and S >=2,1≤s≤ S；

This method further includes：

The receiving device determine the 1st target angle of departure wave beam training vector and the 1st target angle of arrival wave beam train to Amount, wherein the 1st target angle of departure wave beam training vector and the 1st target angle of arrival wave beam training vector, are the receiving terminal respectively Equipment uses the 1st straton in the 1st straton angle of arrival code book received by two angle of arrival wave beam training vectors to detach corner brace The angle of departure wave beam training vector and angle of arrival wave beam corresponding to the strongest measuring signal of signal in the corresponding measuring signal of book Training vector；

The receiving device receive the sending ending equipment use it is corresponding with the i-th target angle of departure wave beam training vector i-th+ The measuring signal that two angle of departure wave beam training vectors in 1 layer are sent respectively, including：

The receiving device uses i+1 layer corresponding with the i-th target angle of arrival wave beam training vector in angle of arrival code book Two angle of arrival wave beam training vectors receive the sending ending equipment use and are instructed with the i-th target angle of departure wave beam in sub- angle of arrival code book Practice the measuring signal that two angle of departure wave beam training vectors in the corresponding i+1 layer of vector are sent respectively,

This method further includes：

The receiving device determines the i+1 target angle of departure wave beam training vector and i+1 target angle of arrival wave beam instruction Practice vector, wherein the i+1 target angle of departure wave beam training vector and i+1 target angle of arrival wave beam training vector are respectively The receiving device uses the i-th straton received by two angle of arrival wave beam training vectors in the i-th straton angle of arrival code book It angle of departure wave beam training vector corresponding to the strongest measuring signal of signal in the corresponding measuring signal of angle of departure code book and arrives Up to angle wave beam training vector；

The receiving device is arrived the n-th target angle of arrival wave beam training vector in the sub- angle of arrival code book of n-th layer is corresponding The angle of arrival of the receiving device is determined up to angle.

The third aspect provides a kind of sending ending equipment, any possibility for executing above-mentioned first aspect, first aspect Realization method in method.Specifically, which includes the unit for executing the above method.

Fourth aspect provides a kind of receiving device, any possibility for executing above-mentioned second aspect, second aspect Realization method in method.Specifically, which includes the unit for executing the above method.

5th aspect, provides a kind of sending ending equipment, which includes processor and memory, the memory For storing computer program, which executes above-mentioned first party for executing the computer program stored in the memory Face, first aspect any possible realization method in method.

6th aspect, provides a kind of receiving device, which includes processor and memory, the memory For storing computer program, which executes above-mentioned second party for executing the computer program stored in the memory Face, second aspect any possible realization method in method.

7th aspect, provides a kind of computer-readable medium, for storing computer program, which includes The instruction of the method in any possible realization method for executing first aspect or first aspect.

Eighth aspect provides a kind of computer-readable medium, and for storing computer program, which includes The instruction of the method in any possible realization method for executing second aspect or second aspect.

Description of the drawings

Fig. 1 is the schematic diagram of the applicable communication system of the embodiment of the present invention.

Fig. 2 is the applicable another communication system schematic diagram of the embodiment of the present invention.

Fig. 3 is the schematic flow chart of the method for wave beam training according to an embodiment of the invention.

Fig. 4 is the codebook structure schematic diagram of the embodiment of the present invention.

Fig. 5 is the fluctuation schematic diagram of the main lobe and secondary lobe of the angle of departure wave beam training vector of the embodiment of the present invention.

Fig. 6 is that the main lobe of the angle of departure wave beam training vector of the embodiment of the present invention and secondary lobe divide schematic diagram.

Fig. 7 is the amplitude response schematic diagram of the angle of departure wave beam training vector of the embodiment of the present invention.

Fig. 8 is the simulation result schematic diagram of the embodiment of the present invention.

Fig. 9 is the schematic block diagram of sending ending equipment according to an embodiment of the invention.

Figure 10 is the schematic block diagram of receiving device according to an embodiment of the invention.

Figure 11 is the schematic block diagram of sending ending equipment according to another embodiment of the present invention.

Figure 12 is the schematic block diagram of receiving device according to another embodiment of the present invention.

Specific implementation mode

Below in conjunction with attached drawing, the technical solution in the application is described.

The term " component " that uses in the present specification, " module ", " system " etc. for indicate computer-related entity, Hardware, firmware, the combination of hardware and software, software or software in execution.For example, component can be but not limited to, handling Process, processor, object, executable file, execution thread, program and/or the computer run on device.It transports on the computing device Capable application and computing device can be component.One or more components can reside in process and/or execution thread, component It can be located on a computer and/or be distributed between 2 or more computers.In addition, these components can be deposited from above The various computer-readable mediums for containing various data structures execute.Component can be for example according to one or more packets (such as the data from two components interacted with local system, distributed system and/or internetwork another component, such as Pass through the internet of signal and other system interactions) signal communicated by locally and/or remotely process.

In embodiments of the present invention, which includes hardware layer, operates in the operating system layer on hardware layer, and Operate in the application layer on operating system layer.The hardware layer includes CPU, memory management unit (Memory Management Unit, MMU) and the hardware such as memory (also referred to as memory).The operating system can be that any one or more passes through process reality The computer operating system of existing business processing, for example, linux system, Unix system, android system, iOS system or Windows systems etc., the present invention are simultaneously not particularly limited.The application layer include browser, address list, word processor, immediately The applications such as communication software.It should be understood that computer equipment listed above is merely illustrative, the present invention is simultaneously not particularly limited.

The scheme of the embodiment of the present invention can be applied to various millimeter-wave communication systems, for example, the side of the embodiment of the present invention Case can be applied to existing cellular communication system, such as global system for mobile telecommunications (Global System for Mobile Communication, GSM), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), long term evolution (Long Term Evolution, LTE), CDMA (Code Division Multiple Access, CDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplexs (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS) etc..For another example the scheme of the embodiment of the present invention can be applied to wireless local Net (Wireless Local Area Network, WLAN), and to can be adapted for WLAN currently employed for the embodiment of the present invention International Power electronic engineering association (Institute of Electrical and Electronics Engineers, IEEE) Any one agreement in 802.11 serial protocols.WLAN may include one or more basic service sets (Basic Service Set, BSS), the network node that basic service is concentrated include access point (Access Point, AP) and website (station, STA).IEEE 802.11ad introduce personal basic service set (Personal Basic Service on the basis of original BSS Set, PBSS) and personal basic service set control node (PBSS Control Point, PCP).Each individual's basic service set Can include an AP/PCP and multiple websites for being associated with the AP/PCP.

In the embodiment of the present invention, sending ending equipment is referred to as initiating end equipment, and receiving device is referred to as answering Answer equipment.The embodiment of the present invention is not limited to this.

Sending ending equipment and receiving device can be the network equipment or terminal device in embodiments of the present invention,

Specifically, in embodiments of the present invention, terminal device be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, movement station, mobile station, remote station, remote terminal, mobile device, user terminal, Terminal, wireless telecom equipment, user agent or user apparatus.Terminal device can be WLAN (Wireless Local Area Networks, WLAN) in website (STAION, ST), can be cellular phone, wireless phone, session initiation protocol (Session Initiation Protocol, SIP) phone, wireless local loop (Wireless Local Loop, WLL) It stands, personal digital assistant (Personal Digital Assistant, PDA), the handheld device with wireless communication function, count It calculates equipment or is connected to other processing equipments, mobile unit, wearable device and the future 5G networks of radio modem In terminal device.

The network equipment can be the access point (ACCESS POINT, AP) in WLAN, the base station (Base in GSM or CDMA Transceiver Station, BTS), it can also be the base station (NodeB, NB) in WCDMA, can also be the evolution in LTE Type base station (Evolutional Node B, eNB or eNodeB) either relay station or access point or mobile unit, wearable The network equipment in equipment and future 5G networks.

Fig. 1 is the schematic diagram of the applicable communication system of the embodiment of the present invention.The communication system can be with any one of the above Cellular network communicating system.As shown in Figure 1, the communication system 100 includes network side equipment 102, network side equipment 102 may include Mutiple antennas group.Each antenna sets may include mutiple antennas, for example, an antenna sets may include antenna 104 and 106, it is another A antenna sets may include antenna 108 and 110, and additional group may include antenna 112 and 114.Each antenna sets are shown in Fig. 1 2 antennas, however more or fewer antennas can be used for each group.Network side equipment 102 can include additionally transmitter Chain and receiver chain, it will appreciated by the skilled person that they may each comprise sent and received with signal it is relevant more A component (such as processor, modulator, multiplexer, demodulator, demultiplexer or antenna etc.).

Network side equipment 102 can be communicated with multiple terminal devices (such as terminal device 116 and terminal device 122).So And, it will be understood that network side equipment 102 can be logical with any number of terminal device similar to terminal device 116 or 122 Letter.Terminal device 116 and 122 can be such as cellular phone, smart phone, portable computer, handheld communication devices, hand-held meter Calculate equipment, satellite radio, global positioning system, PDA and/or arbitrary for what is communicated on wireless communication system 100 Other suitable equipment.

As shown in Figure 1, terminal device 116 is communicated with antenna 112 and 114, wherein antenna 112 and 114 passes through forward link 118 send information to terminal device 116, and receive information from terminal device 116 by reverse link 120.In addition, terminal device 122 communicate with antenna 104 and 106, and wherein antenna 104 and 106 sends information by forward link 124 to terminal device 122, and By reverse link 126 information is received from terminal device 122.

For example, in frequency division duplex (Frequency Division Duplex, FDD) system, for example, forward link 118 It is available with different frequency bands used in reverse link 120, forward link 124 it is available with used in reverse link 126 not Same frequency band.

For another example in time division duplex (Time Division Duplex, TDD) system and full duplex (Full Duplex) In system, common frequency band, forward link 124 and reverse link 126 can be used can be used for forward link 118 and reverse link 120 Common frequency band.

It is designed to the every group of antenna communicated and/or region is known as the sector of network side equipment 102.For example, can be by day Line group is designed as and the terminal equipment in communication in the sector of 102 overlay area of network side equipment.Before network side equipment 102 passes through During being communicated respectively with terminal device 116 and 122 to link 118 and 124, the transmitting antenna of network side equipment 102 The signal-to-noise ratio of forward link 118 and 124 can be improved using beam forming.In addition, with network side equipment by individual antenna to The mode that its all terminal device sends signal is compared, and utilizes beam forming to associated coverage in network side equipment 102 When the terminal device 116 and 122 of middle random dispersion sends signal, the mobile device in neighboring community can be by less interference.

In given time, network side equipment 102, terminal device 116 or terminal device 122 can be that wireless communication sends dress It sets and/or radio communication receiver.When sending out data, radio communication transmitter can encode data for passing It is defeated.Specifically, radio communication transmitter can obtain (such as generate, from other communication devices receive or preserve in memory Deng) to be sent to by channel radio communication receiver certain amount data bit.This data bit may include In the transmission block (or multiple transmission blocks) of data, transmission block can be segmented to generate multiple code blocks.

Fig. 2 is the applicable another communication system schematic diagram of the embodiment of the present invention.Communication system as shown in Figure 2 can be The system of wlan system, Fig. 2 includes one or more AP/PCP201 and one or more STA202, and Fig. 2 is with an AP/ For PCP and two STA.It can be carried out wireless communication by various standards between AP/PCP201 and STA202.Wherein, AP/ Multi-user multiple input multiple output technology (Multi-User Multiple-Input may be used between PCP201 and STA202 Multiple-Output, MU-MIMO) it carries out wireless communication.

It is stated that, the wide fluctuation of main lobe and secondary lobe of existing wave beam training vector is larger, leads to the transmission trained above The angle of departure of end equipment and the angle of arrival of receiving device are difficult alignment, influence system performance.

In view of the above problems, the embodiment of the present invention dexterously proposes a kind of method of wave beam training, can improve reduction The fluctuation of the wide wave of main lobe and secondary lobe of wave beam training vector, improves the angle of departure of sending ending equipment and the angle of arrival of receiving device Alignment accuracy, lifting system performance.

Hereinafter, for the ease of understanding and illustrating, it is non-limiting as example, the method that the wave beam of the application is trained is existed Implementation procedure and action in communication system illustrate.

Fig. 3 is the schematic flow chart of the method for wave beam training according to an embodiment of the invention.Side as shown in Figure 3 Method can be applied in above-mentioned various communication systems.Specifically, method 300 shown in Fig. 3 includes：

310, sending ending equipment obtains angle of departure code book, which includes S straton angle of departure code books, each straton The main lobe width of angle of departure wave beam training vector in angle of departure code book is identical, wherein s straton angle of departure code books include 2^sIt is a Angle of departure wave beam training vector, also, any one angle of departure wave beam training vector is divided into s straton angle of departure code books Two angle of departure wave beam training vectors in s+1 straton angle of departure code books, the separation of any one in s straton angle of departure code books The main lobe width of angle wave beam training vector is the master of any one angle of departure wave beam training vector in s+1 straton angle of departure code books 2 times of valve width；Angle of departure wave beam training vector in the angle of departure code book is obtained by solving-optimizing problem, the optimization The constraints of problem includes the fluctuation constraint to the main lobe and secondary lobe of the angle of departure wave beam training vector and the angle of departure wave The constraint of the norm of beam training vector, S >=2,1≤s≤S.

It should be understood that code book division above-mentioned in the embodiment of the present invention can be the division in domain, i.e., above-mentioned main lobe Width refers to the angle value of main lobe.Optionally, the division of above-mentioned code book can also be the division in Beam Domain, i.e., above-mentioned main lobe Width refers to the sine value of the angle of main lobe.The embodiment of the present invention is not limited to this.

For example, as another embodiment, the sine of the main lobe width of the angle of departure wave beam training vector of the angle of departure code book The interval of value is [- 1,1], i.e. sin function values.

It should be understood that the present invention takes the method for dividing sin function values ([- 1,1]), rather than according to Definition of Division domain ([- π ,-π) or [- pi/2, pi/2)) method.Specifically, relatively flat in-pi/2 and pi/2 due to sin functions, in order to realize High-resolution, division points often comparatively dense.But when the point of division is than comparatively dense, it is susceptible to singularity, influence related calculation The performance of method.The embodiment of the present invention can be avoided singularity and be obtained consistent wave beam alignment using the mode for dividing [- 1,1] Performance.

Hereinafter, expansion explanation is carried out so that code book is divided using Beam Domain as an example, but the embodiment of the present invention is not limited to this.

Optionally, as another embodiment, the angle of departure wave beam training vector in the angle of departure code book be by solve with What lower optimization problem obtained：

| | f | | indicate f norm, C indicate | | f | | constraint threshold value, wherein the angle of departure in same straton angle of departure code book The value of the corresponding C of wave beam training vector is identical, and the value of the corresponding C of angle of departure wave beam training vector in different sublayers is not Together, the factors such as the value of C and the antenna number of the transmitting terminal and ε are related, but have following rule, s+1 layer separations angle The corresponding C of wave beam training vector is less than or equal to the corresponding C of s layer separations angle wave beam training vector.

Multi_layer extraction corner brace book is proposed in the method for the wave beam training of the embodiment of the present invention, per in straton angle of departure code book Angle of departure wave beam training vector have different resolution ratio, i.e., different main lobe widths.It, can be with when carrying out wave beam alignment training The angle of departure wave beam training vector of beam angle wider (resolution ratio is relatively low) is used to be trained first, to determine optimum beam institute Rougher range.Secondly, using the angle of departure wave beam training vector of beam angle relatively narrow (resolution ratio is higher), with determination More accurate range where optimum beam.Again, it is trained using the angle of departure wave beam of beam angle narrower (resolution ratio higher) Vector determines more accurate beam area.Until reaching required wave beam alignment accuracy.In the embodiment of the present invention by using The angle of departure code book of layered structure, and tree search algorithm is used, it can greatly reduce the training expense of wave beam alignment.With limit Searching algorithm is compared, and the time that wave beam alignment needs is greatly reduced.

Since sending and receiving end may be mobile, and scatterer is also random distribution in space, therefore is highly desirable to Obtain consistent wave beam alignment performance.But since the angle of departure wave beam training vector in existing angle of departure code book is in main lobe And/or the fluctuation in secondary lobe is larger, is difficult to realize preferable wave beam and is aligned performance.

By solving constraints include main lobe and secondary lobe to the angle of departure wave beam training vector in the embodiment of the present invention The restricted problem of fluctuation constraint obtain wave beam training vector, the main lobe for reducing wave beam training vector can be improved and secondary lobe is wide The fluctuation of wave improves the alignment accuracy of the angle of departure of sending ending equipment and the angle of arrival of receiving device, lifting system performance.

The specific mistake that the angle of departure wave beam training vector in the angle of departure code book is determined in the embodiment of the present invention is described below Journey.

Fig. 4 is combined to describe the concrete structure of the angle of departure code book in the embodiment of the present invention first.As shown in figure 4, the separation Corner brace school bag includes S straton angle of departure code books, wherein the first straton angle of departure code book includes 2 angle of departure wave beam training vectors, the Two straton angle of departure code books include 4 angle of departure wave beam training vectors, and s straton angle of departure code books include 2^sA angle of departure wave beam The main lobe width of training vector, the angle of departure wave beam training vector in each straton angle of departure code book is identical, the s straton angles of departure One angle of departure wave beam training vector of the angle of departure wave beam training vector in code book is divided into s+1 straton angle of departure code books Angle of departure wave beam training vector in two angle of departure wave beam training vectors, for example, the kth in s straton angle of departure code books A vector changes the 2k-1 being divided into s+1 straton angle of departure code books and the 2k vector.For example, the second straton angle of departure code book In second vector, be divided into third in third straton angle of departure code book and the 4th vector.

Assuming that desired wave beam alignment accuracy is 1/N, wherein i.e. N=2ⁿ(n is positive integer).In order to realize this target, need Want n training stage, it is assumed that S=n, wherein s-th of training stage corresponding sub- angle of departure code book isS training stage packet The S sub- angle of departure code books contained are denoted asThe sub- angle of departure code book used for the s stagesWherein include 2^sA angle of departure wave beam training vector, the main lobe width of each angle of departure wave beam training vector is identical (as above to scheme different gray colors Shown in block).This 2^sA angle of departure wave beam training vector constitutes 2^s-1A angle of departure wave beam training vector pair, is denoted asB-th of angle of departure wave beam training vector is to including 2 vectors, i.e.,(subscript L and R Left and right is indicated respectively).Angle of departure wave beam training vector pairWith unique angle of departure (Angle of Departure, AoD) subintervalIt is associated,

The subintervals AoDFurther it is divided into 2 smaller subintervalsWithIt is not difficult to obtainWithAssociation Angle of departure wave beam training vector be respectivelyWithObviouslyWith

By tree search algorithm, for Wave beam forming vectorIf x is derived from main lobe section (i.e.), then a_t(x) existOn projection amplitude be 1；If x is derived from secondary lobe section (i.e.), then a_t(x) existOn be projected as 0.Wherein, a_t(x) it indicates array steering vector, enables N_TIndicate the antenna number of transmitting terminal array, d_tIndicate that the distance between adjacent antenna, λ indicate Signal wavelength, for even linear array, a_t(x) concrete form is as follows：

Mathematically, above-mentioned design requirement can be expressed as follows：

Know that the above problem is no solution by the related mathematical theory such as harmonic analysis.And using to utilize in currently existing scheme has Limit sampled point brings above-mentioned formula into and determines angle of departure wave beam training vector by way of solving equationTherefore, acquisition The fluctuation of the main lobe and secondary lobe of angle of departure wave beam training vector is larger, and intermediate zone performance/characteristic can not also ensure.

In embodiments of the present invention, in order to obtain satisfied solution, as another embodiment, as shown in Figure 5：It can be in main lobe The intermediate zone of very little is set between secondary lobe, and minimizes main lobe and the fluctuation ε in secondary lobe.

It enablesWithIt indicates to have added the new main lobe and secondary lobe divided after intermediate zone respectively, then above-mentioned design requirement can To be modeled as following optimization problem：

Since the constraint number of above-mentioned optimization problem is noncountable infinite multiple, in order to solve, need main lobe (i.e.) and secondary lobe is (i.e.Sampling, to obtain limited multiple constraints.NoteWithFor the discrete point set of sampling, then on It states optimization problem and is restated as following form：

It should be noted that the property for solving the solution that above-mentioned optimization problem obtains differs larger with desired property, specifically Ground, due toFor continuum, wherein there is unlimited number of point, to corresponding constraint also have it is unlimited number of, when solution It needs to sample continuum, obtains the optimization problem of limited constraint.Remember that discrete sampling point set isWherein,WithThe sampling point set in the sampling point set and secondary lobe in main lobe is indicated respectively.Obviously, whenWhen, accordinglyIt is smaller.But whenIt is correspondingMay be very big, with the phase The target of prestige is on the contrary, thus cause larger performance loss.That is still there may be larger fluctuations at non-sampled point. Therefore, the embodiment of the present invention increases the limit of the norm to angle of departure wave beam training vector by introducing new constraints It is fixed, it is smaller in the norm of angle of departure wave beam training vector, when being, for example, less than default constraint threshold value, though x deviate sampled point or At non-sampled point, the fluctuation of corresponding main lobe and secondary lobe is still smaller.Therefore, after introducing the new constraints, new is excellent Change problem is expressed as follows：

Without loss of generality, remove subscript and subscript, and willWithIt is denoted as respectivelyWithIndicate main lobe and secondary lobe Corresponding sampling point set, then above-mentioned optimization problem can be write as again：

In this way, by solving above-mentioned optimization problem, you can obtain desired angle of departure wave beam training vector.

Specifically, for above-mentioned optimization problem, different methods can be used to solve, such as the concave-convex planning of constraint (constraint concave convex programming, CCCP).The embodiment of the present invention is not limited to this.

Further, as another embodiment, the intermediate zone of s layers of k-th of angle of departure wave beam training vector is located at s In+1 layer of the 2k-1 angle of departure wave beam training vector or the main lobe section of 2k angle of departure wave beam training vector.

In other words, the intermediate zone of the angle of departure wave beam training vector of last layer belongs to next layer of angle of departure wave beam training The main lobe section of vector.

Specifically, in the embodiment of the present invention, consider (or equivalently, conventional using conventional filter bag setting method Binary level angle of departure codebook structure), the setting pair of the intermediate zone of arbitrary fixed angle of departure wave beam training vector is not considered The influence that the corresponding wave beam training intermediate zone of next layer divides, and further to being accidentally aligned the influence of probability.But in reality In, if optimal beam direction is located at intermediate zone, wave beam alignment performance still has larger loss.Although at this time big Consistent wave beam alignment performance can be realized on partial section, but still has larger gap with expected performance.On in short, State to exist in scheme and ignore the defect of excessive band, to further increase wave beam alignment accuracy be correctly aligned probability and have it is certain It influences.

Potential problem for ease of understanding, and propose corresponding solution, it is exemplified below.Without loss of generality, false If true beam direction sin (θ) is located exactly in the left half-court of intermediate zone (- δ, δ), i.e.,According to tree search algorithm, in order to determine that true beam direction is located in section [- 1,0] Still in [0,1], angle of departure wave beam training vector pair is usedIt is detected, whereinWithMain lobe be respectively [- 1,0] and [0,1].Compare useWithThe amplitude of obtained observation signal, if using angle of departure wave beam training vector? The amplitude of the observation signal arrived, which is more than, to be usedThe amplitude of obtained observation signal, then it is assumed that true beam direction is located at section In [- 1,0], otherwise it is assumed that beam direction is located in [0,1].

When due to not obtaining antenna array gain, signal-to-noise ratio (Signal Noise Ratio, SNR) relatively low and intermediate zone It is undesirable, so as to causeCorresponding reception signal is larger.According to tree search algorithm, in order to obtain the wave beam of higher precision Direction needs to use angle of departure wave beam training vector pairMake further training.Due to,WithMain lobe point Not Wei [δ, 0.5- δ] and [0.5+ δ, 1], do not include true beam direction, thus the performance of wave beam alignment be it is uncontrollable, I.e. performance can not ensure.Moreover, in the next training stage, similar problem still exists, to be difficult finally Obtain true beam direction.

More than solving the problems, such as, the present invention proposes new main lobe-secondary lobe-intermediate zone division methods.Specifically, it needs Repartition sub- angle of departure code bookMain lobe-secondary lobe-intermediate zone of middle angle of departure wave beam training vector.Such as Fig. 6 institutes Show, by taking angle of departure wave beam training vector in the second straton angle of departure code book as an example, for the angle of departure code book of other levels, operation It is similar, is omitted herein.Angle of departure wave beam training vector pairCoverage area originally is [δ, 1], now extends it and covers Lid ranging from [- δ, 1], makes that it includes angle of departure wave beam training vectors pair in the sub- angle of departure code book of the first orderTransition Band [- δ, δ].Main lobe-secondary lobe routinely-intermediate zone division methods determine againWithMain lobe, respectively [- δ, 0.5- δ] [δ+0.5,1].Similarly, angle of departure wave beam training vector pair is extendedOriginal coverage area is simultaneously repartitioned WithMain lobe, for example extendCoverage area [- 1 ,-δ] originally is [- δ, 1], makes that it includes the separation of first order Angle of departure wave beam training vector pair in corner brace bookIntermediate zone [- δ, δ].

Without loss of generality, the still above example illustrates the effect of transition tape handling proposed by the present invention.Assuming that true wave beam side It is located exactly to sin (θ) in the left half-court of intermediate zone (- δ, δ), i.e.,It is calculated according to tree search Method uses angle of departure wave beam training vector pair firstIt is detected, it is assumed thatCorresponding reception signal is larger.According to Next tree search algorithm needs to use angle of departure wave beam training vector pairMake further training.Note that due to In new splitting schemeWithMain lobe be respectively [- δ, 0.5- δ] and [0.5+ δ, 1], including first layer angle of departure wave beam instruction Practice the intermediate zone [- δ, δ] of vector pair, still include true beam direction, to which wave beam alignment performance is controllable.It is similar Ground can analyze the performance of other level angle of departure wave beam training vectors pair.

320, which carries out wave beam training using the angle of departure code book.

In other words, which sends the data that wave beam is trained using the angle of departure code book to receiving device. The receiving device carries out the wave beam between the sending ending equipment according to the data that the wave beam is trained and trains.

Specifically, which is successively carried out and receiving device using the angle of departure code book using tree way of search Between wave beam training.

For example, the sending ending equipment first use the angle of departure code book in the 1st layer in two angle of departure wave beams train to Amount sends measuring signal to receiving device respectively；

For example, finally the angle of departure of determining transmitting terminal can be the corresponding master of the n-th target angle of departure wave beam training vector The intermediate angle angle value of valve width.For example, the corresponding main lobe width of the n-th target angle of departure wave beam training vector is 10-14 degree, then The angle of departure can be 12 degree.

It is described below in 320, when receiving terminal has mutiple antennas, transmitting terminal and receiving terminal train transmitting terminal simultaneously The concrete scheme of the angle of departure and the angle of arrival of receiving terminal.

Specifically, the receiving device, which receives sending ending equipment, uses the 1st straton angle of departure code book in angle of departure code book In the measuring signal that sends respectively of two angle of departure wave beam training vectors, including：

The receiving device using two angle of arrival wave beams in the 1st straton angle of arrival code book in angle of arrival code book train to Amount is received sending ending equipment and is trained using two angle of departure wave beams in the 1st straton angle of departure code book in angle of departure code book respectively The measuring signal that vector is sent respectively,

Wherein, the angle of arrival code book of receiving terminal is identical as the structure of angle of departure code book of transmitting terminal, i.e. the angle of arrival code book Including S straton angle of arrival code books, the main lobe width of the angle of arrival wave beam training vector in each straton angle of arrival code book is identical, In s straton angle of arrival code books include 2^sA angle of arrival wave beam training vector, wherein any one in s straton angle of arrival code books A angle of arrival wave beam training vector correspond to s+1 straton angle of arrival code books in two angle of arrival wave beam training vectors, s layers The main lobe width of any one angle of arrival wave beam training vector is arbitrary in s+1 straton angle of arrival code books in sub- angle of arrival code book 2 times of the main lobe width of one angle of arrival wave beam training vector；Angle of arrival wave beam training vector in the angle of arrival code book is logical Cross the acquisition of solving-optimizing problem, S >=2,1≤s≤S；

In 320, can also include：

The receiving device determine the 1st target angle of departure wave beam training vector and the 1st target angle of arrival wave beam train to Amount, wherein the 1st target angle of departure wave beam training vector and the 1st target angle of arrival wave beam training vector, are the receiving terminal respectively Equipment uses the 1st straton in the 1st straton angle of arrival code book received by two angle of arrival wave beam training vectors to detach corner brace The angle of departure wave beam training vector and angle of arrival wave beam corresponding to the strongest measuring signal of signal in the corresponding measuring signal of book Training vector.

That is, the sending ending equipment using two wave beam training vectors in the 1st straton angle of departure code book respectively to Receiving terminal sends measuring signal, and receiving device is connect using two wave beam training vectors in the 1st straton angle of arrival code book respectively Above-mentioned measuring signal is received, in this way, receiving device will obtain 4 measuring signals, then, receiving device is from 4 measuring signals In determine the strongest measuring signal of signal strength, by the corresponding angle of departure wave beam training vector of the strongest measuring signal It is determined as the 1st target angle of departure wave beam training vector and the training of the 1st target angle of arrival wave beam with angle of arrival wave beam training vector Vector.

In 320, can also include：

That is, the sending ending equipment using two angle of departure wave beams in the i+1 straton angle of departure code book train to Amount sends measuring signal to receiving terminal respectively, and receiving device uses two arrival in i+1 straton angle of arrival code book respectively Angular amount receives above-mentioned measuring signal, in this way, receiving device will obtain 4 measuring signals, then, receiving device is from obtaining 4 measuring signals in determine the strongest measuring signal of signal strength, by the corresponding separation of the strongest measuring signal Angle wave beam training vector and angle of arrival wave beam training vector are determined as the i+1 target angle of departure wave beam training vector and i+1 Target angle of arrival wave beam training vector.

Finally, when reaching required wave beam alignment accuracy.The sending ending equipment will be in the sub- angle of departure code book of n-th layer The corresponding angle of departure of n-th target angle of departure wave beam training vector is determined as the angle of departure of the sending ending equipment.The receiving device The corresponding angle of arrival of the n-th target angle of arrival wave beam training vector in the sub- angle of arrival code book of n-th layer is determined as the receiving terminal to set Standby angle of arrival.

For example, it is assumed that transmitting terminal is identical as the antenna number of receiving terminal, 64 or 256 are taken as, corresponding training stage number Respectively 6 and 8.Consider that even linear array, channel model can be expressed as：

Wherein, H indicates channel model, N_T,N_RThe antenna number sent and received is indicated respectively；β indicates path loss, takes and returns One change value 1；L indicates number of path, and single diameter channel, i.e. L=1 are considered in emulation；φ, θ indicate that AoD and AoA, value are [0,2 respectively π] on equally distributed stochastic variable；a_t,a_rTransmission/receiving terminal aerial array steering vector is indicated respectively.

According to the angle of departure wave beam training vector designed in above-mentioned 310, the angle of departure wave beam in the embodiment of the present invention is trained First separation in angle of departure wave beam training vector pair and third straton angle of departure code book in vectorial first straton angle of departure code book Angle wave beam training vector is as shown in Figure 7 to amplitude response.It can be seen from figure 7 that since the embodiment of the present invention uses wave beam side The thought approached to figure, the angle of departure wave beam training vector designed with optimisation technique have the following advantages that：In main lobe and secondary lobe Fluctuation it is very small, amplitude response is very flat；Intermediate zone is very narrow.

It is 64 for sending and receiving end antenna number, if desired wave beam alignment accuracy is 1/64, angle of departure wave beam training vector Intermediate zone width be set as 2/64, since intermediate zone is handled, final achievable alignment accuracy is 2/64.If estimation Error between beam direction and true beam direction is more than 2/64, then it is assumed that wave beam alignment errors.For sending and receiving end antenna Number is 256, if desired wave beam alignment accuracy is 1/256, the transition band width of angle of departure wave beam training vector is set as 2/256, Corresponding final achievable alignment accuracy is 2/256.If the mistake between the beam direction and true beam direction of estimation Difference is more than 2/256, then it is assumed that wave beam alignment errors.For above two situation, wave beam is aligned simulation result such as Fig. 8 of performance It is shown.

It can be obtained from the simulation result of Fig. 8：The amplitude of the angle of departure wave beam training vector of design of the embodiment of the present invention is rung Should be very flat, flat amplitude response characteristic ensure that consistent wave beam alignment performance, and high-precision wave beam pair may be implemented Homogeneous energy.And the present invention takes new main lobe-secondary lobe-intermediate zone division methods, so as to obtain controllable wave beam alignment Performance, and consistent performance can also be obtained in intermediate zone.Since intermediate zone have passed through special processing so that realizing While high-precision wave beam is aligned, the mistake alignment probability of wave beam alignment is also very low.

The method that the wave beam training of the embodiment of the present invention is described above in conjunction with Fig. 1 to Fig. 8, it should be noted that Fig. 1 to Fig. 6 Example just for the sake of helping skilled in the art to understand the embodiment of the present invention, and the embodiment of the present invention have to be limited to institute The concrete numerical value or concrete scene of illustration.Those skilled in the art are according to the example of given Fig. 1 to Fig. 6, it is clear that Ke Yijin The modification or variation of the various equivalences of row, such modification or variation are also fallen into the range of the embodiment of the present invention.

The sending ending equipment that the embodiment of the present invention is described below in conjunction with Fig. 9 and 11 describes this hair in conjunction with Figure 10 and Figure 12 The receiving device of bright embodiment.

Fig. 9 shows the schematic block diagram of sending ending equipment 900 according to the ... of the embodiment of the present invention, specifically, such as Fig. 9 institutes Show, which includes：Processing unit 910 and Transmit-Receive Unit 920.

Specifically, for the processing unit 910 for obtaining angle of departure code book, which includes S stratons separation corner brace The main lobe width of book, the angle of departure wave beam training vector in each straton angle of departure code book is identical, wherein s stratons detach corner brace School bag includes an angle of departure wave beam training vector, also, any one angle of departure wave beam training vector in s straton angle of departure code books Two angle of departure wave beam training vectors in corresponding s+1 straton angle of departure code books, any one in s straton angle of departure code books Angle of departure wave beam training vector main lobe width be in s+1 straton angle of departure code books any one angle of departure wave beam train to 2 times of the main lobe width of amount, the angle of departure wave beam training vector in the angle of departure code book are obtained by solving-optimizing problem, The constraints of the optimization problem includes the fluctuation constraint to the main lobe and secondary lobe of the angle of departure wave beam training vector, and this point The constraint of the norm of digression wave beam training vector, S >=2,1≤s≤S；The Transmit-Receive Unit 920 be used for using the angle of departure code book to Receiving device sends the data of wave beam training.

Optionally, as another embodiment, there is intermediate zone between the main lobe and secondary lobe of the angle of departure wave beam training vector.

Optionally, as another embodiment, the mistake of k-th of angle of departure wave beam training vector of s straton angle of departure code books Cross the 2k-1 angle of departure wave beam training vector or the 2k angle of departure wave beam instruction that band is located at s+1 straton angle of departure code books In the main lobe section for practicing vector.

Optionally, as another embodiment, the main lobe width of the angle of departure wave beam training vector of the angle of departure code book is just The interval of string value is [- 1,1].

It should be understood that sending ending equipment 900 shown in Fig. 9 can realize sending ending equipment involved in Fig. 3 embodiments of the method Each process.The operation and/or function of modules in sending ending equipment 900, respectively in order to realize the method in Fig. 3 implement Corresponding flow in example.For details, reference can be made to the descriptions in above method embodiment, and to avoid repeating, the appropriate detailed description that omits is retouched herein It states.

Figure 10 shows the schematic block diagram of receiving device 1000 according to the ... of the embodiment of the present invention, specifically, such as Figure 10 Shown, which includes：Processing unit 1010 and Transmit-Receive Unit 1020.

Specifically, the Transmit-Receive Unit 1020 is used to receive what sending ending equipment was trained using the wave beam that angle of departure code book is sent Data, the angle of departure code book include that S layers of wave beam train sub- angle of departure code book, the angle of departure wave beam in each straton angle of departure code book The main lobe width of training vector is identical, wherein s straton angle of departure code books include 2^sA angle of departure wave beam training vector, wherein Any one angle of departure wave beam training vector is divided into two in s+1 straton angle of departure code books in s straton angle of departure code books A angle of departure wave beam training vector, the main lobe of the angle of departure wave beam training vector of any one is wide in s straton angle of departure code books Degree is 2 times of the main lobe width of any one angle of departure wave beam training vector in s+1 straton angle of departure code books, the separation corner brace Angle of departure wave beam training vector in book is obtained by solving-optimizing problem, S >=2,1≤s≤S；The processing unit 1010 Data for being trained according to the wave beam carry out wave beam training.

It should be understood that receiving device shown in Fig. 10 can realize each of receiving device involved in Fig. 3 embodiments of the method A process.The operation and/or function of modules in receiving device 1000, respectively in order to realize the method in Fig. 3 implement Corresponding flow in example.For details, reference can be made to the descriptions in above method embodiment, and to avoid repeating, the appropriate detailed description that omits is retouched herein It states.

Figure 11 shows the schematic block diagram of sending ending equipment 1100 according to the ... of the embodiment of the present invention.Specifically, such as Figure 11 Shown, which includes：Processor 1110 and transceiver 1120, processor 1110 are connected with transceiver 1120, Optionally, which further includes memory 1130, and memory 1130 is connected with processor 1110, wherein processor 1110, it is communicated by internal connecting path between memory 1130 and transceiver 1120, transmits control and/or data letter Number.The memory 1130 can be used for store instruction, which is used to execute the instruction of the memory 1130 storage, control Transceiver 1120 processed transmits and receives information or signal, and instruction of the controller 1110 in executing memory 1130 can complete above-mentioned figure Each process of sending ending equipment involved in 3 embodiments of the method.

Figure 12 shows the schematic block diagram of receiving device 1200 according to the ... of the embodiment of the present invention.Specifically, such as Figure 12 Shown, which includes：Processor 1210 and transceiver 1220, processor 1210 are connected with transceiver 1220, Optionally, which further includes memory 1230, and memory 1230 is connected with processor 1210, wherein processing It is communicated by internal connecting path between device 1210, memory 1230 and transceiver 1220, transmits control and/or data letter Number.The memory 1230 can be used for store instruction, which is used to execute the instruction control of the memory 1230 storage Transceiver 1220 processed transmits and receives information or signal, and instruction of the controller 1210 in executing memory 1230 can complete above-mentioned figure Each process of receiving device involved in 3 embodiments of the method.

It should be noted that the above-mentioned embodiment of the method for the embodiment of the present invention can be applied in processor, or by processor reality It is existing.Processor may be a kind of IC chip, the processing capacity with signal.During realization, the above method is implemented Each step of example can be completed by the integrated logic circuit of the hardware in processor or the instruction of software form.Above-mentioned place It can be general processor, digital signal processor (Digital Signal Processor, DSP), special integrated electricity to manage device Road (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic, Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general Processor can be microprocessor or the processor can also be any conventional processor etc..In conjunction with institute of the embodiment of the present invention The step of disclosed method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware in decoding processor And software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only In the storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The storage medium is located at The step of memory, processor reads the information in memory, the above method is completed in conjunction with its hardware.

It is appreciated that the memory in the embodiment of the present invention can be volatile memory or nonvolatile memory, or It may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory (Read- Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), the read-only storage of erasable programmable Device (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or Flash memory.Volatile memory can be random access memory (Random Access Memory, RAM), be used as external high Speed caching.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static RAM (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate SDRAM, DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links Dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus random access memory (Direct Rambus RAM, DR RAM).It should be noted that the memory of system and method described herein be intended to including but not limited to these and The memory of any other suitable type.

It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment A particular feature, structure, or characteristic includes at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction " in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific feature, knots Structure or characteristic can in any suitable manner combine in one or more embodiments.It should be understood that in the various implementations of the present invention In example, size of the sequence numbers of the above procedures is not meant that the order of the execution order, and the execution sequence of each process should be with its work( It can determine that the implementation process of the embodiments of the invention shall not be constituted with any limitation with internal logic.

In addition, the terms " system " and " network " are often used interchangeably herein.The terms " and/ Or ", only a kind of incidence relation of description affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, it can be with table Show：Individualism A exists simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, typicallys represent front and back Affiliated partner is a kind of relationship of "or".

It should be understood that in embodiments of the present invention, " B corresponding with A " indicates that B is associated with A, and B can be determined according to A.But It should also be understood that determining that B is not meant to determine B only according to A according to A, B can also be determined according to A and/or other information.

Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This A little functions are implemented in hardware or software actually, depend on the specific application and design constraint of technical solution.Specially Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not It is considered as beyond the scope of this invention.

It is apparent to those skilled in the art that for convenience of description and succinctly, foregoing description is The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit, Only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can be with In conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed Mutual coupling, direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit or lead to Letter connection can also be electricity, mechanical or other form connections.

The unit illustrated as separating component may or may not be physically separated, and be shown as unit Component may or may not be physical unit, you can be located at a place, or may be distributed over multiple networks On unit.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the embodiment of the present invention 's.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also It is that each unit physically exists alone, can also be during two or more units are integrated in one unit.It is above-mentioned integrated The form that hardware had both may be used in unit is realized, can also be realized in the form of SFU software functional unit.

Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can be with It is realized with hardware realization or firmware realization or combination thereof mode.It when implemented in software, can be by above-mentioned function Storage in computer-readable medium or as on computer-readable medium one or more instructions or code be transmitted.Meter Calculation machine readable medium includes computer storage media and communication media, and wherein communication media includes convenient for from a place to another Any medium of a place transmission computer program.Storage medium can be any usable medium that computer can access.With For this but it is not limited to：Computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disc storages, disk Storage medium or other magnetic storage apparatus or can be used in carry or store with instruction or data structure form expectation Program code and can be by any other medium of computer access.In addition.Any connection appropriate can become computer Readable medium.For example, if software is using coaxial cable, optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or such as The wireless technology of infrared ray, radio and microwave etc is transmitted from website, server or other remote sources, then coaxial electrical The wireless technology of cable, optical fiber cable, twisted-pair feeder, DSL or such as infrared ray, wireless and microwave etc is included in affiliated medium In fixing.As used in the present invention, disk (Disk) and dish (disc) include compressing optical disc (CD), laser disc, optical disc, number to lead to With optical disc (DVD), floppy disk and Blu-ray Disc, the usually magnetic replicate data of which disk, and dish is then with laser come optical duplication Data.Above combination above should also be as being included within the protection domain of computer-readable medium.

In short, the foregoing is merely the preferred embodiment of technical solution of the present invention, it is not intended to limit the present invention's Protection domain.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in Within protection scope of the present invention.

Claims

1. a kind of method of wave beam training, which is characterized in that including：

Sending ending equipment obtains angle of departure code book, and the angle of departure code book includes S straton angle of departure code books, each straton angle of departure The main lobe width of angle of departure wave beam training vector in code book is identical, wherein s straton angle of departure code books include 2^sA angle of departure Wave beam training vector, also, any one angle of departure wave beam training vector corresponds to s+1 stratons in s straton angle of departure code books Two angle of departure wave beam training vectors in angle of departure code book, the angle of departure wave beam of any one in s straton angle of departure code books The main lobe width of training vector is the main lobe width of any one angle of departure wave beam training vector in s+1 straton angle of departure code books 2 times, the angle of departure wave beam training vector in the angle of departure code book is obtained by solving-optimizing problem, and the optimization is asked The constraints of topic includes the fluctuation constraint to the main lobe and secondary lobe of the angle of departure wave beam training vector and the angle of departure The constraint of the norm of wave beam training vector, S >=2,1≤s≤S；

2. according to the method described in claim 1, it is characterized in that,

Angle of departure wave beam training vector in the angle of departure code book is obtained by solving following optimization problem：

||f||≤C.

Wherein, f indicates that angle of departure wave beam training vector, x indicate that the sending ending equipment sends the sine value of the angle of departure of signal, ε indicates the maximum fluctuation of the main lobe and secondary lobe of f；Indicate the sampled point set in the main lobe of f,Indicate that x belongs to f's Sampled point in main lobe,Indicate the sampled point set in the secondary lobe of f,Indicate that x belongs to the sampled point in the secondary lobe of f； a_t(x) array steering vector is indicated, for uniform linear array, a_t(x) form is as follows：

| | f | | indicate f norm, C indicate | | f | | constraint threshold value, wherein angle of departure wave beam in same straton angle of departure code book The value of the corresponding C of training vector is identical, and the value of the corresponding C of angle of departure wave beam training vector in different sublayers is different, C's Value is related with the antenna number of the transmitting terminal and the ε, also, wave beam training vector corresponding C in s+1 layer separations angle is less than Or it is equal to the corresponding C of s layer separations angle wave beam training vector.

3. method according to claim 1 or 2, which is characterized in that

There is intermediate zone between the main lobe and secondary lobe of the angle of departure wave beam training vector.

4. according to the method described in claim 3, it is characterized in that,

The intermediate zone of k-th of angle of departure wave beam training vector of s straton angle of departure code books is located at s+1 straton angle of departure code books The 2k-1 angle of departure wave beam training vector or the 2k angle of departure wave beam training vector main lobe section in.

5. method according to claim 1 to 4, which is characterized in that

The interval of the sine value of the main lobe width of the wave beam training vector of the angle of departure code book is [- 1,1].

6. a kind of method of wave beam training, which is characterized in that including：

Receiving device receives the data for the wave beam training that sending ending equipment is sent using angle of departure code book, the angle of departure code book Train sub- angle of departure code book, the main lobe of the angle of departure wave beam training vector in each straton angle of departure code book wide including S layers of wave beam Spend it is identical, wherein s straton angle of departure code books include 2^sA angle of departure wave beam training vector, wherein s straton angle of departure code books In two angle of departure wave beams being divided into s+1 straton angle of departure code books of any one angle of departure wave beam training vector train to It measures, the main lobe width of the angle of departure wave beam training vector of any one is the s+1 straton angles of departure in s straton angle of departure code books 2 times of the main lobe width of any one angle of departure wave beam training vector in code book, the angle of departure wave beam in the angle of departure code book Training vector is obtained by solving-optimizing problem, S >=2,1≤s≤S；

7. according to the method described in claim 6, it is characterized in that,

||f||≤C.

8. the method described according to claim 6 or 7, which is characterized in that

9. according to the method described in claim 8, it is characterized in that,

10. the method according to any one of claim 6 to 9, which is characterized in that

The interval of the sine value of the main lobe width of the angle of departure wave beam training vector of the angle of departure code book is [- 1,1].

11. a kind of sending ending equipment, which is characterized in that including：

Processing unit, for obtaining angle of departure code book, the angle of departure code book includes S straton angle of departure code books, each straton point The main lobe width of angle of departure wave beam training vector in digression code book is identical, wherein s straton angle of departure code books include a separation Angle wave beam training vector, also, any one angle of departure wave beam training vector corresponds to s+1 layers in s straton angle of departure code books Two angle of departure wave beam training vectors in sub- angle of departure code book, the angle of departure wave of any one in s straton angle of departure code books The main lobe width of beam training vector is that the main lobe of any one angle of departure wave beam training vector in s+1 straton angle of departure code books is wide 2 times of degree, the angle of departure wave beam training vector in the angle of departure code book are obtained by solving-optimizing problem, the optimization The constraints of problem includes the fluctuation constraint to the main lobe and secondary lobe of the angle of departure wave beam training vector and the separation The constraint of the norm of angle wave beam training vector, S >=2,1≤s≤S；

Transmit-Receive Unit, for sending the data that wave beam is trained to receiving device using the angle of departure code book.

12. sending ending equipment according to claim 11, which is characterized in that

||f||≤C.

13. sending ending equipment according to claim 11 or 12, which is characterized in that

14. sending ending equipment according to claim 13, which is characterized in that

15. the sending ending equipment according to any one of claim 11 to 14, which is characterized in that

16. a kind of receiving device, which is characterized in that including：

Transmit-Receive Unit, the data for receiving the wave beam training that sending ending equipment is sent using angle of departure code book, the angle of departure Code book includes that S layers of wave beam train sub- angle of departure code book, the master of the angle of departure wave beam training vector in each straton angle of departure code book Valve is of same size, wherein s straton angle of departure code books include 2^sA angle of departure wave beam training vector, wherein the s straton angles of departure Any one angle of departure wave beam training vector is divided into the instruction of two angle of departure wave beams in s+1 straton angle of departure code books in code book White silk is vectorial, and the main lobe width of the angle of departure wave beam training vector of any one is s+1 stratons point in s straton angle of departure code books 2 times of the main lobe width of any one angle of departure wave beam training vector in digression code book, the angle of departure in the angle of departure code book Wave beam training vector is obtained by solving-optimizing problem, S >=2,1≤s≤S；

Processing unit, the data for being trained according to the wave beam carry out wave beam training.

17. receiving device according to claim 16, which is characterized in that

||f||≤C.

18. receiving device according to claim 16 or 17, which is characterized in that

19. receiving device according to claim 18, which is characterized in that

20. the receiving device according to any one of claim 16 to 19, which is characterized in that