CN109995407A - Method for transmitting signals, relevant apparatus and system - Google Patents
Method for transmitting signals, relevant apparatus and system Download PDFInfo
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- CN109995407A CN109995407A CN201711498134.0A CN201711498134A CN109995407A CN 109995407 A CN109995407 A CN 109995407A CN 201711498134 A CN201711498134 A CN 201711498134A CN 109995407 A CN109995407 A CN 109995407A
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- moment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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- Computer Networks & Wireless Communication (AREA)
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Abstract
This application discloses method for transmitting signals and relevant apparatus, this method can include: the network equipment determines the location information in the first moment terminal, at the time of the first moment was that the network equipment sends data to terminal；The network equipment determines beam shape-endowing weight value vector according to the location information of the first moment terminal；The network equipment sends data to terminal using beam shape-endowing weight value vector.Implement the application, can be improved wave beam forming performance, the calculation amount for simplifying the network equipment, in addition, the application is applicable to several scenes.
Description
Technical field
This application involves fields of communication technology, in particular to method for transmitting signals, relevant apparatus and system.
Background technique
Wave beam forming is a kind of multiple antenna transmission technique applied to wireless communication system, it limits the energy for transmitting signal
System, to increase signal strength, improves the efficiency of receiving and transmitting signal in some beam direction.The cardinal principle of wave beam forming is
The beam shape-endowing weight value of every transmitting antenna is calculated according to the channel information between signal receiving end for signal sending end,
When sending signal to receiving end, transmitting terminal is weighted transmitting signal using corresponding beam shape-endowing weight value, in space
Form the wave beam that receiving end is directed toward by transmitting terminal.
Specifically, the output signal of aerial array is represented by Y=W when forming wave beamTX.Wherein, Y indicate output to
Amount, W are beam shape-endowing weight value vector, and X is the input vector of aerial array.W=[W1, W2, W3... WN]T, X=[X1, X2,
X3... XN]T, N is antenna number.
Currently, how to obtain beam shape-endowing weight value vector W is the key that realize wave beam forming.
Summary of the invention
This application provides a kind of method for transmitting signals and relevant apparatus, by positional information calculation beam shape-endowing weight value to
Amount, can be improved wave beam forming performance, in addition, the application simplifies calculation amount, and be suitable for several scenes.
In a first aspect, being applied to network equipment side, comprising: the network equipment this application provides a kind of method for transmitting signals
Determine the location information in the first moment terminal, first moment sends data to the terminal for the network equipment
Moment；The location information of network equipment terminal according to the first moment determines beam shape-endowing weight value vector；The network
Equipment sends data to the terminal using the beam shape-endowing weight value vector.
The method for transmitting signals for implementing first aspect, by positional information calculation beam shape-endowing weight value vector, to realize
Wave beam forming can be improved wave beam forming performance, simplify calculation amount, and this method is suitable for the mobile scene of terminal, this
Outside, this method is not only restricted to communication system, is suitable for time division multiplexing or frequency division multiplexing communication system.
In the application, the network equipment determines beam shape-endowing weight value vector: the network equipment first especially by following manner
The corresponding direction of arrival value θ of terminal is determined according to the location information of the first moment terminal, then according to formulaCalculate beam shape-endowing weight value vector W, wherein d is the network equipment
Antenna spacing, N be the network equipment antenna number.
Wherein, the network equipment is according to formulaDetermine that the corresponding direction of arrival value θ of terminal, network are set
Standby coordinate in a coordinate system is (x1, y1), the coordinate of the first moment terminal that the network equipment determines in a coordinate system is (x2,
y2)。
In an alternative embodiment, the network equipment is determined with specific reference to the location information and mobile message of the second moment terminal
In the location information of the first moment terminal, wherein the location information and mobile message of terminal described in the second moment are by terminal
Report, mobile message includes movement speed and moving direction, and the second moment is before the first moment.Terminal described in second moment
Location information and mobile message the network equipment can be reported to by following two mode by terminal.
First way, the location information and mobile message of the second moment terminal can report position by terminal with the period 1
Information and mobile message.Period 1 is made an appointment by the network equipment and terminal, alternatively, the period 1 is by the network equipment
It is configured according at least one of following for terminal: the movement speed of terminal, current schedulable resource, the terminal of network equipment connection
Quantity.By way of the first terminal periodic reporting position information and mobile message, the network equipment may make to obtain terminal
Latest position information, so that wave beam forming be better achieved.
The second way, the location information and mobile message of the second moment terminal can be by network equipment instruction terminals upper
Report.Specifically, when the network equipment needs to send data to terminal first message can be sent to terminal, first message is used to indicate
The location information and mobile message of terminal reporting terminal.By the second way, location information and movement that terminal reports every time
Information can be applied in wave beam forming, avoid waste of resource.
It is intelligible, implement the embodiment, when terminal is in the scene of moving condition, still is able to accurately carry out wave
Beam figuration further when terminal high-speed is mobile, can also guarantee the accuracy of wave beam forming.That is, the embodiment is applicable in
In the mobile scene of terminal.
In another alternative embodiment, the network equipment is specifically using the location information of the second moment terminal as end at the first moment
The location information of the location information at end, the second moment terminal is reported by terminal, and the second moment is before the first moment.When second
The location information for carving terminal can refer to the two ways in above-mentioned alternative embodiment by the mode that terminal is reported to the network equipment,
This will not be repeated here.
It is intelligible, implement the embodiment, when terminal is in the mobile scene of low speed, can accurately carry out wave beam tax
Shape.That is, the embodiment is suitable for the mobile scene of terminal low speed.
Optionally, in the application, in conjunction with above-mentioned two alternative embodiment, terminal when reporting information to the network equipment, on
The information of report can be carried in physical uplink control channel or Physical Uplink Shared Channel.Further, terminal reports
Information can be reported with the signaling that terminal in the prior art reports, to save interface-free resources.
Second aspect, this application provides a kind of network equipments, for executing the method for transmitting signals of first aspect description.
The network equipment can include: memory and the processor coupled with the memory, transmitter and receiver, in which: described
Transmitter is used to send signal to terminal or other network equipments, and the receiver is for receiving terminal or other network equipments
The signal of transmission, the memory are used to store the realization code of the method for transmitting signals of first aspect description, the processor
For executing the program code stored in the memory, the i.e. possible embodiment of execution first aspect or first aspect
In any one provided method for transmitting signals.
The third aspect, this application provides a kind of network equipments, including multiple functional modules, for executing first accordingly
Any one provided method in aspect or the possible embodiment of first aspect.
Fourth aspect, this application provides a kind of communication system, the communication system includes: terminal and the network equipment,
In, the network equipment can be the network equipment referred in second aspect or the third aspect.
5th aspect, this application provides a kind of computer readable storage medium, is stored on the readable storage medium storing program for executing
Realize that the program code of the method for transmitting signals of first aspect description, the program code include the letter of operation first aspect description
Number transmission method executes instruction.
6th aspect, this application provides a kind of computer program products comprising instruction, when it runs on computers
When, so that computer executes method for transmitting signals described in above-mentioned first aspect.
Implement the application, the network equipment determines beam shape-endowing weight value vector according to the location information of the first moment terminal,
To send data to terminal by wave beam forming.The application passes through positional information calculation beam shape-endowing weight value vector, accuracy
Height improves the performance of wave beam forming；By positional information calculation beam shape-endowing weight value vector, not by the limit of uplink and downlink channel
System, application scenarios are wider, such as can be applied to time division multiplex system, Frequency Division Multiplexing system etc.；Without dedicated uplink signal,
Interface-free resources can be saved；The scene mobile suitable for terminal；In addition, the application simplifies network equipment calculation amount, can reduce subsequent
The networking cost of communication system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of communication system provided by the present application
Fig. 2 is the structural schematic diagram of terminal provided by the present application；
Fig. 3 is the structural schematic diagram of the network equipment provided by the present application；
Fig. 4-Fig. 5 is the schematic diagram of a scenario of beam shaping in the prior art；
Fig. 6 is the flow diagram of method for transmitting signals provided by the present application；
Fig. 7 is direction of arrival schematic diagram provided by the present application；
Fig. 8 is the flow diagram of another method for transmitting signals provided by the present application；
Fig. 9 is the flow diagram of another method for transmitting signals provided by the present application；
Figure 10 is the structural block diagram of network equipment provided by the present application.
Specific embodiment
The term that presently filed embodiment part uses is only used for explaining the specific embodiment of the application, rather than
It is intended to limit the application.
Referring to Fig. 1, the communication system 100 can include: the network equipment 110 and terminal 120.Wherein, the network equipment 110 and end
End 120 is in communication with each other by certain technology of eating dishes without rice or wine.The technology of eating dishes without rice or wine can include: existing 2G (such as global system for mobile communications
(Global System for Mobile Communications, GSM)), 3G (such as Universal Mobile Communication System
(Universal Mobile Telecommunications System, UMTS), wideband code division multiple access (Wideband Code
Division Multiple Access, WCDMA), TD SDMA (Time Division-Synchronous
Code Division Multiple Access, TD-SCDMA)), 4G (such as FDDLTE, TDDLTE) and new wireless access
Technology (NewRadio Access Technology, NewRAT), such as following 4.5G, 5G etc. that will be appeared on the market.
The network equipment 110 can be the equipment for being communicated with terminal 120, can be the BTS in GSM or CDMA
(Base Transceiver Station), the NB (NodeB) being also possible in WCDMA, can also be the evolved base in LTE
It stands (evolved NodeB, eNB) perhaps connecing in relay station or mobile unit, wearable device and future 5G network
In log equipment or public land mobile network (Public Land Mobile Network, PLMN) network of the following evolution
Access network equipment etc..
Terminal 120 may include relay that (Relay) and base station can carry out data communication can be seen as terminal.Eventually
End 120 can be cellular phone, wireless phone, session initiation protocol (Session Initiation Protocol, SIP) electricity
It talks about, wireless local loop (Wireless Local Loop, WLL) is stood, personal digital assistant (Personal Digital
Assistant, PDA), the handheld device with wireless communication function, calculate equipment or be connected to radio modem its
Its processing equipment, mobile unit, wearable device and mobile station in future 5G network or the PLMN network of the following evolution
In terminal device etc..
In the application, wireless communication system 100 is multi-beam communication system.Wherein:
The network equipment 101 can be configured with large-scale aerial array, and the network equipment is when sending data to terminal, benefit
The wave beam being differently directed can be formed with beamforming technique, so as to obtain apparent antenna array gain, can expand letter
Number coverage area improves edge throughput and reduces interference.Intelligible, a terminal is in the position of some determination
When, corresponding to fall into one or more range of transmission for being directed toward wave beam, which can receive at the position of the determination makes
With said one or multiple signals for being directed toward wave beam and sending.
Wherein, when the key of wave beam forming is control aerial array, the weighting coefficient of each array element, i.e. wave in aerial array
Beam shape-endowing weight value vector W.Currently, mainly proposing the technology that following two obtains beam shape-endowing weight value vector W in the prior art
Scheme.
Referring to fig. 2, Fig. 2 shows the schematic diagram of a scenario of adaptive wave beam shaping in the prior art.The program passes through uplink
Signal calculates beam shape-endowing weight value vector, it may include following steps:
1. terminal sends uplink signal to the network equipment；
2. the channel response that the network equipment obtains up channel according to uplink signal；
3. the network equipment estimates the channel response of down channel according to the reciprocity of uplink and downlink channel；
4. the network equipment calculates beam shape-endowing weight value vector according to the channel response of down channel.
The program has the drawback that
1. usage scenario is limited: since the reciprocity of uplink and downlink channel is utilized in the program, being only applicable to uplink and downlink channel
Reciprocity time division multiplexing (TDD) system with high accuracy.
2. the program is exclusively used in wave beam forming uplink signal dependent on what terminal was sent, the transmission of the uplink signal wastes empty
Mouth resource, when terminal is more, waste is serious.
3. the network equipment calculates complicated: under normal circumstances, the network equipment calculates association side according to the channel response of down channel
Poor matrix, and the operation such as carry out Eigenvalues Decomposition is to obtain beam shape-endowing weight value vector, it is computationally intensive, to the place of the network equipment
It is high to manage Capability Requirement, it is at high cost.
4. not being suitable for the mobile scene of terminal, using the program, after terminal is mobile, the network equipment is unable to learn in time end
Information after end is mobile, the decline of wave beam forming performance.Under the scene that terminal fast moves, such as high-speed rail, train, wave beam are assigned
Shape is it is possible that negative gain.
The scene signal that multiple fixed wave beams being directed toward in the prior art carry out wave beam forming is shown referring to Fig. 3, Fig. 3
Figure.In the program, the network equipment is pre-designed fixed quantity, the fixed wave beam being directed toward, when sending data to terminal, network
Equipment from multiple wave beams selection signal quality preferably wave beam to terminal send data.
Since wave beam is fixed, the calculation amount of scheme shown in Fig. 3 is simpler compared to Fig. 2, and still, wave beam fixation leads to wave beam
The performance of figuration is poor.For example, wave beam 0 and wave beam 1 all cannot be complete when terminal is located at the middle position of wave beam 0 and wave beam 1
All standing terminal, the poor signal quality that terminal receives.In addition, the program is not suitable for the mobile scene of terminal equally, use
The program, after terminal is mobile, the network equipment is unable to learn in time the information after terminal movement, the decline of wave beam forming performance.At end
It holds under the scene fast moved, such as high-speed rail, train, wave beam forming is it is possible that negative gain.
Based on aforementioned wireless communication system 100, this application provides a kind of method for transmitting signals and relevant apparatus.First in detail
The network equipment provided by the present application and terminal are carefully described.
The terminal 200 of some embodiments of the present application offer is shown with reference to Fig. 4, Fig. 4.As shown in figure 4, terminal 200 can
It include: one or more processors 201, memory 202, communication interface 203, receiver 205, transmitter 206, coupler
207, antenna 208, terminal interface 202 and input/output module (including audio input output module 210, key-press input mould
Block 211 and display 212 etc.).These components can be connected by bus 204 or other modes, and Fig. 4 by bus to be connected
It is connected in example.Wherein:
Communication interface 203 can be used for terminal 200 and other communication equipments, such as the network equipment, be communicated.Specifically,
The network equipment can be the network equipment 300 shown in fig. 5.Specifically, communication interface 203 can be long term evolution (LTE)
(4G) communication interface is also possible to 5G or the following communication interface newly eated dishes without rice or wine.It is not limited to wireless communication interface, terminal 200 is also
Wired communication interface 203, such as local area access networks (local access network, LAN) interface can be configured with.
Transmitter 206 and receiver 205 can regard a radio modem as.In terminal 200,206 He of transmitter
The quantity of receiver 205 may each be one or more.Antenna 208 can be used for for the electromagnetic energy in transmission line being converted into certainly
By the electromagnetic wave in space, or the electromagnetic energy electromagnetic wave in free space being converted into transmission line.Coupler 207 is used
It is divided into multichannel in the mobile communication signal for receiving antenna 208, distributes to multiple receivers 205.
In addition to transmitter 206 shown in Fig. 4 and receiver 205, terminal 200 may also include other communication components, such as GPS
Module, bluetooth (bluetooth) module, Wireless Fidelity (wireless fidelity, Wi-Fi) module etc..It is not limited to
The wireless communication signals of statement are stated, terminal 200 can also support other wireless communication signals, such as satellite-signal, short-wave signal
Etc..It is not limited to wirelessly communicate, terminal 200 can be configured with wired network interface (such as LAN interface) to support cable modem
Letter.
The input/output module can be used for realizing the interaction between terminal 200 and terminal/external environment, can mainly include
Audio input output module 210, keyboard input module 211 and display 212 etc..Specifically, the input/output module is also
Can include: camera, touch screen and sensor etc..Wherein, the input/output module pass through terminal interface 209 with
Terminal handler 201 is communicated.
Memory 202 is coupled with terminal handler 201, for storing various software programs and/or multiple groups instruction.Specifically
, memory 202 may include the memory of high random access, and may also comprise nonvolatile memory, such as one or
Multiple disk storage equipments, flash memory device or other non-volatile solid-state memory devices.Memory 202 can store operation system
It unites (following abbreviation systems), such as the embedded OSs such as ANDROID, IOS, WINDOWS or LINUX.Memory 202
Network communication program can also be stored, which can be used for and one or more optional equipments, one or more whole
End equipment, one or more network equipments are communicated.Memory 202 can also store terminal interface program, the terminal interface
Program can show by patterned operation interface by the content image of application program is true to nature, and pass through menu, right
Talk about the control operation that the input controls such as frame and key receive terminal to application program.
In some embodiments of the present application, one or more embodiments that memory 202 can be used for storing the application are mentioned
Realization program of the method for transmitting signals of confession in 200 side of terminal.The signal that one or more embodiments about the application provide
The realization of transmission method, please refers to subsequent embodiment.
Terminal handler 201 can be used for reading and executing computer-readable instruction.Specifically, terminal handler 201 can be used
In the method for transmitting signals that one or more embodiments of the program that calling is stored in memory 212, such as the application provide
Realization program in 200 side of terminal, and execute the instruction that the program includes.
It should be understood that terminal 200 can be the terminal 103 in wireless communication system 100 shown in fig. 1, it is implementable to be
Mobile device, mobile station (mobile station), mobile unit (mobile unit), radio-cell, remote unit, terminal
Agency, mobile client etc..
It should be noted that terminal 200 shown in Fig. 4 is only a kind of implementation of the embodiment of the present application, practical application
In, terminal 200 can also include more or fewer components, here with no restriction.
The network equipment 300 of some embodiments of the present application offer is shown with reference to Fig. 5, Fig. 5.As shown in figure 5, network is set
Standby 300 can include: one or more network equipment processors 301, communication interface 303, transmitter 305, connect memory 302
Receive device 306, coupler 307 and antenna 308.These components can be connected by bus 304 or other modes, and Fig. 5 is by total
For line connection.Wherein:
Communication interface 303 can be used for the network equipment 300 and other communication equipments, such as terminal device or other networks are set
It is standby, it is communicated.Specifically, the terminal device can be terminal 200 shown in Fig. 4.Specifically, communication interface 303 communicates
Interface 203 can be long term evolution (LTE) (4G) communication interface, be also possible to 5G or the following communication interface newly eated dishes without rice or wine.No
It is limited to wireless communication interface, the network equipment 300 can be configured with wired communication interface 303 to support wire communication, such as
Backhaul link between one network equipment 300 and other network equipments 300 can be wire communication connection.
Transmitter 305 can be used for carrying out transmitting processing to the signal that network equipment processor 301 exports, such as pass through wave beam
Directive sending is realized in forming.In some embodiments of the present application, transmitter 305 may include beam forming controller, be used for
To signal is sent multiplied by beam shape-endowing weight value vector W, the directional transmissions of signal are controlled.
In some embodiments of the present application, transmitter 305 and receiver 306 can regard a radio modem as.
In the network equipment 300, the quantity of transmitter 305 and receiver 306 may each be one or more.Antenna 308 can be used for
Electromagnetic energy in transmission line is converted into the electromagnetic wave in free space, or the electromagnetic wave in free space is converted into passing
Electromagnetic energy in defeated line.Coupler 307 can be used for mobile communication number being divided into multichannel, distribute to multiple receivers 306.
Memory 302 is coupled with network equipment processor 301, for storing various software programs and/or multiple groups instruction.Tool
Body, memory 302 may include the memory of high random access, and may also comprise nonvolatile memory, such as one
Or multiple disk storage equipments, flash memory device or other non-volatile solid-state memory devices.Memory 302 can store operation
System (following abbreviation systems), such as the embedded OSs such as uCOS, VxWorks, RTLinux.Memory 302 can be with
Network communication program is stored, which can be used for setting with one or more optional equipments, one or more terminals
Standby, one or more network equipments are communicated.
Network equipment processor 301 can be used for carrying out wireless channel management, implementation calling and the foundation of communication link and tear open
It removes, and provides cell switching control etc. for the terminal in this control zone.Specifically, network equipment processor 301 can include: pipe
Reason/communication module (administration module/communication module, AM/CM) (for speech channel exchange and
The center of information exchange), basic module (basic module, BM) (for complete call treatment, signaling processing, radio resource
Management, the management of Radio Link and circuit maintenance function), code conversion and submultiplex unit (transcoder and
SubMultiplexer, TCSM) (for completing multiplexing and demultiplexing and code conversion function) etc..
In the embodiment of the present application, network equipment processor 301 can be used for reading and executing computer-readable instruction.Specifically
, network equipment processor 301 can be used for calling the program being stored in memory 302, such as the one or more of the application
The method for transmitting signals that embodiment provides and executes the instruction that the program includes in the realization program of 300 side of the network equipment.
It should be understood that the network equipment 300 can be the network equipment 101 in wireless communication system 100 shown in fig. 1,
It is implementable be base transceiver station, wireless transceiver, a basic service set (BSS), an extended service set (ESS), NodeB,
ENodeB, gNodeB, access point or TRP etc..
It should be noted that the network equipment 300 shown in fig. 5 is only a kind of implementation of the embodiment of the present application, it is practical
In, the network equipment 300 can also include more or fewer components, here with no restriction.
Based on aforementioned wireless communication system 100, terminal 200, the corresponding embodiment of the network equipment 300 and existing
The deficiency of wave beam forming in technology, this application provides a kind of method for transmitting signals, can be realized wave beam forming.
The broad inventive concept of the application can include: when the network equipment sends data to terminal, be currently located according to terminal
Position calculates beam shape-endowing weight value, and carries out wave beam forming according to the beam shape-endowing weight value being calculated, and sends number to terminal
According to.The application calculates simple, accuracy rate height, is suitable for several scenes.
Intelligible, in the application, fixed position is arranged in the network equipment, and usually static, terminal can be shifting
Dynamic, it is also possible to static.
Referring to Fig. 6, Fig. 6 is the flow diagram of method for transmitting signals provided by the present application, the signal transmission side of the application
Method may include following steps:
S101, the network equipment determine the location information in the first moment terminal, and the first moment was that the network equipment is sent out to terminal
At the time of sending data.
Specifically, the network equipment determines the location information of the first moment terminal first in the application, the first moment was network
At the time of equipment sends data to terminal by beamforming technique.Wherein, how the network equipment determines the first moment terminal
Location information can refer to subsequent embodiment, and this will not be repeated here.It is intelligible, in net at the time of network equipment implementation steps S101
Network equipment was sent to terminal before data (i.e. the first moment).
Specifically, the location information of terminal is the geographical location of terminal, the location information of terminal can characterize terminal and network
The information such as the distance between equipment, orientation.In the application, the location information of terminal can be by coordinate representation, for example, geographical
Longitude and latitude in coordinate system can also be the coordinate etc. in other coordinate systems.
In an alternative embodiment, a rectangular coordinate system can arbitrarily be established.Since the position of the network equipment immobilizes, net
The location information of network equipment also immobilizes, and is represented by (x1, y1), the location information of the first moment terminal is represented by (x2,
y2)。
In a specific embodiment, since the position of the network equipment immobilizes, it can will be where the network equipment
Origin of the position as rectangular coordinate system, x1=0, y1=0.
S102, the network equipment determine beam shape-endowing weight value vector according to the location information of the first moment terminal.
Specifically, can be wrapped when the network equipment determines beam shape-endowing weight value vector according to the location information of the first moment terminal
Include following two steps:
1. determining the corresponding direction of arrival value θ of terminal according to the location information of the first moment terminal.
Here, since the network equipment at this time does not also send signal to terminal, direction of arrival is considered as the network equipment
When sending signal to terminal in the future, the deflection of the aerial array of sense and the network equipment.With reference to Fig. 7, it is assumed that network is set
Standby coordinate in a coordinate system is (x1, y1), the first moment terminal that the network equipment determines in step s101 is in a coordinate system
Coordinate be (x2, y2), then direction of arrival value
It is intelligible, can store in the concrete realization, in the network equipment direction of arrival value andCorresponding relationship table
Lattice, the network equipment can calculate after the location information for knowing the first moment terminalAnd wave is known by way of tabling look-up
Up to direction value, calculation amount is reduced.
2. according to formulaCalculate beam shape-endowing weight value vector
W, wherein d is the antenna spacing of the network equipment, and N is the antenna number of the network equipment.
Wherein, W is beam shape-endowing weight value vector, and the element in vector respectively corresponds each antenna of the network equipment.
By above-mentioned two step, the network equipment has determined beam shape-endowing weight value according to the location information of the first moment terminal
Vector, the calculating process is simple, and calculation amount is small, convenient to carry out.
S103, the network equipment send data to terminal using beam shape-endowing weight value vector.
Specifically, the network equipment is weighted transmitting signal using beam shape-endowing weight value vector, one is formed by sending
It is directed toward the wave beam of receiving end in end.Wherein, when the network equipment uses beam shape-endowing weight value, the output signal of aerial array can be indicated
For Y=WTX, X are the input vector of aerial array, X=[X1, X2, X3... XN]T, N is antenna number.
Implementation steps S103, after the network equipment has determined wave beam forming vector according to the position of the first moment terminal, the wave
Location information of the beam shape-endowing weight value vector counterpart terminal at the first moment, the network equipment using the beam shape-endowing weight value vector into
Row wave beam forming precisely forms the wave beam for being directed toward terminal, to obtain optimal wave beam forming performance.
Method for transmitting signals shown in fig. 6, the network equipment determine beam shaping by the location information of the first moment terminal
Weight vector carries out beam shaping, sends data to terminal, can obtain preferably beam shaping performance.In addition, passing through position
Acquisition of information beam shaping weight vector can simplify the calculation amount of the network equipment, improve wave beam forming efficiency.Use this Shen
Method for transmitting signals please, due to simplifying the calculation amount of the network equipment, when setting up communication network, network can be reduced
The hardware configuration of equipment, to reduce cost.
Illustrate in above-mentioned method for transmitting signals shown in fig. 6 how the network equipment determines below by two embodiments
The location information of first moment terminal.
(1) embodiment 1
In the present embodiment, the location information and mobile message for the second moment terminal that the network equipment is reported according to terminal,
Determine the location information of the first moment terminal.That is, terminal need to be to net before the step S101 of method for transmitting signals shown in Fig. 6
Network equipment reports the location information and mobile message at the second moment.
It can be found in Fig. 8, Fig. 8 is the flow diagram of method for transmitting signals provided by the present application, and in fig. 8, terminal is to net
Network equipment reports the location information and mobile message at the second moment, method includes the following steps:
S201, terminal report the location information and mobile message of the second moment terminal to the network equipment, and the second moment is
Before one moment, mobile message includes movement speed and moving direction.
Wherein, terminal can by satellite navigation and location system (Global Navigation Satellite System, often
That sees has GPS, Beidou etc.) and all kinds of motion sensors (such as accelerometer, gyroscope and magnetometer etc.) obtain second
The location information and mobile message of moment terminal.
The location information for the second moment terminal that terminal is reported to the network equipment is carried on physical uplink control channel
(Physical Uplink Control Channel, PUCCH) or Physical Uplink Shared Channel (Physical
UplinkShared Channel, PUSCH) in；Likewise, the mobile message of the second moment terminal can also be carried on PUCCH or
In PUSCH.In the application, letter that the location information and mobile message of the second moment terminal can be reported with terminal in the prior art
Order reports together, as RRC Connection Setup Complete signaling, Capability Info Indication believe
Enable etc., interface-free resources can be saved.
In the application, the time difference between the second moment and the first moment can be ensured in certain threshold by following two mode
In value (i.e. the time difference between the second moment and the first moment is little), to guarantee that the network equipment is estimated in step S202
The precision of the location information at the first moment of terminal.
(1) the first, terminal sends location information and mobile message to the network equipment with the period 1.It is intelligible, the
At the time of one moment was that the network equipment sends data to terminal, the second moment was to receive terminal hair network equipment the last time
At the time of the location information and mobile message that send (time of the transmission of signal is negligible).Terminal periodic reporting position information
With the mode of mobile message, the network equipment may make to know the position of terminal in real time, when accurately estimating to send data to terminal
The position of (i.e. the first moment) terminal, guarantees the performance of beam shaping.
In an alternative embodiment, the period 1 can be made an appointment by the network equipment and the terminal.
In another alternative embodiment, the period 1 can by the network equipment according to it is at least one of following be the terminal
Configuration: the terminal quantity that the movement speed of the terminal, current schedulable resource, the network equipment connect.For example, when terminal
When movement speed is very fast, the network equipment is that the period 1 of terminal configuration is shorter；When currently schedulable resource is less, network is set
The standby period 1 for terminal configuration is longer；When the terminal quantity of network equipment connection is more, the network equipment is terminal configuration
Period 1 is longer.
(2) second, the location information and mobile message of terminal reporting terminal under the instruction of the network equipment.
Specifically, the network equipment can need to terminal send data in the case where, to terminal send first message, first
Message is used to indicate terminal reporting position information and mobile message.By the second way, terminal is under the instruction of the network equipment
Reporting position information and mobile message, the location information and mobile message reported every time can be used for wave beam forming, can keep away
Exempt to waste transfer resource.
S202, the network equipment are determined with specific reference to the location information and mobile message of terminal described in the second moment first
The location information of moment terminal.
Specifically, can estimate terminal under according to the moving direction of terminal and movement speed in the moving process of terminal
The location of one moment.For example, in a coordinate system, if the location information at the second moment of terminal is expressed as (x0, y0), terminal
Mobile message are as follows: along the x axis, speed v, then terminal can be estimated in the coordinate (x at the first moment2, y2).Wherein, x2=
(x0+ the first-the second moment of moment) * v, y2=y0.It is intelligible, it is whole according to the moving direction of terminal and moving speed estimation
End is in the location of subsequent time, when terminal is in high-speed mobile or the relatively fixed scene of moving direction, such as eventually
When end is on high-speed rail, train, the location information precision at obtained the first moment of terminal is very high.
S203, the network equipment determine beam shape-endowing weight value vector according to the location information of the first moment terminal.
S204, the network equipment send data to terminal using beam shape-endowing weight value vector.
Intelligible, step S203-S204 is identical with the step S102-S103 in method for transmitting signals shown in Fig. 6, can
Referring to associated description, this will not be repeated here.
Intelligible, embodiment 1 still is able to accurately carry out wave beam tax when terminal is in the scene of moving condition
Shape, also, when terminal high-speed is mobile, it can also guarantee the accuracy of wave beam forming.That is, embodiment 1 is mobile suitable for terminal
Scene.
(2) embodiment 2
In the present embodiment, the movement speed of terminal is less than preset threshold, and preset threshold can pre-define.The network equipment will
The location information of the terminal at the second moment that terminal reports, the location information of the terminal as the first moment.
It can be found in Fig. 9, Fig. 9 is the flow diagram of method for transmitting signals provided by the present application, and in Fig. 9, terminal is to net
Network equipment reports the location information and mobile message at the second moment, method includes the following steps:
S301, terminal report the location information of the second moment terminal to the network equipment, and the second moment is before the first moment；
Wherein, movement speed of the terminal at the second moment is less than preset threshold.
Wherein, how terminal obtains the location information of the second moment terminal, and carries the location information that terminal reports
It is identical in channel and above-described embodiment 1, it can refer to associated description.
In the present embodiment, terminal can also periodical reporting position information, or report position under the instruction of the network equipment
Confidence breath, can refer to the associated description in above-described embodiment 1.
S302, the network equipment are using the location information of terminal described in second moment as the position of terminal described in the first moment
Confidence breath.
In the present embodiment, when terminal is when the movement speed at the second moment is less than preset threshold, terminal is at the first moment
The distance of position and terminal between the physical location at the second moment will not be too far, and the network equipment uses the second moment terminal
When location information carries out wave beam forming, the wave beam of formation still is able to the physical location of the first moment terminal of covering, equally can
Reach preferably wave beam forming performance.
S303, the network equipment determine beam shape-endowing weight value vector according to the location information of the first moment terminal.
S304, the network equipment send data to terminal using beam shape-endowing weight value vector.
Intelligible, step S303-S304 is identical with the step S102-S103 in method for transmitting signals shown in Fig. 6, can
Referring to associated description, this will not be repeated here.
Intelligible, embodiment 2 can accurately carry out wave beam forming when terminal is in the mobile scene of low speed.That is,
Embodiment 2 is suitable for the mobile scene of terminal low speed.
Above-described embodiment 1 and embodiment 2 respectively describe the determining location information in the first moment terminal of the network equipment
Two ways.Optionally, in order to better implement the method for transmitting signals of the application, terminal can obtain the movement of itself first
Speed simultaneously judges the scene mobile in high-speed mobile or low speed, if being in the scene of high-speed mobile, terminal can be set to network
Standby reporting position information and mobile message, i.e. method for transmitting signals in implementation embodiment 1；If the scene mobile in low speed,
Terminal can be to network equipment reporting position information, i.e. method for transmitting signals in implementation embodiment 2.
By above-mentioned method for transmitting signals, embodiment 1 and embodiment 2 shown in fig. 6, the network equipment can pass through in the application
Wave beam forming sends data to terminal, has the following beneficial effects:
1. simplifying network equipment calculation amount, it will be appreciated that, in later communication system, set using the network of lower configuration
Therefore the standby method for transmitting signals for being equally able to use the application can reduce networking cost.
2. accuracy is high by positional information calculation beam shape-endowing weight value vector, the performance of wave beam forming is improved.
3. not limited by uplink and downlink channel by positional information calculation beam shape-endowing weight value vector, application scenarios are wider,
Such as can be applied to time division multiplex system, Frequency Division Multiplexing system etc..
4. the method for transmitting signals of the application is not necessarily to dedicated uplink signal, interface-free resources can be saved.
5. the method for transmitting signals of the application is suitable for the mobile scene of terminal.
Intelligible, the method for transmitting signals of the application can standardize, so that the following all network equipment and end
End (no matter being same manufacturer's production) can all implement the method for transmitting signals of the application by physical layer.Optionally, if
The method for transmitting signals of the application does not standardize, the network equipment of same manufacturer's production and terminal (the i.e. network equipment and end
Between end using the manufacturer independently as defined in agreement communicated) method for transmitting signals of the application can be implemented by application layer.
Referring to Figure 10, Figure 10 is the functional block diagram of the network equipment 400 provided by the present application, and the network equipment shown in Fig. 10 can
The network equipment being embodied as in Fig. 1 communication system can also realize the net in the method for transmitting signals for above-mentioned Fig. 6, Fig. 8, Fig. 9
Network equipment.
As shown in Figure 10, the network equipment 400 can include: the first determination unit 401, the second determination unit 402 and transmission are single
Member 403, wherein
First determination unit 401, for determine the first moment terminal location information, the first moment be the network equipment to
At the time of terminal sends data；
Second determination unit 402, for determining beam shape-endowing weight value vector according to the location information of the first moment terminal；
Transmission unit 403, for sending data to terminal using beam shape-endowing weight value vector.
In an alternative embodiment, the network equipment 400 may also include the first receiving unit 404, report for receiving terminal
The location information and mobile message of second moment terminal, the second moment, mobile message included movement speed before the first moment
And moving direction；First determination unit 401 is determined specifically for the location information and mobile message according to the second moment terminal
In the location information of the first moment terminal.
Further, transmission unit 403 are also used to send first message to terminal, and first message is used to indicate in terminal
Report the location information and mobile message of terminal.
In another alternative embodiment, the network equipment 400 may also include the second receiving unit 405, for receiving terminal
The location information of second moment terminal of report, the second moment is before the first moment；Wherein, movement of the terminal at the second moment
Speed is less than preset threshold；First determination unit 401, when specifically for using the location information of the second moment terminal as first
Carve the location information of terminal.
Intelligible, the effect of each functional unit of the network equipment 400 can refer to Fig. 6, Fig. 8, Fig. 9 above and correlation
Description, which is not described herein again.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer journey
Sequence product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all
Or it partly generates according to process described herein or function.The computer can be general purpose computer, dedicated computing
Machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the calculating
Machine instruction can from a web-site, computer, server or data center by it is wired (such as coaxial cable, optical fiber,
Digital Subscriber Line) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
Person is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can
To be magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid-state
Hard disk Solid State Disk) etc..
Claims (20)
1. a kind of method for transmitting signals characterized by comprising
The network equipment determines the location information in the first moment terminal, and first moment is the network equipment to the terminal
At the time of sending data；
The location information of network equipment terminal according to the first moment determines beam shape-endowing weight value vector；
The network equipment sends data to the terminal using the beam shape-endowing weight value vector.
2. the method as described in claim 1, which is characterized in that the network equipment determines the position of the terminal described in the first moment
Before confidence breath, further includes:
The network equipment receives the location information and mobile message of terminal described in the second moment that the terminal reports, and described
Two moment, the mobile message included movement speed and moving direction before first moment；
The network equipment is determined with specific reference to the location information and mobile message of terminal described in second moment at first
Carve the location information of the terminal.
3. method according to claim 2, which is characterized in that
The network equipment receives the location information and mobile message that the terminal reports with the period 1；
Wherein, the period 1 is made an appointment by the network equipment and the terminal, alternatively, the period 1 is by described
The network equipment is terminal configuration.
4. method as claimed in claim 3, which is characterized in that the period 1 by the network equipment according to it is following at least
One configures for the terminal: the movement speed of the terminal, current schedulable resource, the number of terminals of network equipment connection
Amount.
5. method according to claim 2, which is characterized in that the network equipment receives the second moment that the terminal reports
Before the location information and mobile message of the terminal, the method also includes:
The network equipment sends first message to the terminal, and the first message is used to indicate the terminal and reports the end
The location information and mobile message at end.
6. such as the described in any item methods of claim 2-5, which is characterized in that
The location information of terminal described in the second moment that the terminal reports is carried on physical uplink control channel or physics
In Uplink Shared Channel；
The mobile message of terminal described in the second moment that the terminal reports is carried on physical uplink control channel or physics
In Uplink Shared Channel.
7. the method as described in claim 1, which is characterized in that the network equipment determines the position of the terminal described in the first moment
Before confidence breath, further includes:
The network equipment receives the location information of terminal described in the second moment that the terminal reports, and second moment is in institute
Before stating for the first moment；Wherein, movement speed of the terminal at the second moment is less than preset threshold；
The network equipment is believed the location information of terminal described in second moment as the position of terminal described in the first moment
Breath.
8. the method according to claim 1 to 7, which is characterized in that the network equipment is according to the first moment
The location information of terminal determines beam shape-endowing weight value vector, comprising:
The location information of network equipment terminal according to the first moment determines the corresponding direction of arrival value θ of the terminal,
And according to formulaCalculate beam shape-endowing weight value vector W, wherein d
For the antenna spacing of the network equipment, N is the antenna number of the network equipment.
9. method according to claim 8, which is characterized in that the position of network equipment terminal according to the first moment
Information determines the corresponding direction of arrival value θ of the terminal, comprising:
The coordinate of the network equipment in a coordinate system is (x1, y1), terminal described in the first moment that the network equipment determines exists
Coordinate in coordinate system is (x2, y2), the network equipment determines the corresponding direction of arrival value of terminal described in the first moment
10. a kind of network equipment characterized by comprising the first determination unit, the second determination unit and transmission unit, wherein
First determination unit, for determining the location information in the first moment terminal, first moment is the network
At the time of equipment sends data to the terminal；
Second determination unit, the location information for the terminal according to the first moment determine beam shape-endowing weight value vector；
The transmission unit, for sending data to the terminal using the beam shape-endowing weight value vector.
11. the network equipment as claimed in claim 10, which is characterized in that further include: the first receiving unit,
First receiving unit, for receiving the location information and mobile letter of terminal described in the second moment that the terminal reports
Breath, second moment, the mobile message included movement speed and moving direction before first moment；
First determination unit, specifically for the location information and mobile message of the terminal according to second moment, really
It is scheduled on the location information of terminal described in the first moment.
12. the network equipment as claimed in claim 11, which is characterized in that
First receiving unit receives the location information and mobile message that the terminal reports with the period 1；
Wherein, the period 1 is made an appointment by the network equipment and the terminal, alternatively, the period 1 is by described
The network equipment is terminal configuration.
13. the network equipment as claimed in claim 12, which is characterized in that the period 1 by the network equipment according to
At least one of lower is that the terminal configures: the movement speed of the terminal, current schedulable resource, network equipment connection
Terminal quantity.
14. the network equipment as claimed in claim 11, which is characterized in that
The transmission unit is also used to send first message to the terminal, and the first message is used to indicate in the terminal
Report the location information and mobile message of the terminal.
15. such as the described in any item network equipments of claim 11-14, which is characterized in that
The location information of terminal described in the second moment that the terminal reports is carried on physical uplink control channel or physics
In Uplink Shared Channel；
The mobile message of terminal described in the second moment that the terminal reports is carried on physical uplink control channel or physics
In Uplink Shared Channel.
16. the network equipment as claimed in claim 10, which is characterized in that further include: the second receiving unit,
Second receiving unit, for receiving the location information of terminal described in the second moment that the terminal reports, described
Two moment are before first moment；Wherein, movement speed of the terminal at the second moment is less than preset threshold；
First determination unit, specifically for using the location information of terminal described in second moment as described in the first moment
The location information of terminal.
17. such as the described in any item network equipments of claim 10-16, which is characterized in that
Second determination unit determines that the terminal is corresponding specifically for the location information of the terminal according to the first moment
Direction of arrival value θ, and according to formulaCalculate beam shape-endowing weight value
Vector W, wherein d is the antenna spacing of the network equipment, and N is the antenna number of the network equipment.
18. the network equipment as claimed in claim 17, which is characterized in that
The location information of second determination unit terminal according to the first moment determines the corresponding direction of arrival of the terminal
Value θ, comprising:
Second determination unit determines the corresponding direction of arrival value of terminal described in the first momentIts
In, the coordinate of the network equipment in a coordinate system is (x1, y1), the coordinate of terminal in a coordinate system described in the first moment is
(x2, y2)。
19. a kind of computer readable storage medium, including instruction, when run on a computer, so that computer executes such as
Method described in claim 1-9.
20. a kind of computer program product comprising instruction, when run on a computer, so that computer executes such as right
It is required that method described in 1-9.
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| CN201711498134.0A CN109995407A (en) | 2017-12-29 | 2017-12-29 | Method for transmitting signals, relevant apparatus and system |
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| CN201711498134.0A CN109995407A (en) | 2017-12-29 | 2017-12-29 | Method for transmitting signals, relevant apparatus and system |
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