CN109831823A - For the method for communication, terminal device and the network equipment - Google Patents
For the method for communication, terminal device and the network equipment Download PDFInfo
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- CN109831823A CN109831823A CN201711182970.8A CN201711182970A CN109831823A CN 109831823 A CN109831823 A CN 109831823A CN 201711182970 A CN201711182970 A CN 201711182970A CN 109831823 A CN109831823 A CN 109831823A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
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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
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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Abstract
The embodiment of the present disclosure is related to the method for communication, terminal device and the network equipment.Method at terminal device includes: the measurement based on downlink reference signal, determines the information of interfered cell；Reference information is sent to the network equipment of the serving cell of terminal device, reference information includes the information with scheduled analog beam vector or the uplink reference signals of beamforming matrix precoding, the information of scheduled analog beam vector or beamforming matrix and interfered cell；The analog beam vector or beamforming matrix of optimization are received from the network equipment；And analog beam vector or beamforming matrix based on optimization, determine mixed-beam vector or beamforming matrix.Method at the network equipment includes: reception reference information；Based on reference information, the analog beam vector or beamforming matrix of optimization are determined；And the analog beam vector or beamforming matrix of optimization are sent to terminal device.It is achieved in the reduction of inter-cell interference and the improvement of whole network performance.
Description
Technical field
Embodiment of the disclosure is related to wireless communication field, more particularly relate to communication method, terminal device and
The network equipment.
Background technique
Currently, the use of unmanned vehicle (UAV) is more universal.It is expected that long term evolution (LTE) network support UAV.However,
User equipment (UE) meeting as UAV is introduced so that LTE network faces some new challenges.One of challenge is exactly stronger
Inter-cell interference.Since the high altitude environment where UAV UE will lead to apparent inter-cell interference, draw in current LTE network
Enter UAV UE, the performance for making LTE network is obviously degraded.Therefore, a kind of demand improved plan reduces this minizone
Interference, to ensure the performance of LTE network.
Summary of the invention
Generally, embodiment of the disclosure provide at terminal device and the network equipment implement for communication method,
Terminal device and the network equipment.
In one aspect of the present disclosure, a kind of method for communication implemented in terminal device is provided.This method packet
It includes: based on the measurement for being directed to downlink reference signal, determining the information in relation to interfered cell；Service to the terminal device
The network equipment of cell sends reference information, and the reference information includes: to utilize scheduled analog beam vector or beamforming matrix
And the uplink reference signals of precoding are carried out, the information in relation to the scheduled analog beam vector or beamforming matrix, with
And the information in relation to interfered cell；The analog beam vector or beamforming matrix of optimization are received from the network equipment, it is described
The analog beam vector or beamforming matrix of optimization are determined by the network equipment based on the reference information；And based on described
The analog beam vector or beamforming matrix of optimization determine mixed-beam vector or beamforming matrix to transmit for data.
In another aspect of the present disclosure, a kind of method for communication implemented in the network device is provided.This method can
To include: the reference information for receiving the terminal device in the serving cell from the network equipment, the reference information includes
The uplink reference signals of precoding are carried out using the scheduled analog beam vector or beamforming matrix, it is related scheduled
The information of analog beam vector or beamforming matrix, and the information in relation to interfered cell；Based on the reference information, optimization is determined
Analog beam vector or beamforming matrix；And the analog beam vector or beamforming matrix of the optimization are sent to the terminal
Equipment is transmitted in order to determining mixed-beam vector or beamforming matrix for data.
At the another aspect of the disclosure, a kind of terminal device is provided.The terminal device includes: processor；And with it is described
The memory of processor coupling, the memory, which has, is stored in instruction therein, and described instruction makes when being executed by processor
The electronic equipment executes movement, and the movement includes: to determine related interference based on the measurement for being directed to downlink reference signal
The information of cell；Reference information is sent to the network equipment of the serving cell of the terminal device, the reference information includes: benefit
The uplink reference signals of precoding are carried out with scheduled analog beam vector or beamforming matrix, the related scheduled mould
The information and the information in relation to interfered cell of quasi- beam vector or beamforming matrix；It receives and optimizes from the network equipment
Analog beam vector or beamforming matrix, the analog beam vector or beamforming matrix of the optimization are based on institute by the network equipment
It states reference information and determines；And analog beam vector or beamforming matrix based on the optimization, determine mixed-beam vector or
Beamforming matrix for data to transmit.
At the another aspect of the disclosure, a kind of network equipment is provided.The network equipment includes: processor；And with it is described
The memory of processor coupling, the memory, which has, is stored in instruction therein, and described instruction makes when being executed by processor
The electronic equipment executes movement, and the movement includes: the terminal device received in the serving cell from the network equipment
Reference information, the reference information carries out precoding including the use of the scheduled analog beam vector or beamforming matrix
Uplink reference signals, the information in relation to scheduled analog beam vector or beamforming matrix, and the letter in relation to interfered cell
Breath；Based on the reference information, the analog beam vector or beamforming matrix of optimization are determined；And by the analog beam of the optimization
Vector or beamforming matrix are sent to the terminal device in order to determine that mixed-beam vector or beamforming matrix are transmitted for data.
At the another aspect of the disclosure, a kind of computer readable storage medium is provided.The medium, which includes that machine is executable, to be referred to
Enable, the machine-executable instruction make when being executed by equipment the equipment execute it is above-mentioned terminal device implement for leading to
The method of letter.
At the another aspect of the disclosure, a kind of computer readable storage medium is provided.The medium, which includes that machine is executable, to be referred to
Enable, the machine-executable instruction make when being executed by equipment the equipment execute it is above-mentioned the network equipment implement for leading to
The method of letter.
According to the scheme of the embodiment of the present disclosure, can with low complex degree realize inter-cell interference reduction and entire LTE net
The improvement of network performance.
It should be appreciated that content described in Summary is not intended to limit the key or again of the embodiment of the present disclosure
Feature is wanted, it is also non-for limiting the scope of the present disclosure.The other feature of the disclosure will be easy to understand by description below.
Detailed description of the invention
It refers to the following detailed description in conjunction with the accompanying drawings, the above and other feature, advantage and aspect of each embodiment of the disclosure
It will be apparent.In the accompanying drawings, the same or similar appended drawing reference indicates the same or similar element, in which:
Fig. 1 shows the schematic diagram for the exemplary communication scene that the embodiment of the present disclosure can be implemented within；
Fig. 2 is the stream for the method for communication implemented at terminal device shown according to the embodiment of the present disclosure
Cheng Tu；
Fig. 3 is the specific reality of the mixing reception beamforming mechanism at the terminal device shown according to the embodiment of the present disclosure
Existing example；
Fig. 4 is the stream for the method for communication implemented at the network equipment shown according to the embodiment of the present disclosure
Cheng Tu；
Fig. 5 be at the network equipment shown according to the embodiment of the present disclosure for determine optimization analog beam vector or
The flow chart of the method for beamforming matrix；And
Fig. 6 shows the simplified block diagram for being suitable for realizing the electronic equipment of the embodiment of the present disclosure.
Specific embodiment
Embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although shown in the drawings of some of the disclosure
Embodiment, it should be understood that, the disclosure can be realized by various forms, and should not be construed as being limited to this
In the embodiment that illustrates, providing these embodiments on the contrary is in order to more thorough and be fully understood by the disclosure.It should be understood that
It is that being given for example only property of the accompanying drawings and embodiments effect of the disclosure is not intended to limit the protection scope of the disclosure.
Term " network equipment " as used herein refers to other realities in base station or communication network with specific function
Body or node." base station " can indicate node B (NodeB or NB), evolution node B (eNodeB or eNB), remote radio
Unit (RRU), radio-frequency maser (RH), remote radio heads (RRH), repeater or femto base station, femto base station etc.
Low power nodes etc..In the context of the disclosure, to discuss convenient purpose, term " network equipment " and " base station " can
To be used interchangeably, and mainly using eNB as the example of the network equipment.
Terminology used in this article " terminal device " is to refer to carry out channel radio between base station or each other
Any terminal device or user equipment (UE) of letter.Particularly, the terminal device of this paper, which can be, has guided stronger minizone
The terminal device of interference, such as the terminal device of high dry running, such as UAV.However, as an example, terminal device may include
Sensor, detector, mobile terminal (MT), subscriber stations (SS), portable subscriber platform (PSS), mobile station with communication function
(MS) or access terminal (AT) and vehicle-mounted above equipment etc..In the context of the disclosure, to discuss convenient mesh
, term " terminal device " and " user equipment " may be used interchangeably, and mainly using UAV as the example of terminal device.
Term " includes " as used herein and its deformation are that opening includes, i.e., " including but not limited to ".Term "based"
It is " being based at least partially on ".Term " one embodiment " expression " at least one embodiment "；Term " another embodiment " indicates
" at least one other embodiment ".The related definition of other terms provides in will be described below.
In order to reduce above-mentioned stronger inter-cell interference, it has been suggested that the full dimension in the side the network equipment (such as eNB) is more
Multi output (FD-MIMO) mechanism of input reduces inter-cell interference by launching beam forming mechanism in advance.It is this to be set in network
The FD-MIMO mechanism of standby side can concentrate transmission power and avoid the minizone for down-link data channel transmission in advance
Interference.However, it not can solve the inter-cell interference for downlink control channel transmission, because for the ease of user couple
The quick random access of network still uses non-beamformed transmission mechanism for downlink control channel transmission.
In this case, the reception beamforming mechanism in terminal equipment side is considered, to improve downlink control simultaneously
The performance of channel and data channel processed.In having studied in the related technology for the new radio (NR) of the 5th third-generation mobile communication (5G)
Receive beamforming mechanism.But the original purpose of these mechanism is all enhancing service link quality, and be not to eliminate or drop
Low inter-cell interference, thus it is not particularly suited for the LTE communication of the terminal device of such as UAV etc.In addition, these mechanism are excessively multiple
It is miscellaneous and the overspending time is needed to carry out reception beam designing.Also, these mechanism only may be adapted to 5G NR new interface and 5G
NR terminal device.
In consideration of it, one of the design of the embodiment of the present disclosure be that provide a kind of distinctive reception beamforming mechanism with
Inter-cell interference is eliminated or reduces to protect simultaneously to support the LTE communication of the terminal device of such as UAV etc of superperformance
Hold low time delay, low complex degree and low cost.This is described in detail with reference to the accompanying drawing.
Fig. 1 shows the schematic diagram for the exemplary communication scene 100 that the embodiment of the present disclosure can be implemented within.For convenience
It discusses, it hereafter may be using eNB as the network equipment or the example of base station, and using UAV as the example of terminal device.However it answers
Work as understanding, this is intended merely to facilitate the thought for illustrating the embodiment of the present disclosure, it is not intended to limit the application of the disclosure in any way
Scene and range.
As shown in Figure 1, serving cell of the terminal device 110 of such as UAV for instance in the network equipment 120 of such as eNB
It is interior.In downlink transmission, terminal device 110 by from other network equipments (for example, the network equipment of such as eNB
130) stronger interference, that is, inter-cell interference.One terminal device 110 and two 120 Hes of the network equipment are only shown in figure
130, it is understood that each serving cell may exist the terminal device of multiple such as UAV, and each terminal device can be with
In the presence of the inter-cell interference for coming from multiple network equipments (that is, multiple interfered cells).The application is to this and is not intended to be limited in any.
The embodiment of the present disclosure is intended to provide a kind of reception beamforming mechanism in 110 side of terminal device, to improve simultaneously
The performance of downlink control channel and both data channels in the LTE communication of the terminal device of such as UAV, to improve
The utilization rate of system resource.The present inventors have noted that can be used more by the way that more antennas is arranged at terminal device 110
Spatial degrees of freedom eliminate or reduce inter-cell interference.In this case, terminal device 110 just needs to have more days
Line end mouth.If antenna port increases, for the case where realizing digital beam for every resource block or every subcarrier, obtain
Taking the wave beam of every subcarrier will become more complicated.Terminal device 110 will be needed in short time interval specifically, increasing antenna port
Inside estimate higher-dimension channel matrix.In addition, it is complicated by the hardware cost and processing that increase terminal device 110 to increase antenna port
Degree, because each antenna port requires to control by individual radio frequency (RF) link.In consideration of it, the present inventor proposes,
Implement mixed-beam forming mechanism at the terminal device 110 of such as UAV, to improve system performance, while making antenna port number
Mesh remains unchanged, so that it is guaranteed that low time delay, low complex degree and low cost.
For this purpose, the embodiment of the present disclosure provides the method for communication for implementing at terminal device and the network equipment
With corresponding equipment.It is described in detail below with reference to Fig. 2 to Fig. 6.
Fig. 2 shows be used for the method 200 for communication of implementation at terminal device according to the embodiment of the present disclosure
Flow chart.This method 200 can for example be implemented at the terminal device (such as UAV) 110 of Fig. 1.For the convenience of description, hereafter will
Method 200 is described in conjunction with the environment of Fig. 1.It should be understood, however, that this method can be implemented at any terminal device, especially
It is at the terminal device of such as UAV.
As previously mentioned, in downlink transmission, terminal device 110 may be by small from one or more interference
The stronger interference in area's (such as network equipment 130).In accordance with an embodiment of the present disclosure, terminal device 110 can be collected related dry
The information of cell is disturbed, in order to the elimination or reduction of interference.In accordance with an embodiment of the present disclosure, as shown in Fig. 2, 210, terminal is set
Standby 110 can determine the information in relation to interfered cell based on the measurement for being directed to downlink reference signal.As known, terminal is set
Standby 110 can receive by the downlink reference signal of the network equipment transmission of each cell.In embodiment of the disclosure,
Downlink reference signal can be such as cell special reference (CRS), channel state information reference signals (CSI-RS)
Or other downlink reference signals.
In accordance with an embodiment of the present disclosure, terminal device 110 can be based on from serving cell (such as the network equipment of Fig. 1
120) believe with the corresponding reference of the downlink reference signal of at least one other cell (such as network equipment 130 of Fig. 1)
Number receive power (RSRP), to determine the information in relation to interfered cell.It in one embodiment, can be based on from serving cell
Downlink reference signal determine interfered cell compared between the downlink reference signal from other cells
Set, as the information in relation to interfered cell.For example, the information in relation to interfered cell can be indicated by gathering { n }, wherein gathering
{ n } can be determined by following formula (1):
{n,||RSPRn-RSRP1|≤κ} (1)
Wherein, n indicates the mark of interfered cell, RSPRnIndicate the downlink reference signal for being directed to interfered cell
RSRP, RSPR1Indicate that the RSRP of the downlink reference signal for serving cell, k indicate predetermined threshold.It will be appreciated that having
The determination for closing the information of interfered cell is not limited to mode listed above, but can be using the known in the art or following exploitation
Any desired manner implement.
Then, 220, terminal device 110 can send reference information to the network equipment 120 of serving cell where it.
Reference information carries out the uplink reference signals of precoding including the use of scheduled analog beam vector or beamforming matrix, has
Close the information of scheduled analog beam vector or beamforming matrix and the information in relation to interfered cell.
In accordance with an embodiment of the present disclosure, terminal device 110 can be based on the downlink measurement of serving cell, from predetermined codes
Scheduled analog beam vector or beamforming matrix are selected in this.The predetermined code book sets the network of terminal device and serving cell
It is all known for standby.For example, terminal device 110 can be based on the network equipment (such as the network of Fig. 1 for serving cell
Equipment 120) downlink measurement, from a predetermined code book select one make the maximized analog wave of service link quality
Beam vector or beamforming matrix, as scheduled analog beam vector or beamforming matrix.For example, scheduled analog beam vector or wave
Beam matrix can be indicated by W, can be determined by following formula (2):
Wherein KfIndicate the number of subcarrier, KcIndicate the code word C in predetermined code bookiNumber, H1,1(f) indicate that service is small
Channel matrix of the network equipment (index is 1) in area to terminal device (index is 1)；F indicates the index of subcarrier or resource block.
It will be appreciated that the selection of scheduled analog beam vector or beamforming matrix can pass through any of the known in the art or following exploitation
Suitable method is implemented, and is not limited in mode listed above.
In accordance with an embodiment of the present disclosure, selected scheduled analog beam vector or wave can be used in terminal device 110
Beam matrix W sends uplink reference signals.For example, utilizing selected scheduled analog beam vector or beamforming matrix W
Precoding processing is carried out to uplink reference signals and is sent.
In accordance with an embodiment of the present disclosure, also to the network equipment of serving cell, (such as the network of Fig. 1 is set terminal device 110
The standby information 120) sent in relation to scheduled analog beam vector or beamforming matrix and the related interference as above determined at 210
The information { i } of cell.In one embodiment, the information in relation to scheduled analog beam vector or beamforming matrix for example can wrap
Include the index of scheduled analog beam vector or beamforming matrix W in predetermined code book.Certainly, which also may include and make a reservation for
Analog beam vector or the related other contents of beamforming matrix, the application is to this and is not intended to be limited in any.
230, terminal device 110 can receive excellent from the network equipment (such as network equipment 120 of Fig. 1) of serving cell
The analog beam vector or beamforming matrix of change.The analog beam vector or beamforming matrix of optimization are based on by the network equipment
Determined by 220 reference informations sent.The determination of the analog beam vector or beamforming matrix of optimization considers inter-cell interference
Elimination or reduction and the improvement of service link quality.About this point, retouched in detail further in connection with Fig. 4 and Fig. 5
It states.
240, terminal device 110 can determine that mixed-beam is sweared based on the analog beam vector of optimization or beamforming matrix
Amount or beamforming matrix for data to transmit.In accordance with an embodiment of the present disclosure, terminal device 110 can be based on the analog wave of optimization
Beam vector or beamforming matrix, and combine linear pre-coding scheme, Lai Shengcheng mixed-beam vector or beamforming matrix.According to the disclosure
Embodiment, linear predictive coding scheme, which can be, divides equally estimation error (MMSE) criterion, Zero Forcing or this field based on minimum
The scheme of any other suitable criterion of the known or following exploitation.In accordance with an embodiment of the present disclosure, for every resource block or every son
Carrier wave generates mixed-beam vector or beamforming matrix.In one embodiment, for every resource block or the mixed recharge of every subcarrier
Beam vector or beamforming matrix can be indicated by W (f), be determined by following formula (3):
W (f)=W1(f)A (3)
Wherein f indicates the index of resource block or subcarrier, A indicate the optimization received 230 analog beam vector or
Beamforming matrix, W1(f) beam vector or beamforming matrix of the linear predictive coding for every resource block or subcarrier are indicated.
For example, it is assumed that each terminal device (such as terminal device 110 of Fig. 1) has N number of antenna port, each network is set
Standby (such as network equipment 120 and the network equipment 130 of Fig. 1) has M antenna port, then i-th of terminal device and j-th of net
Channel between network equipment can be expressed as the H with N × M dimensioni,j.In one embodiment, can based on MMSE criterion come
Design W1(f), as shown in following formula (4):
Wherein, f indicates the index of resource block or subcarrier, H1,1(f) indicate the network equipment of serving cell (index is 1)
To the channel matrix of terminal device (index is 1), K indicates the number of interfered cell, σ0 2Indicate the ambient noise at terminal device 1
Power, I representation dimension are the unit matrix of M；Representing matrix seeks pseudo-inverse operation.
In another embodiment, W can be designed based on Zero Forcing1(f), as shown in following formula (5):
Wherein, f indicates that the index of resource block or subcarrier, K indicate the number of interfered cell, and μ indicates desired data flow
Order, M is network equipment side antenna port number；Representing matrix seeks pseudo-inverse operation；H1,k(f) indicate interfered cell k to eventually
The channel matrix of end equipment 1；Gμ(f) be matrix G (f) submatrix, be made of the preceding μ row vector of G (f).
After mixed-beam vector or beamforming matrix has been determined, terminal device 110 can be used for data transmission.Example
Such as, the mixed-beam vector can be used or beamforming matrix carries out the reception or demodulation of down link signal.In order to make it easy to understand,
The specific example of beamforming mechanism is received according to the mixing of the embodiment of the present disclosure below with reference to Fig. 3 description.
Fig. 3 shows the specific implementation that the mixing at the terminal device according to the embodiment of the present disclosure receives beamforming mechanism
Example 300.The mechanism can for example be implemented at the terminal device 110 of Fig. 1.
As shown in figure 3, analog beam former 310, RF link 320 and number can be arranged at terminal device 110
Beam-shaper 330.In embodiment of the disclosure, analog beam former 310 can be implemented by phase-shift circuit, such as scheme
Shown in 3.In downlink transmission, via analog beam former 310 to the multiple downlink numbers received by antenna
Analog beam processing is carried out respectively according to stream, wherein can use analog beam vector or the beamforming matrix A of above-mentioned optimization to execute
The processing, to be reduced the corresponding data stream of dimension.Then via corresponding RF link 320, the data of dimension will be reduced
It is streamed to digital beam former 330, to carry out digital beam processing, to obtain the baseband output signal of more low dimensional.
It will be understood that in accordance with an embodiment of the present disclosure, the analog beam of the optimization of inter-cell interference is considered due to being utilized
Vector or beamforming matrix, thus inter-cell interference can be eliminated or reduce, so that it is guaranteed that system performance.Further, since being utilized
Mixed-beam forming mechanism, so that the antennal interface invariable number at terminal device, accordingly ensure that low time delay, low complex degree and low
Cost.
In addition, above-mentioned mixed-beam vector or beamforming matrix can also be used for the transmission of uplink signal.For example, can
To be used for transmission power concentration in the desired direction, it is possible thereby to reduce the terminal device transmitting for leaking into other cells
Power, to reduce uplink channel interference.Furthermore, above-mentioned mixed-beam forming mechanism can for inter-cell interference and
The neatly aerial array of using terminal equipment, without introducing additional Base-Band Processing complexity.
So far describe for realizing according to the embodiment of the present disclosure mixing receive beamforming mechanism, in terminal device
The method for communication that place implements.Ground is corresponded to the above method, the embodiment of the present disclosure also provides for realizing according to this public affairs
Open the mixed-beam forming mechanism of the terminal equipment side in such as UAV of embodiment, implement at the network equipment for leading to
The method of letter.Fig. 4 is shown according to the embodiment of the present disclosure for the method 400 for communication of implementation at the network equipment
Flow chart.For the convenience of description, describing method 400 below in conjunction with the environment of Fig. 1.However, this method 400 can be such as
Implement at the arbitrary network equipment of the network equipment 120 of Fig. 1.
As shown in figure 4, the network equipment 120 can receive the upper of the terminal device 110 in its serving cell 410
Downlink reference signal, the information in relation to scheduled analog beam vector or beamforming matrix and in relation to the information of interfered cell.Its
Middle uplink reference signals carry out precoding using scheduled analog beam vector or beamforming matrix.The step and front are tied
It is corresponding to close step described in the frame 220 of Fig. 2.About uplink reference signals, related scheduled analog beam vector or wave beam
The information of matrix and information in relation to interfered cell, may refer to the description of the frame 220 above in conjunction with Fig. 2, which is not described herein again.
420, the network equipment 120 can be based on uplink reference signals, related scheduled analog beam vector or wave
The information of beam matrix and information in relation to interfered cell determine the analog beam vector or beamforming matrix of optimization, as front is tied
Mentioned in the description for closing the frame 230 of Fig. 2.The analog beam vector or wave beam square of the optimization are illustrated below with reference to Fig. 5
The determination of battle array.
Fig. 5 be at the network equipment shown according to the embodiment of the present disclosure for determine optimization analog beam vector or
The flow chart of the method 500 of beamforming matrix.This method can be real at the arbitrary network equipment of the network equipment 120 of such as Fig. 1
It applies.
As shown in figure 5, the network equipment 120 can be based on uplink reference signals and in relation to the letter of interfered cell 510
Breath obtains the corresponding uplink measurement information for being directed to serving cell and interfered cell.In accordance with an embodiment of the present disclosure, network
Equipment 120 can be for the uplink reference signals measurement uplink letter of the terminal device 110 in its serving cell
Road, to obtain the uplink measurement information for serving cell.On the other hand, in accordance with an embodiment of the present disclosure, network is set
Standby 120 can be obtained from interfered cell (network equipment 130 of such as Fig. 1) for interference based on the information in relation to interfered cell
The uplink measurement information of cell.
In one embodiment, the network equipment 120 can be sent to interfered cell and be asked based on the information in relation to interfered cell
It asks.For example, the network equipment 120 can send the letter about target terminal equipment (such as terminal device 110) to the network equipment 130
Breath, to obtain the uplink channel measurement that the network equipment 130 is carried out for the uplink reference signals of terminal device 110
Information.
520, the network equipment 120 can based in relation to scheduled analog beam vector or beamforming matrix information and
510 uplink measurement informations obtained, determine the corresponding channel state information for being directed to serving cell and interfered cell
(CSI).In accordance with an embodiment of the present disclosure, the related scheduled analog beam vector or wave beam square fed back based on terminal device 110
The information of battle array, the network equipment 120 can determine scheduled analog beam vector or beamforming matrix itself, such as aforementioned W.
Also, it can be expressed as in the uplink measurement information that frame 510 obtainsThe network equipment 120 can restore service chaining as a result,
The entire CSI on road and interfering link, such as the estimated matrix of i-th of channel matrixIt can be obtained by uplink measurement
ChannelAnd the scheduled analog beam vector or beamforming matrix W of terminal device feedback indicate, can by following formula (6) come
It determines:
WhereinIt indicates to Matrix Calculating pseudo-inverse operation；The conjugate transposition operation of representing matrix.
530, the network equipment 120 can determine the analog beam vector or wave beam of the optimization based on the CSI restored
Matrix.In accordance with an embodiment of the present disclosure, the network equipment 120 can be based on the CSI information restored, the analog beam of design optimization
Vector or beamforming matrix, so that reducing or eliminating inter-cell interference and improving service link quality.In one embodiment, example
It, can be such as the analog beam vector or beamforming matrix A of following formula (7) design optimization if foundation maximization signals leakiness is than criterion:
Wherein, KiIndicate interfered cell number being reported by terminal device or being determined by the network equipment of serving cell, Kf
Indicate the number of subcarrier, H1,i(f) indicate that the channel matrix of terminal device and the 1st minizone, f indicate subcarrier or resource
The index of block, Q indicate that F norm is 1 vector or matrix, and rank of matrix is determined by the fluxion of transmission data.KfIndicate that son carries
The number of wave or resource block；KiThe number for indicating interfered cell, is determined, K by the network equipment of serving celli≤ N, wherein N is eventually
The number for the interfered cell that end equipment reports.
It will be appreciated that other criterion also can be used complete optimization analog beam vector or beamforming matrix A design,
The application imposes any restrictions not to this.
Fig. 4 is returned to, 430, the analog beam vector or beamforming matrix of optimization are sent to terminal device by the network equipment 120
110.As described in the frame 240 above in conjunction with Fig. 2, terminal device 110 can be by the analog beam vector or wave of the optimization received
Determination of the beam matrix for mixed-beam vector or beamforming matrix, for use in data transmission.In accordance with an embodiment of the present disclosure, net
Network equipment 120 can derive the analog beam vector of optimization or the quantised versions of beamforming matrix AAnd it willIt is sent to terminal
Equipment 110.Alternately, the network equipment 120 can also incite somebody to actionIndex be sent to terminal device 110.Certainly, the application is not
It is limited to these embodiments, but the analog beam vector or wave beam about optimization can be transmitted using any other suitable method
The information of matrix.
So far describe for realizing according to the embodiment of the present disclosure mixing receive beamforming mechanism, in the network equipment
The method for communication that place implements is used to communicate with what is describe above in conjunction with Fig. 2 to Fig. 3 what terminal equipment side was implemented
The processing of method is corresponding, and other processing details can refer to the description of Fig. 2 to Fig. 3 of front, and which is not described herein again.
In addition, the present inventor has carried out Performance Analysis to the mechanism, as illustrated in table I below.
Table I
From Table I as it can be seen that can effectively support LTE UAV terminal according to the mixed-beam forming mechanism of the embodiment of the present disclosure
Equipment and LTE non-UAV terminal device (land terminal equipment) coexist, and whole system performance is improved.
According to each example embodiment of the disclosure, may be implemented to shape in the mixed-beam of the terminal equipment side of such as UAV
Mechanism, wherein consider inter-cell interference reduce or eliminate and the improvement of whole system performance, while keeping low time delay, low multiple
Miscellaneous degree and low cost.Since in the mechanism, the design of analog beam vector or beamforming matrix is special based on the secondary statistics of channel
Property, therefore there is stronger robustness in UAV mobility and passback time delay.Furthermore, it is possible to according to measure and passback time delay come
The number of target jamming cell is dynamically changed, so as to be well adapted for actual scene.
Fig. 6 shows the simplified block diagram for being suitable for realizing the electronic equipment 600 of embodiment of the disclosure.Equipment 600 can be with
For realizing terminal device (such as terminal device 110 of Fig. 1) and/or for realizing the network equipment (such as the network equipment of Fig. 1
120)。
As shown, equipment 600 may include one or more processors 610, be coupled to one or more of processor 610
A memory 620 and the one or more transmitters and/or receiver (TX/RX) 640 for being coupled to processor 610.
Processor 610 can be any suitable type suitable for local technical environment, and may include but unlimited
In general purpose computer, special purpose computer, microcontroller, digital signal controller (DSP) and based on multi-core processor framework
One of processor is a variety of.Equipment 600 can have multiple processors, such as be driven in time same with primary processor
The dedicated IC chip of the clock of step.
Memory 620 can be any suitable type suitable for local technical environment, and any conjunction can be used
Suitable data storage technology realizes that, as non-restrictive example, such as non-transient computer-readable storage media is based on semiconductor
Memory device, magnetic memory device and system, light storage device and system, fixed memory and removable memory.
At least part of the storage program 630 of memory 620.TX/RX 640 is used for two-way communication.TX/RX 640 has
At least one antenna is to promote to communicate, but the equipment can have several antennas in practice.Communication interface can indicate and it
Any interface needed for the communication of its network element.
Program 630 may include program instruction, which makes equipment when being executed by associated processor 610
600 can be operated according to the embodiment of the present disclosure, referring to as described in Fig. 2 to Fig. 5.It is, the implementation of the disclosure
Example can be by can be realized by computer software that the processor 610 of equipment 600 executes, or pass through hardware realization, Huo Zhetong
Cross being implemented in combination with for software and hardware.
In general, the various example embodiments of the disclosure can hardware or special circuit, software, logic or its
What implement in combination.Some aspects can be implemented within hardware, and other aspects can by controller, microprocessor or
Other are calculated implements in the firmware or software that equipment executes.When the various aspects of embodiment of the disclosure are illustrated or described as frame
When figure, flow chart or other certain graphical representations of use, it will be understood that box described herein, device, system, techniques or methods can
Using as unrestricted example in hardware, software, firmware, special circuit or logic, common hardware or controller or other in terms of
It calculates and implements in equipment or its certain combination.The example that can be used to realize the hardware device of the embodiment of the present disclosure includes but is not limited to:
Field programmable gate array (FPGA), Application Specific Standard Product (ASSP), system on chip (SOC), is answered at specific integrated circuit (ASIC)
Miscellaneous programmable logic device (CPLD), etc..
As an example, embodiment of the disclosure can be described in the context of machine-executable instruction, machine can be held
Row instruction such as includes in the program module executed in the device on the true or virtual processor of target.In general,
Program module includes routine, program, library, object, class, component, data structure etc., executes specific task or realizes specific
Abstract data structure.In embodiments, the function of program module can merge between described program module or
Segmentation.Machine-executable instruction for program module can execute in local or distributed apparatus.In distributed apparatus
In, program module can be located locally in remote medium storage the two.
The computer program code of method used to implement the present disclosure can be write with one or more programming languages.These
Computer program code can be supplied to the processing of general purpose computer, special purpose computer or other programmable data processing units
Device so that program code when being executed by computer or other programmable data processing units, cause flow chart and/
Or function/operation specified in block diagram is carried out.Program code can completely on computers, part on computers, conduct
Independent software package, part are on computers and part is held on a remote computer or server on the remote computer or completely
Row.
In the context of the disclosure, machine readable media can be include or storage be used for or about instruction execution system
Any tangible medium of the program of system, device or equipment.Machine readable media can be machine-readable signal medium or machine can
Read storage medium.Machine readable media can include but is not limited to electronics, magnetic, it is optical, electromagnetism, infrared or partly lead
Body system, device or equipment equipment or its any appropriate combination.The more detailed example of machine readable storage medium includes having one
Or the electrical connection of multiple conducting wires, portable computer diskette, hard disk, random access memories (RAM), read-only memory
(ROM), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory), light storage device, magnetic storage apparatus or its is any appropriate
Combination.
In addition, although operation is depicted with particular order, this simultaneously should not be construed and require this generic operation to show
Particular order is completed with sequential order, or executes the operation of all diagrams to obtain expected result.In some cases, more
Task or parallel processing can be beneficial.Similarly, although discussed above contain certain specific implementation details, this is not
It should be interpreted that any invention of limitation or the scope of the claims, and should be interpreted that the specific embodiment that can be directed to specific invention
Description.Certain features described in the context of separated embodiment can also be with combined implementation single real in this specification
It applies in example.Conversely, the various features described in the context of single embodiment can also discretely multiple embodiments or
Implement in any appropriate sub-portfolio.
Although with specific to the language description of structural features and or methods of action theme, but it is to be understood that institute
The theme limited in attached claim is not limited to above-described special characteristic or movement.On the contrary, above-described specific spy
Movement of seeking peace is disclosed as the exemplary forms for realizing claim.
Claims (20)
1. a kind of method for communication implemented at terminal device, comprising:
Based on the measurement for being directed to downlink reference signal, the information in relation to interfered cell is determined；
Reference information is sent to the network equipment of the serving cell of the terminal device, the reference information includes: using predetermined
Analog beam vector or beamforming matrix and carry out the uplink reference signals of precoding, the related scheduled analog beam
The information and the information in relation to interfered cell of vector or beamforming matrix；
The analog beam vector or beamforming matrix of optimization, the analog beam vector or wave of the optimization are received from the network equipment
Beam matrix is determined by the network equipment based on the reference information；And
Analog beam vector or beamforming matrix based on the optimization determine mixed-beam vector or beamforming matrix for data
Transmission.
2. according to the method described in claim 1, wherein determining that the information in relation to interfered cell includes:
Determine the corresponding reference of the downlink reference signal from the serving cell and at least one other cell
Signal reception power (RSRP)；And
The set of interfered cell is determined based on the RSRP of the downlink reference signal.
3. according to the method described in claim 1, further include:
Based on the measurement of the downlink reference signal for the serving cell, selected from predetermined code book described predetermined
Analog beam vector or beamforming matrix.
4. according to the method described in claim 1, wherein generating the mixed-beam vector or beamforming matrix includes:
Analog beam vector or beamforming matrix based on the optimization, and linear pre-coding scheme is combined, to generate the mixing
Beam vector or beamforming matrix.
5. according to the method described in claim 1, wherein the terminal device is unmanned vehicle (UAV).
6. a kind of method for communication implemented at the network equipment, comprising:
Receive the serving cell from the network equipment in terminal device reference information, the reference information including the use of
The scheduled analog beam vector or beamforming matrix and the uplink reference signals for carrying out precoding, related scheduled simulation
The information of beam vector or beamforming matrix, and the information in relation to interfered cell；
Based on the reference information, the analog beam vector or beamforming matrix of optimization are determined；And
The analog beam vector or beamforming matrix of the optimization are sent to the terminal device in order to determine mixed-beam arrow
Amount or beamforming matrix are transmitted for data.
7. according to the method described in claim 6, wherein determining the analog beam vector of the optimization or beamforming matrix includes:
Based on the uplink reference signals and the information in relation to interfered cell, obtains for serving cell and interfere small
The corresponding uplink measurement information in area；
Based on the information and the uplink measurement information in relation to scheduled analog beam vector or beamforming matrix, determine
For the corresponding channel state information (CSI) of the serving cell and the interfered cell；And
Based on the CSI, the analog beam vector or beamforming matrix of the optimization are determined.
8. according to the method described in claim 7, wherein obtaining the uplink measurement information and including:
For the uplink reference signals, measurement is directed to the uplink channel of the serving cell；And
Based on the information in relation to interfered cell, the uplink drive test for being directed to the interfered cell is obtained from the interfered cell
Measure information.
9. according to the method described in claim 6, wherein the terminal device is unmanned vehicle (UAV).
10. a kind of terminal device, comprising:
Processor；And
The memory coupled with the processor, the memory, which has, is stored in instruction therein, and described instruction is processed
Device makes the equipment execute movement when executing, and the movement includes:
Based on the measurement for being directed to downlink reference signal, the information in relation to interfered cell is determined；
Reference information is sent to the network equipment of the serving cell of the terminal device, the reference information includes: using predetermined
Analog beam vector or beamforming matrix and carry out the uplink reference signals of precoding, the related scheduled analog beam
The information and the information in relation to interfered cell of vector or beamforming matrix；
The analog beam vector or beamforming matrix of optimization, the analog beam vector or wave of the optimization are received from the network equipment
Beam matrix is determined by the network equipment based on the reference information；And
Analog beam vector or beamforming matrix based on the optimization determine mixed-beam vector or beamforming matrix for data
Transmission.
11. equipment according to claim 10, wherein determining that the information in relation to interfered cell includes:
Determine the corresponding reference of the downlink reference signal from the serving cell and at least one other cell
Signal reception power (RSRP)；And
The set of interfered cell is determined based on the RSRP of the downlink reference signal.
12. equipment according to claim 10, wherein the movement further include:
Based on the measurement of the downlink reference signal for the serving cell, selected from predetermined code book described predetermined
Analog beam vector or beamforming matrix.
13. equipment according to claim 10, wherein generating the mixed-beam vector or beamforming matrix includes:
Analog beam vector or beamforming matrix based on the optimization, and linear pre-coding scheme is combined, to generate the mixing
Beam vector or beamforming matrix.
14. equipment according to claim 10, wherein the terminal device is unmanned vehicle (UAV).
15. a kind of network equipment, comprising:
Processor；And
The memory coupled with the processor, the memory, which has, is stored in instruction therein, and described instruction is processed
Device makes the equipment execute movement when executing, and the movement includes:
Receive the serving cell from the network equipment in terminal device reference information, the reference information including the use of
The scheduled analog beam vector or beamforming matrix and the uplink reference signals for carrying out precoding, related scheduled simulation
The information of beam vector or beamforming matrix, and the information in relation to interfered cell；
Based on the reference information, the analog beam vector or beamforming matrix of optimization are determined；And
The analog beam vector or beamforming matrix of the optimization are sent to the terminal device in order to determine mixed-beam arrow
Amount or beamforming matrix are transmitted for data.
16. equipment according to claim 15, wherein determining the analog beam vector of the optimization or beamforming matrix includes:
Based on the uplink reference signals and the information in relation to interfered cell, obtains for serving cell and interfere small
The corresponding uplink measurement information in area；
Based on the information and the uplink measurement information in relation to scheduled analog beam vector or beamforming matrix, determine
For the corresponding channel state information (CSI) of the serving cell and the interfered cell；And
Based on the CSI, the analog beam vector or beamforming matrix of the optimization are determined.
17. equipment according to claim 16, wherein obtaining the uplink measurement information and including:
For the uplink reference signals, measurement is directed to the uplink channel of the serving cell；And
Based on the information in relation to interfered cell, the uplink drive test for being directed to the interfered cell is obtained from the interfered cell
Measure information.
18. equipment according to claim 15, wherein the terminal device is unmanned vehicle (UAV).
19. a kind of computer readable storage medium, including machine-executable instruction, the machine-executable instruction is held by equipment
The equipment is set to execute method described in any one of -5 according to claim 1 when row.
20. a kind of computer readable storage medium, including machine-executable instruction, the machine-executable instruction is held by equipment
The equipment is set to execute the method according to any one of claim 6-9 when row.
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| CN201711182970.8A CN109831823B (en) | 2017-11-23 | 2017-11-23 | Method for communication, terminal equipment and network equipment |
| PCT/CN2018/117263 WO2019101173A1 (en) | 2017-11-23 | 2018-11-23 | Method for communication, terminal device and network device |
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| CN201711182970.8A CN109831823B (en) | 2017-11-23 | 2017-11-23 | Method for communication, terminal equipment and network equipment |
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| WO (1) | WO2019101173A1 (en) |
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| CN112533291A (en) * | 2019-09-18 | 2021-03-19 | 华为技术有限公司 | Resource scheduling method and related equipment |
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| CN112994766B (en) * | 2019-12-16 | 2022-12-27 | 华为技术有限公司 | Beam transmission method and related equipment |
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| CN102291726A (en) * | 2010-06-17 | 2011-12-21 | 重庆无线绿洲通信技术有限公司 | Wireless network interference elimination method |
| CN102356561A (en) * | 2009-02-02 | 2012-02-15 | 高通股份有限公司 | Scheduling algorithms for cooperative beamforming |
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| CN107257929A (en) * | 2015-02-02 | 2017-10-17 | 瑞典爱立信有限公司 | Determine radiation beam pattern |
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| CN100423602C (en) * | 2005-05-17 | 2008-10-01 | 上海原动力通信科技有限公司 | Beam form-endowing and realizing method for co-frequency network |
| JP5231645B2 (en) * | 2008-08-14 | 2013-07-10 | エレクトロニクス アンド テレコミュニケーションズ リサーチ インスチチュート | Beam forming vector generation method and beam forming vector generation information provision method |
| CN103476125B (en) * | 2013-09-03 | 2016-07-13 | 郑州大学 | A kind of chance disturbs optimization method and the system of user scheduling in alignment |
| CN104868947A (en) * | 2014-02-20 | 2015-08-26 | 中兴通讯股份有限公司 | Method of realizing beam forming and base station |
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| CN102356561A (en) * | 2009-02-02 | 2012-02-15 | 高通股份有限公司 | Scheduling algorithms for cooperative beamforming |
| CN102291726A (en) * | 2010-06-17 | 2011-12-21 | 重庆无线绿洲通信技术有限公司 | Wireless network interference elimination method |
| US20170141832A1 (en) * | 2014-06-03 | 2017-05-18 | Samsung Electronics Co., Ltd. | Feedback transmitting and receiving method and device in mobile communication system |
| CN107257929A (en) * | 2015-02-02 | 2017-10-17 | 瑞典爱立信有限公司 | Determine radiation beam pattern |
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